CN110820810B - Thermoplastic polyolefin pre-laid waterproof coiled material and preparation method thereof - Google Patents
Thermoplastic polyolefin pre-laid waterproof coiled material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a thermoplastic polyolefin pre-laid waterproof coiled material and a preparation method thereof. The technical proposal is as follows: the upper part of the thermoplastic polyolefin waterproof main body layer forms a butyl modified SIS hot-melt pressure-sensitive self-adhesive layer, a construction welding lap joint area is reserved at one side edge part of the thermoplastic polyolefin waterproof main body layer, the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer is covered with a weather-proof mineral particle functional layer with cement reaction activity, an anti-sticking isolation edge film is arranged at one side edge part of the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer, and a construction self-adhesive lap joint area is arranged below the anti-sticking isolation edge film. The beneficial effects are as follows: the internal stress of the thermoplastic polyolefin waterproof sheet is obviously reduced, and the dimensional stability is greatly improved; the high-temperature cohesive force of the pressure-sensitive adhesive is improved through the optimized design of the butyl modified SIS hot melt pressure-sensitive self-adhesive formula; and ingenious composite overlap edge structural design, and the effective combination of the three ensures that the product has excellent edge-warping prevention performance.
Description
Technical Field
The invention relates to a non-asphalt-based pre-laid building waterproof coiled material, in particular to a thermoplastic polyolefin pre-laid waterproof coiled material and a preparation method thereof.
Background
One of the decades of difficulties in underground waterproofing works plagued the industry is the problem of the waterproofing quality of the base plate and the side walls of the construction space. The main cause is water channeling leakage. The traditional waterproof material adopts the external waterproof and internal waterproof materials, and the waterproof coiled material is only adhered to the base layer, but not adhered to the structural concrete. Once the coiled material is broken, groundwater flows between the waterproof layer and the structural concrete, and enters the interior of the building from concrete cracks. Another reason is sedimentation effects. When traditional waterproof material bonds with the basic unit, once the foundation subsides, the basic unit warp subsides very easily, and the waterproof layer warp the deformation thereupon, easily with bonding basic unit release, the waterproof layer can not complete seal, makes the bottom plate expose in groundwater. Therefore, how to provide direct full-adhesion waterproof protection for structural concrete at the side wall parts without construction space of the bottom plate and the side wall becomes a challenge.
The United states Graves company invents a pre-paving waterproof coiled material system and a construction technology in 1992, and adopts a high polymer self-adhesive film waterproof coiled material worldwide for the first time to form full adhesion between the side wall parts of the construction space-free space of the bottom plate and the side wall and structural concrete, so that the best waterproof effect is achieved. The waterproof coiled material is a novel waterproof coiled material developed after the 90 th century in China, has the advantages of good low-temperature and waterproof performance, high tensile force and elongation, self-adhesion and the like, is deeply favored by the waterproof industry of buildings, particularly construction units, and is rapidly developed in China in recent years. However, the self-adhesive adopted by the waterproof coiled materials in China still takes modified asphalt as the main material, so that the technical defects of poor ageing resistance, cement mortar protection layer setting in the pre-paving construction process and the like still exist, and the construction efficiency is low and the engineering risk is potential. The core of the solution problem is to increase the research of the production and application of the polymer self-adhesive, which is used for replacing the domestic current modified asphalt self-adhesive. Some published literature in recent years reports some solutions, such as:
the invention discloses a self-adhesive waterproof roll with a high polymer and a preparation method thereof, which are disclosed in document 1, chinese patent application number is 201310297231.9, and the patent name is a self-adhesive waterproof roll free of uncovering. Wherein the self-adhesive layer in the structure of the uncovering-free high polymer self-adhesive waterproof coiled material consists of SBS resin, SIS resin, plasticizer, tackifier, light absorber and filler; the self-adhesive layer is provided with an isolating layer which is composed of active inorganic particles and can generate hydration reaction with fresh cement-based materials. When the self-adhesive waterproof coiled material with the structure is used, the isolation layer material on the surface of the self-adhesive waterproof coiled material is not required to be removed, so that concrete is directly poured, and a firm connecting interface is formed. Therefore, the method has the advantages of simpler construction, reduced resource waste, more stable and reliable bonding performance with concrete and the like.
Document 2, chinese patent application No. 201420307428.6, patent name "a macromolecule pre-laid waterproof coiled material", the technical scheme of the patent is: the upper surface of the modified polyethylene plastic waterproof main body layer is an SIS hot-melt pressure-sensitive self-adhesive layer, and the upper surface of the SIS hot-melt pressure-sensitive self-adhesive layer is covered with a weather-resistant mineral particle functional layer with cement reaction activity and a heat reflection type anti-sticking isolation edge film positioned at one side edge part of the coiled material; the beneficial effects are that: the heat reflection type anti-sticking isolation edge film can obviously reduce the surface temperature of the SIS hot melt pressure sensitive self-adhesive layer at the lapping edge part of the macromolecule pre-paved waterproof coiled material under outdoor sun exposure, so as to reduce the thermal creep property of the SIS hot melt pressure sensitive self-adhesive, and be beneficial to removing the anti-sticking isolation edge film in the construction process; the setting of the weather-proof mineral particle functional layer enables coiled materials to have the bonding construction characteristic of concrete mortar, effectively eliminates the problem of ultraviolet aging caused by long-term exposure of self-adhesive to air, and provides a non-adhesive pedestrian surface for construction operation, thereby avoiding the setting of a cement mortar protective layer and reducing construction cost.
The technical proposal reported in the above publication is to replace modified asphalt self-adhesive with polymer self-adhesive, which basically solves the technical defects of poor ageing resistance and the need of setting a cement mortar protective layer in the pre-paving construction process of the existing domestic products. However, document 1 has technical defects of poor water resistance and ultraviolet aging performance of the cement-based particle isolation layer, and potential engineering hidden trouble. Although the technical defects are solved by arranging the weather-proof mineral particle functional layer in the document 2, the technical defects still exist, namely, after the construction is finished, the polyethylene plastic waterproof main body layer is exposed to the sun, and under the dual actions of the swelling of the SIS hot melt pressure sensitive self-adhesive and the internal stress of the polyethylene plastic waterproof main body layer, the lap joint part of the coiled material is easy to deform, warp and even separate, and the engineering quality is seriously influenced.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art, and provides a thermoplastic polyolefin pre-laid waterproof coiled material and a preparation method thereof, which have excellent edge-warping prevention performance and effectively solve the technical defects that the joint edge is easy to warp and separate in the prior art.
The invention relates to a thermoplastic polyolefin pre-laid waterproof coiled material, which has the technical scheme that: the waterproof adhesive comprises a thermoplastic polyolefin waterproof main body layer (1), a butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2), a weather-resistant mineral particle functional layer (3), an anti-sticking isolation edge film (4), a construction welding lap joint area (5) and a construction self-adhesive lap joint area (6), wherein the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2) is formed on the upper portion of the thermoplastic polyolefin waterproof main body layer (1), the construction welding lap joint area (5) is reserved at one side portion of the thermoplastic polyolefin waterproof main body layer (1), the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2) is covered with the weather-resistant mineral particle functional layer (3) with cement reactivity, the anti-sticking isolation edge film (4) is arranged at one side portion of the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2), the construction self-adhesive lap joint area (6) is arranged below the anti-sticking isolation edge film (4), and a composite lap joint edge structure is formed by the construction self-adhesive lap joint area (6) and the construction welding lap joint area (5).
Preferably, the weather-resistant mineral particle functional layer (3) is composed of synthetic sand.
Preferably, the construction welding lap joint area (5) and the construction self-adhesion lap joint area (6) are adjacently arranged on the same side of the coiled material to form a composite lap joint edge structure.
Preferably, the width of the construction welding lap joint area (5) is 5-6 cm, and the width of the construction self-adhesion lap joint area (6) is 3-4 cm.
Preferably, the method for manufacturing the thermoplastic polyolefin waterproof main body layer (1) comprises the following steps:
firstly, adding a reinforcing material, an antioxidant, titanium pigment and thermoplastic polyolefin elastomer resin into a mixer, mixing and stirring for 5-20 minutes, and then preparing a reinforcing master batch by adopting a double-screw granulator; then respectively adding the thermoplastic polyolefin resin, the reinforcing master batch and the filling material into a double-screw molding extruder with the length-diameter ratio of more than 30 through weightlessness metering equipment, and extruding and molding a thermoplastic polyolefin waterproof main body layer (1) with the thickness of 0.5-1.5 mm;
wherein, according to weight portion, thermoplastic polyolefin resin 40-75 portions; 25-60 parts of thermoplastic polyolefin elastomer resin; 0.5-10 parts of reinforcing material; 10-50 parts of filling material; 0-2 parts of antioxidant; 1-3 parts of titanium dioxide.
Preferably, the preparation method of the butyl modified SIS hot melt pressure sensitive self-adhesive layer (2) comprises the following steps:
firstly, polyisobutylene and brominated butyl rubber are sequentially added into an internal mixer, back-mixed for 7-8 minutes at 130-140 ℃ and then discharged and filtered, and then the mixed master batch is packed and thinned through for 2-3 times by an open mill, and is cut into blocky mixed master batch for standby; adding naphthenic white oil, petroleum resin and an antioxidant into a reaction kettle with a stirring device, stirring and heating to 120-130 ℃, adding SIS thermoplastic rubber after materials are sufficiently melted, stirring and heating to 180-190 ℃ under the protection of nitrogen, adding a formula amount of prefabricated mixed master batch, stirring for more than 30 minutes under heat preservation until no macroscopic particles exist, adding a coupling agent, cooling and stirring to 145-155 ℃, and coating a hot-melt pressure-sensitive self-adhesive with the thickness of 0.3-0.5 mm on a thermoplastic polyolefin waterproof main body layer by adopting a hot-melt pressure-sensitive adhesive coating machine to form a pressure-sensitive self-adhesive layer;
wherein, according to the weight portions, 25 to 40 portions of SIS thermoplastic rubber, 2 to 10 portions of modifier, 20 to 35 portions of naphthenic oil, 35 to 60 portions of petroleum resin, 5 to 10 portions of polyisobutene, 0.5 to 2 portions of antioxidant and 0 to 2 portions of coupling agent.
Preferably, the reinforcing material is superfine reinforced inorganic fiber with surface treated with coupling agent, the average fiber diameter is 10-13-um, and the average fiber length is 70-150-um.
Preferably, the filling material adopts calcium carbonate, and the titanium dioxide adopts high weather-proof rutile type titanium dioxide.
Preferably, the SIS thermoplastic rubber is a styrene-isoprene-styrene block copolymer, and the technical parameters are as follows in parts by weight: the mass flow rate of the melt is 4-10 g/10min at 200 ℃/5kg in combination with 15 parts of styrene and 5-65 parts of diblock SI.
Preferably, the modifier is brominated butyl rubber, the antioxidant is a composite antioxidant compounded by antioxidant 1010 and antioxidant 168 according to any ratio, and the coupling agent is a silane coupling agent.
The preparation method of the thermoplastic polyolefin pre-laid waterproof coiled material provided by the invention comprises the following steps:
adding the prepared butyl modified SIS hot-melt pressure-sensitive self-adhesive into a hot-melt pressure-sensitive adhesive coating machine, coating the butyl modified hot-melt pressure-sensitive self-adhesive with the thickness of 0.3-0.5 mm on a thermoplastic polyolefin waterproof main body layer with the thickness of 0.5-1.5 mm by the hot-melt pressure-sensitive adhesive coating machine, and coating no adhesive in an area 5-6 cm inwards from one side edge of the thermoplastic polyolefin waterproof main body layer as a reserved construction welding lap joint area during coating; then covering an anti-sticking isolation edge film on a region 3-4 cm inward of a construction welding overlap region to serve as a construction self-sticking overlap region, and then covering the rest pressure-sensitive self-sticking layers with weather-resistant mineral particle functional layers with cement reactivity by adopting a sand spreader synchronously; then the thermoplastic polyolefin pre-laid waterproof coiled material product with the thickness of 1.2-1.8 mm is manufactured through traction compaction, cooling shaping, coiling, metering and cutting.
The invention is realized by adopting a one-step method, so that the production efficiency and the quality stability of the product are greatly improved, and the product has obvious cost advantage.
Compared with the prior art, the invention has the following beneficial effects:
the internal stress of the thermoplastic polyolefin waterproof sheet is obviously reduced, and the dimensional stability is greatly improved; through the optimized design of the butyl modified SIS hot melt pressure-sensitive self-adhesive formula, the high-temperature (generally 40-50 ℃) cohesive force of the pressure-sensitive adhesive is obviously improved under the condition that the adhesive property of the SIS hot melt pressure-sensitive self-adhesive is not affected; and ingenious composite overlap edge structural design, the effective combination of the three makes the product have excellent 'edge-warping prevention' performance, thus effectively solving the technical defect that the overlap edge is easy to warp and separate in the prior art;
1. the technical defect that the joint edge is easy to warp and separate in the prior art is effectively overcome by the combined scheme of the Thermoplastic Polyolefin (TPO) waterproof sheet designed based on the edge-warping prevention and the butyl modified SIS hot melt pressure-sensitive self-adhesive and the composite joint edge structural design;
2. the novel wet bonding technology has the advantages that the coiled material and the structural layer concrete form permanent organic combination, and the hidden danger of water channeling is avoided in the middle; even if the coiled material is damaged locally, water is limited in a small range, so that the reliability of the waterproof layer is completely improved;
3. the anti-impact and penetration-resistant performances are excellent, the construction load directly acted on the anti-impact and penetration-resistant reinforced concrete framework can bear the impact of the reinforced concrete framework, and the reinforced concrete casting can be directly implemented;
4. the construction is convenient, a leveling layer is not needed, the requirement on a base layer is low, the construction is not influenced by weather and humidity of the base layer, the construction in rainy seasons and the construction at the construction period are provided with unique obvious advantages, and a cement mortar protection layer which is time-consuming and financial-consuming is not needed;
5. the SIS hot melt pressure sensitive self-adhesive has strong self-healing property and unique self-healing capability for slight construction damage;
6. the waterproof coiled material is laid in the air on the base layer, is convenient and quick, and is not influenced by sedimentation deformation of the base layer.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic illustration of web lap joint prior to construction;
FIG. 3 is a schematic illustration of a coil after construction after hot melt roll pressing;
in the upper graph: the waterproof thermoplastic polyolefin body layer 1, the butyl modified SIS hot melt pressure sensitive self-adhesive layer 2, the weather-proof mineral particle functional layer 3, the anti-sticking isolation edge film 4, the construction welding lap zone 5 and the construction self-adhesive lap zone 6.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
The invention relates to a thermoplastic polyolefin pre-laid waterproof coiled material, which has the technical scheme that: the waterproof adhesive comprises a thermoplastic polyolefin waterproof main body layer (1), a butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2), a weather-resistant mineral particle functional layer (3), an anti-sticking isolation edge film (4), a construction welding lap joint area (5) and a construction self-adhesive lap joint area (6), wherein the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2) is formed on the upper portion of the thermoplastic polyolefin waterproof main body layer (1), the construction welding lap joint area (5) is reserved at one side portion of the thermoplastic polyolefin waterproof main body layer (1), the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2) is covered with the weather-resistant mineral particle functional layer (3) with cement reactivity, the anti-sticking isolation edge film (4) is arranged at one side portion of the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2), the construction self-adhesive lap joint area (6) is arranged below the anti-sticking isolation edge film (4), and a composite lap joint edge structure is formed by the construction self-adhesive lap joint area (6) and the construction welding lap joint area (5).
The construction welding lap joint area (5) and the construction self-adhesion lap joint area (6) are adjacently arranged on the same side of the coiled material to form a composite lap joint edge structure, the width of the construction welding lap joint area (5) is 5-6 cm, and the width of the construction self-adhesion lap joint area (6) is 3-4 cm.
The weather-proof mineral particle functional layer (3) is composed of synthetic sand, preferably synthetic sand made of white cement, high-activity superfine slag micropowder, natural mineral particles and the like, and the size range of the synthetic sand is 30-70 meshes of continuous grading.
The weather-resistant mineral particle functional layer has the following technical characteristics: the thermoplastic polyolefin waterproof main body layer is in an irregular flat polygonal shape and has proper continuous grading, so that the contact surface with the hot melt pressure-sensitive self-adhesive can be effectively improved, the adhesion firmness is improved, and meanwhile, the puncture damage of sharp particles to the thermoplastic polyolefin waterproof main body layer is avoided; secondly, the adhesive has excellent weather resistance and water resistance, and can effectively prevent ultraviolet aging problem and the like formed by long-term exposure of the self-adhesive to air under the protection of the adhesive; thirdly, the cement has cement reactivity, and plays a role in reaction and combination in the solidification process of concrete; fourthly, the anti-sticking function is achieved in production and transportation, and personnel are prevented from trampling in the construction process.
In addition, the manufacturing method of the thermoplastic polyolefin waterproof main body layer (1) provided by the invention comprises the following steps:
firstly, adding a reinforcing material, an antioxidant, titanium pigment and thermoplastic polyolefin elastomer resin into a mixer, mixing and stirring for 5-20 minutes, and then preparing a reinforcing master batch by adopting a double-screw granulator; then respectively adding the thermoplastic polyolefin resin, the reinforcing master batch and the filling material into a double-screw molding extruder with the length-diameter ratio of more than 30 through weightlessness metering equipment, and extruding and molding a thermoplastic polyolefin waterproof main body layer (1) with the thickness of 0.5-1.5 mm;
wherein, according to weight portion, thermoplastic polyolefin resin 40-75 portions; 25-60 parts of thermoplastic polyolefin elastomer resin; 0.5-10 parts of reinforcing material; 10-50 parts of filling material; 0-2 parts of antioxidant; 1-3 parts of titanium dioxide.
The melt mass flow rate of the thermoplastic polyolefin resin is 0.5-0.8 g/10min (230 ℃/2.16 kg), and the ethylene content (mass fraction) is 45-50%.
The thermoplastic polyolefin elastomer resin has a melt mass flow rate of 1.0 to 1.5g/10min (190 ℃/2.16 kg).
The reinforcing material is superfine reinforced inorganic fiber with surface treated with coupling agent, the average fiber diameter is 10-13-um, and the average fiber length is 70-150-um. Preferably the aspect ratio is greater than 7.
The filling material is 425-mesh active light calcium carbonate.
The antioxidant is a compound antioxidant compounded by antioxidant 1010 and antioxidant 168 according to any ratio.
The titanium dioxide adopts high weather-proof rutile type titanium dioxide.
In addition, the preparation method of the butyl modified SIS hot melt pressure sensitive self-adhesive layer (2) is as follows:
firstly, polyisobutylene and brominated butyl rubber are sequentially added into an internal mixer, back-mixed for 7-8 minutes at 130-140 ℃ and then discharged and filtered, and then the mixed master batch is packed and thinned through for 2-3 times by an open mill, and is cut into blocky mixed master batch for standby; adding naphthenic white oil, petroleum resin and an antioxidant into a reaction kettle with a stirring device, stirring and heating to 120-130 ℃, adding SIS thermoplastic rubber after materials are sufficiently melted, stirring and heating to 180-190 ℃ under the protection of nitrogen, adding a formula amount of prefabricated mixed master batch, stirring for more than 30 minutes under heat preservation until no macroscopic particles exist, adding a coupling agent, cooling and stirring to 145-155 ℃, and coating a hot-melt pressure-sensitive self-adhesive with the thickness of 0.3-0.5 mm on a thermoplastic polyolefin waterproof main body layer by adopting a hot-melt pressure-sensitive adhesive coating machine to form a pressure-sensitive self-adhesive layer;
wherein, according to the weight portions, 25 to 40 portions of SIS thermoplastic rubber, 2 to 10 portions of modifier, 20 to 35 portions of naphthenic oil, 35 to 60 portions of petroleum resin, 5 to 10 portions of polyisobutene, 0.5 to 2 portions of antioxidant and 0 to 2 portions of coupling agent.
The SIS thermoplastic rubber is a styrene-isoprene-styrene block copolymer, and the preferable technical parameters are as follows: the combined styrene content (mass fraction) is 15%, the diblock (SI) content (mass fraction) is 5-65%, and the melt mass flow rate is 4-10 g/10min (200 ℃/5 kg).
The modifier is brominated butyl rubber, and the preferable technical parameters are as follows: the Mooney viscosity is 28-36 ML (1+8) 125 ℃, and the bromine content (mass fraction) is 1.6-2.2%.
The naphthenic oil is naphthenic white oil, and the preferable technical indexes are as follows: the open flash point is more than or equal to 210 ℃, the pour point is less than or equal to-15 ℃, the saturated hydrocarbon content (mass fraction) is more than or equal to 93%, the aniline point is more than or equal to 105 ℃, and the carbon structure is Ca is less than or equal to 1%, cn is more than or equal to 47% and Cp is more than or equal to 50%.
The petroleum resin is hydrogenated petroleum resin, and the preferable technical parameters are as follows: the softening point is more than or equal to 105 ℃, the melt rotational viscosity (190 ℃) is more than or equal to 130mPa.s, and the Yellow Index (YI) is less than or equal to 3.
The technical parameters of the polyisobutene are that the open flash point is more than or equal to 220 ℃, the pour point is less than or equal to 15 ℃, the average molecular weight (Mn) is 1500-2500, and the kinematic viscosity (100 ℃) is 700-4000 mm 2 /s。
The antioxidant is a compound antioxidant compounded by antioxidant 1010 and antioxidant 168 according to any ratio.
The coupling agent is a silane coupling agent, and preferably an epoxy silane coupling agent is used.
The multilayer composite structure of the Thermoplastic Polyolefin (TPO) pre-paved waterproof coiled material has the function of pre-paved anti-adhesion, and the technical principle is as follows: when in construction, the coiled material is pre-laid or temporarily fixed on the concrete surface or the compacted sand cushion layer meeting the requirements; then directly binding reinforcing steel bars, supporting templates and other working procedures on the coiled material without paving a cement mortar protective layer, then directly pouring concrete on the weather-proof mineral particle functional layer of the pre-paved waterproof coiled material, wherein the active functional groups on the surfaces of the weather-proof mineral particles can form a chemical bonding force with silicate radical production chemical bonds in cement in the curing process of silicate cement in the concrete pouring process, so that stronger chemical and mechanical riveting force is formed between the special weather-proof mineral particles and the concrete. Meanwhile, the butyl modified SIS hot melt pressure sensitive self-adhesive and cement paste automatically fill micro capillary holes on an adhesive interface under the double functions of pressure and thermal creep, and form Van der Waals attraction on the adhesive interface. Therefore, after the cement is solidified, a bonding force formed by combined forces such as Van der Waals attraction, chemical bonding force, mechanical riveting and the like is formed on the bonding interface, and further, continuous permanent and firm bonding is formed after the concrete is solidified. The water channeling channel is thoroughly eliminated, a skin-type waterproof system is formed, and even if the waterproof layer is locally damaged, the external water can not flow between the waterproof layer and the structural concrete. And the waterproof performance of the waterproof paint is obviously improved.
Example 1: the preparation method of the thermoplastic polyolefin pre-laid waterproof coiled material provided by the invention comprises the following steps:
1. process for preparing Thermoplastic Polyolefin (TPO) waterproof main body layer
Firstly, adding 1 part of reinforcing material, 0.5 part of antioxidant, 2 parts of titanium pigment, 25 parts of thermoplastic polyolefin elastomer resin and other raw materials into a mixer, mixing and stirring for 10 minutes, and preparing a reinforcing master batch by adopting a double-screw granulator; then 75 parts of thermoplastic polyolefin resin, 28.5 parts of reinforcing master batch and 10 parts of filling material are respectively added into a double-screw molding extruder with the length-diameter ratio of more than 30 through weightlessness metering equipment, and a Thermoplastic Polyolefin (TPO) waterproof main layer membrane with the thickness of 0.7mm is extruded and molded. The operation technological parameters are that the temperature of the screw is 140-195 ℃, the temperature of the die is 195-205 ℃ and the temperature of the three rollers is 50-60 ℃ respectively;
the reinforcing material is prepared by treating superfine reinforced inorganic fiber with a coupling agent on the surface, wherein the average diameter of the fiber is 10-13 um, the average length of the fiber is 70-150 um, and the length-diameter ratio is 8; the antioxidant is prepared by compounding an antioxidant 1010 and an antioxidant 168 according to a ratio of 1:1; titanium dioxide with high weather resistance and rutile type titanium dioxide; the filling material adopts 425-mesh active light calcium carbonate.
2. Preparation method of butyl modified SIS hot melt pressure sensitive self-adhesive
Firstly, sequentially adding 5 parts of polyisobutylene and 2 parts of brominated butyl rubber into an internal mixer, carrying out back mixing and banburying for 7 minutes at 130 ℃, discharging rubber and filtering, packaging and thin-passing the mixed master batch for 3 times by an open mill, and cutting into blocky mixed master batch for later use; then adding 30 parts of naphthenic white oil, 50 parts of petroleum resin and 1 part of antioxidant into a reaction kettle with a stirring device, stirring and heating to 130 ℃, adding 40 parts of SIS thermoplastic rubber after materials are sufficiently melted, stirring and heating to 190 ℃ under the protection of nitrogen, adding the formula amount of prefabricated mixed master batch, keeping the temperature and stirring for more than 30 minutes until no macroscopic particles exist, adding 0.5 part of coupling agent, cooling and stirring to 155 ℃ for later use;
the antioxidant is prepared by compounding an antioxidant 1010 and an antioxidant 168 according to a ratio of 1:1, and the coupling agent is an epoxy silane coupling agent.
3. Composite forming preparation method of coiled material
The prepared butyl modified SIS hot melt pressure sensitive self-adhesive is added into a hot melt pressure sensitive adhesive coating machine, the butyl modified hot melt pressure sensitive self-adhesive with the thickness of 0.5mm is coated on a Thermoplastic Polyolefin (TPO) waterproof main body layer with the thickness of 0.7mm by the hot melt pressure sensitive adhesive coating machine, and when the butyl modified SIS hot melt pressure sensitive self-adhesive is coated, no adhesive is coated in an area of 5 cm to 6cm inwards at one side edge of the Thermoplastic Polyolefin (TPO) waterproof main body layer to serve as a reserved construction welding lap joint area. Then covering an anti-sticking isolation edge film on the area of 3-4 cm inwards of the construction welding overlap area to serve as the construction self-sticking overlap area, and then synchronously covering the rest pressure-sensitive self-sticking layers with weather-resistant mineral particle functional layers with cement reactivity by adopting a sand spreader. Then the Thermoplastic Polyolefin (TPO) pre-laid waterproof coiled material product with the thickness of 1.2mm is prepared through the working procedures of traction compaction, cooling shaping, coiling, metering, cutting, packaging and the like.
The properties of the products were measured according to the China building Material Congress standards Thermoplastic Polyolefin (TPO) pre-laid rolls (T/CBMF 43-2019), and the data are shown in Table 1.
Referring to fig. 2 and 3, the construction process of the present invention is as follows:
the anti-sticking isolation edge membrane (4) of the lower coiled material is removed in the construction process, then the construction self-sticking overlap area (6) is exposed, the construction welding overlap area (5) of the lower coiled material is welded with the Thermoplastic Polyolefin (TPO) waterproof main body layer (1) of the upper coiled material by adopting a welding gun to realize body welding (the construction welding overlap area is a component part of the waterproof main body layer, the material composition is completely consistent, so that the body welding) is overlapped, meanwhile, the residual heat of the welding gun enables the construction self-sticking overlap area (6) to be fully melted and then automatically filled in the overlap area gap of the two coiled materials to realize seamless full sticking, and meanwhile, part of hot-melt pressure-sensitive self-sticking adhesive is deformed after being rolled by a pressing roller and is extruded to the side of the upper coiled material to be connected with the butyl modified SIS hot-melt pressure-sensitive self-sticking layer (2) of the upper coiled material to realize body bonding (the material composition is completely consistent, so that the body bonding). So that the composite overlap edge forms a jaw (shown in a detailed schematic diagram) to lock the edge of the upper coiled material after construction is completed. The composite structure combination of 'body welding lap of welding lap zone', 'seamless full adhesion of self-adhesive lap zone', 'jaw edge locking of hot melt pressure sensitive self-adhesive layer' is realized at the composite lap edge after construction is completed, thereby remarkably improving lap reliability and lap strength and finally solving the technical defect of warping and disengaging of the edge of the upper coiled material.
Example 2: the preparation method of the thermoplastic polyolefin pre-laid waterproof coiled material provided by the invention comprises the following steps:
1. process for preparing Thermoplastic Polyolefin (TPO) waterproof main body layer
Firstly, adding 10 parts of reinforcing materials, 1.5 parts of antioxidants, 3 parts of titanium pigment, 60 parts of thermoplastic polyolefin elastomer resin and other raw materials into a mixer, mixing and stirring for 20 minutes, and preparing reinforcing master batch by adopting a double-screw granulator; then, 40 parts of thermoplastic polyolefin resin, 74.5 parts of reinforcing master batch and 50 parts of filling material are respectively added into a double-screw molding extruder with the length-diameter ratio of more than 30 through weightlessness metering equipment, and a Thermoplastic Polyolefin (TPO) waterproof main layer membrane with the thickness of 1.5mm is extruded and molded. The operation technological parameters are that the temperature of the screw is 140-185 ℃, the temperature of the die is 185-195 ℃ and the temperature of the three rollers is 40-50 ℃ respectively;
the reinforcing material is prepared by treating superfine reinforced inorganic fiber with a coupling agent on the surface, wherein the average diameter of the fiber is 10-13 um, the average length of the fiber is 70-150 um, and the length-diameter ratio is 9; the antioxidant is prepared by compounding an antioxidant 1010 and an antioxidant 168 according to a ratio of 2:1; titanium dioxide with high weather resistance and rutile type titanium dioxide; the filling material adopts 425-mesh active light calcium carbonate.
2. Preparation method of butyl modified SIS hot melt pressure sensitive self-adhesive
Firstly, sequentially adding 10 parts of polyisobutylene and 5 parts of brominated butyl rubber into an internal mixer, carrying out back mixing and banburying for 8 minutes at 140 ℃, discharging rubber and filtering, packaging and thin-passing the mixed master batch for 3 times by using an open mill, and cutting the mixed master batch into blocky mixed master batch for later use; then adding 20 parts of naphthenic white oil, 35 parts of petroleum resin and 0.5 part of antioxidant into a reaction kettle with a stirring device, stirring and heating to 120 ℃, adding 25 parts of SIS thermoplastic rubber after materials are sufficiently melted, stirring and heating to 180 ℃ under the protection of nitrogen, adding the formula amount of prefabricated mixed master batch, keeping the temperature and stirring for more than 30 minutes until no macroscopic particles exist, adding 2 parts of coupling agent, cooling and stirring to 145 ℃ for later use;
the antioxidant is prepared by compounding an antioxidant 1010 and an antioxidant 168 according to a ratio of 2:1, and the coupling agent is an epoxy silane coupling agent.
3. Composite forming preparation method of coiled material
The prepared butyl modified SIS hot melt pressure sensitive self-adhesive is added into a hot melt pressure sensitive adhesive coating machine, the butyl modified hot melt pressure sensitive self-adhesive with the thickness of 0.3mm is coated on a Thermoplastic Polyolefin (TPO) waterproof main body layer with the thickness of 1.5mm by the hot melt pressure sensitive adhesive coating machine, and when the butyl modified SIS hot melt pressure sensitive self-adhesive is coated, no adhesive is coated in an area of 5 cm to 6cm inwards of one side edge of the Thermoplastic Polyolefin (TPO) waterproof main body layer to serve as a reserved construction welding lap joint area. Then covering an anti-sticking isolation edge film on the area of 3-4 cm inwards of the construction welding overlap area to serve as the construction self-sticking overlap area, and then synchronously covering the rest pressure-sensitive self-sticking layers with weather-resistant mineral particle functional layers with cement reactivity by adopting a sand spreader. Then the Thermoplastic Polyolefin (TPO) pre-laid waterproof coiled material product with the thickness of 1.8mm is prepared through the working procedures of traction compaction, cooling shaping, coiling, metering, cutting, packaging and the like.
The properties of the products were measured according to the China building Material Congress standards Thermoplastic Polyolefin (TPO) pre-laid rolls (T/CBMF 43-2019), and the data are shown in Table 1.
TABLE 1 physical Properties of the products
From the results, the product has excellent physical properties, and meets or exceeds the product performance requirements of China building Material Consortium Standard Thermoplastic Polyolefin (TPO) pre-laid coiled Material (T/CBMF 43-2019).
Example 3: the preparation method of the thermoplastic polyolefin pre-laid waterproof coiled material provided by the invention comprises the following steps:
1. process for preparing Thermoplastic Polyolefin (TPO) waterproof main body layer
Firstly, adding 5 parts of reinforcing materials, 1.0 part of antioxidants, 2 parts of titanium pigment, 50 parts of thermoplastic polyolefin elastomer resin and other raw materials into a mixer, mixing and stirring for 15 minutes, and then preparing a reinforcing master batch by adopting a double-screw granulator; then, 50 parts of thermoplastic polyolefin resin, 58 parts of reinforcing masterbatch and 25 parts of filling material are respectively added into a double-screw molding extruder with the length-diameter ratio of more than 30 through weightlessness metering equipment, and a Thermoplastic Polyolefin (TPO) waterproof main body layer membrane with the thickness of 0.9mm is extruded and molded. The operation technological parameters are that the temperature of the screw is 140-190 ℃, the temperature of the die is 190-200 ℃ and the temperature of the three rollers is 40-50 ℃ respectively;
the reinforcing material is prepared by treating superfine reinforced inorganic fiber with a coupling agent on the surface, wherein the average diameter of the fiber is 10-13 um, the average length of the fiber is 70-150 um, and the length-diameter ratio is 9; the antioxidant is prepared by compounding an antioxidant 1010 and an antioxidant 168 according to a ratio of 1:2; titanium dioxide with high weather resistance and rutile type titanium dioxide; the filling material adopts 425-mesh active light calcium carbonate.
2. Preparation method of butyl modified SIS hot melt pressure sensitive self-adhesive
Firstly, sequentially adding 5 parts of polyisobutylene and 2 parts of brominated butyl rubber into an internal mixer, carrying out back mixing and banburying for 7 minutes at 130 ℃, discharging rubber and filtering, packaging and thin-passing the mixed master batch for 3 times by an open mill, and cutting into blocky mixed master batch for later use; then adding 20 parts of naphthenic white oil, 45 parts of petroleum resin and 0.5 part of antioxidant into a reaction kettle with a stirring device, stirring and heating to 130 ℃, adding 35 parts of SIS thermoplastic rubber after materials are sufficiently melted, stirring and heating to 185 ℃ under the protection of nitrogen, adding the formula amount of prefabricated mixing master batch, keeping the temperature and stirring for more than 30 minutes until no macroscopic particles exist, adding 1 part of coupling agent, cooling and stirring to 150 ℃ for later use;
the antioxidant is prepared by compounding an antioxidant 1010 and an antioxidant 168 according to a ratio of 1:2, and the coupling agent is an epoxy silane coupling agent.
3. Composite forming preparation method of coiled material
The prepared butyl modified SIS hot melt pressure sensitive self-adhesive is added into a hot melt pressure sensitive adhesive coating machine, the butyl modified hot melt pressure sensitive self-adhesive with the thickness of 0.3mm is coated on a Thermoplastic Polyolefin (TPO) waterproof main body layer with the thickness of 0.9mm by the hot melt pressure sensitive adhesive coating machine, and when the butyl modified SIS hot melt pressure sensitive self-adhesive is coated, no adhesive is coated in an area of 5 cm to 6cm inwards of one side edge of the Thermoplastic Polyolefin (TPO) waterproof main body layer to serve as a reserved construction welding lap joint area. Then covering an anti-sticking isolation edge film on the area of 3-4 cm inwards of the construction welding overlap area to serve as the construction self-sticking overlap area, and then synchronously covering the rest pressure-sensitive self-sticking layers with weather-resistant mineral particle functional layers with cement reactivity by adopting a sand spreader. Then the Thermoplastic Polyolefin (TPO) pre-laid waterproof coiled material product with the thickness of 1.2mm is prepared through the working procedures of traction compaction, cooling shaping, coiling, metering, cutting, packaging and the like.
The above description is only a few preferred embodiments of the present invention, and any person skilled in the art may make modifications to the above described embodiments or make modifications to the same. Therefore, any simple modification or equivalent made according to the technical solution of the present invention falls within the scope of the protection claimed by the present invention.
Claims (1)
1. The preparation method of the thermoplastic polyolefin pre-laid waterproof coiled material is characterized by comprising the following steps:
adding the prepared butyl modified SIS hot-melt pressure-sensitive self-adhesive into a hot-melt pressure-sensitive adhesive coating machine, coating the butyl modified hot-melt pressure-sensitive self-adhesive with the thickness of 0.3-0.5 mm on a thermoplastic polyolefin waterproof main body layer with the thickness of 0.5-1.5 mm by the hot-melt pressure-sensitive adhesive coating machine, and coating no adhesive in an area 5-6 cm inwards from one side edge of the thermoplastic polyolefin waterproof main body layer as a reserved construction welding lap joint area during coating; then covering an anti-sticking isolation edge film on a region 3-4 cm inward of a construction welding overlap region to serve as a construction self-sticking overlap region, and then covering the rest pressure-sensitive self-sticking layers with weather-resistant mineral particle functional layers with cement reactivity by adopting a sand spreader synchronously; then the thermoplastic polyolefin pre-paved waterproof coiled material product with the thickness of 1.2-1.8 mm is manufactured through traction compaction, cooling shaping, coiling, metering and cutting;
the thermoplastic polyolefin pre-laid waterproof coiled material comprises a thermoplastic polyolefin waterproof main body layer (1), a butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2), a weather-resistant mineral particle functional layer (3), an anti-sticking isolation edge film (4), a construction welding lap joint area (5) and a construction self-adhesive lap joint area (6), wherein the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2) is formed at the upper part of the thermoplastic polyolefin waterproof main body layer (1), the construction welding lap joint area (5) is reserved at one side edge part of the thermoplastic polyolefin waterproof main body layer (1), the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2) is covered with the weather-resistant mineral particle functional layer (3) with cement reactivity, the anti-sticking isolation edge film (4) is arranged at one side edge part of the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2), the construction self-adhesive lap joint area (6) is arranged below the anti-sticking isolation edge film (4), and a composite bonding edge structure is formed by the construction lap joint area (6) and the construction welding lap joint area (5);
the manufacturing method of the thermoplastic polyolefin waterproof main body layer (1) comprises the following steps:
firstly, adding a reinforcing material, an antioxidant, titanium pigment and thermoplastic polyolefin elastomer resin into a mixer, mixing and stirring for 5-20 minutes, and then preparing a reinforcing master batch by adopting a double-screw granulator; then respectively adding the thermoplastic polyolefin resin, the reinforcing master batch and the filling material into a double-screw molding extruder with the length-diameter ratio of more than 30 through weightlessness metering equipment, and extruding and molding a thermoplastic polyolefin waterproof main body layer (1) with the thickness of 0.5-1.5 mm;
wherein, according to weight portion, thermoplastic polyolefin resin 40-75 portions; 25-60 parts of thermoplastic polyolefin elastomer resin; 0.5-10 parts of reinforcing material; 10-50 parts of filling material; 0-2 parts of antioxidant; 1-3 parts of titanium dioxide;
the preparation method of the butyl modified SIS hot-melt pressure-sensitive self-adhesive layer (2) comprises the following steps:
firstly, polyisobutylene and brominated butyl rubber are sequentially added into an internal mixer, back-mixed for 7-8 minutes at 130-140 ℃ and then discharged and filtered, and then the mixed master batch is packed and thinned through for 2-3 times by an open mill, and is cut into blocky mixed master batch for standby; adding naphthenic white oil, petroleum resin and an antioxidant into a reaction kettle with a stirring device, stirring and heating to 120-130 ℃, adding SIS thermoplastic rubber after materials are sufficiently melted, stirring and heating to 180-190 ℃ under the protection of nitrogen, adding a formula amount of prefabricated mixed master batch, stirring for more than 30 minutes under heat preservation until no macroscopic particles exist, adding a coupling agent, cooling and stirring to 145-155 ℃, and coating a hot-melt pressure-sensitive self-adhesive with the thickness of 0.3-0.5 mm on a thermoplastic polyolefin waterproof main body layer by adopting a hot-melt pressure-sensitive adhesive coating machine to form a pressure-sensitive self-adhesive layer;
wherein, according to weight portions, 25 to 40 portions of SIS thermoplastic rubber, 2 to 10 portions of modifier, 20 to 35 portions of naphthenic oil, 35 to 60 portions of petroleum resin, 5 to 10 portions of polyisobutene, 0.5 to 2 portions of antioxidant and 0 to 2 portions of coupling agent;
the weather-proof mineral particle functional layer (3) consists of synthetic sand;
the construction welding lap joint area (5) and the construction self-adhesion lap joint area (6) are adjacently arranged on the same side of the coiled material to form a composite lap joint edge structure;
the width of the construction welding lap joint area (5) is 5-6 cm, and the width of the construction self-adhesion lap joint area (6) is 3-4 cm;
the reinforced material is superfine reinforced inorganic fiber with the surface treated by a coupling agent, the average diameter of the fiber is 10-13 um, and the average length of the fiber is 70-150 um;
the filling material adopts calcium carbonate, and the titanium dioxide adopts high weather-proof rutile type titanium dioxide;
the SIS thermoplastic rubber is a styrene-isoprene-styrene block copolymer; the modifier is brominated butyl rubber, the antioxidant is a composite antioxidant formed by compounding an antioxidant 1010 and an antioxidant 168 according to any ratio, and the coupling agent is a silane coupling agent.
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| EP4108444A1 (en) * | 2021-06-21 | 2022-12-28 | Amir Rudyan | Below grade, blind side, waterproofing sheet membrane with adhesive and having improved low reflectivity granular particle layer to fully bond to concrete/shotcrete, and a method of making, and using same |
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| CN113717540B (en) * | 2021-07-26 | 2022-08-05 | 安徽大禹防水科技发展有限公司 | Thermoplastic polyolefin waterproof coiled material and preparation method thereof |
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