CN115341668A - Pre-laid waterproof coiled material and preparation method thereof - Google Patents

Abstract

The embodiment of the application discloses a pre-paved waterproof roll and a preparation method thereof. The coil stock includes: a sheet layer; the self-adhesive layer is arranged on the surface of any one side of the sheet layer, and anti-adhesion particles are adhered to the surface of the self-adhesive layer to form an anti-adhesion surface; an oil seal coating coated on the release surface; an ultraviolet-resistant coating layer coated on a surface of the oil seal coating layer; the oil sealing coating has the performance of preventing organic matters with low polarity or small molecular weight from diffusing due to the nature of the oil sealing coating, can prevent light components such as softening oil in the self-adhesive layer from migrating to the surface of the coiled material, and avoid the light components from covering the surface of anti-sticking particles or migrating from the bottom of the anti-sticking particles, thereby avoiding the anti-sticking particles from easily falling off and losing efficacy; the problem that the bonding force between the self-adhesion layer and the anti-adhesion particle layer is reduced due to the migration of the light components, the sand falling problem due to water soaking is caused, and the problem that the anti-adhesion particle layer is easy to fall and lose efficacy is avoided.

Description

Pre-laid waterproof coiled material and preparation method thereof

Technical Field

The application belongs to the technical field of building materials, and particularly relates to a pre-paved waterproof coiled material and a preparation method thereof.

Background

The existing self-adhesive film pre-paved waterproof coiled material has high strength, is a waterproof coiled material of a laminated structure consisting of a sheet layer (carrier sheet), a self-adhesive layer and an anti-sticking particle layer, has the characteristic of pre-paving and anti-sticking, and the anti-sticking particle layer of the waterproof coiled material plays an isolation role as an isolation layer, and can also be combined with post-poured concrete to play the roles of bonding and anchoring.

When the pre-paved waterproof roll is applied to a construction field, workers need to perform operations such as steel bar binding and the like on the pre-paved waterproof roll after the pre-paved waterproof roll is paved, and an anti-sticking particle layer in the pre-paved waterproof roll is easy to trample, so that the problem of foot sticking caused by the fact that particles sink and self-adhesive glue is exposed is caused; in addition, gaps exist in the arrangement of the anti-sticking particles, so that the irradiation and the damage of ultraviolet rays in sunlight cannot be completely shielded, and the performance of the self-adhesive layer is easily reduced or failed after the self-adhesive layer is laid and irradiated by sunlight for a long time; and self-adhesion glue layer and antiseized granule lug connection, the connection area is less, and the product is under the condition of drenching or water logging, and the hydrone gets into the interface between self-adhesion glue layer and the antiseized granule easily, thereby leads to antiseized granule and the bonding force decline of self-adhesive glue to appear soaking the water and fall the sand problem.

Disclosure of Invention

The embodiment of the application provides a pre-paved waterproof coiled material, and aims to solve the problem that an anti-sticking particle layer in the pre-paved waterproof coiled material is easy to fall off and lose efficacy.

Embodiments of a first aspect of the present application provide a pre-laid waterproofing membrane, the membrane comprising:

a sheet layer;

the self-adhesive layer is arranged on the surface of any one side of the sheet layer, and anti-adhesion particles are adhered to the surface of the self-adhesive layer to form an anti-adhesion surface;

an oil seal coating coated on the release surface;

an ultraviolet-resistant coating layer coated on a surface of the oil seal coating layer.

In some embodiments of the present application, the sheet layer is selected from a polymeric sheet, a rubber sheet, a composite sheet, or a combination thereof.

In some embodiments of the present application, the self-adhesive layer is selected from the group consisting of hot melt self-adhesive, solvent self-adhesive, aqueous self-adhesive, reactive self-adhesive, or combinations thereof.

In some embodiments of the present application, the anti-tack particles have a particle size of 20 to 80 mesh; and/or the presence of a gas in the gas,

the anti-sticking particles are selected from dolomite sand, mica sand, calcite sand, granite sand, quartz sand, calcium carbonate sand, magnesia sand, porcelain sand, iron sand, mullite sand, artificial sand or a combination thereof.

In some embodiments of the present application, the oil-blocking coating comprises polyvinyl alcohol; and/or the presence of a gas in the gas,

the thickness of the oil sealing coating is 0.5-10 μm, and can be selected to be 1-5 μm.

In some embodiments herein, the oil seal coating further comprises a coupling agent selected from a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, or a combination thereof.

In some embodiments of the present application, the coupling agent comprises a silane coupling agent having any one or more of a methacrylate group, an amino group, a urea group, an epoxy group, and a (meth) acryloxy group.

In some embodiments of the present application, voids are present between at least some of the anti-blocking particles, and the oil-blocking coating and the uv-resistant coating each form depressions at the voids between the anti-blocking particles.

In some embodiments of the present application, the total thickness of the UV-resistant coating and the oil-blocking coating is less than or equal to 1/10 of the lower limit of the average particle size range of the anti-sticking particles; and/or the presence of a gas in the gas,

the total thickness of the ultraviolet-resistant coating and the oil seal coating is 5-80 mu m; can be selected to be 10-50 μm.

In a second aspect, embodiments of the present application provide a method for producing the coil stock of the first aspect, the method including the steps of:

coating the pre-melted self-adhesive on one surface of the unfolded sheet to obtain a sheet layer and a self-adhesive layer;

arranging anti-sticking particles on the surface of the self-adhesive layer, and compacting to obtain an anti-sticking surface;

coating the oil sealing coating on the anti-sticking surface, and drying to obtain an oil sealing coating;

and coating the ultraviolet-resistant coating on the oil sealing coating, and drying to obtain the pre-paved waterproof roll containing the ultraviolet-resistant coating.

The application provides a coiled material, includes: a sheet layer; the self-adhesive layer is arranged on the surface of any one side of the sheet layer, and anti-adhesion particles are adhered to the surface of the self-adhesive layer to form an anti-adhesion surface; an oil seal coating coated on the release surface; an ultraviolet-resistant coating layer coated on the surface of the oil seal coating layer; the oil sealing coating has the performance of blocking the diffusion of organic matters with low polarity or low molecular weight due to the nature of the oil sealing coating, can block light components such as softening oil in the self-adhesive layer from migrating to the surface of the coiled material, and can prevent the light components from covering the surface of anti-sticking particles or migrating from the bottom of the anti-sticking particles, so that the anti-sticking particles can be prevented from falling off easily and losing efficacy; the bonding force between the self-adhesive layer and the anti-sticking particle layer is prevented from being reduced due to the migration of light components, the problem of sand falling due to water soaking is solved, and the anti-sticking particle layer is prevented from being easy to fall and lose efficacy; in addition, the oil seal coating can effectively avoid the problem of ultraviolet-resistant coating discoloration caused by light component migration.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a pre-paved waterproofing membrane provided in an embodiment of the present application.

Wherein, each reference mark in the figure is:

1. a sheet layer; 2. a self-adhesive layer; 3. anti-sticking particles; 4. oil seal coating; 5. and (3) ultraviolet-resistant coating.

Detailed Description

In order to make the purpose, technical solution and advantageous technical effects of the present invention clearer, the present invention is further described in detail with reference to the following embodiments. It should be understood that the embodiments described in this specification are only for the purpose of explaining the present application and are not intended to limit the present application.

For the sake of brevity, only a few numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form ranges not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and similarly any upper limit may be combined with any other upper limit to form a range not explicitly recited. Also, although not explicitly recited, each point or individual numerical value between the endpoints of a range is encompassed within that range. Thus, each point or individual value may, as its lower or upper limit, be combined with any other point or individual value or with other lower or upper limits to form ranges not explicitly recited.

In the description herein, it is to be noted that, unless otherwise specified, "above" and "below" are inclusive, and "a plurality" of "one or more" means two or more, "and" a plurality "of" one or more "means two or more.

The above summary of the present application is not intended to describe each disclosed embodiment or every implementation of the present application. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through lists of examples, which examples can be used in various combinations. In various embodiments, the lists are provided as representative groups and should not be construed as exhaustive.

In the prior art, anti-sticking particles in a pre-paved waterproof coiled material are easy to displace with a self-adhesive layer in environments such as treading and the like, so that the self-adhesive migrates out and the problem of sticking feet occurs; in addition, the connection area of the self-adhesive layer and the anti-sticking particles is small, and under the condition of rain or water immersion, water molecules easily enter the interface between the self-adhesive layer and the anti-sticking particles, so that the bonding force between the anti-sticking particles and the self-adhesive layer is reduced, and the service life is shortened.

Based on this, the inventor has carried out a large amount of research, finds that can avoid the light component migration in the self-adhesive glue under the mutual synergistic action of each layer in the coiled material through setting up a layer oil seal coating, and the antiseized granule for in the coiled material acts on more lastingly in the coiled material to keep the fine performance of coiled material, prolong the life of coiled material.

Coiled material

Embodiments of the first aspect of the present application provide a pre-laid waterproofing membrane, as shown in fig. 1, the membrane comprising:

a sheet layer 1;

a self-adhesive layer 2 provided on the surface of either side of the sheet layer 1, wherein anti-adhesive particles 3 are adhered to the surface of the self-adhesive layer 2 to form an anti-adhesive surface;

an oil seal coating layer 4 coated on the release surface;

and the ultraviolet-resistant coating 5 is coated on the surface of the oil seal coating 4.

According to the embodiment of the application, the oil sealing coating is arranged, and the material of the oil sealing coating can prevent the migration and diffusion of low-molecular organic matters, so that softening oil, plasticizer or other matters contained in the self-adhesive layer can be prevented from migrating to the surface of the coiled material; the oil seal coating is a film-shaped material, and can effectively prevent light components (such as micromolecular organic matters) from entering the ultraviolet-resistant coating to cause the discoloration and even the failure of the coating; the ultraviolet-resistant coating can prevent water molecules from entering an interface between the self-adhesive layer and the anti-sticking particles, so that the particles are prevented from falling off, and the stability and the durability of the coiled material are enhanced.

According to this application embodiment, because there is the space in the arranging of current antiseized granule, can't shelter from ultraviolet irradiation and destruction in the sunshine completely, easily arouse that the coiled material performance descends or inefficacy, light component when the viscose layer migrates out from the coiled material, resistant ultraviolet coating receives its influence, take place to change colour and reduce its resistant ultraviolet irradiation's performance, the setting of oil-sealing coating can effectively avoid light component to migrate to resistant ultraviolet coating, thereby effectively protected resistant ultraviolet coating's outward appearance, make the coiled material have longer and more stable resistant ultraviolet irradiation function.

According to the coiled material of this application embodiment, through the setting to different layers in the coiled material for play synergistic interaction effect between the layer, thereby give the coiled material with good stability, waterproof nature, resistant ultraviolet irradiation and durability, prolong its life.

In some embodiments, the uv-resistant coating may be applied to the coil by spraying or curtain coating, roll coating, etc. with a uv-resistant coating, and dried to form the uv-resistant coating; the main film forming material of the ultraviolet-resistant coating can be flexible resin, the ultraviolet-resistant coating can also comprise solvent type, emulsion type or reaction type resin, and the ultraviolet-resistant coating can also comprise elastomer and synthetic resin.

Illustratively, the flexible resin includes, but is not limited to, one or more combinations of acrylic resin, VAE resin, polyurethane resin, alkyd resin, polyester resin, styrene-butadiene latex, neoprene latex, styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene (SIS), hydrogenated styrene-butadiene-styrene block copolymer (SEBS), linear triblock copolymer (SEPS) in which an ethylene-propylene copolymer is an intermediate elastic block.

In some embodiments, the uv-resistant coating may further include pigments and fillers having a reflection effect on uv rays, including but not limited to one or more combinations of titanium dioxide, calcium carbonate, nano calcium carbonate, magnesium carbonate, talc, barium sulfate, lithopone, mica powder, kaolin, glass micro-beads, and metal powder. The addition of pigment and filler in the UV resistant coating can enhance the blocking resistance.

In some embodiments, the uv resistant coating may further include a coupling agent including, but not limited to, one or more combinations of silane coupling agents, phthalate coupling agents, aluminate coupling agents.

In some embodiments, the coupling agent in the uv resistant coating has one or more functional groups including methacrylic, amino, ureido, epoxy, methacryloxy silane, and the like.

According to the embodiment of the application, the coupling agent is added into the ultraviolet-resistant coating, so that the adhesive force between the ultraviolet-resistant coating and the oil seal layer can be improved, and the interface adhesive force of the jet printing ink can be improved. The ultraviolet-resistant coating can contain a coupling agent, and the problems that the coiled material product cannot be subjected to spray printing operation or is subjected to rain or water soaking for decoloration and bleeding after spray printing are solved.

In some embodiments, the sheet layer is selected from a polymeric sheet, a rubber sheet, a composite sheet, or a combination thereof.

According to the examples of the present application, the sheet in the sheet layer is a material that is flowable and moldable during processing, mainly composed of a resin (or directly polymerized by a monomer during processing), and secondarily composed of additives such as a plasticizer, a filler, a lubricant, and a colorant. Materials in the sheet include, but are not limited to: one or more of polyethylene, high density polyethylene, polypropylene, atactic polypropylene, polyolefin, ethylene-olefin copolymer, ethylene-ethyl acetate copolymer, polyacrylate, polyethylene terephthalate, polyvinyl chloride and ethylene propylene diene monomer.

In some embodiments, the self-adhesive layer is selected from the group consisting of hot melt self-adhesive, solvent-based self-adhesive, aqueous self-adhesive, reactive self-adhesive, or combinations thereof.

According to the embodiment of the application, the average thickness of the self-adhesive layer can be 0.2 mm-0.5 mm. The components of the self-adhesive layer include, but are not limited to: styrene-isoprene-styrene based self-adhesive, butyl self-adhesive, EVA self-adhesive, polyisobutylene self-adhesive, amorphous alpha-olefin copolymer based self-adhesive, natural rubber based self-adhesive, polyisoprene self-adhesive, polybutadiene based self-adhesive, random polypropylene based self-adhesive.

In some embodiments, the self-adhesive layer may further comprise a plasticizer, which is also a light component of the self-adhesive layer, and which may degrade the properties of the self-adhesive layer, thereby affecting the properties of the web.

In some embodiments, the anti-sticking particles have a particle size of 20 to 80 mesh.

According to the examples of the present application, when the particle size of the anti-adhesion particles is selected from the above-mentioned particle sizes, the oil-blocking coating layer and the ultraviolet ray resistant coating layer are facilitated to form depressions at the voids of the anti-adhesion particles. In order to avoid the quality problem caused by excessive dust or impurities in the anti-sticking particles, the particles beyond the standard particle size range are regarded as impurities for limited control, namely the total mass of the impurities beyond the standard particle size accounts for less than or equal to 5 percent of the total mass of the anti-sticking particles.

In some embodiments, the anti-sticking particles are selected from dolomite sand, mica sand, calcite sand, granite sand, quartz sand, calcium carbonate sand, magnesia calcium sand, porcelain sand, iron sand, mullite sand, synthetic sand, or combinations thereof.

In some embodiments, the anti-sticking particles may be stone sand.

According to the embodiment of the present application, the anti-sticking particles may be inorganic particles or organic particles, and the anti-sticking particles may have no requirement for whiteness, light reflectivity, light transmittance and color, and are not particularly limited, and may be selected according to actual requirements, and when the anti-sticking particles are selected from the above categories, they can have good anti-sticking performance.

In some embodiments, the oil-blocking coating comprises polyvinyl alcohol.

According to the embodiment of the application, a thin layer structure formed by coating 1-7% by mass of polyvinyl alcohol aqueous solution on the surface of a coil material in a spraying or curtain coating or roll coating mode and then drying the coating can be selected. The polyvinyl alcohol aqueous solution has certain strength after film forming; the polyvinyl alcohol has solvent resistance, and organic matters with low polarity are difficult to pass through the polyvinyl alcohol, so that the light components in the self-adhesive layer can be prevented from permeating and migrating. Polyvinyl alcohol in the oil sealing coating can completely seal the surfaces of the anti-sticking particles and the surfaces of the self-adhesive, so that the problem of sticking feet caused by overflow of the adhesive layer after the feet step on the adhesive layer is avoided, and the negative influence of ultraviolet rays on the adhesive layer can be effectively prevented. In addition, the sealing effect of the oil sealing coating also avoids the problem that after the product is soaked in water, anti-sticking particles fall (fall sand) due to the fact that water molecules attack the interface of the anti-sticking particles and the self-adhesive.

In some embodiments, the oil seal coating has a thickness of 0.5 to 10 μm, and optionally 1 to 5 μm.

In some embodiments, the polyvinyl alcohol may have a number average molecular weight of 20000 to 250000.

In some embodiments, the polyvinyl alcohol may have a degree of polymerization of 400 to 2500, has a better solubility, and can be effectively coated on a release surface.

According to the embodiment of the application, the oil seal coating is in the thickness range, the surface appearance of the particle layer cannot be obviously changed after the oil seal coating covers the surface of the anti-sticking particle, and further the anchoring effect of the coiled material and the post-cast concrete cannot be obviously influenced; if the thickness of the oil seal coating is more than 10 mu m, the surface appearance of the anti-sticking particles is influenced, so that the peeling force of the coiled material and the concrete is reduced, and the aging resistance is reduced; if the thickness of the oil seal coating is less than 0.5 μm, the oil seal coating cannot be formed into a film and cannot play an oil seal role.

In some embodiments, the oil seal coating further comprises a coupling agent selected from a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, or a combination thereof, and the oil seal coating containing the coupling agent can enhance adhesion with the anti-sticking particles and the ultraviolet resistant coating respectively.

In some embodiments, the coupling agent in the oil-sealing coating layer comprises a silane coupling agent having any one or more of a methacrylic group, an amino group, a ureido group, an epoxy group, and a (meth) acryloxy group.

In some embodiments, voids are present between at least some of the anti-tack particles, and the oil-blocking coating and the uv-resistant coating each form depressions at the voids between the anti-tack particles.

According to the embodiment of the application, in order to realize the bonding performance of the coiled material and the cast concrete and ensure the sealing performance, the oil sealing coating and the ultraviolet-resistant coating are not completely filled in the gaps among the anti-sticking particles after being dried, the original surface appearance of the anti-sticking particles is kept, and the surface of the ultraviolet-resistant coating is provided with the depression.

In some embodiments, the total thickness of the UV-resistant coating and the oil-blocking coating is less than or equal to 1/10 of the lower limit of the average particle size range of the anti-sticking particles.

According to the embodiment of the application, when the total thickness of the ultraviolet-resistant coating and the oil sealing coating is less than or equal to 1/10 of the lower limit value of the average particle size range of the anti-sticking particles, the surface appearance of the anti-sticking particles can not be changed, and when the anti-sticking coating is used, the friction force between a coiled material and concrete is enhanced, and the peeling strength between the coiled material and the concrete is improved.

In some embodiments, the total thickness of the UV resistant coating and the oil seal coating is 5-80 μm; in order to improve the bonding performance with post-cast concrete and ensure the sealing performance, the thickness of the sealing material can be 10-50 mu m.

According to the embodiment of the application, the total thickness of the ultraviolet-resistant coating and the oil seal coating after coating and drying is 5-80 μm; preferably 10 to 50 μm; through controlling the total thickness of the ultraviolet-resistant coating and the oil seal coating, the depression is formed on the basis of not changing the appearance of the surface of the anti-sticking particles, the friction capacity of the coiled material and the concrete is enhanced through the depression, and the peeling strength of the coiled material and the concrete is enhanced.

In some embodiments, in order to improve the product identification, the prior art uses ink to code or print the surface of the anti-sticking particles, and the ink is easy to fade when the roll material is soaked in rain or water. According to the embodiment of the application, code spraying or printing is carried out on the surface of the ultraviolet-resistant coating, and due to the existence of the oil sealing coating, the oil sealing coating can isolate the pollution effect of light components in the coated cover material layer on ink, so that the problem that the ink is easy to fade is solved, and in addition, the ultraviolet-resistant coating can contain a coupling agent, so that the ink is prevented from fading easily.

Method for producing coil

A second aspect of the embodiments of the present application provides a method for preparing a pre-laid waterproof roll, including the following steps:

s1, coating a pre-melted self-adhesive on one surface of an unfolded sheet to obtain a sheet layer and a self-adhesive layer;

s2, arranging anti-sticking particles on the surface of the self-adhesive layer, and compacting to obtain an anti-sticking surface;

s3, coating the oil sealing coating on the anti-sticking surface, and drying to obtain an oil sealing coating;

and S4, coating the ultraviolet-resistant coating on the oil seal coating, and drying to obtain the pre-paved waterproof roll.

In some embodiments, the self-adhesive layer in S2 may be heated to a surface temperature of 50 to 90 ℃, and then uniformly sprinkled with anti-sticking particles by a sanding device, and the heated self-adhesive layer may be a hot melt adhesive; in other embodiments, the anti-adhesive particles may also be combined with a cold self-adhesive layer, optionally a pressure sensitive adhesive.

According to the embodiment of the application, the oil-sealing coating in S3 can be dried to form the oil-sealing coating after passing through the air-blowing drying tunnel with the temperature of 50-110 ℃, and the ultraviolet-resistant coating in S4 can be dried to form the ultraviolet-resistant coating after passing through the air-blowing drying tunnel with the temperature of 50-110 ℃. Optionally, the ink is sprayed on the surface of the ultraviolet-resistant coating to improve the identification degree of the coiled material; optionally, cooling and rolling the coiled material to obtain the product.

Examples

The present disclosure is more particularly described in the following examples that are intended as illustrative only, since various modifications and changes within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise indicated, all parts, percentages, and ratios reported in the following examples are on a weight basis, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further treatment, and the equipment used in the examples is commercially available.

Example 1

A pre-paved waterproof coiled material comprises a sheet layer made of High Density Polyethylene (HDPE), a butyl hot-melt pressure-sensitive adhesive layer, a dolomite sand particle layer, an oil sealing coating and an ultraviolet-resistant coating, wherein the thickness of the sheet layer is 1.0mm, the thickness of the self-adhesive layer is 0.25mm, the particle size range of the dolomite sand is 0.18-0.38 mm, the dry thickness of the oil sealing coating is 1 mu m, and the thickness of the ultraviolet-resistant coating is 10 mu m.

The oil sealing coating is formed by drying oil sealing paint which mainly comprises polyvinyl alcohol aqueous solution containing 1% of mass fraction concentration;

the ultraviolet-resistant coating is formed by drying an ultraviolet-resistant coating, and the ultraviolet-resistant coating mainly comprises the following components in percentage by mass:

resin (thermoplastic rubber SIS, yueyanization SIS 1105) 4.30%

Resin (hydrogenated carbon five petroleum resin) 3.90%

Resin (oligo-butylene, dalin PB 1300) 3.50%

Antioxidant (BASF 168) 0.20%

UV adjuvant (BASF, 328) 0.10%

UV adjuvant (BASF, 770)% 0.10

Solvent (dichloromethane) 57.00%

Solvent (dimethyl carbonate) 22.30%

Dispersant (BYK 103) 0.30%

Pigment filler (titanium R-706) 5.00%

Pigment and filler (bamboo SP nano calcium carbonate) 3.00%

Thickener (Deshan DM-20S) 0.10%

Coupling agent (KH-560) 0.10%

0.05 percent of defoaming agent

0.05 percent of flatting agent.

The ultraviolet-resistant coating is prepared by the following method:

preparation of

(1) Respectively putting half of the metered solvent into a dispersion kettle, starting stirring, and controlling the rotating speed to be 300-400 rpm;

(2) Sequentially adding metered resin during stirring, and stirring at 300-400 rpm until the resin is completely dissolved;

(3) Adding one or more dispersants, slowly adding the dispersant into a dispersion kettle while stirring, and stirring for 5min at the rotation speed of 400-500 rpm;

(4) Slowly adding the thickening agent, the pigment and filler, the antioxidant, the ultraviolet assistant, the defoaming agent and the flatting agent while stirring in sequence, and controlling the rotating speed to be 900-1000 rpm for dispersing for 15-20 min;

(5) Slowly adding a metered coupling agent while stirring, and controlling the rotating speed to be 600-700 rpm to disperse for 5-10 min;

(6) Conveying the materials to a sand mill or a three-roller machine through a pipeline, and grinding until the maximum fineness is less than or equal to 5 mu m;

(7) Conveying the materials back to the dispersing kettle through a pipeline, adding the residual solvent into the dispersing kettle while stirring, and stirring at 300-400 rpm for 10-15 min;

(8) Filtering with 200 mesh filter screen, and discharging.

The coiled material is prepared by the following method:

(1) Pre-melting the hot melt adhesive, placing the prepared sheets on corresponding unreeling machines and aligning, and starting the unreeling machines to unreel;

(2) The sheet is stretched towards the rear end of the production line after being pulled, is uniformly coated with hot melt adhesive with corresponding thickness when passing through a gluing die head, and is continuously stretched towards the rear end after being pulled;

(3) 2, heating the material obtained in the step 2 after passing through a heating drying channel until the temperature of the surface of the hot melt adhesive is 50-90 ℃, uniformly scattering particles on the surface of the hot melt adhesive through a sand scattering device to form a particle layer, rolling and compacting the particle layer, cleaning redundant particles by a sand cleaning device, and then continuously spreading the particles to the rear end;

(4) The material obtained in the step 3 passes through the spraying channel 1, and a layer of the oil sealing coating is uniformly sprayed on the surface (particle layer surface) of the coiled material, the coating fully wets the surface of the particle layer and the surface of the hot melt adhesive in the gaps between the particle layers, and then the coating passes through an air blowing drying channel with the set temperature of 50-110 ℃ and is dried to form an oil sealing coating, and the obtained coiled material is continuously unfolded towards the rear end;

(5) 4, uniformly spraying a layer of the ultraviolet-resistant coating on the surface (oil-sealing coating surface) of the coiled material through the spraying channel 2, fully wetting the surface of the oil-sealing coating by the coating, then drying the oil-sealing coating through a blast drying channel with the temperature of 50-110 ℃ to form an ultraviolet-resistant coating, and continuously unfolding the coiled material towards the rear end;

(6) After the materials obtained in the step 5 are sprayed with LOGO LOGO or decorative printing contents by a spray printing machine, the materials continue to be unfolded towards the rear end;

(7) And (6) cooling the material obtained in the step (6) by a cooling device and then rolling to obtain the coiled material.

Example 2

A pre-paved waterproof coiled material comprises an HDPE sheet layer, an SIS-based hot-melt pressure-sensitive adhesive layer, a mullite sand particle layer, an oil sealing coating and an ultraviolet-resistant coating, wherein the thickness of the sheet layer is 0.8mm, the thickness of the self-adhesive layer is 0.4mm, the particle size range of mullite sand is 0.25-0.55 mm, the dry thickness of the oil sealing coating is 5 mu m, and the dry thickness of the ultraviolet-resistant coating is 20 mu m. The oil seal coating is formed by drying oil seal paint, and the oil seal paint mainly comprises polyvinyl alcohol aqueous solution with 3% mass fraction concentration;

the ultraviolet-resistant coating is formed by drying an ultraviolet-resistant coating, and the ultraviolet-resistant coating mainly comprises the following components in percentage by mass:

resin (SEBS, keteng G1701) 4.50%

Resin (hydrogenated DCPD resin) 3.60%

Resin (oligo-butylene, dalin PB 950) 2.50%

Antioxidant (BASF 1010) 0.20%

UV adjuvant (BASF, 326) 0.10%

UV adjuvant (BASF, 770)%

Solvent (dichloromethane) 52.00%

Solvent (ethyl acetate) 27.45%

Dispersant (EFKA 4608) 0.30%

Color filler (python R-996) 4.00%

Pigment and filler (2500 mesh talcum powder) 5.00%

Thickener (BYK-410) 0.05%

0.10 percent of coupling agent (OFS-6040)

0.05 percent of defoaming agent

0.05 percent of flatting agent.

The UV resistant coating was prepared as described in example 1.

The coil was prepared according to the preparation method described in example 1.

Example 3

A pre-paved waterproof coiled material comprises a sheet layer formed by polyvinyl chloride (PVC), a hot-melt pressure-sensitive adhesive layer formed by ethylene-vinyl acetate (EVA) copolymer, a quartz sand particle layer, an oil sealing coating and an ultraviolet-resistant coating, wherein the thickness of the sheet layer is 1.3mm, the thickness of the hot-melt adhesive layer is 0.3mm, the particle size range of quartz sand is 0.18-0.38 mm, the dry thickness of the oil sealing coating is 3 mu m, the dry thickness of the ultraviolet-resistant coating is 15 mu m, the oil sealing coating is formed by drying the oil sealing coating, and the oil sealing coating mainly comprises a polyvinyl alcohol aqueous solution containing 7 mass percent concentration;

the ultraviolet-resistant coating is formed by drying an ultraviolet-resistant coating, and the ultraviolet-resistant coating mainly comprises the following components in percentage by mass:

emulsion (badfu 327K) 34%;

0.3% of dispersant (Dow 9830);

pigment and filler (calcined kaolin of 1000 meshes) 10%

Pigment and filler (titanium dioxide, python R-996) 7%;

0.1% of a thickener (hydroxyethyl cellulose ether);

0.3 percent of coupling agent (KH-550);

0.2 percent of defoaming agent

0.1% of leveling agent;

ethanol content is 10%

38.3 percent of clean water.

The ultraviolet-resistant coating is prepared by the following method:

(1) Putting the metered emulsion into a dispersion kettle, starting stirring, and controlling the rotating speed to be 300-400 rpm;

(2) Pre-mixing one or more measured wetting dispersants with clear water accounting for 5% of the formula by mass, slowly putting the mixture into a dispersion kettle while stirring, and stirring for 5min at the rotation speed of 400-500 rpm;

(3) Premixing a thickening agent and clear water accounting for 5% of the formula by mass, slowly adding the mixture into a dispersion kettle while stirring, and controlling the rotating speed to be 500-600 rpm for dispersion for 10min;

(4) Adding the pigment, the filler, the defoamer and the flatting agent slowly while stirring in sequence, and controlling the rotating speed to be 900-1000 rpm for dispersing for 15-20 min;

(5) Conveying the material obtained in the step (4) to a sand mill or a three-roller machine through a pipeline, and grinding until the maximum fineness is less than or equal to 10 mu m;

(6) And (5) transferring the material obtained in the step (5) back to the dispersion kettle, and slowly adding the residual clear water and the metered ethanol into the stirring kettle while stirring, and uniformly stirring.

(7) Slowly adding a coupling agent into the material obtained in the step 6 by a dripping method while stirring, and controlling the rotating speed to be 600-700 rpm to disperse for 5-10 min;

(8) Filtering with 200 mesh filter screen, and discharging.

The coil was prepared according to the preparation method described in example 1.

Example 4

A pre-paved waterproof coiled material comprises a TPO sheet layer, a butyl hot-melt pressure-sensitive adhesive layer, an oil sealing coating of a porcelain sand particle layer and an ultraviolet-resistant coating, wherein the thickness of the sheet layer is 1.5mm, the thickness of the self-adhesive layer is 0.5mm, the particle size range of porcelain sand is 0.3-0.6 mm, the dry thickness of the oil sealing coating is 5 mu m, and the thickness of the ultraviolet-resistant coating is 30 mu m.

The oil-blocking coating was prepared according to the formulation and preparation method described in example 3.

The UV resistant coating was prepared according to the formulation and preparation method described in example 3.

The coil was prepared according to the preparation method described in example 1.

Comparative example 1

A pre-laid waterproof roll material, the composition and preparation method of which are basically the same as those of example 1, except that: the uv-resistant coating of comparative example 1 has a dry thickness of 60 μm.

Comparative example 2

A pre-laid waterproof roll material, the composition and preparation method of which are basically the same as those of the embodiment 2, except that: this comparative example eliminates the coupling agent in the coating and replaces it with an equal addition of solvent, i.e. the uv resistant coating composition is as follows.

Resin (SEBS, koteng G1701) 4.50%

Resin (hydrogenated DCPD resin) 3.60%

Resin (Depolybutene, dalin PB 950) 2.50%

Antioxidant (BASF 1010) 0.20%

Ultraviolet assistant (326) 0.10%

0.10 percent of ultraviolet assistant (770)

Solvent (dichloromethane) 55.00%

Solvent (ethyl acetate) 27.55%

Dispersant (EFKA 4608) 0.30%

Pigment and filler (titanium white powder, python R-996) 4.00%

Pigment and filler (2500 mesh talcum powder) 5.00%

Thickener (BYK-410) 0.05%

0.05 percent of defoaming agent

0.05 percent of flatting agent.

Comparative example 3

The composition and the preparation method of the pre-paved waterproof coiled material are basically the same as those of the embodiment 2, and the differences are that: the ultraviolet-resistant coating in the embodiment 2 is omitted in the comparative example 3, and the ultraviolet-resistant coating structurally comprises an HDPE sheet layer, an SIS-based hot-melt pressure-sensitive adhesive layer and a mullite sand particle layer, wherein the thickness of the sheet layer is 0.8mm, the thickness of the self-adhesive layer is 0.4mm, the particle size range of mullite sand is 0.25-0.55 mm, and the dry thickness of the oil seal coating is 3 micrometers.

The coiled material is prepared by the following method:

(1) Pre-melting the hot melt adhesive, placing the prepared sheets on corresponding unreeling machines and aligning, and starting the unreeling machines to unreel;

(2) The sheet is stretched towards the rear end of the production line after being pulled, is uniformly coated with hot melt adhesive with corresponding thickness when passing through the gluing die head, and is continuously stretched towards the rear end after being pulled;

(3) Heating the material obtained in the step 2 after passing through a heating drying channel to the surface temperature of the glue of 50-90 ℃, uniformly scattering particles on the surface of the hot melt adhesive through a sanding device to form a particle layer, rolling and compacting the particle layer, cleaning redundant particles by a sanding device, and then continuously spreading the particles to the rear end;

(4) The material obtained in the step 3 passes through a spraying channel 1, and a layer of the oil sealing coating is uniformly sprayed on the surface (particle layer) of the coiled material, the coating fully wets the surface of the particle layer and the surface of the hot melt adhesive in the gaps between the particle layers, and then passes through an air blowing drying channel with the temperature of 50-110 ℃ to be dried to form an oil sealing coating, and the obtained coiled material is continuously unfolded towards the rear end;

(5) Spraying brand LOGO or decorative printing content on the material obtained in the step 4 by a spray printing machine, and continuing to expand towards the rear end;

(6) And (5) cooling the material obtained in the step (5) by a cooling device, and then rolling to obtain the coiled material.

Comparative example 4

A pre-laid waterproof roll material, the composition and preparation method of which are substantially the same as those of example 4, except that: comparative example 4 the oil-blocking coating described in example 4 was eliminated and was of the following structure:

the ultraviolet-resistant coating comprises an HDPE sheet layer, a butyl hot-melt pressure-sensitive adhesive layer, a dolomite sand particle layer and an ultraviolet-resistant coating, wherein the thickness of the sheet layer is 1.0mm, the thickness of the self-adhesive layer is 0.25mm, the particle size range of dolomite sand is 0.18-0.38 mm, and the thickness of the ultraviolet-resistant coating is 10 mu m.

The coiled material is prepared by the following method:

(1) Pre-melting the hot melt adhesive, placing the prepared sheets on corresponding unreeling machines and aligning, and starting the unreeling machines to unreel;

(2) The sheet is stretched towards the rear end of the production line after being pulled, is uniformly coated with hot melt adhesive with corresponding thickness when passing through a gluing die head, and is continuously stretched towards the rear end after being pulled;

(3) Heating the material obtained in the step 2 after passing through a heating drying channel to the surface temperature of the glue of 50-90 ℃, uniformly scattering the particles on the surface of the hot melt adhesive through a sanding device to form a particle layer, rolling and compacting the particle layer, cleaning redundant particles by a sanding device, and then continuously spreading the particles to the rear end;

(4) The material obtained in the step (3) passes through a spraying channel 2, and a layer of ultraviolet-resistant coating is uniformly sprayed on the surface (oil sealing coating surface) of the coiled material, the coating fully wets the surface of the oil sealing coating, then passes through a blast drying channel with the temperature of 50-110 ℃ and is dried to form an ultraviolet-resistant coating, and the obtained coiled material is continuously unfolded towards the rear end;

(5) Spraying brand LOGO or decorative printing content on the material obtained in the step 4 by a spray printing machine, and continuing to expand towards the rear end;

(6) Cooling the material obtained in the step 5 by a cooling device and then rolling to obtain the coiled material;

performance detection

The results of partial application performance tests performed on the coils prepared in examples 1 to 4 and the coils prepared in comparative examples 1 to 4 according to actual application conditions of products are shown in the following table 1, and the results of partial important performance tests performed according to the GB/T23457-2017 standard are shown in the following table 2.

Table 1 practical application of the coils obtained in the examples and comparative examples.

Wherein N represents no discoloration, no sand loss, no bleeding, etc., and Y represents discoloration, sand loss, or bleeding.

Table 2 test performance of the example and comparative example coils.

As can be seen from Table 1, the oil seal coatings provided in examples 1 to 4 and comparative examples 1 to 2 did not show the phenomena of sand falling after soaking in water and surface discoloration after exposure to sunlight, while the oil seal coatings provided in comparative examples 3 to 4 did not show the phenomena of sand falling and discoloration, and in comparative example 2, the ultraviolet-resistant coating was not added with a coupling agent, and the soaking water was not discolored or discolored. As can be known from the table 1, the arrangement of the oil sealing coating can avoid the sand falling of the coiled material after soaking in water and the surface color change after exposure, and provides powerful guarantee for the construction of the coiled material under severe conditions.

As can be seen from Table 2, examples 1 to 4 all meet the national standard requirements and have excellent performance, comparative examples 1 and 3 do not meet the national standard requirements, and comparative examples 2 and 4 in Table 2 have poor performance in the application performance of Table 1 although the performance meets the national standard requirements, so that the performances of examples 1 to 4 are more excellent than those of comparative examples.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A pre-laid waterproofing membrane, wherein the membrane comprises:

a sheet layer;

the self-adhesive layer is arranged on the surface of any one side of the sheet layer, and anti-adhesion particles are adhered to the surface of the self-adhesive layer to form an anti-adhesion surface;

an oil seal coating coated on the release surface;

an ultraviolet resistant coating coated on a surface of the oil seal coating.

2. The web of claim 1 wherein the sheet layer is selected from a polymeric sheet, a rubber sheet, a composite sheet, or combinations thereof.

3. The web according to claim 2, wherein the self-adhesive layers are respectively selected from hot melt self-adhesive glue, solvent self-adhesive glue, aqueous self-adhesive glue, reactive self-adhesive glue or combinations thereof.

4. The web of claim 1 wherein the anti-tack particles have a particle size of 20 to 80 mesh; and/or the presence of a gas in the gas,

the anti-sticking particles are selected from dolomite sand, mica sand, calcite sand, granite sand, quartz sand, calcium carbonate sand, magnesia sand, porcelain sand, iron sand, mullite sand, artificial sand or a combination thereof.

5. The web of claim 1 wherein the oil-seal coating comprises polyvinyl alcohol; and/or the presence of a gas in the gas,

the thickness of the oil sealing coating is 0.5-10 μm, and can be selected to be 1-5 μm.

6. The coil of claim 5 wherein the oil-seal coating further comprises a coupling agent selected from a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, or combinations thereof.

7. The web of claim 6,

the coupling agent comprises a silane coupling agent with any one or more functional groups of methacrylic group, amino group, carbamido group, epoxy group and (methyl) acryloxy group.

8. The web of claim 1 wherein at least some of the release particles have voids therebetween and the oil-blocking coating and the uv-resistant coating each form depressions at the voids between the release particles.

9. The web according to claim 1 or 5,

the total thickness of the ultraviolet-resistant coating and the oil seal coating is less than or equal to 1/10 of the lower limit value of the average particle size range of the anti-sticking particles; and/or the presence of a gas in the atmosphere,

the total thickness of the ultraviolet-resistant coating and the oil sealing coating is 5-80 mu m; can be selected to be 10-50 μm.

10. A method for manufacturing a coil as claimed in any one of claims 1 to 9, characterized in that it comprises the following steps:

coating the pre-melted self-adhesive on one surface of the unfolded sheet to obtain a sheet layer and a self-adhesive layer;

arranging anti-sticking particles on the surface of the self-adhesive layer, and compacting to obtain an anti-sticking surface;

coating the oil sealing coating on the anti-sticking surface, and drying to obtain an oil sealing coating;

and coating the ultraviolet-resistant coating on the oil sealing coating, and drying to obtain the pre-paved waterproof roll containing the ultraviolet-resistant coating.

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