CN107603086A - A kind of preparation method of macromolecule multiple field waterproofing membrane - Google Patents
A kind of preparation method of macromolecule multiple field waterproofing membrane Download PDFInfo
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Abstract
The invention discloses a kind of preparation method of macromolecule multiple field waterproofing membrane, comprise the following steps：1）Including two layers of PVDF barrier layer and the PA enhancement layers being arranged between PVDF barrier layers；2）The raw material of PVDF barrier layers and PA enhancement layers are respectively put into different homogenizers and mixed；3）It is processed using Multi-layer blown film film unit, two parts of PVDF barrier layers after stirring and the raw material of a PA enhancement layers is filled extrusion operation is carried out in the charging aperture of different extruders respectively；4）Then the temperature of extrusion is controlled；5）The layers of material after each extruder institute extrusion plasticizing is converged by distributor again and is put into inflation in same mouth mold；6）Cooling device cooling is will pass through after the completion of inflation, finally forms macromolecule membrane product by traction and reel system.The present invention is prepared into the preparation method of qualified multilayer flashing film product using PVDF and PA as raw material and by adding multiple additives.
Description
Technical field
The invention belongs to chemical industry method field, and in particular to a kind of preparation method of macromolecule multiple field waterproofing membrane.
Background technology
Macromolecule membrane product, such as preservative film, polybag, food pack etc. can be usually used in the modern life, is led to
All it is often the polythene material using individual layer, and the high molecular film material intensity of individual layer is relatively low, does not reach many requirements,
So substituted using multiple field macromolecule membrane product.Multi-layer co-extruded film has the incomparable Optimality of single thin film
Can, above there is extensive selectivity in the application of material, the function of different levels can be fully demonstrated, have preferable intensity, toughness, open
The performances such as mouth property, moisture resistance, the transparency and heat sealability.It is widely used in the bag of the bulk products such as industrial chemicals, grain, chemical fertilizer
Dress, suitable for various heavy packaging bags, the making of handbag, collecting refuse bag, it is also possible to print, compound stock, have very
Big market.
And in the process of existing layer high molecule thin-film material, when ensureing to have higher structure strong, it is difficult to
Other performances can be taken into account, because including a variety of different high polymer materials in the plural layers after modified plasticizing, and
When being plastified fusion using the method for melting copolymerization, once special tune can not be carried out according to the fusing point and characteristic of its specific material
Control, can usually prevent the plastifying material poor-performing of extrusion from producing a desired effect.
The content of the invention
For more than in the prior art preparation method without targetedly problem, the present invention propose using PVDF and PA as
Raw material and the preparation method that qualified multilayer flashing film product is prepared into by adding multiple additives.
The present invention is achieved through the following technical solutions：A kind of preparation method of macromolecule multiple field waterproofing membrane, including with
Lower step：
(1) use multiple field repellent membrane mate-rials, including two layers of PVDF barrier layer and be arranged between PVDF barrier layers
PA enhancement layers, wherein PVDF barrier layers from terms of mass fraction Kynoar 60-75%, butadiene-styrene rubber 15-20% and
Poly butylene succinate 20-30%, the raw material that described PA enhancement layers use include poly- to benzene two in terms of mass fraction
Formyl hexamethylene diamine 60-70%, maleic anhydride grafting compatilizer 20-30% and polyvinyl butyral resin 15-25%；
(2) and then the raw material of PVDF barrier layers and PA enhancement layers are respectively put into different homogenizers and mixed
Stirring is closed, mixing time is in 20-30min；
(3) it is processed using Multi-layer blown film film unit, by two parts of PVDF barrier layers after stirring and a PA
The raw material of enhancement layer fill respectively carries out extrusion operation in the charging aperture of different extruders；(4) and then control what is extruded
Temperature, maintained the temperature in the raw material of processing extrusion PVDF barrier layers in the range of 165-190 DEG C, in processing PA enhancement layers
Temperature is controlled to be maintained in the range of 235-265 DEG C during raw material；
(5) again the layers of material after each extruder institute extrusion plasticizing is converged to be put into same mouth mold by distributor and blown
It is swollen；
(6) cooling device cooling is will pass through after the completion of inflation, finally forms macromolecule membrane by traction and reel system
Product.
The multi-layer co-extruded technology that the present invention uses is as raw material, by several directly using more than three kinds of plastic pellet
Extruder respectively plastify every kind of plastic molten melt after, feed in a secondary mouth mold and (or by distributor, each extruder supplied
The plastics given feed mouth mold after converging), then by being processed further handling, multi-layer compound film is made.Multi-layer co-extruded skill
Art is different from the complex techniques such as dry laminating, and the intermediate products of film-form first plastic pellet need not be made in it.In general is more
For layer co-extrusion using Multi-layer blown film film unit, described Multi-layer blown film film unit includes extruder, cooling
Vane, trailer system and reel system, and whether can reach requirement for the product quality and performances of film, extruder is to close
Key, more than three layers of co-extruding machine head can be configured with an extruder with every layer, so as to be and its it is compact, reduce cost.
The present invention includes three-decker altogether, outer two layers thickness identical PVDF barrier layers be clipped in PVDF barrier layers
PA enhancement layers, described PVDF is Kynoar, and it has the characteristic of fluororesin and resins for universal use concurrently, except with good resistance to
Chemical corrosivity, heat-resisting quantity, oxidative resistance, weatherability, outside the radiance of resistance to ray, also with piezoelectricity, dielectricity, thermoelectricity
The properties such as property.And PVDF has preferable hydrophobic performance, not only it is extremely difficult by water bedew surface, and water resistance compared with
It is good, also there is higher decay resistance, so can be effective using PVDF barrier layers made of PVDF materials in the present invention
From both sides barrier hydrone infiltration.And described PA is nylon material, nylon film is a kind of very tough and tensile film, transparent
Property is good, and has good gloss, and tensile strength, tensile strength are higher, also with preferable heat resistance, cold resistance, oil resistivity
And organic solvent resistance, wearability, paracentesis resistance are excellent, and soft, and oxygen barrier is excellent, but to the barrier of vapor compared with
Difference, the moisture absorption, penetrability are larger, and heat sealability is poor.Using PA enhancement layers made of PA materials as central structural layer, it is possible to increase
The tension tensile strength of product of the present invention, and by the way that outside PA enhancement layers, covered with PVDF barrier layers, PA materials can be made up
The defects of penetrability is higher so that the combination property of multilayer flashing film of the invention is higher.
Further, in the step (3), in the raw material of processing extrusion PVDF barrier layers, the spiral shell of extruder is controlled
Bar rotating speed is maintained at 350n/min；And in the raw material of processing extrusion PA enhancement layers, control the screw speed of extruder to keep
In 500n/min.In coextrusion-lamination film, the thickness of each layer controls by regulation extruder rotating speed, once rotating speed controls bad, meeting
The material became uneven of extrusion is caused, so as to cause end properties poor.
Further, in described (4) in the raw material of processing extrusion PVDF barrier layers, control feed zone temperature is maintained at
165-170 DEG C, stage casing temperature control keeps the temperature at 185-190 DEG C at 175-180 DEG C at head.Extruded in processing
During PVDF barrier layers, extruded by the way of temperature is stepped up, so as to be advantageous to merging between PVDF and additive
Degree.
Further, in the step (4) in the raw material of processing extrusion PA enhancement layers, control feed zone temperature is kept
At 235-240 DEG C, stage casing temperature control keeps the temperature at 250-255 DEG C at 263-265 DEG C at head.
Further, the step (2) is before the raw material using homogenizer stirring PVDF barrier layers, first by two
The raw material of part PVDF barrier layers preheat 5-6h at a temperature of 110-120 DEG C.Former material can not only fully be evaporated by preheating
Moisture in material, and the effect of melting copolymerization can be improved, making can be with merging between PVDF and additive.
Further, one layer of adhesive linkage is had additional between the PA enhancement layers and the PVDF barrier layers of both sides, it is described viscous
Connecing the raw material that layer uses includes the PVOH acetal 85-90% and dibutyl phthalate 10-15% in terms of mass fraction；
PVOH acetal and dibutyl phthalate are mixed when carrying out step (3), while using homogenizer, and with
PVDF barrier layers, the raw material of PA enhancement layers are put into Multi-layer blown film film unit simultaneously and are processed, and it is in extruder
Temperature control in the range of 180-210 DEG C.In order to further provide for the structural behaviour of whole plural layers, and increase PVDF resistances
Conjugation between interlayer and PA enhancement layers, therefore one layer of adhesive linkage, described PVOH acetal are equipped with PA enhancement layers both sides
Preferable bonding agent with preferable adhesive effect, by it is modified and with PA enhancement layers, PVDF barrier layers simultaneously into five
Layer coextrusion blow film unit carries out multilayered molten copolymerization.
The present invention compared with prior art, has the advantage that and had the beneficial effect that：The present invention by using PVDF and PA
Etc. layer high molecule waterproofing membrane made of a variety of high molecular polymers, not only with preferable waterproof barriering effect, and have
There are higher tensile strength and processing characteristics.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this,
Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, various replace is made
Change and change, all should be included within the scope of the invention.
Embodiment 1：
Present embodiment discloses a kind of preparation method of the degradable mulch of heat preservation and water control, its step includes：
A, using multiple field repellent membrane mate-rials, including two layers of PVDF barrier layer and the PA that is arranged between PVDF barrier layers
Enhancement layer, wherein PVDF barrier layers are from Kynoar 60-75%, the butadiene-styrene rubber 15-20% in terms of mass fraction and gather
Succinic acid-butanediol ester 20-30%, the raw material that described PA enhancement layers use include the poly- terephthaldehyde in terms of mass fraction
Acyl hexamethylene diamine 60-70%, maleic anhydride grafting compatilizer 20-30% and polyvinyl butyral resin 15-25%；
B, and then the raw material of PVDF barrier layers and PA enhancement layers are respectively put into different homogenizers and mixed
Stirring is closed, mixing time is in 25min；
C, it is processed using Multi-layer blown film film unit, two parts of PVDF barrier layers after stirring and a PA is added
The raw material of strong layer fill respectively carries out extrusion operation in the charging aperture of different extruders；
D, in the raw material of processing extrusion PVDF barrier layers, the screw speed of extruder is controlled to be maintained at 350n/min,
And in the raw material of processing extrusion PA enhancement layers, control the screw speed of extruder to be maintained at 500n/min；
E, in the raw material of processing extrusion PVDF barrier layers, control feed zone temperature is maintained at 169 DEG C, stage casing temperature control
System keeps the temperature at 185 DEG C at 178 DEG C at head, in the raw material of processing extrusion PA enhancement layers, controls feed zone
Temperature is maintained at 240 DEG C, and stage casing temperature control keeps the temperature at 254 DEG C at 264 DEG C at head；
F, again the layers of material after each extruder institute extrusion plasticizing is converged to be put into same mouth mold by distributor and blown
It is swollen；
G, cooling device cooling is will pass through after the completion of inflation, in inflation, it is 3-3.5 to control blow-up ratio, finally by leading
Draw and form macromolecule membrane product with reel system.
H, verification experimental verification is carried out
For the three floor height molecule waterproofing membranes manufactured using above-mentioned engineering method, multiple different components, different content are taken
The product for requiring production with different process is compareed, to determine optimal index.
Experimental group 1：The double-decker that this experimental group includes one layer of PVDF barrier layer and the fitting of PA enhancement layers forms, wherein
PVDF barrier layers are from Kynoar 65%, butadiene-styrene rubber 15% and the poly butylene succinate in terms of mass fraction
20%, the raw material that described PA enhancement layers use include the poly- hexamethylene terephthalamide 65% in terms of mass fraction, Malaysia
Acid anhydrides is grafted compatilizer 20% and polyvinyl butyral resin 15%, is then made using complete preparation technology in embodiment 1
Make so that the extrusion thickness of the PVDF barrier layers is 0.11mm, and the extrusion thickness of PA enhancement layers is 0.10mm, obtains experimental group
1 sample is placed and treats its detection.
Experimental group 2：The double-decker that this experimental group includes two layers of PVDF barrier layer and the fitting of PA enhancement layers forms, wherein
PVDF barrier layers are from Kynoar 65%, butadiene-styrene rubber 15% and the poly butylene succinate in terms of mass fraction
20%, the raw material that described PA enhancement layers use include the poly- hexamethylene terephthalamide 65% in terms of mass fraction, Malaysia
Acid anhydrides is grafted compatilizer 20% and polyvinyl butyral resin 15%, is then made using complete preparation technology in embodiment 1
Make so that the extrusion thickness of the PVDF barrier layers is 0.11mm, and the extrusion thickness of PA enhancement layers is 0.10mm, obtains experimental group
2 sample is placed and treats its detection.
Experimental group 3：The double-decker that this experimental group includes one layer of PVDF barrier layer and the fitting of PA enhancement layers forms, wherein
PVDF barrier layers are from Kynoar 65%, butadiene-styrene rubber 15% and the poly butylene succinate in terms of mass fraction
20%, the raw material that described PA enhancement layers use include the poly- hexamethylene terephthalamide 65% in terms of mass fraction, Malaysia
Acid anhydrides is grafted compatilizer 20% and polyvinyl butyral resin 15%, is then made using complete preparation technology in embodiment 1
Make so that the extrusion thickness of the PVDF barrier layers is 0.09mm, and the extrusion thickness of PA enhancement layers is 0.10mm, obtains experimental group
3 sample is placed and treats its detection.
Experimental group 4：All steps and material content are identical with above-mentioned experimental group 3, simply that the extrusion of PVDF barrier layers is thick
Degree is changed to 0.08mm, and its detection is treated in the sample placement for obtaining experimental group 4.
Experimental group 5：All steps and material content are identical with above-mentioned experimental group 3, simply that the extrusion of PVDF barrier layers is thick
Degree is changed to 0.16mm, and its detection is treated in the sample placement for obtaining experimental group 5.
Experimental group 6：All steps and material content are identical with above-mentioned experimental group 3, simply by the extrusion thickness of PA enhancement layers
0.08mm is changed to, its detection is treated in the sample placement for obtaining experimental group 6.
Experimental group 7：All steps and material content are identical with above-mentioned experimental group 3, simply by the extrusion thickness of PA enhancement layers
0.13mm is changed to, its detection is treated in the sample placement for obtaining experimental group 7.
Experimental group 8：This experimental group is improved on the basis of experimental group 2, and the material that PVDF barrier layers are used is changed
For the Kynoar 80% and poly butylene succinate 20% in terms of mass fraction, the sample placement for obtaining experimental group 8 is treated
It is detected.
Experimental group 9：This experimental group is improved on the basis of experimental group 2, and the material that PVDF barrier layers are used is changed
For the butadiene-styrene rubber of Kynoar 85% and 15% in terms of mass fraction, its detection is treated in the sample placement for obtaining experimental group 9.
Experimental group 10：This experimental group is improved on the basis of experimental group 2, and the material that PA enhancement layers use is changed to
Poly- hexamethylene terephthalamide 85% and polyvinyl butyral resin 15% in terms of mass fraction, the sample for obtaining experimental group 10 are put
Put and treat its detection.
Experimental group 11：This experimental group is improved on the basis of experimental group 2, and the material that PA enhancement layers use is changed to
Poly- hexamethylene terephthalamide 70% and maleic anhydride grafting compatilizer 30% in terms of mass fraction, obtain the sample of experimental group 11
Product are placed and treat its detection.
Experimental group 12：This experimental group is improved on the basis of experimental group 2, and the material that PA enhancement layers use is changed to
Its detection is treated in poly- hexamethylene terephthalamide 100% in terms of mass fraction, the sample placement for obtaining experimental group 12.
Experimental group 13：This experimental group is improved on the basis of experimental group 2, and the material that PVDF barrier layers are used is changed
For the Kynoar 100% in terms of mass fraction, its detection is treated in the sample placement for obtaining experimental group 13.
Experimental group 14：This experimental group is improved on the basis of experimental group 2, when PVDF barrier layers are extruded in processing, control
Temperature processed is maintained at 150 DEG C, and its detection is treated in the sample placement for obtaining experimental group 14.
Experimental group 15：This experimental group is improved on the basis of experimental group 2, when PVDF barrier layers are extruded in processing, control
Temperature processed is maintained at 190 DEG C, and its detection is treated in the sample placement for obtaining experimental group 15.
Experimental group 16：This experimental group is improved on the basis of experimental group 2, when PA enhancement layers are extruded in processing, control
Temperature is maintained at 210 DEG C, and its detection is treated in the sample placement for obtaining experimental group 16.
Experimental group 17：This experimental group is improved on the basis of experimental group 2, when PA enhancement layers are extruded in processing, control
Temperature is maintained at 260 DEG C, and its detection is treated in the sample placement for obtaining experimental group 17.
Experimental group 18：This experimental group is improved on the basis of experimental group 2, when PVDF barrier layers are extruded in processing, control
It is 170 DEG C that temperature processed, which is protected constant, and its detection is treated in the sample placement for obtaining experimental group 18.
Experimental group 19：This experimental group is improved on the basis of experimental group 2, when PA enhancement layers are extruded in processing, control
It is 240 DEG C that temperature, which is protected constant, and its detection is treated in the sample placement for obtaining experimental group 19.
Experimental group 20：This experimental group is improved on the basis of experimental group 2, not right before PVDF raw material are stirred
It is preheated, and is directly stirred, and its detection is treated in the sample placement for obtaining experimental group 20.
Then test index includes following items：
Tensile strength：Using electronics measurer for pulling force, test specimen width is 20mm, length 120mm, specimen clamping is existed
Between two chucks of fixture, two chucks do relative motion, by built in the force value sensor and machine on dynamic chuck
Displacement transducer, force value change and change in displacement during testing are collected, so as to calculate the stretching of sample, tear, change
The performance indications such as form quotient.Tensile strength formula：σ=F/b, wherein σ are tensile strength, and F is value of thrust, and b is area of section.Each
Experimental group chooses 5 groups of parallel tests, and the average value for finally taking 5 groups is the data of the experimental group.
Moisture vapor permeable performance：With reference to GB1037-1988《Plastic sheeting and the cup type method of sheet material water vapor permeability test method》
Tested, testing equipment is moisture-vapor transmission test system, is cut out with Special sample taker from the specimen surface of each experimental group
108mm × 108mm 3, sample is taken, 3 samples are distinguished into clamping on 3 test chambers of instrument, test chamber is tightened, sets
Test temperature is 20 DEG C, adjusts the pressure of nitrogen, the humidity in test chamber is reached setting value, and adjust and revolve by nitrogen flow
Button, the nitrogen flow of upper and lower intracavitary is set to reach standard setting.Click starts to test option, on-test.Instrument records automatically
The hydrone changes of contents of low humidity side during experiment, and calculate final result of the test.Each 5 groups of experimental group selection is parallel
Experiment, the average value for finally taking 5 groups are the data of the experimental group.
Film surface Defect Detection：Using existing MVC films Defect Detection system, sample size is 20 ×
20mm, determine film surface with the presence or absence of hole, foreign matter, dirty point, striped, blackening, breakage etc., each experiment by picture specimen page
Group equally choose 5 groups of parallel tests, and by 5 groups it is all the defects of counted, be just the result of the experimental group.
Test result such as following table one：
Table one
Shown according to above-mentioned test data, experimental group 1 only has one layer of PVDF barrier layer, and not only intensity declines, and waterproof
Performance is also greatly reduced, because influencing whether the PA enhancement layers of internal layer, after the water suction of PA enhancement layers, can influence whole film
Structural strength；Experimental group 2 is the product drawn fully according to the formula and preparation method of the present embodiment, and overall target is optimal；And
Experimental group 4-7 is in order to verify the thickness performance of PVDF barrier layers and PA enhancement layers, when PVDF barrier layer thickness is reduced to
During below 0.10mm, its water resistance has declined, and when PVDF barrier layers thickness is higher than 0.15mm, its water resistance is not
There is significant change, but Material Cost increased, therefore the optimum thickness of PVDF barrier layers is 0.10-0.15mm；It is similarly described
The optimum stretch intensity thickness of PA enhancement layers is 0.09mm-0.12mm；And experimental group 8-13 is to verify every layer of additive
Effect, every group of overall target declined compared to experimental group 2；And experimental group 14-19 is to change extrusion temperature
Control group, not only draw the optimal extrusion temperature scope of every layer film, and should use for PVDF barrier layers and gradually rise
The method of high-temperature is processed, and the product overall target drawn is optimal, and should use middle high both ends for PA enhancement layers
Low temperature control mode is extruded, and is advantageous to draw optimal effect；And last group of experimental group 20 is to verify
The tensile strength and water proofing property of the importance, the not film by preheating of the preheating of the preceding raw material to PVDF barrier layers of stirring
Can there is decline.Therefore experimental group 2 is best product scheme.
Embodiment 2：
According to the content of embodiment 1, and modified on the basis of embodiment 1, the PA enhancement layers and both sides
One layer of adhesive linkage is had additional between PVDF barrier layers, the raw material that the adhesive linkage uses include the poly- second in terms of mass fraction
Acetal 85% and dibutyl phthalate 15%；When carrying out step c, while homogenizer is used by PVOH acetal
Mixed with dibutyl phthalate, and multi-layer co-extruded blow is put into simultaneously with the raw material of PVDF barrier layers, PA enhancement layers
Modeling film unit is processed, and its temperature control in extruder is in the range of 180-210 DEG C.It is whole in order to further provide for
The structural behaviour of plural layers, and increase the conjugation between PVDF barrier layers and PA enhancement layers, thus it is equal in PA enhancement layers both sides
Provided with one layer of adhesive linkage, described PVOH acetal has preferable adhesive effect, is preferable bonding agent, by it is modified simultaneously
Multilayered molten copolymerization is carried out with PA enhancement layers, PVDF barrier layers into five-layer co-squeezing inflation film unit simultaneously.
Then the product added with adhesive linkage is tested, method of testing and test event are same as Example 1.And
The experimental group 2 that control group is selected in embodiment 1 is contrasted.
Test result such as following table：
Tensile strength can not only be improved by adhesive linkage, while also provide water resistance, and in actual production
Cheng Zhong, the yield rate manufactured according to the formula and method of embodiment 1 is less than embodiment 2, because can by increased adhesive linkage
Significantly improve the adhesive effect between PVDF barrier layers and PA enhancement layers.
It is described above, be only presently preferred embodiments of the present invention, any formal limitation not done to the present invention, it is every according to
Any simply modification, the equivalent variations made according to the technical spirit of the present invention to above example, each fall within the protection of the present invention
Within the scope of.
Claims (6)
- A kind of 1. preparation method of macromolecule multiple field waterproofing membrane, it is characterised in that：Comprise the following steps：（1）Using multiple field repellent membrane mate-rials, including two layers of PVDF barrier layer and the PA that is arranged between PVDF barrier layers add Strong layer, wherein PVDF barrier layers are from Kynoar 60-75%, butadiene-styrene rubber 15-20% and the polybutadiene in terms of mass fraction Sour butanediol ester 20-30%, the raw material that described PA enhancement layers use include poly- paraphenylene terephthalamide in terms of mass fraction oneself two Amine 60-70%, maleic anhydride grafting compatilizer 20-30% and polyvinyl butyral resin 15-25%；（2）Then the raw material of PVDF barrier layers and PA enhancement layers are respectively put into different homogenizers and carry out mixing and stir Mix, mixing time is in 20-30min；（3）It is processed using Multi-layer blown film film unit, two parts of PVDF barrier layers after stirring and a PA is strengthened The raw material of layer fill respectively carries out extrusion operation in the charging aperture of different extruders；（4）Then the temperature of extrusion is controlled, 165-190 DEG C of model is maintained the temperature in the raw material of processing extrusion PVDF barrier layers In enclosing, when processing the raw material of PA enhancement layers, control temperature is maintained in the range of 235-265 DEG C；（5）The layers of material after each extruder institute extrusion plasticizing is converged by distributor again and is put into inflation in same mouth mold；（6）Cooling device cooling is will pass through after the completion of inflation, finally forms macromolecule membrane product by traction and reel system.
- A kind of 2. preparation method of macromolecule multiple field waterproofing membrane according to claim 1, it is characterised in that：The step Suddenly（3）In, in the raw material of processing extrusion PVDF barrier layers, control the screw speed of extruder to be maintained at 350n/min；And In the raw material of processing extrusion PA enhancement layers, the screw speed of extruder is controlled to be maintained at 500n/min.
- A kind of 3. preparation method of macromolecule multiple field waterproofing membrane according to claim 1 or 2, it is characterised in that：Institute State（4）In processing extrusion PVDF barrier layers raw material when, control feed zone temperature be maintained at 165-170 DEG C, stage casing temperature Control keeps the temperature at 185-190 DEG C at 175-180 DEG C at head.
- A kind of 4. preparation method of macromolecule multiple field waterproofing membrane according to claim 1 or 2, it is characterised in that：Institute State step（4）In processing extrusion PA enhancement layers raw material when, control feed zone temperature be maintained at 235-240 DEG C, stage casing temperature Degree control keeps the temperature at 250-255 DEG C at 263-265 DEG C at head.
- A kind of 5. preparation method of macromolecule multiple field waterproofing membrane according to claim 1 or 2, it is characterised in that：Institute State step（2）Before the raw material using homogenizer stirring PVDF barrier layers, first by the former material of two parts of PVDF barrier layers Material preheats 5-6h at a temperature of 110-120 DEG C.
- A kind of 6. preparation method of macromolecule multiple field waterproofing membrane according to claim 1 or 2, it is characterised in that：Institute State and one layer of adhesive linkage is had additional between PA enhancement layers and the PVDF barrier layers of both sides, the raw material that the adhesive linkage uses include PVOH acetal 85-90% and dibutyl phthalate 10-15% in terms of mass fraction；Carrying out step（3）When, make simultaneously With homogenizer PVOH acetal and dibutyl phthalate are mixed, and with PVDF barrier layers, PA enhancement layers Raw material are put into Multi-layer blown film film unit and are processed simultaneously, and its temperature control in extruder is at 180-210 DEG C In the range of.
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| CN113580519A (en) * | 2021-06-02 | 2021-11-02 | 天津新兴东方临近空间航天科技有限公司 | Production process of fluororesin multilayer co-extrusion film with good gas barrier property |
| CN113619059A (en) * | 2021-08-12 | 2021-11-09 | 天津新兴东方临近空间航天科技有限公司 | Ultraviolet aging resistant fluororesin helium barrier film multilayer co-extrusion film process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580519A (en) * | 2021-06-02 | 2021-11-02 | 天津新兴东方临近空间航天科技有限公司 | Production process of fluororesin multilayer co-extrusion film with good gas barrier property |
| CN113400612A (en) * | 2021-06-21 | 2021-09-17 | 天津新兴东方临近空间航天科技有限公司 | Fluororesin-based good-stability multilayer co-extrusion film production process |
| CN113442476A (en) * | 2021-06-21 | 2021-09-28 | 天津新兴东方临近空间航天科技有限公司 | Fluororesin helium barrier film multilayer co-extrusion film process with good compatibility |
| CN113524825A (en) * | 2021-07-21 | 2021-10-22 | 天津新兴东方临近空间航天科技有限公司 | Blow molding process of multilayer co-extruded film of fluorine-containing resin for infrared hot air balloon |
| CN113547711A (en) * | 2021-07-21 | 2021-10-26 | 天津新兴东方临近空间航天科技有限公司 | Production process of multilayer co-extruded film based on fluororesin with good mechanical strength |
| CN113619059A (en) * | 2021-08-12 | 2021-11-09 | 天津新兴东方临近空间航天科技有限公司 | Ultraviolet aging resistant fluororesin helium barrier film multilayer co-extrusion film process |
| CN113619058A (en) * | 2021-08-12 | 2021-11-09 | 天津新兴东方临近空间航天科技有限公司 | Multilayer co-extrusion film technology for high and low temperature resistant fluororesin helium barrier film |
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