CN109895485A - A kind of polyvinyl butyral composite membrane and its preparation process - Google Patents
A kind of polyvinyl butyral composite membrane and its preparation process Download PDFInfo
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- CN109895485A CN109895485A CN201910009618.7A CN201910009618A CN109895485A CN 109895485 A CN109895485 A CN 109895485A CN 201910009618 A CN201910009618 A CN 201910009618A CN 109895485 A CN109895485 A CN 109895485A
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- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 title claims abstract description 135
- 239000012528 membrane Substances 0.000 title claims abstract description 67
- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims description 15
- 238000000576 coating method Methods 0.000 claims abstract description 54
- 239000011248 coating agent Substances 0.000 claims abstract description 53
- 239000003292 glue Substances 0.000 claims abstract description 52
- 238000002834 transmittance Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 27
- 210000004276 hyalin Anatomy 0.000 claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000003746 surface roughness Effects 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 11
- 239000004014 plasticizer Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 238000000265 homogenisation Methods 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- -1 triethyleneglycol ester Chemical class 0.000 claims description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 150000002085 enols Chemical class 0.000 claims 1
- 239000011521 glass Substances 0.000 abstract description 34
- 239000005336 safety glass Substances 0.000 abstract description 10
- 239000002360 explosive Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 83
- 239000010410 layer Substances 0.000 description 47
- 230000035515 penetration Effects 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 19
- 238000012360 testing method Methods 0.000 description 18
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000005340 laminated glass Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229920000831 ionic polymer Polymers 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical class OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention belongs to safety anti-explosive film field, it is high, strong to glassy bond power to provide a kind of visible light transmittance, improves the intermediate coat product of glass safety: polyvinyl butyral composite membrane.The film layer structure of polyvinyl butyral composite membrane is successively are as follows: the first PVB film layer, the first function of glue coating, transparent film layer, the second function of glue coating, the 2nd PVB film layer, the composite membrane are suitable as shield glass doubling, building curtain wall safety glass doubling etc..
Description
Technical field
The invention belongs to safety anti-explosive film field more particularly to a kind of polyvinyl butyral as intermediate coat are compound
The preparation process of film and this kind of intermediate coat.
Background technique
Glass material is with extensively in life of today, and visible glass types are different on the market, wherein common is floating
Method plate glass, monolithic semi-tempered glass etc. are all not belonging to safety glass.When these glass breakings, full wafer glass crack is from being hit
Point starts to extend to edge, forms radial discrete piece, fragment is sharp, is easy to hurt sb.'s feelings.And safety glass at present on the market is main
Have: toughened glass, laminated glass, half tempered laminated glass, toughened interlayer glass.Wherein, toughened interlayer glass is two panels tempering
The toughened interlayer safety glass that safety glass is formed by interlayer.In fragmentation, glass will be broken into obtuse angle little particle.Fragment will be firm
Admittedly be adhered on transparent binding material, be not easy to hurt sb.'s feelings.But in the case where the same fragmentation of two sheet glass, in fact it could happen that monolith
Laminated glass hang out frame the case where.
Currently, toughened interlayer glass is applied to as mainstream, but traditional PVB film doubling glass, especially skyscraper
Doubling glass wind resistance pressure difference.Especially when resisting typhoon, building glass is bent with wind pressure direction for coastal area, and deformation is broken
It splits.Therefore, to safety glass, more stringent requirements are proposed in market.And correspondingly, glass market also proposed anti-explosion safety film
Higher requirement.
In the world, DuPont Corporation develops the middle membrane of glass SGP(ionic polymer membranes of higher intensity) and Japan
Ponding develops high intensity PVB intermediate coat and substitutes tradition PVB intermediate coat, improves the safety of glass, but also forms corresponding
Corner on the market.
And the present invention is then to avoid the technology of Du Pont and ponding company, from the design of composite film material, designs multilayer
The core material of composite membrane, the skin-material guarantee and glass strong caking property and the transparency of composite film material, composite membrane provides
High strength and modulus resists wind pressure, improves security performance.
Summary of the invention
The present invention is to provide a kind of polyvinyl butyral (PVB) composite membrane to solve the problems in background technique.
A kind of polyvinyl butyral composite membrane, the composite membrane successively include the first PVB film layer, the first function of glue coating, thoroughly
Bright film layer, the second function of glue coating, the 2nd PVB film layer；
The first PVB film layer and the 2nd PVB thicknesses of layers are 200 ~ 1000 microns, and surface roughness Rz=5 ~ 55 micron are described
First PVB film layer and the 2nd PVB film layer are as prepared by polyvinyl butyral；
First function of glue coating and second function of glue coating are with a thickness of 1 ~ 15 micron, first function of glue coating and described the
The material of two function of glue coating is a kind of water soluble glue containing acrylic acid；
Transparent film layer is that material is that one of PMMA, PET, PE, PC, SGP, TPU, PVB, EVA, POM, PI optical clear are thin
Film, the transparent film layer with a thickness of 50 ~ 200 microns, it is seen that light transmittance be greater than 85%, mist degree is less than 1%.
A kind of preparation process of polyvinyl butyral composite membrane, the polyvinyl butyral composite membrane are using volume pair
What coil coating cloth combination process obtained, comprising the following steps:
S1, polyvinyl butyral resin, plasticizer and additive are sufficiently mixed, are homogenized, is plasticized and forms PVB film, and checked
The PVB film surface whether there is dirt or foreign matter, and the PVB film is used as the first PVB of polyvinyl butyral composite membrane
Film layer and the 2nd PVB film layer；
S2, by the hyaline membrane, successively process is unreeled, two sides is coated with and to form the first function of glue coating and the second function of glue coating, drying admittedly
Change, traction and tension force, two sides are contacted with the PVB film unreeled out respectively, 80 ~ 100 DEG C of main recombiner unit, 0.2 ~ 0.6MPa
Under the conditions of two-sided compound, the compound PE protective film of recombiner unit drawing-off, winding process, it is multiple finally to obtain the polyvinyl butyral
Close film.
It is preferred that step S1 in, the plasticizer is amount of carbon atom 6 ~ 8 triethyleneglycol esters.
Preferably, in step S1, the homogenization process are as follows: using thickness scanning and automatic gauge control system to PVB film
Thickness carry out accurate control, it is then that the PVB film is stretched, be formed and to make up to target thickness 200 ~ 1000 micro-
Rice, surface roughness Rz=5 ~ 55 micron, then the PVB film is wound into a roll.
Preferably, in step S1, visually inspecting film by surface video detection system and technical staff whether there is dirt
Or foreign matter.
Preferably, in the winding process of step S1, volume air in winding environment need to be purified and carries out air humidity
Control, air humidity are 25% ~ 40%
Preferably, in step S2, the two sides coating is that one kind contains propylene to coat material on the two sides of the hyaline membrane (3)
The water soluble glue of acid, 1 ~ 15 micron of one side coating thickness.
After such structure: for polyvinyl butyral composite membrane compared with tradition PVB film, most basic is optical
It is able to maintain consistent.But mechanical strength is substantially improved, tensile strength promotes 2-7 times, 30% or more penetration performance boost.It is multiple
Close film can be used as safety glass intermediate coat, can application field be shield glass doubling, building curtain wall safety glass doubling.
The present invention is further described in detail below in conjunction with attached drawing.
Detailed description of the invention
Fig. 1 is the process flow chart of polyvinyl butyral composite membrane of the invention；
Fig. 2 is the structural schematic diagram of polyvinyl butyral composite membrane of the invention；
Fig. 3 is penetration-resistant test result figure in comparative example；
Fig. 4 is penetration-resistant test result figure in embodiment 1；
Fig. 5 is penetration-resistant test result figure in embodiment 2；
Fig. 6 is penetration-resistant test result figure in embodiment 3；
Fig. 7 is penetration-resistant test result figure in embodiment 4.
Specific embodiment
In the following, being specifically described by illustrative embodiment to the present invention.It should be appreciated, however, that not chatting further
In the case where stating, original part, structure and features in an embodiment can also be advantageously incorporated into other embodiments.
It successively includes PVB film layer 1, the first function of glue coating that a kind of polyvinyl butyral composite membrane, which successively includes the composite membrane,
2, transparent film layer 3, the second function of glue coating 4, the 2nd PVB film layer 5.
First PVB film layer 1 and the 2nd PVB film layer 5 are with a thickness of 200 ~ 1000 microns, surface roughness Rz=5 ~ 55 micron, institute
It states the first PVB film layer 1 and the 2nd PVB film layer 5 is as prepared by polyvinyl butyral；
First function of glue coating 2 and the second function of glue coating 4 with a thickness of 1 ~ 15 micron, the first function of glue coating 2 and the second function of glue coating 4
Material is a kind of special water soluble glue containing acrylic acid；
Transparent film layer 3 is one of optical transparent film PMMA, PET, PE, PC, SGP, TPU, PVB, EVA, POM, PI, described
Transparent film layer 3 with a thickness of 50 ~ 200 microns, it is seen that light transmittance be greater than 85%, mist degree is less than 1%.
A kind of preparation process of polyvinyl butyral composite membrane comprising the steps of:
S1, preparation PVB film:
The raw material of PVB film are as follows: polyvinyl butyral resin (PVB resin), plasticizer and additive.PVB resin is white
Powder, it is very hard when independently forming film, it is not used in the intermediate coat of doubling safety glass, it is necessary to which mixing with plasticizer makes
With.The molecule that PVB resin and the compatibility of plasticizer depend primarily on PVB resin is constituted.Suitable plasticizer type and quantity
Determine the characteristic of film.The most important characteristic of special-purpose is mechanical property, cold resistant property, water absorbing capacity and film on glass
Cohesive force.Wherein, the triethyleneglycol ester containing 6 to 8 carbon atom carbonic acid can be widely applied to the production of high resiliency product.
When preparation, be first by PVB resin, plasticizer and some additives inject extruder, in an extruder it is all at
Divide and is thoroughly mixed to form mixture and is plasticized.In this process, because mixture unevenly will affect the machinery and light of product
Performance is learned, therefore is homogenized particularly significant.Said mixture is squeezed out by a die head in the preparation.In order to reach entire breadth
Accurate thickness carries out accurate control to the thickness of PVB film, then using thickness scanning and automatic gauge control system
It is stretched, be formed, be wound into a roll.In addition to the video detection system of surface, visually inspecting film with the presence or absence of dirt or foreign matter is also
It is very important.Coiling chamber need to be equipped with purification air-conditioning and carry out humid control, avoid the moisture content of film from changing, after last volume
It to pack immediately.PVB film with a thickness of 200 ~ 1000 microns, surface roughness Rz=5 ~ 55 micron.
These PVB films prepared are used as the first PVB film layer 1 and the 2nd PVB film layer of polyvinyl butyral composite membrane
5。
, production polyvinyl butyral composite membrane:
The production technology of composite membrane is obtained using roll-to-roll coating combination process, shown in process route Fig. 1.By the hyaline membrane 3
Successively by unreeling, two sides be coated with to be formed the first function of glue coating 2 and the second function of glue coating 4, drying oven baking and curing, traction and
Tension force, two sides are contacted with the PVB film unreeled out respectively, two-sided compound, the compound PE of recombiner unit drawing-off of main recombiner unit is protected
Cuticula, winding process finally obtain the polyvinyl butyral composite membrane.
Wherein, two sides coating process is a kind of containing the special of acrylic acid to coat material on the two sides of the hyaline membrane 3
Water soluble glue, 1 ~ 15 micron of one side coating thickness.
1 ~ embodiment of embodiment 4 presented below, to illustrate polyvinyl butyral composite membrane and its preparation work of the invention
The particular content of skill.
Embodiment 1:
A kind of polyvinyl butyral (PVB) structure of composite membrane is as shown in Figure 2.Composite membrane includes with a thickness of 380 microns, and surface is thick
First PVB film layer 1 of rugosity Rz=10 micron, the first function of glue coating 2, transparent film layer 3, the second function of glue coating 4 and with a thickness of 380
Micron, the 2nd PVB film layer 5 of surface roughness Rz=10 micron.
The process flow that polyvinyl butyral (PVB) composite membrane is realized are as follows: the PET material using 50 microns of thickness is transparent
Film 3 forms the first function of glue coating 2 and the successively by unreeling, in 3 two sides of hyaline membrane, 1 micron of coating thickness of PVB glue simultaneously
Two function of glue coating 4, hyaline membrane are through drying oven baking and curing, the traction of traction unit and tension force, PET double spread water layer
Contacted respectively with the first PVB film layer 1 for unreeling out and the 2nd PVB film layer 5, through 80 ~ 100 DEG C of main recombiner unit, 0.2 ~
The processes such as two-sided compound, the compound PE protective film of recombiner unit drawing-off, winding finally obtain product of the present invention under conditions of 0.6MPa.
The optics light transmittance 88.2% of the present embodiment product meets standard GB/T/T32020-2015 requirement, meets doubling
The most basic transparency of glass requires.
GB9656-2003 carries out penetration-resistant test to the embodiment of the present invention according to national standards, uses 2.27kg steel ball
From falling from high altitude, 5.4 meters of the penetration-resistant height of glass, comparative example penetration height is 4.1 meters, the penetration of the embodiment of the present invention
The more traditional PVB film of performance promotes 31.7%.
GB/T32020-2015 carries out tensile strength test, tensile strength to the embodiment of the present invention according to national standards
76.67Mpa, tensile strength performance are 2.65 times of comparative example 28.85Mpa.
Embodiment 2:
A kind of polyvinyl butyral (PVB) composite membrane.Composite membrane includes surface roughness Rz=25 micron with a thickness of 380 microns
The first PVB film layer 1, the first function of glue coating 2, transparent film layer 3, the second function of glue coating 4 and with a thickness of 380 microns, rough surface
Spend the 2nd PVB film layer 5 of Rz=25 micron.
The process flow that polyvinyl butyral (PVB) composite membrane is realized are as follows: use 100 microns of thickness, material is PET's
Hyaline membrane 3 successively by unreeling, in the polyurethane glue of 3 two sides of hyaline membrane while 5 microns of coating thickness, forms the first glue and applies
Layer 2 and the second function of glue coating 4.Hyaline membrane 3 is through drying oven baking and curing, the traction of traction unit and tension force, the two sides PET
Gluing water layer contacts with the first PVB film layer 1 for unreeling and the 2nd PVB film layer 5 out respectively, through 80 ~ 100 DEG C of main recombiner unit,
The processes such as two-sided compound, the compound PE protective film of recombiner unit drawing-off, winding finally obtain the present invention under conditions of 0.2 ~ 0.6MPa
Product.
The present embodiment product optics light transmittance 88.4% meets standard GB/T/T32020-2015 requirement, meets doubling glass
The most basic transparency of glass requires.
GB9656-2003 carries out penetration-resistant test to the embodiment of the present invention according to national standards, uses 2.27kg steel ball
From falling from high altitude, 5.6 meters of the penetration-resistant height of glass, comparative example penetration height is 4.1 meters, the penetration of the embodiment of the present invention
The more traditional PVB film of performance promotes 36.5%.
GB/T32020-2015 carries out tensile strength test, tensile strength to the embodiment of the present invention according to national standards
152.67Mpa, tensile strength performance are 5.3 times of comparative example 28.85Mpa.
Embodiment 3:
A kind of polyvinyl butyral (PVB) composite membrane.Composite membrane includes surface roughness Rz=5 micron with a thickness of 200 microns
The first PVB film layer 1, the first function of glue coating 2, transparent film layer 3, the second function of glue coating 4 and with a thickness of 200 microns, rough surface
Spend the 2nd PVB film layer 5 of Rz=5 micron.
The process flow that polyvinyl butyral (PVB) composite membrane is realized are as follows: use 125 microns of thickness, material for PC's
Hyaline membrane 3 successively by unreeling, in the acrylic acid glue of 3 two sides of hyaline membrane while 15 microns of coating thickness, forms the first glue
Coating 2 and the second function of glue coating 4.Hyaline membrane 3 is through drying oven baking and curing, the traction of traction unit and tension force, PC two
Face gluing water layer is contacted with the PVB film layer 1 and the 2nd PVB film layer 5 for unreeling out respectively, then through 80 ~ 100 DEG C of main recombiner unit,
The processes such as two-sided compound, the compound PE protective film of recombiner unit drawing-off, winding finally obtain the present invention under conditions of 0.2 ~ 0.6MPa
Product.
The present embodiment product optics light transmittance 88.6% meets standard GB/T/T32020-2015 requirement, meets doubling glass
The most basic transparency of glass requires.
GB9656-2003 carries out penetration-resistant test to the embodiment of the present invention according to national standards, uses 2.27kg steel ball
From falling from high altitude, 6.1 meters of the penetration-resistant height of glass, comparative example penetration height is 4.1 meters, the penetration of the embodiment of the present invention
The more traditional PVB film of performance promotes 48.7%.
GB/T32020-2015 carries out tensile strength test, tensile strength to the embodiment of the present invention according to national standards
162.33Mpa, tensile strength performance are 5.62 times of comparative example 28.85Mpa.
Embodiment 4:
A kind of polyvinyl butyral (PVB) composite membrane.Composite membrane includes surface roughness Rz=30 micron with a thickness of 380 microns
The first PVB film layer 1, the first function of glue coating 2, transparent film layer 3, the second function of glue coating 4 and with a thickness of 380 microns, rough surface
Spend the 2nd PVB film layer 5 of Rz=30 micron.
The process flow that polyvinyl butyral (PVB) composite membrane is realized are as follows: use 200 microns of thickness, material PMMA
Hyaline membrane 3 successively by unreeling, in 3 two sides of hyaline membrane, 15 microns of coating thickness of acrylic acid glue simultaneously, form the first glue
Water coating 2 and the second function of glue coating 4.Hyaline membrane 3 is through drying oven baking and curing, the traction of traction unit and tension force, PC
Double spread water layer is contacted with the PVB film layer 1 and the 2nd PVB film layer 5 for unreeling out respectively, then through main recombiner unit 80 ~ 100
DEG C, the processes such as two-sided compound, the compound PE protective film of recombiner unit drawing-off, winding finally obtain this hair under conditions of 0.2 ~ 0.6MPa
Bright product.
The present embodiment product optics light transmittance 88.6% meets standard GB/T/T32020-2015 requirement, meets doubling glass
The most basic transparency of glass requires.
GB9656-2003 carries out penetration-resistant test to the embodiment of the present invention according to national standards, uses 2.27kg steel ball
From falling from high altitude, 6.5 meters of the penetration-resistant height of glass, comparative example penetration height is 4.1 meters, the penetration of the embodiment of the present invention
The more traditional PVB film of performance promotes 58.5%.
GB/T32020-2015 carries out tensile strength test, tensile strength to the embodiment of the present invention according to national standards
172.61Mpa, tensile strength performance are 5.98 times of comparative example 28.85Mpa.
In order to illustrate the difference of the technology of the present invention Yu market general technology, comparative example is provided:
Comparative example:
Sample is the traditional PVB film for not doing complex technique processing, thickness 0.76mm, surface roughness Rz=35 micron.PVB film
Optics light transmittance is 88.5% by standard GB/T/T32020-2015 test, meets national standard.
GB9656-2003 is to the embodiment 1 to 4 and comparative example progress penetration-resistant survey in the present invention according to national standards
Examination, using 2.27kg steel ball from the penetration-resistant height of the glass in falling from high altitude, comparative example be 4.1 meters.According to national standards
GB/T32020-2015 in the present invention embodiment 1 to 4 and comparative example carry out tensile strength test, the stretching of comparative example is strong
28.25Mpa.Comparative example and the anti-tunnelling effect of embodiment are as shown in FIG. 3 to 7.
As known from Table 1, the tensile strength of the embodiment of the present invention is 2-7 times of comparative example, and mechanical strength is substantially improved；It presses
Penetration-resistant test is carried out to the embodiment of the present invention according to standard GB/T 9656-2003, using 2.27kg steel ball from falling from high altitude,
The penetration-resistant height of glass is all larger than 5 meters, and comparative example penetration height is 4.1 meters, and the penetration-resistant of the embodiment of the present invention can be compared with
Traditional PVB film promotes 30% or more.
The test of 1 penetration-resistant of table and tensile strength test results
As known from Table 2, the light transmittance of the embodiment of the present invention and comparative example is all larger than 85%, meets standard GB/T/T32020-
2015 require, and meet the most basic transparency of doubling glass and require, the present invention applies in safety glass will not influence glass
The transparency.
2 optical performance test result of table
Embodiments above is only explanation of the invention, is not limitation of the present invention, those skilled in the art
It can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as in this hair
All by the protection of Patent Law in bright scope of the claims.
Claims (8)
1. a kind of polyvinyl butyral composite membrane, it is characterised in that: the composite membrane successively includes the first PVB film layer (1),
One function of glue coating (2), transparent film layer (3), the second function of glue coating (4), the 2nd PVB film layer (5)；
With a thickness of 200 ~ 1000 microns, surface roughness Rz=5 ~ 55 are micro- for the first PVB film layer (1) and the 2nd PVB film layer (5)
Rice, the first PVB film layer (1) and the 2nd PVB film layer (5) are as prepared by polyvinyl butyral；
First function of glue coating (2) and second function of glue coating (4) are with a thickness of 1 ~ 15 micron, first function of glue coating
(2) and second function of glue coating (4) is a kind of water soluble glue containing acrylic acid；
Transparent film layer (3) is that material is one of PMMA, PET, PE, PC, SGP, TPU, PVB, EVA, POM, PI optical clear
Film, the transparent film layer (3) with a thickness of 50 ~ 200 microns, it is seen that light transmittance be greater than 85%, mist degree is less than 1%.
2. a kind of preparation process of polyvinyl butyral composite membrane as described in claim 1, which is characterized in that the poly- second
Enol butyral composite membrane is obtained using roll-to-roll coating combination process, comprising the following steps:
S1, polyvinyl butyral resin, plasticizer and additive are sufficiently mixed, are homogenized, is plasticized and forms PVB film, and checked
The PVB film surface whether there is dirt or foreign matter, and the PVB film is used as the first PVB of polyvinyl butyral composite membrane
Film layer (1) and the 2nd PVB film layer (2)；
S2, by the hyaline membrane (3), successively process is unreeled, two sides is coated with and to form the first function of glue coating (2) and the second function of glue coating
(4), baking and curing, traction and tension force, two sides contacted respectively with the PVB film unreeled out, main recombiner unit it is two-sided compound, multiple
The compound PE protective film of unit drawing-off, winding process are closed, the polyvinyl butyral composite membrane is finally obtained.
3. a kind of polyvinyl butyral composite membrane according to claim 2, it is characterised in that: in step S1, the increasing
Mould the triethyleneglycol ester that agent is amount of carbon atom 6 ~ 8.
4. a kind of preparation process of polyvinyl butyral composite membrane according to claim 3, it is characterised in that: step S1
In, the homogenization process are as follows: accurate control is carried out to the thickness of PVB film using thickness scanning and automatic gauge control system,
Then the PVB film is stretched, be formed and make up to 200 ~ 1000 microns of target thickness, surface roughness Rz=5 ~ 55
Micron, then the PVB film is wound into a roll.
5. a kind of preparation process of polyvinyl butyral composite membrane according to claim 4, it is characterised in that: step S1
In, visually inspecting film by surface video detection system and technical staff whether there is dirt or foreign matter.
6. a kind of preparation process of polyvinyl butyral composite membrane according to claim 5, it is characterised in that: step S1
Winding process in, need to be purified and be carried out air humidity control to volume air in winding environment, air humidity is 25% ~
40%。
7. according to a kind of preparation process of any polyvinyl butyral composite membrane of claim 2 ~ 6, it is characterised in that:
In step S2, the two sides coating is single to coat a kind of water soluble glue containing acrylic acid on the two sides of the hyaline membrane (3)
1 ~ 15 micron of face coating thickness.
8. according to a kind of preparation process of any polyvinyl butyral composite membrane of claim 7, it is characterised in that: step
In rapid S2, main recombiner unit carries out two-sided compound under conditions of 80 ~ 100 DEG C, 0.2 ~ 0.6MPa.
Priority Applications (1)
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| CN112239528A (en) * | 2020-09-18 | 2021-01-19 | 东莞市雄林新材料科技股份有限公司 | Environment-friendly TPU film for table mat and preparation method thereof |
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