Polymeric membrane composite glass and preparation method thereof
By introducing nano-metal oxide particles into the EVA composite film to form a multi-component composite system, the problems of insufficient heat insulation, sound insulation and safety performance of polymer film composite glass are solved, achieving more efficient heat blocking, sound wave absorption and impact energy absorption, and improving overall performance.
Patent Information
- Application Number
- CN202511792284.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-02-27
AI Technical Summary
Existing polymer film composite glass has shortcomings in terms of heat insulation, sound insulation and safety performance. In particular, the EVA composite film has poor ability to block near-infrared light and ultraviolet light, which leads to material aging and heat accumulation, poor sound insulation effect, low mechanical strength, fragility and poor wind pressure resistance.
Nanoscale metal oxide particles, such as cerium oxide, tungsten oxide, titanium oxide, and yttrium oxide, are introduced into EVA composite films to form a multi-component composite system. This system enhances the elastic modulus and viscosity by absorbing and reflecting near-infrared and ultraviolet light, and constructs a porous structure in EVA to enhance interfacial bonding strength and absorb impact energy.
It significantly improves thermal insulation performance, broadens the sound insulation frequency range, enhances mechanical strength and wind pressure resistance, and improves the overall safety and durability of composite glass.
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Abstract
Description
Technical Field
[0001] This invention relates to the technical field of polymer film composite glass, and more specifically, to a polymer film composite glass and its preparation method. Background Technology
[0002] Polymer film composite glass is mainly used in various fields such as construction, transportation, and home furnishing. Its core structure is a sandwich structure of "glass layer + polymer interlayer + glass layer". The polymer interlayer is an EVA (ethylene-vinyl acetate copolymer) composite film. The following problems exist: (1) Poor heat insulation effect. The polymer film composite glass relies solely on the EVA composite film to block solar heat. However, EVA itself has a very poor ability to block near-infrared light and ultraviolet light, which are the main carriers of solar heat. Near-infrared light and ultraviolet light can almost directly penetrate the EVA composite film. This will not only cause the composite glass material to age, but also indirectly increase heat accumulation and reduce the heat insulation effect.
[0003] (2) Poor sound insulation effect. The polymer film composite glass relies solely on the self-damping absorption of sound waves by pure EVA for noise reduction. Since EVA itself is soft, dense and non-porous, it cannot effectively block the sound wave transmission path. Therefore, the damping coefficient is low and the sound wave absorption capacity is limited. Most sound waves will directly penetrate or reflect, resulting in poor noise reduction and sound insulation effect.
[0004] (3) Low safety performance. The polymer film composite glass relies solely on the toughness of pure EVA. On the one hand, EVA is soft and has low mechanical strength, which cannot effectively absorb impact energy. The glass is prone to breakage after being subjected to external force. On the other hand, the EVA composite film has a low elastic modulus, and the overall rigidity of the composite glass is insufficient. It is prone to large bending deformation under wind pressure. Moreover, the interfacial adhesion between EVA and glass is limited, and delamination is prone to occur under long-term wind pressure circulation, resulting in poor wind pressure resistance. Summary of the Invention
[0005] This invention provides a polymer film composite glass, whose heat insulation, noise reduction, sound insulation, and safety performance are superior to existing technologies.
[0006] Another object of the present invention is to provide a method for preparing the polymer film composite glass.
[0007] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: A polymer film composite glass includes a first glass layer, a second glass layer, and an EVA composite film located between the two glass layers. The EVA composite film contains nano-metal oxide particles, including cerium oxide, tungsten oxide, titanium oxide, and yttrium oxide.
[0008] The intermediate layer of the EVA composite film in the polymer film composite glass of the present invention further includes nano-metal oxides such as cerium oxide, tungsten oxide, titanium oxide, and yttrium oxide, which has the following technical effects: (1) Excellent thermal insulation effect. On the one hand, tungsten oxide absorbs near-infrared thermal radiation, titanium oxide reflects infrared light, and cerium oxide and yttrium oxide can absorb ultraviolet light, forming a dual thermal barrier mechanism of "absorption + reflection", which prevents the EVA composite film from being penetrated by near-infrared light and ultraviolet light, thereby preventing the composite glass material from aging and increasing heat accumulation; moreover, cerium oxide and yttrium oxide can also stabilize the structure and properties of other oxides, inhibit the agglomeration and phase transformation of other components, and also prevent the aging of glass and surrounding materials, thus forming a long-term thermal insulation effect. On the other hand, nano-metal oxides have a large specific surface area, and after being uniformly dispersed, they form a continuous "thermal barrier", which can significantly reduce the thermal conductivity of the EVA composite film and improve the thermal insulation performance of polymer film composite glass.
[0009] (2) Excellent sound insulation and noise reduction performance. On the one hand, the nano-oxide particles such as tungsten oxide and tin oxide can increase the elastic modulus, density and viscosity of EVA, forming a composite system of "hard particles + soft matrix", which can effectively block the sound wave transmission path, so the damping coefficient is high and it generates strong damping absorption of mid- and low-frequency sound waves; on the other hand, the elastic modulus of the four nano-oxide particles of cerium oxide, tungsten oxide, titanium oxide and yttrium oxide are different, forming a multi-component composite system with EVA, which can broaden the sound insulation frequency range and cover mid-, high- and low-frequency noise.
[0010] (3) High safety performance. On the one hand, the nano-metal oxide particles act as "reinforcing fillers" to enhance the tensile strength, toughness and tear resistance of the EVA composite film, forming a "hard particle dispersion reinforcement" system. When the glass is impacted, the nanoparticles can hinder crack propagation, disperse impact energy and prevent the glass from shattering instantly. On the other hand, they can improve the interfacial bonding strength between the EVA composite film and the glass layer, prevent the composite glass from peeling and delaminating under repeated wind pressure, and improve wind pressure resistance durability.
[0011] Preferably, the nano-metal oxide particles further include tin oxide, antimony oxide, and cesium oxide.
[0012] Preferably, the intermediate layer of the EVA composite film includes micron-sized porous channels, in which nano-metal oxide particles are uniformly filled.
[0013] The EVA composite membrane described in this invention has a porous composite structure with a porosity of 20-35% and a pore size of 8-15 μm.
[0014] In polymer film composite glass, micron-level pore channels are constructed through porous EVA structures. The air inside the pore channels can further attenuate sound waves, and the nano-oxides fill the inner walls of the pore channels, forming a dual effect of "pore damping + particle damping", which enhances the sound insulation and noise reduction effect.
[0015] The porous EVA structure in polymer film composite glass can further absorb impact energy through the "buffering effect" of the pore channels, reducing the direct impact force on the glass and resulting in high safety performance.
[0016] Preferably, the nano-metal oxide particles are hydrophobically modified by fluorosilane.
[0017] Surface modification of fluorosilane-modified nano-oxides introduces groups (such as siloxy groups) that strongly interact with hydroxyl groups (-OH) on the glass surface. During the hot pressing process of the composite glass (EVA melting temperature 80-120℃), the modified nano-oxides are guided to migrate to the interface between EVA and glass using temperature gradients and molecular attraction, and ultimately adsorb onto the inner surface of the glass (closer to the EVA layer). Utilizing the low surface energy of fluorosilanes, hydrophobic groups (such as -CF3) are partially exposed on the outer surface of the glass through "interfacial penetration," forming a superhydrophobic coating (contact angle ≥150°), eliminating the need for additional coating on the outer surface of the glass.
[0018] The nano-metal oxide particles are hydrophobically modified with fluorosilane, and the specific steps are as follows: Step 1: Mix the nano-metal oxides in the original proportion, add anhydrous ethanol, and ultrasonically disperse to prepare an oxide dispersion with a concentration of 8-13%. Step 2: Add fluorosilane to the oxide dispersion and stir evenly at 45~55℃ to allow the fluorosilane to fully graft onto the oxide surface and form a hydrophobic modified oxide.
[0019] Preferably, the contents of cerium oxide, tungsten oxide, titanium oxide and yttrium oxide in the EVA composite film are 0.01%~0.015%, 0.02%~0.03%, 0.005%~0.01%, and 0.02%~0.03%, respectively.
[0020] More preferably, the contents of tin oxide, antimony oxide and cesium oxide in the EVA composite film are 0.005~0.01%, 0.01~0.015%, and 0.01~0.015%, respectively.
[0021] Preferably, the particle size of the nano-metal oxide particles is 30~80nm.
[0022] Preferably, the thickness of the EVA composite film is 0.5~3mm.
[0023] This invention also provides a method for preparing the polymer film composite glass according to any one of the above claims, comprising the following steps: S1. Preparation of EVA composite film: Nano-metal oxide particles are mixed with deionized water to prepare a filling solution with a concentration of 5%-8%, which is then immersed in EVA sheet and dried to obtain EVA composite film; S2. Composite molding: The first glass layer, EVA composite film and second glass layer are stacked in the order of stacking, and placed in a hot press. After heating and pressing and cooling in sequence, polymer film composite glass is obtained.
[0024] Preferably, the EVA sheet in S1 has a micron-sized porous channel structure, and the method for preparing the porous EVA sheet includes the following steps: S01. Mix EVA particles with polylactic acid microspheres and stir until homogeneous to obtain a mixture; S02. The mixture is placed in a hot press and pre-pressed to produce a preliminary EVA sheet; S03. After soaking, dissolving, and washing the pre-formed EVA sheet, polylactic acid microspheres are removed to obtain a porous EVA sheet.
[0025] In the S01 of the present invention, the mass ratio of EVA particles to polylactic acid microspheres is (80~90):(10~20).
[0026] The pre-compression process in SO2 described in this invention involves pre-compressing at 75~85℃ and 0.4~0.6MPa for 2~5 minutes; In the present invention, the side of the first and second glass layers that are in contact with the EVA composite film in S2 is coated with an interface inducing agent, with an inducing agent dosage of 0.4~0.6 g / m².
[0027] The interface inducing agent described in this invention is selected from γ-aminopropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane (KH-570), 3-(2,3-epoxypropoxy)propyltrimethoxysilane, N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane or tridecafluorooctyltriethoxysilane. Detailed Implementation
[0028] The present invention will be further described in detail below with reference to specific embodiments.
[0029] Example 1 A polymer film composite glass includes a first glass layer, a second glass layer, and an EVA composite film located between the two glass layers. The EVA composite film contains nano-metal oxide particles, which are hydrophobically modified by fluorosilane. The content of each nano-metal oxide particle in the EVA composite film is as follows: 0.013% cerium oxide, 0.025% tungsten oxide, 0.008% titanium oxide, 0.025% yttrium oxide, 0.008% tin oxide, 0.013% antimony oxide, and 0.013% cesium oxide. The nano-metal oxide particle size is 50 nm. The EVA composite film thickness is 2 mm. The EVA composite film has a porous composite structure, including micron-sized porous channels with a pore size of 10 μm and a porosity of 30%. The nano-metal oxide particles are uniformly filled in the porous channels.
[0030] The preparation method of polymer film composite glass includes the following steps: S1. Preparation of EVA composite membrane: Nano-metal oxide particles were mixed with deionized water to prepare a 6% concentration filling solution, which was then poured into a vacuum impregnation tank. Porous EVA sheets were then placed in the tank, and a vacuum of -0.09 MPa was applied and maintained for 20 minutes to allow the filling solution to fully penetrate the pores. Finally, the EVA sheets were removed and placed in a hot air dryer at 70°C for 30 minutes to dry, resulting in an EVA composite membrane. The nano-metal oxide particles are hydrophobically modified with fluorosilane, specifically including the following steps: (1) Take nano metal oxides and mix them in proportion, add anhydrous ethanol, and ultrasonically disperse for 30 min (power 200W) to prepare an oxide dispersion with a concentration of 10%; (2) Add fluorosilane to the dispersion and stir at 50°C for 60 min (1500 r / min) to allow the fluorosilane to fully graft onto the oxide surface and form hydrophobic modified nano metal oxide; The method for preparing the porous EVA sheet includes the following steps: S01. Mix EVA particles with polylactic acid microspheres, place in a high-speed mixer at 2000 r / min for 15 min, and stir until homogeneous to obtain a mixture; the mass ratio of EVA particles to polylactic acid microspheres is 85:15; S02. Place the mixture into a hot press and pre-press it to form a preliminary EVA sheet with a thickness of 1.0-1.2 mm; the pre-pressing process is to pre-press at 80℃ and 0.5MPa for 3 minutes. S03. Place the pre-compressed EVA sheet into an ethanol cleaning tank and soak for 30 minutes to dissolve and remove polylactic acid microspheres, forming micron-level porous channels to obtain porous EVA sheet.
[0031] S2. Composite Molding: The first glass layer, EVA composite film, and second glass layer are stacked in that order and placed in a hot press. After hot pressing and cooling, the polymer film composite glass is obtained. The specific steps include: S21. Glass surface pretreatment: (1) The first glass layer and the second glass layer are cleaned with deionized water to remove surface oil and impurities, and then dried with hot air (60℃, 10min). (2) On the inner surface of the first glass layer (the side in contact with EVA), a layer of interface inducer γ-aminopropyltriethoxysilane is uniformly coated with an amount of 0.5 g / m², and the mixture is allowed to air dry for 15 min to enhance the bonding force with the modified oxide. S22. Composite molding: (1) Stack the layers in the order of “first glass layer (with the inducing agent side facing inward) → EVA composite film → second glass layer” and place them in a hot press; (2) Set hot pressing parameters: heat up to 103℃, press up to 1.3MPa, and hold for 30min. During this period, EVA melts and bonds, while the modified oxide migrates directionally to the glass interface under the action of the inducing agent. (3) Cool to room temperature at a rate of 5℃ / min to obtain polymer composite film glass; S33: Enhanced hydrophobic function: If the superhydrophobic effect does not meet expectations (contact angle < 150°), after composite molding, irradiate the outer surface of the glass with a UV curing machine for 10 minutes (wavelength 365nm) to activate the exposure of hydrophobic groups and ensure that the contact angle is ≥ 150° to obtain polymer film composite glass.
[0032] Example 2 This embodiment is the second embodiment of the present invention. Unlike embodiment 1, the polymer film composite glass in which the EVA composite film nano-metal oxide particles do not contain tin oxide, antimony oxide and cesium oxide.
[0033] Example 3 This embodiment is the third embodiment of the present invention. Unlike embodiment 1, the polymer film composite glass in which the EVA composite film nano metal oxide particles have not undergone hydrophobic modification is described.
[0034] In the preparation method of polymer film composite glass, the preparation of S1.EVA composite film does not include the hydrophobic modification step of nano-metal oxide particles.
[0035] Example 4 This embodiment is the fourth embodiment of the present invention. Unlike embodiment 1, the polymer film composite glass in this embodiment does not have micron-level porous channels.
[0036] In the preparation method of polymer film composite glass, the preparation of S1.EVA composite film is as follows: (1) EVA particles and nano-oxides were dried at 80℃ for 4-6 hours to remove moisture. Then, 0.5% calcium stearate was added to the nano-oxides as a dispersant and ultrasonically dispersed for 30 minutes to initially break up the agglomeration. (2) The dried EVA particles and nano oxides are put into a high-speed mixer in proportion and dry-mixed at 1200r / min for 15-20min; then the mixture is fed into a twin-screw extruder and the barrel temperature is controlled (segmented temperature control: feeding section 110℃, melting section 120℃, extrusion section 130℃), and the screw speed is 350r / min; finally, the extruded material is pelletized by an underwater pelletizer, cooled with cold water and dried to obtain “EVA-nano oxide” composite masterbatch.
[0037] (3) The composite masterbatch is fed into a single-screw extrusion casting machine with a barrel temperature of 120-135℃ and a die temperature of 130-135℃. It is cooled and shaped by casting rollers (temperature 30-40℃) with a traction speed of 4m / min to prepare an EVA composite film with a thickness of 2mm.
[0038] Example 5 This embodiment is the fifth embodiment of the present invention. The difference from embodiment 1 is that the polymer film composite glass contains EVA composite film with a nano-metal oxide particle size of 30 nm.
[0039] Example 6 This embodiment is the sixth embodiment of the present invention. Unlike embodiment 1, the polymer film composite glass contains EVA composite film with a nano-metal oxide particle size of 80 nm.
[0040] Example 7 This embodiment is the 7th embodiment of the present invention. The difference from embodiment 1 is that the polymer film composite glass has an EVA composite film thickness of 0.5 mm.
[0041] Example 8 This embodiment is the 8th embodiment of the present invention. The difference from embodiment 1 is that the polymer film composite glass has an EVA composite film thickness of 3 mm.
[0042] Example 9 This embodiment is the 9th embodiment of the present invention. Unlike embodiment 1, the polymer film composite glass has an EVA composite film with a porous composite structure, a porosity of 20%, and a pore size of 15 μm.
[0043] In the method for preparing the polymer film composite glass, the method for preparing the porous EVA sheet in step S1... The mass ratio of S01.EVA particles to polylactic acid microspheres is 80:20; S02. The pre-compression process is to pre-compress at 85℃ and 0.4MPa for 2 minutes.
[0044] Example 10 This embodiment is the 10th embodiment of the present invention. Unlike embodiment 1, the polymer film composite glass has an EVA composite film with a porous composite structure, a porosity of 35%, and a pore size of 8 μm.
[0045] In the method for preparing the polymer film composite glass, the method for preparing the porous EVA sheet in step S1... The mass ratio of S01.EVA particles to polylactic acid microspheres is 90:10; S02. The pre-compression process is to pre-compress at 75℃ and 0.6MPa for 5 minutes.
[0046] Example 11 This embodiment is the 11th embodiment of the present invention. Unlike embodiment 4, the polymer film composite glass contains 0.01% cerium oxide, 0.02% tungsten oxide, 0.005% titanium oxide, 0.02% yttrium oxide, 0.005% tin oxide, 0.01% antimony oxide, and 0.01% cesium oxide in the EVA composite film; the nano-metal oxide particles have a particle size of 30 nm; the EVA composite film has a thickness of 0.5 mm and does not have micron-level porous channels; and the nano-metal oxide particles have not undergone hydrophobic modification.
[0047] In the method for preparing polymer film composite glass S2. In the composite molding, S21, (2) on the inner surface of the first glass layer (the side in contact with EVA), a layer of interface inducer γ-methacryloyloxypropyltrimethoxysilane (KH-570) is uniformly coated, with an inducer dosage of 0.4 g / m². S22 (2) Hot pressing parameters: temperature up to 100℃, pressure up to 1.0MPa.
[0048] Example 12 This embodiment is the 12th embodiment of the present invention. Unlike embodiment 4, the polymer film composite glass contains 0.015% cerium oxide, 0.03% tungsten oxide, 0.01% titanium oxide, 0.03% yttrium oxide, 0.01% tin oxide, 0.015% antimony oxide, and 0.015% cesium oxide in the EVA composite film; the nano-metal oxide particles have a particle size of 80 nm; the EVA composite film has a thickness of 3 mm and does not have micron-level porous channels; and the nano-metal oxide particles have not undergone hydrophobic modification.
[0049] In the method for preparing polymer film composite glass S2. In the composite molding, S21, (2) on the inner surface of the first glass layer (the side in contact with EVA), a layer of interface inducer 3-(2,3-epoxypropoxy)propyltrimethoxysilane is uniformly coated, with an inducer dosage of 0.6 g / m². S22 (2) Hot pressing parameters: temperature up to 105℃, pressure up to 1.5MPa.
[0050] Comparative Example 1 This comparative example is the first comparative example of the present invention. Unlike Example 4, the polymer film composite glass in this example does not contain nano-metal oxide particles in the EVA composite film.
[0051] Comparative Example 2 This comparative example is the second comparative example of the present invention. Unlike Example 4, the polymer film composite glass in which the EVA composite film contains nano-metal oxide particles does not contain cerium oxide.
[0052] Comparative Example 3 This comparative example is the third comparative example of the present invention. Unlike Example 4, the polymer film composite glass in this example does not contain tungsten oxide in the nano-metal oxide particles of the EVA composite film.
[0053] Comparative Example 4 This comparative example is the fourth comparative example of the present invention. Unlike Example 4, the polymer film composite glass in this example does not contain titanium oxide in the nano-metal oxide particles of the EVA composite film.
[0054] Comparative Example 5 This comparative example is the fifth comparative example of the present invention. Unlike Example 4, the polymer film composite glass in which the EVA composite film contains nano-metal oxide particles does not contain cerium oxide or tungsten oxide.
[0055] Comparative Example 6 This comparative example is the sixth comparative example of the present invention. Unlike Example 4, the polymer film composite glass in this example does not contain titanium oxide, cerium oxide, or tungsten oxide in the nano-metal oxide particles of the EVA composite film.
[0056] Performance testing: The heat insulation performance is tested using the following method: An infrared spherical heating lamp is placed on a constant-speed motor, rotating at a speed of 10 revolutions per minute. The polymer film composite glass obtained in each embodiment or comparative example is placed 20cm away from the spherical lamp. An infrared intensity tester is placed 5cm behind the polymer film composite glass away from the spherical lamp to test the infrared intensity. The heat insulation performance of the polymer film composite glass obtained in each embodiment or comparative example is judged based on the infrared transmittance. The lower the infrared transmittance, the better the heat insulation effect of the composite glass.
[0057] The thermal insulation performance test results of the polymer film composite glass obtained in each embodiment and comparative example are shown in Table 1.
[0058] The sound insulation and noise reduction performance is tested using the following method: A sound generator with controllable sound volume is placed inside a five-sided sealed box. The sound volume inside the sealed box remains constant. The polymer film composite glass obtained in each embodiment and comparative example is placed on the sixth side of the sealed box. A decibel meter for measuring sound volume is placed outside the sealed box. The sound insulation and noise reduction performance of the composite glass is judged based on the decibel decrease in sound outside the sealed box. The greater the sound reduction, the better the sound insulation effect of the composite glass.
[0059] The thermal insulation performance test results of the polymer film composite glass obtained in each embodiment and comparative example are shown in Table 1.
[0060] Safety performance testing: The safety performance test results of the polymer film composite glass obtained in each embodiment and comparative example are shown in Table 1.
[0061] A 50g iron ball is placed 50cm above the center of a flat surface of glass. One end of the iron ball is fixed to a thin string. The string is cut, and the iron ball falls freely onto the center of the glass. If the glass does not break or breaks only slightly and the fragments are few and concentrated, the safety is good. If the glass breaks and the fragments are scattered, the safety is poor.
[0062] Table 1. Performance tests of polymer film composite glasses obtained in Examples 1-12 and Comparative Examples 1-6
[0063] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on the present invention will still fall within the scope of patent protection.
Claims
1. A polymer film composite glass, comprising a first glass layer, a second glass layer, and an EVA composite film located between the two glass layers, characterized in that, The EVA composite film contains nano-metal oxide particles, including cerium oxide, tungsten oxide, titanium oxide, and yttrium oxide.
2. The polymer film composite glass according to claim 1, characterized in that, The nano-metal oxide particles also include tin oxide, antimony oxide, and cesium oxide.
3. The polymer film composite glass according to claim 1 or 2, characterized in that, The intermediate layer of the EVA composite film includes micron-sized porous channels, in which nano-metal oxide particles are uniformly filled.
4. The polymer film composite glass according to claim 1 or 2, characterized in that, The nano-metal oxide particles are hydrophobically modified with fluorosilane.
5. The polymer film composite glass according to claim 1, characterized in that, The contents of cerium oxide, tungsten oxide, titanium oxide and yttrium oxide in the EVA composite film are 0.01%~0.015%, 0.02%~0.03%, 0.005%~0.01%, and 0.02%~0.03%, respectively.
6. The polymer film composite glass according to claim 2, characterized in that, The contents of tin oxide, antimony oxide and cesium oxide in the EVA composite film are 0.005~0.01%, 0.01~0.015%, and 0.01~0.015%, respectively.
7. The polymer film composite glass according to claim 1, characterized in that, The particle size of the nano-metal oxide particles is 30~80nm.
8. The polymer film composite glass according to claim 1, characterized in that, The thickness of the EVA composite film is 0.5~3mm.
9. The method for preparing polymer film composite glass according to any one of claims 1 to 8, characterized in that, Includes the following steps: S1. Preparation of EVA composite film: Nano-metal oxide particles are mixed with deionized water to prepare a filling solution with a concentration of 5%-8%, which is then immersed in EVA sheet and dried to obtain EVA composite film; S2. Composite molding: The first glass layer, EVA composite film and second glass layer are stacked in the order of stacking, and placed in a hot press. After heating and pressing and cooling in sequence, polymer film composite glass is obtained.
10. The method for preparing polymer film composite glass according to claim 9, characterized in that, The EVA sheet in S1 has a micron-sized porous channel structure. The method for preparing the porous EVA sheet includes the following steps: S01. Mix EVA particles with polylactic acid microspheres and stir until homogeneous to obtain a mixture; S02. The mixture is placed in a hot press and pre-pressed to produce a preliminary EVA sheet; S03. After soaking, dissolving, and washing the pre-formed EVA sheet, polylactic acid microspheres are removed to obtain a porous EVA sheet.