Solvent-free preparation method of a glass mirror anti-shattering and anti-splashing fabric composite film material

Abstract

The present invention relates to a fabric composite film material, and discloses a solvent-free preparation method of a fabric composite film material for preventing glass mirrors from being broken and splashed, aiming to solve the problems of complex steps, high temperature requirement, use of solvents, long curing time, etc. in the traditional method. The method comprises the following steps: crushing EVA resin and rosin into powders with an average particle size, and mixing them with gallic acid in a proportion to form a powder mixture; dispersing the above powder mixture on the surface of the fabric; at a medium temperature of 60°C to 80°C, pressing the fabric and the glass mirror to complete the preparation of the composite film. The molar content of the vinyl acetate structural unit in the used EVA resin is 20% - 30%; the rosin is a water-based rosin with a softening point of 80°C - 90°C; the proportion of gallic acid is 0.5% - 1% of the mass of EVA. The composite film prepared by the present invention has excellent anti-breaking and anti-splashing properties, significant antibacterial properties, is suitable for low-temperature processing, does not require solvents, is environmentally friendly and efficient, and is suitable for large-scale industrial production.

Description

Technical Field

[0001] The present invention relates to a fabric composite film material for protecting glass mirror products, in particular to a fabric composite film material for preventing fragments from falling off and splashing after the lens is broken and a preparation method thereof, which is applicable to enhancing the safety of glass mirrors and belongs to the field of new protective coating materials. Background Art

[0002] As a widely used material, glass occupies an important position in many fields such as home, architecture, automotive, and electronics. However, the inherent brittleness of glass makes it prone to breakage when subjected to external impact, and the fragments may cause harm to the human body or the environment. Therefore, improving the impact resistance and anti-fragmentation and anti-splashing functions of glass has become an important research direction in modern industrial design.

[0003] With the increasing market requirements for the anti-fragmentation and anti-splashing performance of glass mirrors, traditional anti-fragmentation treatment methods such as tempered glass and laminated glass are difficult to meet the needs of consumers. These traditional methods have obvious limitations. For example, although tempered glass has high mechanical strength, it still produces small fragments when broken; although laminated glass can prevent fragments from falling off, it is limited in practical applications due to its high processing difficulty and cost. To improve the anti-fragmentation and anti-splashing performance of glass materials in an economical and convenient way, Patent No. CN101724340A discloses a production method and an application method of a glass anti-fragmentation coating, in which silicone resin, silicone rubber, butyl acetate, a silicone resin curing agent or a silicone rubber curing agent are mixed, stirred, and ground at room temperature according to a weight ratio; filtered to obtain a milky white glass coating; the coating is directly sprayed on the glass, and then dried at a low temperature of 80°C to 100°C and at a high temperature of 180°C to 220°C. Patent No. CN217813112U discloses a durable laminated glass for anti-fragmentation, which avoids the phenomenon that the impact force is directly transmitted to the edge of the laminated glass, thereby greatly improving the anti-fragmentation performance of the laminated glass. Patent No. CN216675339U discloses a tempered glass anti-fragmentation protection device, which solves the problem that there is a lack of a protection mechanism to protect the tempered glass during the display process in the terminal store. However, these technologies still have problems such as complex processes, serious pollution, and poor anti-fragmentation and anti-splashing effects.

[0004] In recent years, more and more researchers have begun to focus on using composite film materials to protect glass. Composite film materials can not only effectively enhance the surface strength of glass, but also effectively prevent fragments from splashing and falling off when the glass breaks. For example, the patent with publication number CN118146437A discloses a new type of impact-resistant buffer material and its preparation method. The new type of impact-resistant buffer material based on the mixture of polymer network and ionic liquid medium is used for glass protection, microelectronic component protection, precision device protection, etc. However, the current anti-shattering and anti-splashing technology using composite film materials still faces technical challenges. For example, (1) The preparation process is complex. The existing composite film preparation processes mostly use methods such as solvent dissolution or high-temperature heating, which require a long processing time; (2) High-temperature curing process is needed. The preparation of traditional protective film materials requires high-temperature curing and a long processing time, resulting in low production efficiency; (3) Environmental pollution is generated; (4) The protective film cannot effectively prevent fragments from falling off or splashing after the lens breaks. Traditional film materials use organic solvents in the production process, causing environmental pollution. To solve the above technical problems, the present invention provides a mirror protective film material with high adhesion, anti-shattering, anti-splashing performance, and low-temperature rapid curing, and by optimizing the formula and processing technology, the production cost is reduced, the production process is simplified, and the environmental protection performance of the film is improved.

[0005] In the actual application of glass mirrors, antibacterial performance is an important technical indicator to meet the requirements of specific scenarios. In indoor environments, such as bathrooms and kitchens, the surface of glass mirrors is long-term exposed to high humidity and high temperature conditions, which is prone to bacteria growth, resulting in the deterioration of the protective film, the generation of odors or the formation of stains, affecting its beauty and service life. Therefore, the protective film for glass mirrors also needs to have good antibacterial performance. However, no bacteriostatic function has been found in the protective film materials for glass mirrors prepared by existing technologies. Summary of the Invention

[0006] In view of this, to solve the above-mentioned drawbacks existing in the prior art, the present invention provides a preparation method of a shatterproof and splash-proof fabric composite film material for mirrors with bacteriostatic function without using organic solvents and without high-temperature heating.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention uses a powder mixture of raw materials such as EVA resin, rosin, and gallic acid as the adhesive of the composite film material, replacing the traditional organic solvent-based adhesive or hot melt adhesive, thereby simplifying the production process of shatterproof and splash-proof glass mirrors. This method avoids the use of organic solvents, which not only helps to reduce environmental pollution, but also reduces the potential risk to the health of on-site operators.

[0009] The present invention uses ordinary fabrics such as polyester, cotton, and polyester-cotton blended fabrics as fiber reinforcing materials for the composite film, which can significantly improve the anti-shattering and anti-splashing properties of the glass mirror surface. Compared with the protective film prepared solely using a polymer adhesive, when using a fabric reinforcing material, only a small amount of adhesive is required for compounding to achieve a more excellent protective effect.

[0010] For hydrophobic fiber materials such as polyester fabrics and polyester-cotton blended fabrics, the present invention uses a silicon coupling reagent to treat the fiber surface to enhance its surface polarity and water absorption performance, making it similar to the characteristics of cotton fabrics. This method can significantly improve the interfacial compatibility between the fabric fibers and the adhesive, thereby effectively enhancing the strength of the composite film.

[0011] The present invention crushes raw materials such as EVA resin, rosin, and gallic acid into fine powders with an average mesh number in the range of 100 - 120 meshes. The powders with smaller particle sizes contribute to the uniform mixing of various raw materials, achieving better compatibility during the composite film formation process, and enabling the composite film to achieve a better bonding effect.

[0012] Regarding the surface characteristics of the back side of the glass mirror, the present invention preferably selects the EVA category, which not only ensures good mechanical strength, flexibility, and elasticity of the composite film but also ensures sufficient adhesive force to the mirror surface and fabric fibers.

[0013] The present invention selects water-based rosin as a tackifier and screens rosin varieties with appropriate softening points to ensure compatibility with the above-mentioned preferred EVA varieties, exerting an excellent tackifying effect, effectively reducing the production temperature, shortening the heating time, and reducing energy consumption.

[0014] The present invention selects gallic acid as the main antibacterial component to effectively inhibit the reproduction of microorganisms in a humid environment, ensuring the long-term stable use of the composite film material in a warm and humid environment.

[0015] Preferably, the preparation method of the anti-shattering and anti-splashing fabric composite film material includes the following steps:

[0016] Crush raw materials such as EVA resin, rosin, and gallic acid into powders with appropriate mesh numbers;

[0017] Use a V-type powder mixer to mix the above raw material powders in appropriate proportions;

[0018] Treat the surface of the fabric fibers with a fabric surface finishing agent to regulate the surface polarity and moisture of the fibers;

[0019] Use a powder spraying device to appropriately disperse the above powder mixture on the fabric and the back side of the glass mirror;

[0020] At a medium temperature of 60°C - 80°C, press the fabric and the mirror surface together to complete the preparation of the composite film formation and achieve the anti-shattering and anti-splashing functions.

[0021] Preferably, the content range of vinyl acetate (VA) in the EVA resin is 20% to 30%.

[0022] Preferably, the rosin is water-based rosin, and its softening point range is 80°C to 90°C.

[0023] Preferably, the appropriate mesh number of the powder is 100 mesh to 120 mesh.

[0024] Preferably, the mixing ratio range of the EVA to the rosin is 3:1 to 1:1, and the best mixing ratio is 2:1.

[0025] Preferably, the fabric surface finishing method for adjusting the surface polarity of polyester fabrics includes the following steps:

[0026] First, use a 1% mass concentration solution of silane coupling agent (KH-550) to impregnate and treat the polyester fabric at 50°C to 60°C for 30 minutes to 60 minutes.

[0027] Second, air-dry the fabric at 110°C to 120°C for 30 minutes to 60 minutes to ensure that the surface of the polyester fabric reacts with the silane coupling agent and enhance the adhesion between the film and the substrate.

[0028] The improvements and principles of the present invention are specifically as follows:

[0029] The present invention uses a powder mixture as the adhesive of the composite film material, avoiding the use of organic solvents (such as acetone), reducing environmental pollution, and reducing the potential risk to the health of on-site operators.

[0030] The present invention selects ordinary fabric as the fiber reinforcement material, significantly improving the protection effect on the glass mirror surface.

[0031] The present invention preferably uses fine powder raw materials, which helps to uniformly mix various raw materials and achieve a better composite effect.

[0032] In view of the surface characteristics of the back side of the glass mirror, the present invention preferably selects the EVA category, the tackifier category, and the mixing ratio of the mixed powder components, significantly improving the composite flexibility and elasticity, and ensuring that the composite interface has sufficient adhesion.

[0033] The present invention can complete the forming process of the composite film at a medium temperature of 60°C to 80°C in a short time of less than 1 minute, simplifying the production process, reducing energy consumption, and improving production efficiency.

[0034] The composite film product of the present invention can generate a strong adhesion force of not less than 3 N / cm. After a 500-gram stainless steel ball freely falls from a height of 1 meter and causes the mirror surface to break, no fragments with a diameter greater than 1 cm fall off, the amount of detached matrix glass debris is not higher than 2% of the mass of the glass mirror body, and the antibacterial rates of the composite film against Escherichia coli and Staphylococcus aureus are not less than 95%.

[0035] In summary, the beneficial effects of the present invention are as follows: (1) The process is simple and the production efficiency is high; (2) Prepared by a solvent-free method, reducing the impact on the environment and health; (3) Cured at medium temperature for a short time, it can be processed by heating at 80°C for 30 seconds, significantly improving the production efficiency; (4) Antibacterial and bacteriostatic, improving the durability of the film material; (5) The anti-shattering and anti-splashing effects are significantly better than the prior art.

[0036] In the present invention, the content of vinyl acetate in the EVA resin preferably has an important influence on the flexibility and adhesion of the composite film. If the content of vinyl acetate is too small, the adhesion of the adhesive film to the polar interface is insufficient; if the content of vinyl acetate is too high, the mechanical strength of the adhesive film is weakened. In view of the surface characteristics of the back side of the glass mirror, the present invention preferably selects the EVA category and uses an EVA variety with a vinyl acetate content range of 20% to 30% to ensure good mechanical strength, flexibility, and bonding strength to the fabric and the mirror surface of the composite film.

[0037] The present invention uses water-based rosin as a tackifier and selects a rosin variety with a softening point range of 80°C to 90°C, which can be compatibly combined with the above-mentioned preferred EVA, achieving a more excellent tackifying effect, and at the same time can significantly reduce the production temperature, shorten the heating time, and reduce energy consumption.

[0038] The average mesh number parameters of rosin and EVA powder in the mixed powder directly affect the film-forming performance of the composite film. If the particle size is too large, the surface of the film may be uneven, affecting the adhesion between the film and the substrate; if the particle size is too small, the anti-shattering effect may be affected. The present invention selects a powder mixing mesh number of 100 to 120 mesh, and through experimental verification, a smooth adhesive film and strong adhesion can be formed.

[0039] The present invention selects gallic acid as the main antibacterial component. Gallic acid can be mixed with main powders such as EVA and rosin, and has good compatibility after heating and melting, which can endow the composite film with excellent antibacterial effects.

[0040] The present invention uses a combination of EVA resin and rosin powder. After optimizing its ratio and particle size, it can be cured in a short time (30 seconds) under medium temperature conditions (below 80°C). The on-site preparation production process is simple, high-temperature heating can be avoided, energy consumption can be saved, and production efficiency can be improved. Detailed implementation manners

[0041] The following combines specific embodiments to clearly and detailedly describe the technical solutions of the present invention.

[0042] Example 1

[0043] First, immerse the polyester fabric in a 0.5% concentration solution of silane coupling agent (KH-550) and treat it at 60°C for 45 minutes; then air-dry it at 110°C for 60 minutes. Next, screen the rosin (softening point 90°C) powder and EVA (VA content 20%) powder through a 100-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 1 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure full mixing of the three materials. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage at 1.5 ± 0.3 g / cm 2 . Then, apply pressure at 80°C for 20 seconds using a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-shattering and anti-spattering effects, and antibacterial properties of the composite film material.

[0044] The test results of the product performance are characterized as follows: the transverse peeling force between the mirror and the fabric is 5.4 N / cm, and the longitudinal peeling force between the mirror and the fabric is 5.8 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, no fragments with a diameter greater than 1 cm fall off after the mirror breaks, and the mass ratio of the detached debris is 0.9%. The antibacterial rate of the composite film against Escherichia coli reaches 99%, and the antibacterial rate against Staphylococcus aureus reaches 99%.

[0045] Example 2

[0046] First, immerse the polyester fabric in a 2% concentration dispersion of fumed silica, adjust the pH in the range of 4 - 6, and treat it at 90°C for 15 minutes; air-dry it at 120°C for 30 minutes. Next, screen the rosin (softening point 80°C) powder and EVA (VA content 30%) powder through a 120-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 0.5 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure full mixing of the three materials. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage at 1.8 ± 0.3 g / cm 2 . Then, apply pressure at 70°C for 25 seconds using a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-shattering and anti-spattering effects, and antibacterial properties of the composite film material.

[0047] The test results of the product performance are characterized as follows: the transverse peeling force between the mirror and the fabric is 5.0 N / cm, and the longitudinal peeling force between the mirror and the fabric is 4.9 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, no fragments with a diameter greater than 1 cm fall off after the mirror breaks, and the mass ratio of the detached debris is 1.0%. The antibacterial rate of the composite film against Escherichia coli reaches 96%, and the antibacterial rate against Staphylococcus aureus reaches 97%.

[0048] Example 3

[0049] First, immerse the polyester fabric in a 0.5% concentration solution of silane coupling agent (KH-550) and treat it at 60 °C for 45 minutes; then air-dry it at 110 °C for 60 minutes. Next, screen the rosin (softening point 80 °C) powder and EVA (VA content 20%) powder through a 100-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 1 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage to be 1.5 ± 0.3 g / cm 2 . Then, apply pressure at 80 °C for 20 seconds through a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-splashing effects, and antibacterial properties of the composite film material.

[0050] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 5.7 N / cm, and the longitudinal peeling force between the mirror and the fabric is 6.0 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror surface breaks, there are no fragments with a diameter greater than 1 cm falling off, and the mass ratio of the detached debris is 0.8%. The antibacterial rate of the composite film against Escherichia coli reaches 99%, and the antibacterial rate against Staphylococcus aureus reaches 99%.

[0051] Example 4

[0052] First, immerse the polyester fabric in a 0.8% concentration solution of silane coupling agent (KH-550) and treat it at 60 °C for 45 minutes; then air-dry it at 110 °C for 60 minutes. Next, screen the rosin (softening point 90 °C) powder and EVA (VA content 30%) powder through a 120-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 1 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage to be 1.5 ± 0.3 g / cm 2 . Then, apply pressure at 80 °C for 25 seconds through a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-splashing effects, and antibacterial properties of the composite film material.

[0053] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 6.0 N / cm, and the longitudinal peeling force between the mirror and the fabric is 6.4 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror surface breaks, there are no fragments with a diameter greater than 1 cm falling off, and the mass ratio of the detached debris is 0.6%. The antibacterial rate of the composite film against Escherichia coli reaches 99%, and the antibacterial rate against Staphylococcus aureus reaches 99%.

[0054] Example 5

[0055] First, soak the polyester fabric in a 0.8% concentration solution of silane coupling agent (KH-550) and treat it at 60°C for 45 minutes; then air-dry it at 110°C for 60 minutes. Next, screen the rosin (softening point 80°C) powder and EVA (VA content 20%) powder through a 100-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 1 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the amount of the colloid to be 1.5 ± 0.3 g / cm 2 . Then, apply pressure at 80°C for 20 seconds using a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-shattering and anti-splashing effects, and antibacterial properties of the composite film material.

[0056] The test results of the product performance are characterized as follows: the transverse peeling force between the mirror and the fabric is 5.8 N / cm, and the longitudinal peeling force between the mirror and the fabric is 6.0 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror surface is broken, there are no fragments with a diameter greater than 1 cm falling off, and the mass ratio of the detached debris is 0.7%. The antibacterial rate of the composite film against Escherichia coli reaches 96%, and the antibacterial rate against Staphylococcus aureus reaches 96%.

[0057] Example 6

[0058] First, soak the polyester fabric in a 0.5% concentration solution of silane coupling agent (KH-550) and treat it at 60°C for 45 minutes; then air-dry it at 110°C for 60 minutes. Next, screen the rosin (softening point 90°C) powder and EVA (VA content 30%) powder through a 120-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 0.5 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the amount of the colloid to be 1.5 ± 0.3 g / cm 2 . Then, apply pressure at 70°C for 30 seconds using a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-shattering and anti-splashing effects, and antibacterial properties of the composite film material.

[0059] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 6.1 N / cm, and the longitudinal peeling force between the mirror and the fabric is 6.4 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror surface is broken, there are no fragments with a diameter greater than 1 cm falling off, the mass ratio of the detached debris is 0.4%, the antibacterial rate of the composite film against Escherichia coli reaches 95%, and the antibacterial rate against Staphylococcus aureus reaches 95%.

[0060] Example 7

[0061] First, soak the polyester fabric in a 0.8% concentration solution of silane coupling agent (KH-550) and treat it at 60 °C for 45 minutes; then air-dry it at 110 °C for 60 minutes. Next, screen the rosin (softening point 90 °C) powder and EVA (VA content 20%) powder through a 100-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 1 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage to be 2.0 ± 0.3 g / cm 2 . Then, apply pressure at 60 °C for 30 seconds through a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-splash effects, and antibacterial properties of the composite film material.

[0062] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 4.9 N / cm, and the longitudinal peeling force between the mirror and the fabric is 4.6 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror surface is broken, there are no fragments with a diameter greater than 1 cm falling off, the mass ratio of the detached debris is 1.1%, the antibacterial rate of the composite film against Escherichia coli reaches 96%, and the antibacterial rate against Staphylococcus aureus reaches 97%.

[0063] Example 8

[0064] Screen the rosin (softening point 80 °C) powder and EVA (VA content 20%) powder through a 100-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 1 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the pure cotton fabric, controlling the colloid dosage to be 1.0 ± 0.3 g / cm 2 . Then, apply pressure at 80 °C for 20 seconds through a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-splash effects, and antibacterial properties of the composite film material.

[0065] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 4.5 N / cm, and the longitudinal peeling force between the mirror and the fabric is 4.7 N / cm. A 500-gram stainless steel ball is freely dropped from a height of 1 meter. After the mirror surface is broken, there are no fragments with a diameter greater than 1 cm falling off, and the mass ratio of the detached debris is 1.2%. The antibacterial rate of the composite film against Escherichia coli reaches 97%, and the antibacterial rate against Staphylococcus aureus reaches 95%.

[0066] Example 9

[0067] First, soak the polyester-cotton fabric in a 1% concentration solution of silane coupling agent (KH-550) and treat it at 60°C for 45 minutes; then air-dry it at 110°C for 60 minutes. Next, screen the rosin (softening point 90°C) powder and EVA (VA content 20%) powder through a 120-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 1 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage to be 1.5 ± 0.3 g / cm 2 。 Then, apply pressure at 80°C for 20 seconds through a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-spray effects, and antibacterial properties of the composite film material.

[0068] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 4.9 N / cm, and the longitudinal peeling force between the mirror and the fabric is 4.8 N / cm. A 500-gram stainless steel ball is freely dropped from a height of 1 meter. After the mirror surface is broken, there are no fragments with a diameter greater than 1 cm falling off, and the mass ratio of the detached debris is 1.1%. The antibacterial rate of the composite film against Escherichia coli reaches 95%, and the antibacterial rate against Staphylococcus aureus reaches 96%.

[0069] Example 10

[0070] Screen the rosin (softening point 80°C) powder and EVA (VA content 30%) powder through a 120-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 0.5 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the pure cotton fabric, controlling the colloid dosage to be 1.5 ± 0.3 g / cm 2 。 Then, apply pressure at 70°C for 30 seconds through a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-spray effects, and antibacterial properties of the composite film material.

[0071] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 5.2 N / cm, and the longitudinal peeling force between the mirror and the fabric is 5.4 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror surface is broken, there are no fragments with a diameter greater than 1 cm falling off, the mass ratio of the detached debris is 0.8%, the antibacterial rate of the composite film against Escherichia coli reaches 95%, and the antibacterial rate against Staphylococcus aureus reaches 96%.

[0072] Example 11

[0073] First, soak the polyester-cotton fabric in a 0.5% concentration solution of silane coupling agent (KH-550) and treat it at 60 °C for 45 minutes; then dry it at 110 °C for 60 minutes. Next, screen the rosin (softening point 90 °C) powder and EVA (VA content 30%) powder through a 100-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:2, add 0.5 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage to be 1.5 ± 0.3 g / cm 2 Then, apply pressure at 70 °C for 30 seconds through a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-splash effects, and antibacterial properties of the composite film material.

[0074] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 5.6 N / cm, and the longitudinal peeling force between the mirror and the fabric is 5.1 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror surface is broken, there are no fragments with a diameter greater than 1 cm falling off, the mass ratio of the detached debris is 0.6%, the antibacterial rate of the composite film against Escherichia coli reaches 96%, and the antibacterial rate against Staphylococcus aureus reaches 97%.

[0075] Comparative Example 12

[0076] First, soak the polyester fabric in a 1% concentration solution of silane coupling agent (KH-550) and treat it at 60 °C for 45 minutes; then dry it at 110 °C for 60 minutes. Next, screen the rosin (softening point 120 °C) powder and EVA (VA content 10%) powder through an 80-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:1, add 0.5 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage to be 2.0 ± 0.3 g / cm 2 Then, apply pressure at 70 °C for 30 seconds through a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-splash effects, and antibacterial properties of the composite film material.

[0077] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 2.5 N / cm, and the longitudinal peeling force between the mirror and the fabric is 3.0 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror breaks, no fragments with a diameter greater than 1 cm fall off, the mass ratio of the detached debris is 1.8%, the antibacterial rate of the composite film against Escherichia coli reaches 95%, and the antibacterial rate against Staphylococcus aureus reaches 96%.

[0078] Comparative Example 13

[0079] First, soak the polyester fabric in a 1% concentration solution of silane coupling agent (KH-550) and treat it at 60 °C for 45 minutes; then dry it at 110 °C for 60 minutes. Next, screen the rosin (softening point 100 °C) powder and EVA (VA content 40%) powder through a 150-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:3, add 1 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Adjust the particle size (120 µm) of the rosin and EVA powders and sieve them. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage at 1.0 ± 0.3 g / cm 2 . Then, apply pressure at 60 °C for 20 seconds through a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-splash effects, and antibacterial properties of the composite film material.

[0080] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 3.2 N / cm, and the longitudinal peeling force between the mirror and the fabric is 3.4 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror breaks, no fragments with a diameter greater than 1 cm fall off, the mass ratio of the detached debris is 1.6%, the antibacterial rate of the composite film against Escherichia coli reaches 99%, and the antibacterial rate against Staphylococcus aureus reaches 99%.

[0081] Comparative Example 14

[0082] First, soak the polyester fabric in a 0.8% concentration solution of silane coupling agent (KH-550) and treat it at 60 °C for 45 minutes; then dry it at 110 °C for 60 minutes. Next, screen the rosin (softening point 80 °C) powder and EVA (VA content 10%) powder through a 120-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:1, add 0.5 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage at 2.0 ± 0.3 g / cm 2Then, apply pressure at 70 °C for 20 seconds using a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-shattering and anti-splashing effects, and antibacterial properties of the composite film material.

[0083] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 2.4 N / cm, and the longitudinal peeling force between the mirror and the fabric is 2.7 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, no fragments larger than 1 cm in diameter fall off after the mirror surface breaks, the mass ratio of the detached debris is 1.9%, the antibacterial rate of the composite film against Escherichia coli reaches 95%, and the antibacterial rate against Staphylococcus aureus reaches 95%.

[0084] Comparative Example 15

[0085] First, soak the polyester cloth in a 1% concentration solution of silane coupling agent (KH-550) and treat it at 60 °C for 45 minutes; then air-dry it at 110 °C for 60 minutes. Next, screen the rosin (softening point 100 °C) powder and EVA (VA content 40%) powder through a 150-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:1, add 0.5 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester cloth, controlling the colloid dosage to be 2.0 ± 0.3 g / cm 2 Then, apply pressure at 70 °C for 20 seconds using a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-shattering and anti-splashing effects, and antibacterial properties of the composite film material.

[0086] The product performance test results are characterized as follows: the transverse peeling force between the mirror and the fabric is 3.6 N / cm, and the longitudinal peeling force between the mirror and the fabric is 3.8 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, no fragments larger than 1 cm in diameter fall off after the mirror surface breaks, the mass ratio of the detached debris is 1.4%, the antibacterial rate of the composite film against Escherichia coli reaches 96%, and the antibacterial rate against Staphylococcus aureus reaches 95%.

[0087] Comparative Example 16

[0088] First, immerse the polyester fabric in a 0.5% concentration solution of silane coupling agent (KH-550) and treat it at 60°C for 45 minutes; then air-dry it at 110°C for 60 minutes. Next, screen the rosin (softening point 100°C) powder and EVA (VA content 10%) powder through a 150-mesh sieve, mix the screened rosin and EVA in a mass ratio of 1:1, add 0.5 wt% gallic acid (calculated based on the mass of EVA), and use a powder homogenizer to stir evenly to ensure that the three materials are fully mixed. Coat the mixed powder evenly on the surface of the polyester fabric, controlling the colloid dosage to 1.0 ± 0.3 g / cm 2 . Then, apply pressure at 60°C for 30 seconds using a hot press to ensure that the composite film is flat and tightly bonded to the substrate. After curing, measure the adhesion, anti-fragmentation and anti-spattering effects, and antibacterial properties of the composite film material.

[0089] The test results of the product performance are characterized as follows: the transverse peeling force between the mirror and the fabric is 3.9 N / cm, and the longitudinal peeling force between the mirror and the fabric is 3.4 N / cm. When a 500-gram stainless steel ball is freely dropped from a height of 1 meter, after the mirror surface is broken, there are no fragments with a diameter greater than 1 cm falling off, and the mass ratio of the detached debris is 1.6%. The antibacterial rate of the composite film against Escherichia coli reaches 95%, and the antibacterial rate against Staphylococcus aureus reaches 95%.

[0090] The summary of the above examples and comparative examples is as follows:

[0091]

[0092] Table 1. Anti-fragmentation and anti-spattering fabric composite film material for mirrors and its preparation conditions.

[0093]

[0094] Table 2. Results of product performance characterization.

Claims

1. A solvent-free preparation method of a glass mirror anti-shatter and splash-proof fabric composite membrane material, characterized in that: The steps include: (1) Grinding EVA resin and rosin into powders with an average particle size, and mixing them with gallic acid in a certain proportion to form a powder mixture; (2) dispersing the powder mixture on the surface of the fabric; (3) Pressing the fabric and the glass mirror at a medium temperature of 60°C to 80°C to complete the preparation of the composite film; The molar content of vinyl acetate structural units in the EVA resin is 20% to 30%; The rosin is water-based rosin, and its softening point ranges from 80°C to 90°C; The average powder mesh number of the powder is 100 mesh to 120 mesh.

2. The method for preparing the glass mirror anti-shattering and splash-proof fabric composite membrane material according to claim 1, characterized in that: The proportion of raw material components is calculated based on the mass of EVA being 100, the mass range of rosin is 33~100, and the mass range of gallic acid is 0.5~1.

3. The method for preparing the glass mirror anti-shattering and splash-proof fabric composite membrane material according to claim 1, characterized in that: The fabric is cotton fabric, polyester-cotton blended fabric, or polyester fabric.

4. The method for preparing the glass mirror anti-shattering and splash-proof fabric composite membrane material according to claim 1, characterized in that: The fabric is a polyester fabric pretreated with a silicon coupling agent, and the fabric surface finishing method comprises the following steps: first, using an ethanol solution of a silane coupling agent with a mass concentration of 1%, immersing the polyester fabric at 50° C. to 60° C. for 30 minutes to 60 minutes; second, air-drying the fabric at 110° C. to 120° C. for 30 minutes to 60 minutes.

5. The method for preparing the glass mirror anti-shattering and splash-proof fabric composite membrane material according to claim 1, characterized in that: The powder mixture is used in an amount of 1.5 to 2.0 g / cm 2 .

6. The method for preparing the glass mirror anti-shattering and splash-proof fabric composite membrane material according to claim 1, characterized in that: The pressing time is 20 to 30 seconds.

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