CN112080094A - Anti-adhesion PVB film - Google Patents
Anti-adhesion PVB film Download PDFInfo
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- CN112080094A CN112080094A CN202010839106.6A CN202010839106A CN112080094A CN 112080094 A CN112080094 A CN 112080094A CN 202010839106 A CN202010839106 A CN 202010839106A CN 112080094 A CN112080094 A CN 112080094A
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
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- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K5/00—Use of organic ingredients
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Abstract
The invention discloses an anti-adhesion PVB film which comprises the following components in parts by weight: 60-85 parts of PVB resin powder; 3-8 parts of a plasticizer; 1-5 parts of a silicon-aluminum film opening agent; 10-30 parts of water. The silicon-aluminum film opening agent provided by the invention can be uniformly dispersed in PVB resin, and by adding aluminum species, on one hand, the bulk ratio of the obtained opening agent can be regulated, and simultaneously, the surface defects of opening agent particles are increased, so that the opening agent particles and an organosilane dispersing agent have better combination, the affinity degree of the obtained opening agent particles and the film resin is improved, the antistatic property, the lubricating property and the moisture-proof property of the opening agent particles are improved, the friction coefficient and the bonding resistance are reduced, a better opening effect is achieved, the adhesion between the surfaces of the films is reduced under the condition that the adhesion between the films and glass is not influenced, and the storage and the transportation of the films are facilitated.
Description
Technical Field
The invention relates to the technical field of macromolecules, in particular to an anti-adhesion PVB film.
Background
PVB is a shorthand for polyvinyl butyral, a polymeric resin material, known by the chinese name polyvinyl butyral. The PVB film is generally formed by thermoplastic extrusion using an extruder, using PVB resin powder and a plasticizer as main raw materials. The PVB film is widely used in the fields of automobile laminated glass, building laminated glass, photovoltaic double-glass laminated assemblies and the like. The current PVB films on the market are divided into a single-layer PVB film, a three-layer PVB film, a multi-layer PVB film, a PET film composite PVB film, a PU film composite PVB film and the like according to the structure; the film is divided into a sound-proof PVB film, a heat-proof PVB film, a sound-proof heat-proof PVB film, a PVB film with a sun-shading color band, a PVB film for HUD (head up display), a fireproof PVB film, a PVB film for photochromic glass, a PVB film for light-adjusting glass, a conductive PVB film, a proton-conducting PVB film, an electronic display PVB film, a bulletproof PVB film and the like according to functions; the method comprises the following steps of (1) classifying the film into an automobile-grade PVB film, a building-grade PVB film, a photovoltaic-grade PVB film and the like according to users; the film is divided into a wedge-shaped PVB film with gradually changed upper and lower film thicknesses, a rectangular PVB film with the same upper and lower film thicknesses and the like according to the shape; the thickness of the PVB film is usually 0.38-1.52 mm, and the width of the film is usually 400-5000 mm.
Heretofore, when all of the above-mentioned PVB films are produced, stored, transported and used in an environment of greater than 10 ℃, whether in a multi-layer stacked form or a multi-layer wound roll form, a release film (also called release paper) must be sandwiched between each two layers of PVB films as a backing layer, otherwise the PVB films are difficult to separate due to adhesion between the surfaces, and when separated by a strong force, the films are deformed and the light distortion of the laminated glass of the product is caused. Therefore, the isolating film becomes a standard article for protecting the PVB film and is widely used by related manufacturers at home and abroad. However, the barrier film also brings many troubles to people, for example, in the winding process of producing the PVB film, the PVB film and the barrier film are cut edge on line, and the scraps generated when the barrier film is cut edge are often adsorbed on the surface of the PVB to cause pollution; in the unwinding working section using the PVB film, the static electricity accumulated on the surface of the PVB film can adsorb dust in the environment due to the removal of the isolating film, so that the pollution of the PVB film and the reduction of the optical quality of the laminated glass are caused.
In addition, after the PVB film is used up, the barrier film becomes a waste that is difficult to dispose of. Because the release film is usually a disposable product and is easy to break, the release film is difficult to become a protective film of a new PVB film, and the old release film can be reused after being returned to a factory and secondarily extruded by a professional casting machine to form a film. But the isolating membrane is fluffy, large in volume and light in weight, so that the long-distance transportation is not cost-effective for returning to a factory and returning to a furnace. Finally, many manufacturers can discard the isolation film directly as garbage after using up the PVB film, which not only causes material waste, but also seriously pollutes the environment. The isolating membrane is mostly made of Polyethylene (PE) or Chlorinated Polyethylene (CPE), and can be naturally degraded only for at least several decades or even hundreds of years, and the waste isolating membrane becomes one of the white pollutants which are extremely harmful to the natural environment at present.
Currently, a variety of antiblocking materials have been incorporated into PVB film to impart antiblocking properties, including montanic acid esters, ethylene or propylene glycol C1 to C25 alkyl ethers, diethylene glycol dodecyl ether, and tripropylene glycol dodecyl ether, among others, however, incorporation of such antiblocking materials into PVB can affect the optical properties of the resulting laminate or the adhesion of the PVB sheet to glass.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an anti-blocking PVB film, which reduces the adhesion between the film surface and the glass surface by introducing a silicon-aluminum film opening agent under the condition of not influencing the adhesion with the glass, and is convenient for storage and transportation.
The invention is realized by adopting the following technical scheme:
an anti-adhesion PVB film comprises the following components in parts by weight:
60-85 parts of PVB resin powder;
3-8 parts of a plasticizer;
1-5 parts of a silicon-aluminum film opening agent;
10-30 parts of water.
Further, the composition comprises the following components in parts by weight:
60-70 parts of PVB resin powder;
3-8 parts of a plasticizer;
1-3 parts of a silicon-aluminum film opening agent;
20-30 parts of water.
Further, the silicon-aluminum film opening agent is prepared by the following steps:
s1: preparing a water glass solution with the silicon dioxide concentration of 10-20 wt% and the modulus of 3.35 for later use;
s2: adding water and aluminum salt into a reaction kettle at the temperature of 30-60 ℃, adding 10-30 wt% sulfuric acid after the aluminum salt is completely dissolved, and adjusting the pH value to 1-3;
s3: simultaneously adding the prepared water glass solution and sulfuric acid into an aluminum salt solution, wherein the parallel flow time is 30-60 min, and the pH value of the system is kept at 1-3;
s4: after the parallel flow is finished, adding sodium hydroxide, adjusting the pH value to 8-10, simultaneously heating to 80-100 ℃, and aging for 2h at the temperature;
s5: after the aging is finished, adding dilute sulfuric acid, adjusting the pH value to 2-4, aging for 0.5-1.5 h, cooling to 60-70 ℃, and filtering to obtain a filter cake;
s6: sequentially washing the filter cake with 1-3 wt% sulfuric acid and water, re-dispersing the washed filter cake in a small amount of water, adding 1-3% of solid content organosilane dispersing agent, and uniformly dispersing to obtain slurry;
s7: spray drying the slurry, and then crushing by air flow to obtain the silicon-aluminum film opening agent with the grain size of 3-7 mu m.
Further, the aluminum salt solution is one or more of aluminum sulfate solution, aluminum nitrate solution and aluminum chloride solution.
Further, the molar ratio of aluminum in the aluminum salt solution to silicon in the water glass is 0.05-0.30: 1.
further, the organosilane dispersing agent is one or more of KH-550, KH-104 and KH-910.
Further, the mass ratio of the silicon-aluminum film opening agent to the PVB resin powder to water is 1: 10-19: 2-6.
Further, the plasticizer is one or a combination of more of diethylene glycol dibenzoate, dibutyl phthalate and dioctyl phthalate.
Further, the anti-blocking PVB film also comprises the following components in parts by weight: 0.1-1 part of flame retardant; 0.1-1 part of antistatic agent.
Further, the flame retardant is a flame retardant DDP; the antistatic agent is trihydroxyethyl methyl quaternary ammonium methyl sulfate.
Compared with the prior art, the invention has the beneficial effects that:
the silicon-aluminum film opening agent provided by the invention can be uniformly dispersed in PVB resin, and by adding aluminum species, on one hand, the bulk ratio of the obtained opening agent can be regulated, and simultaneously, the surface defects of opening agent particles are increased, so that the opening agent particles and an organosilane dispersing agent have better combination, the affinity degree of the obtained opening agent particles and the film resin is improved, the antistatic property, the lubricating property and the moisture-proof property of the opening agent particles are improved, the friction coefficient and the bonding resistance are reduced, a better opening effect is achieved, the adhesion between the surfaces of the films is reduced under the condition that the adhesion between the films and glass is not influenced, and the storage and the transportation of the films are facilitated.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
The invention provides an anti-adhesion PVB film which comprises the following components in parts by weight:
60-85 parts of PVB resin powder; 3-8 parts of a plasticizer; 1-5 parts of a silicon-aluminum film opening agent; 10-30 parts of water.
By adding aluminum species into the silicon-aluminum film opening agent, on one hand, the bulk ratio of the obtained opening agent can be regulated, and simultaneously, the surface defects of opening agent particles are increased, so that the opening agent particles are better combined with an organosilane dispersing agent, the affinity degree of the obtained opening agent particles and film resin is improved, the antistatic property, the lubricating property and the moisture-proof property of the opening agent particles are improved, the friction coefficient and the bonding resistance are reduced, a better opening effect is achieved, the adhesion between the film surface and the film surface is reduced under the condition that the adhesion between the film surface and glass is not influenced, and the storage and the transportation of the film surface and the glass are facilitated.
The plasticizer in the following specific embodiment is prepared from diethylene glycol dibenzoate, dibutyl phthalate and dioctyl phthalate in a mass ratio of 3: 1: 1, raw materials, equipments and the like used in the following examples are commercially available unless otherwise specified.
Example 1:
an anti-adhesion PVB film comprises the following components in parts by weight: 60 parts of PVB resin powder; 4 parts of a plasticizer; 3 parts of a silicon-aluminum film opening agent; and 20 parts of water.
The silicon-aluminum film opening agent is prepared by the following method:
50L of bottom water and 45 moles of aluminum sulfate are injected into a stirring reaction vessel at the temperature of 30 ℃, after the aluminum sulfate is completely dissolved, 30 wt% of sulfuric acid is added to adjust the pH value of the system to be 2, 20 wt% of sodium silicate 75L and 30 wt% of sulfuric acid are added in a concurrent flow manner, the pH value of the system is kept to be 2, and the concurrent flow time is 30 minutes.
After the completion of the parallel flow, the temperature was adjusted to 90 ℃, the pH was adjusted to 9 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to 3, aging for 0.5 hour, then cooling to 60 ℃, and filtering to obtain a filter cake. Washing the filter cake with 1 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and 3% solids content of organosilane dispersant KH550 was added. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physical and chemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in a table I:
watch 1
Example 2:
an anti-adhesion PVB film comprises the following components in parts by weight: 60 parts of PVB resin powder; 4 parts of a plasticizer; 3 parts of a silicon-aluminum film opening agent; and 20 parts of water.
The silicon-aluminum film opening agent is prepared by the following method:
50L of bottom water and 15 moles of aluminum nitrate are injected into a stirring reaction vessel at the temperature of 60 ℃, after the aluminum nitrate is completely dissolved, 10 wt% of sulfuric acid is added to adjust the pH value of the system to be 2, 75L of water glass with the concentration of 20 wt% and 10 wt% of sulfuric acid are added in a concurrent mode, the pH value of the system is kept to be 2, and the concurrent flow time is 90 minutes. After the completion of the parallel flow, the temperature was adjusted to 100 ℃, the pH was adjusted to 10 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to 2, aging for 1.5 hours, then cooling to 60 ℃, and filtering to obtain a filter cake. Washing the filter cake with 3 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and the organosilane dispersant KH550 was added at 1% solids content. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the table II:
watch two
Example 3:
an anti-adhesion PVB film comprises the following components in parts by weight: 60 parts of PVB resin powder; 4 parts of a plasticizer; 3 parts of a silicon-aluminum film opening agent; and 20 parts of water.
The silicon-aluminum film opening agent is prepared by the following method:
50L of bottom water and 30 moles of aluminum chloride are injected into a stirring reaction vessel at the temperature of 40 ℃, sulfuric acid with the concentration of 30 wt% is added after the aluminum chloride is completely dissolved to adjust the pH value of the system to be 2, 75L of water glass with the concentration of 10 wt% and 30 wt% of sulfuric acid are added in a concurrent mode, the pH value of the system is kept to be 2, and the concurrent flow time is 60 minutes. After the completion of the parallel flow, the temperature was adjusted to 80 ℃, the pH was adjusted to 8 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to be 4, aging for 1 hour, then cooling to 70 ℃, and filtering to obtain a filter cake. Washing the filter cake with 1 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and the organosilane dispersant KH104 was added at 2% solids content. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the third table:
watch III
Example 4:
an anti-adhesion PVB film comprises the following components in parts by weight: 60 parts of PVB resin powder; 4 parts of a plasticizer; 3 parts of a silicon-aluminum film opening agent; and 20 parts of water.
The silicon-aluminum film opening agent is prepared by the following method:
50L of bottom water and 15 moles of aluminum sulfate are injected into a stirring reaction vessel at the temperature of 30 ℃, after the aluminum sulfate is completely dissolved, 30 wt% of sulfuric acid is added to adjust the pH value of the system to be 2, 20 wt% of sodium silicate 75L and 30 wt% of sulfuric acid are added in a concurrent flow manner, the pH value of the system is kept to be 2, and the concurrent flow time is 30 minutes. After the completion of the parallel flow, the temperature was adjusted to 90 ℃, the pH was adjusted to 9 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to 3, aging for 0.5 hour, then cooling to 60 ℃, and filtering to obtain a filter cake. Washing the filter cake with 1 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and 2% solids content of organosilane dispersant KH910 was added. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the fourth table:
watch four
Example 5:
an anti-adhesion PVB film comprises the following components in parts by weight: 60 parts of PVB resin powder; 4 parts of a plasticizer; 3 parts of a silicon-aluminum film opening agent; and 20 parts of water.
The silicon-aluminum film opening agent is prepared by the following method:
under the condition of 30 ℃ of temperature, 50L of bottom water and 30 moles of aluminum sulfate are injected into a stirring reaction vessel, after the aluminum sulfate is completely dissolved, 30 wt% of sulfuric acid is added to adjust the pH value of the system to be 2, 20 wt% of sodium silicate 75L and 30 wt% of sulfuric acid are added in a concurrent flow mode, the pH value of the system is kept to be 2, and the concurrent flow time is 30 minutes. After the completion of the parallel flow, the temperature was adjusted to 90 ℃, the pH was adjusted to 9 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to 3, aging for 0.5 hour, then cooling to 60 ℃, and filtering to obtain a filter cake. Washing the filter cake with 1 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and 2% solids content of the organosilane dispersant KH550 was added. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the table five:
watch five
In the above embodiments, each material is not limited to the above components, and each material may also be composed of other single components or multiple components described in the present invention, and the component parts of each material are not limited to the above parts, and the component parts of each material may also be a combination of other component parts described in the present invention, and are not described herein again.
Comparative example 1
An anti-adhesion PVB film comprises the following components in parts by weight: 60 parts of PVB resin powder; 4 parts of a plasticizer; 3 parts of a silicon-aluminum film opening agent; and 20 parts of water.
The operation of the silicon-aluminum film opening agent was the same as in example 1 except that no aluminum salt was added. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the sixth table:
watch six
Comparative example 2
An anti-adhesion PVB film comprises the following components in parts by weight: 60 parts of PVB resin powder; 4 parts of a plasticizer; and 20 parts of water.
Comparative example 3
An anti-adhesion PVB film comprises the following components in parts by weight: 60 parts of PVB resin powder; 4 parts of a plasticizer; 3 parts of butanediol montanic acid ester; and 20 parts of water.
Performance testing and Effect evaluation
The PVB films obtained in examples 1-5 and comparative examples 1-3 were tested for their impact tack and blocking properties.
The test method comprises the following steps:
1. strikeviscosity
Two-ply glass laminate samples were prepared under standard autoclave lamination conditions. The laminate was cooled to 0 ℃ and manually struck with a hammer to break the glass. All cullet that did not adhere to the PVB sheet was then removed and the amount of glass remaining adhered to the PVB sheet was compared visually with a set of standards. This standard is used to measure how well the glass remains adhered to the PVB sheet. In particular, at pummel standard 0, no glass is left adhered to the PVB sheet. At hit standard 10, 100% of the glass was left adhered to the PVB sheet.
2. Adhesion property
This test measures the tendency of a PVB sheet to adhere to itself. In this test, two rectangular strips of sheet are cut and placed completely overlapping together. The top of each pair of sheets is adhered to a piece of tape of the corresponding size. The film pair was placed in the center between two steel plates and was laminated at 7 ℃ to 25 ℃ for 24 hours under a pressure of 69 kPa. The test pieces were then peeled in a 90 degree peel test using a peel tester at a peel rate of 84 inches/minute. Blocking force was quantified in pounds per inch (PLI).
The test results are given in table seven below.
Watch seven
| Item | Strikeviscosity | adhesion/PLI |
| Comparative example 1 | 4.9 | 0.125 |
| Comparative example 2 | 5.4 | 5.36 |
| Comparative example 3 | 3.5 | 0.212 |
| Example 1 | 5.3 | 0.037 |
| Example 2 | 4.9 | 0.042 |
| Example 3 | 6.3 | 0.092 |
| Example 4 | 5.2 | 0.036 |
| Example 5 | 5.1 | 0.032 |
From the above comparative analysis, it can be seen that the PVB film of the present invention added with the Si-Al film opening agent has less effect on the adhesion with glass and a larger reduction in the adhesion between the film surface and the glass surface than the PVB films of comparative examples 1-3.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. An anti-adhesion PVB film is characterized by comprising the following components in parts by weight:
60-85 parts of PVB resin powder;
3-8 parts of a plasticizer;
1-5 parts of a silicon-aluminum film opening agent;
10-30 parts of water.
2. The anti-blocking PVB film according to claim 1 comprising the following components in parts by weight:
60-70 parts of PVB resin powder;
3-8 parts of a plasticizer;
1-3 parts of a silicon-aluminum film opening agent;
20-30 parts of water.
3. The anti-blocking PVB film according to claim 1, wherein said silicon-aluminum film opening agent is prepared by:
s1: preparing a water glass solution with the silicon dioxide concentration of 10-20 wt% and the modulus of 3.35 for later use;
s2: adding water and aluminum salt into a reaction kettle at the temperature of 30-60 ℃, adding 10-30 wt% sulfuric acid after the aluminum salt is completely dissolved, and adjusting the pH value to 1-3;
s3: simultaneously adding the prepared water glass solution and sulfuric acid into an aluminum salt solution, wherein the parallel flow time is 30-60 min, and the pH value of the system is kept at 1-3;
s4: after the parallel flow is finished, adding sodium hydroxide, adjusting the pH value to 8-10, simultaneously heating to 80-100 ℃, and aging for 2h at the temperature;
s5: after the aging is finished, adding dilute sulfuric acid, adjusting the pH value to 2-4, aging for 0.5-1.5 h, cooling to 60-70 ℃, and filtering to obtain a filter cake;
s6: sequentially washing the filter cake with 1-3 wt% sulfuric acid and water, re-dispersing the washed filter cake in a small amount of water, adding 1-3% of solid content organosilane dispersing agent, and uniformly dispersing to obtain slurry;
s7: spray drying the slurry, and then crushing by air flow to obtain the silicon-aluminum film opening agent with the grain size of 3-7 mu m.
4. The anti-blocking PVB film according to claim 3, wherein said aluminum salt solution is one or more of aluminum sulfate solution, aluminum nitrate solution, and aluminum chloride solution.
5. The anti-blocking PVB film according to claim 3, wherein the molar ratio of aluminum in said aluminum salt solution to silicon in said water glass is 0.05-0.30: 1.
6. the anti-blocking PVB film according to claim 3, wherein said organosilane dispersing agent is one or more of KH-550, KH-104, KH-910 in combination.
7. The anti-blocking PVB film of claim 1, wherein the mass ratio of the silicon-aluminum film opening agent to the PVB resin powder to the water is 1: 10-19: 2-6.
8. The anti-blocking PVB film according to claim 1, wherein said plasticizer is one or a combination of diethylene glycol dibenzoate, dibutyl phthalate, and dioctyl phthalate.
9. The anti-blocking PVB film of claim 1, further comprising the following components in parts by weight: 0.1-1 part of flame retardant; 0.1-1 part of antistatic agent.
10. The anti-blocking PVB film according to claim 9, wherein said flame retardant is a flame retardant DDP; the antistatic agent is trihydroxyethyl methyl quaternary ammonium methyl sulfate.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104098104A (en) * | 2014-07-18 | 2014-10-15 | 冷水江三A新材料科技有限公司 | Preparation method of plastic film anti-blocking agent prepared by sodium alumino silicate |
| CN108314970A (en) * | 2017-12-28 | 2018-07-24 | 张家港外星人新材料科技有限公司 | The resist blocking and that PVB films and its preparation method of long-term non-isolating film protection when more than 10 DEG C |
| CN109705402A (en) * | 2019-01-08 | 2019-05-03 | 广州凌玮科技股份有限公司 | A kind of preparation method of aerogel opening agent |
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2020
- 2020-08-19 CN CN202010839106.6A patent/CN112080094A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098104A (en) * | 2014-07-18 | 2014-10-15 | 冷水江三A新材料科技有限公司 | Preparation method of plastic film anti-blocking agent prepared by sodium alumino silicate |
| CN108314970A (en) * | 2017-12-28 | 2018-07-24 | 张家港外星人新材料科技有限公司 | The resist blocking and that PVB films and its preparation method of long-term non-isolating film protection when more than 10 DEG C |
| CN109705402A (en) * | 2019-01-08 | 2019-05-03 | 广州凌玮科技股份有限公司 | A kind of preparation method of aerogel opening agent |
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