CN113845852A - Glass PVB film with sound insulation and ultraviolet insulation functions and preparation method thereof - Google Patents
Glass PVB film with sound insulation and ultraviolet insulation functions and preparation method thereof Download PDFInfo
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- CN113845852A CN113845852A CN202111173782.5A CN202111173782A CN113845852A CN 113845852 A CN113845852 A CN 113845852A CN 202111173782 A CN202111173782 A CN 202111173782A CN 113845852 A CN113845852 A CN 113845852A
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- 238000009413 insulation Methods 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000010410 layer Substances 0.000 claims abstract description 91
- 238000003756 stirring Methods 0.000 claims abstract description 67
- 239000000839 emulsion Substances 0.000 claims abstract description 52
- 239000000843 powder Substances 0.000 claims abstract description 44
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical class O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000011521 glass Substances 0.000 claims abstract description 40
- 229920000642 polymer Polymers 0.000 claims abstract description 38
- 239000011229 interlayer Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000000155 melt Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 238000001354 calcination Methods 0.000 claims description 20
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical class Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims description 17
- 239000004814 polyurethane Substances 0.000 claims description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000440 bentonite Substances 0.000 claims description 12
- 229910000278 bentonite Inorganic materials 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 239000013543 active substance Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 239000010456 wollastonite Substances 0.000 claims description 11
- 229910052882 wollastonite Inorganic materials 0.000 claims description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 229910021389 graphene Inorganic materials 0.000 claims description 7
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 230000036632 reaction speed Effects 0.000 claims description 7
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 7
- 229960000892 attapulgite Drugs 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 238000007731 hot pressing Methods 0.000 claims description 6
- 229910052625 palygorskite Inorganic materials 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 6
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 5
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 5
- 229960001545 hydrotalcite Drugs 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000012190 activator Substances 0.000 claims 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 59
- 235000012239 silicon dioxide Nutrition 0.000 description 10
- BYMMIQCVDHHYGG-UHFFFAOYSA-N Cl.OP(O)(O)=O Chemical group Cl.OP(O)(O)=O BYMMIQCVDHHYGG-UHFFFAOYSA-N 0.000 description 5
- 230000032683 aging Effects 0.000 description 5
- 239000007853 buffer solution Substances 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 2
- 238000003181 co-melting Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000005340 laminated glass Substances 0.000 description 2
- 235000010413 sodium alginate Nutrition 0.000 description 2
- 229940005550 sodium alginate Drugs 0.000 description 2
- 239000000661 sodium alginate Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/41—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the carrier layer
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- C09J2423/00—Presence of polyolefin
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- C09J2475/00—Presence of polyurethane
- C09J2475/003—Presence of polyurethane in the primer coating
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Abstract
The invention discloses a glass PVB film with sound insulation and ultraviolet insulation functions and a preparation method thereof, belonging to the field of PVB films, wherein the glass PVB film with sound insulation and ultraviolet insulation functions comprises an intermediate layer and PVB layers respectively arranged at two sides of the intermediate layer, the intermediate layer and the PVB layers are subjected to hot press molding at the temperature of 130-140 ℃ to form the glass PVB film, the intermediate layer is prepared by adding grafted shell powder into polymer emulsion, adding a melt blend of modified bentonite and PA6, finally adding EVA resin, and after stirring is finished, performing co-extrusion or roll forming to obtain the intermediate layer. The glass PVB film is obtained by hot-press molding two PVB layers on two sides of the interlayer, the interlayer adopts polymer emulsion, grafted shell powder and a melt blend of modified bentonite and PA6, the interlayer distance of the modified bentonite is increased, so that the entrance of external media is blocked, and meanwhile, the toughness of the PVB film is stabilized by using PA6 and the sound insulation and ultraviolet insulation performance of the product are enhanced by matching with the grafted shell powder.
Description
Technical Field
The invention relates to the field of PVB (polyvinyl butyral) films, in particular to a glass PVB film with sound insulation and ultraviolet insulation functions and a preparation method thereof.
Background
The PVB intermediate film is a semitransparent film, is mainly used for laminated glass, and is special glass formed by sandwiching a layer of PVB film between two pieces of glass, compounding under high pressure and heating. The PVB laminated glass has multiple functions of safety, heat preservation, noise control, ultraviolet isolation and the like, and is widely applied to industries such as buildings, automobiles, photovoltaics and the like. The PVB intermediate film produced by adopting the special formula also has wide application in the fields of aerospace, military, high and new technology industry and the like, such as application in airplanes, spacecrafts, military instruments, solar cells, solar receivers and the like.
The existing glass PVB film has poor sound insulation and ultraviolet insulation functions, the service efficiency of the glass PVB film is influenced, and on the basis, further improvement treatment is needed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a glass PVB film with sound insulation and ultraviolet insulation functions and a preparation method thereof.
In order to solve the above problems, the present invention adopts the following technical solutions.
The invention provides a glass PVB film with sound insulation and ultraviolet insulation functions, which comprises an intermediate layer and PVB layers respectively arranged at two sides of the intermediate layer, wherein the intermediate layer and the PVB layers are subjected to hot press molding at the temperature of 130-140 ℃ to form the glass PVB film; the middle layer is obtained by adding grafted shell powder into polymer emulsion, adding a melt blend of modified bentonite and PA6, finally adding EVA resin, and performing co-extrusion or roll forming after stirring. The glass PVB film also comprises at least one PU coating layer, and the PU coating layer is positioned between the interlayer and the PVB layer. Alternatively, a UV coating may be used. Or the PVB film of the glass also comprises at least one ultraviolet layer, the ultraviolet layer is positioned between the middle layer and the PVB layer, the ultraviolet layer is prepared by the following method, nano attapulgite is fed into an ultraviolet agent according to the weight ratio of 1:3, then stirring treatment is carried out, then a powder aid accounting for 20-30% of the total amount of the nano attapulgite is added, stirring is carried out for 10-20min, and finally drying is carried out, thus obtaining the PVB film. The ultraviolet agent is prepared by grinding wollastonite into powder, mixing the wollastonite with hydrotalcite, grinding, sieving with 500-mesh sieve for 600 meshes, standing at 40-50 ℃ for 1-3 days, soaking in 2.0 mass percent silane coupling agent aqueous solution 2 times of the wollastonite for 3-4 hours, filtering, washing with clear water, and drying.
The second invention aims to provide a preparation method of the glass PVB film with sound insulation and ultraviolet insulation functions, which comprises the following steps:
firstly, adding grafted shell powder into polymer emulsion, adding a melt blend of modified bentonite and PA6 accounting for 20-30% of the total amount of the polymer emulsion, finally adding EVA resin accounting for 1-2 times of the total amount of the polymer emulsion, stirring at the stirring temperature of 80-90 ℃ at the rotating speed of 100-500r/min for 20-30min, and co-extruding or roll forming to obtain an intermediate layer after stirring is finished;
and secondly, hot-pressing two PVB layers on two side surfaces of the middle layer to obtain the glass PVB film.
Preferably, in the above preparation method, the preparation method of the polymer emulsion of the first step is: mixing and stirring the styrene-acrylic emulsion, the polyurethane emulsion and the graphene according to the weight ratio of 3:2:1 to obtain the polymer emulsion.
Preferably, in the above preparation method, the preparation method of the grafted shell powder in the first step is: the method comprises the steps of feeding shell powder into a maleic anhydride solution with the mass fraction of 30-40% according to the weight ratio of 1:3, then adding a silane coupling agent KH550 with the mass fraction of 10% of the shell powder, reacting at the temperature of 70-90 ℃ for 20-30min at the reaction speed of 100-500r/min, and obtaining the grafted shell powder after the reaction is finished.
Preferably, in the above production method, the method for modifying modified bentonite in the first step is: and (2) delivering the natural bentonite to a calcining furnace for calcining at the calcining temperature of 400-500 ℃, for 20-30min, after the calcining is finished, cooling to 70-80 ℃, delivering the natural bentonite to an active agent for ultrasonic dispersion for 10-20min, wherein the ultrasonic power is 100-200W, and then taking out, washing and drying to obtain the modified bentonite. The active agent can be prepared by mixing silicon dioxide and titanium dioxide according to the weight ratio of 1:3, then adding modified lanthanum chloride accounting for 10-20% of the total weight of the silicon dioxide, and stirring until the raw materials are fully mixed. The modified lanthanum chloride can be obtained by feeding lanthanum chloride into a buffer solution for stirring treatment, wherein the stirring temperature is 60-80 ℃, the stirring speed is 150-250r/min, the stirring time is 20-30min, the stirring is finished, and then the laser irradiation treatment is carried out. The power of the laser irradiation treatment can be 100-500W, and the irradiation time can be 20-30 min. The power is preferably 300W and the irradiation time is preferably 25 min. The buffer is preferably phosphoric acid-hydrochloric acid, and is treated in a weight ratio of 3: 1. Preferably, the dispersion aid is a sodium alginate solution with the mass fraction of 20-30%.
The second purpose of the invention is to provide another glass PVB film with sound insulation and ultraviolet insulation functions, which comprises an intermediate layer and PVB layers respectively arranged on two sides of the intermediate layer, wherein the intermediate layer consists of an inner layer and a PA6 layer; the inner layer is obtained by adding grafted shell powder into polymer emulsion, adding modified bentonite, finally adding EVA resin, and co-extruding or roll-forming after stirring; the inner layer, PA6 layer, and pair of PVB layers are hot-pressed in a solid-liquid mixing state to form the glass PVB film. The PVB membrane that this scheme formed is hot pressing under solid-liquid mixed state, and the inlayer is modified bentonite place layer one side promptly and is combined with PA6 layer, and the opposite side combines with the PVB layer, and hot briquetting has irregular transition layer under the solid-liquid mixed state of combination department, and the big interval space of reflection dynamics is many, embodies stronger syllable-dividing and separates the ultraviolet effect, has the characteristics of high tenacity, strong tensile tear performance and low haze simultaneously.
Compared with the prior art, the invention has the advantages that:
the glass PVB film is obtained by hot-press molding two PVB layers on two sides of an interlayer, the interlayer adopts polymer emulsion, grafted shell powder and a melt blend of modified bentonite and PA6, the interlayer distance of the modified bentonite is increased, so that the entrance of external media is blocked, and meanwhile, the toughness of the PVB film is stabilized by using PA6 and the sound insulation and ultraviolet insulation performance of the product are enhanced by matching with the grafted shell powder.
Secondly, a PU layer can be added into the PVB film of the glass and cured to form an anti-ultraviolet barrier, so that the ultraviolet isolation performance can be improved.
And thirdly, an ultraviolet layer which is prepared by mixing wollastonite, hydrotalcite and other raw materials can be added into the PVB film, so that the density of the raw materials can be enhanced, the sound insulation and ultraviolet resistance of the product can be greatly enhanced, and the overall performance of the product can be improved.
The interlayer of the glass PVB film can be divided into an inner layer and a PA6 layer, the interlayer is obtained by hot press molding the PVB film, the inner layer, the PA6 layer and the PVB film in a solid-liquid mixed state sequentially, an irregular transition layer is arranged at the joint of each layer, the reflection force is large, the interval space is large, the sound insulation and ultraviolet insulation effects are strong, and the interlayer has the characteristics of high toughness, high tensile resistance and low haze.
Detailed Description
Example 1:
s1: mixing and stirring the styrene-acrylic emulsion, the polyurethane emulsion and the graphene according to the weight ratio of 3:2:1 to obtain a polymer emulsion;
s2: sending shell powder into a maleic anhydride solution with the mass fraction of 30% according to the weight ratio of 1:3, then adding a silane coupling agent KH550 with the mass fraction of 10% of the shell powder, reacting at the temperature of 70 ℃ for 20min, wherein the reaction speed is 100r/min, and obtaining grafted shell powder after the reaction is finished;
s3: feeding lanthanum chloride into a reactor with the weight ratio of 3: stirring the phosphoric acid-hydrochloric acid buffer solution treated by the step 1 at the stirring temperature of 60 ℃, at the stirring speed of 150r/min for 20min, and irradiating 100W laser for 20min to obtain modified lanthanum chloride for later use after stirring;
mixing silicon dioxide and titanium dioxide according to the weight ratio of 1:3, then adding the prepared modified lanthanum chloride, wherein the total amount of the modified lanthanum chloride is 10% of the total amount of the silicon dioxide, and stirring until the raw materials are fully mixed to obtain an active agent for later use;
delivering natural bentonite into a calcining furnace for calcining at 400 ℃ for 20min, cooling to 80 ℃ after calcining, delivering the natural bentonite into the prepared active agent for ultrasonic dispersion for 10min with the ultrasonic power of 100W, taking out, washing with water, and drying to obtain modified bentonite;
s4: mixing the modified bentonite obtained in the step S3 with PV6 in a weight ratio of 1: 1, mixing and carrying out eutectic melting for 50min at 220 ℃ to obtain a melt blend of the modified bentonite and PA 6;
s5: adding grafted shell powder obtained by S2 into polymer emulsion obtained by S1 according to the weight ratio of 3:1, then adding melt blend obtained by the step of S4 accounting for 20% of the total amount of the polymer emulsion, finally adding EVA resin accounting for 1 time of the total amount of the polymer emulsion, continuously stirring at the rotating speed of 100r/min for 20min, wherein the stirring temperature is 80 ℃, and after the stirring is finished, co-extruding to obtain the middle layer;
s6: and hot-pressing two PVB layers at 130 ℃ to form two sides of the interlayer obtained in the step S5 to obtain the glass PVB film. The product performance test data for glass PVB films are filled in table 1.
Example 2:
s1: mixing and stirring the styrene-acrylic emulsion, the polyurethane emulsion and the graphene according to the weight ratio of 3:2:1 to obtain a polymer emulsion;
s2: sending shell powder into a maleic anhydride solution with the mass fraction of 40% according to the weight ratio of 1:3, then adding a silane coupling agent KH550 with the mass fraction of 10% of the shell powder, reacting at the temperature of 90 ℃ for 30min, wherein the reaction speed is 500r/min, and obtaining grafted shell powder after the reaction is finished;
s3: feeding lanthanum chloride into a reactor with the weight ratio of 3:1, stirring the phosphoric acid-hydrochloric acid buffer solution obtained by the treatment, wherein the stirring temperature is 80 ℃, the stirring speed is 250r/min, the stirring time is 30min, the stirring is finished, and then 500W laser irradiation is carried out for 30min to obtain modified lanthanum chloride;
mixing silicon dioxide and titanium dioxide according to the weight ratio of 1:3, then adding the modified lanthanum chloride accounting for 20% of the total weight of the silicon dioxide, and stirring until the raw materials are fully mixed to obtain an active agent;
delivering the natural bentonite to a calcining furnace for calcining at 500 ℃ for 30min, cooling to 80 ℃ after calcining, delivering the natural bentonite into the prepared active agent for ultrasonic dispersion for 20min with the ultrasonic power of 200W, taking out, washing with water, and drying to obtain modified bentonite;
s4: mixing the modified bentonite obtained in the step S3 with PV6 in a weight ratio of 1: 1, co-melting for 50min at 220 ℃ to obtain a melt blend of the modified bentonite and PA 6;
s5: adding grafted shell powder into the polymer emulsion according to the weight ratio of 3:1, then adding the melt blend obtained in the step S4 with the total amount of the polymer emulsion being 30%, finally adding EVA resin with the total amount of the polymer emulsion being 2 times of that of the polymer emulsion, continuously stirring at the rotating speed of 500r/min for 30min, wherein the stirring temperature is 90 ℃, and after the stirring, co-extruding to obtain an intermediate layer;
s6: grinding wollastonite into powder, mixing the wollastonite with hydrotalcite, grinding, sieving by a 500-mesh sieve, then placing for 3 days at the temperature of 50 ℃, then soaking in 2.0 mass percent silane coupling agent aqueous solution which is 2 times of the mass of the wollastonite for 4 hours, then filtering, washing by clear water, and drying to obtain an ultraviolet agent;
feeding nano attapulgite into the obtained ultraviolet agent according to the weight ratio of 1:3, stirring, adding a pulvis (sodium alginate solution with the mass fraction of 30%) of the nano attapulgite, stirring for 10-20min, and drying to obtain an ultraviolet layer;
s7: and (3) carrying out hot press molding on the two PVB layers, the ultraviolet layer obtained in the step S6 and the intermediate layer obtained in the step S5 at 140 ℃, wherein the two PVB layers are respectively positioned at the outermost sides, and thus obtaining the glass PVB film. The product performance test data for glass PVB films are filled in table 1.
Example 3:
s1: mixing and stirring the styrene-acrylic emulsion, the polyurethane emulsion and the graphene according to the weight ratio of 3:2:1 to obtain a polymer emulsion;
s2: sending shell powder into a maleic anhydride solution with the mass fraction of 35% according to the weight ratio of 1:3, then adding a silane coupling agent KH550 with the mass fraction of 10% of the shell powder, reacting at the temperature of 80 ℃ for 25min, wherein the reaction speed is 300r/min, and obtaining grafted shell powder after the reaction is finished;
s3: feeding lanthanum chloride into a reactor with the weight ratio of 3:1, stirring in a phosphoric acid-hydrochloric acid buffer solution at the stirring temperature of 70 ℃, the stirring speed of 200r/min for 25min, and then irradiating by 300W laser for 25min to obtain modified lanthanum chloride;
mixing silicon dioxide and titanium dioxide according to the weight ratio of 1:3, then adding the modified lanthanum chloride accounting for 15% of the total weight of the silicon dioxide, and stirring until the raw materials are fully mixed to obtain an active agent;
delivering natural bentonite into a calcining furnace for calcining at the temperature of 450 ℃ for 25min, cooling to 80 ℃ after calcining is finished, delivering the natural bentonite into the prepared active agent for ultrasonic dispersion for 15min with the ultrasonic power of 150W, taking out, washing with water, and drying to obtain modified bentonite;
s4: mixing the modified bentonite obtained in the step S3 with PV6 in a weight ratio of 1: 1, co-melting for 50min at 220 ℃ to obtain a melt blend of the modified bentonite and PA 6;
s5: adding grafted shell powder of S2 into polymer emulsion of S1 according to the weight ratio of 3:1, then adding modified bentonite obtained by S3 accounting for 25% of the total weight of the polymer emulsion, finally adding EVA resin accounting for 1.5 times of the total weight of the polymer emulsion, continuously stirring at the rotating speed of 300r/min for 25min, wherein the stirring temperature is 85 ℃, after stirring, obtaining the intermediate layer by roll forming;
s6: coating a PU coating on one side of the middle layer of S5 and curing;
s7: and (3) hot-pressing and molding two PVB layers at 130 ℃ on two sides of the interlayer treated by the S6 to obtain the glass PVB film. The product performance test data for glass PVB films are filled in table 1.
Example 4:
s1: mixing and stirring the styrene-acrylic emulsion, the polyurethane emulsion and the graphene according to the weight ratio of 3:2:1 to obtain a polymer emulsion;
s2: sending shell powder into a maleic anhydride solution with the mass fraction of 40% according to the weight ratio of 1:3, then adding a silane coupling agent KH550 with the mass fraction of 10% of the shell powder, reacting at the temperature of 90 ℃ for 30min, wherein the reaction speed is 500r/min, and obtaining grafted shell powder after the reaction is finished;
s3: feeding lanthanum chloride into a reactor with the weight ratio of 3:1, stirring the phosphoric acid-hydrochloric acid buffer solution obtained by the treatment, wherein the stirring temperature is 80 ℃, the stirring speed is 250r/min, the stirring time is 30min, the stirring is finished, and then 500W laser irradiation is carried out for 30min to obtain modified lanthanum chloride;
mixing silicon dioxide and titanium dioxide according to the weight ratio of 1:3, then adding the modified lanthanum chloride accounting for 20% of the total weight of the silicon dioxide, and stirring until the raw materials are fully mixed to obtain an active agent;
delivering the natural bentonite to a calcining furnace for calcining at 500 ℃ for 30min, cooling to 80 ℃ after calcining, delivering the natural bentonite into the prepared active agent for ultrasonic dispersion for 20min with the ultrasonic power of 200W, taking out, washing with water, and drying to obtain modified bentonite;
s4: adding grafted shell powder of S2 into polymer emulsion of S1 according to the weight ratio of 3:1, then adding modified bentonite obtained in the step of S3 accounting for 30% of the total weight of the polymer emulsion, finally adding EVA resin accounting for 2 times of the total weight of the polymer emulsion, continuously stirring at the rotating speed of 500r/min for 30min, wherein the stirring temperature is 90 ℃, stirring is finished, and co-extruding to obtain an inner layer;
s5: and (3) carrying out hot press molding on the PVB layer, the inner layer obtained from S4, the PA6 layer and the PVB layer in sequence at 130 ℃ in a semi-solid state to obtain the glass PVB film. The product performance test data for glass PVB films are filled in table 1.
Comparative example:
s1: mixing and stirring the styrene-acrylic emulsion, the polyurethane emulsion and the graphene according to the weight ratio of 3:2:1 to obtain a polymer emulsion;
s2: sending shell powder into a maleic anhydride solution with the mass fraction of 35% according to the weight ratio of 1:3, then adding a silane coupling agent KH550 with the mass fraction of 10% of the shell powder, reacting at the temperature of 80 ℃ for 25min, wherein the reaction speed is 300r/min, and obtaining grafted shell powder after the reaction is finished;
s3: adding grafted shell powder of S2 into polymer emulsion of S1 according to the weight ratio of 3:1, then adding PA6 accounting for 25% of the total weight of the polymer emulsion, finally adding EVA resin accounting for 1.5 times of the total weight of the polymer emulsion, continuously stirring at the rotating speed of 300r/min for 25min, wherein the stirring temperature is 85 ℃, and after the stirring, obtaining the intermediate layer through roll forming;
s4: coating a PU coating on one side of the middle layer of S3 and curing;
s5: and (3) hot-pressing and molding two PVB layers at 130 ℃ on two sides of the interlayer treated by the S4 to obtain the glass PVB film. The product performance test data for glass PVB films are filled in table 1.
Results analysis example:
the product properties of examples 1-3 and comparative example 1 were tested as follows:
| group of | Coefficient of attraction | Resistance to ageing (h) |
| Example 1 | 0.75 | 1215 |
| Example 2 | 0.79 | 1220 |
| Example 3 | 0.78 | 1218 |
| Example 4 | 0.76 | 1216 |
| Comparative example | 0.62 | 1050 |
From the data in the above table, it can be seen that in example 1, when no additional uv layer or PU coating is used, the uv absorption coefficient is lower and the aging resistance time is shorter, while when a uv layer prepared from wollastonite, hydrotalcite, or other raw materials is used, the uv absorption coefficient of the glass PVB film is higher than that of the composite PU coating, and the aging resistance effect is stronger, so that it can be seen that the uv layer can enhance the density between the raw materials, thereby enhancing the sound insulation and uv resistance of the product, and further improving the overall performance of the product, and the PU coating is inferior and slightly better than that of the unused uv layer.
While example 4 is a PVB film prepared using a PVB layer, an inner layer obtained from S4, a PA6 layer, and a PVB layer in that order, the resulting PVB film has both better absorption coefficient and better aging resistance than the PVB film prepared by melt blending the PA6 layer into the inner layer in example 1.
According to the comparative example, when the melt blend of the modified bentonite and the PA6 was not used, the attraction coefficient and the aging resistance were the lowest, and it was found that the addition of the polymer emulsion, the grafted shell powder, the modified bentonite, the PA6, etc. had strong performance for blocking the entrance of the external medium, insulating sound, and shielding ultraviolet rays.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a glass PVB membrane with give sound insulation and separate ultraviolet function which characterized in that: comprises an interlayer and PVB layers respectively arranged at two sides of the interlayer;
the middle layer is obtained by adding grafted shell powder into polymer emulsion, adding a melt blend of modified bentonite and PA6, finally adding EVA resin, and performing co-extrusion or roll forming after stirring;
and the interlayer and the pair of PVB layers are subjected to hot-press molding at the temperature of 130-140 ℃ to form the glass PVB film.
2. The PVB film with sound and ultraviolet insulation function as claimed in claim 1, wherein: also included is at least one PU coating, the PU coating being located between the interlayer and the PVB layer.
3. The PVB film with sound and ultraviolet insulation function as claimed in claim 1, wherein: the ultraviolet layer is positioned between the interlayer and the PVB layer, and is obtained by feeding nano attapulgite into an ultraviolet agent according to the weight ratio of 1:3, then carrying out stirring treatment, then adding a powder aid accounting for 20-30% of the total weight of the nano attapulgite, stirring for 10-20min, and finally drying.
4. The PVB film with sound and ultraviolet insulation function as claimed in claim 3, wherein: the ultraviolet agent is prepared by grinding wollastonite into powder, mixing the wollastonite with hydrotalcite, grinding, sieving with a sieve of 500 meshes to 600 meshes, standing at 40-50 ℃ for 1-3 days, soaking in 2.0 mass percent silane coupling agent aqueous solution which is 2 times of the wollastonite in mass for 3-4 hours, filtering, washing with clear water, and drying.
5. The process of preparing a glass PVB film with sound-insulating and UV-insulating functions as claimed in any one of claims 1 to 4, wherein: the method comprises the following steps:
firstly, adding grafted shell powder into polymer emulsion, adding a melt blend of modified bentonite and PA6 accounting for 20-30% of the total amount of the polymer emulsion, finally adding EVA resin accounting for 1-2 times of the total amount of the polymer emulsion, stirring at the stirring temperature of 80-90 ℃ at the rotating speed of 100-500r/min for 20-30min, and co-extruding or roll forming to obtain an intermediate layer after stirring is finished;
and secondly, hot-pressing two PVB layers on two side surfaces of the interlayer after the coating of the second step to obtain the glass PVB film.
6. The process of claim 5, wherein the PVB film is prepared from a glass having sound-insulating and UV-insulating properties, and comprises: the polymer emulsion is obtained by mixing and stirring styrene-acrylic emulsion, polyurethane emulsion and graphene according to the weight ratio of 3:2: 1.
7. The process of claim 5, wherein the PVB film is prepared from a glass having sound-insulating and UV-insulating properties, and comprises: the grafted shell powder is obtained by feeding shell powder into a maleic anhydride solution with the mass fraction of 30-40% according to the weight ratio of 1:3, then adding a silane coupling agent KH550 with the mass fraction of 10% of the shell powder, reacting at the temperature of 70-90 ℃ for 20-30min, wherein the reaction speed is 500r/min, and finishing the reaction.
8. The method for preparing the PVB film with the functions of sound insulation and ultraviolet insulation as claimed in claim 5, wherein the modified bentonite is obtained by delivering natural bentonite into a calcining furnace for calcining at the calcining temperature of 400-200 ℃ for 20-30min, cooling to 70-80 ℃ after calcining, delivering the natural bentonite into an active agent for ultrasonic dispersion for 10-20min at the ultrasonic power of 100-200W, taking out, washing with water, and drying.
9. The process for preparing PVB film as claimed in claim 8, wherein the activator is prepared by mixing silica and titanium dioxide at a weight ratio of 1:3, adding 10-20% of modified lanthanum chloride, and stirring until the raw materials are fully mixed.
10. The utility model provides a glass PVB membrane with give sound insulation and separate ultraviolet function which characterized in that: the intermediate layer of claim 1 consisting of an inner layer and a PA6 layer; the inner layer is obtained by adding grafted shell powder into polymer emulsion, adding modified bentonite, finally adding EVA resin, and co-extruding or roll-forming after stirring;
the inner layer, PA6 layer, and pair of PVB layers are hot-pressed in a solid-liquid mixing state to form the glass PVB film.
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