阅读说明：本技术 一种汽车用强吸音固定胶带及其制备方法 (Strong sound absorption fixing adhesive tape for automobile and preparation method thereof ) 是由 严亮 陈文旭 徐赢斐 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种汽车用强吸音固定胶带,其特征在于,自上而下依次包括第一离型膜层、第一胶粘层、隔音功能层、第二胶粘层、第二离型膜层；所述隔音功能层是由如下按重量份的各原料制成：磺化聚苯硫醚砜80-90份、发泡剂8-15份、2-丙烯酰胺基-2-甲基丙磺酸6-9份、五氧化二磷2-4份、多聚磷酸0.8-1.3份。本发明公开的汽车用强吸音固定胶带吸音效果显著,粘合强度高,耐老化性能足,持粘性、耐热性和机械力学性能优异,具有互穿网络结构。(The invention discloses a strong sound absorption fixing adhesive tape for an automobile, which is characterized by sequentially comprising a first release film layer, a first adhesive layer, a sound insulation functional layer, a second adhesive layer and a second release film layer from top to bottom; the sound insulation functional layer is prepared from the following raw materials in parts by weight: 80-90 parts of sulfonated polyphenylene sulfide sulfone, 8-15 parts of foaming agent, 6-9 parts of 2-acrylamide-2-methylpropanesulfonic acid, 2-4 parts of phosphorus pentoxide and 0.8-1.3 parts of polyphosphoric acid. The strong sound-absorbing fixing adhesive tape for the automobile disclosed by the invention has the advantages of obvious sound-absorbing effect, high bonding strength, sufficient aging resistance, excellent permanent viscosity, heat resistance and mechanical property and interpenetrating network structure.)

1. The strong sound absorption fixing adhesive tape for the automobile is characterized by sequentially comprising a first release film layer, a first adhesive layer, a sound insulation functional layer, a second adhesive layer and a second release film layer from top to bottom; the sound insulation functional layer is prepared from the following raw materials in parts by weight: 80-90 parts of sulfonated polyphenylene sulfide sulfone, 8-15 parts of foaming agent, 6-9 parts of 2-acrylamido-2-methylpropanesulfonic acid, 2-4 parts of phosphorus pentoxide and 0.8-1.3 parts of polyphosphoric acid; the first adhesive layer and the second adhesive layer have the same components and independently comprise a component A and a component B respectively; wherein the component A is prepared from the following components in parts by weight: 60-80 parts of acrylic pressure-sensitive adhesive, 518-12 parts of novolac epoxy resin F, 2-4 parts of 1, 3-bis (ethylene oxide methyl) -5- (2-propenyl) -1,3, 5-triazine-2, 4,6(1H,3H,5H) -trione, 1-3 parts of trivinyl trimethyl cyclotrisilazane, 1-3 parts of 1-allyl-3-vinyl imidazole chloride salt, 0.5-1 part of photoinitiator, 5-8 parts of filler, 0.3-0.6 part of dicyandiamide and 10-20 parts of solvent; the component B comprises: 4-8 parts of Meso-tetramethyl-Meso-tetra-p-aminophenyl calix [4] pyrrole, 1-3 parts of 2, 2-bis [4- (4-aminophenoxy) phenyl ] -1,1,1,3,3, 3-hexafluoropropane and 7-10 parts of N, N-dimethylformamide; the mass ratio of the component A to the component B is (3-5) to 1.

2. The strong sound absorption fixing tape for automobile according to claim 1, wherein the first release film layer and the second release film layer are made of any one of PE release film, PET release film, OPP release film independently from each other; and a low-silicon release agent is coated on the release film.

3. The strong sound absorption fixing tape for automobile according to claim 1, wherein the sulfonated polyphenylene sulfide sulfone is sulfonated polyphenylene sulfide sulfone having a sulfonation degree of 15.7%.

4. The strong sound-absorbing fixing tape for automobiles according to claim 1, wherein the foaming agent is at least one of barium azodicarboxylate, trihydrazinotriazine, p-toluenesulfonyl semicarbazide.

5. The strong sound-absorbing fixing tape for automobiles according to claim 1, wherein the preparation method of the sound-insulating functional layer comprises: uniformly mixing the raw materials to obtain a mixed material, adding a polymerization inhibitor with the mass being 1% -3% of the mass of the mixed material, continuously uniformly mixing, adding the mixed material into a double-screw extruder, and sequentially performing extrusion, roller calendering, cooling solidification, ether washing and drying to obtain the sound insulation functional layer.

6. The strong sound-absorbing fixing tape for automobiles according to claim 5, wherein the polymerization inhibitor is at least one of chloranil and 1, 4-naphthoquinone; the extrusion temperature was 320-345 ℃.

7. The strong sound absorption fixing tape for automobile according to claim 1, wherein the acrylic pressure sensitive adhesive is a german han acrylic pressure sensitive adhesive DURO-TAK 8604-2; the photoinitiator is at least one of benzoin dimethyl ether, benzoin ethyl ether, benzoin isopropyl ether and benzoin butyl ether.

8. The strong sound absorption fixing tape for automobile according to claim 1, wherein the filler is at least one of iron oxide, aluminum oxide, and fine silica powder; the particle size of the filler is 900-1100 meshes; the solvent is any one of ethyl acetate and acetone.

9. The method for preparing the strong sound absorption fixing tape for the automobile according to any one of claims 1 to 8, comprising the steps of: performing double-sided corona pretreatment on the sound insulation functional layer; then respectively coating the component A of the adhesive layer on the upper surface and the lower surface of the sound-insulating functional layer, standing for 2-3h at normal temperature, and then attaching the first release film layer and the second release film layer to prepare the adhesive tape; coating the adhesive layer B on the surface of an object to be pasted, peeling the release film layer from the adhesive tape, pasting the adhesive tape on the surface of the object to be pasted, drying, and irradiating for 30-40min under ultraviolet light of 220-260nm, thus obtaining the automobile strong sound absorption fixing adhesive tape.

Technical Field

The invention relates to the technical field of adhesive tapes, in particular to a strong sound absorption fixing adhesive tape for an automobile and a preparation method thereof.

Background

With the rapid development of science and technology, automobiles become indispensable vehicles more and more, and the use is very frequent and common. As a recent trend of automobile development, quietness in the automobile is receiving much attention. During the running of the automobile, vibration and noise are inevitably generated by the automobile body, particularly noise from windows, tires, the lower part of the automobile body, an engine and a motor, and the driving and riding environmental comfort of a driver and passengers are seriously affected. Under such circumstances, sound-absorbing materials for automobiles have come to be used, and their appearance has attracted much attention.

In the automobile, a large number of interior ornaments, such as side leather, door panel interior sound insulation cotton, automobile body interior components, ceiling cloth and the like, can use adhesive tapes in the installation and setting process to play a role in fixing and positioning. In addition, the adhesive tape is widely applied to automobile wire harnesses, and is often used for bundling wires, protecting the wires, making an insulating protective layer, absorbing sound and reducing noise, marking, fixing and the like in the automobile wire harnesses. In order to reduce noise in an automobile and improve comfort in the environment in the automobile, a sound absorbing function is generally given to the adhesive tape for an automobile. However, the existing sound-absorbing adhesive tape for automobiles can not meet the requirements on flame retardance, aging resistance, buffering and water resistance, and has the defects of low adhesive strength, poor sound absorption performance and insufficient tearing strength of products.

For example, chinese patent (CN 111378395A) discloses a foamed noise reduction sealing tape and a preparation method thereof, relating to the field of noise reduction. This foaming falls sealed sticky tape of making an uproar, foaming falls sealed sticky tape of making an uproar is three layer construction, is silicone oil paper, butyl film layer and foaming material layer in proper order, the foaming aperture on foaming material layer is at 0.01 ~ 0.5 mm. The butyl rubber layer adopts butyl rubber and polyisobutylene as raw materials, and the foaming material layer adopts polyurethane and polyolefin as raw materials, so that the foaming noise reduction sealing adhesive tape has the advantages of sound absorption, weather resistance, high and low temperature resistance, heat preservation, heat insulation, flame retardance, oil resistance and acid and alkali resistance, and has sealing, shock absorption and protection effects on the surface of an adherend. However, the adhesive tape has low adhesive strength, insufficient aging resistance, and poor permanent adhesion, and mechanical properties, heat resistance, and sound absorption properties are to be further improved.

Therefore, the automobile strong sound absorption fixing adhesive tape with remarkable sound absorption effect, high bonding strength, sufficient aging resistance, excellent permanent adhesion, heat resistance and mechanical property and the preparation method thereof are developed.

Disclosure of Invention

The invention mainly aims to provide a strong sound-absorbing fixing adhesive tape for an automobile, which has the advantages of obvious sound-absorbing effect, high bonding strength, enough ageing resistance, excellent permanent adhesion, heat resistance and mechanical property, and a preparation method thereof; the preparation method is simple and easy to implement, low in equipment dependence, low in energy consumption and capital investment, high in preparation effect and suitable for continuous large-scale production.

In order to achieve the above purpose, the invention provides a strong sound absorption fixing adhesive tape for an automobile, which is characterized by sequentially comprising a first release film layer, a first adhesive layer, a sound insulation functional layer, a second adhesive layer and a second release film layer from top to bottom; the sound insulation functional layer is prepared from the following raw materials in parts by weight: 80-90 parts of sulfonated polyphenylene sulfide sulfone, 8-15 parts of foaming agent, 6-9 parts of 2-acrylamido-2-methylpropanesulfonic acid, 2-4 parts of phosphorus pentoxide and 0.8-1.3 parts of polyphosphoric acid; the first adhesive layer and the second adhesive layer have the same components and independently comprise a component A and a component B respectively; wherein the component A is prepared from the following components in parts by weight: 60-80 parts of acrylic pressure-sensitive adhesive, 518-12 parts of novolac epoxy resin F, 2-4 parts of 1, 3-bis (ethylene oxide methyl) -5- (2-propenyl) -1,3, 5-triazine-2, 4,6(1H,3H,5H) -trione, 1-3 parts of trivinyl trimethyl cyclotrisilazane, 1-3 parts of 1-allyl-3-vinyl imidazole chloride salt, 0.5-1 part of photoinitiator, 5-8 parts of filler, 0.3-0.6 part of dicyandiamide and 10-20 parts of solvent; the component B comprises: 4-8 parts of Meso-tetramethyl-Meso-tetra-p-aminophenyl calix [4] pyrrole, 1-3 parts of 2, 2-bis [4- (4-aminophenoxy) phenyl ] -1,1,1,3,3, 3-hexafluoropropane and 7-10 parts of N, N-dimethylformamide; the mass ratio of the component A to the component B is (3-5) to 1.

Preferably, the first release film layer and the second release film layer are independently made of any one of a PE release film, a PET release film and an OPP release film; and a low-silicon release agent is coated on the release film.

Preferably, the sulfonated polyphenylene sulfide sulfone is sulfonated polyphenylene sulfide sulfone with the sulfonation degree of 15.7 percent; the source of the sulfonated polyphenylene sulfide sulfone is not particularly required, and in one embodiment of the invention, the sulfonated polyphenylene sulfide sulfone is prepared by the method of CN201810095561.2, which is the method of the invention patent example 9 in China.

Preferably, the foaming agent is at least one of barium azodicarboxylate, trihydrazinotriazine and p-toluenesulfonyl semicarbazide.

Preferably, the preparation method of the sound-insulating functional layer comprises the following steps: uniformly mixing the raw materials to obtain a mixed material, adding a polymerization inhibitor with the mass being 1% -3% of the mass of the mixed material, continuously uniformly mixing, adding the mixed material into a double-screw extruder, and sequentially performing extrusion, roller calendering, cooling solidification, ether washing and drying to obtain the sound insulation functional layer.

Preferably, the polymerization inhibitor is at least one of chloranil and 1, 4-naphthoquinone.

Preferably, the extrusion temperature is 320-.

Preferably, the acrylic pressure-sensitive adhesive is German Han high acrylic pressure-sensitive adhesive DURO-TAK 8604-2.

Preferably, the photoinitiator is at least one of benzoin dimethyl ether, benzoin ethyl ether, benzoin isopropyl ether and benzoin butyl ether.

Preferably, the filler is at least one of iron oxide, aluminum oxide and silicon micropowder; the particle size of the filler is 900-1100 meshes.

Preferably, the solvent is any one of ethyl acetate and acetone.

The second object of the present invention is to provide a method for preparing the strong sound absorption fixing tape for the automobile, which comprises the following steps: performing double-sided corona pretreatment on the sound insulation functional layer; then respectively coating the component A of the adhesive layer on the upper surface and the lower surface of the sound-insulating functional layer, standing for 2-3h at normal temperature, and then attaching the first release film layer and the second release film layer to prepare the adhesive tape; coating the adhesive layer B on the surface of an object to be pasted, peeling the release film layer from the adhesive tape, pasting the adhesive tape on the surface of the object to be pasted, drying, and irradiating for 30-40min under ultraviolet light of 220-260nm, thus obtaining the automobile strong sound absorption fixing adhesive tape.

Due to the application of the technical scheme, the invention has the following beneficial effects:

(1) the preparation method of the strong sound absorption fixing adhesive tape for the automobile, disclosed by the invention, is simple and feasible, low in equipment dependence, low in energy consumption and capital investment, high in preparation effect and suitable for continuous large-scale production.

(2) The strong sound absorption fixing adhesive tape for the automobile, disclosed by the invention, has the advantages that the sound absorption effect of the prepared adhesive tape is obvious, the bonding strength is high, the aging resistance is sufficient, the permanent viscosity, the heat resistance and the mechanical property are excellent, and the service life is long under the combined action of the reasonable selection of the structure and the components and the mutual matching.

(3) The invention discloses a strong sound absorption fixing adhesive tape for an automobile, wherein a sound insulation functional layer is prepared from the following raw materials in parts by weight: 80-90 parts of sulfonated polyphenylene sulfide sulfone, 8-15 parts of foaming agent, 6-9 parts of 2-acrylamide-2-methylpropanesulfonic acid, 2-4 parts of phosphorus pentoxide and 0.8-1.3 parts of polyphosphoric acid. The base material of the adhesive tape is sulfonated polyphenylene sulfide sulfone, so that the adhesive tape has the advantages of a polyphenylene sulfide sulfone resin material, the surface activity of the adhesive tape can be improved through a sulfonic anion structure introduced through sulfonation, the adhesion of the adhesive tape and an adhesive layer is improved, the adhesive tape can be connected with imidazole cations on vinyl imidazole chloride through ionic bonds, and the host-guest interaction can also occur through Meso-tetramethyl-Meso-tetra-p-aminophenyl cup [4] pyrrole. The sulfonic group on the 2-acrylamide-2-methylpropanesulfonic acid and a benzene ring on the sulfonated polyphenylene sulfide sulfone are generated under the catalytic action of phosphorus pentoxide and polyphosphoric acid, so that acrylamide groups are introduced to a molecular chain, and the unsaturated olefinic bond can generate free radical copolymerization with other monomers containing unsaturated olefinic bonds on an adhesive layer to form a three-dimensional network structure, so that the aging resistance, the mechanical property, the heat resistance and the adhesive strength are improved. The sound absorption effect is good through the foaming effect of the foaming agent and the synergistic effect of other components.

(4) The adhesive layer of the strong sound absorption fixing adhesive tape for the automobile is divided into A, B components, so that the storage stability is improved, the components are mutually influenced, the prepared adhesive tape has strong adhesive property and good holding viscosity, monomers containing unsaturated ethylenic bonds can generate copolymerization reaction under the action of an initiator to form an interpenetrating network structure, and all structural groups are mutually matched and act together, so that the aging resistance, the mechanical property, the heat resistance and the adhesive strength of the adhesive tape are further improved; meanwhile, epoxy groups on novolac epoxy resin F51 and 1, 3-bis (ethylene oxide methyl) -5- (2-propenyl) -1,3, 5-triazine-2, 4,6(1H,3H,5H) -trione can chemically react with amino groups on Meso-tetramethyl-Meso-tetra-p-aminophenyl calix [4] pyrrole and 2, 2-bis [4- (4-aminophenoxy) phenyl ] -1,1,1,3,3, 3-hexafluoropropane to form a second network structure, and the network structures exist simultaneously, so that the comprehensive performance and the performance stability of the material are effectively improved.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The Meso-tetramethyl-Meso-tetra-p-aminophenyl-calix [4] pyrrole may be the Meso-tetramethyl-Meso-tetra-p-aminophenyl-calix [4] pyrrole prepared by the method of reference "Guo Yong, Shao Shijun, He Li Jun, et al, Meso-tetramethyl-Meso-tetra-p-aminophenyl-calix [4] pyrrole and characterization [ J ] chemical reagent, 2002(6): 344-.

Example 1

The strong sound absorption fixing adhesive tape for the automobile is characterized by sequentially comprising a first release film layer, a first adhesive layer, a sound insulation functional layer, a second adhesive layer and a second release film layer from top to bottom; the sound insulation functional layer is prepared from the following raw materials in parts by weight: 80 parts of sulfonated polyphenylene sulfide sulfone, 8 parts of foaming agent, 6 parts of 2-acrylamide-2-methylpropanesulfonic acid, 2 parts of phosphorus pentoxide and 0.8 part of polyphosphoric acid; the first adhesive layer and the second adhesive layer have the same components and independently comprise a component A and a component B respectively; wherein the component A is prepared from the following components in parts by weight: 60 parts of acrylic pressure-sensitive adhesive, 518 parts of novolac epoxy resin F, 2-4 parts of 1, 3-bis (ethylene oxide methyl) -5- (2-propenyl) -1,3, 5-triazine-2, 4,6(1H,3H,5H) -trione, 1-3 parts of trivinyl trimethyl cyclotrisilazane, 1-3 parts of 1-allyl-3-vinyl imidazole chloride salt, 0.5-1 part of photoinitiator, 5 parts of filler, 0.3 part of dicyandiamide and 10 parts of solvent; the component B comprises: 4 parts of Meso-tetramethyl-Meso-tetra-p-aminobenzyl calix [4] pyrrole, 1 part of 2, 2-bis [4- (4-aminophenoxy) phenyl ] -1,1,1,3,3, 3-hexafluoropropane and 7 parts of N, N-dimethylformamide; the mass ratio of the component A to the component B is 3: 1.

The first release film layer and the second release film layer are mutually independent and made of PE release films; and a low-silicon release agent is coated on the release film.

The sulfonated polyphenylene sulfide sulfone is sulfonated polyphenylene sulfide sulfone with the sulfonation degree of 15.7 percent; the sulfonated polyphenylene sulfide sulfone is prepared by the method of CN201810095561.2 in the embodiment 9 of the Chinese patent invention; the foaming agent is barium azodicarboxylate.

The preparation method of the sound insulation functional layer comprises the following steps: uniformly mixing the raw materials to obtain a mixed material, adding a polymerization inhibitor with the mass being 1% of the mass of the mixed material, continuously uniformly mixing, adding the mixed material into a double-screw extruder, and sequentially performing extrusion, roller calendering, cooling solidification, ether washing and drying to obtain a sound insulation functional layer; the polymerization inhibitor is tetrachlorobenzoquinone; the extrusion temperature was 320-345 ℃.

The acrylic pressure-sensitive adhesive is a German Han high acrylic pressure-sensitive adhesive DURO-TAK 8604-2; the photoinitiator is benzoin dimethyl ether; the filler is ferric oxide; the particle size of the filler is 900 meshes; the solvent is ethyl acetate.

The preparation method of the strong sound absorption fixing adhesive tape for the automobile is characterized by comprising the following steps of: performing double-sided corona pretreatment on the sound insulation functional layer; then respectively coating the component A of the adhesive layer on the upper surface and the lower surface of the sound-insulating functional layer, standing for 2 hours at normal temperature, and then attaching the first release film layer and the second release film layer to prepare the adhesive tape; coating the adhesive layer B on the surface of an object to be pasted, peeling off the release film layer from the adhesive tape, pasting the adhesive tape on the surface of the object to be pasted, drying, and irradiating for 30min under ultraviolet light of 220nm to obtain the automotive strong sound absorption fixing adhesive tape.

Example 2

The strong sound absorption fixing adhesive tape for the automobile is characterized by sequentially comprising a first release film layer, a first adhesive layer, a sound insulation functional layer, a second adhesive layer and a second release film layer from top to bottom; the sound insulation functional layer is prepared from the following raw materials in parts by weight: 82 parts of sulfonated polyphenylene sulfide sulfone, 10 parts of foaming agent, 7 parts of 2-acrylamido-2-methylpropanesulfonic acid, 2.5 parts of phosphorus pentoxide and 0.9 part of polyphosphoric acid; the first adhesive layer and the second adhesive layer have the same components and independently comprise a component A and a component B respectively; wherein the component A is prepared from the following components in parts by weight: 65 parts of acrylic pressure-sensitive adhesive, 519 parts of novolac epoxy resin, 2.5 parts of 1, 3-bis (ethylene oxide methyl) -5- (2-propenyl) -1,3, 5-triazine-2, 4,6(1H,3H,5H) -trione, 1.5 parts of trivinyl trimethyl cyclotrisilazane, 1.5 parts of 1-allyl-3-vinyl imidazole chloride salt, 0.7 part of photoinitiator, 6 parts of filler, 0.4 part of dicyandiamide and 12 parts of solvent; the component B comprises: 5 parts of Meso-tetramethyl-Meso-tetra-p-aminophenyl calix [4] pyrrole, 1.5 parts of 2, 2-bis [4- (4-aminophenoxy) phenyl ] -1,1,1,3,3, 3-hexafluoropropane and 8 parts of N, N-dimethylformamide; the mass ratio of the component A to the component B is 3.5: 1.

The first release film layer and the second release film layer are mutually independent and made of PET release films; and a low-silicon release agent is coated on the release film.

The sulfonated polyphenylene sulfide sulfone is prepared by the method of CN201810095561.2 in the embodiment 9 of the Chinese patent invention; the foaming agent is trihydrazinotriazine.

The preparation method of the sound insulation functional layer comprises the following steps: uniformly mixing the raw materials to obtain a mixed material, adding a polymerization inhibitor with the mass being 1.5% of the mass of the mixed material, continuously uniformly mixing, adding the mixed material into a double-screw extruder, and sequentially performing extrusion, roller calendering, cooling solidification, ether washing and drying to obtain a sound insulation functional layer; the polymerization inhibitor is 1, 4-naphthoquinone; the extrusion temperature was 335 ℃.

The acrylic pressure-sensitive adhesive is a German Han high acrylic pressure-sensitive adhesive DURO-TAK 8604-2; the photoinitiator is benzoin ethyl ether; the filler is alumina; the particle size of the filler is 950 meshes; the solvent is acetone.

The preparation method of the strong sound absorption fixing adhesive tape for the automobile is characterized by comprising the following steps of: performing double-sided corona pretreatment on the sound insulation functional layer; then respectively coating the component A of the adhesive layer on the upper surface and the lower surface of the sound-insulating functional layer, standing for 2.3 hours at normal temperature, and then attaching the first release film layer and the second release film layer to prepare the adhesive tape; coating the adhesive layer B on the surface of an object to be pasted, peeling off the release film layer from the adhesive tape, pasting the adhesive tape on the surface of the object to be pasted, drying, and irradiating for 33min under 230nm ultraviolet light to obtain the automotive strong sound absorption fixing adhesive tape.

Example 3

The strong sound absorption fixing adhesive tape for the automobile is characterized by sequentially comprising a first release film layer, a first adhesive layer, a sound insulation functional layer, a second adhesive layer and a second release film layer from top to bottom; the sound insulation functional layer is prepared from the following raw materials in parts by weight: 85 parts of sulfonated polyphenylene sulfide sulfone, 12 parts of foaming agent, 7.5 parts of 2-acrylamido-2-methylpropanesulfonic acid, 3 parts of phosphorus pentoxide and 1 part of polyphosphoric acid; the first adhesive layer and the second adhesive layer have the same components and independently comprise a component A and a component B respectively; wherein the component A is prepared from the following components in parts by weight: 60-80 parts of acrylic pressure-sensitive adhesive, 5110 parts of novolac epoxy resin F, 3 parts of 1, 3-bis (ethylene oxide methyl) -5- (2-propenyl) -1,3, 5-triazine-2, 4,6(1H,3H,5H) -trione, 2 parts of trivinyl trimethyl cyclotrisilazane, 2 parts of 1-allyl-3-vinyl imidazole chloride salt, 0.8 part of photoinitiator, 6.5 parts of filler, 0.45 part of dicyandiamide and 15 parts of solvent; the component B comprises: 6 parts of Meso-tetramethyl-Meso-tetra-p-aminophenyl calix [4] pyrrole, 2 parts of 2, 2-bis [4- (4-aminophenoxy) phenyl ] -1,1,1,3,3, 3-hexafluoropropane and 8.5 parts of N, N-dimethylformamide; the mass ratio of the component A to the component B is 4: 1.

The first release film layer and the second release film layer are mutually independent and made of OPP release films; coating a low-silicon release agent on the release film; the sulfonated polyphenylene sulfide sulfone is prepared by the method of CN201810095561.2 in the embodiment 9 of the Chinese patent invention; the foaming agent is p-toluenesulfonyl semicarbazide.

The preparation method of the sound insulation functional layer comprises the following steps: uniformly mixing the raw materials to obtain a mixed material, adding a polymerization inhibitor with the mass being 2% of the mass of the mixed material, continuously uniformly mixing, adding the mixed material into a double-screw extruder, and sequentially performing extrusion, roller calendering, cooling solidification, ether washing and drying to obtain a sound insulation functional layer; the polymerization inhibitor is tetrachlorobenzoquinone; the extrusion temperature was 335 ℃.

The acrylic pressure-sensitive adhesive is a German Han high acrylic pressure-sensitive adhesive DURO-TAK 8604-2; the photoinitiator is benzoin isopropyl ether; the filler is silicon micropowder; the particle size of the filler is 1000 meshes; the solvent is ethyl acetate.

The preparation method of the strong sound absorption fixing adhesive tape for the automobile is characterized by comprising the following steps of: performing double-sided corona pretreatment on the sound insulation functional layer; then respectively coating the component A of the adhesive layer on the upper surface and the lower surface of the sound-insulating functional layer, standing for 2.6 hours at normal temperature, and then attaching the first release film layer and the second release film layer to prepare the adhesive tape; coating the adhesive layer B on the surface of an object to be pasted, peeling off the release film layer from the adhesive tape, pasting the adhesive tape on the surface of the object to be pasted, drying, and irradiating for 35min under 240nm ultraviolet light to obtain the automotive strong sound absorption fixing adhesive tape.

Example 4

The strong sound absorption fixing adhesive tape for the automobile is characterized by sequentially comprising a first release film layer, a first adhesive layer, a sound insulation functional layer, a second adhesive layer and a second release film layer from top to bottom; the sound insulation functional layer is prepared from the following raw materials in parts by weight: 88 parts of sulfonated polyphenylene sulfide sulfone, 14 parts of foaming agent, 8.5 parts of 2-acrylamido-2-methylpropanesulfonic acid, 3.5 parts of phosphorus pentoxide and 1.2 parts of polyphosphoric acid; the first adhesive layer and the second adhesive layer have the same components and independently comprise a component A and a component B respectively; wherein the component A is prepared from the following components in parts by weight: 75 parts of acrylic pressure-sensitive adhesive, 5111 parts of novolac epoxy resin F, 3.5 parts of 1, 3-bis (ethylene oxide methyl) -5- (2-propenyl) -1,3, 5-triazine-2, 4,6(1H,3H,5H) -trione, 2.5 parts of trivinyl trimethyl cyclotrisilazane, 2.5 parts of 1-allyl-3-vinyl imidazole chloride salt, 0.9 part of photoinitiator, 7.5 parts of filler, 0.55 part of dicyandiamide and 18 parts of solvent; the component B comprises: 7.5 parts of Meso-tetramethyl-Meso-tetra-p-aminophenyl calix [4] pyrrole, 2.5 parts of 2, 2-bis [4- (4-aminophenoxy) phenyl ] -1,1,1,3,3, 3-hexafluoropropane and 9 parts of N, N-dimethylformamide; the mass ratio of the component A to the component B is 4.5: 1.

The first release film layer and the second release film layer are mutually independent and made of PE release films; coating a low-silicon release agent on the release film; the sulfonated polyphenylene sulfide sulfone is prepared by the method of CN201810095561.2 in the embodiment 9 of the Chinese patent invention; the foaming agent is a mixture formed by mixing barium azodicarboxylate, trihydrazinotriazine and p-toluenesulfonyl semicarbazide according to the mass ratio of 1:2: 3.

The preparation method of the sound insulation functional layer comprises the following steps: uniformly mixing the raw materials to obtain a mixed material, adding a polymerization inhibitor with the mass being 2.5% of the mass of the mixed material, continuously uniformly mixing, adding the mixed material into a double-screw extruder, and sequentially performing extrusion, roller calendering, cooling solidification, ether washing and drying to obtain a sound insulation functional layer; the polymerization inhibitor is tetrachlorobenzoquinone; the extrusion temperature was 342 ℃.

The acrylic pressure-sensitive adhesive is a German Han high acrylic pressure-sensitive adhesive DURO-TAK 8604-2; the photoinitiator is a mixture formed by mixing benzoin dimethyl ether, benzoin ethyl ether, benzoin isopropyl ether and benzoin butyl ether according to the mass ratio of 1:1:2: 2; the filler is a mixture formed by mixing iron oxide, aluminum oxide and silicon micropowder according to the mass ratio of 2:3: 5; the particle size of the filler is 1050 meshes; the solvent is ethyl acetate.

The preparation method of the strong sound absorption fixing adhesive tape for the automobile is characterized by comprising the following steps of: performing double-sided corona pretreatment on the sound insulation functional layer; then respectively coating the component A of the adhesive layer on the upper surface and the lower surface of the sound-insulating functional layer, standing for 2.8 hours at normal temperature, and then attaching the first release film layer and the second release film layer to prepare the adhesive tape; coating the adhesive layer B on the surface of an object to be pasted, peeling the adhesive tape from the release film layer, pasting the adhesive tape on the surface of the object to be pasted, drying, and irradiating for 38min under 250nm ultraviolet light to obtain the automotive strong sound absorption fixing adhesive tape.

Example 5

The strong sound absorption fixing adhesive tape for the automobile is characterized by sequentially comprising a first release film layer, a first adhesive layer, a sound insulation functional layer, a second adhesive layer and a second release film layer from top to bottom; the sound insulation functional layer is prepared from the following raw materials in parts by weight: 90 parts of sulfonated polyphenylene sulfide sulfone, 15 parts of foaming agent, 9 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4 parts of phosphorus pentoxide and 1.3 parts of polyphosphoric acid; the first adhesive layer and the second adhesive layer have the same components and independently comprise a component A and a component B respectively; wherein the component A is prepared from the following components in parts by weight: 80 parts of acrylic pressure-sensitive adhesive, 5112 parts of novolac epoxy resin F, 4 parts of 1, 3-bis (oxiranylmethyl) -5- (2-propenyl) -1,3, 5-triazine-2, 4,6(1H,3H,5H) -trione, 3 parts of trivinyltrimethylcyclotrisilazane, 3 parts of 1-allyl-3-vinylimidazole chloride, 1 part of photoinitiator, 8 parts of filler, 0.6 part of dicyandiamide and 20 parts of solvent; the component B comprises: 8 parts of Meso-tetramethyl-Meso-tetra-p-aminobenzyl calix [4] pyrrole, 3 parts of 2, 2-bis [4- (4-aminophenoxy) phenyl ] -1,1,1,3,3, 3-hexafluoropropane and 10 parts of N, N-dimethylformamide; the mass ratio of the component A to the component B is 5: 1.

The first release film layer and the second release film layer are mutually independent and made of PE release films; coating a low-silicon release agent on the release film; the sulfonated polyphenylene sulfide sulfone is prepared by the method of CN201810095561.2 in the embodiment 9 of the Chinese patent invention; the foaming agent is trihydrazinotriazine.

The preparation method of the sound insulation functional layer comprises the following steps: uniformly mixing the raw materials to obtain a mixed material, adding a polymerization inhibitor with the mass being 2.5% of the mass of the mixed material, continuously uniformly mixing, adding the mixed material into a double-screw extruder, and sequentially performing extrusion, roller calendering, cooling solidification, ether washing and drying to obtain a sound insulation functional layer; the polymerization inhibitor is 1, 4-naphthoquinone; the extrusion temperature was 345 ℃.

The acrylic pressure-sensitive adhesive is a German Han high acrylic pressure-sensitive adhesive DURO-TAK 8604-2; the photoinitiator is benzoin butyl ether; the filler is ferric oxide; the particle size of the filler is 1100 meshes; the solvent is ethyl acetate.

The preparation method of the strong sound absorption fixing adhesive tape for the automobile is characterized by comprising the following steps of: performing double-sided corona pretreatment on the sound insulation functional layer; then respectively coating the component A of the adhesive layer on the upper surface and the lower surface of the sound-insulating functional layer, standing for 3 hours at normal temperature, and then attaching the first release film layer and the second release film layer to prepare the adhesive tape; coating the adhesive layer B on the surface of an object to be pasted, peeling off the release film layer from the adhesive tape, pasting the adhesive tape on the surface of the object to be pasted, drying, and irradiating for 40min under ultraviolet light of 260nm to obtain the strong sound absorption fixing adhesive tape for the automobile.

Comparative example 1

The present invention provides a strong sound-absorbing fixing tape for automobiles, which is similar to example 1, except that polyphenylene sulfide sulfone is used instead of sulfonated polyphenylene sulfide sulfone.

Comparative example 2

The present invention provides a strong sound-absorbing fixing tape for automobiles, which is similar to example 1, except that 2-acrylamido-2-methylpropanesulfonic acid is not added.

Comparative example 3

The present invention provides a strong sound-absorbing fixing tape for automobiles, which is similar to example 1, except that 1-allyl-3-vinylimidazole chloride salt is not added.

Comparative example 4

The present invention provides a strong sound-absorbing fixing tape for automobiles, which is similar to example 1, except that Meso-tetramethyl-Meso-tetra-p-aminophenyl [4] pyrrole is not added.

In order to further illustrate the beneficial technical effects of the automotive strong sound absorbing fixing adhesive tapes prepared in the embodiments of the invention, the automotive strong sound absorbing fixing adhesive tapes prepared in the embodiments 1 to 5 and the comparative examples 1 to 4 are subjected to relevant performance tests according to the current national standard of China, and the test results are shown in table 1; the tack-holding property is measured as the retention of tack after 40 hours at 80 ℃ after tack.

As can be seen from the data in table 1, the strongly sound-absorbing fastening tape for automobiles prepared in the examples of the present invention has excellent adhesive property, holding property and sound insulation effect, which are the result of the synergistic effect of the components and structures.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.