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CN-121975449-A - High-impact PET double faced adhesive tape and preparation method thereof

CN121975449ACN 121975449 ACN121975449 ACN 121975449ACN-121975449-A

Abstract

The application provides a high-impact PET double faced adhesive tape and a preparation method thereof, and relates to the technical field of adhesive materials, wherein the double faced adhesive tape comprises, by weight, 48-63% of an acrylic ester soft monomer, 17-19% of an acrylic ester hard monomer, 8-18% of modified rubber, 8-12% of tackifying resin, 0.8-1.8% of filler, 0.17-1.2% of UV photoinitiator, 0.04-0.09% of cross-linking agent and 0.001-0.003% of molecular chain transfer agent. The high-impact PET double faced adhesive tape and the preparation method provided by the application have the advantages of ensuring the high strength of the surface adhesive tape and enhancing the buffering performance of the surface adhesive tape.

Inventors

  • YANG ZHITONG

Assignees

  • 安徽富印新材料股份有限公司

Dates

Publication Date
20260505
Application Date
20260122

Claims (10)

  1. 1. The high-impact PET double-sided adhesive tape is characterized by comprising, by weight, 48-63% of an acrylic ester soft monomer, 17-19% of an acrylic ester hard monomer, 8-18% of modified rubber, 8-12% of a tackifying resin, 0.8-1.8% of a filler, 0.17-1.2% of a UV photoinitiator, 0.04-0.09% of a cross-linking agent and 0.001-0.003% of a molecular chain transfer agent.
  2. 2. The high impact PET double sided tape of claim 1, wherein the acrylate soft monomer comprises one or more of butyl acrylate, isooctyl acrylate, ethyl acrylate, isobutyl acrylate, hydroxypropyl acrylate.
  3. 3. The high impact PET double sided tape of claim 1, wherein the acrylate hard monomer comprises one or more of methyl methacrylate, methyl acrylate, ethyl methacrylate, hydroxyethyl methacrylate.
  4. 4. The high impact PET double sided tape of claim 1, wherein the modified rubber comprises one or more of an acrylate modified nitrile rubber, a hydrogenated nitrile rubber modifier, a styrene-butadiene-styrene block copolymer modified rubber, a polyurethane modified acrylate rubber, a silane modified polyether rubber.
  5. 5. The high impact PET double sided tape of claim 1, wherein the tackifying resin comprises one or more of terpene phenolic resins, C5/C9 petroleum resins, rosin glycerol esters, hydrogenated rosin resins, polyterpene resins.
  6. 6. The high impact PET double sided tape of claim 1, wherein the filler comprises one or more of hollow glass beads, solid glass beads, nano silica, organobentonite.
  7. 7. The high impact PET double sided tape of claim 1, wherein the UV photoinitiator comprises one or more of 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2-hydroxy-2-methyl-1-phenyl-1-propanone, 1-hydroxycyclohexyl phenyl ketone, benzophenone.
  8. 8. The high impact PET double sided tape of claim 1, wherein the cross-linking agent comprises one or more of trimethylolpropane triacrylate, isophorone diisocyanate, epoxypropyl methacrylate, gamma-glycidylether oxypropyl trimethoxysilane.
  9. 9. The high impact PET double sided tape of claim 1, wherein the molecular chain transfer agent comprises one or more of dodecyl mercaptan, methyl 3-mercaptopropionate, alpha-methylstyrene dimer.
  10. 10. A method for preparing the high impact PET double sided tape according to any one of claims 1 to 7, comprising the steps of: S1, weighing an acrylic ester soft monomer, an acrylic ester hard monomer, a molecular chain transfer agent and a half of UV photoinitiator according to weight percentage, pouring the mixture into a reactor, uniformly mixing, introducing nitrogen for protection, starting a UV light source to enable the reaction temperature to be 40-45 ℃, and stopping the reaction to obtain a prepolymer; S2, weighing the cross-linking agent, the tackifying resin, the modified rubber, the filler and the other half of the UV photoinitiator according to the weight percentage, adding the substances into the prepolymer prepared in the step S1, and stirring until the substances are uniformly mixed; and S3, coating the material prepared in the step S2 on the front and back sides of the black PET substrate after vacuumizing and defoaming, wherein the coating thickness is 75 mu m, and preparing the high-impact-resistance PET substrate double faced adhesive tape after ultraviolet irradiation and solidification.

Description

High-impact PET double faced adhesive tape and preparation method thereof Technical Field The application relates to the technical field of adhesive materials, in particular to a high-impact PET double faced adhesive tape and a preparation method thereof. Background The high-impact PET double faced adhesive tape is mainly applied between a middle frame and an object to be pasted of electronic products such as a flat plate and a mobile phone, plays a role in adhering and fixing the back plate and the middle frame, and reduces impact influence of complete machine falling on the complete machine. The double faced adhesive tape applied to the lamination of a back plate and a middle frame in the market at present consists of multiple materials and structures, such as PE foam base materials, acrylic foam base materials, PET base materials, double faced adhesive tape products without base material composite structures and the like, and most of the double faced adhesive tape products are composed of structure collocation surface adhesive tapes with strong buffering property, and a small part of the double faced adhesive tape products provide certain buffering property through raw material mixing. The PET substrate double faced adhesive tape has high overall strength based on the high strength of the substrate, but has slightly poorer impact resistance than products with other structures, and the cushioning property of the double faced adhesive tape needs to be increased. In view of the above, improvements are needed. Disclosure of Invention The application aims to provide a high-impact PET double-sided adhesive tape and a preparation method thereof, which have the advantages of ensuring the high strength of the surface adhesive tape and enhancing the buffering performance of the surface adhesive tape. In a first aspect, the application provides a high-impact PET double-sided adhesive tape, which has the following technical scheme: The weight percentage of the modified acrylic resin comprises 48-63% of acrylic soft monomer, 17-19% of acrylic hard monomer, 8-18% of modified rubber, 8-12% of tackifying resin, 0.8-1.8% of filler, 0.17-1.2% of UV photoinitiator, 0.04-0.09% of cross-linking agent and 0.001-0.003% of molecular chain transfer agent. Further, in the present application, the acrylic acid ester soft monomer includes one or more of butyl acrylate, isooctyl acrylate, ethyl acrylate, isobutyl acrylate, hydroxypropyl acrylate. Further, in the present application, the acrylate hard monomer includes one or more of methyl methacrylate, methyl acrylate, ethyl methacrylate, and hydroxyethyl methacrylate. Further, in the present application, the modified rubber includes one or more of an acrylate modified nitrile rubber, a hydrogenated nitrile rubber modifier, a styrene-butadiene-styrene block copolymer modified rubber, a urethane modified acrylate rubber, a silane modified polyether rubber. Further, in the present application, the tackifying resin includes one or more of terpene phenolic resins, C5/C9 petroleum resins, rosin glycerol esters, hydrogenated rosin resins, polyterpene resins. Further, in the application, the filler comprises one or more of hollow glass beads, solid glass beads, nano silica and organic bentonite. Further, in the present application, the UV photoinitiator includes one or more of 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2-hydroxy-2-methyl-1-phenyl-1-propanone, 1-hydroxycyclohexyl phenyl ketone, benzophenone. Further, in the present application, the crosslinking agent includes one or more of trimethylolpropane triacrylate, isophorone diisocyanate, epoxypropyl methacrylate, gamma-glycidylether oxypropyl trimethoxysilane. Further, in the present application, the molecular chain transfer agent includes one or more of dodecyl mercaptan, methyl 3-mercaptopropionate, and α -methylstyrene dimer. In a second aspect, the application also provides a preparation method of the high-impact PET double faced adhesive tape, which comprises the following steps: S1, weighing an acrylic ester soft monomer, an acrylic ester hard monomer, a molecular chain transfer agent and a half of UV photoinitiator according to weight percentage, pouring the mixture into a reactor, uniformly mixing, introducing nitrogen for protection, starting a UV light source to enable the reaction temperature to be 40-45 ℃, and stopping the reaction to obtain a prepolymer; S2, weighing the cross-linking agent, the tackifying resin, the modified rubber, the filler and the other half of the UV photoinitiator according to the weight percentage, adding the substances into the prepolymer prepared in the step S1, and stirring until the substances are uniformly mixed; and S3, coating the material prepared in the step S2 on the front and back sides of the black PET substrate after vacuumizing and defoaming, wherein the coating thickness is 75 mu m, and preparing the high-impact-resistance PET substrate double faced adhesive tape after ult