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Adhesive, preparation method thereof and adhesive tape

A technology of adhesives and initiators, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of weakened interaction, strong interaction force, and reduced adhesive performance, so as to ensure adhesive performance , good bonding performance, avoid the effect of seepage

Active Publication Date: 2021-03-16
THE CHINESE UNIV OF HONG KONG SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned interactions are easily weakened by the interference of water, because water can act as a hydrogen donor / acceptor or ligand to greatly weaken the above-mentioned interactions
In addition, it is difficult for low surface energy substrates to form a strong interaction with the above non-covalent bonds, so the adhesive is often prone to failure on the surface of the substrate to be bonded, which greatly reduces the adhesive performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Mix 2.0g of ionic liquid monomer 1-vinyl-3-butylimidazole bistrifluoromethanesulfonimide salt and 9.4mg of 1-hydroxycyclohexyl phenyl ketone evenly, and apply it on the tape after vacuum degassing for 30s. The substrate with the mold is then cured by UV light. Then poly-1-vinyl-3-butylimidazole bistrifluoromethanesulfonimide salt was dissolved in 5 mL of acetone with 4.0 g of hexafluorobutyl acrylate, 4.0 g of methyl methacrylate and 116 mg of 1-hydroxycyclohexylphenyl The ketone is mixed evenly, and the solvent is volatilized after being evenly coated on the substrate, and then cured by ultraviolet light. The light curing conditions are set as follows: the light source power density is 50mW / cm 2 , time 1h.

Embodiment 2

[0054] 1.2g of hexafluorobutyl acrylate, 1.2g of methyl methacrylate and 35mg of 1-hydroxycyclohexyl phenyl ketone were mixed evenly, and after vacuum degassing for 30s, they were coated on a substrate with a mold and then cured by ultraviolet light. The copolymer synthesized above was dissolved in 5 mL of acetone and mixed with 1.2 g of ionic liquid monomer 1-vinyl-3-butylimidazole bistrifluoromethanesulfonimide salt and 5.7 mg of 1-hydroxycyclohexyl phenyl ketone , and then evenly coated on the substrate to evaporate the solvent, followed by UV curing. The light curing conditions are set as follows: the light source power density is 50mW / cm 2 , time 1h.

Embodiment 3

[0056] 0.3g of ionic liquid monomer 1-vinyl-3-butylimidazole bistrifluoromethanesulfonimide salt, 0.7g of hexafluorobutyl acrylate and 7.5mg of 1-hydroxycyclohexyl phenyl ketone were mixed uniformly and vacuum degassed After 30s it is applied to the substrate with the mold and then cured by UV light. The UV curing conditions are set as follows: the power density of the light source is 50mW / cm 2 , time 1h.

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Abstract

The invention provides an adhesive, a preparation method thereof and an adhesive tape. The adhesive is prepared from the following raw materials in parts by weight: 10-70 parts of monomer containing trifluoromethyl functional groups, 10-70 parts of an imidazole ionic liquid compound and 1-5 parts of an initiator. The preparation method of the adhesive comprises the following steps of: mixing the raw materials, and reacting to obtain the adhesive. The adhesive tape comprises a base material and the adhesive arranged on the surface of the base material. The adhesive provided by the invention isan adhesive system constructed by depending on an ionic liquid, and the cohesion of the adhesive can be improved by utilizing the ionic dipole interaction between polymer chains and the ionic liquid or between the chains; meanwhile, due to the introduction of the ionic liquid, the adhesive force with different base materials is greatly improved, and particularly, the adhesive has relatively good adhesive property for a low-surface-energy base material; and the adhesive has high transparency and relatively good water resistance and weather resistance.

Description

technical field [0001] The invention relates to the field of bonding materials, in particular to an adhesive, a preparation method thereof and an adhesive tape. Background technique [0002] Adhesives are expected to gradually replace industrial connection methods such as welding and mechanical fastening due to their high bonding strength, light weight, and good flexibility. In recent years, its share in the fields of automobile assembly, electronic devices, packaging and medical treatment has also gradually expanded. [0003] The non-covalent bond interactions that the adhesion between traditional adhesives and substrates usually depend on include hydrogen bonds, ionic bonds, dipole-dipole interactions, host-guest interactions, etc. The failure of the adhesive system is usually divided into the following three types: interfacial failure, cohesive failure and mixed failure. The above-mentioned interactions are easily disturbed by water and greatly weakened, because water c...

Claims

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Application Information

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IPC IPC(8): C09J151/00C09J133/16C08F271/02C08F220/24C08F220/14C08F2/48C08F265/04C08F226/06C08F222/20C09J7/30C09J7/20
CPCC09J151/003C08F271/02C08F2/48C08F265/04C09J139/04C09J133/16C08F220/14C08F220/24C09J7/30C09J7/20C09J2451/00C09J2433/00C08F226/06C08F222/1063
Inventor 朱世平黄帅帅张祺明小庆
Owner THE CHINESE UNIV OF HONG KONG SHENZHEN
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