High-viscosity flame-retardant environmentally-friendly pressure-sensitive adhesive and preparation method thereof, and pressure-sensitive adhesive film preparation method

Abstract

The invention discloses a high-viscosity flame-retardant environmentally-friendly pressure-sensitive adhesive and a preparation method thereof, and a pressure-sensitive adhesive film preparation method, wherein the pressure-sensitive adhesive comprises: 5-10 parts of an acrylate hard monomer, 15-25 parts of an acrylate soft monomer, 2-5 parts of an acrylate functional monomer, 5-10 parts of a phosphorus-containing active monomer, 0.5-2 parts of an initiator, 30-40 parts of an organic solvent, 10-20 parts of an efficient composite flame retardant and 0.5-2 parts of a curing agent. According tothe invention, the pressure-sensitive adhesive is prepared by a chemical synthesis and physical compounding method; and the pressure-sensitive adhesive polymer with high adhesion and a certain flame-retardant effect is synthesized by selecting the quantitative acrylate monomers and the phosphorus-containing functional monomer with flame-retardant effect, and various environmentally-friendly efficient flame retardants are added in the later period of synthesis, so that the flame-retardant effect is improved through the synergistic interaction mechanism, the pressure-sensitive adhesive has characteristics of high adhesiveness, high-temperature persistent adhesivity and remarkable flame-retardant effect, the flame-retardant grade reaches the Vo grade, and the processing requirements of electronic industry for fixing, bonding and the like are met.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a high-viscosity flame-retardant and environment-friendly pressure-sensitive adhesive, a preparation method thereof, and a preparation method of a pressure-sensitive adhesive film. Background technique [0002] Pressure-sensitive adhesives are pressure-sensitive adhesives. Pressure-sensitive adhesives are high-molecular polymers that can be firmly combined with adherends without the use of solvents, heat or other means. They are widely used in Electronics, electrical appliances, automobiles, machinery, aerospace, light industry, medical care, family life and many other fields, but because pressure-sensitive adhesives are mostly acrylic polymers, they are extremely flammable and easily bring safety hazards, which limits their application range ; [0003] In the invention patent with the patent application number 201410109500.9 titled a halogen-free flame-retardant pressure-sensitive adhe...

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Problems solved by technology

[0002] Pressure-sensitive adhesives are pressure-sensitive adhesives. Pressure-sensitive adhesives are high-molecular polymers that can be firmly combined with adherends without the use of solvents, heat or other means. They are widely used in Electronics, electrical appliances, automobiles, machinery, aerospace, light industry, medical care, family life and many other fields, but because pressure-sensitive adhesives are mostly acrylic polymers, they are extremely flammable and easily bring safety hazards, which limits their application range ;

[0003] In the invention patent with the patent application number 201410109500.9 titled a halogen-free flame-retardant pressure-sensitive adhesive and its preparation method, it is prepared by physically mixing a pressure-sensitive adhesive and a flame retardant. The flame retardant adhesives of traditional Chinese medicines often have insufficient cohesive strength and poor stickiness under high temperature conditions; while the patent application number is 201710760770.X, which is called a flame retardant acrylate pressure sensitive adhesive for cold lamination film and its preparation In the invention patent of , it prepared a flame-retardant pressure-sensitive adhesive by introducing phosphorus-containing flame-retardant monomers during the polymerization process, but the flame-retardant effect of the pressure-sensitive adhesive was not ideal; the patent application number is 201310586418. In the invention patent of a hot-melt pressure-sensitive adhesive for flame-retardant waterproof sealing and its preparation method, because the pressure-sensitive adhesive contains decabromodiphenyl ether flame retardant, it cannot meet the halogen limit standard and is not environmentally friendly;

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