Good-liquidity harmful-gas-free environmentally-friendly hot melt adhesive

Abstract

The invention discloses a good-liquidity harmful-gas-free environmentally-friendly hot melt adhesive which is prepared from the following raw materials in parts by weight: 35-45 parts of EVA, 1-2 parts of dodecyl trimethyl ammonium chloride, 10-15 parts of nano fly ash, 10-20 parts of kieselguhr, 1-3 parts of tetraethylenepentamine, 4-8 parts of polycarbonate, 5-8 parts of starch, 0.1-0.5 part of benzoyl peroxide, 10-15 parts of octyl-phenolic curing resin, 1-2 parts of an anti-aging agent NBC, 1-2 parts of sodium polyacrylate, 10-18 parts of silicone rubber, 3-9 parts of phenolic resin and 10-20 parts of modified tackifying resin. According to the invention, resin and additives are reasonably compounded, so that the hot melt adhesive is good in liquidity, and high in softness and viscidity; through intercalated modifying, the mechanical property of rubber can be improved, thermal deformation temperature is increased, and water absorption is low, and thus when the rubber is used for preparing the hot melt adhesive, compatibility of all raw materials of the hot melt adhesive can be increased and viscosity and water resistance are improved.

Description

technical field [0001] The invention belongs to the field of adhesives, in particular to an environment-friendly hot melt adhesive with good fluidity and no harmful gas. Background technique [0002] EVA hot melt adhesive is formulated from EVA resin, tackifier, plasticizer, antioxidant, filler, etc. In today's society, EVA hot melt adhesives are widely used and used in the largest amount. It has excellent bonding performance, almost has thermal adhesion to various materials; excellent electrical properties; and its low melt viscosity, convenient sizing; good compatibility with other compounding agents, etc. EVA hot melt adhesives have been widely used in many fields such as book binding, food packaging, plastic bonding, ceramic repairing, mounting, clothing, shoes and hats molding, automobiles and building materials. Since EVA resin is a thermoplastic resin, it has limited high and low temperature resistance and low softening point, and most of the main auxiliary tackifie...

AI Technical Summary

Problems solved by technology

Since EVA resin is a thermoplastic resin, it has limited high and low temperature resistance and low softening point, and most of the main auxiliary tackifiers are polymers with small molecular weights, which only reduce the melt viscosity and improve the wettability and initial strength. The role of stickiness, itself is not resistant to high and low temperature, resulting in the shortcomings of EVA hot melt adhesive not resistant to high and low temperature; at the same time, EVA hot melt adhesive also has low bonding performance, not resistant to fat oil, easy to produce skinning and not suitable for large Disadvantages such as area coating and adhesion

[0003] At present, with the rapid development of the PET industry, the amount of discarded PET has also increased, which has brought serious pollution to the environment.