Soft hot melt adhesive containing rosin

Abstract

The invention discloses a soft hot melt adhesive containing rosin. The hot melt adhesive is prepared from the following raw materials in parts by weight: 45-50 parts of EVA, 10-20 parts of modified tackifying resin, 1-2 parts of dodecyl trimethyl ammonium chloride, 40-55 parts of hydrotalcite powder, 1-2 parts of an antioxidant RD, 1-5 parts of dimethyl aminopropyl amine, 3-5 parts of polypropylene adipate, 5-10 parts of diatomite, 10-13 parts of rosin, 20-30 parts of alkyl phenolic resin, 1-2 parts of methyl methacrylate and 1-2 parts of n-octyl acrylate. The hot melt adhesive contains intercalated modified rosin, so that the mechanical property of rosin can be improved, the thermal deformation temperature can be increased, and the water absorptivity is low; when the intercalated modified rosin is utilized for preparation of the hot melt adhesive, the compatibility of all the raw materials can be improved, the viscosity and water resistance of the hot melt adhesive can be improved, and thus the prepared hot melt adhesive can be soft.

Description

technical field [0001] The invention belongs to the field of adhesives, in particular to a soft hot-melt adhesive containing rosin. 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 tackifiers are polymers with small molecular w...

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.