Waterproof hot melt adhesive and preparation method thereof

Abstract

The invention discloses a waterproof hot melt adhesive and a preparation method thereof. The waterproof hot melt adhesive is composed of the following raw materials by weight part: 50-60 of an ethylene-vinyl acetate copolymer, 20-30 of microcrystalline wax, 10-15 of low density polyethylene (LDPE), 25-30 of a polyvinyl acetate emulsion, 14-16 of petroleum wax, 28-32 of mixed powder, 0.7-0.9 of an antioxidant 168, 1.2-1.5 of vinyltris(beta-methoxyethoxy)silane, 0.8-1.2 of sodium lauryl sulfate, and 2.5-3.5 of dipropyl ethanolamine. The hot melt adhesive provided in the invention has a reasonable formula and a simple preparation method. The adding of the petroleum wax and microcrystalline wax in the raw materials raises the softening point temperature of the hot melt adhesive. At the same time, the mixed powder and the polyvinyl acetate emulsion are added to make the hot melt adhesive have increased bonding strength and good fluidity. The waterproof hot melt adhesive disclosed in the invention has the advantages of environmental protection, safety, weatherability and low cost.

Description

technical field [0001] The invention relates to the field of polymer material processing, in particular to a water-resistant hot melt adhesive and a preparation method thereof. Background technique [0002] Hot melt adhesive is a solvent-free solid adhesive with thermoplastic resin as the main component. Because hot melt adhesive has fast bonding speed, non-toxicity, simple bonding process and good bonding strength and flexibility, etc. Advantages, it can bond various materials such as wood, paper, fiber, metal, plastic stools, and has a wide range of applications, especially in the fiber industry, packaging industry and binding industry, but most hot melt adhesives are used Polyester, polyamide and other hot-melt resins, due to the poor strength and elasticity of polyester hot-melt adhesives, can not withstand too much external force, and because of the high melting point and hardness of polyamide hot-melt adhesives, so in use aspects are restricted. Contents of the inve...

AI Technical Summary

Problems solved by technology

[0002] Hot melt adhesive is a solvent-free solid adhesive with thermoplastic resin as the main component. Because hot melt adhesive has fast bonding speed, non-toxicity, simple bonding process and good bonding strength and flexibility, etc. Advantages, it can bond various materials such as wood, paper, fiber, metal, plastic stools, and has a wide range of applications, especially in the fiber industry, packaging industry and binding industry, but most hot melt adhesives are used Polyester, polyamide and other hot-melt resins, due to the poor strength and elasticity of polyester hot-melt adhesives, can not withstand too much external force, and because of the high melting point and hardness of polyamide hot-melt adhesives, so in use Restricted