Benzene compound-free and halide-free environment-friendly SBS (Styrene Butadiene Styrene) graft modification adhesive and preparation method thereof

Abstract

The invention discloses a benzene compound-free and halide-free environment-friendly SBS (Styrene Butadiene Styrene) graft modification adhesive and a preparation method thereof. The adhesive comprises SBS, an environment-friendly solvent, a grafting monomer, an initiator, a molecular weight regulator, a terminator and thickening resin. The preparation method comprises the following steps of: initiating double bonds on the SBS by using a free radical initiator, adding the monomers to carry out an addition reaction; with the reaction product as a seed, dropwise adding the subsequent monomers to continuously react to realize graft modification on the SBS; and finally adding the thickening resin, so as to obtain the final adhesive product. The preparation method has the advantage that since the SBS is dissolved by utilizing the environment-friendly solvent, the use of toxic solvents such as toluene and chlorohydrocarbon is effectively avoided. The adhesive utilizing the formula is environment-friendly and has low toxicity, high bonding strength, light color, good water tolerance and high solid content; and the general disadvantages that the SBS type adhesives containing benzene compounds and halides are high in toxicity, lower in viscosity and low in bonding strength, are easy to permeate and are difficult to roll up are overcome; and the color does not change after the adhesive provided by the invention is stored for a long time.

Description

technical field [0001] The invention relates to a novel benzene-series-free, halogen-free, environment-friendly SBS graft-modified adhesive and a preparation method thereof, which are mainly used in shoemaking, luggage and other material bonding and compounding industries. Background technique [0002] According to statistics, in recent years, my country has produced more than 10 billion pairs of shoes each year, accounting for nearly 70% of the world's total shoe production. It is the world's largest footwear manufacturing base and the world's largest footwear exporter. At the same time, as the world's largest producer and exporter of luggage, my country's annual output accounts for more than 50% of the world's total output, and a large amount of solvent-based adhesives are consumed in the manufacturing process of luggage. At present, most of the domestic adhesives for bags and shoes are solvent-based, such as toluene, dichloromethane, 1,2-dichloroethane, etc. The extensive...

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Problems solved by technology

However, the above reactions are mostly carried out in a single solvent such as toluene, etc.

And there is no report on applying graft modified products to composite adhesives for bags or shoes

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