Acrylic acid copolymerization composite adhesive as well as preparation method and application thereof

Abstract

The invention relates to the chemical field, and discloses an acrylic acid copolymerization composite adhesive as well as a preparation method and an application thereof. The invention comprises the following steps: firstly compositing acrylic acid colloid; 1, dissolving acrylic amide in the water with temperature of 40 to 50 DEG C, and injecting the mixture to a head tank to be mixed with acrylic acid and acrylonitrile; 2, injecting a PVA liquid in a reaction vessel with a proper amount of water, and heating the reaction vessel to 75 to 80 DEG C; 3, injecting ammonium persulphate in a dropwise adding slot; 3, simultaneously dropwise adding the mixed liquid in the head tank and the ammonium persulphate in the dropwise adding slot into the reaction vessel, and keeping the reaction temperature at 75 to 80 DEG C; heating the reaction vessel to 90 DEG C after dropwise adding, and keeping the temperature for 60 minutes; and then cooling to 40 DEG C naturally and adding caustic soda flakes so as to obtain the acrylic acid colloid; 4, stirring and mixing the acrylic acid colloid with starch to granulate; and drying after granulating; finally, naturally cooling and crushing after drying. The acrylic acid copolymerization composite adhesive particle prepared by the invention has good water solubility, low viscosity, convenience in transportation and usage, and is free of APEO assistant.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to an acrylic acid copolymerized composite adhesive and its preparation method and application. Background technique [0002] Acrylic adhesives have low viscosity and good fluidity, and are widely used in the textile industry. But acrylic adhesives are all colloidal, and there are many inconveniences in packaging, transportation, storage and use. If the packaging is damaged during transportation, it is easy to contaminate other raw materials; during use, it is inconvenient to dump colloidal substances from the packaging barrel, and it is easy to contaminate production equipment and utensils. [0003] In order to solve the technical defects of colloidal acrylic adhesives, the industry usually adds acrylates of hard monomers or solid copolymer pastes formed by adding strong hydrophilic acrylic monomers to the synthesis of acrylic adhesives. material. In the synthesis of acrylic adhesives, ...

AI Technical Summary

Problems solved by technology

In the synthesis of acrylic adhesives, the solid copolymer slurry formed by adding acrylates of hard monomers has poor resolubility after drying and dehydration, and it is easy to form insoluble jelly, which affects the quality of sizing; adding strong hydrophilic The solid copolymer slurry formed by permanent acrylic acid monomer has a low glass transition temperature, and the viscous slurry is easy to contaminate production equipment and tools. After forming a solid, it is like sugar filamentous micelles, which cannot be divided, stored, and transported at room temperature.