Vinyl acetate-ethylene copolymer emulsion as electrostatic spinning adhesive and synthesis method thereof
A technology of ethylene copolymer emulsion and vinyl acetate, applied in the direction of monocarboxylate copolymer adhesive, adhesive type, device for coating liquid on the surface, etc., can solve the problem of low bonding strength, poor water resistance, hand feeling Hard and other problems, to achieve the effect of good product performance, low glass transition temperature and fine particles
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[0041] Example 1
[0042] 1. Preparation of raw materials
[0043] 1) Pre-emulsion preparation: add 80 parts of deionized water to the pre-emulsification tank, start the stirrer, and add 1.5 parts of composite emulsifier (where the non-ionic emulsifier is octylphenol polyoxyethylene ether (X-100), 0.3 parts , Amphoteric emulsifier is alkylphenol polyoxyethylene ether sodium sulfate (VA-50), 1.2 parts), 0.2 parts sodium bicarbonate, 0.2 parts sodium acetate, 5 parts N-methylol acrylamide, after stirring and dissolving, Add 80 parts of vinyl acetate and 20 parts of butyl acrylate, stir for 30 minutes to prepare a pre-emulsion;
[0044] 2) Prepare the emulsifier solution: add 40 parts of deionized water, 0.1 part of hydroxyethyl cellulose, and 3.3 parts of composite emulsifier to the emulsifier tank (where the nonionic emulsifier is octylphenol polyoxyethylene ether (X-100) , 0.5 part, amphoteric emulsifier is alkylphenol polyoxyethylene ether sodium sulfate (VA-50), 2.8 parts), start...
Example Embodiment
[0050] Example 2:
[0051] Take 120 parts of deionized water, 0.3 parts of carboxymethyl cellulose, 6 parts of composite emulsion (wherein the non-ionic emulsifier is nonylphenol polyoxyethylene ether (CO-887), 0.8 parts, the amphoteric emulsifier is phenol ether sulfuric acid Class (NPS930), 5.2 parts), 1.2 parts cumene hydrogen peroxide, 0.5 parts zinc formaldehyde sulfoxylate, 0.4 parts sodium bicarbonate, 0.2 parts sodium acetate, 7 parts N-methylolacrylamide, 90 parts acetic acid Ethylene, 35 parts of isooctyl acrylate, 20 parts of ethylene, the special VAE for electrostatic flocking was prepared by the method of Example 1. The results are as follows:
[0052] Exterior
[0053] Glass transition temperature℃
Example Embodiment
[0054] Example 3:
[0055] Take 140 parts of deionized water, 0.2 parts of hydroxypropyl cellulose, 7 parts of composite emulsion (of which the nonionic emulsifier is octylphenol polyoxyethylene ether (CA-630), 1.0 part, the amphoteric emulsifier is alkylphenol Polyoxyethylene ether sodium sulfate (VA-50), 6.0 parts), 1.5 parts tert-butyl hydroperoxide, 0.7 parts zinc formaldehyde sulfoxylate, 0.3 parts sodium bicarbonate, 0.4 parts sodium acetate, 4 parts N-hydroxy Methacrylamide, 120 parts of vinyl acetate, 40 parts of ethyl acrylate, and 30 parts of ethylene were used to prepare VAE for electrostatic flocking using the method of Example 1. The results are as follows:
[0056] Exterior
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