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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

Active Publication Date: 2011-04-27
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a water-resistant adhesive that is good in water resistance and suitable for poly Vinyl acetate-ethylene copolymer emulsion (VAE emulsion) with strong adhesion to low surface energy materials such as ethylene and polypropylene, and fine particle size

Method used

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  • Vinyl acetate-ethylene copolymer emulsion as electrostatic spinning adhesive and synthesis method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Preparation of raw materials

[0043] 1) Preparation of pre-emulsion: add 80 parts of deionized water to the pre-emulsification tank, start the mixer, add 1.5 parts of composite emulsion (wherein the nonionic emulsifier is octylphenol polyoxyethylene ether (X-100), 0.3 parts , The amphoteric emulsifier is sodium alkylphenol polyoxyethylene ether sulfate (VA-50), 1.2 parts), 0.2 parts of sodium bicarbonate, 0.2 parts of sodium acetate, 5 parts of N-methylolacrylamide, after stirring and dissolving, Add 80 parts of vinyl acetate and 20 parts of butyl acrylate, and stir for 30 minutes to prepare a pre-emulsion;

[0044] 2) Prepare emulsifier solution: add 40 parts of deionized water, 0.1 part of hydroxyethyl cellulose, and 3.3 parts of compound emulsion into the emulsifier tank (the non-ionic emulsifier is octylphenol polyoxyethylene ether (X-100) , 0.5 parts, the amphoteric emulsifier is sodium alkylphenol polyoxyethylene ether sulfate (VA-50), 2.8 parts), start the agi...

Embodiment 2

[0051] Get 120 parts of deionized water, 0.3 part of carboxymethyl cellulose, 6 parts of composite emulsion (wherein the nonionic emulsifier is nonylphenol polyoxyethylene ether (CO-887), 0.8 part, and the amphoteric emulsifier is phenol ether sulfuric acid (NPS930), 5.2 parts), 1.2 parts cumene hydroperoxide, 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, prepare the special VAE of electrostatic flocking with the method of embodiment 1, the result is as follows:

[0052] Exterior

[0053] Glass transition temperature °C

Embodiment 3

[0055] Get 140 parts of deionized water, 0.2 part of hydroxypropyl cellulose, 7 parts of composite emulsion (wherein nonionic emulsifier is octylphenol polyoxyethylene ether (CA-630), 1.0 part, amphoteric emulsifier is alkylphenol Polyoxyethylene ether sulfate sodium salt (VA-50), 6.0 parts), 1.5 parts of tert-butyl hydroperoxide, 0.7 parts of zinc formaldehyde sulfoxylate, 0.3 parts of sodium bicarbonate, 0.4 parts of sodium acetate, 4 parts of N-hydroxy Methacrylamide, 120 parts of vinyl acetate, 40 parts of ethyl acrylate, 30 parts of ethylene, prepare the special VAE for electrostatic flocking with the method of embodiment 1, the result is as follows:

[0056] Exterior

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Abstract

The invention relates to a vinyl acetate-ethylene copolymer emulsion as an electrostatic spinning adhesive and a synthesis method thereof. Organic peroxides and zinc formaldehyde sulfate are taken as an initiator; vinyl acetate, ethylene, acrylic ester monomers and cross-linking monomer N-hydroxymethyl acrylamide are taken as comonomers; a nonionic emulsifier, and the synthetic emulsion and the protective colloid of an amphoteric emulsifier are matched to be taken as an emulsification system; and the copolymer emulsion is prepared through emulsion polymerization. Compared with the VAE (vinyl acetate-ethylene) emulsion prepared by the conventional preparation method, the product in the invention has the advantages of good water resistance, strong adhesion on low-surface-energy materials (polyethylene, polypropylene and the like), fine grain and the like. The vinyl acetate-ethylene copolymer emulsion is suitable for being as the adhesive to be applied to the field of the electrostatic spinning in textile industry and the fields of waterproofing and packaging.

Description

Technical field: [0001] The invention relates to a vinyl acetate-ethylene copolymer emulsion (VAE emulsion), in particular to a vinyl acetate-ethylene copolymer emulsion used as an electrostatic flocking adhesive and a synthesis method. technical background: [0002] VAE emulsion is a new type of emulsion that was developed in the mid-1960s. It is produced by emulsion polymerization. Water and emulsifier are added to the autoclave, and then the initiator (peroxide) is added continuously and evenly within several hours. Feed ethylene at a certain temperature for reaction. After adding the initiator, raise the temperature to about 75°C, react for several hours, release the pressure, and separate to obtain the emulsion (the content of vinyl acetate is 70%-95%). VAE emulsions with different ethylene contents can be prepared by changing the ratio of raw material monomers, the amount of initiator and the reaction process conditions. Many large companies in the world once owned VA...

Claims

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Application Information

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IPC IPC(8): C08F218/08C08F220/18C08F220/58C08F2/30C08F2/24C09J131/04B05D1/16
Inventor 曹勇陈琼李清扬吴江红
Owner CHINA PETROCHEMICAL CORP
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