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Low-viscosity vinyl acetate-ethylene (VAE) copolymer emulsion and synthetic method and application thereof

A vinyl acetate, low viscosity technology, applied in the direction of monocarboxylate copolymer adhesive, adhesive type, textile and paper making, etc. The problem of low alkali resistance retention rate, etc., achieves the effect of good shear stability, high alkali resistance retention rate and good positioning effect.

Active Publication Date: 2012-03-14
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the early polymer resin coatings were organic solvent-based, which easily caused environmental pollution and was harmful to the human body.
[0003] At present, the main raw material of glass fiber sizing glue is polyacrylate emulsion, which has disadvantages such as hard hand feeling of mesh cloth, easy to break, and low retention rate of alkali resistance, which affects the quality of glass fiber mesh cloth and makes it suitable for use in applications. Promotion is greatly affected

Method used

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  • Low-viscosity vinyl acetate-ethylene (VAE) copolymer emulsion and synthetic method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A kind of synthetic method of low-viscosity vinyl acetate-ethylene copolymer emulsion:

[0055] (1) Preparation of raw materials

[0056] 1) Prepare the emulsifier system: add 45 parts of deionized water, 0.3 parts of hydroxyethyl cellulose, 1.5 parts of nonylphenol polyoxyethylene ether and 1.5 parts of alkylphenol polyoxyethylene ether sodium sulfate into the emulsifier tank, and start stirring Warm up to 60°C and stir for 30 minutes, fully mix and dissolve;

[0057] 2) Prepare initiator solution: add 1.5 parts of deionized water, 0.04 parts of formaldehyde sodium sulfoxylate to initiator tank a, stir and dissolve; add 18 parts of deionized water, 0.35 parts of sodium persulfate, and 0.1 part of bicarbonate to initiator tank b Sodium, stir to dissolve;

[0058] 3) Preparation of methylene acrylamide monomer solution: add 10 parts of deionized water and 2 parts of methylene acrylamide monomer, start the stirrer, and mix well.

[0059] 4) Add 0.02 parts of sodium forma...

Embodiment 2

[0074] A kind of synthetic method of low-viscosity vinyl acetate-ethylene copolymer emulsion:

[0075] (1) Preparation of raw materials

[0076] 1) Prepare the emulsifier system: add 50 parts of deionized water, 0.4 parts of hydroxypropyl cellulose, 2.5 parts of octylphenol polyoxyethylene ether and 1.5 parts of phenol ether ammonium sulfate into the emulsifier tank, start the agitator, and heat up to Stir at 50°C for 30 minutes, fully mix and dissolve;

[0077] 2) Preparation of initiator solution: Add 1.7 parts of deionized water and 0.04 parts of sodium formaldehyde sulfoxylate to initiator tank a, stir and dissolve; add 19 parts of deionized water, 0.4 parts of potassium persulfate, and 0.2 parts of sodium acetate to initiator tank b, Stir to dissolve;

[0078] 3) Prepare acrylamide monomer solution: add 12 parts of deionized water and 10 parts of acrylamide monomer, start the stirrer, and mix well.

[0079] 4) Add 0.03 parts of sodium formaldehyde sulfoxylate and 2 par...

Embodiment 3

[0094] A kind of synthetic method of low-viscosity vinyl acetate-ethylene copolymer emulsion:

[0095] (1) Preparation of raw materials

[0096] 1) Prepare the emulsifier system: add 50 parts of deionized water, 0.6 parts of carboxymethyl cellulose, 2.5 parts of nonylphenol polyoxyethylene ether and 2.0 parts of alkylphenol polyoxyethylene ether ammonium sulfate into the emulsifier tank, and start stirring Warm up to 70°C and stir for 30 minutes, fully mix and dissolve;

[0097] 2) Prepare initiator solution: add 2.0 parts of deionized water, 0.05 parts of formaldehyde sodium sulfoxylate to initiator tank a, stir and dissolve; add 20 parts of deionized water, 0.5 parts of ammonium persulfate, and 0.1 part of bicarbonate to initiator tank b Potassium, stirred to dissolve;

[0098] 3) Prepare acrylamide monomer solution: add 15 parts of deionized water and 5 parts of acrylamide monomer, start the agitator, and mix well.

[0099] 4) Add 0.04 parts of sodium formaldehyde sulfox...

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Abstract

The invention relates to low-viscosity vinyl acetate-ethylene (VAE) copolymer emulsion, which is characterized by being prepared from a monomer, an initiation system and an emulsification system, wherein the monomer is vinyl acetate, ethylene and acrylamide monomers; the initiation system comprises hydrogen peroxide, persulfate and a reducing agent; and the emulsification system comprises a composite emulsifier and a protective colloid. The low-viscosity VAE emulsion is high in flexibility, good in positioning effect and high in alkali-resisting retention rate, and after the low-viscosity VAE emulsion is soaked in 5 percent NaOH solution for 28 days, about 80 percent of strength of the low-viscosity VAE emulsion is reserved; and the low-viscosity VAE emulsion is easy to construct, low in formaldehyde content and high in shear stability, does not have pressure-sensitive performance, can be applied to the bonding of non-woven fabrics and fiberglass gridding cloth, and is particularly suitable to be used as adhesives to be applied to the field of the solidification and sizing of the fiberglass gridding cloth.

Description

technical field [0001] The invention relates to a vinyl acetate-ethylene copolymer emulsion (hereinafter referred to as VAE emulsion), in particular to a low-viscosity VAE emulsion and a synthesis method thereof. technical background [0002] Fiberglass mesh has the characteristics of light weight, high tensile strength, high temperature resistance, and corrosion resistance. It is widely used at home and abroad for reinforcement and insulation of interior and exterior walls, and its usage and export volume are increasing year by year. The quality of the glass fiber mesh is not only related to the composition of the glass fiber, but also directly related to the performance of the mesh setting glue. According to the requirements of product application performance, the mesh cloth should have the characteristics of softness, non-sticking and alkali corrosion resistance. Most of the early polymer resin coatings are organic solvent-based, which are easy to cause environmental pol...

Claims

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Application Information

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IPC IPC(8): C08F218/08C08F210/02C08F2/24C08F2/30C08F4/40C09J131/04D06M15/333
Inventor 袁万明罗丽华邱萱张波李宁黄建平
Owner CHINA PETROCHEMICAL CORP
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