High water-absorbing self-crosslinking epoxy acrylate copolymer and its preparation and application

A technology of epoxy acrylate and methyl methacrylate, which is applied in the field of polymers, can solve the problems of unsatisfactory film forming, water absorption and thermal stability, complex formula and preparation process, etc., and achieve the best humidity control effect , excellent film-forming properties, and good thermal stability

Inactive Publication Date: 2016-03-23
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the formulation and preparation process of these polymer resins are relatively complicated, and their film-forming properties, water absorption and thermal stability are not ideal.

Method used

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  • High water-absorbing self-crosslinking epoxy acrylate copolymer and its preparation and application
  • High water-absorbing self-crosslinking epoxy acrylate copolymer and its preparation and application
  • High water-absorbing self-crosslinking epoxy acrylate copolymer and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Preparation of highly water-absorbent self-crosslinking epoxy acrylate copolymer emulsion

[0062] Raw material ratio: by weight

[0063] 1 part methyl methacrylate, 1 part butyl acrylate, 1 part methacrylic acid, 1 part β-hydroxypropyl methacrylate, 1 part glycidyl methacrylate, 1 part sodium bicarbonate, potassium persulfate 1 part, 1 part of compound emulsifier (0.5 part of non-ionic emulsifier Tween-20, 0.5 part of ionic sodium lauryl sulfate), 1 part of deionized water.

[0064] Preparation process: add deionized water, neutralizer, compound emulsifier and monomer methyl methacrylate 0.2 parts, butyl acrylate 0.2 parts, methacrylic acid 0.2 parts, methacrylic acid-β-hydroxypropyl 0.2 parts of glycidyl methacrylate and 0.2 parts of glycidyl methacrylate were stirred and pre-emulsified at 50°C for 20 minutes; the temperature was raised to 80°C, and then the remaining monomers and initiators were added dropwise into the reactor, and the polymerization reaction wa...

Embodiment 2

[0071] (1) Preparation of highly water-absorbent self-crosslinking epoxy acrylate copolymer

[0072] Raw material ratio: by weight

[0073] 20 parts of methyl methacrylate, 10 parts of butyl acrylate, 10 parts of acrylic acid, 15 parts of hydroxyethyl acrylate, 15 parts of glycidyl methacrylate, 5 parts of sodium bicarbonate, 5 parts of potassium persulfate, 5 parts of compound emulsifier (1 part of non-ionic emulsifier OP-10, 4 parts of ionic sodium lauryl sulfate), 30 parts of deionized water.

[0074] Process: adding deionized water, sodium bicarbonate, compound emulsifier and monomer methyl methacrylate 2 parts, butyl acrylate 2 parts, acrylic acid 1 part, hydroxyethyl acrylate 1.5 parts, methacrylic acid 0.5 part of glycidyl ester, stirred and pre-emulsified at 30°C for 40 minutes; raised the temperature to 85°C, then added the remaining mixed monomer and initiator dropwise into the reactor, and polymerized for 2 hours under stirring to obtain a blue phase white superabsor...

Embodiment 3

[0081] (1) Preparation of highly water-absorbent self-crosslinking epoxy acrylate copolymer emulsion

[0082] Raw material ratio: by weight

[0083] 50 parts of methyl methacrylate, 20 parts of butyl acrylate, 30 parts of fumaric acid, 30 parts of hydroxyethyl methacrylate, 30 parts of glycidyl methacrylate, 8 parts of sodium bicarbonate, 8 parts of potassium persulfate, 8 parts of compound emulsifier (1 part of non-ionic emulsifier OP-10, 7 parts of ionic sodium lauryl sulfate), 40 parts of deionized water.

[0084] Preparation process: add deionized water, sodium bicarbonate, compound emulsifier and 8 parts of methyl methacrylate, 8 parts of butyl acrylate, 6 parts of fumaric acid, and 5 parts of hydroxyethyl methacrylate into the reactor , 5 parts of glycidyl methacrylate, stirred and pre-emulsified at 20°C for 100 minutes; raised the temperature to 65°C, then added the remaining monomer and initiator dropwise into the reactor, and polymerized for 5 hours under stirring to...

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Abstract

The invention provides a highly water-absorbing self-crosslinking epoxy acrylate copolymer for humidity-adjusting coatings, which uses acrylate as a comonomer, unsaturated hydrocarbon acid and hydroxy acrylate as water-absorbing functional monomers, Glycidyl methacrylate is a cross-linking monomer. After copolymerization, a copolymer emulsion is obtained. The emulsion has high water absorption, good compactness and thermal stability. The indoor humidity-adjusting coating prepared by compounding the copolymer emulsion and inorganic porous polymer filler has good permeability, water absorption and humidity-regulating properties, and can also prevent the wall from being painted due to various leakages and condensation water. The film falls off, which makes the coating film more durable and has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, relates to an epoxy acrylate copolymer and a preparation method thereof, in particular to a highly water-absorbing self-crosslinking epoxy acrylate copolymer and its preparation; the invention also relates to the following: The application of the highly water-absorbing self-crosslinking epoxy acrylate copolymer as a film-former in the preparation of indoor humidity-regulating coatings. Background technique [0002] With the development of science and technology and the improvement of people's living standards, coatings are developing from a purely protective and decorative role to a professional, functional and intelligent direction. In addition, the safety and comfort of the indoor environment has always been the goal that people pursue. Among them, the relative humidity of the air is an important parameter closely related to people's life and production. When the indoor relative humidity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F220/14C08F220/18C08F220/28C08F220/32C08F222/02C08F2/26C08F2/30C09D133/02C09D133/12C09D7/12
Inventor 王荣民王晓雯朱永峰何玉凤吴战民
Owner NORTHWEST NORMAL UNIVERSITY
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