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A kind of ultrafine environment-friendly thermal expansion microcapsule and preparation method thereof

A heat-expandable microcapsule, environmental protection technology, applied in the directions of microcapsule preparation, microsphere preparation, etc., can solve the problem that the particle size of the heat-expandable microcapsule cannot be obtained in sub-micron level, etc.

Active Publication Date: 2021-08-20
三明市锦浪新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that in the existing preparation technology, the particle size of the thermally expandable microcapsules prepared by the method of suspension polymerization cannot obtain submicron products.

Method used

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  • A kind of ultrafine environment-friendly thermal expansion microcapsule and preparation method thereof
  • A kind of ultrafine environment-friendly thermal expansion microcapsule and preparation method thereof
  • A kind of ultrafine environment-friendly thermal expansion microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of ultrafine environmental protection thermally expandable microcapsules, comprising the steps of:

[0041] (1) Preparation of water phase: 0.2 parts by weight of tween-20 and 0.5 parts by weight of Span-60, 5 parts by weight of polyvinylpyrrolidone, 60 parts by weight of sodium chloride, 0.2 parts by weight of sodium nitrite were added to 400 parts by weight in deionized water and dispersed to obtain a water phase composition;

[0042] (2) Preparation of oil phase: 10 parts by weight of isopentane, 30 parts by weight of isooctane, 20 parts by weight of acrylonitrile monomer, 80 parts by weight of methyl methacrylate, 1 part by weight of dilauroyl peroxide, 1 part by weight of Parts of trimethylolpropane trimethyl methacrylate are mixed uniformly to obtain an oil phase composition;

[0043](3) Preparation of dispersion: add the oil phase composition to the water phase composition, and at room temperature at a stirring speed of 15000r / min, emulsify ...

Embodiment 2～10

[0047] Except for changing the type and amount of each component in the oil phase composition, other conditions are the same as in Example 1, see Table 1 for details.

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Abstract

The invention discloses an ultrafine environmental-friendly thermal expansion microcapsule, which is prepared by a microwave radiation emulsion polymerization method from a suspension dispersion of an oil phase composition and an aqueous phase composition. High foaming rate, environmental protection and non-toxic, can be used in textile, paper, ink, engineering plastics and other fields. The invention also discloses a preparation method of ultrafine environment-friendly heat-expandable microcapsules. The heat-expandable microcapsules are prepared based on microwave radiation radical emulsion polymerization technology, and the operation is simple, the preparation process is simple, and the production efficiency is high.

Description

technical field [0001] The invention relates to a heat-expandable microcapsule, in particular to an ultrafine environment-friendly heat-expandable microcapsule and a preparation method thereof. Background technique [0002] Thermally expandable microcapsules are microcapsules formed by wrapping a low-boiling point physical blowing agent with a thermoplastic polymer shell with good gas barrier properties, and are generally formed by suspension polymerization of polymerizable monomers and blowing agents in a water-soluble dispersion system . [0003] Traditional chemical foaming methods are basically used in resin foaming to achieve lightweight and control of cell structure. However, the surface quality problem of the foamed material cannot be solved by using the chemical foaming method. Whether it is a chemical foaming system or a supercritical physical foaming system, the formation of cells depends on the diffusion of gas, and the related problems of cell merging, coarseni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/14C08F220/14C08F220/44C08F222/14C08F220/46C08F220/06C08F212/36C08F283/06C08F212/08C08F2/46
CPCB01J13/14C08F2/46C08F220/14C08F283/065C08F222/103C08F220/44C08F220/46C08F220/06C08F222/102C08F212/36
Inventor 陈敬清彭本权林杏江李德福林志辉
Owner 三明市锦浪新材料科技有限公司
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