A preparation method of fully open-cell polymer foam material and corresponding foam material

A technology of foaming materials and polymers, which is applied in the field of polymer materials, can solve the problems of restricting the application range of foaming technology, the difficulty of opening pores or the opening rate on the surface of polymer foaming materials, and avoiding cost and environmental pollution. Good surface opening effect and good connectivity
CN108341986BActive Publication Date: 2020-06-05塑凡新材料科技(上海)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
塑凡新材料科技(上海)有限公司
Publication Date
2020-06-05

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Abstract

The invention belongs to the field of high-polymer materials, and discloses a preparing method of a full-cell polymer foaming material and the foaming material prepared through the method. The methodincludes the following steps of firstly, selecting a non-water-soluble thermoplastic polymer or a mixture of the non-water-soluble thermoplastic polymer and a water-soluble thermoplastic polymer to prepare a blank; secondly, coating the surface of the blank with a water solution of the water-soluble thermoplastic polymer to prepare a protection blank; thirdly, conducting supercritical fluid foaming on the protection blank to prepare a foaming blank; fourthly, conducting leaching and drying on the foaming blank to prepare the finished product. The size of cells in the surface of the prepared foaming material is 5-20 micron, and the cell density is not lower than 1.0*10<7> cell / cm<3>. Compared with the prior art, the surface porosity is high, the internal cell structure is not broken, and the material is free of pollution, environmentally friendly and low in production cost.
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Description

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a method for preparing a fully open-cell polymer foam material and a fully open-cell foam material prepared by the method. Background technique

[0002] Polymer foam material refers to a microporous material based on polymer (plastic, rubber, elastomer or natural polymer material) with numerous bubbles inside, and can also be regarded as a composite material filled with gas. Open-cell polymer foam materials are widely used in the fields of biology, medical treatment, and environmental engineering. They can be used in tissue engineering, solvent extraction, thermal insulation, sound absorption, water stop and water retention, oil absorption, and drug controlled release.

[0003] supercritical fluid (N 2 , CO 2 etc.) Foaming technology has attracted more and more attention in the preparation of porous tissue engineering scaffold materials due to its green and pollutio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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