Title:
CROSSLINKED POLYVINYL CHLORIDE STRUCTURE FOAMED MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/199029
Kind Code:
A1
Abstract:
The present invention provides a method for preparing a crosslinked polyvinyl chloride structure foamed material by using a physical foaming agent, comprising: melting and mixing a polyvinyl chloride resin, a modified resin, an isocyanate, an anhydride, a nucleating agent and a heat stabilizer to obtain a blank; immersing the blank into a foaming gas for foaming to obtain a foamed body; and subjecting the foamed body to crosslinking curing to obtain a crosslinked polyvinyl chloride structure foam material. According to the present invention, the crosslinked polyvinyl chloride structural foamed material is prepared by means of a brand-new process route, and the composition and proportion of the PVC resin and other raw materials can be adjusted in a wide range; according to the present invention, carbon dioxide or nitrogen is used for foaming, such that the preparation process of the PVC foam is safer and more environmentally friendly, and the cost can be reduced; the foam material prepared by the present invention has a high glass transition temperature and a good heat resistance; and the preparation process of the present invention improves the compatibility or intersolubility of PVC and other raw materials, and the material performance is better. The present invention also provides a crosslinked polyvinyl chloride structural foamed material.
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Inventors:
TANG TAO (CN)
YOU JIANGAN (CN)
JIANG ZHIWEI (CN)
XUE JIAN (CN)
JIANG HANQING (CN)
QIU JIAN (CN)
XING HAIPING (CN)
LI MINGGANG (CN)
YOU JIANGAN (CN)
JIANG ZHIWEI (CN)
XUE JIAN (CN)
JIANG HANQING (CN)
QIU JIAN (CN)
XING HAIPING (CN)
LI MINGGANG (CN)
Application Number:
PCT/CN2021/128051
Publication Date:
September 29, 2022
Filing Date:
November 02, 2021
Export Citation:
Assignee:
CHANGCHUN INST OF APPLIED CHEMISTRY CHINESE (CN)
International Classes:
C08L27/06; C08J9/12
Foreign References:
| CN113061310A | 2021-07-02 | |||
| CN108219322A | 2018-06-29 | |||
| CN108350206A | 2018-07-31 | |||
| CN111004456A | 2020-04-14 | |||
| US20070200266A1 | 2007-08-30 | |||
| US20160362532A1 | 2016-12-15 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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