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Citation: JIANG Zhiwei, XUE Jian, DU Zhonghui, TANG Tao, LIU Wenbin. Effect of Foaming Agents on Structure and Properties of Crosslinked Polyvinyl Chloride Foam[J]. Chinese Journal of Applied Chemistry, ;2014, 31(11): 1248-1254. doi: 10.3724/SP.J.1095.2014.40055 shu

Effect of Foaming Agents on Structure and Properties of Crosslinked Polyvinyl Chloride Foam

JIANG Zhiwei ^a,b ,
XUE Jian ^a ,
DU Zhonghui ^c ,
TANG Tao ^a,, ,
LIU Wenbin ^c

1.
a State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2.
b University of Chinese Academy of Sciences, Beijing 100039, China;
3.
c College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China

Corresponding author: TANG Tao,
Received Date: 28 February 2014
Available Online: 18 April 2014
Fund Project: 国家自然科学基金(51233005)资助项目 (51233005)

Polyvinyl chloride(PVC) foam cross-linked by isocyanate and epoxy resin was prepared.Both azobisisobutyronitrile(AIBN) and azodicarbonamide(AC) were used as foaming agents in the prefoam process.Morphologies of foams were characterized by SEM.The effects of particle size,proportion,loading of foaming agents were investigated.The particle size of AIBN has no effect on the cell structure,but the increase of AIBN loading leads to a lower density.The effect of AC particle size on the cell structure is obvious,and the optimal size is 8~20 μm.The cell size mainly depends on the loading of AC.Decomposition of foaming agent was studied by DSC.Both the decomposition behavior of mixed foaming agents and the nucleating effect of AC for the prefoam determine the cell morphology of the resultant foams.The strength increases with the increase of density,but the maximum shear strain appears in the foams with the density of 60~80 kg/m³.
- cross-linked polyvinyl chloride foam,
- foaming agent,
- isocyanate,
- epoxy
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