Microcellular chlorinated polyethylene (CM) rubber foam by using N2 as blowing agent

Microcellular Chlorinated Polyethylene (CM) foams were prepared through the batch-foaming method by using nitrogen as blowing agent. The effects of varying curing time, curing temperature, crosslinking agent content, carbon black content on the cell structure and physical-mechanical properties of CM...

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Bibliographic Details
Published in:Journal of polymer research 2017-10, Vol.24 (11), p.1, Article 175
Main Authors: Lang, Xian-hua, Wang, Dan, Prakashan, K., Zhang, Xin, Zhang, Zhen-Xiu
Format: Article
Language:English
Subjects:
Blowing agents
Blowing time
Carbon
Carbon black
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Chlorination
Crosslinking
Curing agents
Density
Foaming
Industrial Chemistry/Chemical Engineering
Mechanical properties
Plastic foam
Polyethylene
Polyethylenes
Polymer Sciences
Rubber
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Summary:Microcellular Chlorinated Polyethylene (CM) foams were prepared through the batch-foaming method by using nitrogen as blowing agent. The effects of varying curing time, curing temperature, crosslinking agent content, carbon black content on the cell structure and physical-mechanical properties of CM foam were investigated by scanning electron microscopy (SEM) and universal testing machine (UTM) respectively. The effect of the crosslink density on the CM foaming by varying curing time, curing temperature and crosslink agent revealed that there must be a minimum crosslink density attained in the vulcanizates for its effective foaming. However, when increasing the crosslink density of the vulvanizates beyond the sufficient crosslink density needed for foaming, the average cell sizes of the foams decreased and cell density increased. Expansion of the foams reduce its mechanical properties whereas increase of crosslink density of the matrix improved the mechanical properties. The existence of carbon black caused a decrease in average cell size and increase in cell density for the CM foams, resulting significant increase in mechanical properties of CM foams with increase of carbon black content. The observed phenomenon is attributed with good reinforcing behavior of carbon black to the CM foams.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-017-1340-2