INFLUENCE OF CROSSLINKING ON PHYSICAL PROPERTIES OF LOW DENSITY POLYETHYLENE

Xiao-hu Zhang; Hong-mei Yang; Yi-hu Song; Qiang Zheng

doi:10.1007/s10118-012-1194-3

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INFLUENCE OF CROSSLINKING ON PHYSICAL PROPERTIES OF LOW DENSITY POLYETHYLENE

PAPER | Updated：2023-01-03

- INFLUENCE OF CROSSLINKING ON PHYSICAL PROPERTIES OF LOW DENSITY POLYETHYLENE
- Chinese Journal of Polymer Science Vol. 30, Issue 6, Pages: 837-844(2012)
- Affiliations：
  
  a.Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  b.Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  **Hong-mei Yang (杨红梅), E-mail: yanghongmei@zju.edu.cn
- Funds：
- DOI：10.1007/s10118-012-1194-3
  CLC：
- Received：24 February 2012，
  
  Revised：2012-04-25，
  
  Accepted：07 May 2012，
  
  Published：2012-11
- Accepted：
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Xiao-hu Zhang, Hong-mei Yang, Yi-hu Song, et al. INFLUENCE OF CROSSLINKING ON PHYSICAL PROPERTIES OF LOW DENSITY POLYETHYLENE[J]. Chinese Journal of Polymer Science, 2012, 30(6): 837-844.
DOI：

Xiao-hu Zhang, Hong-mei Yang, Yi-hu Song, et al. INFLUENCE OF CROSSLINKING ON PHYSICAL PROPERTIES OF LOW DENSITY POLYETHYLENE[J]. Chinese Journal of Polymer Science, 2012, 30(6): 837-844. DOI： 10.1007/s10118-012-1194-3.

摘要

Abstract

Influence of crosslinking on physical properties of low density polyethylene was studied. The results indicated that

at low degrees of crosslinking

the network hardly affects the crystallinity

elastic modulus (

) and yielding stress while it improves the tensile strength and strain at break simultaneously. Tensile strength reaches a maximum of about 24 MPa at 1.5 phr dicumyl peroxide (DCP) then decreases to a constant value of about 18 MPa due to decrease of crystallinity.

reaches its maximum at 0.5 phr DCP corresponding to gel fraction of about 75% without marked change in crystallinity. The crosslinked polyethylene exhibits two yielding processes

and both yielding stresses approximately linearly depend on crystallinity.

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