Synthesis of Thermoreversibly Cross-Linked Polyethylenes Based on Diels-Alder Reaction

Li-ying LIU; Hui NIU

doi:10.14028/j.cnki.1003-3726.2021.06.011

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Synthesis of Thermoreversibly Cross-Linked Polyethylenes Based on Diels-Alder Reaction

Special Issue: In Celebration of the 80th Birthday of Professor HU You-liang | 更新时间：2022-08-30

- Synthesis of Thermoreversibly Cross-Linked Polyethylenes Based on Diels-Alder Reaction
- Polymer Bulletin Vol. 34, Issue 6, Pages: 114-121(2021)
- 作者机构：
  
  大连理工大学高分子材料系,大连 116024
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2021.06.011
  CLC：
- Published：20 June 2021，
  
  Received：27 December 2020，
  
  Revised：17 February 2021，
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Li-ying LIU, Hui NIU. Synthesis of Thermoreversibly Cross-Linked Polyethylenes Based on Diels-Alder Reaction. [J]. Polymer Bulletin 34(6):114-121(2021)
DOI：

Li-ying LIU, Hui NIU. Synthesis of Thermoreversibly Cross-Linked Polyethylenes Based on Diels-Alder Reaction. [J]. Polymer Bulletin 34(6):114-121(2021) DOI： 10.14028/j.cnki.1003-3726.2021.06.011.

摘要

分别以Ziegler-Natta催化剂和茂金属催化剂(

rac

-Et(Ind)

ZrCl

)引发乙烯/6-呋喃-1-己烯(FH)共聚合

合成了侧基含有呋喃取代基的聚乙烯。再以1

6-二马来酰亚胺基己烷(BMH)为交联剂

通过Diels-Alder反应制备了交联聚乙烯。利用

H-NMR、DSC等对乙烯/FH 共聚物结构进行了表征

利用FTIR、拉伸测试、蠕变实验等对交联聚乙烯的结构与性能进行测定。结果表明

通过改变马来酰亚胺与呋喃的比例可以调节聚乙烯的交联程度

同时Diels-Alder反应的热可逆性赋予交联聚乙烯重复加工性。

Abstract

The copolymerization of ethylene/6-furyl-1-hexene (FH) was conducted with Ziegler-Natta and metallocene (

rac

-Et(Ind)

ZrCl

) catalysis respectively to synthesize polyethylenes with furyl-pendent group. Cross-linked polyethylenes were then prepared via Diels-Alder reaction by adding 1

6-bismaleimidohexane (BMH) as cross-linking agent into the ethylene/FH copolymer. The copolymers structure was characterized by

H-NMR and DSC. The cross-linked polyethylene structure and properties were measured by FTIR

creep and tensile tests. The results showed that the crosslinking degree of polyethylene could be adjusted by changing the ratio of maleimide to furan

and thermal reversibility of Diels-Alder reaction endowed cross-linked polyethylenes with reprocessability.

关键词

聚乙烯Diels-Alder反应热可逆交联

Keywords

PolyethyleneDiels-Alder reactionThermoreversible cross-linking

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