Unleashing the Power of Bio-based Thermotropic Liquid Crystal Modifiers: Toughening and Reinforcing Petroleum-based Epoxy Resin without Compromising Other Properties

Qing-Yun Lu; Hong-Wei Gu; Jia-Hui Li; Qian-Qian Fan; Bei-Tao Liu; Yan Kou; Xi-Gao Jian; Zhi-Huan Weng

doi:10.1007/s10118-024-3149-x

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Unleashing the Power of Bio-based Thermotropic Liquid Crystal Modifiers: Toughening and Reinforcing Petroleum-based Epoxy Resin without Compromising Other Properties

RESEARCH ARTICLE | Updated：2024-08-06

- Unleashing the Power of Bio-based Thermotropic Liquid Crystal Modifiers: Toughening and Reinforcing Petroleum-based Epoxy Resin without Compromising Other Properties
- Chinese Journal of Polymer Science Vol. 42, Issue 8, Pages: 1093-1102(2024)
- Affiliations：
  
  a.State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, Liaoning Technology Innovation Center of High Performance Resin Materials, Department of Polymer Science & Engineering, Dalian University of Technology, Dalian 116024, China
  b.Thermochemistry Laboratory, Liaoning Province Key Laboratory of Thermochemistry for Energy and Materials, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Author bio：
  
  kouyan@dicp.ac.cn (Y.K.)
  zweng@dlut.edu.cn (Z.H.W.)
- Funds：
- DOI：10.1007/s10118-024-3149-x
  CLC：
- Received：14 March 2024，
  
  Revised：2024-04-14，
  
  Accepted：24 April 2024，
  
  Online First：26 June 2024，
  
  Published：01 August 2024
- Accepted：
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Lu, Q. Y.; Gu, H. W.; Li, J. H.; Fan, Q. Q.; Liu, B. T.; Kou, Y.; Jian, X. G.; Weng, Z. H. Unleashing the power of bio-based thermotropic liquid crystal modifiers: toughening and reinforcing petroleum-based epoxy resin without compromising other properties. Chinese J. Polym. Sci. 2024, 42, 1093–1102

Qing-Yun Lu, Hong-Wei Gu, Jia-Hui Li, et al. Unleashing the Power of Bio-based Thermotropic Liquid Crystal Modifiers: Toughening and Reinforcing Petroleum-based Epoxy Resin without Compromising Other Properties[J]. Chinese Journal of Polymer Science, 2024, 42(8): 1093-1102.
Lu, Q. Y.; Gu, H. W.; Li, J. H.; Fan, Q. Q.; Liu, B. T.; Kou, Y.; Jian, X. G.; Weng, Z. H. Unleashing the power of bio-based thermotropic liquid crystal modifiers: toughening and reinforcing petroleum-based epoxy resin without compromising other properties. Chinese J. Polym. Sci. 2024, 42, 1093–1102 DOI： 10.1007/s10118-024-3149-x.

Qing-Yun Lu, Hong-Wei Gu, Jia-Hui Li, et al. Unleashing the Power of Bio-based Thermotropic Liquid Crystal Modifiers: Toughening and Reinforcing Petroleum-based Epoxy Resin without Compromising Other Properties[J]. Chinese Journal of Polymer Science, 2024, 42(8): 1093-1102. DOI： 10.1007/s10118-024-3149-x.

摘要

A bio-based thermotropic liquid crystal epoxy resin (THMT-EP) was used to modify petroleum-based epoxy resin (E51)

which significantly improved the impact strength of the blended system

as well as the thermal stability

mechanical strength

and flame retardant properties. It addressed the dilemma of sacrificing other properties for toughened epoxy resin.

Abstract

Toughening the petroleum-based epoxy resin blends with bio-based modifiers without compromising their modulus

mechanical strength

and other properties is still a big challenge in view of the sustainability. In this study

a bio-based liquid crystal epoxy resin (THMT-EP) with an

-triazine ring structure was utilized to modify a petroleum-based bisphenol A epoxy resin (E51) with 4

4'-diaminodiphenylsulfone (DDS) as a curing agent

and the blended systems were evaluated for their thermal stability

mechanical properties

and flame retardancy. The results showed that the impact strength of the blended system initially increased and then decreased with the increase in THMT-EP content

and it reached the a maximum value of 26.5 kJ/m

when the THMT-EP content was 5%

which was 31.2% higher than that of E51/DDS. Notably

the flexural strength

modulus

and glass transition temp

erature of the blended system were all simultaneously improved with the addition of THMT-EP. At the same time

the addition of THMT-EP enhanced the flame retardancy of the system by increasing the char yield at 700 °C and decreasing the peak heat release rate and total heat release rate. This work paves the way for a more sustainable improvement in the comprehensive performance of epoxy resin.

关键词

Keywords

references

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