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Study on a Polyhexahydrotriazine Resin with Recyclability and Intrinsic Thermal Conductivity
- ACTA POLYMERICA SINICA Vol. 52, Issue 9, Pages: 1156-1164(2021)
- 作者机构：
华南理工大学材料科学与工程学院 广东省高性能与功能高分子材料重点实验室 广州 510641
- 作者简介：
Yan-chao Yuan, E-mail: msycyuan@scut.edu.cn
- 基金信息：
DOI：10.11777/j.issn1000-3304.2021.21035
CLC：Published：20 September 2021，
Published Online：24 June 2021，
Received：28 January 2021，
Revised：05 March 2021，
扫 描 看 全 文
麻乐,袁彦超,刘诗博等.可循环回收利用的本征导热聚六氢三嗪树脂研究[J].高分子学报,2021,52(09):1156-1164.
Ma Le,Yuan Yan-chao,Liu Shi-bo,et al.Study on a Polyhexahydrotriazine Resin with Recyclability and Intrinsic Thermal Conductivity[J].ACTA POLYMERICA SINICA,2021,52(09):1156-1164.
麻乐,袁彦超,刘诗博等.可循环回收利用的本征导热聚六氢三嗪树脂研究[J].高分子学报,2021,52(09):1156-1164. DOI： 10.11777/j.issn1000-3304.2021.21035.
Ma Le,Yuan Yan-chao,Liu Shi-bo,et al.Study on a Polyhexahydrotriazine Resin with Recyclability and Intrinsic Thermal Conductivity[J].ACTA POLYMERICA SINICA,2021,52(09):1156-1164. DOI： 10.11777/j.issn1000-3304.2021.21035.
摘要
采用多聚甲醛(PFA)和含有芳香酰胺特殊结构的4
4
'
-二氨基苯酰替苯胺(DABA)为原料，通过利用分子链间氢键强相互作用向树脂固化网络中引入局域微观有序结构增大声子传播自由程，合成一种新型本征导热聚六氢三嗪热固性树脂(DABA-PHT). 通过对树脂预聚过程和机理、固化工艺、导热性能、降解性能及循环回收利用性能的研究表明：水能够作为催化剂有效加速预聚反应、大幅缩短预聚时间，且酰胺N－H键未参与交联反应；DABA-PHT树脂易于合成和加工，且具有良好的力学、耐热、降解和循环回收利用性能，热导率达到0.38 W·m
-1
·K
-1
，接近普通环氧树脂的2倍，有望用来制备可循环回收利用的高热导率热固性树脂基复合材料.
Abstract
The instant heat dissipation performance of electronic devices plays a decisive role in their service life
but contradicts with the continuous demand in their reducing size. The key to solving this technical bottleneck is to develop and use insulative polymer materials with high thermal conductivity
expecially those simutaneously with recyclability
which can further reduce the cost
protect the environment and prolong their sustainablility. Based on these
we used polyformaldehyde (PFA) and 4
4
'
-diaminobenzylaniline (DABA) with special aromatic-amide structure as raw materials
introduced local microscopic ordered structures into the resin curing network
via
the strong hydrogen bond interaction between amide bonds to increase the propagation free path of phonon
and synthesized a novel polyhexahydrotriazine thermosetting resin (DABA-PHT). Its prepolymerization process and mechanism
curing technology and performances in thermal conductivity
degradability and recycliability were investigated. The results show that water can be used as a catalyst to effectively accelerate the prepolymerization reaction and shorten the prepolymerization time greatly; the amidic N―H bonds did not participate in the crosslinking reaction; DABA-PHT resin can be easily synthesized and processed
and demonstrates satisfying mechanical property
heat resistance
degradability and recyclability. Its thermal conductivity is 0.38 W·m
-1
·K
-1
nearly twice as much as those of ordinary epoxy resins. Therefore
DABA-PHT can be expected to be used to prepare recyclable thermosetting resin matrix composites with high thermal conductivity.
关键词
聚六氢三嗪可循环回收利用本征导热氢键相互作用
Keywords
Poly(hexahydrotriazine)RecyclableIntrinsic thermal conductivityHydrogen bond interactions
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