PTS和PTK在各种环氧树脂中的增韧效果比较研究。

Comparative Study on Toughening Effect of PTS and PTK in Various Epoxy Resins.

作者信息

Kwon Woong, Han Minwoo, Kim Jongwon, Jeong Euigyung

机构信息

Department of Textile System Engineering, Kyungpook National University, Daegu 41566, Korea.

Department of Fiber System Engineering, Yeungnam University, Gyeongsan 38541, Korea.

出版信息

Polymers (Basel). 2021 Feb 9;13(4):518. doi: 10.3390/polym13040518.

DOI:10.3390/polym13040518

PMID:33572307

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7916120/

Abstract

This study investigated the toughening effect of in situ polytriazoleketone (PTK) and polytriazolesulfone (PTS) toughening agent when applied to various epoxy resins, such as diglycidyl ether of bisphenol A (DGEBA), diglycidyl ether of bisphenol F (DGEBF), and triglycidyl -aminophenol (TGAP) with 3,3'-diaminodiphenylsulfone as a curing agent. The fracture toughness, tensile properties, and thermal properties of the prepared epoxy samples were evaluated and compared. When PTK was mixed with DGEBF, the fracture toughness was improved by 27% with 8.6% increased tensile strength compared to the untoughened DGEBF. When PTS was mixed with TGAP, the fracture toughness was improved by 51% without decreasing tensile properties compared to the untoughened TGAP. However, when PTK or PTS was mixed with other epoxy resins, the fracture toughness decreased or improved with decreasing tensile properties. This is attributed to the poor miscibility between the solid-state monomer of PTK (4,4'-bis(propynyloxy)benzophenone (PBP)) or PTS (4,4'-sulfonylbis(propynyloxy)benzene (SPB)) and the epoxy resin, resulting in the polymerization of low molecular weight PTK or PTS in epoxy resin. Therefore, the toughening effect of PTK or PTS can be maximized by the appropriate selection of epoxy resin based on the miscibility between PBP or SPB and the resin.

摘要

本研究考察了原位聚三唑酮（PTK）和聚三唑砜（PTS）增韧剂应用于各种环氧树脂（如双酚A二缩水甘油醚（DGEBA）、双酚F二缩水甘油醚（DGEBF）以及以3,3'-二氨基二苯砜为固化剂的三缩水甘油基氨基苯酚（TGAP））时的增韧效果。对制备的环氧样品的断裂韧性、拉伸性能和热性能进行了评估和比较。当PTK与DGEBF混合时，与未增韧的DGEBF相比，断裂韧性提高了27%，拉伸强度提高了8.6%。当PTS与TGAP混合时，与未增韧的TGAP相比，断裂韧性提高了51%，且拉伸性能未降低。然而，当PTK或PTS与其他环氧树脂混合时，断裂韧性降低或提高的同时拉伸性能下降。这归因于PTK的固态单体（4,4'-双（丙炔氧基）二苯甲酮（PBP））或PTS的固态单体（4,4'-磺酰基双（丙炔氧基）苯（SPB））与环氧树脂之间的相容性差，导致低分子量的PTK或PTS在环氧树脂中发生聚合。因此，基于PBP或SPB与树脂之间的相容性，通过适当选择环氧树脂，可以使PTK或PTS的增韧效果最大化。