Curing acceleration of cyanate ester resin by a phenolic compound having a tertiary amino group at the ortho-position
Curing acceleration of cyanate ester resin by a phenolic compound having a tertiary amino group at the ortho-position
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DOI：
10.1038/s41428-020-0380-3
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发表时间：
2020-06
期刊：
影响因子：
2.8
通讯作者：
Keisuke Izu;Yuichiro Tokoro;T. Oyama
中科院分区：
文献类型：
--
作者：
Keisuke Izu;Yuichiro Tokoro;T. Oyama
为了开发一种能有效固化氰酸酯树脂的新型有机催化剂，研究了不同酚类化合物对双酚A型氰酸酯（BADCY）固化反应的影响。差示扫描量热法（DSC）和傅里叶变换红外光谱（FT-IR）分析表明，邻二甲氨基甲基苯酚（o-DAMP）是促进BADCY固化的高效催化剂，其加入使BADCY的最终固化温度降低到180 °C。发现ofo-DAMP的促进作用是由于在分子的邻位存在酸性酚羟基和碱性（二甲氨基）甲基。DAMP的加入提高了BADCY树脂固化物的模量、强度和断裂韧性。固化物的力学性能和热性能可以通过改变fo-DAMP的用量来调节。
To develop a novel organic catalyst that can effectively cure cyanate ester resins, the effects of incorporating various phenolic compounds on the curing of bisphenol A dicyanate (BADCY) was investigated. Differential scanning calorimetry (DSC) and Fourier transform infrared (FT-IR) spectroscopy analyses revealed thato-(dimethylamino)methylphenol (o-DAMP) was a highly effective catalyst for accelerating the curing of BADCY, and the addition ofo-DAMP reduced the final curing temperature of BADCY to 180 °C. The promoting effect ofo-DAMP was found to be due to the presence of an acidic phenolic OH group and a basic (dimethylamino)methyl group at the ortho-positions of the molecule. The addition ofo-DAMP improved the modulus, strength and fracture toughness (KIC) of the cured BADCY resins. The mechanical and thermal properties of the cured resins could be adjusted by changing the amount ofo-DAMP.