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以纯度≥99.5%的缩水甘油硝酸酯(GN)为原料,采用阳离子聚合,合成了两种分子量3000左右的聚缩水甘油醚硝酸酯(PGN)粘合剂。采用红外(IR)、核磁(NMR)和凝胶渗透色谱(GPC)表征了它们的结构。测试了PGN的主要性能。研究了PGN与常用异氰酸酯[多苯基多亚甲基多异氰酸酯(PAPI)、改性六亚甲基多异氰酸酯(N-100)、甲苯二异氰酸酯(TDI)、二环己基甲烷二异氰酸酯(HMDI)]的固化反应。结果表明,在催化剂二月桂酸二丁基锡(DBTDL)或三苯基铋(TPB)作用下,PGN可与PAPI、N-100、TDI、HMDI等快速反应固化。固化试样经60℃贮存60天,邵A硬度无明显下降。
Two polyglycidyl ether nitrate (PGN) binders with molecular weight of about 3000 were synthesized by cationic polymerization using glycidyl nitrate (GN) with purity ≥99.5% as raw material. Their structures were characterized by infrared (IR), nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC). Test the main performance of PGN. The effects of PGN with common isocyanates [PAPI, modified hexamethylene polyisocyanate (N-100), toluene diisocyanate (TDI), dicyclohexylmethane diisocyanate (HMDI) ] Curing reaction. The results show that PGN can be rapidly reacted and cured with PAPI, N-100, TDI, HMDI and so on under the action of DBTDL or triphenylbismuth (TPB). Cured samples were stored at 60 ℃ for 60 days, Shore A hardness no significant decrease.