本文關(guān)鍵詞： 聚氨酯 固化劑 力學性能 填料 熱老化　出處：《水電能源科學》2017年09期 　論文類型：期刊論文

【摘要】：近年來對單組分聚氨酯材料的研究逐漸活躍,但固化時間較長,尤其使用疑為致癌物質(zhì)的莫卡(MOCA)作為固化劑,制約了其應(yīng)用范圍�；诖�,研究了其他固化劑對聚氨酯接縫材料的影響,通過添加填料改善其力學性能,進行實際工況中的弱堿性、熱老化模擬試驗。結(jié)果表明,添加3‰的三亞乙基二胺能使表干時間縮短3h,較大提高力學性能;填料的最佳添加比例為30%左右;老化溫度高于80℃時,材料的力學性能呈現(xiàn)緩慢下降趨勢,滿足弱堿性環(huán)境使用要求。
[Abstract]:In recent years, the research on one-component polyurethane materials has become more and more active, but the curing time is relatively long, especially the use of MOCA, a suspected carcinogen, as the curing agent, which restricts its application. The effects of other curing agents on polyurethane joint materials were studied. The mechanical properties of polyurethane joints were improved by adding fillers, and the simulation tests of weak alkalinity and thermal aging were carried out in actual working conditions. The addition of 3 鈥，

本文編號：1510892