888888
Chinese
English
-Company profile
-Corporate culture
-Qualification Honor
-Development History
one of the top companies in world that integrating R&D, production and selling of PU curatives with advanced green technology
-Scientific research carrier
-R & D base
-Innovation results
focusing on the technology innovation and quality improvement to establish the first-class PU curatives brand.
-Products
-Technology corner
has 4 types of curatives including diamines, aromatic glycols, alcohol amines, latent curing agents which has a wide use in PU coatings, adhesives, pavement, elastomers and so on.
-HSE
-Person-centered care
One of the earliest companies produce MOCA that complies with REACH in China
-About talents
-Staff style
-Recruitment
Xiangyuan can provide a great career development platform for employees with the globalization and development.
-Company news
-Industry news
-Media link
We would like to share more information with you about PU market, governmental policy, technical support and the prospect of PU development
-Contact
-Message
Thank you for your attention. Welcome to inquire
Home »Products »/uploads/20210112/f28f8ccab39a8f9c4ff2460fcaf4c963.jpg
2021-10-14 1735
潜固化剂的固化机理和传统的湿固化机理不同,添加潜固化剂的湿固化聚氨酯体系,水分优先与体系中的潜固化剂反应并生成含活泼氢的基团(而不是与异氰酸酯基反应),活泼氢再与异氰酸酯基反应固化,整个过程不产生二氧化碳气体,因此可避免诸如表面模糊(低光泽)、针孔及起泡等表面缺陷。
醛(酮)亚胺与水反应得到二胺和醛(或酮)。噁唑烷与水反应得到β-醇胺和酮(或醛)。
反应式如下:
Prev:谈谈噁唑烷
Next:潜固化剂的作用