公开(公告)号：US20240182643A1

公开(公告)日：2024-06-06

申请号：US18241913

申请日：2023-09-04

Applicant: Wuhan Institute of Technology

Inventor： Lijuan SHI ,  Qun YI ,  Yi HUANG ,  Qiuxian HONG ,  Mingyue QIU ,  Haonan WU ,  Bohao LI ,  Hengjun CHEN

IPC: C08G71/04 ,  C08J9/08 ,  C08J9/14

CPC classification number: C08G71/04 ,  C08J9/08 ,  C08J9/141 ,  C08G2101/00

Abstract: A rigid non-isocyanate polyurethane foam and a preparation method therefor are provided. According to the present application, a rigid epoxide is firstly reacted with carbon dioxide to obtain rigid cyclic carbonate, then the product is reacted with diamine to obtain rigid non-isocyanate polyurethane, and the rigid non-isocyanate polyurethane is mixed with a foaming agent for foaming to obtain rigid non-isocyanate polyurethane foam. The present application improves the mechanical property of non-isocyanate polyurethane by optimizing the structures and groups of raw materials; according to the present application, mild reaction conditions such as atmospheric pressure and low temperature are used, and the amounts of reactants and foaming agents are adjusted, so that the reaction is significantly enhanced, and an excellent foaming effect is achieved.