关键词: 稻壳基多元醇, 聚氨酯胶黏剂, 黏度, 力学性能

Abstract: Reactive liquefied rice husk polyols comes from the liquefaction of rice husk in oligomer polyols and we can synthesize polyurethane adhesive (PU) from liquefied rice husk polyols by reacting it with oligomer polyols,4,4-diphenyl methane diisocyanate (MDI) and small molecule cross-linking agent. In the synthesis of the PU,the pre-polymerization temperature,the amount of liquefied rice husk polyols,the species of oligomer polyols,R value (molar ratio of -NCO and -OH) and the type of small molecule cross-linking agent were investigated. The PU was analyzed by IR,viscosity and mechanical properties,and the results showed that when the pre-polymerization temperature was 70℃,polybutylene adipate 1000(PBA1000) was the raw materials,the amount of liquefied rice husk polyols was 10%,R value was 1.2 and the cross-linking agent was trimethylolpropane(TMP),we can obtain PU adhesive with excellent performance.

Key words: liquefied rice husk polyols, polyurethane adhesive, viscosity, mechanical properties