摘要
以环氧大豆油和甲醇为原料,自制的固体酸(SO42-/ZrO2-SiO2)为催化剂,制备出大豆油基多元醇Soy-190,将其与石油基聚醚多元醇按照不同比例混合后与异氰酸酯MDI反应制得聚氨酯弹性体。通过红外光谱、机械性能测试、热重、DMA、DSC等方法对Soy-190结构和弹性体性能进行表征。结果表明,Soy-190与普通聚醚多元醇在反应活性和稳定性方面具有很好的一致性;随着Soy-190添加量的增大,聚氨酯弹性体的硬度、冲击弹性、拉伸强度、撕裂强度、热稳定性及耐水性均呈现提高趋势,而其断裂伸长率则逐渐降低。
Soy-based polyols Soy-190 was prepared from epoxidized soybean oil and methanol in the presence of a self-made solid acid SO42-/ZrO2-SiO2 catalyst. Series of polyurethane elastomers were obtained by blended Soy-190 with polyether polyol in various ratios and reacted with diisocyanate MDI-100. The structure and properties of the e- lastomers were analyzed and characterized by FF-IR, Mechanical test, TG, DMA and DSC. The results showed that Soy-190 possessed similar reactivity and phase stability to polyether polyols. Moreover, with Soy-190 content increas- ing, polyurethane elastomer exhibited better hardness, impact elasticity, tensile strength, tear strength, thermal sta- bility and water-resistance than those of pure polyether polyols, while the elongation at break decreased.
出处
《聚氨酯工业》
2012年第6期13-16,共4页
Polyurethane Industry
关键词
环氧大豆油
固体酸催化剂
大豆油基多元醇
聚氨酯弹性体
epoxidized soybean oil
solid superacid catalyst
soybean oil polyol
polyurethane elastomer
