不同结构的大豆油基聚氨酯泡沫的制备与性能

Preparation and Performance of Soybean Oil-Based Polyurethane Foam with Different Structures

以正戊醇和异戊醇开环环氧大豆油(ESO)为原料,制备得到大豆油基多元醇Polyol-A、Polyol-I,分别与聚合MDI(pMDI)反应,得到2种大豆油基聚氨酯泡沫A-PUF、I-PUF。采用红外光谱和核磁共振对环氧大豆油和大豆油基多元醇的结构进行了表征,通过硬度测试、热重分析(TG)、扫描电镜(SEM)、压陷测试等方法对泡沫的各项性能进行了测试。结果表明,随着大豆油基多元醇含量的增加,泡沫的热稳定性和抗压陷能力均得到了提高,且Polyol-A制备的泡沫性能优于Polyol-I制备的泡沫。

The soybean oil-based polyols polyol-A and polyol-I were prepared by ring-opening epoxidized soybean oil(ESO)with n-pentanol and isoamyl alcohol.Two soybean oil-based polyurethane foams A-PUF and I-PUF were synthesized by reaction with polymerized MDI(pMDI),respectively.The structures of epoxidized soybean oil and soybean oil-based polyols were characterized by FTIR and~1H-NMR,and the various properties of the foam were tested by means of hardness test,thermogravimetric analysis(TG),scanning electron microscope(SEM),and indentation test.The results showed that with the increase of soybean oil-based polyol content,the thermal stability and compression resistance of the foam had been improved,and the foam performance of polyol-A was better than that of polyol-I.