大豆油树脂基泡沫塑料的力学性能与生物降解性研究

用丙烯酸酯化环氧大豆油(AESO)和甲基丙烯酸甲酯(MMA)经自由基共聚合制得一种新型的植物油基泡沫塑料.对AESO/MMA泡沫塑料的压缩性能的各种影响因素进行了细致研究,结果表明,所得泡沫塑料的压缩性能取决于AESO/MMA的比例、引发剂和促进剂的浓度.AESO泡沫塑料具有与传统不饱和聚酯泡沫塑料相似的压缩强度,而且比后者具有更高的韧性,同时这类植物油基泡沫塑料有着良好的生物降解性.

MECHANICAL PERFORMANCE AND BIODEGRADABILITY OF THE FOAMS DERIVED FROM SOYBEAN OIL RESIN

Plastic foams based on plant oil resin were prepared via radical copolymerization of acrylated epoxidized soybean oil(AESO) and methyl methylacrylate(MMA).Effects of AESO/MMA ratio and dosages of initiator(BPO) and accelerant(N,N-dimethyl aniline) on compression performance of the plastic foams were carefully studied.It was found that the foam properties depended on the content of MMA and network structure of the cured resin.The foams synthesized with higher MMA content,or cured by higher BPO concentration or lower accelerant concentration exhibited higher compressive resistance.On the whole,the proposed technical route was able to generate foams with high AESO fraction,which helped to control cost and properties of the end-products.The resultant plastic foams possessed compression strength similar to that of conventional unsaturated polyester foams,but higher toughness.Moreover,the AESO/MMA plastic foams were proved to be biodegradable during soil burial.According to the above results,it is known that the present plastic foams made from renewable resources are capable for replacing conventional petrol-based foams in practical applications.