摘要
采用硬脂酸和乙酸酐对端羟基超支化聚酯的端基进行改性,并将其与端羟基聚丁二烯型聚氨酯(丁羟聚氨酯)形成互穿聚合网络。结果表明,硬脂酸改性超支化聚酯/丁羟聚氨酯互穿聚合物网络的最大强度和最大延伸率均比空白胶片提高了3倍以上,而乙酸酐改性的超支化聚酯与丁羟聚氨酯形成的互穿聚合物网络存在明显的相分离。
Hydroxyl terminated hyperbranched polyester was modified by stearic acid and acetic anhydride, the re- sultant products were interpenetrated with hydroxyl terminated polybutadiene polyurethane （HTPB-PU）. The result showed, stearic acid modified hyperbranched polyester interpenetrate with HTPB-PU making the tensile strength and elongation 3 times higher than that of control sample. However, acetic anhydride modified hyperbranched polyester was unmiscible with HTPB-PU.
出处
《化工新型材料》
CAS
CSCD
北大核心
2010年第4期61-63,73,共4页
New Chemical Materials
基金
火炸药行业青年基金项目(42001060202)
关键词
互穿聚合物网络
超支化聚酯
端基改性
聚氨酯
力学性能
interpenetrating polymer network, hyperbranched polyester, end-group modify, polyurethane, mechanical property
