Synthesis and Characterization of Polyurethane Elastomers

2-Hydroxyethyl disulfide, chemically pure, Shanghai Macklin Biochemical Co., Ltd. (Shanghai, China); UV absorber UV–320, chemically pure, Shanghai, China, Shanghai Macklin Biochemical Co., Ltd.; dibutyltin dilaurate, chemically pure, Angene International Limited (Beijing, China); polytetramethylene ether glycol (PTMEG), MW 2000, Shanghai, China, Shanghai Macklin Biochemical Co., Ltd.; polytetramethylene ether glycol (PTMEG), MW 1000, Shanghai, China, Shanghai Macklin Biochemical Co., Ltd.; polypropylene glycol (PPG), MW 1000, Shanghai, China, Shanghai Macklin Biochemical Co., Ltd.; isophorone diisocyanate (IPDI), chemically pure, Shanghai, China, Shanghai Macklin Biochemical Co., Ltd.; acetone, analytically pure, Xiyu Chemical Technology Co., Ltd. (Shandong, China); 1,4-Butanediol (BDO), chemically pure, Tianjin Bodie Chemical Co., Ltd. (Tianjin, China); polyethylene glycol (PEG), chemically pure, Shanghai, China, Shanghai Macklin Biochemical Co., Ltd.; polyethylene glycol monomethyl ether (MPEG), chemically pure, Shanghai, China, Shanghai Macklin Biochemical Co., Ltd.; polyethylene glycol (PEG), chemically pure, Shanghai, China, Shanghai Macklin Biochemical Co., Ltd.; hydrogenated diphenylmethane diisocyanate (HMDI), chemically pure, Shanghai, China, Shanghai Macklin Biochemical Co., Ltd.
Oil bath with digital display for temperature control, single hole, Longkou Xianke Instrument Co., Ltd. (Shandong, China); precision-enhanced stirrer, JJ-1, Guohua Electric Appliance Co., Ltd. (Henan, China); constant temperature and humidity incubator, JWS-150, Shanghai Shanlian Equipment Co., Ltd. (Shanghai, China); electronic balance, AR3130, Aohaus Corporation (Shanghai, China); muffle furnace, SX2-4-10, Longkou Xianke Instrument Co., Ltd. (Shandong, China) of Shandong Province; electronic balance, AR3130 (Shanghai, China), Aohaus Corporation; universal color difference meter, JZ-300, Shenzhen Jinzhun Instrument Equipment Co., Ltd. (Shenzhen, China); yellowing resistance tester (light bulb type), HZ-3017, Dongguan Dexiang Instrument Co., Ltd. (Guangdong, China); digital display viscometer with microcomputer control, NDJ-5S, Shanghai Yutong Instrument and Meter Factory (Shanghai, China); blast drying oven, DHG-9080, Changzhou Jintan Precision Instrument Manufacturing Co., Ltd. (Jiangsu, China); multi-purpose vacuum pump with circulating water, SHZ-D(III), Gongyi Honghua Instrument Equipment Industry and Trade Co., Ltd. (Henan, China); vacuum drying oven, DZF-6020, Shanghai Xinmiao Medical Device Manufacturing Co., Ltd. (Shanghai, China); computer-controlled electronic universal testing machine, UTM2502HB, Shenzhen Sansi Horizontal and Vertical Technology Co., Ltd. (Shenzhen, China); cycle dispersing device, BT-600, Dandong Baite Instrument Co., Ltd. (Liaoning, China).