机构地区: 华南理工大学化学与化工学院
出 处: 《湖南师范大学自然科学学报》 2006年第2期72-75,共4页
摘 要: 以甲苯为溶剂,过氧化二苯甲酰(BPO)为引发剂,通过自由基聚合,对PP进行氯化改性;研究了不同反应温度、反应时间、PP的浓度、BPO浓度以及氯气流动速率等因素对氯化度的影响,采用FTIR对产品结构进行了表征.分析了PP氯化机理.试验结果表明较佳的工艺条件为:反应温度t=90℃,反应时间t=180 min,引发剂浓度m(BPO)=0.4%,PP浓度βPP=0.08 kg/m3,氯气流动速率r(Cl2)=180 mL.min-1. polypropylene's chlorination modification was carried out by free radical process using toluence as solvent and benzoperoxide (BPO) as initiator ; effects of reaction temperature, time, concentration of PP and initiator , and flow rate of chlorine gas on the chloridizing degree were studied in detail. The product was characterized by Fourier transform infrared spectroscopy. The mechanism of chlorination modification of polypropylene was analyzed. The expenmental results showed that the optimized process conditions are the reaction temperature t = 90℃, reaction time t = 180 min, the concentration of initiator m (BPO) = 0.4 %, βpp = 0.08 kg/m^3, flow rate of chlorine gas r ( Cl2 ) = 180 mL· min^-1 .
领 域: [化学工程]