【作者】 高新；

【导师】 王鉴；

【作者基本信息】 东北石油大学 ， 化学工程， 2011， 硕士

【摘要】 本研究用固相接枝法对PP进行双单体接枝改性。通过接枝丙烯酸乙酯(EA)和马来酸酐(MAH)考察接枝反应温度、时间、引发剂用量、聚丙烯粒径、单体配比、单体用量对接枝率的影响进行研究,通过测定不同条件下产物的接枝率,对接枝工艺条件进行了优化。本研究对单一单体接枝、双单体接枝进行了研究,并通过润湿角、熔体流动速率(MFR)和力学性能测试、以及傅里叶变换红外光谱(FTIR)和差示扫描量热仪(DSC)等分析手段,对接枝产物进行了表征。结果表明:单一单体接枝的最佳反应条件为:PP10.00g,单体0.70g,引发剂0.03g,界面剂二甲苯1mL,分散剂乙醚1mL,在85℃(引发剂1)和100℃(引发剂2)下反应2h。双单体接枝的最佳反应条件为:PP10.00g,单体0.60g,引发剂0.03g,复配双单体质量比WEA:WMAH=7:3,界面剂二甲苯1mL,分散剂乙醚1mL,在85℃(引发剂1)下反应2h。表征测试结果表明:双单体被成功地接枝到PP上;接枝产物的热性能得到明显改善;接枝产物的水润湿角比原料降低,极性提高;接枝产物的MFR和力学性能与纯PP性能接近。更多还原

【Abstract】 The binary monomer grafting technology by solid-grafting method of PP was researched in this research. By studying reaction temperature, time, initiator, polypropylene particle size, monomer ratio and the amount of grafting monomer to measure grafting rate of product under the different conditions and identify the main factors of impaction of graft, the last optimizing graft process. The structure and thermal property of grafted polymers were characterized through FTIR, DSC, contact-angle and melting flow rate (MFR).The results show that:The optimum single monomer grafting condition is that, PP 10.00g, monomer 0.70g and initiator 0.03g, interfacial agent xylene 1mL, dispersant agent ether 1mL, reaction 2h at 85℃(initiator 1) and 100℃(initiator 2).The optimum binary monomer grafting condition is that, PP 10.00g, monomer 0.60g and initiator 0.03g, WEA:WMAH=7:3 of binary-monomer, interfacial agent xylene 1mL, dispersant agent ether 1mL, reaction 2h at 85℃(initiator 1).Characterization test results of grafted products indicate that the monomer were indeed grafted onto PP chains. Its thermal properties had been improved obviously. Its contact-angle was lower than pure PP ,which proved that hydrophilicity had been significantly improved. And the grafting products remain its versatile physical properties.更多还原