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在双螺杆挤出机上研制丙烯酸(AA)接枝的聚丙烯(PP).在研制过程中,以自由基机理为基础,讨论共混温度和反应物组成等对接枝率的影响.通过改变双螺杆挤出机速度实现对接枝率的控制.“,”Polypropylene grafed with propenoic acid was prepared on Brabender The influnence of the reaction tem- perature time and the composition of the reaction mixtue on the graft have been studied on the basis free radical mecha- nism.