PC/TPU合金的断裂韧性  

FRACTURE TOUGHNESS OF PC/TPU BLEND

作　　者：郑昌仁[1] 孙清[1] 李洪 

机构地区：[1]南京化工大学高分子系

出　　处：《高分子材料科学与工程》1998年第6期132-134,共3页Polymer Materials Science & Engineering

基　　金：江苏省应用基础基金

摘　　要：用Ｊ－积分法研究了聚碳酸酯（ＰＣ）及聚碳酸酯／热塑性聚氨酯弹性体（ＰＣ／ＴＰＵ）合金的断裂韧性。实验结果表明，ＴＰＵ加入ＰＣ中，可以有效地提高ＰＣ抵抗裂纹产生及发展的能力。共混物中加入第三组分后，这种能力得到进一步地提高。其中以配比为ＰＣ／ＴＰＵ／Ｅ＝８０／２０／７的共混物的断裂韧性最好，抵抗裂纹产生与发展的能力最强。Ｊ－积分法是研究高分子材料断裂韧性的有效手段。To improve the ability of resistance to crack and prolong the lifetime of polycarbonate/thermal polyurethane(PC/TPU) blend, the fracture toughness of the blend was investigated by J integral method based on the study of the mechanical properties and the morphology properties. The results show that: TPU can be improve greatly the resistance to crack initiation and extension of PC. After the third component(especial the elastomer E) were added into the blneds, the ability was improved greatly. And when PC∶TPU∶elastomer E=80∶20∶7, the fracture toughness of the blned is the best. J integral method is an effective method to study the fracture toughness of polymer materials.

关 键 词：聚碳酸酯 热塑性聚氨酯 弹性体 断裂 韧性 

分 类 号：TQ334.9[化学工程—橡胶工业]