CAJ | 학술논문

根据聚合物熔体结晶过程中存在过冷态的原理，在160℃时将1根或者2根全同聚丙烯（iPP）纤维引入到 iPP 基体中，制得 iPP 纤维／基体同质复合材料，同时，制备了具有相同热历史但无 iPP 纤维引入的试样，对3种试样进行拉伸性能测试对比。拉伸试验结果表明：无引入纤维的试样其力学性能较差，引入 iPP 纤维可使同质复合材料的拉伸强度得到明显的提高；引入单根 iPP 纤维所制得的试样的拉伸强度提高了21．8％，而引入2根 iPP 纤维所制得的试样的拉伸强度并没有明显的增加，这是由于纤维本身的性质和界面横晶的作用所致，说明 iPP 纤维本身及其诱导产生的界面结晶（横晶）对该复合材料的拉伸强度产生较大影响。
근거취합물용체결정과정중존재과랭태적원리，재160℃시장1근혹자2근전동취병희（iPP）섬유인입도 iPP 기체중，제득 iPP 섬유／기체동질복합재료，동시，제비료구유상동열역사단무 iPP 섬유인입적시양，대3충시양진행랍신성능측시대비。랍신시험결과표명：무인입섬유적시양기역학성능교차，인입 iPP 섬유가사동질복합재료적랍신강도득도명현적제고；인입단근 iPP 섬유소제득적시양적랍신강도제고료21．8％，이인입2근 iPP 섬유소제득적시양적랍신강도병몰유명현적증가，저시유우섬유본신적성질화계면횡정적작용소치，설명 iPP 섬유본신급기유도산생적계면결정（횡정）대해복합재료적랍신강도산생교대영향。
By introducing single or double isotactic polypropylene (iPP)fibers into a supercooled molten iPP matrix at 160 ℃,iPP fiber-matrix homogeneous composites were prepared.At the same time,pure iPP samples with matching thermal histories were prepared.Tensile testing of these samples was performed for comparison.Testing revealed that the tensile strength of pure iPP samples keeps a constant value around 7.3 MPa.However,it was found that the introduction of iPP fibers improved the tensile strength of fiber-matrix homogeneous composites significantly.When single iPP fiber was introduced,the tensile strength of the samples improved by 21.8%;when double iPP fibers were introduced,the tensile strength of the samples has no significant change.These results suggest that iPP fibers and induced interface crystallization morphology (transcrystallization)have a signif-icant influence on the tensile strength of fiber-matrix homogeneous composites.