CAJ | 학술논문

以新型的超支化聚磷酸酯(HPPE)对聚丙烯(PP)进行共混改性,研究了HPPE的用量和分子量对PP/HPPE复合材料性能的影响,还通过扫描电子显微镜(SEM)观察其试样冲击断面的微观形态并研究其增韧机理.结果表明,HPPE对PP/HPPE复合材料的冲击强度影响明显,当HPPE-1用量为3份时冲击强度可提高143.56%;熔体流动速率也有提高,但拉伸强度、弯曲强度和维卡软化点温度有微小下降,其增韧机理为两相"海-岛"结构增韧.
이신형적초지화취린산지(HPPE)대취병희(PP)진행공혼개성,연구료HPPE적용량화분자량대PP/HPPE복합재료성능적영향,환통과소묘전자현미경(SEM)관찰기시양충격단면적미관형태병연구기증인궤리.결과표명,HPPE대PP/HPPE복합재료적충격강도영향명현,당HPPE-1용량위3빈시충격강도가제고143.56%;용체류동속솔야유제고,단랍신강도、만곡강도화유잡연화점온도유미소하강,기증인궤리위량상"해-도"결구증인.
A kind of composite material was prepared by novel hyperbranched polyphosphate ester (HPPE) and PP. The effect of HPPE content and molecular weight (or generation) on performance of HPPE/PP composite was studied. SEM was used for observing micro-morphology of their impact fracture surface and studying toughening mechanism. The results showed that the impact strength and melt flow index of HPPE/PP systems increased remarkably for the addition of HPPE, and the maximum impact strength was 2.43 times that of pure PP while containing 3phr HPPE-1 in HPPE-1/PP composite material, but some performance, such as tensile strength, flexural strength, Vicat temperature of HPPE/PP systems decreased a little to some extent.