功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2014年
19期
19020-19025
,共6页
丙烯腈-丁二烯-苯乙烯共聚物(ABS)%等规聚丙烯(iPP)%复合材料%β-成核作用%结晶性能
丙烯腈-丁二烯-苯乙烯共聚物(ABS)%等規聚丙烯(iPP)%複閤材料%β-成覈作用%結晶性能
병희정-정이희-분을희공취물(ABS)%등규취병희(iPP)%복합재료%β-성핵작용%결정성능
acrylonitrile-butadiene-styrene(ABS)%isotactic polypropylene(iPP)%composites%β-nucleating effect%crystallization property
采用熔融挤出法制备了一系列不同 ABS 含量的 ABS/iPP 复合材料.研究了该复合材料的结晶性能和力学性能.广角 X 射线衍射扫描结果表明, ABS 诱导 iPP 在β(300)面结晶,在 ABS 含量为5％(质量分数)时,复合材料β晶的相对含量为0．45；DSC结果表明,ABS 的加入能提高复合材料的结晶温度和结晶速率；偏光显微镜观察结果表明,在 iPP 中加入ABS 后,iPP 在 ABS 表面附着生成β球晶.ABS 的加入能在一定程度上提高 iPP 的机械性能,在 ABS 含量为5％(质量分数)时,复合材料的抗冲击强度提高了16％,热变形温度提高了5℃.综上所述,ABS 可以作为 iPP 的大分子β成核剂,促进β-iPP 晶的成长.
採用鎔融擠齣法製備瞭一繫列不同 ABS 含量的 ABS/iPP 複閤材料.研究瞭該複閤材料的結晶性能和力學性能.廣角 X 射線衍射掃描結果錶明, ABS 誘導 iPP 在β(300)麵結晶,在 ABS 含量為5％(質量分數)時,複閤材料β晶的相對含量為0．45；DSC結果錶明,ABS 的加入能提高複閤材料的結晶溫度和結晶速率；偏光顯微鏡觀察結果錶明,在 iPP 中加入ABS 後,iPP 在 ABS 錶麵附著生成β毬晶.ABS 的加入能在一定程度上提高 iPP 的機械性能,在 ABS 含量為5％(質量分數)時,複閤材料的抗遲擊彊度提高瞭16％,熱變形溫度提高瞭5℃.綜上所述,ABS 可以作為 iPP 的大分子β成覈劑,促進β-iPP 晶的成長.
채용용융제출법제비료일계렬불동 ABS 함량적 ABS/iPP 복합재료.연구료해복합재료적결정성능화역학성능.엄각 X 사선연사소묘결과표명, ABS 유도 iPP 재β(300)면결정,재 ABS 함량위5％(질량분수)시,복합재료β정적상대함량위0．45；DSC결과표명,ABS 적가입능제고복합재료적결정온도화결정속솔；편광현미경관찰결과표명,재 iPP 중가입ABS 후,iPP 재 ABS 표면부착생성β구정.ABS 적가입능재일정정도상제고 iPP 적궤계성능,재 ABS 함량위5％(질량분수)시,복합재료적항충격강도제고료16％,열변형온도제고료5℃.종상소술,ABS 가이작위 iPP 적대분자β성핵제,촉진β-iPP 정적성장.
ABS/iPP composites were prepared by extrusion processing and its crystallization,mechanical proper-ties were studied.The result of WAXD showed that β-modification was induced with the help of ABS alongβ(300)lattice pland,and α-modification was restrained.When the content of ABS was 5wt%,the relative con-tent ofβ-crystal in iPP was 0.45,and the crystallinity was 66.94%.The results also showed that the relative content ofβ-crystal was hard to increase continually,because the crystalline rate was too fast for iPP chain seg-ment to adjust its chirality to formβ-crystal.It was found from DSC that the crystalline temperature and rate of iPP was increased with the adding of ABS,and the melting peak ofβ-crystal was appeared in the melting curve of ABS/iPP composites.It was observed in POM figures thatβ-crystal of iPP chain segment was crystallized be-long ABS chain segment.In addition,the mechanical properties and heat distortion temperature were increased. In conclusion,ABS can be used as polymericβ-nucleating agent for inducing iPP intoβ-modification and impro-ving the properties of iPP.
