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Mechanical and flame retardant properties of isotactic polypropylene/magnesium oxysulfate whisker composite
Dang, Li1,2,3; Nai, Xueying2; Liu, Xin2; Zhu, Donghai2; Dong, Yaping2; Li, Wu1
2018-04-01
发表期刊JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
卷号31期号:4页码:514-534
文章类型Article
摘要Isotactic polypropylene (iPP) composites containing magnesium oxysulfate whisker (MOSw) or lauric acid-modified MOSw (LA-MOSw) were prepared via melt mixing in a torque rheometer. Scanning electron microscopy pictures showed that the interface between MOSw and iPP matrix was defined, whereas a vague interface was seen in the iPP-LA-MOSw composites. Mechanical properties of these two groups of composites were investigated in terms of tensile, notched impact, and flexural behavior aspects for the purposes of studying toughening effect of MOSw and LA-MOSw. Tensile results showed that yield strength of composites further reduced with the presence of LA, indicating the decrease in interfacial interaction bewteen iPP matrix and MOSw. As such, LA-MOSw performed better than MOSw in toughening of iPP matrix. Flexural strength and modulus of iPP-MOSw composites increased sharply with the increase in MOSw content, while less dependence on the LA-MOSw content indicated that MOSw was deemed beneficial to increase the stiffness. In addition, flammability properties were investigated by cone calorimetry experiment. The results showed that the peak heat release rate apparently reduced with addition of MOSw or LA-MOSw. Besides, iPP-LA-MOSw composites showed higher specific extinction area values than iPP-MOSw composites, which meant the weaker smoke suppression effect of LA-MOSw. It was chiefly because of the incomplete combustion caused by the continuous and complete charred (MgO) shield. The presence of LA was another possible reason.
关键词Magnesium Oxysulfate Whisker Mechanical Properties Toughness Stiffness Flame Retardant
WOS标题词Science & Technology ; Technology
关键词[WOS]CRYSTALLIZATION BEHAVIOR ; FIRE PERFORMANCE ; NANOCOMPOSITES ; BLENDS ; DEPENDENCE ; MORPHOLOGY ; CELLULOSE
收录类别SCI
语种英语
WOS研究方向Materials Science
WOS类目Materials Science, Composites
WOS记录号WOS:000429887800006
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6451
专题青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
作者单位1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources Chem, Xining 810008, Qinghai, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining, Qinghai, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
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GB/T 7714
Dang, Li,Nai, Xueying,Liu, Xin,et al. Mechanical and flame retardant properties of isotactic polypropylene/magnesium oxysulfate whisker composite[J]. JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS,2018,31(4):514-534.
APA Dang, Li,Nai, Xueying,Liu, Xin,Zhu, Donghai,Dong, Yaping,&Li, Wu.(2018).Mechanical and flame retardant properties of isotactic polypropylene/magnesium oxysulfate whisker composite.JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS,31(4),514-534.
MLA Dang, Li,et al."Mechanical and flame retardant properties of isotactic polypropylene/magnesium oxysulfate whisker composite".JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS 31.4(2018):514-534.
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