Mechanical and flame retardant properties of isotactic polypropylene magnesium oxysulfate whisker composite

doi:10.1177/0892705717713073

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 盐湖资源综合利用工程技术中心

	Mechanical and flame retardant properties of isotactic polypropylene magnesium oxysulfate whisker composite
	Dang, Li; Nai, Xueying; Liu, Xin; Zhu, Donghai; Dong, Yaping; Li, Wu
刊名	JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
	2018-04
卷号	31 期号:4 页码:514-534
ISSN号	0892-7057
DOI	10.1177/0892705717713073
英文摘要	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.
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34437]
专题	青海盐湖研究所_盐湖资源综合利用工程技术中心
推荐引用方式 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.