硅灰石填充阻燃ABS复合材料的性能研究
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摘要
采用熔融共混的方法制备了硅灰石填充阻燃丙烯腈-丁二烯-苯乙烯共聚物(ABS)复合材料,研究了硅灰石粒径及含量、偶联剂以及加工方式对复合材料力学、外观、阻燃性和成型性的影响。结果表明:硅灰石粒径越大,复合材料的性能和外观越差;0.5%以上的氨基硅烷偶联剂能明显提高复合材料的性能和外观,扫描电子显微镜(SEM)照片显示,该偶联剂能提高硅灰石与树脂基材的相容性;采用侧喂硅灰石方式加工,能提高其保留长度,改善复合材料性能;随着硅灰石添加量的增加,复合材料的缺口冲击强度和光泽度降低,弯曲模量升高,阻燃性也有一定提升,同时,复合材料的熔体流动速率增大,尺寸稳定性提升,每增加1%硅灰石,流动方向线性热膨胀系数(CLTE)降低约2μm/(m·℃)。
Wollastonite filled flame retardant acrylonitrile-butadiene-styrene copolymer(ABS) composites were prepared by melt blending. The effects of particle size and content of wollastonite, coupling agent and processing methods on the mechanical properties, appearance, flame retardancy and formability of the composites were studied. The results show that the larger the particle size of wollastonite, the worse the properties and appearance of the composites. More than 0.5% amino silane coupling agent can obviously improve the properties and appearance of composite materials. Scanning electron microscopy(SEM) photos show that the coupling agent can improve the compatibility of wollastonite with resin matrix. Side-feeding wollastonite can improve the retention length and properties of composites. With the increase of wollastonite content, the notched impact strength and glossiness of composites decrease, the bending modulus increases, and the flame retardancy also increases. At the same time, the melt flow rate of composites increases and the dimensional stability increases. For each increase of 1% wollastonite, the flow direction linear thermal expansion coefficient(CLTE) decreases by about 2 μm/(m·℃).
Wollastonite filled flame retardant acrylonitrile-butadiene-styrene copolymer(ABS) composites were prepared by melt blending. The effects of particle size and content of wollastonite, coupling agent and processing methods on the mechanical properties, appearance, flame retardancy and formability of the composites were studied. The results show that the larger the particle size of wollastonite, the worse the properties and appearance of the composites. More than 0.5% amino silane coupling agent can obviously improve the properties and appearance of composite materials. Scanning electron microscopy(SEM) photos show that the coupling agent can improve the compatibility of wollastonite with resin matrix. Side-feeding wollastonite can improve the retention length and properties of composites. With the increase of wollastonite content, the notched impact strength and glossiness of composites decrease, the bending modulus increases, and the flame retardancy also increases. At the same time, the melt flow rate of composites increases and the dimensional stability increases. For each increase of 1% wollastonite, the flow direction linear thermal expansion coefficient(CLTE) decreases by about 2 μm/(m·℃).
引文
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[2]赵义平,刘敏江,张环.ABS阻燃性能的研究[J].塑料科技,2002(6):17-19,57.
[3]穆秀玲,温丽艳,李文海.阻燃ABS树脂的研制[J].炼油与化工,2013,14(6):16-17.
[4]戴长禄,肖泽贵,昂志,等.硅灰石[M].北京:中国建筑工业出版社,1986:1-35.
[5]贺昌盛,任世荣.我国硅灰石及其填充塑料的研究进展[J].合成树脂及塑料,1997,20(2):79-82.
[6]刘伯元.硅灰石深加工及其产品在塑料中的应用[J].非金属矿,1997(3):21-23.
[7]袁世平,袁斌,徐凛然,等.活化硅灰石粉新型填料的研制以及在PVC电缆料上的应用[J].塑料工业,1994(1):46-48.
[8]王鉴,马震,孟庆明.硅灰石表面改性研究及应用[J].当代化工,2016,45(10):2 296-2 298.
[9]李馥梅,刘新海.硅灰石/玻纤增强尼龙6复合材料的研制[J].现代塑料加工应用,2003,15(5):1-4.
[10]陆波,王博识,Hafiz Muhammad Ramzan,等.尼龙66/针状硅灰石复合材料的制备和性能研究[J].工程塑料应用,2013,41(7):26-29.
[11]童奇勇,李光吉.PP/滑石粉导热绝缘复合材料的制备与性能研究[J].中国塑料,2008,22(7):32-36.
[12]牛艳萍.硅酸盐矿物/聚合物复合材料的制备及其界面机理的研究[D].武汉:武汉理工大学,2005.
[13]陶勇.硅灰石表面改性研究现状与应用进展[J].中国非金属矿工业导刊,2008(6):9-12,18.
[14]赵梓年,梁李爽,吕爱龙.偶联剂处理针状硅灰石及PP复合材料的研究[J].塑料工业,2014,42(12):87-92.
[15]于建,张庆,郭朝霞.硅灰石对HDPE树脂的复合效果及增强增韧条件[J].中国塑料,2001,15(4):61-64.