WPP/PRCMR复合材料的制备及性能
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摘要
以硅烷偶联剂A0800对葛根中药废渣(PRCMR)进行表面改性,得到A0800-PRCMR填料,采用挤塑辊压成型工艺制备了废旧聚丙烯(WPP)/PRCMR复合材料。通过对复合材料理化性能的检测与微观结构的观察,研究了PRCMR用量对WPP/未改性PRCMR与WPP/A0800-PRCMR复合材料密度、吸水率、浸水前后的力学性能及微观结构的影响,结果表明,随着PRCMR用量的增加,WPP/未改性PRCMR与WPP/A0800-PRCMR的密度与吸水率明显增大,冲击强度、静曲强度、弹性模量在浸水前后均呈现先升高后降低的趋势,当PRCMR用量为20%时,复合材料的力学性能最佳。PRCMR用量相同时,WPP/A0800-PRCMR的密度更大,吸水率更小,浸水前后的力学性能均优于WPP/未改性PRCMR的力学性能,复合材料的微观形貌显示,A0800-PRCMR与WPP的共混相容性更佳,两相界面更加模糊。
A0800-PRCMR filler was obtained by modifying pueraia radix Chinese medicine residue( PRCMR) with silane coupling agent A0800 and waste polypropylene( WPP)/A0800-PRCMR composite was prepared by the extrusion roller depressing molding process. The effects of the amount of PRCMR on the density,water absorption,mechanical properties before and after water immersion and microstructure of the WPP/unmodified PRCMR and WPP/A0800-PRCMR composite were studied by examining the physical and chemical properties of the composite and observing their microstructure. The results showed that with the amount of PRCMR increasing,the density and water absorption of the WPP/unmodified PRCMR and WPP/A0800-PRCMR increased,meanwhile,the impact strength,static bending strength and elastic modulus before and after water immersion all increased first and then decreased. It also showed that the mechanical properties of the composite were best when the amount of PRCMR was 20%. With the same amount of PRCMR,compared with WPP/unmodified PRCMR,WPP/A0800-PRCMR had higher density,lower water absorption and better mechanical properties before and after water immersion. The microstructure of the materials showed that A0800-PRCMR had a better blending compatibility with WPP,and the two-phase interface was more blurred.
A0800-PRCMR filler was obtained by modifying pueraia radix Chinese medicine residue( PRCMR) with silane coupling agent A0800 and waste polypropylene( WPP)/A0800-PRCMR composite was prepared by the extrusion roller depressing molding process. The effects of the amount of PRCMR on the density,water absorption,mechanical properties before and after water immersion and microstructure of the WPP/unmodified PRCMR and WPP/A0800-PRCMR composite were studied by examining the physical and chemical properties of the composite and observing their microstructure. The results showed that with the amount of PRCMR increasing,the density and water absorption of the WPP/unmodified PRCMR and WPP/A0800-PRCMR increased,meanwhile,the impact strength,static bending strength and elastic modulus before and after water immersion all increased first and then decreased. It also showed that the mechanical properties of the composite were best when the amount of PRCMR was 20%. With the same amount of PRCMR,compared with WPP/unmodified PRCMR,WPP/A0800-PRCMR had higher density,lower water absorption and better mechanical properties before and after water immersion. The microstructure of the materials showed that A0800-PRCMR had a better blending compatibility with WPP,and the two-phase interface was more blurred.
引文
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[3]张玉琴,王志刚.葛根纤维渣中黄酮提取工艺优化及中试试验研究[J].中国酿造,2017,36(12):134-138.
[4]江立虹.葛根开发现状及前景分析[J].中国林副特产,2004(6):59-60.
[5]孟文文,黎金锋,姚晓华,等.葛根渣栽培糙皮侧耳配方筛选试验[J].中国食用菌,2014,33(6):29-31.
[6]刘洋洋,谢光银,吴长春,等.化学和超声波联合提取葛根纤维技术研究初探[J].中国麻业科学,2013,35(3):150-154.
[7]丁茜,章自寿,罗建新,等.废旧聚丙烯再资源化技术的发展现状[J].塑料工业,2017,45(5):16-19.
[8]锁浩,崔升,赵远见,等.废旧聚丙烯再制备用于新型建筑模板的研究进展[J].塑料科技,2017,45(9):108-114.
[9] TSERKI V,MATZINOS P,ZAFEIROPOULOS N E,et al. Development of biodegradable composites with treated and compatibilized lignocellulosic fibers[J]. Journal Applyied Polymer Science,2006,100(6):4703-4710.
[10]李卫红,包玉衡,雷文,等.中药渣复合材料研究现状[J].塑料,2017,46(5):81-83.
[11]贾婷,曲敏杰,郝俊喆,等. PB/红麻复合材料的力学性能研究[J].塑料科技,2018,46(3):62-65.
[12] CORRALES F,VILASECA F,LLOP M,et al. Chemical modification of jute fibers for the production of green-composites[J]. Journal of Hazardous Materials,2007,144(3):730-735.
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[14]王春红,任子龙,吴利伟,等.木质纤维对木塑复合材料力学性能和吸水性能的影响[J].塑料科技,2018,46(5):65-70.
[15] DHAKAL H N,ZHANG Z Y,RICHARDSON M O W. Effect of water absorption on the mechanical properties of hemp fibre reinforced unsaturated polyester composites[J]. Composites Science and Technology,2007,67(7/8):1674-1678.
[16]康永,艾江.木粉/聚丙烯复合材料的力学性能研究[J].橡塑技术与装备,2017,43(4):23-29.
[17]李雅丽,付新,高锦红,等.木质纤维表面改性对木塑复合材料力学性能的影响[J].表面技术,2014,43(5):33-36.
[18] GENG Y,LABORIE M G. The impact of silane chemistry conditions on the properties of wood plastic composites with low density polyethylene and high wood content[J]. Polymer Composites,2010,31(5):897-905.
[19]陈政豪,李锦琦,田兰馨,等.秸塑复合材料界面改性研究现状与展望[J].木材加工机械,2017,28(3):42-48.
[20]姜洪丽,董建,周经纶,等.界面改性对秸秆粉/PE-HD复合材料性能和热降解特性的影响[J].塑料,2015,44(6):79-81.
[21] WEI L,MCDONALD A G,FREITAG C,et al. Effects of wood fiber desertification on properties,weather ability and biodur ability of wood plastic composites[J]. Polymer Degradation and Stability,2013,98(7):1348-1361.
[22]代少俊,张峰,侯贵华,等.芦竹/聚丙烯木塑复合材料的制备[J].塑料,2016,45(3):7-9.