改性剂种类对磷石膏填充PC/ABS的效果研究
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摘要
采用硅烷偶联剂KH570、钛酸酯偶联剂311及硬脂酸钙3种改性剂对磷石膏进行高混改性,测试其吸油值及接触角变化,考察了改性剂差异对磷石膏表面改性效果的影响,分析了不同改性剂的性质差异对PC/ABS(聚碳酸酯/丙烯腈-丁二烯-苯乙烯共聚物)的力学影响。结果表明,3种改性剂与磷石膏表面发生反应提高其表面的疏水性能,硬脂酸钙较KH570及钛酸酯偶联剂疏水性能提升显著,接触角最高可达124.4°;改性磷石膏添加量为10%时,KH570改性磷石膏填充PC/ABS拉伸、弯曲及冲击性能较纯PC/ABS分别提升10.0%、33.9%、80.5%;扫描电镜显示KH570及钛酸酯311偶联剂改性磷石膏与基体相容性较好,硬脂酸钙改性磷石膏提高了磷石膏在PC/ABS基体材料中的分散性。
Phosphogypsum was highly modified by silane coupling agent KH570, titanate coupling agent 311 and calcium stearate. The oil absorption value and contact angle were tested. The difference of modifier was investigated. The influence of the surface modification effect of gypsum on the mechanical influence of PC/ABS on the difference of properties between different modifiers was analyzed. Studies have shown that the three modifiers react with the surface of phosphogypsum to improve the hydrophobic properties of the surface. Calcium stearate has a significant improvement in hydrophobic properties compared with KH570 and titanate coupling agents, and the contact angle is up to 124.4°; When the amount of gypsum added is 10%, the tensile, bending and impact properties of PC/ABS filled with KH570 modified phosphogypsum are 10.0%, 33.9% and80.5% higher than that of pure PC/ABS, respectively. Scanning electron microscope shows KH570 and titanate 311. The coupling agent modified phosphogypsum has good compatibility with the matrix, and the calcium stearate modified phosphogypsum improves the dispersibility in the matrix material.
Phosphogypsum was highly modified by silane coupling agent KH570, titanate coupling agent 311 and calcium stearate. The oil absorption value and contact angle were tested. The difference of modifier was investigated. The influence of the surface modification effect of gypsum on the mechanical influence of PC/ABS on the difference of properties between different modifiers was analyzed. Studies have shown that the three modifiers react with the surface of phosphogypsum to improve the hydrophobic properties of the surface. Calcium stearate has a significant improvement in hydrophobic properties compared with KH570 and titanate coupling agents, and the contact angle is up to 124.4°; When the amount of gypsum added is 10%, the tensile, bending and impact properties of PC/ABS filled with KH570 modified phosphogypsum are 10.0%, 33.9% and80.5% higher than that of pure PC/ABS, respectively. Scanning electron microscope shows KH570 and titanate 311. The coupling agent modified phosphogypsum has good compatibility with the matrix, and the calcium stearate modified phosphogypsum improves the dispersibility in the matrix material.
引文
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[2]MECHI N,KHIARI R,AMMAR M,et al.Preparation and application of Tunisian phosphogypsum as fillers in papermaking made from Prunusamygdalus and Tamarisks[J].Powder Technology,2017,32(3):287-293.
[3]GAN Z X,CUI Z,YUE H R,et al.An efficient methodology for utilization of K-feldspar and phosphogypsum with reduced energy consumption and CO2 emissions[J].Chinese Journal of Chemical Engineering,2016,24(11):1541-1551.
[4]SAADAOUI E,GHAZEL N,ROMDHANE C B,et al.Phosphogypsum:potential uses and problems-a review[J].International Journal of Environmental Studies,2017(1):1-10.
[5]YAN S,QIAN J,CHAI J,et al.Calciumsulphoaluminate cements made with phosphogypsum:Production issues and material properties[J].Cement&Concrete Composites,2014,48(4):67-74.
[6]张艳萍,高玉杰,宋亚丽,等.磷石膏晶须的制备及其在造纸中的应用[J].纸和造纸,2017,36(3):41-44.
[7]张杰,邹洪涛,毛海立,等.磷石膏改性及其在高分子材料中的应用[J].武汉工程大学学报,2017,39(6):611-615.
[8]潘玲.磷石膏的钛酸酯偶联剂表面改性[J].非金属矿,2017,40(6):30-32.
[9]龚维,覃亚群,罗容,等.改性石膏晶须对HDPE复合材料力学性能的影响[J].贵州师范大学学报(自然科学版),2018,36(5):36-41.
[10]石文建,刘忠进,赖寒,等.磷石膏晶须表面改性及其在PP中初步应用[J].塑料工业,2012,40(7):104-107.
[11]张宁,郭强.MAH-SBS和纳米Ca CO3复合改性PC-ABS共混材料[J].复合材料学报,2014,31(3):591-596.
[12]秦军,金翠霞,谢占金,等.两种偶联剂对磷石膏的球磨改性工艺[J].塑料,2010,39(5):18-20.
[13]张世鹏,铁生年.KH-570硅烷偶联剂表面改性微硅粉分散性研究[J].人工晶体学报,2018,47(7):1396-1401.
[14]刘江,石文建,刁梦娜,等.磷石膏晶须/PP复合材料的结构与性能研究[J].塑料科技,2013,41(5):71-74.
[15]罗容,肖芳,周元庆,等.HDPE/磷石膏晶须复合材料力学性能[J].工程塑料应用,2018,46(6):39-42.
[16]谢占金,石文建,金翠霞,等.晶种及晶型助长剂对磷石膏制备硫酸钙晶须的影响[J].环境工程学报,2012,6(4):1348-1352.
[17]金翠霞,秦军,于杰,等.不同粒径磷石膏的形貌与性质特征研究[J].无机盐工业,2010,42(6):44-46.