利用单螺杆挤出机和平板硫化机制备了聚苯乙烯/纳米二氧化钛(PS/纳米TiO2)的共混物。研究了PS/纳米TiO2(100/1.5)中聚苯乙烯接枝马来酸酐(PS-MAH)加入量对共混物的拉伸强度、冲击强度、微观结构的影响。结果表明:当PS-MAH加入PS/纳米TiO2中20g时,共混物的拉伸强度达到最大值。紫外光照射实验结果表明,PS-MAH的加入可有效地提高PS/纳米TiO2复合材料的抗老化性能,与PS/TiO2复合材料相比拉伸强度提高30%。
Polystyrene (PS)/nano titanium dioxide (TiO2) composites were prepared by using a single screw extruder and a hydraulic press.The influences of different amount of polystyrene grafted maleic anhydride (PS-MAH) on the tensile strength,impact strength and microstructure of PS/TiO2 (100/1.5) composites were investigated.The results showed that the tensile strength of PS/TiO2 reached the maximum value when added PS-MAH was 20g.The results of UV irradiation showed that the addition of PS-MAH could effectively improve the anti-aging properties of PS/TiO2 composites,and the tensile strength of PS/PS-MAH/TiO2 increased by 30% compared with that of PS/TiO2 composites.
[1] 周大纲,谢鸽成.塑料老化与防老化技术[M].北京:中国轻工业出版社,1992,40-47.
[2] 曹建军,郭刚,汪斌华,等.金红石型纳米TiO2在聚丙烯塑料中的抗老化应用研究[J].钢铁钒钛,2004,25(2):6-11.
[3] 曹建军,郭刚,汪斌华,等.纳米TiO2/PP复合材料的研制及其抗老化机理分析[J].工程塑料应用,2004,32(7):43-46.
[4] Jin W K,Jong W S,Ji H B,et al.Titanium dioxide/poly(methyl methacrylate) composites microspheres prepared by in situ suspension polymerization and their ability to protect against UV rays[J].Colloid Polymer Science,2002,280:584.
[5] 门艳茹,杨贤金,朱胜利,等.纳米TiO2改性及其掺杂聚苯乙烯性能的研究[J].功能材料,2005,36(12):1927-1930.
[6] 赵彦保,周静芳,吕莹,等.PS/TiO2复合纳米微球的制备和结构表征[J].物理化学学报,2000,16(11):1035-1037.
[7] 王钦清,王潮霞.细乳液聚合制备二氧化钛/聚苯乙烯复合微球及其形貌分析[J].应用化工,2010,39(3):337-340.
[8] 李莉,高建平,向安.原位乳液聚合法制备二氧化钛/聚苯乙烯复合微球[J].化学工业与工程,2004,21(5):340-343.
[9] 徐立新,李为立,杨慕杰.纳米TiO2表面接枝聚苯乙烯及其抗紫外老化研究[J].化学学报,2007,65(7):1917-1921.
[10] 范红青,谢小林,全红英.纳米氧化钛改性聚苯乙烯耐紫外光老化性能的研究[J].江西化工,2010,3(7):1-3.
[11] 任长靖,王青,周雪,等.聚苯乙烯/纳米TiO2硅藻土复合材料的制备及其性能研究[J].化工新型材料,2017,45(11):232-240.
