纳米TiO_2和纳米CaCO_3对EVAC流滴棚膜性能的影响  

Effects of Nano-TiO_2 and Nano-CaCO_3 on Properties of EVAC Droplet Greenhouse Films

作　　者：许磊[1] 付蕾[1] 贾仕奎[1] 张浩[1] 彭程 宋鹏飞 Xu Lei;Fu Lei;Jia Shikui;Zhang Hao;Peng Cheng;Song Pengfei(School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, China)

机构地区：[1]陕西理工大学材料科学与工程学院,陕西汉中723000

出　　处：《工程塑料应用》2017年第11期113-117,共5页Engineering Plastics Application

基　　金：陕西理工大学校级科研项目(SLGKY16-01);陕西省2017大学生创业训练项目(2307)

摘　　要：采用内添法,将纳米二氧化钛(nano-TiO_2)或纳米碳酸钙(nano-CaCO_3)与流滴剂司班60等助剂混合后,利用挤出机制备以乙烯–乙酸乙烯酯塑料(EVAC)为载体的流滴母粒,进而通过吹塑工艺制备EVAC流滴棚膜,探讨了nano-TiO_2或nano-CaCO_3用量对EVAC流滴棚膜拉伸性能、流滴性和透光性的影响。结果表明,适当的加入nanoTiO_2或nano-CaCO_3,均能提高棚膜的拉伸强度,当母粒中nano-CaCO_3用量为4份时,棚膜的纵横向拉伸强度达到最大,而母粒中nano-TiO_2用量为2份时,即可使棚膜的纵横向拉伸强度达到最大;nano-TiO_2的加入略微改善了棚膜的流滴性,而nano-CaCO_3使棚膜的流滴性降低;添加nano-TiO_2或nano-CaCO_3后,棚膜对紫外光均有明显的屏蔽效果,对可见光的透光率也均有所提升,其中添加nano-TiO_2的棚膜的紫外光屏蔽效果以及对可见光的透光率均明显高于添加nano-CaCO_3的棚膜。Nano-TiO2or nano-CaCO3,anti-dropping agent Span60and other additives were mixed,the anti-dropping masterbatch with ethylene-vinyl acetate plastic(EVAC)as the carrier was prepared by extruder and then the EVAC droplet greenhouse film was prepared by blow molding.The effects of nano-TiO2or nano-CaCO3contents on the tensile properties,anti-dropping property and light transmittance on the films were studied.The results show that the appropriate addition of nano-TiO2or nano-CaCO3can improve the tensile strength of the film.When the content of nano-CaCO3in the masterbatch is4phr,the vertical and horizontal tensile strengths of the film are the largest,but when the content of nano-TiO2in the masterbatch is2phr,the vertical and horizontal tensile strengths are highest.The addition of nano-TiO2improves the anti-dropping property of the film slightly,while the nano-CaCO3reduces the anti-dropping property.With the addition of nano-TiO2or nano-CaCO3,the film has a significant shielding effect on the ultraviolet light,the visible light transmittance also is improved,the film added by nano-TiO2has better ultraviolet shielding effect and the visible light transmittance than those added by nano-CaCO3.

关 键 词：乙烯–乙酸乙烯酯塑料 纳米二氧化钛 纳米碳酸钙 棚膜 拉伸性能 流滴 透光率 

分 类 号：TQ325.5[化学工程—合成树脂塑料工业]