摘要
利用自制的微纳层叠共挤设备制备了交替多层聚碳酸酯(PC)/聚甲基丙烯酸甲酯(PMMA)光学薄膜并进行薄膜双向拉伸试验,对其光学性能进行了表征。微层共挤设备初步制备的交替多层PC/PMMA薄膜在可见光区域的平均可透过率高达75%以上,近红外区域的最大反射率达到19.5%,比单一材料的薄膜有了大幅度提高。总体而言,在薄膜厚度40～90μm范围内,不同厚度的交替多层薄膜的可见光区域的透过率在80%以上,近红外区域的反射率随薄膜厚度的变化略有差异。在薄膜厚度为50μm左右时,综合光学性能最好,在近红外区域的平均反射率在23%以上,最大反射率达到31.66%,平均可见光透过率在75%以上。光学薄膜可满足对太阳光的隔热及内部采光的需求,降低能耗,用于建筑、汽车等玻璃贴膜。
The alternating and multilayer polycarbonate(PC)/polymethyl methacrylate(PMMA)optical film was prepared by the self-made micro-nano multilayer co-extrusion device and the double tensile test.The optical properties of films were characterized.The average transmissivity of alternating multilayer PC/PMMA films prepared by micro-layer co-extrusion equipment is over 75%in the visible region,and the maximum reflectivity in the near-infrared region reaches 19.5%,which greatly higher than that of single material films.Generally speaking,the visible transmissivity of the alternating multilayer films with different thicknesses are above 80%,and the reflectivity for the near-infrared region varied with the thickness in the thickness range of 40–90μm.The film with thickness of 50μm has best integrated optical performance which the average reflectivity for near-infrared region is over 23%the maximum for 31.66%,and the total visible light transmittance is over 75%.The optical film can be used in the glass of building,car and so on for ruducing energy consumption by solar heat insulation and intelligent interior lighting.
作者
黄亮
杨卫民
焦志伟
石美浓
丁玉梅
Huang Liang;Yang Weimin;Jiao Zhiwei;Shi Meinong;Ding Yumei(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2018年第11期6-10,共5页
Engineering Plastics Application
基金
国家重点研发计划项目(2016YFB0302000)
北京市自然科学基金项目(2162033)
关键词
微层共挤
聚碳酸酯/聚甲基丙烯酸甲酯
光学薄膜
近红外区域
光学性能
micro-nano multilayer co-extrusion
polycarbonate/polymethyl methacrylate
optical film
near-infrared region
optical property
作者简介
通讯作者:焦志伟,博士,主要从事聚合物加工原理及设备研究E-mail:jiaozw@mail.buct.edu.cn
