纳米CeO2改性环氧树脂抗紫外老化.pdf

第25卷第12期
中国有色金属学报
2015年12月
umber
The Chinese Journal of Nonferrous Metals
December 20 15
文章编号:1004-0609(2015)12-3530-05
纳米CeO2改性环氧树脂抗紫外老化
王栋2,解立峰,王翠华3,王海洋
(1.南京理工大学化工学院,南京210094:
2.上海大众汽车有限公司宁波分公司,宁波315356
3.山东诚泰安全技术咨询有限公司,济南250013
摘要:采用自制的特种炸药利用爆轰法合成粒径为50nm的纳米CeO2将纳米CeO2以一定比例与环氧树脂(EP)
混合,采用浇铸的方法制备纳米CeO2改性的EP薄膜。利用设计的紫外老化试验箱对制备的薄膜进行了21d加
速老化试验,对比测试纯EP和改性EP老化前后薄膜的质量和力学性能变化规律。结果表明:纳米CeO2对紫外
线表现出较强的屏蔽作用。当纳米CeO2在EP中的质量分数为0.8%时,改性EP薄膜对波长为254nm的紫外吸
光度最大,EP薄膜的力学性能有所提高。相比纯EP薄膜,添加纳米CeO2后在紫外线条件下的使用寿命增加62%,
对抗拉强度的保持率提高35%。
关鍵词:纳米氧化铈;紫外屏蔽;环氧树脂;改性;老化
中图分类号:TQ1333
文献标志码:A
Anti ultraviolet aging of epoxy resin modified by nano Ceo:
WANG Dong 2, XIE Li-feng, WANG Cui-hua, WANG Hai-yang
(1. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
2. Ningbo Branch, Shanghai Volkswagen Co Ltd, Ningbo 315336, China
3. Shandong Chengtai Security Technology Consulting Co. Ltd, Jinan 250013, China
Abstract: Ceo 2 nanoparticles with size of 50 nm were produced by detonation method using self-made special explosive
In order to study shielding effect to the ultraviolet, nano Ceo2 and epoxy resin(P)were mixed in a certain proportion to
prepare a modified epoxy resin thin film by casting method. The prepared films were accelerated aging for 21 d in
ultraviolet inside a home-made test chamber to compare with no aging case, attempting to obtain the improvement of
performance and mechanical properties of modified epoxy resin film. The results show that the modified nano
cer a-epoxy resin film has strong shielding effect to ultraviolet. The absorbance of modified epoxy resin film to 254 nm
UV wavelength is maximum when the mass fraction of nano Cco2 is 0.8%. Meanwhile, the mechanical property of the
films has been improved. Compared with the pure epoxy resin, the service life of modified epoxy resin extends by 60%
and the tensile strength retention rate increases by 35%
Key words: nano Ceo2 Uv-shielding; epoxy resin; modification; aging
紫外辐射不仅对人类自身有伤害,还使一些高分用价值,所带来的危害越来越受到人们的重视。国内
子材料在使用过程中发生老化,导致其失去本来的利
外研究表明'?,在高分子材料中添加紫外吸收剂可有
基金项目:江苏省自然科学基金资助项目(BK20130760)
收稿日期:2014-10-13;修订日期:2015-09-18
通信作者:解立峰,教授,博士;电话:025-84315526:E-mail:xielifeng319@sina.com