摘要
为研究有机层合玻璃界面黏接性能,测试了中间层胶片聚氨酯(TPU)、聚乙烯缩醇丁醛(PVB)与有机玻璃(PMMA)、聚碳酸酯(PC)之间在不同载荷方式(90°剥离、拉伸、剪切)及不同环境温度(-30~70℃)下的黏接强度,并通过测定材料的表面自由能阐述了黏接机理。结果表明:TPU与PC之间黏接强度较高,TPU、PVB胶片与PMMA之间黏接强度均较低,PVB与PC之间由于塑化剂迁移至黏接界面几乎无黏接强度;测试环境温度由低到高,黏接强度逐渐降低,但在低温下可能由于热膨胀系数差异以及胶层硬化易导致黏接失效;90°剥离以及拉伸这两种载荷方式对黏接界面的缺陷敏感性较高,而剪切作用主要考察胶层本身的强度,对黏接界面缺陷不敏感。
To research the interface bonding property of transparent polymeric laminates,the bonding strength between interlayer film and transparent plastic was evaluated under different loading modes(90°peel,tensile and shear bonding)and at different temperatures(-30~70℃),and the functional mechanism was revealed by examining the surface free energy of the materials.It turns out that,the bonding strength between TPU and PC is high,while the strengths between TPU or PVB and PMMA are low.PVB and PC cannot be bonded because of the weak boundary layer existing between them.As temperature rises,the adhesion strength decreases because the adhesion force becomes weaker.At low temperature,the bonding may fail because the heat expansion coefficients of interlayer and transparent plastic are different and the interlayer film is hard.As to loading modes,90°peeling and tensile are sensitive to interface defects,while shearing is to evaluate the strength of interlayer itself.
作者
郑梦瑶
张晓雯
相宁
丁尧
颜悦
ZHENG Mengyao;ZHANG Xiaowen;XIANG Ning;DING Yao;YAN Yue(Beijing Engineering Research Center of Advanced Structure Transparence for the Modern Traffic System,Beijing Institute of Aeronautical Materials,Beijing 100095,China)
出处
《实验室研究与探索》
CAS
北大核心
2021年第11期75-80,105,共7页
Research and Exploration In Laboratory
关键词
黏接性能
聚氨酯胶片
聚乙烯醇缩丁醛胶片
有机玻璃
聚碳酸酯
有机层合玻璃
adhesion properties
thermoplastic polyurethane(TPU)film
polyvinyl-butyral(PVB)film
polymethylmethacrylate
polycarbonate(PC)
organic transparent laminates
