Improvement of environmental stress cracking resistance of polycarbonate by silicone coating
Improvement of environmental stress cracking resistance of polycarbonate by silicone coating
复制标题
有机硅涂层提高聚碳酸酯的耐环境应力开裂性能
DOI：
10.1016/j.polymertesting.2016.11.007
复制
发表时间：
2017-07
期刊：
影响因子：
5.1
通讯作者：
Shen Changyu
中科院分区：
文献类型：
--
作者：
Yan Chenguang;Zhang Junli;Han Jian;Wang Xinchao;Guan Zhanshi;Zhang Lixiang;Liu Chuntai;Shen Changyu
为探索采用表面涂层降低透明聚碳酸酯（PC）零件环境应力开裂（ESC）的可能性，在自制的三点弯曲试验机上，对有机硅涂层和SiO2涂层PC在乙醇存在下进行了试验。记录应力随时间的变化，并观察表面裂纹以评估样品的ESC抗性。应力松弛速率减慢和表面裂纹减少表明，有机硅涂层提高了PC的ESC电阻，但SiO2涂层的PC被发现没有比未涂层PC更好。有机硅涂层减少了PC对乙醇的吸收，削弱了表面塑化作用，从而阻碍了PC裂纹的形成和发展。纳米压痕测试结果表明，与SiO2涂层相比，有机硅涂层的硬度和弹性模量等力学性能更好地匹配PC。这使得有机硅涂层在乙醇和应力的联合作用下对PC提供持续保护具有良好的效果。
To explore the possibility of using surface coating to reduce environmental stress cracking (ESC) of transparent polycarbonate (PC) parts, silicone coated and SiO2coated PC were tested in a self-made three-point bending apparatus in the presence of ethanol. The variation of stress with time was recorded, and the surface cracking was observed to evaluate the ESC resistance of samples. Slower stress relaxation rates and fewer surface cracks indicated that silicone coating improved the ESC resistance of PC, but SiO2coated PC was found to be no better than that of uncoated PC. Silicone coating reduced the absorption of ethanol in PC, weakening the surface plasticization, thus hindering the formation and development of cracks in PC. Nanoindentation test results showed that the mechanical properties such as hardness and elastic modulus of silicone coating are a better match for PC than SiO2coating. This allows the silicone coating to have a favorable effect in providing continuous protection for PC under the combined action of ethanol and stress.
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影响因子：
2.7
作者：
Doerner, M. F.;Nix, W. D.
通讯作者：
Nix, W. D.
影响因子：
3.6
作者：
A. Bhattacharya;W. Nix
通讯作者：
A. Bhattacharya;W. Nix
DOI：
10.1002/pssa.201431685
发表时间：
2015-04
期刊：
physica status solidi (a)
影响因子：
--
作者：
Xuan Zhang;Xiaofeng Zhang;Yue Yan;Yanli Zhong;Lei Li;Guanli Zhang
通讯作者：
Xuan Zhang;Xiaofeng Zhang;Yue Yan;Yanli Zhong;Lei Li;Guanli Zhang
影响因子：
3
作者：
Xuan Zhang;Yanli Zhong;Lei Li;Yue Yan
通讯作者：
Xuan Zhang;Yanli Zhong;Lei Li;Yue Yan
影响因子：
0.5
作者：
J. Jansen
通讯作者：
J. Jansen