Epoxy resin coatings modified by ionic liquid. Study of abrasion resistance

eXPRESS Polymer Letters

M. D. Aviles¹ 

关键词: coatings;    films;    epoxy resin;    ionic liquid;    abrasion;   

DOI  :  10.3144/expresspolymlett.2019.26

学科分类：生物科学（综合）

来源: eXPRESS Polymer Letters

【 摘 要 】

In the present study, an epoxy resin coating containing a uniformly dispersed 9 wt% of the ionic liquid 1-octyl-3-methylimidazolium tetrafluoroborate (EP+9%[OMIM]BF4) has been applied by spin coating on a neat epoxy substrate,and its abrasion resistance under multiple scratch has been compared with that of neat epoxy coating. EP+9%[OMIM]BF4presents the lowest surface damage after 15 successive scratches. The ionic liquid-modified coating reduces instantaneouspenetration depth in a 13% and residual depth in a 22% with respect to EP, and increases viscoelastic recovery (after 30 seconds)in a 7.6%. The lubricating effect of the ionic liquid reduces the coefficient of friction up to the tenth scratch number.EP and EP+9%[OMIM]BF4 have also been obtained in the form of spin-coated films with similar visual transparency. Dynamic-mechanical characterization of the films under a tensile configuration confirms that the addition of the ionic liquidincreases the ductility and reduces the glass transition temperature of the epoxy resin.

【 授权许可】

CC BY