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مقاله An Attempt to Study the Cleanability of a Polyurethane Coating in the Presence of a Silicone Modified Polyacrylate Additive در pdf دارای 11 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است

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توجه : در صورت  مشاهده  بهم ریختگی احتمالی در متون زیر ،دلیل ان کپی کردن این مطالب از داخل فایل ورد می باشد و در فایل اصلی مقاله An Attempt to Study the Cleanability of a Polyurethane Coating in the Presence of a Silicone Modified Polyacrylate Additive در pdf ،به هیچ وجه بهم ریختگی وجود ندارد

بخشی از متن مقاله An Attempt to Study the Cleanability of a Polyurethane Coating in the Presence of a Silicone Modified Polyacrylate Additive در pdf :

سال انتشار: 1388

محل انتشار: سومین کنگره بین المللی رنگ و پوشش

تعداد صفحات: 11

چکیده:

In this study, surface properties of a polyurethane clear coating were modified using a silicone containing polyacrylate additive. Surface free energy and mechanical properties of prepared coating samples were evaluated by contact angle measurement and dynamic mechanical thermal analysis (DMTA). The results showed that surface free energy of the samples decreased with replacement of the polyol with additive up to 10 mole percent and after that a constant trend was observed. The plausible explanation for the reduction in surface energy was attributed to the decrease in the polar component of the surface energy, the effect of which was shown on improvement of the cleanability of the surface. DMTA analysis revealed a homogenous matrix with no significant changes in glass transition temperatures. Furthermore, it was observed that the elastic modulus tended to increase as the concentration of the surface modifying additive increased.

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