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علوم و تکنولوژی پلیمر، جلد ۲۳، شماره ۴، صفحات ۲۸۳-۲۹۱
عنوان فارسی بررسی اثر لکه پذیری پوشش پلی یورتان نوشتارناپذیر در برابر شرایط جوی تسریع شده
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Staining Behavior of an Anti-Graffiti Polyurethane Clear Coating against Accelerated Weathering Test
چکیده انگلیسی مقاله Apermanent anti-graffiti clear polyurethane coating, using a silicone additive, was prepared and studied. Various techniques, such as contact angle measurements and EDX were employed to characterize and investigate thesurface properties of the coatings. The results revealed that with inclusion of silicon additive to clear coating, according to Wu method, surface free energy was decreased from 45.13 mJ/m2 for neat clear polyurethane film to 25.25 mJ/m2 in a coating containing 5% additive. With inclusion of higher mole percentage of additive, surface energies remained constant as revealed by EDX technique, which was considered to be due to the excessively covered surface by silicone additive. Ageing under UV radiation revealed that the inclusion of additive up to 5 mole percentage could improve the anti-graffiti property during the first few aging cycles. However, by increasing the number of aging cycles and higher concentration of silicone additive, the rate of degradation in coatings increased. The results showed that PU5% has the best anti-graffiti and ageing properties among other compositions.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله علی محمد ربیع | ali mohammad


محسن محسنی |


سید مجتبی میرعابدینی | seyed mojtaba


نشانی اینترنتی http://jips.ippi.ac.ir/article_668_280.html
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/968/article-968-197313.pdf
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