کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6375827 | 1624835 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polyurethane rigid foams formed from different soy-based polyols by the ring opening of epoxidised soybean oil with methanol, phenol, and cyclohexanol
ترجمه فارسی عنوان
فومهای سخت سفت و سخت پلی اورتان تشکیل شده از پلی ویل های مختلف مبتنی بر سویا توسط حلقه باز کردن روغن سویا اپوکسی شده با متانول، فنل و سیوکل هگزانول
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Three polyols (Polyol-M, Polyol-P, and Polyol-C) were synthesised from epoxidised soybean oil by oxirane ring opening with methanol, phenol, and cyclohexanol, and their corresponding polyurethane rigid foams (PU-M, PU-P, and PU-C) were prepared by mixing the soy-based polyol with petroleum-based polyether polyols. At identical soy-based polyol content, PU-P had the greatest density, the smallest cell size, and the highest thermal conductivity. At 25Â wt% of soy-based polyol content, the introduction of phenol resulted in the improvement of the compression strength, the thermal stability, and the glass-transition temperature of the bio-foam. However, when the soy-based polyol content was increased to 50Â wt%, the poor performance of PU-P was due to the low crosslink density caused by high steric hindrance of excessive benzene rings. The introduction of cyclohexanol failed to improve the properties of the bio-foam. The aliphatic six-membered ring acted as a plasticiser and could not alleviate the drawbacks created by the dangling chains.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 74, 15 November 2015, Pages 76-82
Journal: Industrial Crops and Products - Volume 74, 15 November 2015, Pages 76-82
نویسندگان
Dong Ji, Zheng Fang, Wei He, Zhenyang Luo, Xiubo Jiang, Tingwei Wang, Kai Guo,