کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8047394 1519092 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of Ureido-palygorskite and its effect on the properties of urea-formaldehyde resin
ترجمه فارسی عنوان
آماده سازی اورئیدو لیگورسکتی و تأثیر آن بر خواص رزین اوره فرمالدئید
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
چکیده انگلیسی
An Ureido-palygorskite (Ureido-PA) was developed by grafting γ-ureidopropyltriethoxysilane (UPTES) to PA to improve the performance of urea-formaldehyde resins (UF). The Ureido-PA was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and thermogravimetric-differential thermal (TG-DTA). UPTES was grafted onto the surface of palygorskite (PA) by chemical bonding. The effect of PA on the free formaldehyde content, the shear strength, and the water-resistance of UF resins was investigated. The free formaldehyde content of the composites was less than 1% and the shear strength was double of that of the pure UF resins when the dosage of Ureido-PA was 9% of net formaldehyde and urea (in total mass). The influences of PA on the thermal stability and the morphologies of the composites were also studied by derivative thermogravimetric (DTG) and transmission electron microscopy (TEM).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volumes 80–81, August 2013, Pages 133-139
نویسندگان
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