کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5207060 1382334 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Material PropertiesThe effect of silane carriers on silane grafting of high-density polyethylene and properties of crosslinked products
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Material PropertiesThe effect of silane carriers on silane grafting of high-density polyethylene and properties of crosslinked products
چکیده انگلیسی

High-density polyethylene (HDPE) was melt-grafted with vinyl trimethoxysilane using dicumyl peroxide as initiator. Three types of ethylene copolymers were used as silane carriers, and were evaluated for their ability to assist the silane-grafting and water-crosslinking of HDPE. FTIR revealed that an increase in the amount of silane absorbed in the carriers did not help improve the silane-grafting efficiency. However, the gel and rheological results showed that those carriers promoted the rate of crosslinking and increased the density of the crosslink network. Ethylene vinyl acetate showed a stronger effect in this respect than ethylene octene and ethylene-butene copolymers. Analysis of the crosslinked materials by heat distortion temperature (HDT) test and thermogravimetric analysis (TGA) indicated a marked increase in distortion and decomposition temperatures, as well as thermal activation energy, compared to the neat HDPE. The presence of silane crosslink also resulted in a slight improvement in tensile yield stress and modulus.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 29, Issue 8, December 2010, Pages 958-965
نویسندگان
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