私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當前位置:群英聚首 > 論文著作 > 正文
Effect of Solid-state Stress Induced Reaction on Morphology and Structure of Metallocene Polyethylene
來源:鄒華維教授個人網站 發布日期:2014-03-04
作者:Huawei Zou*, Yang Chen, Mei Liang, Pengbo Liu
關鍵字:polyolefins,properties and characterization,morphology
論文來源:期刊
具體來源:Journal of Applied Polymer Science, 2013, 130(3):1691-1699
發表時間:2013年

  Metallocene-catalyzed polyethylene (mPE) powder was prepared through a mechanochemical reactor in solid state at ambient temperature. The changes of morphology and structure of mPE were investigated by SEM, FTIR, DSC, viscosimetry, GPC, WAXD, dynamic rheometer, and high pressure capillary rheometer methods. FTIR measurement illustrated that the branching degree of mPE increased after mechanochemical reaction. Combined with the dynamic rheological analysis, it was proved that the rupture and combination of macromolecular chain undergo strong shear resulted in the formation of long chain branches. X-ray diffraction analysis showed that the crystal form of mPE transferred from rhombic to monoclinic system partly, and the crystalline degree increased slightly in the initial mechanochemical reaction period. Viscometer test results exhibited that molecular weight of mPE dropped during the mechanochemical treatment. Rheology measurement indicated that the critical shear rate of the shark-skin failure enhanced and the extruded stands exhibited smooth face for the mPE after mechanochemical treatment.

Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網 版權所有
經營性網站備案信息

京公網安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號

主站蜘蛛池模板: 任丘市| 泰来县| 屯门区| 上杭县| 静宁县| 延吉市| 郁南县| 柘荣县| 碌曲县| 西宁市| 濮阳县| 阳曲县| 道真| 翼城县| 安徽省| 广东省| 修文县| 阿瓦提县| 和龙市| 交口县| 清原| 施甸县| 普定县| 德安县| 长海县| 延边| 栾川县| 武川县| 双流县| 上蔡县| 遂川县| 宝应县| 洱源县| 郎溪县| 天峻县| 樟树市| 洛隆县| 彩票| 乐清市| 平舆县| 东安县|