MA Jiachena, b , ZHANG Luqinga, b , ZHANG Xuexuc , LIU Zhongweia, b , ZHANG Shuxianga, b, d
（a. School of Chemistry and Chemical Engineering; b. Shandong Key Laboratory of Fluorine Chemistry and Chemical Engineering Materials; c. School of Materials Science and Engineering；d. Shandong Engineering Research Centre for Fluorinated Materials, University of Jinan, Jinan 250022, China）
Abstract： In order to investigate the stability of polyvinyl alcohol fibers in cement hydration process for modification of cement-based materials, the alkaline condition of cement hydration was simulated, and the stability of chemical structure under strong alkaline conditions, the changes of apparent shape and mechanical property for three kinds of polyvinyl alcohol (PVA) fibers were studied， which were characterized by infrared spetra，micro cosmic morphology of fiber surface and breaking streng of filament. The results show that the alkali resistance of PVA fibers is good when the fibers are soaked in strong alkaline conditions (pH=12.8), their mechanical strength is hardly changed when they are soaked for 10 d, and their mechanical strength reduces not more than 10% when they are soaked for 28 d. The structure and appearance of fibers have no significant changes.
Keywords: polyvinyl alcohol fiber; cement-based materials; modification; alkali resistance; mechanical property
中图分类号：TQ342+.41 文献标志码：A
文章编号：1008-5548(2015)02-0061-03
DOI:10.13732/j.issn.1008-5548.2015.02.015
收稿日期：2015-02-02， 修回日期：2015-02-24，在线出版时间：2015-04-17。
基金项目：国家国际科技合作专项项目，编号：2012DFA70870-3。
第一作者简介：马佳晨（1994—），男，硕士研究生，研究方向为聚合物功能材料 。 E-mail：1246214536@qq.com。
通信作者简介：张书香（1954—），男，教授，研究方向为功能高分子和氟化学化工材料。 E-mail： chm_zhangsx@ujn.edu.cn。
