纺织学报 ›› 2018, Vol. 39 ›› Issue (01): 66-70.doi: 10.13475/j.fzxb.20170301405

• 纺织工程 • 上一篇    下一篇

高强度抗老化土工布的制备与性能表征

  

  • 收稿日期:2017-03-08 修回日期:2017-06-09 出版日期:2018-01-15 发布日期:2018-01-16

Preparation and properties of high strength and anti-aging geotextile

  • Received:2017-03-08 Revised:2017-06-09 Online:2018-01-15 Published:2018-01-16

摘要:

为提高土工合成材料在实际工程应用中的耐久性和安全性,制备了一种抗老化聚丙烯/高模高强聚乙烯醇短纤维混合土工布,讨论了聚乙烯醇纤维含量对土工布力学和反滤性能的影响,采用扫描电子显微镜观察其内部微观结构,通过相关测试表征了其耐候性以及耐金属离子性能。结果表明:聚乙烯醇纤维均匀分散在土工布内部,使得纤维间缠结更加紧密;高模高强聚乙烯醇纤维含量为60% 时,土工布的力学和反滤性能均得到显著提高,干、湿态断裂强度分别为29.7、34.8 kN/m;等效孔径为0.109 3 mm;同时,耐候性及耐金属离子性能均得到提高,经过90 d光氧老化和18 d热氧老化(硝酸铜溶液浸泡后)实验后,强度保持率分别为73.7%和64.3%。

关键词: 复合土工布, 耐候性, 耐金属离子性能, 抗老化聚丙烯纤维, 高模高强聚乙烯醇纤维

Abstract:

In order to improve durability and safety of geotextile inreal engineer application, anti-aging polypropylene/high strength and high modulus polyvinl alcohol short fiber mixture geotextile was prepared. The influence of high strength and high modulus polyvinl alcohol (PVA) short-fiber content on properties of geotextile was discussed. The inner microcosmic construction was investigated using scanning electron microscopy. The properties of weatherability, filtration characteristics and metalic ions resistance were investigated by relevant tests. The results shown that PVA fibers disperse in geotextile uniformly and cause fibers entanglement together; the  properties of mechanical and filtration characteristics are enhanced when the content of PVA fibers is equal to 60%, dry and wet breaking strenght are 29.7 and 34.8 kN/m, respectively, and the value of the opening size is 0.109 3 mm. At the same time, weatherability and metallic ions resistance of geotextile are enganced, the strength retention is 73.7% and 64.3% for photo-oxidation (90d) and thermal oxidation (18d) after immersing in copper nitrate solution.

Key words: composite geotextile, weatherability, metallic ion resistance, ante-aging polypropylene fiber, high strength and high modulus polyvinyl alcohol fiber

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[1] 周玉麟. 上海市纺织系统科技情报工作会议[J]. 纺织学报, 1987, 8(10): 39 .
[2] 张百祥;周慈念;张长乐. 气流纺杯内纱条断裂的研究[J]. 纺织学报, 1982, 3(09): 5 -9 .
[3] 孙鸿文;陈庆官. 生丝抱合性能检测方法及其装置[J]. 纺织学报, 2005, 26(1): 80 -83 .
[4] 许符节. 1985年苧麻染整学术讨论会[J]. 纺织学报, 1986, 7(04): 44 .
[5] 周建;李龙;王善元;俞建勇. 热加工条件对喷气混纤型复合材料中空隙率的影响[J]. 纺织学报, 1998, 19(05): 45 -47 .
[6] 张春芳;吴建法. 丝毛花呢织物工艺探讨与实践[J]. 纺织学报, 1998, 19(06): 29 -30 .
[7] 赵罘;林建龙;辛洪兵;门桂香. 应用小波理论对电脑刺绣机振动信号降噪处理[J]. 纺织学报, 2004, 25(03): 55 -56 .
[8] 朱宝贵. 两种半自动络筒接头小机的分析[J]. 纺织学报, 1984, 5(08): 26 -29 .
[9] 李明忠;卢神州;吴徵宇;严灏景. 多孔丝素膜的制备及其形态结构[J]. 纺织学报, 2000, 21(05): 4 -7 .
[10] 郑光洪;李振华. 生物软麻剂在精干麻纺前处理中的应用研究[J]. 纺织学报, 1998, 19(06): 17 -18 .