管道修复用涤纶-苎麻复合机织物性能试验
Performance test of ramie-polyester composite woven fabric applied on pipeline rehabilitation

针对传统管道内衬修复材料施工中易出现内壁塌陷等问题，结合目前快速发展的绿色纤维复合材料，提出在涤纶机织物内衬材料中加入苎麻纱线，制作涤纶-苎麻复合机织物材料来提高树脂对管道修复用内衬机织物的浸透性能，增强内衬材料和管壁的粘结性能。以纤维外观、抽拔实验后纤维断面形貌的电镜观察，并通过树脂与织物接触角的测试、粘结实验，综合分析了涤-麻复合机织物的树脂浸透性，同时对涤纶-苎麻复合机织物力学性能进行测试来保障内衬复合材料满足强度的要求。实验结果表明，采用上述涤-麻复合织造的方法，可以显著提高树脂的浸透性能，有利于携带更多的树脂粘结剂提高树脂与管壁的粘结性，减少塌陷发生的可能性。同时加入麻复合的机织物，拉伸顶破性能都满足高压燃气管道的修复要求。 Aiming at inner wall prone collapse problems in the conventional pipe lining repair material construction, combined with the rapid development of current green fiber composite material, adding ramie yarn in polyester woven fabric lining material was advised, and polyester-ramie composite woven fabric was producted to improve pipeline rehabilitation lined woven fabrics resin impregnated performance, the bonding performance of inner lining materials and pipe wall was enhanced. The appearance of fiber and fracture surface after pulling experiment was observed by electron microscope. With the resin and fabric contact angle testing, bonding experiment, a comprehensive analysis of the resin penetration of polyester-ramie composite woven fabrics was made. Meanwhile, mechanical properties of polyester/ramie composite woven fabric were texted in order to meet the inner lining composite materials strength requirements. Experimental results show that the use of polyester/ramie woven composite manner as described above, can significantly improve the resin penetration, and it's beneficial for carrying more resin to improve bonding performance of resin and pipe wall, and can reduce the likelihood of collapse. While, the tensile and bursting performance of woven fabric added ramie composite can meet the repair requirements of high-pressure gas pipeline. 国家自然科学基金（51303128；51403154；51303131）；天津市高等学校科技发展基金（20110315）；天津市自然科学基金（15JCZDJC38400）