寒区渠道接缝材料耐老化性能及技术指标研究  

Analysis of the Aging Resistance and Technical Indexes of Channel Joint Materials in Cold Area

作　　者：胡佳雯 何武全[1] 裴文武 吉仁古日巴 张慧莉[1] HU Jiawen;HE Wuquan;PEI Wenwu;JiRen Guriba;ZHANG Huili(College of Water Resources and Architectural Engineering,Northwest A&F University,Xianyang,Shaanxi 712100,China;Inner Mongolia Hetao Irrigation District Water Resources Development Center,Bayannur,Inner Mongolia 015000,China;Inner Mongolia Xinyu Water Conservancy and Hydroelectric Engineering Construction Co.,Bayannur,Inner Mongolia 015000,China)

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]内蒙古河套灌区水利发展中心,内蒙古巴彦淖尔015000 [3]内蒙古新禹水利水电工程建设有限公司,内蒙古巴彦淖尔015000

出　　处：《水利与建筑工程学报》2025年第1期185-191,共7页Journal of Water Resources and Architectural Engineering

基　　金：水利部重大科技项目(SKS-2022110)。

摘　　要：为提高渠道接缝材料寿命,将原渠道接缝材料配方进行优化并对其耐久性进行试验研究。以光反射材料超细白云母、纳米二氧化钛、紫外线吸收剂所占百分比为变量,采用三因素三水平正交试验确定最佳配比。试验表明:4%光反射材料超细白云母、5%纳米金红石型二氧化钛和0.3%紫外线吸收剂UV-327的配方呈现出最优的综合性能。结合紫外线老化寿命分析,可将我国严寒地区接缝材料的耐老化技术指标确定为:经酸、碱侵蚀后,拉伸强度保持率≥90%,断裂伸长率保持率≥90%,弹性恢复率保持率≥90%;经紫外线老化试验1500 h后,拉伸强度保持率≥95%,断裂伸长率保持率≥95%,弹性恢复率保持率≥95%。三种原料虽对新型接缝材料耐酸、耐碱性能无显著影响,但显著提升了其耐紫外线老化性能。In order to improve the life of the channel jointing material,the original channel jointing material formula was optimized and its durability was experimentally evaluated.With the percentage of light-reflecting material ultrafine white mica,nano titanium dioxide and ultraviolet absorber as variables,the three-factor three-level orthogonal test was used to determine the optimal ratio.The test showed that the formula of 4% light-reflecting material ultrafine white mica,5% nanometer rutile titanium dioxide and 0.3% ultraviolet absorber UV-327 showed the best comprehensive performance.Combined with the analysis of UV aging life,the aging-resistant technical indexes of joint materials in China's cold regions can be determined as follows:after acid and alkali erosion,the tensile strength retention rate≥90%,the elongation at break retention rate≥90%,the elasticity recovery rate retention rate≥90%;after UV aging test for 1500 hours,the tensile strength retention rate≥95%,the elongation at break retention rate≥95%,the elasticity recovery rate retention rate≥95%.rate≥95%.The three raw materials do not have a significant effect on the new jointing material's resistance to acid and alkali,but it significantly improves its resistance to ultraviolet aging performance.

关 键 词：新型接缝材料 耐酸性能 耐碱性能 耐紫外线老化性能 耐候性技术指标 

分 类 号：TV441.5[水利工程—水工结构工程]