HDPE土工膜耐环境应力开裂指标对于抗老化很重要

HDPE土工膜耐环境应力开裂指标对于抗老化很重要    
HDPE土工膜耐环境应力开裂指标是利用弹性理论和粘弹性模型提出了温度应力和温度应力松弛的测试方法.实验过程采用拉压传感器、热电偶以及位移计研究了环境温度变化对HDPE土工膜耐环境应力开裂指标的影响,以及HDPE土工膜温度应力伴随时间变化的规律性.通过实验表明:HDPE土工膜的温度应力伴随环境温度的变化而变化,当环境温度下降时将导致HDPE土工膜收缩产生温度应力;HDPE土工膜耐环境应力开裂指标在实验室1500小时后，各项指标能够达到母材的80%，说明了HDPE土工膜产品具有很强的抗老化性能。而HDPE土工膜抗老化指标与HDPE土工膜生产过程中所添加的炭黑、抗老化剂、抗紫外线剂密不可分的，泰安瑞恒土工膜是以高密度聚乙烯树脂添加一定比例的碳黑色母、抗老化剂、抗氧化剂、紫外线吸收剂、稳定剂等吹塑而成，用于防渗防潮的新型防水建材，产品质量采用美国ASTM测试标准，完全达到美国GRI-GM13标准及标准要求。

HDPE geotechnical membrane resistance to environmental stress cracking index is the temperature stress and stress relaxation test method is proposed by using the force of elastic and viscoelastic model. The tension-compression sensor, thermocouple and a displacement meter of ambient temperature changes on the HDPE geotechnical membrane resistance to environmental stress cracking index and the experimental process, as well as HDPE geomembrane temperature stress regularity with time change. Experiments show that: HDPE geomembrane temperature stress variation with temperature changes, when ambient temperature falls will cause HDPE geotechnical membrane shrinkage temperature stress; HDPE geotechnical membrane resistance to environmental stress cracking index in the laboratory for 1500 hours later, the indicators can reach 80% of the parent material, explains HDPE geotechnical membrane has very strong anti - aging properties. While the HDPE geomembrane aging resistance of carbon black, add index and HDPE geotechnical membrane in the production process of anti-aging agent, anti UV agent inseparable, Tai'an Ruiheng geomembrane is to add a certain proportion of high density polyethylene resin carbon black masterbatch, anti-aging agent, antioxidant, ultraviolet absorbent, stabilizer, blow but, for moisture impermeable waterproof building materials, the quality of the products using the United States ASTM testing standards, fully meet the United States GRI-GM13 standards and national standards.
关键词：HDPE土工膜  耐环境应力 抗老化土工膜