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HDPE土工膜耐環(huán)境應(yīng)力開(kāi)裂指標(biāo)對(duì)于抗老化很重要

HDPE土工膜耐環(huán)境應(yīng)力開(kāi)裂指標(biāo)對(duì)于抗老化很重要    
HDPE土工膜耐環(huán)境應(yīng)力開(kāi)裂指標(biāo)是利用彈性理論和粘彈性模型提出了溫度應(yīng)力和溫度應(yīng)力松弛的測(cè)試方法.實(shí)驗(yàn)過(guò)程采用拉壓傳感器、熱電偶以及位移計(jì)研究了環(huán)境溫度變化對(duì)HDPE土工膜耐環(huán)境應(yīng)力開(kāi)裂指標(biāo)的影響,以及HDPE土工膜溫度應(yīng)力伴隨時(shí)間變化的規(guī)律性.通過(guò)實(shí)驗(yàn)表明:HDPE土工膜的溫度應(yīng)力伴隨環(huán)境溫度的變化而變化,當(dāng)環(huán)境溫度下降時(shí)將導(dǎo)致HDPE土工膜收縮產(chǎn)生溫度應(yīng)力;HDPE土工膜耐環(huán)境應(yīng)力開(kāi)裂指標(biāo)在實(shí)驗(yàn)室1500小時(shí)后，各項(xiàng)指標(biāo)能夠達(dá)到母材的80%，說(shuō)明了HDPE土工膜產(chǎn)品具有很強(qiáng)的抗老化性能。而HDPE土工膜抗老化指標(biāo)與HDPE土工膜生產(chǎn)過(guò)程中所添加的炭黑、抗老化劑、抗紫外線劑密不可分的，泰安瑞恒土工膜是以高密度聚乙烯樹(shù)脂添加一定比例的碳黑色母、抗老化劑、抗氧化劑、紫外線吸收劑、穩(wěn)定劑等吹塑而成，用于防滲防潮的新型防水建材，產(chǎn)品質(zhì)量采用美國(guó)ASTM測(cè)試標(biāo)準(zhǔn)，完全達(dá)到美國(guó)GRI-GM13標(biāo)準(zhǔn)及標(biāo)準(zhǔn)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.
關(guān)鍵詞：HDPE土工膜  耐環(huán)境應(yīng)力 抗老化土工膜