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      新型聚氨酯復合土工膜的制備方法研究

      作者:李翠玲1,2,蔣冬陽1,2,蔣學行1,2

      關鍵字:新型,聚氨酯,復合,土工,膜,的,制備,方法研究,

       
      (1.河南省水利科學研究院,河南 鄭州  450003;
      2.河南省水利工程安全技術重點實驗室,河南 鄭州  450003)
          摘要:通過對涂層厚度、涂覆方法及力學性能測試等試驗,制備了力學性能好、施工方便的聚氨酯復合土工膜,解決了復合土工膜防滲施工時不規則形狀的鋪設、缺陷修復以及復雜地形施工等難題。當聚氨酯防滲涂膜材料用量為1.0 kg/m2時,縱橫向斷裂強度≥5.0 kN/m,CBR頂破強力≥1.1 kN,撕破強力≥0.15 kN, 耐靜水壓力≥0.4 MPa,起到了很好的防滲作用。
          關鍵詞:聚氨酯復合土工膜;拉伸斷裂強度;CBR頂破強力;撕破強力;耐靜水壓
          中圖分類號:TU592        文獻標識碼:A        文章編號:1001-702X(2020)08-0167-03
       
      Study on preparation method of polyurethane composite geomembrane 
      LI Cuiling1,2,JIANG Dongyang1,2,JIANG Xuexing1,2
      (1.Henan Water Conservancy Science Academy,Zhengzhou 450003,China;
      2.Henan Key Laboratory of Hydraulic Engineering Security Technology,Zhengzhou 450003,China)
          Abstract:By testing the layer thickness,coating method and mechanical properties,we have finally achieved the Polyurethane Composite Geomembrane with good mechanical properties and convenient construction,so the problems of irregular shape laying,defect repairing and complex terrain construction of composite geomembrane are solved. When the polyurethane impermeable coating material dosage is 1.0 kg/m2,the vertical and horizontal fracture strength is ≥5.0 kN/m,the CBR bursting strength is ≥1.1 kN,the tearing strength is ≥0.15 kN,and the hydrostatic pressure resistance is ≥0.4 MPa,achieving good anti-seepage effect.
          Key words:polyurethane composite geomembrane,the tensile fracture strength,the CBR bursting strength,the tear strength, the hydrostatic pressure
      贵州快三