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新型聚氨酯复合土工膜的制备方法研究

作者:李翠玲1,2,蒋冬阳1,2,蒋学行1,2

关键字:新型,聚氨酯,复合,土工,膜,的,制备,方法研究,

 
(1.河南省水利科学研究院,河南 郑州  450003;
2.河南省水利工程安全技术重点实验室,河南 郑州  450003)
    摘要:通过对涂层厚度、涂覆方法及力学性能测试等试验,制备了力学性能好、施工方便的聚氨酯复合土工膜,解决了复合土工膜防渗施工时不规则形状的铺设、缺陷修复以及复杂地形施工等难题。当聚氨酯防渗涂膜材料用量为1.0 kg/m2时,纵横向断裂强度≥5.0 kN/m,CBR顶破强力≥1.1 kN,撕破强力≥0.15 kN, 耐静水压力≥0.4 MPa,起到了很好的防渗作用。
    关键词:聚氨酯复合土工膜;拉伸断裂强度;CBR顶破强力;撕破强力;耐静水压
    中图分类号:TU592        文献标识码:A        文章编号: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