Through the strong pulling tests of four kinds of synthetic fiber filter cloth , the mechanical performance index of the filter cloth in dry and wet conditions were measured , the influence of various pulling speeds on the fracture strength and the fracture tensile rate of the filter cloth was derived . it was concluded that the stress of the filter cloth could relax when it was beyond the yield point 通過4種合成纖維濾布的強力拉伸試驗,測得了濾布在干、濕兩種狀態(tài)下的力學性能指標,得出了不同拉伸速度對濾布斷裂強度和斷裂伸長率的影響,同時指出當濾布的應(yīng)力超過屈服點時,會出現(xiàn)應(yīng)力松馳現(xiàn)象。