【摘要】 <正> 矿用橡套电缆,特别是采煤机电缆,常因机械作用而使橡套破损。若停产更换或升井热补,不仅影响生产,而且费时费力;另外,热补所用的生胶料易自硫化,不能长时间保存,且硫化时能量消耗较大。因此,电缆护套修补工艺的改革已成为急待解决的课题。为了克服井上热补的弊病,我所与煤炭更多还原

【Abstract】 A two-component curable polyurethane composition which especially suitable for the repair of damaged elastomeric cable sheath in mining applications has been developed. Initially the composition is a liquid having sufficiantly low viscosity and suitable to be poured in a adaptable mold around the section of damaged cable, or it can be coated on the damaged cable sheath after pre-thickening. The composition is capable of curing in a relatively short time without heating. After curing, the Composision exhibites outstanding adhesion strength ( >10 kg/2.5 cm ) , and excellent electrical and physical properties comparable to the sheath material itself.更多还原