Abstract in simplified Chinese:本发明关于一种制造高分子量聚乙烯纤维之方法,其包含使重量平均分子量为至少500000克/莫耳,Mw/Mn比例为最大6,及200/110单面定向参数为至少3之聚乙烯带在带之全宽按带厚度方向受力。本发明亦关于一种聚乙烯纤维,其Mw为至少500000克/莫耳,Mw/Mn比例为最大6,及020单面定向值为最大55°。亦请求这些纤维在各种应用中之用途。其特佳为制备低线性密度纤维。
Abstract:
The present invention concerns a hanger wire (drop wire) for contact wires of railway electrical lines, which comprises first wires made from copper or an alloy thereof combined with second wires consisting of a steel core coupled with a layer made from copper or an alloy thereof. Such a hanger wire is particularly suitable for high speed railway lines, since it has high mechanical performance, in particular in terms of tensile and compressive strength and fatigue strength, and at the same time it has high electrical conductivity, without increasing the weight.
Abstract:
A high-carbon steel wire has as steel composition: a carbon content ranging from 0.40 weight per cent to 0.85 weight per cent, a silicon content ranging from 1.0 weight per cent to 2.0 weight per cent, a manganese content ranging from 0.40 weight per cent to 1.0 weight per cent, and a chromium content ranging from 0.0 weight per cent to 1.0 weight per cent. The remainder is iron. This steel wire has as metallurgical structure a volume percentage of retained austenite ranging from 4 per cent to 20 per cent, while the remainder is tempered primary martensite and untempered secondary martensite. The steel wire is obtained by partitioning after quenching.
Abstract:
The present invention pertains to a process for manufacturing high molecular weight polyethylene fibers, comprising subjecting a polyethylene tape with a weight average molecular weight of at least 500 000 gram/mole, an Mw/Mn ratio of at most 6, and a 200/110 uniplanar orientation parameter of at least 3 to a force in the direction of the thickness of the tape over the whole width of the tape. The invention also pertains to a polyethylene fiber having an Mw of at least 500 000 gram/mole, an Mw/Mn ratio of at most 6, and a 020 uniplanar orientation value of at most 55°. The use of these fibres in various applications is also claimed. The preparation of low-linear density fibers is particularly preferred.
Abstract:
A cable adapted for use as an actuator, adaptive structural member, or damper, includes a plurality of longitudinally inter-engaged and cooperatively functioning shape memory alloy wires.
Abstract:
Tire (100) comprising at least one structural element including at least one metal cord comprising a plurality of elementary metal wires stranded together, each elementary metal wire being coated with at least one first metal coating layer, said metal cord being coated with at least one second metal coating layer, wherein said at least one second metal coating layer has a nominal thickness higher than or equal to 30 nm, preferably of from 50 nm to 120 nm, more preferably of from 70 nm to 100 nm.