摘要:
The present invention provides a plastic optical fiber comprising a core and a sheath consisting of at least one layer, the plastic optical fiber having a transmission loss of 120 dB/km or less as measured by a 25m-1m cutback method under conditions of a wavelength of 525nm and an excitation of NA=0.45, and satisfying either one of the following conditions when a thickness of the innermost sheath layer is 0.5µm to 4.5µm, an amount of foreign matter having a size of 2 µm or greater contained in the innermost sheath layer is 2000/cm 3 or less, or a size X (µm) of foreign matter contained in the innermost sheath layer and an amount Y of the foreign matter (number/cm 3 ) satisfy formula (1) below: Y ≤ 1200 X e (-0.067xX) (1). Such optical fibers have a low transmission loss of green light (in particular, light having a wavelength of 525nm), enabling longer distance communication.
摘要翻译:本发明提供了一种塑料光纤,其包括芯和由至少一层构成的鞘,塑料光纤的传输损耗为120dB / km或更小,通过25m-1m的缩减方法在波长 为525nm,激发NA = 0.45,在最内侧的皮层的厚度为0.5〜4.5μm的情况下,满足下述任意一个条件时,最内侧的异物的大小为2μm以上 鞘层的厚度为2000 / cm 3以下,或者最内侧的鞘层中包含的异物的大小X(μm)和异物的量Y(个/ cm 3)满足下式(1):Y≤1200Xe (-0.067xX)(1)。 这种光纤具有绿光(尤其是波长为525nm的光)的低传输损耗,能够实现更长距离的通信。
摘要:
A fill material suitable for use as an insulative or cushioning material in footwear, outdoor apparel, and/or outdoor equipment, the fill material comprising: a plurality of discrete units comprising clusters or loose webs of fibers, the fibers comprising superfine fibers and/or fibers in a range of 1 to 5 denier; the fibers being entangled to form the clusters or loose webs.
摘要:
The present invention aims to provide a fabric for preventing adhesion of aquatic organisms which is excellent in an effect of preventing adhesion of aquatic organisms and in strength, which readily sinks in water, and which is suitable for use in various forms and environments. The fabric for preventing adhesion of aquatic organisms of the present invention includes yarn containing a fluororesin.
摘要:
A hydrophobic flame retardant fibre and method for preparing same are provided by the present invention. The fibre has a skin-core structure, wherein, the volume ratio of skin to core is in a range of 2:8-6:4; weight percentages of compositions of skin layer material include: 79.9%-88.8% of PET (polyethylene terephthalate), 8%-13% of PVDF (polyvinylidene fluoride), 3%-6% of flame retardant agent, 0.1%-0.5% of compatibilizer, 0.1%-0.6% of coupling agent; weight percentages of compositions of core layer material include: 91%-95% of PET, 5%-9% of flame retardant agent.
摘要:
A single layer, lightweight protective garment prepared from a fabric made of woven polytetrafluoroethylene staple fiber yam, the fabric having an outer surface composed fluoropolymer staple fibers.
摘要:
The present invention discloses a composite fishing line (1) manufactured by braiding eight bundles of fibers selected from two different types of fibers, one being a high molecular-weight polyethylene fiber (2) and the other being a high molecular-weight expanded polytetrafluoroethylene (ePTFE) fiber (3), such that the composite fishing line has the properties of both high molecular-weight polytetrafluoroethylene (PTFE) fibers and polyamide fibers to improve the strength, wear-resistance, cross-sectional roundness, and water resistance of the high-performance fishing line and achieve the effect of reducing the diameter of the fishing line.
摘要:
The PTFE real twist yarn of the present invention is a PTFE real twist yarn (41) obtained by twisting a polytetrafluoroethylene (PTFE) multi-filament slit yarn. The yarn has a circular cross-section with a circularity in the range of 10/8 to 10/10, where the circularity is expressed by the ratio between the major axis width and the minor axis width, the average fineness of filaments (42) is in the range of 1.5 to 200 dtex, a fineness D is in the range of 50 to 6000 dtex, and a twist coefficient K expressed by Formula (1) is in the range of 10000 to 35000: t w i s t c o e f f i c i e n t K = n u m b e r o f t w i s t s T × t h e f i n e n e s s D o f t h e P T F E r e a l t w i s t y a r n 1 / 2 where the number of twists T denotes the number of twists per meter and the fineness D is a total fineness.
摘要翻译:本发明的PTFE实捻纱是通过加捻聚四氟乙烯(PTFE)复丝狭缝纱得到的PTFE实捻纱(41)。 该纱线具有圆形横截面,圆形度在10/8〜10/10的范围内,其中圆度由长轴宽度与短轴宽度之比表示,细丝的平均细度(42) 在1.5至200分特的范围内,细度D在50至6000分特的范围内,并且由公式(1)表示的扭曲系数K在10000至35000的范围内:t ¢w ¢i ¢ ¢¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ t t t t t t t¢¢¢¢¢¢¢¢¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢¢ ¢ ¢ ¢ ¢ ¢ ¢¢ ¢ ¢ ¢ ¢ ¢ ¢ r ¢n 1/2其中扭曲数T表示每米的扭曲数,细度D是总细度。