摘要:
The present invention provides a waterproof structure for a conductive path which waterproofs a conductive path without imposing an unnecessary load on a conductor, and can sufficiently obtain a creepage distance.A plurality of grooves 9 is formed on the outer circumferential surface 8 of an insulator 7. The grooves 9 are formed to be hollow by heat or cutting. The grooves 9 are formed within a predetermined range L on the outer circumferential surface 8 of the insulator 7. This predetermined range L is set as a range in which an overmold part 5 is provided. The overmold part 5 is a seal member made of an elastomer, and is disposed and formed within the predetermined range L of an electric wire 2. Also, the overmold part 5 is formed to fill all of the three grooves 9.
摘要:
Disclosed is a swellable nonwoven fabric strip for a cable wrapping having a specific resistance of 3,000 .OMEGA..multidot.cm.sup.2 or less and a method for its manufacture. The strip is in the form of a fibrous flat material without perceptible layered construction, wherein the fibers are aligned mainly lengthwise of the strip and are 95 to 75 wt.- % in the form of viscose fibers and 5 to 25 wt.- % in the form of shrunken polyvinylalcohol fibers soluble in water beginning at 80.degree. C. The flat material is uniformly impregnated with a binding agent which under the action of water loses its ability to adhere. The strip contains swelling powder particles which swell upon the access of water but do not dissolve, the swelling agent being distributed in an amount of 20 to 40 g/m.sup.2. The strip is capable of swelling at the place of access of the water to at least 90% of its achievable thickness in approximately one minute.
摘要翻译:公开了一种用于电缆缠绕的可溶胀非织造布条,其具有3000欧姆/厘米2或更小的电阻率及其制造方法。 条带是纤维扁平材料的形式,没有可察觉的分层结构,其中纤维主要沿条带长度排列,并且以粘胶纤维的形式为95至75重量%,和5至25重量% 在80℃开始溶解于水中的收缩的聚乙烯醇纤维的形式。平均材料均匀地浸渍有在水的作用下粘附的粘结剂。 该条带含有膨胀粉末颗粒,其在水进入时膨胀但不溶解,溶胀剂的分布量为20至40g / m 2。 在大约1分钟内,条带能够在水进入其可达到的厚度的至少90%时膨胀。
摘要:
A water-soluble polymer coating for application to electrical wiring used in aircraft and other electrical structures is provided. The coating includes a water-soluble polymer such as polyvinyl acetate, polyvinyl alcohol, and methyl cellulose which is dissolved in water to form a solution. The solution may be applied to electrical wiring during manufacturing and dried to a film such that if the wire becomes damaged and exposed to water, a protective water-insoluble deposit is formed on the wiring. Alternatively, the solution may be applied to wiring which is already damaged to form a protective water-insoluble deposit.
摘要:
A thixotropic oil base gel having a low dielectric constant and high electrical resistivity is produced by agitating together in oil an alkali metal soap of a disproportionated rosin acid and a calcium compound that has a water solubility between 0.01 and 5 percent, and that has a pH lower than 11. Improved gelation is attained if small quantities of certain surfactants are present.
摘要:
The present invention relates to a method for manufacturing an insulating layer which can minimize the degree of warpage caused by polymer shrinkage at the time of curing and secure the stability of a semiconductor chip located therein, and a method for manufacturing a semiconductor package using an insulating layer obtained from the manufacturing method of the insulating layer.
摘要:
Thiobis phenolic antioxidants are efficiently dry or melt blended with a tree-resistant, crosslinkable polyethylene by first forming a blend, preferably a dry blend, of the antioxidant with a polyalkylene glycol (PAG), and then mixing the blend with the polyethylene. The incorporation of thiobis phenolic antioxidant and PAG blend into polyethylene provides the PE with high oxidative induction time (OIT) which is a measure of the oxidative stability of the PE.