摘要:
Composites made from at least two plies are described, where one of the outer layers is a layer comprising glass fibers, and in particular is a staple glass fiber nonwoven. The layers have been bonded to one another by needling, and the extent of this needling is such that some of the fibers of the organic nonwoven emerge from the surface of the glass fiber sheet. The composite is then provided with a binder by using a rotating roll for single-side application to the glass fiber surface. The composites are particularly suitable for producing bituminized prefabricated roofing and waterproofing sheets, and as backings for coatings, e.g. PVC coatings.
摘要:
The present invention provides non-woven laminate that is not subjected to final consolidation by a binder and the production thereof. The laminate includes at least one non-woven mat containing glass staple fibers pre-consolidated with a resin, and at least one non-woven layer of synthetic fibers. The synthetic non-woven layers and the pre-consolidated non-woven mat of glass fibers are bounded together by needling such that a portion of the fibers of the upper synthetic non-woven layer passes through the non-woven mat of glass fibers possibly through the underlying synthetic non-woven layer. The synthetic fibers are heat shrunken and the laminate is binder free.
摘要:
In accordance with the invention, a laminate of two or more layers and the method of making it is provided. The laminate includes at least one organic synthetic filament non-woven layer, and at least one woven web or scrim of glass fibers pre-consolidated by a binding agent. The polyester non-wovens and the woven webs or scrims are bound by needling such that a part of the (e.g., polyester) filaments penetrate through the laminate and emerge at the lower surface of the laminate and lie adjacent thereto The formed laminate is subjected to a final consolidation by an acrylate or a styrene binder.
摘要:
Disclosed is a base inliner comprising a textile sheet material and a reinforcement, wherein said reinforcement comprises monofilaments whose diameter is at least 0.1 mm, preferably between 0.1 and 1 mm. The base inliner is useful for producing optionally bituminized roofing and sealing membranes.
摘要:
A non-wovens fabric of electret fibers having an improved charge stability and comprising materials which chiefly comprise a fiber-forming addition or condensation polymer and 0.01 to 30% by weight (preferably 0.01 to 10, in particular 0.1 to 5, % by weight), based on the weight of the material, of organic or organometallic charge control agents, wherein the non-woven fabric comprises at least two types of electret fiber which are made of different materials which differ from one another in that they comprise different fiber-forming addition or condensation polymers and if appropriate also different charge control agents is described.
摘要:
A detector for detecting invisible radiation and charged particles is composed of at least one radiation-absorbing panel and at least one optical waveguide arranged parallel to the surface of said panel and containing a fluorescent dyestuff. The luminescent light produced in the panel by the absorbed radiation is converted into a fluorescent radiation in the optical waveguide conducted to a photosensitive semiconductor component by total reflection and measured at that point.
摘要:
Transparent thermoplastic molding composition of a polymer containinga) 10 to 95% by weight of units which are derived from a compound of the formula (I)R.sub.2.sup.1 C.dbd.CF--COO--C(CF.sub.3).sub.2 R.sup.2 (I)b) 90 to 5% by weight of units which are derived from one or more compounds of the formula (II) ##STR1## and c) 0 to 85% by weight of units which are derived from a compound of the formula (III)R.sub.2.sup.7 C.dbd.CF--COO--CR.sub.3.sup.8 (III)The molding composition is used for the production of optical objects, in particular for the production of optical fibers.
摘要翻译:聚合物的透明热塑性模塑组合物,其含有a)10至95重量%的衍生自式(I)化合物的单元R 21 C = CF-COO-C(CF 3)2 R 2(I)b)90至5重量% 衍生自一种或多种式(II)的化合物的单元(ⅰ)和c)0至85重量%的衍生自式(Ⅳ)化合物的单元R 27 C = CF -COO-CR38(III)模塑组合物用于制造光学物体,特别是用于生产光纤。
摘要:
Mechanically robust star couplers of polymer optical waveguides having low insertion losses and small fluctuations between the individual output fibers are obtained if polymer optical waveguides are arranged in parallel in the middle region of an apparatus and fused with one another under pressure and with the supply of heat. The optical cladding of the polymer optical waveguides has been previously removed. The method is easy and cost-effective. The apparatus is composed of a lower part with a channel recessed therein and an upper part with a male die located therein, which male die corresponds in its shape to the shape of the channel.
摘要:
Channels in which polymeric optical waveguides can be laid can be milled in surfaces of plastic sheets by means of an excimer laser. The free space between the optical waveguides is filled up with a transparent casting resin.The channels produced by means of the laser are distinguished by high dimensional accuracy and low surface roughness.
摘要:
Electret fibers having improved charge stability are described which are composed of a material which predominantly contains a fiber-forming polymer or polycondensate and 0.01 to 30% by weight (preferably 0.01 to 10, in particular 0.1 to 5%, by weight), based on the weight of the material, of organic or organometallic charge control compounds, as contained in toners for electrophotographic processes, and a process for the production thereof. In addition, textile materials containing these electret fibers are described.