摘要:
Described is an aqueous binder composition for mineral fibres comprising a component (i) in the form of one or more compounds selected from -compounds of the formula, and any salts thereof Formula (I): in which R1 corresponds to H, alkyl, monohydroxyalkyl, dihydroxyalkyl, polyhydroxyalkyl, alkylene, alkoxy, amine; -compounds of the formula, and any salts thereof Formula (II): in which R2 corresponds to H, alkyl, monohydroxyalkyl, dihydroxyalkyl, polyhydroxyalkyl, alkylene, alkoxy, amine; a component (ii) in the form of one or more compounds selected from the group of ammonia, amines or any salts thereof; a component (iii) in the form of one or more carbohydrates; a component (iv) in the form of one or more compounds selected from sulfamic acid, derivatives of sulfamic acid or any salt thereof.
摘要:
A composition includes glass fibers and a polyether antistatic agent. The polyether antistatic agent has a molecular weight of less than about 2000, or less than about 1000. Exemplary polyether antistatic agents include polyethylene glycol, polypropylene glycol, a glycerol polyether, and combinations thereof. The polyether antistatic agent has a viscosity of less than about 600 cSt at 75 °F, or less than about 200 cSt at 75 °F. The composition may further include a solvent for the polyether antistatic agent; the solvent may include one or more organic soluble electrolytes, water or a combination thereof. Exemplary organic soluble electrolytes include calcium acetate, lithium acetate, an amine acetate, sodium benzoate, and combinations thereof. The composition may be used in various insulation applications, including in an insulation batt, insulation roll, insulation board, insulation pipe or unbonded glass fiber insulation. Methods for making glass fibers for use in insulation and methods for installing unbonded glass fiber insulation are also described.
摘要:
Dual coated optical fibers and methods for forming dual coated optical fibers are disclosed herein. The dual coated optical fibers include a glass fiber comprising a core region, a cladding region and a dual coating layer surrounding the glass fiber. The dual coating layer includes an inner coating and an outer coating. The inner coating surrounds the glass fiber and includes a first polyimide material. In one embodiment the first polyimide material also includes an adhesion promoter. The outer coating surrounds and is in direct contact with the inner coating and includes a second polyimide material having a decomposition threshold temperature greater than the first polyimide material. The second polyimide material may also have a modulus of elasticity greater than the first polyimide material and a moisture uptake lower than the first polyimide material.
摘要:
The present invention concerns a textile support for bituminous membranes, particularly for waterproofing roof surfaces of buildings, characterised by a high dimensional stability. The support comprises at least two layers (1, 2) of non- woven polyester or polymeric material in general and a plurality of longitudinal reinforcing filaments (3). The reinforcing filaments (3), preferably of glass, have been treated in advance with a size which allows the formation of stable chemical bonds, not strongly influenced by temperature.
摘要:
The present invention provides a method of coating a substrate having a surface defined by a layer of fluoropolymer. The method utilizes an aqueous dispersion that includes: particles of melt-processible fluoropolymer in an amount of 30 to 70% by weight; a fluorinated surfactant in an amount of not more than 250ppm based on fluoropolymer solids of the aqueous dispersion; and a non-ionic surfactant comprising an ethoxylated aliphatic alcohol in an amount of 2 to 15% by weight based on total solids of the aqueous dispersion. The aqueous dispersion is free or substantially free of aromatic group containing non-ionic surfactants. The aqueous dispersion may be optionally diluted and/or modified with additional components to obtain a coating composition. The coating composition may then be applied on at least part of the surface of the substrate to define the fluoropolymer layer.
摘要:
Sizing/finishing composition comprising poly(hydroxy amino ether), and a solubilizing/emulsifying agent present in an amount sufficient to solubilize or emulsify the polymer in water.
摘要:
The present invention provides glass fiber strands coated with non-hydratable, inorganic solid lubricant particles useful for reinforcing composites such as laminated electronic supports.
摘要:
The present invention provides reinforced laminates for printed circuit boards having a woven reinforcement fabric of a yarn including E-glass fibers having a coating which is compatible with the polymeric matrix material. The yarn has a loss on ignition ranging from about 0.01 to about 0.6 weight percent and an Air Jet Transport Drag Force of greater than about one gram force per gram mass of yarn evaluated using a needle air jet nozzle unit having an internal air jet chamber having a diameter of 2 millimeters and a nozzle exit tube having a length of 20 centimeters at a yarn feed rate of about 274 meters (about 300 yards) per minute and an air pressure of about 310 kiloPascals (about 45 pounds per square inch) gauge. The laminate has a flexural strength in the fill direction of the fabric greater than about 3 x 10 kilograms per square meter (about 42.7 kpsi). The yarn coating can include polyester and a polymer selected from vinyl pyrrolidone polymers, vinyl alcohol polymers, starches and mixtures thereof. Alternatively, the laminate has a coefficient of thermal expansion in the z-direction of less than about 4.5 percent at a temperature of 288 DEG C.
摘要:
A heteropolysaccharide-containing glass fiber sizing composition that provides improved application uniformity when applied to hot fibers via a roll coater.
摘要:
본 발명은 수성 복합 접착제 조성물 및 이를 사용하여 섬유상 재료를 결속하는 방법에 관한 것으로서, 보다 상세하게는, a) 하나 이상의 환원당, b) 하나 이상의 아미노산, 및 c) 하나 이상의, 아미드성 화합물 또는 페놀성 화합물과 포름알데히드와의 축합생성물을 포함하는 수성 복합 접착제 조성물 및 이를 사용하여 섬유상 재료를 결속하는 방법에 관한 것이다. 본 발명의 수성 복합 접착제 조성물은, 기존의 페놀 포름알데히드 수지(PFR)를 단독 사용하였을 경우와 비교하여 저렴하면서도 동등 이상의 물성을 발현할 수 있고, 최종 제품이 포름알데히드나 페놀 같은 유독물을 ppm 단위 수준으로 저감화되어 거의 방출하지 않으며, 가공 시 기존 PFR 수지의 취약점인 취기 문제를 감소시킬 수 있고, 포름알데히드나 페놀 같은 유독물을 함유하고 있지 않은 기존의 친환경 수지에 비해서 가공된 제품의 내수성과 인장강도, 경도 등의 기계적 특성 및 분진율을 현저히 개선할 수 있을 뿐만 아니라, 접착제 용액이 방부성능을 가지고 있어 접착제 성분을 사용하여 결속된 섬유상 재료 제조 공정 중 발생하는 공정수를 미생물로 인한 부패 없이 재활용이 가능하도록 하여 경제적이다.