摘要:
Provided are glass-fiber reinforced polycarbonate compositions with high stiffness and with improved thermal and rheological behavior in combination with improved flame-retardancy properties. Said compositions can be used to produce mouldings, especially those thin-walled housing parts or switch boxes with a wall thickness from 1.0 mm to 0.75 mm in the EE and IT sectors, while still meet the requirements for the fire-protection classification UL 94 VI, preferably V0.
摘要翻译:提供了具有高刚度并具有改进的热和流变行为以及改进的阻燃性能的玻璃纤维增强聚碳酸酯组合物。 所述组合物可用于生产模制品,特别是在EE和IT部门中壁厚为1.0mm至0.75mm的薄壁外壳部件或开关盒,同时仍符合防火等级UL 94 VI ,优选为V0。
摘要:
Provided are glass-fiber reinforced polycarbonate compositions with high stiffness and with improved thermal and rheological behavior in combination with improved flame-retardancy properties. Said compositions can be used to produce mouldings, especially those thin-walled housing parts or switch boxes with a wall thickness from 1.0 mm to 0.75 mm in the EE and IT sectors, while still meet the requirements for the fire-protection classification UL 94 VI, preferably V0.
摘要:
The invention relates to a multi-layered composite material comprising at least three superposed layers of fibre composite material which are interconnected face-to-face and are defined relative to one another as two outer layers of fibre composite material and at least one inner layer of fibre composite material. Each of these layers of fibre composite material contains continuous fibres which are aligned unidirectionally inside each layer and embedded in a polycarbonate-based plastic, said polycarbonate is selected from homopolycarbonate or copolycarbonate, the inner layers of fibre composite material are oriented identically and their orientation relative to the outer layers of fibre composite material is rotated by 30° to 90°, and the outer layers of fibre composite material have, in relation to the total volume of the fibre composite material layer, a lower fibre content by volume than that of the at least one inner layer of fibre composite material. The invention also relates to a method for producing the claimed multi-layered composite material and to a housing part that is suitable for use or application in a housing of an electronic device, which can be produced from said multi-layered composite material.
摘要:
The invention relates to a multi-layer structure containing a thermoplastic substrate, a barrier layer, a UV protection layer, and a cover layer: 1. a thermoplastic substrate material, 2. a barrier coat containing silicon-based precursors, 3. a UV protection layer based on a metal oxide (Me y O x ) having a composition of Me y /O x > 1, preferably > 1.2, wherein the metal oxide is selected from the group diethyl zinc, zinc acetate, triisopropyl titanate, tetraisopropyl titanate, cerium-β-diketonate, and cerammonium nitrate, 4. a covering layer, wherein the covering layer is formed of a silicon-based precursor having an element gradient in the oxygen concentration and/or carbon orhydrocarbon concentration, wherein the oxygen content of the cover layer close to the UV light-absorbing layer is less than on the opposite side of the cover layer and the carbon content close to the UV light-absorbing layer greater than on the opposite side of the cover layer, which is characterised by an excellent abrasion protection and a long-term resistance to ageing.
摘要:
The present invention relates to compositions comprising A) 30 to 45 parts by weight of at least one polymer selected from the group consisting of aromatic polycarbonate and aromatic polyester carbonate, B) 32 to 54 parts by weight of at least one polyalkylene terephthalate, preferably a polybutylene terephthalate, C) 16 to 23 parts by weight of at least one mixture comprising at least one polybutadiene-containing vinyl (co)polymer and at least one polybutadiene-free vinyl (co)polymer, D) 0.1 to 20.0 parts by weight (based in each case on the sum total of components A to C) of at least one polymer additive, where the polybutadiene content based on the sum total of the parts by weight of components A to C is 8% to 18% by weight, and where the total content of butadiene-free vinyl (co)polymer from component C based on the sum total of the parts by weight of components A to C is 3% to 12% by weight, and where the sum total of the parts by weight of components A to C in the polycarbonate composition is normalized to 100, and to composite components formed from these compositions and a polyurethane layer, which are notable for improved adhesion between the two layers, and to a process for producing the composite components.
摘要:
The invention relates to compositions, containing A) 70 to 95 parts by weight of at least one polymer selected from the group comprising aromatic polycarbonate and aromatic polyester carbonate, B) 1 to 10 parts by weight of a mixture containing at least one polybutadiene-containing vinyl (co)polymer and at least one polybutadiene-free vinyl (co)polymer, C) 1 to 20 parts by weight of at least one flameproofing agent containing phosphorus, selected from the group comprising phosphonate amines, phosphazenes, and monomeric and oligomeric phosphoric acid and phosphonic acid esters of general formula (V), wherein R 1 , R 2 , R 3 , and R 4 mean, independently of each other, possibly halogenated C 1 to C 8 alkyl, C 5 to C 6 cycloalkyl possibly substituted by alkyl, preferably C 1 to C 4 alkyl, and/or by halogen, preferably chlorine, bromine, C 6 to C 20 aryl, or C 7 to C 12 aralkyl, n means, independently of each other, 0 or 1, q means 0 to 30, X means a polynuclear aromatic group having 12 to 30 C atoms, or a linear or branched aliphatic group having 2 to 30 C atoms which can be OH-substituted and contain up to 8 ether bonds, D) 0.1 to 20.0 parts by weight (with respect to the sum of components A to C) of at least one polymer additive, wherein the polybutadiene content is 0.5 to 5.5 wt% with respect to the sum of the parts by weight of components A to C, and wherein the total content of butadiene-free vinyl co(polymer) from component B is 0.5 to 5.0 wt% with respect to the sum of components A to C, and wherein the compositions are free of thermoplastic polyesters such as polyalkylene terephthalates, and wherein the sum of the parts by weight of components A, B, and C in the polycarbonate composition is standardized to 100. The invention further relates to composite parts composed of said compositions and of a polyurethane layer, which composite parts are distinguished by improved adhesion between the two layers, and to a method for producing the composite parts.