摘要:
The invention relates to a lightweight sound insulating lining (1) for a body component of a motor vehicle, in particular in the form of a lightweight front wall lining, comprising a sound absorbing layer, a sound insulating layer which is directly connected to the sound absorbing layer and substantially air tight, as well as an adjoining foam layer (1.3), wherein the sound absorbing layer (1.1) is made of a porous absorber, preferably a fiber fleece or a foam, which has an air permeability in the range of 150 to 2000 liters/m2s at a test pressure of 100 Pa. The sound insulating layer (1.2) is formed by an integral skin layer of the foam layer (1.3) with a thickness of at least 0.5 mm, and is integrally joined to the porous absorber by back-foaming the porous absorber substantially without foam penetration therethrough. Furthermore, a method for manufacturing such a lining is disclosed.
摘要翻译:本发明涉及一种用于机动车辆的身体部件的轻质隔音衬里(1),特别是轻型前壁衬里的形式,包括吸音层,直接连接到声音的隔音层 吸收层和基本上气密的,以及相邻的泡沫层(1.3),其中吸声层(1.1)由多孔吸收体,优选纤维绒或泡沫制成,其透气性在 在100Pa的试验压力下为150〜2000升/ m 2,隔音层(1.2)由厚度为0.5mm以上的泡沫层(1.3)的整体表皮层形成,并与 多孔吸收器通过将多孔吸收体基本上不透过泡沫穿透而进行反发泡。 此外,公开了一种用于制造这种衬里的方法。
摘要:
The invention relates to a lightweight sound insulating lining (1) for a body component of a motor vehicle, in particular in the form of a lightweight front wall lining, comprising a sound absorbing layer, a sound insulating layer which is directly connected to the sound absorbing layer and substantially air tight, as well as an adjoining foam layer (1.3), wherein the sound absorbing layer (1.1) is made of a porous absorber, preferably a fiber fleece or a foam, which has an air permeability in the range of 150 to 2000 liters/m2s at a test pressure of 100 Pa. The sound insulating layer (1.2) is formed by an integral skin layer of the foam layer (1.3) with a thickness of at least 0.5 mm, and is integrally joined to the porous absorber by back-foaming the porous absorber substantially without foam penetration therethrough. Furthermore, a method for manufacturing such a lining is disclosed.
摘要翻译:本发明涉及一种用于机动车辆的身体部件的轻质隔音衬里(1),特别是轻型前壁衬里的形式,包括吸音层,直接连接到声音的隔音层 吸收层和基本上气密的,以及相邻的泡沫层(1.3),其中吸声层(1.1)由多孔吸收体,优选纤维绒或泡沫制成,其透气性在 在100Pa的试验压力下为150〜2000升/ m 2,隔音层(1.2)由厚度为0.5mm以上的泡沫层(1.3)的整体表皮层形成,并与 多孔吸收器通过将多孔吸收体基本上不透过泡沫穿透而进行反发泡。 此外,公开了一种用于制造这种衬里的方法。
摘要:
A method for producing a lightweight, sound insulating covering (1, 1′, 1″, 1″) for a body component of a motor vehicle, in particular a lightweight dashboard covering, wherein the covering (1, 1′, 1″, 1″) is produced as a foamed, sound absorbing molded part in a single-stage operation by injecting a reactive mix, comprising polyol and isocyanate, into a cavity (11) of a foaming tool (9), wherein before and/or during the injecting, at least one predetermined surface portion (17), defining the cavity (11) of the foaming tool (9), is temperature-controlled in such a manner that the foamed molded part comprises an integral substantially pore free skin (1.1) with a thickness of at least 0.5 mm on one side, and comprises an open porous surface (1.2) and/or a thinner, sound permeable skin (1.4) on its side opposite to said skin (1.1).
摘要:
A method for producing a lightweight, sound insulating covering (1, 1′, 1″, 1″′) for a body component of a motor vehicle, in particular a lightweight dashboard covering, wherein the covering (1, 1′, 1″, 1″′) is produced as a foamed, sound absorbing molded part in a single-stage operation by injecting a reactive mix, comprising polyol and isocyanate, into a cavity (11) of a foaming tool (9), wherein before and/or during the injecting, at least one predetermined surface portion (17), defining the cavity (11) of the foaming tool (9), is temperature-controlled in such a manner that the foamed molded part comprises an integral substantially pore free skin (1.1) with a thickness of at least 0.5 mm on one side, and comprises an open porous surface (1.2) and/or a thinner, sound permeable skin (1.4) on its side opposite to said skin (1.1).
摘要:
The present invention relates to diene polymers or diene copolymers, wherein she diene polymers or diene copolymers have, at the start of the polymer chains, tertiary amino groups of the formula (Ia), (Ib), (IIa) or (IIb) whereR1, R2 are the same or different and are each alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals which may contain heteroatoms such as O, M, S and/or Si,Z is a divalent organic radical which, as well as C and H, may contain heleroatoms such as O, N, S and/or Si,and, at the end of the polymer chains, silane-containing carbinol groups of the formula (III) or metal salts thereof or semimetal salts thereof, whereR3, R4, R5, R6 are the same or different and are each an H or alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals which may contain heteroatoms such as O, N, S and/or Si,A is a divalent organic radical which, as well as C and H, may contain heteroatoms such as O, N, S and/or Si.
摘要翻译:本发明涉及二烯聚合物或二烯共聚物,其中二烯聚合物或二烯共聚物在聚合物链开始时具有式(Ia),(Ib),(IIa)或(IIb)的叔氨基,其中 R 1,R 2相同或不同,各自可以含有杂原子如O,M,S和/或Si的烷基,环烷基,芳基,烷芳基和芳烷基,Z是二价有机基团,以及C和 H,可以含有诸如O,N,S和/或Si之类的天然原子,并且在聚合物链的末端,式(III)的含硅烷的甲醇基团或其金属盐或其半金属盐,其中R3, R 4,R 5,R 6相同或不同,并且各自为可以含有杂原子如O,N,S和/或Si的H或烷基,环烷基,芳基,烷芳基和芳烷基,A为二价有机基团, 以及C和H可以含有杂原子如O,N,S和/或Si。
摘要:
Polyurethane molded foams having a surface region and an interior region and comprising a flame-retardant solid, wherein the flame-retardant solid is present in the surface region in a proportion higher than a proportion of the flame-retardant solid in the interior region; processes for preparing the same; and materials comprising such foams.
摘要:
A semiconductor structure includes a semiconductor layer stack includes a semiconductor substrate of a first conductivity type, a heavily-doped buried layer of a second conductivity type, and a monocrystalline semiconductor layer of a third conductivity type formed on top of the semiconductor layer and the buried layer, a contact to the buried layer, the contact formed in a contact hole, and a lateral insulation of different portions of the semiconductor structure, the insulation formed in an isolation trench. A contact to the semiconductor substrate may be formed within the isolation trench.
摘要:
A semiconductor structure includes a semiconductor layer stack includes a semiconductor substrate of a first conductivity type, a heavily-doped buried layer of a second conductivity type, and a monocrystalline semiconductor layer of a third conductivity type formed on top of the semiconductor layer and the buried layer, a contact to the buried layer, the contact formed in a contact hole, and a lateral insulation of different portions of the semiconductor structure, the insulation formed in an isolation trench. A contact to the semiconductor substrate may be formed within the isolation trench.
摘要:
A process for the preparation of superabsorbent polymers by alkaline hydrolysis of polyacrylonitrile emulsions is disclosed. In an embodiment of the invention the process comprise preparing a PAN emulsion, subjecting the emulsion to alkaline hydrolysis, neutralizing the hydrolysate followed by drying, granulation and modifying the surface of the granular polymer by crosslinking. The process is characterized in that the isolation of the superabsorbent polymer entails neither alcohols nor organic solvents.