摘要:
Composite bodies, processes for making them, and their uses are disclosed, the composite bodies comprising a polyacetal portion and a modified thermoplastic vulcanizate portion bonded together, wherein the modified thermoplastic vulcanizate portion comprises a modified thermoplastic vulcanizate elastomer having a hardness of 30 to 90 Shore A and wherein the modified thermoplastic vulcanizate elastomer comprises: (a) 2 to 75% by weight of an at least partially crosslinked ethylene-propylene-diene rubber in from 1 to 50% by weight of a polyolefinic matrix further comprising 0.05 to 10% by weight of an ingredient selected from the group consisting of stabilizers, crosslinking aids, and mixtures thereof; (b) 1 to 30% by weight of a compatibilizer; and (c) 10 to 70% by weight of a non-olefinic thermoplastic material, all percentages by weight based on a total weight of the modified thermoplastic vulcanizate elastomer.
摘要:
Rotatable plastic rollers are produced by either injecting between a roller shaft and an outer running roller layer a thermoplastic material which, during cooling down, shrinks toward the roller shaft and away from the outer running roller layer on account of a contraction in volume or, in the multi-component injection-molding process, by first injecting the outer running roller layer and then injecting between the latter and the roller shaft a thermoplastic material which then likewise shrinks toward the roller shaft and away from the outer running roller layer. The process produces plastic rollers comprising an inner running roller layer (2), which is bonded solidly with the roller shaft (1), and an outer running roller layer (3), which can rotate freely with respect to said inner layer by means of a sliding gap (6). The roller shaft may optionally also be sheathed with a thermoplastic elastomer. This may take place in the same process during the multi-component injection molding.
摘要:
Process for producing a composite article from a polyacetal (component a) with directly molded-on functional elements made from one or more thermoplastic elastomers (component b), and wherein components a and b have differing hardness, and the material with the greater hardness (component a) is initially premolded in a first step in a mold, and then is either cooled and removed from the mold and then placed into another, larger cavity, or is partially removed from the mold, but remains in a portion of the mold, and is then moved to a larger cavity, or, without removal from the mold, remains in the same mold, which is enlarged by means of a movable device, and in a second step, by overmolding with the material with the lesser hardness (component b), the molding formed from component a is firmly bonded to this material and is then removed from the mold as a composite article.
摘要:
The novel molding made from a combination of polyacetal with directly molded-on function elements is distinguished by the fact that the function elements comprise one or more elastomers. Such elastomers comprise partially or fully hydrogenated nitrile rubbers, one- or multicomponent silicone rubbers or sulfur-containing rubbers.
摘要:
The present invention relates to a process for producing moldings from polyarylene sulfides, in particular polyphenylene sulfide, the result of which can be a particularly low level of flash formation.
摘要:
Composites are described, comprising polyacetal and at least one thermoplastic polyamide elastomer formed by a polyacetal molding which has been partially or completely coated with the thermoplastic polyamide elastomer or onto which one or more moldings composed of the thermoplastic polyamide elastomer have been directly molded. The composites are characterized in that the polyacetal and the thermoplastic polyamide elastomer have been bonded adhesively or cohesively to one another via injection of the polyamide elastomer onto the polyacetal molding, and in that the tensile bond strength between the polyacetal and the thermoplastic polyamide elastomer is at least 0.5 N/mm2. The composites may be used as connectors, as functional components with integrated sealing properties and/or with integrated damping properties, or else as non-slip and easy-grip elements.
摘要翻译:描述了包含聚缩醛和至少一种热塑性聚酰胺弹性体的复合材料,所述热塑性聚酰胺弹性体通过已经部分或完全地涂覆有热塑性聚酰胺弹性体的聚缩醛成型体形成,或者由热塑性聚酰胺弹性体组成的一个或多个模制品已被直接模塑。 复合材料的特征在于聚缩醛和热塑性聚酰胺弹性体通过将聚酰胺弹性体注入到聚缩醛成型体上而粘合地或内聚地粘合,并且聚缩醛和热塑性聚酰胺弹性体之间的拉伸粘合强度在 至少0.5 N / mm2。 复合材料可用作连接器,作为具有集成密封性能和/或具有整体阻尼性能的功能部件,或者作为防滑和易抓握元件。
摘要:
Composite products are described and encompass at least one polyacetal molding and at least one polyolefin molding, which have been bonded at at least one of their surfaces using an adhesion-promoting layer which is substantially composed of a copolymer or of a mixture of these which derives from at least one alpha-olefin and from at least one ethylenically unsaturated carboxylic acid, and/or from at least one ethylenically unsaturated carboxylic acid derivative, where the molar ratio of alpha-olefin to ethylenically unsaturated carboxylic acid and/or to ethylenically unsaturated carboxylic acid derivative is selected so as to obtain composites with a bond strength (measured by the tensile test at 23° C.) of at least 0.2 N/mm2.The composite products described can in particular be used for producing components which come into contact with fuels.
摘要翻译:复合产品被描述并且包括至少一个聚缩醛模制品和至少一种聚烯烃模塑件,它们已使用基本上由共聚物或它们的混合物组成的粘合促进层在其至少一个表面上结合 来自至少一种α-烯烃和至少一种烯键式不饱和羧酸和/或至少一种烯属不饱和羧酸衍生物,其中α-烯烃与烯属不饱和羧酸和/或烯属不饱和羧酸的摩尔比 选择酸衍生物以获得具有至少0.2N / mm 2的粘合强度(通过23℃下的拉伸试验测量)的复合材料。 所述的复合制品特别可用于制造与燃料接触的部件。
摘要:
Composite bodies, processes for making them, and their uses are disclosed, the composite bodies comprising a polyacetal portion and a modified thermoplastic vulcanizate portion bonded together, wherein the modified thermoplastic vulcanizate portion comprises a modified thermoplastic vulcanizate elastomer having a hardness of 30 to 90 Shore A and wherein the modified thermoplastic vulcanizate elastomer comprises: (a) 2 to 75% by weight of an at least partially crosslinked ethylene-propylene-diene rubber in from 1 to 50% by weight of a polyolefinic matrix further comprising 0.05 to 10% by weight of an ingredient selected from the group consisting of stabilizers, crosslinking aids, and mixtures thereof; (b) 1 to 30% by weight of a compatibilizer; and (c) 10 to 70% by weight of a non-olefinic thermoplastic material, all percentages by weight based on a total weight of the modified thermoplastic vulcanizate elastomer.
摘要:
Composites are described, comprising polyacetal and at least one thermoplastic polyester elastomer formed by a polyacetal molding which has been partially or completely coated with the thermoplastic polyester elastomer or onto which one or more moldings composed of the thermoplastic polyester elastomer have been directly molded. The composites are characterized in that the polyacetal and the thermoplastic polyester elastomer have been bonded adhesively or cohesively to one another via injection of the thermoplastic polyester elastomer onto the polyacetal molding, and in that the tensile bond strength between the polyacetal and the thermoplastic polyester elastomer is at least 0.5 N/mm2. The composites may be used as connectors, as functional components with integrated sealing properties and/or with integrated damping properties, or else as non-slip and easy-grip elements.
摘要翻译:描述了包含聚缩醛和至少一种热塑性聚酯弹性体的复合材料,所述热塑性聚酯弹性体通过已经部分或完全地涂覆有热塑性聚酯弹性体的聚缩醛成型体形成,或者由热塑性聚酯弹性体组成的一个或多个模制品已被直接模制。 复合材料的特征在于聚缩醛和热塑性聚酯弹性体通过将热塑性聚酯弹性体注入到聚缩醛成型体上而粘合或粘合,并且聚缩醛和热塑性聚酯弹性体之间的拉伸粘合强度为 至少0.5N / mm 2。 复合材料可用作连接器,作为具有集成密封性能和/或具有整体阻尼性能的功能部件,或者作为防滑和易抓握元件。
摘要:
A process is described in which surfaces of foamed plastics are provided with electrical conductor tracks, with the aid of selectively ablating processes.The process permits low-cost production of moldings from plastic with conductor tracks integrated on the surface.The products of the process may be used in the electrical and electronics industries, for example.