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Polyamide composition

A technology of composition and weighing, applied in the direction of household components, applications, household appliances, etc., can solve the problems of moisture ingress, reducing stress tolerance, etc.

Active Publication Date: 2015-09-30
LANXESS DEUTDCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of injection molded products in electrical engineering / electronic devices, shrinkage can lead to moisture ingress and reduced stress tolerance

Method used

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  • Polyamide composition
  • Polyamide composition

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preparation example Construction

[0054] Numerous procedures have become known for the preparation of polyamides, in which different monomer units are used depending on the desired end product, different chain transfer agents are used to build up the desired molecular weight, or else there is a chain transfer agent for the intended subsequent work-up. The monomer of the reactive group.

[0055] The industrially relevant processes for producing polyamides are generally carried out by polycondensation in the molten state. In the context of the present invention, the hydrolytic polymerization of lactams is also considered polycondensation.

[0056] The PA 6 and PA 66 used as component A) are semicrystalline polyamides. According to DE 10 2011 084 519 A1, semicrystalline polyamides have an enthalpy of fusion measured by the DSC method according to ISO 11357 in the second heating operation and integrating the melting peak in the range from 4 to 25 J / g. In contrast, amorphous polyamides have an enthalpy of fusion ...

example

[0258] In order to demonstrate the improvement of the properties described according to the invention, corresponding polymer compositions were first prepared by compounding. For this purpose, the individual components according to Table 2 were mixed in a twin-screw extruder (ZSK 25 mixer, from Coperion Werner & Pfleiderer (Coperion Werner & Pfleiderer) (Stuttgart, Germany) at a temperature between 240°C and 280°C, discharged as one strand, cooled until granulatable and granulated. After drying (usually at 70°C in a vacuum oven for two days), the pellets were processed at temperatures ranging from 240°C to 280°C to obtain standard test samples for corresponding tests.

[0259] Glow wire stability was determined using the GWFI (Glow Wire Flammability Index) glow wire test according to IEC 60695-2-12 using a round blank with a diameter of 80 mm and a thickness of 0.75 mm.

[0260] Izod impact resistance is determined according to ISO 180-1U on new injection molded test specimens...

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Abstract

Flame resistant compositions may include compositions of nylon-6 (PA 6) or nylon-6,6 (PA 66) and melamine cyanurate, glass beads and glass fibres, and the compositions may be produced and used for production of products for the electrical industry, preferably electrical components, such as residual current circuit breakers and other circuit breakers.

Description

technical field [0001] The invention relates to compositions based on nylon-6 (PA 6) or nylon-6,6 (PA 66) comprising melamine cyanurate, glass beads and glass fibers, and to the use of the compositions of the invention for the production of Production and use of products for the electrical industry, preferably electrical components, more preferably for the production of residual current circuit breakers and other circuit breakers. Background technique [0002] In order to modify the characteristics of processing, handling and use, most plastics are provided with additives and with fillers and reinforcements. The latter improves properties like stiffness, strength, heat resistance, dimensional stability and reduces thermal expansion of plastic-based products. [0003] Of particular importance for plastic compositions are fillers and reinforcements consisting of minerals or glasses, in particular borosilicate glasses or silicate glasses, which are used in various forms, for e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08K13/04C08K7/20C08K7/28C08K7/14C08K5/3492C08K5/20C08K3/22
CPCB29C45/0001C08K5/20B29L2031/3481B29K2309/08B29C47/0004B29K2049/00B29K2509/08C08K7/20C08K5/34924C08K7/14C08K2003/2241C08K7/28C08K3/22B29C49/0005C08K5/34922C08K13/04C08L77/02C08L77/06C08L2203/20B29C48/022
Inventor 约亨·恩特尔沃尔夫冈·万巴赫马蒂亚斯·比恩米勒
Owner LANXESS DEUTDCHLAND GMBH