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Polyamide compositions

A composition, polyamide technology, applied in the direction of cell structure combination, battery pack parts, home appliances, etc., can solve the problems of not providing instructions on behavior and stability, and not explaining the flame retardancy of polyamides

Inactive Publication Date: 2019-10-22
LANXESS DEUTDCHLAND GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] EP 3 034 553 A1 teaches thermally stabilized polyamide compositions containing reinforcing agents, including inter alia carbon fibres, organically substituted metal phosphinates, at least one aluminum salt of phosphonic acid and at least one polyol (e.g. , dipentaerythritol), where zinc borate can ideally be avoided, however, does not address possible specific issues in imparting flame retardancy to carbon fiber reinforced polyamides
EP 3 034 553 A1 also provides no indication of the behavior and stability of the compositions described therein at varying temperatures and in hot and humid climates

Method used

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  • Polyamide compositions
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[0381] 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 in Table II were extruded in a twin-screw extruder (from Coperion Werner & Friedel, Stuttgart, Germany) at temperatures ranging from 270° C. to 300° C. (Coperion Werner & Pfleiderer's ZSK 26 compounder), extruded, cooled until pelletizable, and pelletized, with the carbon fibers introduced at the rear (die end) region of the extruder using a side extruder. After drying (typically at 80°C for two days in a vacuum oven), the pellets are processed at temperatures ranging from 270°C to 290°C to give standard test specimens for the respective tests.

[0382]Flammability of test specimens having dimensions of 125mm·13mm·1.5mm was determined according to the UL94V method (Underwriters Laboratories Inc., "Test for Flammability of Plastic Materials for Parts in Devices an...

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Abstract

The present invention relates to polyamide compositions. The present invention relates to compositions based on polyamide 6 and / or polyamide 66, the compositions containing carbon fibres, at least onealuminium salt of phosphonic acid and one or more organic phosphinic acid salts and / or one or more diphosphinic acid salts. The compositions and articles of manufacture producible therefrom based oncarbon fibre-containing PA 6 or PA 66, and at least one aluminium salt of phosphonic acid and also at least one organic metal phosphinate exhibit significantly improved flexural strength and a low propensity for surface changes in a hot and humid climate without impairing flame retardancy in the UL94 test and without requiring the use of zinc borate.

Description

technical field [0001] The invention relates to compositions based on polyamide 6 and / or polyamide 66 containing carbon fibers, at least one aluminum salt of phosphonic acid and one or more organic phosphinates and / or one or more Diphosphonates. Background technique [0002] Due to their good mechanical stability, their chemical resistance and good processability, polyamides are important thermoplastic materials, especially in the field of components for motor vehicles. Glass-fibre-reinforced polyamides have therefore been an important component in demanding motor vehicle applications for many years. Although the internal combustion engine has been the dominant drive concept for many years, new requirements regarding material selection have arisen in the search for alternative drive concepts. Electromobility plays an important role here, where the internal combustion engine is partially (hybrid) or completely (electric) replaced by one or more electric motors, which typica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K13/04C08K7/06C08K3/32C08K5/5313C08K5/20C08K3/04C08K3/34H01M50/222H01M50/227H01M50/229
CPCC08K13/04C08K7/06C08K3/32C08K5/5313C08K5/20C08K3/04C08K3/34C08K2003/327C08K2201/014C08L2201/02H01M50/227H01M50/229H01M50/222C08L77/02C08K5/5317Y02E60/10C08L77/06C08K5/5333C08K5/175C08K7/14C08L67/02H01M10/613H01M10/625B29C45/0001B29K2077/00B29K2105/12B29K2307/04B29K2309/08B29K2995/0016B29L2031/3468C08G69/14C08G69/26C08J5/042C08J2377/02C08J2377/06C08J2467/02C08J2477/10C08K5/13C08K13/02C08L2201/08C08L2203/20C08L2205/025H01M10/425H01M2010/4271H01M2220/20
Inventor 马蒂亚斯·比恩米勒约亨·恩特尔
Owner LANXESS DEUTDCHLAND GMBH