FLAME-PROTECTED, PARTIALLY AROMATIC POLYAMIDE MOLDING COMPOUNDS

摘要

The invention relates to a flame-protected polyamide molding compound on the basis of semi-crystalline polyamides. The polyamide molding compound consists of: (A) 30 to 92% by weight of at least one aliphatic or partially aromatic semi-crystalline polyamide having a melting temperature (Tm) in the range of 240ºC to 340ºC, preferably in the range of 270ºC to 340ºC; (B) 0 to 50% by weight of at least one filling and reinforcing agent; (C) 8 to 18% by weight of at least one halogen-free flame protection agent; (D) 0 to 2.0% by weight of at least one barium carboxylate; (E) 0 to 5% by weight of at least one additive; wherein the percentages by weight of components (A) to (E) together add up to 100%, and with the proviso that the halogen-free flame protection agent of component (C) is designed on the basis of a barium phosphinate if the portion of component (D) is in the range of 0 to 0.1% by weight. The invention further relates to the use of barium carboxylate in a polyamide molding compound comprising a halogen-free flame protection agent for the prevention of the corrosive effect during processing. The molding compounds meet the fire protection classification V0 according to UL94, have no or only low corrosive effect on the machine components during thermoplastic processing and have good mechanical properties. They are suited for the production of molded bodies, particularly thin-walled molded bodies, for the electrical and electronics industry, such as housings, housing components or connectors.