A kind of flame retardant thermoplastic polyamide composition

Abstract

The invention discloses a polyamide composition with flame retardance and thermoplasticity. The polyamide composition with flame retardance and thermoplasticity comprises the following components in percentage by weight: 30-90% of thermoplastic polyamide resin, 5-40% of a brominated flame retardant, 0.5-15% of a flame-retardant synergist and 0-50% of a reinforcing material. According to the polyamide composition, the brominated flame retardant, the high-efficiency flame-retardant synergist (namely zinc borate) and organic silicon are added in polyamide resin, on the one hand, the polyamide composition can replace antimony trioxide which is a rare material and is limited to be exploited by the nation at present, limited strategic resources of the nation can be saved, and the cost is lowered; and on the other hand, the flame retardance, a CTI (comparative tracking index) value and GWIT (glow wire ignition temperature) of the polyamide composition can be improved greatly, and the safety guarantee is provided for the use of the flame-retardant polyamide product on electronic appliances with high requirements.

Description

technical field [0001] The invention relates to a brominated flame-retardant thermoplastic polyamide composition, in particular to a brominated flame-retardant thermoplastic polyamide composition with high efficiency flame retardancy, high CTI value and high glow wire GWIT and a preparation method thereof. Background technique [0002] Because polyamide has excellent mechanical properties and formability, it is widely used in industries such as automobiles, construction, electronic appliances and home appliances. In some industries with electricity or high temperature applications, such as the electrical and electronic industry, polyamides need to be flame retardant. In general, brominated polystyrene is used as a flame retardant in polyamide for the purpose of improving flame retardancy. By using antimony compounds in brominated flame retardants, excellent flame retardancy and mechanical properties can be imparted. performance. However, its electrical performance CTI and ...

AI Technical Summary

Problems solved by technology

[0007] However, the traditional antimony flame retardant synergist has poor thermal stability and low glow wire GWIT temperature

However, pure zinc borate has an unsatisfactory synergistic effect with halogen flame retardants, and the flame retardant effect can only be achieved by adding a high amount. At the same time, its surface leakage performance is not good, and its mechanical properties drop significantly.