Environment-friendly flame-retardant PA6 material and preparation method thereof

Abstract

The invention discloses an environment-friendly flame retardant PA6 material which is prepared from the following components in parts by weight: 100 parts of a PA6 resin, 10-40 parts of a composite flame retardant and 1-10 parts of a compatible toughening agent, wherein the composite flame retardant comprises diphosphonate pentaerythritol ester melamine salt, melamine cyanurate, aluminium hypophosphite, polysiloxane and polytetrafluoroethylene in weight ratio of (3-12): (5-15): (5-25): (0.5-5.0): (0.1-2.0). The environment-friendly flame retardant PA6 material provided by the invention is relatively low in production cost while obtaining relatively good flame retardant effect; by matching the polysiloxane and the polytetrafluoroethylene with nitrogen / phosphorus compounds, the anti-dripping property of the PA6 material is improved, the friction coefficient of the PA6 material is effectively reduced and the smoothness is improved so as to provide relatively good wear resistance and have wider application in the field of engineering.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to an environment-friendly flame-retardant PA6 material and a preparation method thereof. Background technique [0002] PA6 (also known as nylon 6 or polyamide 6) is an electronic It is one of the engineering plastics used in large quantities in the electrical industry and rail transit vehicle structural components. However, the limiting oxygen index of PA6 is only about 22%, therefore, necessary flame retardant modification is required. [0003] Existing flame retardant PA6 mainly includes bromine / antimony flame retardant PA6 (such as Chinese patent document CN102146207A and Chinese patent document CN103102680A) and environment-friendly flame retardant PA6 (such as Chinese patent document CN101684196A, Chinese patent document CN102558850A, Chinese patent document CN102898683A, Chinese Patent document CN103788638A, Chinese patent document CN104004347A, etc.). ...

AI Technical Summary

Problems solved by technology

[0004] The advantage of bromine / antimony flame retardant PA6 is: better flame retardant effect can be obtained by using less flame retardant; the disadvantage is: a large amount of corrosive toxic gas and smoke are produced during combustion, which is prone to secondary disasters

The advantage of environmentally friendly flame retardant PA6 is: no toxic and harmful gases are produced; the disadvantage is: a large amount of flame retardant is required to obtain a better flame retardant effect

[0005] However, for flame retardant PA6, the biggest problem is that after flame retardant modification, the friction coefficient increases, wear resistance decreases, and brittleness increases, which limits its application in the engineering field