Flame-retardant and high temperature-resistant polyimide compound and preparation method thereof

Abstract

The invention discloses a flame-retardant and high temperature-resistant polyimide compound and a preparation method thereof. The compound comprises, by weight, 40-70 parts of polyimide, 0.1-30 parts of polyol, 0-10 parts of an anti-impact modifier, 0-60 parts of a filler, 5-20 parts of a flame retardant, and 0.2-1 part of a heat stabilizer. The polyol and the polyimide are blended and modified, so the high temperature ageing resistance and the flame retardation performance are effectively improved; and the carbon formation ability of the polyimide is improved, so the burning time is shortened, and the flame retardation performance of the polyimide is improved. The use amount of the flame retardant is effectively reduced, so influences of the flame retardant on the the high temperature ageing resistance of the polyamide are reduced. The anti-impact modifier regulates the anti-impact strength of alloy and plays a great role in enhancement of the compatibility of polyester and polyamide. The compound is suitable for being applied to high-temperature and high-humidity application environment of precise electronic and electric parts and automobile engine compartments and the most advanced fields of aerospace.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a flame-retardant and high-temperature-resistant polyamide compound and a preparation method thereof. Background technique [0002] Due to their excellent mechanical properties, chemical resistance, processability, and thermal and oxidative aging resistance, polyamide compositions are often used in the fields of electronic appliances, automobiles, aerospace, and electric tools that have strict requirements on the working environment. Applications below the hood are particularly common. With the development of engine miniaturization, turbocharging replaces natural air intake to increase the intake air volume of the engine, thereby increasing the power and torque of the engine. This forces the high temperature resistance level of the materials used around the engine to be continuously upgraded, and the ambient temperature around the engine can reach an operating temperature above ...

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Problems solved by technology

At the same time, it also has a high flame retardant level, and there are few reports on this kind of flame retardant and high temperature resistant polyamide materials.

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