Flame-retardant glass fiber reinforced polypropylene material with low dielectric constant and high thermal conductivity and preparation method thereof

Abstract

The invention provides a flame-retardant glass fiber reinforced polypropylene material with low dielectric constant and high thermal conductivity and a preparation method of the flame-retardant glass fiber reinforced polypropylene material. The flame-retardant glass fiber reinforced polypropylene material comprises the following components in percentage by mass: 20-55% of polypropylene, 10-30% of low dielectric glass fiber, 0-5% of a compatilizer, 10-20% of a halogen-free flame retardant, 0-10% of a thermal conductive filler and 0.2-1% of an antioxidant. By introducing the low-dielectric glass fiber material, the good dielectric property of the composite material is ensured, and meanwhile, the glass fiber provides good mechanical property and thermal stability for the material; silicon carbide is added as a heat-conducting filler, so that the heat conductivity coefficient of the material is effectively improved, and rapid accumulation of heat in a device is avoided; and the high-efficiency hindered phenol and thioether composite antioxidant and the compatilizer are selected, so that the obtained sample has more excellent weather resistance. The glass fiber reinforced polypropylene material disclosed by the invention has the characteristics of low dielectric, high heat conductivity, excellent flame retardance and the like, and meets the requirements of parts such as a capacitor energy storage shell, a junction box and a precision electronic instrument shell on materials.

Description

technical field [0001] The invention relates to the field of modification of polymer materials, in particular to a low-dielectric, high-thermal-conduction, flame-retardant glass fiber-reinforced polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene-based dielectric composite materials have the advantages of small specific gravity, corrosion resistance, and easy processing and molding, so they have become ideal materials in the field of thermal control, especially in the field of electrical and electronics. In order to comply with the development of microelectronic integration and assembly technology, the standard requirements of electronic components are becoming more and more miniaturized, refined, and multi-functional, so that the requirements for power output are also increasing sharply, which will undoubtedly lead to long-term mass production of electronic equipment. Heat, the heat accumulates rapidly in the device, and the ...

AI Technical Summary

Problems solved by technology

However, glass fiber reinforced polypropylene material is a flammable material. Due to the "wick" effect of glass fiber, the burning speed is fast, and a large amount of heat is released at the same time, which further deteriorates the flame retardant performance.

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