High-heat-resistance ultralow-dielectric-constant quartz fiber-reinforced polypropylene material and preparation method thereof

Abstract

The invention discloses a high-heat-resistance ultralow-dielectric quartz fiber-reinforced polypropylene material and a preparation method thereof. The high-heat-resistance ultralow-dielectric-constant quartz fiber-reinforced polypropylene material comprises the following components in parts by weight: 60-93 parts of polypropylene resin, 2-10 parts of maleic anhydride grafted polypropylene and 5-30 parts of quartz fibers. According to the invention, the quartz fibers are added into the polypropylene resin, so the material has higher thermal deformation temperature and lower linear expansion coefficient on the premise of ensuring that the material has ultralow dielectric constant. Moreover, the maleic anhydride grafted polypropylene is added as a compatilizer, so the compatibility of the polypropylene resin and quartz fiber is improved, the effective combination of polypropylene resin and the quartz fibers is enhanced, the thermal deformation temperature of the material is increased, and the linear expansion coefficient, dielectric constant and dielectric loss of the material are reduced.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high heat-resistant ultra-low dielectric quartz fiber reinforced polypropylene material and a preparation method thereof. Background technique [0002] Although the existing polypropylene (PP) material has low dielectric constant and loss, its thermal deformation temperature is relatively low, and its linear expansion coefficient is relatively large, which cannot meet the high heat resistance and high Dimensional stability requirements. On the premise of ensuring that the material has ultra-low dielectric properties, by adding reinforcing fibers to the polypropylene resin, the heat distortion temperature of the polypropylene material can be further increased and its linear expansion coefficient can be reduced. However, since polypropylene is a non-polar crystalline material, and reinforcing fibers are generally polar materials, the compatibility between the two is po...

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Problems solved by technology

However, since polypropylene is a non-polar crystalline material, and reinforcing fibers are generally polar materials, the compatibility between the two is poor, which will also affect the heat distortion temperature and linear expansion coefficient of polypropylene materials.

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