High-fluidity and reinforced-flame-retardant PBT material and preparation method thereof

Abstract

The invention relates to a high-fluidity and reinforced-flame-retardant PBT material. The PBT material is composed of the following raw materials, in percent by weight: 49-68% of PBT resin, 11.5-13.5% of a flame retardant, 0-3% of a toughening agent, 20-33% of glass fibers, 0.2-0.5% of hyperbranched resin and 0.3-1% of other auxiliary agents. A preparation method of the high-fluidity and reinforced-flame-retardant PBT material is simple, firstly, the PBT resin is dried, and the dried PBT resin and the flame retardant are mixed and stirred, secondly, the toughening agent, the hyperbranched resin and the other auxiliary agents are added, and uniform stirring is performed, and finally, the uniformly mixed raw materials and the glass fibers are added to a melt extruder for extrusion, so that the high-fluidity and reinforced-flame-retardant PBT material is obtained. Compared with the prior art, the high-fluidity and reinforced-flame-retardant PBT material has the beneficial effects that the high-fluidity and reinforced-flame-retardant PBT material has good thermal stability, no white stripes precipitate during injection molding at 300 DEG C, besides, pungent smells cannot be emitted under high-temperature heating, the surface of a product is smooth, and the high-fluidity and reinforced-flame-retardant PBT material can be used for electronic appliance appearance parts such as blade handles, air discharging grilles and hot-runner one-module-multiple-output products which need high fluidity.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a high-fluidity reinforced flame-retardant PBT material and a preparation method thereof. Background technique [0002] PBT resin is cost-effective, has excellent comprehensive mechanical properties, high temperature resistance, and is easy to flame retardant. It especially solves the shortcomings of nylon’s unstable water absorption size on the one hand and poor electrical performance of nylon water absorption on the other hand. After modification and processing, it includes the current low temperature resistance. 40℃ super-tough PBT is widely used in heat-resistant parts of home appliances and electronic appliances, and has the potential to replace nylon. [0003] Hyperbranched resins are different from the previous branched resins. For example, the branched high-flow nylon resin of Zhuzhou Times New Material Technology Co., Ltd. can actually be considered as...

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Problems solved by technology

[0005] The invention provides a high-flow reinforced flame-retardant PBT material and a preparation method thereof, aiming to solve the problem of odor and floating fibers caused by poor fluidity of PBT materials in the prior art

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