Low-floating fiber flame-retardant reinforced PBT (Polybutylece Terephthalate) composite material and preparation method thereof

Abstract

The invention relates to a low-floating fiber flame-retardant reinforced PBT (Polybutylece Terephthalate) composite material and a preparation method thereof, and belongs to the technical field of plastic modification. The material comprises the following components in percentage by weight: 55 to 70% of PBT, 5 to 15% of toughening agent, 0.2 to 0.5% of silane coupling agent, 10 to 20% of chopped glass fiber, 10 to 15% of environment-friendly fire retardant, 0.1 to 0.5% of antioxidant, 0.1 to 1% of lubricant, and 0.3 to 0.8% of floating fiber curing agent. The preparation method comprises the steps of mixing, extruding and injection molding. The prepared low-floating fiber flame-retardant reinforced PBT composite material has low floating fiber, fire retardance and reinforcement performance.

Description

technical field [0001] The invention relates to the technical field of plastic modification, in particular to a low-floating fiber flame-retardant reinforced PBT composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT for short), which belongs to the polyester series, is composed of 1,4-butanediol (1,4-Butylene glycol) and terephthalic acid (PTA) or terephthalic acid Ester (DMT) polycondensation, and a milky white translucent to opaque, crystalline thermoplastic polyester resin produced through a mixing process. Together with PET, it is collectively referred to as thermoplastic polyester, or saturated polyester. [0003] Because PBT has good heat resistance, weather resistance, chemical resistance, good electrical properties, low water absorption, and good gloss, it is widely used in electronic appliances, auto parts, machinery, household products and other fields, and PBT products are also Together with PPS, PC, ...

AI Technical Summary

Problems solved by technology

However, traditional PBT products have the following problems: 1. When in use, accidents such as burning due to factors such as open flames or static electricity often occur; 2. The phenomenon of floating fibers is prone to decrease in surface smoothness during injection molding, and the appearance is poor. ,Affect

This patent avoids the floating fiber phenomenon and is flame retardant, but it is a non-reinforced product

[0006] In summary, there is no PBT composite material with low floating fiber, flame retardancy and reinforcement in the prior art

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