Antistatic halogen-free flame-retardation-reinforced PET (polyethylene glycol terephthalate) material and preparation method of same

Abstract

The invention discloses an antistatic halogen-free flame-retardation-reinforced PET (polyethylene glycol terephthalate) material containing the components in parts by weight as follows: 37.2-48.7 parts of PET resin, 10-26 parts of halogen-free flame retardant compound, 10-50 parts of glass fiber, 2-6 parts of composite antistatic agent, 0.5-8 parts of compatibilizer and 0.3-1.3 parts of processing additive. A preparation method of the PET material includes the steps as follows: (1) placing the composite antistatic agent, the compatibilizer and the processing additive in a high-speed mixing machine to dry mix for 2-4 minutes, wherein the revolving speed is 700-900 revolutions per minute; (2) placing the halogen-free flame retardant compound in the high-speed mixing machine to dry mix for 2-4 minutes, wherein the revolving speed is 600-800 revolutions per minute; and (3) adding the mixtures obtained from the step (1) and the step (2), the PET resin and the glass fiber in a double-screw extruder respectively through a feeder, and then conducting mixing, scattering, melt extrusion and granulation. The antistatic halogen-free flame-retardation-reinforced PET material has the advantagesof being excellent in antistatic effect and reinforced in flame retardation.

Description

technical field [0001] The invention relates to an antistatic halogen-free flame-retardant reinforced PET material and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Polyethylene terephthalate (PET), as an important polymer material, is widely used in the field of engineering plastics and textiles, and its modified products are widely used in lighting fixtures, cooling fans, connectors, coils Skeleton, electrical housing and other electrical and electronic components. [0003] However, due to the high resistivity of PET, under the conditions of 65% relative humidity and 25°C, the moisture absorption rate is only 0.4%, while the resistivity is as high as 10. 14 Ω·cm, it is very easy to generate static electricity, which will affect the appearance of the product (dust accumulation), damage electronic components, and even cause fire, explosion, electric shock and other accidents, thus limiting its use in the electrical ...

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Problems solved by technology

In general, the surface resistivity of the material reaches 10 8 ~10 12 Ω, volume resistivity 10 7 ~10 11 Ω cm is considered an antistatic material; the current antistatic polyethylene terephthalate generally has a surface resistivity of 10 8 Ω~10 11 , volume resistivity 10 8 ~10 11 Ω·cm, and are generally surface-coated antistatic materials or blended antistatic materials with small molecule antistatic compounds, so they cannot meet the needs

[0004] Chinese patent CN101230186A discloses an antistatic polyethylene terephthalate material and its preparation method, but this patent only involves simple antistatic modification of PET resin, and its improvement effect cannot meet the demand; Chinese patent CN101747599A discloses an antistatic modified polyester and its preparation method, but the flame retardant reinforced polyester containing halogen is not only difficult to achieve antistatic property, but also increases the flammability of the material and environmental pollution, so difficult to accept

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