Antistatic halogen-free flame-retardant reinforced PET/PTT alloy material and preparation method thereof

Abstract

The invention discloses an antistatic halogen-free flame-retardant reinforced PET / PTT alloy material and a preparation method thereof. The antistatic halogen-free flame-retardant reinforced PET / PTT alloy material comprises following ingredients, by weight, 25.5 to 40% of PET resin, 10 to 25% of PTT resin, 10 to 25% of a halogen-free fire retardant compound, 10 to 40% of glass fiber, 2 to 5% of a compound antistatic agent, 1 to 8% of a compatilizer, and 0.5 to 1.5% of a processing agent. The preparation method comprises following steps: 1) the compound antistatic agent, the compatilizer and the processing agent are delivered into a high-speed mixer for 2 to 4min of dry blending, wherein the rotating speed of the high-speed mixer is 700 to 900rad / min; 2) the halogen-free fire retardant compound is added into another high-speed mixer for 2 to 4min of wet blending, wherein the rotating speed is 600 to 800rad / min; and 3) the mixture obtained in step 1), the mixture obtained in step 2), PET resin, PTT resin and glass fiber are all delivered into a double-screw extruder by a feeder, and are subjected to mixing, dispersing, melt extrusion and pelletizing. Antistatic effect, comprehensive performances and heat resistance of the antistatic halogen-free flame-retardant reinforced PET / PTT alloy material are excellent, and formability is high. The antistatic halogen-free flame-retardant reinforced PET / PTT alloy material is capable of meeting halogen-free standards.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an antistatic halogen-free flame-retardant reinforced PET / PTT alloy material and a preparation method thereof. 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. PET has the advantages of strong rigidity and good heat resistance, but it is brittle, and because of the slow crystallization speed, molding is difficult, requires high mold temperature and long molding cycle, which limits its application to a certain extent. [0003] Polytrimethylene terephthalate (PTT) is a polyester with excellent performance developed by Shell, which is formed by polycondensation of terephthalic acid (PTA) and 1,3-pro...

AI Technical Summary

Problems solved by technology

[0005] At present, there are very few researches on antistatic halogen-free flame-retardant PET / PTT alloys at home and abroad, mainly staying in ordinary modified PET / PTT alloy materials, and the realization is mainly halogen-free flame-retardant, and does not meet the requirements of halogen-free : Patent CN102382431B discloses an antistatic halogen-free flame-retardant reinforced PET material and its preparation method, but this patent does not involve the alloy system of PET and PTT resin, and there is a common disadvantage of poor molding performance of modified PET materials; Patent CN102757624A discloses a flame retardant reinforced PET / PTT alloy material and its preparation method, but its system belongs to a halogenated flame retardant system, and the product does not have antistatic effect; patent CN102604340A discloses a high glow wire flame retardant reinforced PET / PTT alloy and production process, but its system is also a halogen flame retardant system, and the product also does not have antistatic effect

At present, there is no PET / PTT alloy product that meets the requirements of halogen-free and has antistatic effect on the market.