A kind of 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, which comprises the following components by weight percentage: 25.5-40% of PET resin, 10-25% of PTT resin, and 10% of halogen-free flame retardant compound ~25%, glass fiber 10~40%, compound antistatic agent 2~5%, compatibilizer 1~8%, processing aid 0.5~1.5%; its preparation steps include: 1) Compound antistatic agent, phase Put the compatibilizer and processing aid into the high-speed mixer and dry-mix for 2-4 minutes at a speed of 700-900 rpm; 2) Put the halogen-free flame retardant compound into the high-speed mixer and dry-mix for 2-4 minutes, The rotation speed is 600-800 rpm; 3) The mixture obtained in step 1), the mixture obtained in step 2), PET resin, PTT resin, and glass fiber are respectively fed into the twin-screw extruder through the feeder for mixing, dispersing, Melt extrusion and granulation; the PET / PTT alloy material prepared by the present invention has excellent antistatic effect, excellent comprehensive performance and heat resistance, is halogen-free, and has good molding performance.

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.