Flame-retardant modified, anti-static and toughened PBT master batch

Abstract

The invention discloses a flame-retardant modified, anti-static and toughened PBT master batch. The master batch comprises the following components by mass: 10%-15% of a PBT carrier, 25%-40% of a halogen-free flame retardant, 10%-30% of micrometer calcium carbonate, 10%-30% of a grafting elastomer, 5%-15% of an antistatic agent, 1%-3% of a lubrication dispersant, 0.5%-2% of a coupling agent, 0.5%-1.5% of an antioxidant and 0.5%-1% of a stabilizing agent. The flame-retardant modified, anti-static and toughened PBT master batch has the beneficial effects that the prepared master batch has the characteristics of high concentration, multifunction, low cost and convenient use; by adopting the grafting elastomer, the master batch has significantly increased toughness and good compatibility; the micrometer calcium carbonate can greatly increase toughness, rigidity and heat resistance and can keep good impact strength; the halogen-free flame retardant has safe, smoke-suppressing, non-toxic and environment-friendly high flame retardant performance; and the anti-static agent make surface resistivity reduce to between 10<8> and 10<10> ohms.cm while guaranteeing the anti-static function.

Description

technical field [0001] The invention relates to a master batch, in particular to a PBT flame-retardant modified antistatic toughened master batch. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline linear saturated polyester resin, which has been widely used in electronic appliances, home appliances, automobile industry, mechanical equipment and other industries. However, pure PBT has disadvantages such as poor notched impact strength, low toughness, flammability, and insufficient antistatic properties. Therefore, PBT should usually be applied after modification. Common modifications include toughening enhancement, flame retardancy, and antistatic properties. sex. Previous studies have shown that elastomers can effectively toughen, but cause a large decrease in strength and stiffness; inorganic fillers can effectively enhance, but often cause a significant decrease in impact toughness; mix elastomers, inorganic fillers with PBT and additives. E...

AI Technical Summary

Problems solved by technology

However, pure PBT has disadvantages such as poor notched impact strength, low toughness, flammability, and insufficient antistatic properties. Therefore, PBT should usually be applied after modification. Common modifications include toughening enhancement, flame retardancy, and antistatic properties. sex

Previous studies have shown that elastomers can effectively toughen, but cause a large decrease in strength and stiffness; inorganic fillers can effectively enhance, but often cause a significant decrease in impact toughness; mix elastomers, inorganic fillers with PBT and additives. Extrusion and granulation have a good modification effect on the strength and toughness of the material. The blending of elastomers and inorganic fillers has become an important and effective means of toughening and strengthening PBT.

However, adding various additives (such as flame retardants, antistatic agents, etc.) During the process, the powder is flying and it is not conducive to clean production. At the same time, it will also lead to cumbersome production process and low efficiency.