High-GWIT high-CTI thin-wall flame-retardant glass-fiber reinforced low-warpage PET composite material and preparation method thereof

Abstract

The invention discloses a high-glow-wire ignition temperature (GWIT) high-comparative tracking index (CTI) thin-wall flame-retardant glass-fiber reinforced low-warpage polyethylene terephthalate (PET)composite material and a preparation method thereof. The high-GWIT high-CTI thin-wall flame-retardant glass-fiber reinforced low-warpage PET material comprises the following raw materials in parts byweight: 40-60 parts of PET, 3-8 parts of a compatilizer, 3-8 parts of a flame-retardant synergist, 10-20 parts of a halogen-containing flame retardant, 3-8 parts of a glow-wire reinforcing agent, 3-8parts of a CTI enhancer, 0.1-0.3 part of an antioxidant, 0.1-0.3 part of a nucleating agent, 5-10 parts of a mineral filler and 10-30 parts of glass fibers. According to the high-GWIT high-CTI flame-retardant glass-fiber reinforced low-warpage PET composite material, the GWIT of and the CTI of a glowing filament of the material are notably improved in the premise of not influencing the mechanicalproperties of the material and meeting the flame retardance; and with the addition of the nucleating agent and the mineral filler, the warping problem of a product is solved, the molding cycle of theproduct is reduced, and the formula cost is also reduced.

Description

technical field [0001] The invention relates to a high-GWIT, high-CTI, thin-wall flame-retardant glass fiber-reinforced low-warp PET composite material and a preparation method thereof, belonging to the field of PET composite materials. Background technique [0002] PET material is polyethylene terephthalate, which is a linear thermoplastic polymer. It was first industrially produced by DuPont in 1953. It is a crystalline polymer with a high melting temperature and a high glass transition temperature. . It can maintain good physical properties in a wide temperature range, and its fatigue resistance, friction resistance, aging resistance, insulation resistance are outstanding, while solvent resistance and acid resistance are stable, so it is widely used. The modified products can be applied to capacitor casings, low-voltage electrical appliance casings, connectors and transformer skeletons, etc. With the wide application of PET products in the electronic and electrical indu...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects in the prior art that the GWIT and CTI of flame-retardant glass fiber reinforced PET cannot be taken into account at the same time and the product warpage occurs, the present invention provides a high GWIT and high CTI thin-walled flame-retardant glass fiber reinforced low warpage PET composite material and its Preparation

Images