Fire-insulation flame-retardant polyester material and preparation method thereof

Abstract

The invention provides a fire-insulation flame-retardant polyester material and a preparation method thereof. The material comprises the following components in parts by weight: 33-53 parts of thermoplastic polyester or polyamide, 5-20 parts of thermoplastic special engineering plastic resin, 13-20 parts of a flame retardant, 3-8 parts of a flame retardant synergist 1, 0-5 parts of a flame retardant synergist 2, 10-30 parts of a filler, 0.1-0.8 part of an antioxidant and 0.2-1 part of a lubricant. The method for preparing the polyester material is simple and easy to implement, the characteristics that the polyester/polyamide material and the special engineering plastic are high in melting point, and the glass fibers form a penetrating network to support polymer melt are utilized, and the supporting material cannot collapse in the combustion process to form through holes to be burnt through; and the special engineering plastic has high carbon forming rate, and the flame-retardant synergists are added, so that the carbon forming density can be further improved. The material can form carbon in time in the continuous combustion process of a workpiece made of the material, so that the original workpiece form is maintained, the workpiece is not burnt through, and a fire insulation effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of polymer blending and polymer molding processing, and in particular relates to a flame-resistant flame-retardant polyester material and a preparation method thereof. Background technique [0002] Thermoplastic polyester materials, especially polybutylene terephthalate (PBT) and polyethylene terephthalate (PET), have excellent processability, chemical resistance, high mechanical strength and Good electrical insulation properties. It is widely used in automobiles, electronic appliances and other fields. However, because it is easy to deform and burn through when it is burned at high temperature, even its flame-retardant material cannot play the role of blocking flames, which also greatly limits its use. [0003] In the prior art, the patent document CN107636219A discloses a flame-blocking non-woven fabric, which includes a non-melting fabric with a high-temperature shrinkage rate of 3% or less and a produc...

AI Technical Summary

Problems solved by technology

However, because it is easy to deform and burn through when it is burned at high temperature, even its flame-retardant material cannot play the role of blocking flames, which greatly limits its use.

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