Reinforced flame-retardant polyester composite material for baking all-in-one machine shell and preparation method of reinforced flame-retardant polyester composite material

By using materials such as polybutylene terephthalate and poly1,4-cyclohexanedimethyl terephthalate, combined with special graft modified thermoplastic polyester elastomers and flame retardants, an enhanced flame retardant polyester composite material suitable for baking integrated machine shells was prepared, which solved the problems of poor heat resistance of existing materials and the allergicity of flame retardants to the human body, and achieved efficient and safe material performance.

CN119708776AActive Publication Date: 2025-03-28东莞市东翔塑胶有限公司
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Patent Information

Application Number
CN202411904755.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-28
Estimated Expiration
2044-12-23

AI Technical Summary

Technical Problem

The shell materials of existing baking machines have poor heat resistance, easy deformation, high cost, and flame retardant allergies to the human body, making it difficult to meet the requirements of complex structures, low warpage, high temperature and high humidity resistance.

Method used

Polybutylene terephthalate and poly1,4-cyclohexanedimethanol terephthalate are used as the main raw materials, combined with special graft modified thermoplastic polyester elastomers, bromine systems, halogen-free flame retardant, glass fiber and other materials, and enhanced flame retardant polyester composite materials are prepared through the twin screw extrusion mechanism.

Benefits of technology

It realizes high insulation resistance, low dielectric loss, improved thermal deformation temperature, fatigue resistance, hydrolysis resistance, flame retardancy and low shrinkage rate of the material, and is suitable for baking all-in-one shells of complex structures.

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Abstract

The invention relates to the technical field of polyester composite materials, in particular to a reinforced flame-retardant polyester composite material for a baking all-in-one machine shell and a preparation method of the reinforced flame-retardant polyester composite material for the baking all-in-one machine shell. The polybutylene terephthalate and the polybutylene terephthalate cooperate to obtain higher heat deformation temperature, heat resistance and high strength, and the polybutylene terephthalate has better fatigue resistance and dimensional stability and smaller creep deformation; the graft modified thermoplastic polyester elastomer is added, the special thermosensitive hydrophobicity of the graft modified thermoplastic polyester elastomer and the toughening property of the thermoplastic polyester elastomer are utilized, and the graft modified thermoplastic polyester elastomer, the toughening agent and the antioxidant have a synergistic effect, so that the hydrolysis resistance, the high-temperature and high-humidity resistance, the weather resistance, the high-low temperature impact toughness and the low shrinkage rate of the polyester composite material are improved; the added brominated flame retardant and halogen-free flame retardant have a synergistic flame retardant effect, so that the flame retardant requirement of the material can be met; the glass fibers have hydrolysis-resistant and low-warping effects, low shrinkage can promote the structure flatness of the product, and the glass fibers are particularly suitable for producing the baking all-in-one machine shell.
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