Environment-friendly flame-retardant transparent polyester material

Abstract

The invention relates to an environment-friendly flame-retardant transparent polyester material, which is prepared from the following components in percentage by mass: 70 to 95 % of polyester resin, 4 to 30 % of DOPO derivative and 0.2 to 2 % of an antioxidant. The totaling is 100%. According to the environment-friendly flame-retardant transparent polyester material, the DOPO derivative is used, so that the synthesized flame retardant is halogen-free, smoke-free, non-toxic, free of migration and lasting in flame retardant property, and can be used for flame retardant treatment of various high polymer materials such as linear polyester, polyamide, epoxy resin and polyurethane.

Description

technical field [0001] The invention relates to the technical field of flame-retardant modification of engineering plastics, in particular to an environment-friendly flame-retardant transparent polyester material. Background technique [0002] Engineering plastics are widely used in electronics, automobiles, construction, office equipment, machinery, aerospace and other industries due to their excellent comprehensive properties, good mechanical properties, dimensional stability, heat resistance and electrical insulation. In engineering plastics, there is a class of transparent polyester materials comparable to glass, such as polycarbonate (PC), polymethyl methacrylate (PMMA, acrylic), polyethylene terephthalate (PET), etc. It has the basic properties of engineering plastics and has a light transmittance of about 90%. It can be used to prepare transparent sheets or films, and can be used in building materials, packaging, electronic appliances, automobiles, optical glass, pane...

AI Technical Summary

Problems solved by technology

However, the existing halogen-free flame retardants have problems such as low flame retardant efficiency, large addition amount, and great influence on the performance of the material, especially in transparent polyester materials, which will seriously reduce the light transmittance of the material, so the development of a Flame-retardant transparent polyester materials with excellent comprehensive properties need to start with the development of new and efficient halogen-free flame retardants

[0004] Patent CN103467932A discloses a transparent flame retardant PET masterbatch, the flame retardants used are antimony trioxide and decabromodiphenylethane, but the flame retardant materials added with these halogen flame retardants are used in some flame retardant fields Restricted, and the addition of heavy metal antimony may also lead to some potential safety hazards, so it is not a green and environmentally friendly flame retardant material

Patent CN108467574A discloses a transparent flame-retardant PET masterbatch and its film. It uses infusible flame-retardant microspheres with a core-shell structure. The manufacturing process requires nano-processing and electrostatic spraying. The manufacturing process is complicated and the quality reproducibility is poor. Great impact on polyester transparency, not suitable for large-scale industrial production and commercial promotion

Patent CN109575324A discloses the use of chemical modification to introduce reactive organic flame retardant monomers into the main chain of PET polymers, but the product structure cannot be adjusted, the synthesis process is complicated, and the flame retardant efficiency is not high

CN102634064B discloses the influence of DOPO derivatives of oxazoline structure on the flame retardancy and light transmittance of PET films, but the synthetic purity of the derivatives is not high, the manufacturing cost is expensive, and it is connected with PET end groups by reaction, so it is not suitable for Transparent polyester materials such as PC and PMMA

CN102532816B discloses the use of phosphorus-containing flame retardants to promote PC to form a carbon layer under the action of sulfonate, but this system is only applicable to polyester containing PC, and the scope of applicable systems is narrow

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