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Environment-friendly plastic flame retardant, preparation method and application of environment-friendly plastic flame retardant in plastic

A technology for environmentally friendly plastics and flame retardants, applied in the field of preparation and flame retardants for environmentally friendly plastics, can solve the problems of poor thermal stability, large filling amount, poor resin compatibility, etc., to prevent the escape of combustible gases, inhibit the The effect of decomposing combustion and isolating thermal oxygen erosion

Inactive Publication Date: 2020-08-11
肖艳芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, phosphorus-based flame retardants also have disadvantages such as high volatility, poor thermal stability, and poor compatibility with resins.
In addition, plastic flame retardants are often added in a large amount, which further affects the fluidity, processability and other physical and chemical properties of the resin.

Method used

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  • Environment-friendly plastic flame retardant, preparation method and application of environment-friendly plastic flame retardant in plastic
  • Environment-friendly plastic flame retardant, preparation method and application of environment-friendly plastic flame retardant in plastic
  • Environment-friendly plastic flame retardant, preparation method and application of environment-friendly plastic flame retardant in plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A flame-retardant PET resin, consisting of the following raw materials: terephthalic acid, ethylene glycol, a catalyst, and a flame retardant;

[0058] The mol ratio of described terephthalic acid and ethylene glycol is 1:1.15;

[0059] The mass ratio of described catalyzer and terephthalic acid is 1.37:5000, and described catalyzer is ethylene glycol antimony;

[0060] The mass ratio of described terephthalic acid and flame retardant is 8.5:1;

[0061] The flame retardant is ammonium polyphosphate.

[0062] The above-mentioned flame-retardant PET resin is prepared by the following method:

[0063] Y1 esterification stage: Add terephthalic acid, ethylene glycol, catalyst, and flame retardant into the reactor for mixing, inject nitrogen into the reactor, turn on the circulating water, and carry out the esterification reaction. The esterification temperature is controlled at 252°C. The reaction pressure is 0.15MPa, the rotation speed of the stirring paddle is 35r / min, ...

Embodiment 2

[0067] A flame-retardant PET resin, consisting of the following raw materials: terephthalic acid, ethylene glycol, a catalyst, and a flame retardant;

[0068] The mol ratio of described terephthalic acid and ethylene glycol is 1:1.15;

[0069] The mass ratio of described catalyzer and terephthalic acid is 1.37:5000, and described catalyzer is ethylene glycol antimony;

[0070] The mass ratio of described terephthalic acid and flame retardant is 8.5:1;

[0071] The flame retardant is a core-shell composite phosphorus flame retardant.

[0072] The above-mentioned core-shell composite phosphorus flame retardant is prepared by the following method:

[0073] The phosphorus-based flame retardant was added to deionized water and stirred for 20min at a stirring rate of 120rpm. The mass ratio of the phosphorus-based flame retardant to deionized water was 20:400 to obtain dispersion A; the chitosan solution was added at 2mL / The rate of min was added to the dispersion A and stirred f...

Embodiment 3

[0082] A flame-retardant PET resin, consisting of the following raw materials: terephthalic acid, ethylene glycol, a catalyst, and a flame retardant;

[0083] The mol ratio of described terephthalic acid and ethylene glycol is 1:1.15;

[0084] The mass ratio of described catalyzer and terephthalic acid is 1.37:5000, and described catalyzer is ethylene glycol antimony;

[0085] The mass ratio of described terephthalic acid and flame retardant is 8.5:1;

[0086] The flame retardant is a core-shell composite phosphorus flame retardant.

[0087] The above-mentioned core-shell composite phosphorus flame retardant is prepared by the following method:

[0088] The phosphorus-based flame retardant was added to deionized water and stirred for 20min at a stirring rate of 120rpm. The mass ratio of the phosphorus-based flame retardant to deionized water was 20:400 to obtain dispersion A; the chitosan solution was added at 2mL / The rate of min was added to the dispersion A and stirred f...

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Abstract

The invention discloses an environment-friendly plastic flame retardant, a preparation method and application of the environment-friendly plastic flame retardant in plastics, and the preparation method of the environment-friendly plastic flame retardant comprises the following steps: step 1, mixing a phosphorus-based flame retardant with water to obtain a dispersion liquid A; 2, mixing a chitosansolution with the dispersion liquid A, centrifuging, filtering, washing, adding water, and mixing to obtain a dispersion liquid B; and 3, mixing an alginic acid solution with the dispersion liquid B,centrifuging, filtering, washing, carrying out vacuum drying, and grinding into powder. In an aqueous solution system, a phosphorus-based flame retardant is used as a core, and chitosan and alginic acid are self-assembled on the phosphorus-based flame retardant to form a shell to obtain the environment-friendly plastic flame retardant. According to the invention, combustible gas can be effectivelyprevented from escaping, thermal oxygen erosion of plastics, especially PET, is effectively isolated, decomposition and combustion of the plastics are inhibited, and the flame retardant property is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an environment-friendly plastic flame retardant, a preparation method and its application in plastics. Background technique [0002] Most plastics are flammable. With the wide application of plastics in construction, furniture, transportation, aviation, aerospace, electrical appliances, etc., improving the flame retardancy of plastics has become a very urgent issue. Adding plastic flame retardants to plastics has become a mainstream choice. [0003] Plastic flame retardants mainly include halogen flame retardants, phosphorus flame retardants and other flame retardants. [0004] Halogenated flame retardants are the earliest flame retardants for resins. However, when they are burned, they will produce corrosive gases such as hydrogen halides and polybrominated dibenzofurans, which seriously damage human health. [0005] Phosphorus is one of the most effecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K3/32C08K5/523C08K5/5333C08K5/5313C08G63/183C08G63/78C08L67/02
CPCC08G63/183C08G63/78C08K3/32C08K5/523C08K5/5313C08K5/5333C08K9/10C08K2003/323C08L67/02C08L2201/02
Inventor 肖艳芳
Owner 肖艳芳