Polyethylene terephthalate-1, 4-cyclohexanedimethanol ester double-base synergistic flame-retardant composite material and preparation method thereof

A technology of polyethylene terephthalate and cyclohexanedimethanol is applied in the field of polyethylene terephthalate-1,4-cyclohexanedimethanol composite materials, and can solve the problem of polymer The mechanical and mechanical properties of the matrix or reinforcement material are decreased, and the compatibility is poor, so as to achieve the effects of excellent interfacial compatibility, strong thermal insulation and oxygen barrier ability, and strong carbon-forming ability.

Inactive Publication Date: 2020-05-29
KANGMINGYUAN GUIZHOU SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, DOPO flame retardants also have their shortcomings. The compatibility between this type of flame retardant and the polymer matrix or reinforcement material is poor, so that when this type of flame retardant is used, it will cause the mechanical properties of the polymer matrix or reinforcement material. Performance drop

Method used

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  • Polyethylene terephthalate-1, 4-cyclohexanedimethanol ester double-base synergistic flame-retardant composite material and preparation method thereof
  • Polyethylene terephthalate-1, 4-cyclohexanedimethanol ester double-base synergistic flame-retardant composite material and preparation method thereof
  • Polyethylene terephthalate-1, 4-cyclohexanedimethanol ester double-base synergistic flame-retardant composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing a polyethylene terephthalate-1,4-cyclohexanedimethanol double-base synergistic flame-retardant composite material, comprising the following steps:

[0031] S1. Add 90kg of polyethylene terephthalate-1,4-cyclohexanedimethanol, 2.5kg of reactive phosphaphenanthrene, 2.5kg of reactive polyphosphazene, and 5kg of ethylene-acrylic acid butyl Ester-glycidyl methacrylate terpolymer and 0.5 kg of bis(2,4-dicumylphenyl)pentaerythritol diphosphite were dried at 80° C. and mixed to obtain a mixture. Drying time is 1-4h, dry to no obvious moisture;

[0032] S2. The mixture in step S1 is blended and extruded through a twin-screw extruder at 215-245° C., and then cooled to room temperature, followed by traction and pelletizing to obtain polylactic acid, phosphaphenanthrene and polyphosphorus Nitrile double base synergistic flame retardant composite material.

[0033] The structure of the reactive type phosphaphenanthrene is as follows:

[0034]

Embodiment 2

[0036] The difference from Example 1 is that in step S1, 2 kg of the gas phase flame retardant is used, and 2 kg of the condensed phase flame retardant is used.

Embodiment 3

[0052] A method for preparing a polyethylene terephthalate-1,4-cyclohexanedimethanol double-base synergistic flame-retardant composite material, comprising the following steps:

[0053] S1, 80kg of polyethylene terephthalate-1,4-cyclohexanedimethanol, 2kg of reactive phosphaphenanthrene, 2kg of reactive polyphosphazene, 5kg of polyethylene grafted methyl Glycidyl acrylate and 0.5 kg of bis(2,4-dicumylphenyl)pentaerythritol diphosphite were dried at 75° C. and mixed to obtain a mixture. Drying time is 1-4h, dry to no obvious moisture;

[0054] S2. The mixture in step S1 is blended and extruded through a twin-screw extruder at 215-245° C., and then cooled to room temperature, followed by traction and pelletizing to obtain polylactic acid, phosphaphenanthrene and polyphosphorus Nitrile double base synergistic flame retardant composite material.

[0055] The structure of the reactive type phosphaphenanthrene is as follows:

[0056]

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Abstract

The invention discloses a polyethylene terephthalate-1, 4-cyclohexanedimethanol ester double-base synergistic flame-retardant composite material and a preparation method thereof. The polyethylene terephthalate-1, 4-cyclohexanedimethanol ester double-base synergistic flame-retardant composite material is prepared from, by mass, 80-95 parts of polyethylene terephthalate-1, 4-cyclohexanedimethanol ester, 2-5 parts of gas-phase flame retardants, 2-5 parts of a condensed-phase flame retardant, 5-10 parts of a compatibilizer and 0.5 parts of an antioxidant. The method comprises the following steps:S1, drying raw materials at 75-85 DEG C, and uniformly mixing to obtain a mixture; and S2, carrying out blending extrusion processing on the mixture obtained in the step S1 through a double-screw extruder at 215-245 DEG C, performing cooling to room temperature, and sequentially carrying out traction and dicing to obtain the polyethylene terephthalate-1, 4-cyclohexanedimethanol ester composite material. The modified polyethylene terephthalate-1, 4-cyclohexanedimethanol ester material disclosed by the invention is good in flame retardant property, the flame retardant is good in compatibility with a matrix, and the polyethylene terephthalate-1, 4-cyclohexanedimethanol ester material is good in mechanical property; and moreover, the preparation method is simple.

Description

technical field [0001] The invention belongs to the field of polyethylene terephthalate-1,4-cyclohexanedimethanol composite materials, and specifically relates to a synergistic flame-retardant polyethylene terephthalate with a double base of phosphaphenanthrene and polyphosphazene Ethylene glycol ester-1,4-cyclohexanedimethanol ester composite material and its preparation method. Background technique [0002] Polyethylene terephthalate-1,4-cyclohexanedimethanol (abbreviated as PETG) is composed of terephthalic acid (PTA) and ethylene glycol (EG), 1,4-cyclohexane The polycondensation product of methanol (CHDM) three monomers is widely used in the markets of plates, sheets, high-performance shrink films, bottles and profiled materials, while polyethylene terephthalate-1,4-ring Hexane dimethanol ester is easy to burn, and there is a droplet phenomenon when burning. Halogen-containing flame retardants are applied to polyethylene terephthalate-1,4-cyclohexanedimethanol resin, m...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L85/02C08L23/08C08L51/06C08L51/00C08K5/5397C08K5/5398C08K5/526
CPCC08L67/02C08L2201/02C08L2205/03C08L2205/08C08L2312/00C08L85/02C08L23/0884C08K5/5397C08K5/526C08L51/06C08K5/5398C08L51/003
Inventor 王华周成立
Owner KANGMINGYUAN GUIZHOU SCI & TECH DEV CO LTD
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