Flame-retardant PET (polyethylene terephthalate)/nanocarbon microsphere composite material and preparation method thereof

A technology of nano-carbon microspheres and composite materials, which is applied in the field of preparation of flame-retardant PET/nano-carbon microsphere composite materials, which can solve the problems of poor compatibility of polymer materials and low combustion performance, and achieve improved flame-retardant properties , maintain mechanical properties, improve the effect of uniform dispersion

Inactive Publication Date: 2018-04-20
JIANGSU YUXING FILM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: the traditional combustion performance of nano-carbon microspheres is relatively inefficient and has the disadvantages of poor compatibility with polymer materials

Method used

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  • Flame-retardant PET (polyethylene terephthalate)/nanocarbon microsphere composite material and preparation method thereof
  • Flame-retardant PET (polyethylene terephthalate)/nanocarbon microsphere composite material and preparation method thereof
  • Flame-retardant PET (polyethylene terephthalate)/nanocarbon microsphere composite material and preparation method thereof

Examples

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Embodiment 1

[0041] Add 0.5mol / L cyclodextrin solution into the Erlenmeyer flask, then heat it in a water bath until it is completely dissolved, quickly add it to the hydrothermal synthesis kettle, and react at 160°C for 10h. After the reaction is completed, put the carbon microspheres into put into a centrifuge tube, wash with ethanol, and disperse in an ultrasonic disperser, then place the dispersed carbon microspheres in an ultracentrifuge for centrifugation, repeat the above washing, disperse, and finally place them in a constant temperature drying oven at 80°C to dry overnight . Carbon microspheres with a smaller average particle size were prepared, and the average particle size was 420nm.

[0042] Then use a 250W low-temperature plasma device to discharge for 5 minutes to generate hydroxyl and carboxyl groups on the surface of the carbon microspheres;

[0043] React guanidine carbonate and concentrated phosphoric acid with a molar ratio of 1:1-1.25 at 65°C for 2 hours to obtain guan...

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Abstract

The invention relates to the field of flame-retardant polymer composite materials and preparation thereof, and in particular to a functionalized nanocarbon microsphere blending modified polyethylene terephthalate (PET) and a preparation method thereof. Nanocarbon microsphere flame retardant is first treated by low-temperature plasma, so that hydroxyl groups and carboxyl groups are generated on thesurface, phosphor-nitrogen flame retardant is grafted onto the surfaces of the nanocarbon microspheres, and the surface is then wrapped by a layer of PET by in-situ polymerization, so that a nanocarbon microsphere flame retardant which is highly compatible with the base material PET is prepared. PET and the prepared nanocarbon microsphere flame retardant are melted to be blended and molded by injection, and thereby the PET/functionalized nanocarbon microsphere composite material is prepared. The flame-retardant property of the PET/functionalized nanocarbon microsphere composite material prepared according to the invention is excellent, the heat resistance is increased, moreover, the tensile strength is also improved to a certain degree, and the defects of phosphor-nitrogen intumescent flame retardants, i.e. poor durability and poor compatibility between carbon microspheres and base material PET, are overcome.

Description

technical field [0001] The invention relates to the field of flame-retardant polymer composite materials and their preparation, in particular to a preparation method of flame-retardant PET / nano-carbon microsphere composite materials Background technique [0002] Polyethylene terephthalate (abbreviated as PET in English) is a thermoplastic resin with excellent optical properties, abrasion resistance, dimensional stability and electrical insulation. It is the most widely used in the 21st century. A synthetic polymer material with the largest consumption and low price, it is widely used in many fields. However, the flame retardancy of PET is poor. When burning, the heated part first undergoes thermal melting, and then burns. The burning process is accompanied by serious melting dripping, and the molten droplets away from the fire are accompanied by the flame, which can easily cause the surrounding combustibles to burn. Ignited, resulting in secondary combustion, it is very eas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/78C08K13/06C08K9/04C08K9/00C08K7/18C08K3/22
CPCC08G63/183C08G63/78C08K3/2279C08K7/18C08K9/00C08K9/04C08K13/06C08K2201/003C08K2201/011
Inventor 蒙钊蒋姗胡婧查单丁永红
Owner JIANGSU YUXING FILM TECH
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