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A kind of modified carbon nanotube flame retardant reinforced polyester composite material and preparation method thereof

A technology of polyester composite materials and nanotubes, which is applied in the field of nanomaterials and plastic processing, can solve the problems of difficult uniform dispersion of carbon nanotubes, achieve broad market application prospects, simple preparation process, and the effect of inhibiting thermal decomposition and combustion

Active Publication Date: 2017-11-14
SUZHOU HSM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to overcome defects such as carbon nanotubes that exist in the preparation of existing polymer materials that are difficult to uniformly disperse in polymer materials, and provide a method for improving the interfacial compatibility of carbon nanotubes and polyester materials, Modified carbon nanotube flame retardant reinforced polyester composite material by improving the dispersion of carbon nanotubes in the polyester matrix, thereby improving the flame retardancy and mechanical properties of the composite material

Method used

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  • A kind of modified carbon nanotube flame retardant reinforced polyester composite material and preparation method thereof
  • A kind of modified carbon nanotube flame retardant reinforced polyester composite material and preparation method thereof
  • A kind of modified carbon nanotube flame retardant reinforced polyester composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Place 0.2 g of aminated multi-walled carbon nanotubes, 1.4 g of triethylamine and 50 ml of N,N-dimethylformamide in a three-necked flask, and add 3.0 g of diphenyl Phosphinoyl chloride, after the dropwise addition, continue to react for 2 hours under ice bath and nitrogen conditions, then raise the temperature to 80°C, and react under nitrogen conditions for 24 hours, and finally filter, wash and dry the obtained product to obtain a black solid that is organic Phosphine modified carbon nanotubes.

[0030] From figure 1 It can be clearly seen that the organophosphine-modified carbon nanotubes prepared by the present invention have better dispersibility in organic solvents.

[0031] From figure 2 It can be seen from the spectrum that the most significant difference between the two is that the organic phosphine modified carbon nanotube (DPPA-MWCNT) is at 1077cm -1 A strong and broad absorption peak appeared at , which corresponds to the stretching vibration absorption ...

Embodiment 2

[0034] 0.2 g of aminated single-walled carbon nanotubes, 0.7 g of pyridine and 50 ml of tetrahydrofuran were placed in a three-necked flask, and 2.0 g of diphenylphosphinic chloride was added dropwise under ice bath and nitrogen conditions. Bath and nitrogen conditions continue to react for 1 hour, then heat up to 70 ° C, react under nitrogen conditions for 12 hours, and finally filter, wash, and dry the resulting product to obtain a black solid that is approximately figure 1 photo, figure 2 and 3 Organophosphine-modified carbon nanotubes shown in the curve.

Embodiment 3

[0036] Place 0.2 g of aminated single-walled carbon nanotubes, 1.4 g of pyridine, and 50 ml of N,N-dimethylformamide into a three-necked flask, and add 4.0 g of diphenylphosphine dropwise under ice bath and nitrogen conditions Acyl chloride, after the dropwise addition, the reaction was continued for 3 hours in an ice bath and nitrogen, then the temperature was raised to 90°C, and the reaction was carried out in nitrogen for 36 hours. Finally, the resulting product was filtered, washed, and dried to obtain a black solid that was approximately figure 1 photo, figure 2 and 3 Organophosphine-modified carbon nanotubes shown in the curve.

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Abstract

The invention belongs to the technical field of nanomaterials and plastic processing, and in particular relates to a modified carbon nanotube flame-retardant reinforced polyester composite material and a preparation method thereof. The raw materials for its preparation include at least 31.5-99.4wt% of polyester, 0.1-2wt% of modified carbon nanotubes and 0.5-5wt% of compatibilizers. The molecular structure of the modified carbon nanotubes is: In the formula, R is B base or phenyl. The raw materials are mixed evenly, heated to 220-265°C, melted and blended, then extruded, drawn, cooled, pelletized and dried. The use of modified carbon nanotubes can reduce the agglomeration effect of carbon nanotubes, improve the interfacial compatibility between carbon nanotubes and polyester materials, and improve the dispersion of carbon nanotubes in the polyester matrix, thereby improving the flame retardancy and durability of composite materials. mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and plastic processing, and in particular relates to a modified carbon nanotube flame-retardant reinforced polyester composite material and a preparation method thereof. Background technique [0002] Polyester is a general term for polymer compounds formed by polycondensation of diols or polyols and dibasic acids or polybasic acids, among which polyethylene terephthalate (PET) and polybutylene terephthalate ( PBT) are the two most widely used polymer materials in the polyester family. With the continuous development and needs of industrial production, polymer material modified products occupy an increasingly important position in the polymer material industry. The reinforcing material physically filled with inorganic substances in the modification of polymer materials has higher tensile strength, dimensional stability, heat resistance and better electrical properties. Therefore, modified p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L67/00C08L51/06C08L51/04C08L51/00C08K13/06C08K9/04C08K7/24C08K7/14C08K3/32C08K5/3492C08K5/372
Inventor 杨伟张强鲁红典杨本宏
Owner SUZHOU HSM TECH CO LTD
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