Preparation method of conductive polyethylene glycol terephthalate composite material

A technology of ethylene glycol phthalate and composite materials, which is applied in the field of preparation of composite materials, can solve the problems that the in-situ polymerization of polyaniline cannot be guaranteed, the preparation methods are complicated, and the results are unsatisfactory. Effect of enhancing binding force and improving dispersibility

Active Publication Date: 2014-03-26
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the results are not satisfactory. The reason is that emulsion polymerization is not an in-situ polymerization method, and it cannot be guaranteed that polyaniline will always use carbon nanotubes as templates for in-situ polymerization, so as to achieve uniform dispersion of carbon nanotubes. This may be the reason for this patent application. One of the reasons why no relevant data reported in the document
In addition, the preparation method is also complicated, and nitrogen protection is required during the preparation process.

Method used

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  • Preparation method of conductive polyethylene glycol terephthalate composite material
  • Preparation method of conductive polyethylene glycol terephthalate composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1, first mix carbon nanotubes and aniline according to the mass ratio of 0.8: 1.2 and then mix and stir and ultrasonically homogenize for 15min and 14min, then add a co-stabilizer; wherein the co-stabilizer is hexadecane, which is mixed with The mass ratio between anilines is 0.8:30 to obtain a mixture. Then add the mixture to an emulsifier aqueous solution with a concentration of 0.0075mol / L, stir and ultrasonically homogenize for 15min and 14min in turn; wherein, the emulsifier is cetyl sodium sulfate, and the mass ratio between it and the aniline in the mixture is 0.8 : 30, a fine emulsion was obtained.

[0021] Step 2, first add protonic acid aqueous solution to the miniemulsion and then stir for 10 minutes; wherein, the protonic acid is hydrochloric acid with a concentration of 1.5mol / L, and the molar ratio between it and the aniline in the miniemulsion is 0.8:1.2, and the doped liquid. Then, dropwise add an aqueous solution of an oxidizing agent with a conc...

Embodiment 2

[0024] Step 1, first mix carbon nanotubes and aniline according to the ratio of 0.9:1.1 in mass ratio, mix and stir and ultrasonically homogenize for 16min and 13min, then add a co-stabilizer; wherein, the co-stabilizer is hexadecane, which is mixed with The mass ratio between the anilines was 0.9:28, resulting in a mixture. Then add the mixture to an emulsifier aqueous solution with a concentration of 0.0076mol / L and stir and ultrasonically homogenize for 16min and 13min successively; wherein, the emulsifier is cetyl sodium sulfate, and the mass ratio between it and the aniline in the mixture is 0.9 : 28, a fine emulsion was obtained.

[0025] Step 2, first add protonic acid aqueous solution to the miniemulsion and then stir for 11 minutes; wherein, the protonic acid is hydrochloric acid with a concentration of 0.8mol / L, and the molar ratio between it and the aniline in the miniemulsion is 0.9: 1.1, and the doped liquid. Then, dropwise add an aqueous solution of an oxidizin...

Embodiment 3

[0028] Step 1, first mix carbon nanotubes and aniline according to the ratio of mass ratio of 1:1, mix and stir and ultrasonically homogenize for 17min and 12min, then add a co-stabilizer; wherein, the co-stabilizer is hexadecane, which is mixed with The mass ratio between anilines is 1:25 to obtain a mixture. Then add the mixture to the emulsifier aqueous solution with a concentration of 0.0077mol / L and stir and ultrasonically homogenize for 17min and 12min successively; wherein, the emulsifier is cetyl sodium sulfate, and the mass ratio between it and the aniline in the mixture is 1 : 25, a fine emulsion was obtained.

[0029] Step 2, first add protonic acid aqueous solution to the miniemulsion and then stir for 12 minutes; wherein, the protonic acid is hydrochloric acid with a concentration of 1mol / L, and the molar ratio between it and aniline in the miniemulsion is 1:1 to obtain the doping solution . Then, dropwise add an aqueous solution of an oxidizing agent with a con...

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Abstract

The invention discloses a preparation method of a conductive polyethylene glycol terephthalate composite material, comprising the following steps of: firstly sequentially mixing carbon nano tubes and phenylamine, stirring and ultrasonically homogenizing, then adding a co-stablizer to obtain a mixture, and then adding the mixture to an aqueous emulsifier solution, sequentially stirring and ultrasonically homogenizing to obtain a miniemulsion; then firstly adding an aqueous protonic acid solution to the miniemulsion, and then stirring to obtain a doped solution, then dripping an aqueous oxidant solution to the doped solution and reacting for at least 4 hours to obtain an intermediate product; then firstly carrying out centrifugalizing, washing and drying treatment on the intermediate product to obtain modified conductive carbon nano tube powder, and then melting and mixing the modified conductive carbon nano tube powder and polyethylene glycol terephthalate to prepare the conductive polyethylene glycol terephthalate composite material containing the polyethylene glycol terephthalate, polyaniline and the carbon nano tubes. The target product prepared by the method has good dispersity of the carbon nano tubes, high compatibility with a base body and wide conductivity regulating range.

Description

technical field [0001] The invention relates to a preparation method of a composite material, in particular to a preparation method of a conductive polyethylene terephthalate composite material. Background technique [0002] Polyethylene terephthalate (PET) has been widely used in fiber, packaging, engineering plastics and other fields due to its advantages of high strength, durable deformation, wear resistance and heat resistance, and good gas barrier performance. Become one of the pillar industries of the national economy. However, the main chain of PET is mainly bound by covalent bonds and has few polar groups. It is easy to generate and accumulate static charges during contact and friction, which brings a lot of trouble to the processing and application of PET: making PET products easy to absorb dust , affect the appearance; when processing PET film with a large surface area, the force generated by electrostatic charge hinders the winding of the film; when PET is used i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L79/02C08K7/00C08K3/04C08K5/01C08K5/05C08G73/02
Inventor 王化王若溪王磊田兴友郑康胡坤
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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