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Method for preparing antistatic nano composite slurry

A nano-composite and anti-static technology, applied in the field of PET materials, can solve the problems that the anti-static agent coating is easy to fall off, the color selection of PET products is limited, and the PET resistivity is high.

Inactive Publication Date: 2010-12-29
HEFEI KAIER NANOMETER ENERGY & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The chemical formula of polyethylene terephthalate is -[OCH2-CH2OCOC6H4CO]-, the English name is polyethylene terephthalate, referred to as PET, and it is a high polymer. Polyethylene terephthalate has high strength, good wear resistance, Good resilience, low cost and other characteristics, so it occupies a considerable proportion in textile varieties. At the same time, PET is an engineering plastic with excellent performance and wide application. However, due to the high resistivity of PET, under the conditions of 65% relative humidity and 25 °C, The moisture absorption rate is only 0.4%, the resistivity is as high as 1014Ω·cm, and it is easy to generate static electricity, which limits its use in many fields
[0003] Antistatic PET is PET with antistatic ability. Generally, the resistivity of PET is reduced by adding antistatic agent, so that it can effectively dissipate static charge and avoid the harm caused by the accumulation of static electricity. The preparation methods of electrostatic PET materials are mainly surface coating method and internal addition method. The surface coating method refers to the surface coating of PET resin products. Most of the antistatic agents used are surfactants compatible with PET. , the coating adheres to the surface of the product, but the antistatic agent coating of the PET material obtained by this method is easy to fall off, and the antistatic performance is difficult to last
The internal addition method refers to adding charge-dissipating substances such as carbon black, oxide semiconductors, and metal powders to the matrix polymer through blending and extruding to make antistatic plastic products or spinning to obtain antistatic fabrics. These methods can obtain antistatic Antistatic products with durable performance, but most of the antistatic agents used in these methods are darker in color, which has a greater impact on the color of PTE materials in actual use, thus limiting the color selection of PET products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] a. According to the mass ratio, the silane coupling agent KH550: n-octyl ammonium: nano-silicon nitride = 1: 1: 4.9 is dissolved in the nano-petroleum ether solvent and reacted for 0.5 hours, the reaction temperature is 90 ° C, and then distilled to remove petroleum ether , and the reaction resultant was vacuum-dried at a temperature of 130° C. for 2 hours;

[0019] b. Mix the above-mentioned dry product according to the mass ratio: ethylene: propylene: ethylene glycol=11:1:1:30, and put the mixture into a high-pressure pulverizer with a pressure of 230Mpa to disperse to obtain a nanocomposite slurry;

[0020] According to the mass ratio, the nano-composite slurry obtained above: ethylene glycol = 1: 1000 was stirred and mixed at room temperature, and the antistatic PET material was obtained through esterification reaction.

Embodiment 2

[0022] a. According to the mass ratio, the silane coupling agent KH550: methyl n-octylamine: nano-silicon nitride = 1: 1: 5.1 was dissolved in the nano-n-hexane solvent and reacted for 1.5 hours. n-hexane solvent, and the reaction resultant was vacuum-dried at a temperature of 150° C. for 1 hour;

[0023] b. Mix the above-mentioned dry product according to the mass ratio: ethylene: propylene: ethylene glycol=9:1:1:30, and put the mixture into a high-pressure pulverizer with a pressure of 150Mpa to disperse to obtain a nanocomposite slurry;

[0024] According to the mass ratio, the nanocomposite slurry obtained above: ethylene glycol = 2: 1000 was stirred and mixed at room temperature, and the antistatic PET material was obtained through esterification reaction.

Embodiment 3

[0026] a. According to the mass ratio, the silane coupling agent KH550: n-octyl ammonium: nano-silicon nitride = 1: 1: 5 is dissolved in the nano-petroleum ether solvent and reacted for 1 hour, the reaction temperature is 60 ° C, and then distilled to remove petroleum ether solvent, and the reaction resultant was vacuum-dried at a temperature of 140° C. for 1.5 hours;

[0027] b. Mix the above-mentioned dry product according to the mass ratio: ethylene: propylene: ethylene glycol=10:1:1:30, and put the mixture into a high-pressure pulverizer with a pressure of 200Mpa to disperse to obtain a nanocomposite slurry;

[0028] According to the mass ratio, the nanocomposite slurry obtained above: ethylene glycol = 5: 1000 was stirred and mixed at room temperature, and the antistatic PET material was obtained through esterification reaction.

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Abstract

The invention belongs to the technical field of PET materials, and particularly relates to a method for preparing antistatic nano composite slurry and application thereof. The method for preparing the antistatic nano composite slurry comprises the following steps of: dissolving silane coupling agent, dispersant and nano silicon nitride in a mass ratio of 1:1:4.9-5.1 into nano petroleum ether or n-hexane solvent, reacting the mixture at the temperature of between 60 and 90 DEG C, then distilling the reaction product, and drying the distilled reaction product; and mixing the dried product, ethylene, propylene and ethylene glycol in a mass ratio of 9-11:1:1:30, putting the mixture into a high-pressure crusher and dispersing the mixture to obtain the antistatic nano composite slurry. The preparation method is simple and convenient; and the antistatic nano composite slurry obtained by the method, applied in a PET material, has permanent antistatic performance and has no influence on the color of the PET material.

Description

technical field [0001] The invention belongs to the technical field of PET materials, and in particular relates to a preparation method of antistatic PET nanocomposite slurry. Background technique [0002] The chemical formula of polyethylene terephthalate is -[OCH2-CH2OCOC6H4CO]-, the English name is polyethylene terephthalate, referred to as PET, and it is a high polymer. Polyethylene terephthalate has high strength, good wear resistance, Good resilience, low cost and other characteristics, so it occupies a considerable proportion in textile varieties. At the same time, PET is an engineering plastic with excellent performance and wide application. However, due to the high resistivity of PET, under the conditions of 65% relative humidity and 25 °C, The moisture absorption rate is only 0.4%, and the resistivity is as high as 1014Ω·cm. It is easy to generate static electricity, which limits its use in many fields. [0003] Antistatic PET is PET with antistatic ability. Gener...

Claims

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Application Information

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IPC IPC(8): C08K13/06C08K9/06C08K9/04C08K3/34C09C1/28C09C3/12C09C3/08C08L67/02C08G63/183
Inventor 张芬红
Owner HEFEI KAIER NANOMETER ENERGY & TECH
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