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Nanometer antimony-doped stannic oxide antistatic coating and method for making same

A tin dioxide and antistatic technology, applied in polyamide coatings, coatings and other directions, can solve the problems of poor conductivity, difficult to uniformly disperse, and the direct application of ATO cannot be realized, and achieves a convenient and easy preparation method and application prospects. The effect of considerable and obvious economic value

Inactive Publication Date: 2006-12-27
SHANGHAI HUAMING HI TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current nano-ATO has not been surface-modified, so when it is used in organic polymer coatings, the ATO is severely agglomerated and difficult to disperse evenly. Direct application has not been possible so far

Method used

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  • Nanometer antimony-doped stannic oxide antistatic coating and method for making same
  • Nanometer antimony-doped stannic oxide antistatic coating and method for making same
  • Nanometer antimony-doped stannic oxide antistatic coating and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Add 2.00 g of nano antimony-doped tin dioxide (brand name: ESN-185, spherical), 3.14 g of polyamide resin / isopropanol solution with a mass concentration of 30%, and 2.21 g of isopropanol into a ball mill jar for ball milling. 225rpm, ball milling time 7h. The slurry after ball milling is taken out to obtain the antistatic coating of nano antimony-doped tin dioxide.

[0044] Dilute the above paint with isopropanol, and coat it on the surface of polyethylene film, and measure the surface resistivity of the coating with a ZC-46A megger to be 4.7×10 7 Ω / sq; the paint diluted with isopropanol was observed and photographed with a transmission electron microscope (JEM-1200EXII) from Japan JEOL Company, and the dispersion state of nano antimony-doped tin dioxide in the paint is shown in figure 1 .

Embodiment 2

[0046] Preparation of water-based nano-ATO antistatic coating: 4g of nano-antimony-doped tin dioxide (brand: ESN-185, spherical), 3g of deionized water, and 3g of KH-550 (γ-aminopropyltriethoxysilane) were placed in the In the ball mill jar, adjust the pH of the mixture to ≈8, and carry out ball milling for 1 hour, with the speed of the ball mill at 225 rpm. The slurry after ball milling was taken out, and 4 g of commercially available styrene-acrylic emulsion with a solid content of 50% was added to obtain the water-based nano-antimony-doped tin dioxide antistatic coating.

[0047] The resulting slurry was brushed on the cement board, dried and cured naturally, the color of the cured coating was grayish blue, the thickness was about 1 mm, and the surface resistivity was measured with a ZC-46A megger to be 4.5×10 5 Ω.

[0048] Gained slurry is observed and photographed with a transmission electron microscope (JEM-1200EX II) of Japan JEOL Company, and the dispersion state of n...

Embodiment 3

[0050] Nano antimony-doped tin dioxide (brand name: ESN-185, spherical) 3.00g, mass concentration 30% polyamide resin / isopropanol solution 4.70g, isopropanol butanone 4.50g, dimethylformamide 0.03g Put it into a ball mill tank for ball milling, the speed of the ball mill is 225rpm, and the ball milling time is 16h. The slurry after ball milling is taken out to obtain the antistatic coating of nano antimony-doped tin dioxide.

[0051] After diluting the above coating with isopropanol butanone to a coating weight concentration of 30%, the slurry is coated on the surface of the corona-pretreated PET film with a scraper bar, and the coating is measured with a ZC-46A high resistance meter. The surface resistivity of the layer is 10 8 Ω / sq; the film coated with antistatic coating was broken after quenching in liquid nitrogen, and its section was observed and photographed with a scanning electron microscope (JSM-6360-LV type) from Japan JEOL Company. For the dispersed state of tin ...

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Abstract

The invention discloses the nanometer stannic oxide antistatic coating and preparing method. The invention modifies the nanometer ATO with surface processing agent, reducing the surface free energy and improving ATO dispersity. The slurry coating has network structure after film curing, so it has good electrical conductivity. The coating material can be used in skin layer of high molecular synthetic material, and it has electrostatic resistance action.

Description

technical field [0001] The invention relates to an antistatic coating and a preparation method thereof, in particular to a nanometer antimony-doped tin dioxide antistatic coating and a preparation method thereof. Background technique [0002] Polymer materials are widely used in various fields of industrial production and daily life, but the electrostatic interaction caused by their insulating properties affects their own applications. It is generally believed that when the surface resistivity of the material is 1×10 6 ~1×10 12 When Ω, the material has antistatic effect. [0003] At present, the main means of antistatic is: on the one hand, control the generation of static charge, and on the other hand, quickly eliminate the generated static charge, so as to prevent the harm caused by static electricity. Adding antistatic agents to improve the conductivity of polymer materials is the most fundamental, effective and important method of antistatic at present. Antistatic ag...

Claims

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Application Information

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IPC IPC(8): C09D177/00C09D133/00C09D101/18C09D125/06C09D5/00
Inventor 陈建定吴秋芳杨景辉陈国建陈刚
Owner SHANGHAI HUAMING HI TECH GRP
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