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Preparation method for coating material using conductive biomass charcoal as filling material

A biomass charcoal and filler technology, applied in conductive coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of inconvenient construction, large proportion of conductive fillers, easy to sink to the bottom and agglomerate, and achieve antistatic performance. Long-lasting stability, proper adjustment of surface resistivity, and low production cost

Inactive Publication Date: 2008-01-02
TIANJIN ZHENDONG PAINTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Electrostatic discharge can cause huge vicious accidents
Addition-type antistatic coatings have a large proportion of metal-based and metal-oxide-based conductive fillers, and when added in large quantities, they tend to sink and agglomerate, which is not convenient for construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1; A kind of coating preparation method with conductive biomass charcoal as filler, with conductive bamboo charcoal as filler, with polyurethane resin varnish as matrix, bamboo becomes bamboo charcoal after 10 hours insulated air calcining in the high temperature of 900 ℃, Bamboo charcoal is ground into bamboo charcoal particles with an average particle size of 35 μm in a ball mill. The conductivity of bamboo charcoal is measured under fully compacted conditions, and its volume resistivity is controlled at 0.1-100Ω·cm. , mixed with the remaining amount of polyurethane resin and solvent, and sprayed by spraying construction technology.

Embodiment 2

[0007] Embodiment 2: A kind of coating preparation method with conductive biomass charcoal as filler, with conductive charcoal as filler, with phenolic resin varnish as matrix, broad-leaved tree species wood becomes charcoal after being calcined at a high temperature of 800 ° C in air for 20 hours , charcoal is ground into charcoal particles with an average particle size of 35 μm in a ball mill, the electrical conductivity of charcoal is measured under fully compacted conditions, and its volume resistivity is controlled at 0.1-100Ω·cm, and the weight percentage is 20-50 Charcoal is mixed with the remaining amount of phenolic resin and solvent, and the spraying construction process is adopted.

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PUM

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Abstract

The invention discloses a paint making method based on conductive biological char as filler, which comprises the following steps: adopting conductive char as filler and phenol resin varnish as base; calcining broad-leaved tree species timber at 800 deg. c insulated by air for 20h to form char; grinding the char in the milling machine to form char particle with even grain size at 35um; measuring conductive property of char under sufficient compaction condition; controlling the bulk resistivity at 0.1-100 omega.cm; weighing 20-50% char to blend with residual phenol resin and solvent; adopting spray technique. The invention saves cost to increase antistatic property without breaking other properties, which can adjust surface resistivity.

Description

technical field [0001] The invention relates to a coating preparation method using conductive biomass charcoal as a filling material. Background technique [0002] Ordinary coatings are prone to static electricity accumulation during use due to their high electrical insulation properties. Electrostatic discharge can cause huge and vicious accidents. The metal-based and metal-oxide-based conductive fillers in additive-type antistatic coatings have a large proportion, and when added in large quantities, they tend to sink to the bottom and agglomerate, which is not convenient for construction. The carbon system has little effect on the physical properties of the coating. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned deficiencies, and to provide a coating preparation method using conductive biomass charcoal as a filler. [0004] The technical solution of the present invention is: a coating preparation method using ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/24C09D7/12
Inventor 张云波
Owner TIANJIN ZHENDONG PAINTS CO LTD
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