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Anti-static paint and its preparing method

An antistatic and coating technology, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as inconvenient construction, large proportion of conductive fillers, easy to sink and agglomerate, and achieve long-lasting antistatic performance Stable, low preparation cost, less dosage effect

Inactive Publication Date: 2007-11-14
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal-based and metal-oxide-based conductive fillers have a large specificity, and when added in large quantities, they tend to sink to the bottom and agglomerate, which is not convenient for construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: take conductive bamboo charcoal as filler, take the antistatic coating of polyurethane resin varnish as matrix

[0021] The preparation method is as follows: the raw materials for the production of bamboo charcoal come from Moso bamboo, green bamboo, Cizhu or other bamboo species, and the bamboo is calcined at a high temperature of 900 ° C for 10 hours in isolation from the air to become bamboo charcoal, and the bamboo charcoal is ground into a powder with an average particle size of 35 μm in a ball mill. Bamboo charcoal particles, the conductivity of bamboo charcoal is measured under the condition of sufficient compaction (generally pressed to 1 / 2 of the original volume), and its volume resistivity is controlled at 0.1-100Ω cm, and bamboo charcoal with a weight percentage of 20-40 The remaining polyurethane resin and solvent are mixed together, and conventional construction techniques such as spraying or brushing can be used. When the bamboo charcoal fill...

Embodiment 2

[0022] Embodiment 2: take conductive charcoal as filler, take the antistatic coating of phenolic resin varnish as matrix

[0023] The preparation method is as follows: the raw material for charcoal production comes from broad-leaved tree wood, which is calcined at a high temperature of 800 ° C for 20 hours in the absence of air to become charcoal, and the charcoal is ground into charcoal particles with an average particle size of 35 μm in a ball mill. Measure under realistic conditions (generally pressed to 1 / 2 of the original volume), the volume resistivity is controlled at 0.1-100Ω cm, charcoal with a weight percentage of 20-50 is mixed with the remaining amount of phenolic resin and solvent, Conventional construction techniques such as spraying or brushing can be used. When the charcoal filling rate is 20%, 25%, 30%, 35%, 40%, 45%, and 50%, the surface resistivity (average value) is 32.5MΩ, 6.7MΩ, 4.6MΩ, 108.7kΩ, 26.8 kΩ, 8.1kΩ, and 4.1kΩ can meet the antistatic requiremen...

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Abstract

The present invention is a kind of antistatic paint and its preparation process. Technologically, biological carbon with high conductivity is added to prepare antistatic paint with antistatic performance similar to that of antistatic plastic, and the antistatic performance is lasting, stable and unchanged with humidity and time. The technological scheme is that the antistatic paint consists of conducting biomass carbon particle as conducting medium in 2-50 wt%, resin adhesive as base material and solvent. The present invention may be used in electronic equipment, container, pipeline, etc.

Description

technical field [0001] The invention relates to paint, especially an antistatic paint and a preparation method thereof. Suitable for finishing of electronic equipment, containers and pipes, interior decoration, furniture, etc. Background technique [0002] Regarding the definition of polymer conductive materials, there is no unified standard at home and abroad so far. In a broad sense, the volume resistivity is generally less than 10 10 Ω cm (or surface resistivity less than 10 11 Ω) polymer materials are collectively referred to as polymer conductive materials, which can be divided into polymer antistatic materials (10 6 ~10 10 Ω cm), mainly used to eliminate static electricity; polymer semi-conductive materials (10 0 ~10 6 Ω cm), mainly used in heating, electrodes, resistance; polymer conductive materials (<10 0 Ω·cm), mainly used in conduction and electromagnetic shielding. [0003] According to the difference of the raw materials used and the difference of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D161/06C09D133/00C09D167/04C09D5/00
Inventor 邵千钧张齐生于红卫张文标张宏
Owner ZHEJIANG FORESTRY UNIVERSITY
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