Conductive pearlescent pigment and preparation method thereof

A technology of pearlescent pigments and conductive coatings, which is applied in the field of inorganic pigments and can solve problems such as complex equipment and processes

Inactive Publication Date: 2016-10-12
林一中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It is recorded in "Manufacturing, Processing and Application of Pearlescent Pigments, P46" that a mixture of mica flakes and hydrocarbons is made into a suspension, sprayed at high speed, and thermally decomposed in a reducing atmosphere to crack hydrocarbons into ultrafine carbon black Particles are attached to the surface of mica flakes to make black pearlescent pigment coated with carbon black. This method is prepared by gas phase process, and the equipment process is complicated

Method used

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  • Conductive pearlescent pigment and preparation method thereof
  • Conductive pearlescent pigment and preparation method thereof
  • Conductive pearlescent pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Weigh 10g of commercially available mica titanium pearlescent pigment AG100 (AG100, using natural mica (Mica) as the base material, the particle size range is 10-60 μm, TiO 2 The coating rate is about 29%, and it is prepared by co-current hydrolysis with titanium tetrachloride as the deposition agent. The so-called coating ratio refers to the percentage of coating contained in the pearlescent pigment per unit mass. If the coating in the above-mentioned AG100 is titanium dioxide, and the content of titanium dioxide per 100g of AG100 is 29g, then the coating rate of titanium dioxide in AG100 is 29%. The composition of the above AG100 can be expressed as: TiO 2(0.29) / Mica) is placed in a reactor, 100g of water is added therein to prepare a suspension, and stirred until the dispersion is uniform. The suspension was heated to 80°C, and 2 g of polyethylene glycol 200 (which can be expressed as HO(CH 2 CH 2 O) n H, also known as polyoxyethylene ether, is a compound conta...

Embodiment 2

[0077] Weigh 10g of synthetic mica titanium pearlescent pigment AG6231 (AG6231, using synthetic mica as the base material, particle size range 10-60μm, SnO 2 The coating ratio is about 0.5%, TiO 2 The coating ratio is about 38%, and it is prepared by co-current hydrolysis with titanium tetrachloride as a deposition agent) and placed in a reactor, to which 100g of water is added to prepare a suspension. Stir until evenly dispersed, heat the suspension to 90°C, add an aqueous solution containing 2.5g of polyvinyl alcohol PVA 17-92 (the average degree of polymerization of this product is 1700, and the degree of alcoholysis is 92%) to the suspension to adjust the pH value to 8.5, stirred for 2h, filtered and dried to obtain the precursor. The dried precursor was placed in an atmosphere furnace, and commercially available high-purity N 2 , heat up to 400°C, and keep warm for 2h. in N 2 Cool with the furnace under protection to obtain conductive pearlescent pigments.

[0078] U...

Embodiment 3

[0081] Weigh 10g natural mica powder, prepare AG532 (pearlescent pigment AG532, particle size range 20~80μm, its Fe 2 o 3 The coating rate is about 31%) in the preparation process, the intermediate product (semi-finished product 1) before the calcining treatment (the specific process is: take 10g natural mica powder, put it into the reactor, add 100mL water to stir and disperse to obtain a suspension, and react Raise the temperature of the material to 78°C, adjust the pH to 3.0, and under the condition of controlling the pH to 3.0, use ferric chloride as the sedimentation agent, use the co-current hydrolysis method, and pump the sedimentation agent with a certain feeding speed and constant flow, neutralize agent until the end of the hydrolysis reaction reaches the specified coating rate), then maintain the reaction temperature, add 2.5g glucose to the suspension, adjust the pH value to 8.0, stir for 2h, filter, and dry to obtain the precursor. The dried precursor was placed i...

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Abstract

The invention discloses conductive pearlescent pigment and a preparation method thereof. The conductive pearlescent pigment comprises a pearlescent pigment basal body and a conductive coating layer coated on the surface of the pearlescent pigment basal body, wherein the conductive coating layer is prepared on the surface of the pearlescent pigment basal body in situ by a treatment agent. The preparation method comprises the step of after coating the pearlescent pigment basal body by the treatment agent, calcining the coated pearlescent pigment basal body at high temperature under a vacuum environment or under the atmosphere of non-activity gas and / or reduction gas. The preparation method of the conductive pearlescent pigment, disclosed by the invention, is simple in craft, strong in controllability and low in cost, the conductivity of a prepared product is excellent, and the conductive coating layer is unlikely to fall off.

Description

technical field [0001] The invention belongs to the field of inorganic pigments, in particular to a conductive pearlescent pigment and a preparation method thereof. Background technique [0002] Pearlescent pigment is a kind of effect pigment with pearl luster, which is widely used in coatings, plastics, cosmetics, anti-counterfeiting inks, printing and dyeing, leather, rubber, paper printing and other fields. The structure of the pearlescent pigment layer (taking a single-layer coated pearlescent pigment as an example) and the schematic diagram of the gloss principle are as follows figure 1 shown. It can be seen from this figure that the color of the pearlescent pigment is a false color caused by reflection interference of light. According to the thickness of the outer cladding layer, interference colors such as silver white, gold, red, purple, blue and green are produced sequentially. In recent years, with the continuous expansion of the application field of pearlescent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/06C09C3/08C09C3/10
CPCC09C1/0015C01P2006/40C09C3/006C09C3/063C09C3/08C09C3/10C09C2200/1029C09C2200/404C09C2200/406C09C2220/10
Inventor 林一中王振兴张骞
Owner 林一中
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