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Carbon black coloring pearlescent pigment and preparation method thereof

A pearlescent pigment and carbon black technology, applied in the field of inorganic pigments, can solve the problems of difficult control of the thickness of the carbon layer on the surface of pearlescent pigments, poor adhesion, etc.

Active 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

In the literature "Preparation of Phthalocyanine Blue-Activated Carbon Composite Mica Titanium Pearlescent Pigment" (Hou Wenxiang, Tan Junru, Fu Xiansong, etc. Preparation of Phthalocyanine Blue-Activated Carbon Composite Mica Titanium Pearlescent Pigment, Coating Industry, 2002, (5): 22 -24.) has recorded a method for preparing composite carbon-coated pearlescent pigments, mainly considering that phthalocyanine blue and activated carbon are not easy to disperse in the water phase, and adding surfactant makes the surface of activated carbon and mica titanium pearlescent pigments Compatible and use AlCl 3 Al(OH) produced by hydrolysis 3 As a lake agent, the thickness of the carbon layer on the surface of the pearlescent pigment obtained by this method is not easy to control, and the adhesion is poor

Method used

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  • Carbon black coloring pearlescent pigment and preparation method thereof
  • Carbon black coloring pearlescent pigment and preparation method thereof
  • Carbon black coloring pearlescent pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Take by weighing 10g of commercially available natural mica-based titanium pearlescent pigment AG111 pigment (natural mica-based pearlescent pigment, particle diameter<15 μm, titanium dioxide coating rate 43%, use titanium tetrachloride as a depositing agent and use parallel flow hydrolysis to prepare. (so-called coating Coverage refers to the percentage of coating contained in the pearlescent pigment per unit mass. If the coating is titanium dioxide in the above-mentioned AG111, and the titanium dioxide contained in every 100g AG111g is 43g, then the coating rate of titanium dioxide in AG111 is 43%.) In the reactor, add 100g of water to prepare a suspension. Stir until the dispersion is uniform, heat the suspension to 80°C, add 2.5g of polyethylene glycol 600 to the suspension, adjust the pH to 8.5, and stir for 2 hours , filtered, and dried to obtain the precursor.

[0085] The dried precursor was placed in a vacuum furnace, evacuated to an absolute pressure of 0.01 P...

Embodiment 2

[0087] Weigh 10g of synthetic mica-based pearlescent pigment AG6531 (AG6531, using synthetic mica as the base material, particle size range 10-60 μm, Fe 2 o 3 The coating rate is about 36%, using ferric chloride as a sedimentation agent and using parallel hydrolysis method) to place in the reactor, add 55g water to it to prepare a suspension, stir until uniformly dispersed, and heat the suspension to 85 ℃, add 2g to the suspension HYDROSIL 2909 (is a HO [SiR 61 (OH)O] x6 [SiR 62 (OH)O] y6 Aqueous silane with aminopropyl and isobutyl of general formula H), adjust the pH value to 8.5, stir and react for 1 h, filter, and dry to obtain the precursor.

[0088] The dried precursor was placed in an atmosphere furnace, argon (Ar) was introduced, the temperature was raised to 600° C., and the temperature was kept for 1.5 h. Under the protection of argon (Ar), cool with the furnace to obtain the carbon black colored pearlescent pigment. The prepared carbon black-coated pearlesce...

Embodiment 3

[0094] Take by weighing 10g of the intermediate product (semi-finished product 2) before the calcining treatment in the synthetic mica-based pearlescent pigment AG6126 process (semi-finished product 2, this intermediate product uses synthetic mica as the base material, the particle size range is 5 ~ 5 μm, and the first layer of cladding layer is tin dioxide hydrate , the coating rate is about 0.8% in terms of tin dioxide, and is prepared by co-current hydrolysis with tin tetrachloride as the deposition agent. The second coating layer is titanium dioxide hydrate, and the coating rate after calcination is calculated in terms of titanium dioxide About 38%, using titanium tetrachloride as a sedimentation agent and using co-current hydrolysis to prepare.) Place in a reactor, add 100g of water to it to prepare a suspension. Stir until evenly dispersed, heat the suspension to 80° C., add 1.2 g of octyltriethoxysilane to the suspension, adjust the pH to 3.0, stir for 1.5 h, filter, and...

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Abstract

The invention discloses carbon black coloring pearlescent pigment and a preparation method thereof. The carbon black coloring pearlescent pigment comprises a pearlescent pigment matrix and a carbon black coloring layer which is prepared in situ on the surface of the pearlescent pigment matrix by a treating agent. The preparation method includes: using the treating agent to envelope the pearlescent pigment matrix; calcining at high temperature in an atmosphere of inactive gas and / or reductive gas or in a vacuum condition. The preparation method is simple in process, high in controllability and repeatability and low in cost, and the carbon black coloring pearlescent pigment prepared by the method is compact in carbon layer, firm in bonding, less prone to decoloring and easy in large-scale production.

Description

technical field [0001] The invention belongs to the field of inorganic pigments, and in particular relates to a carbon black colored 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 order to achieve a specific effect, it is necessary to color ...

Claims

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Application Information

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IPC IPC(8): C09C1/40C09C3/06
CPCC01P2006/40C09C1/0015C09C1/0021C09C3/063C09C2200/401C09C2220/10
Inventor 林一中王振兴张骞
Owner 林一中
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