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Carbon-coated titanium pearlescent pigment and preparation method thereof

A pearlescent pigment and carbon coating technology, applied in inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problems of dull and uneven pearlescent pigments, achieve smooth and dense surface, ensure uniformity, color and luster Bright and even effect

Active Publication Date: 2021-07-13
FUJIAN KUNCAI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, gray-black pearlescent pigments are generally directly mixed with carbon black and titanium dioxide and mica, but the pearlescent pigments formed by this method are dull and uneven

Method used

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  • Carbon-coated titanium pearlescent pigment and preparation method thereof
  • Carbon-coated titanium pearlescent pigment and preparation method thereof
  • Carbon-coated titanium pearlescent pigment and preparation method thereof

Examples

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preparation example Construction

[0025] An embodiment of the present invention provides a method for preparing a carbon-coated titanium pearlescent pigment, comprising: adding a polymer monomer to a reaction system of titanium oxychloride and carbonate, so that the polymer monomer undergoes a polymerization reaction. First of all, the embodiment of the present invention utilizes titanium oxychloride and carbonate to carry out neutralization reaction to form nano-titanium dioxide particles, but the particle size of the formed titanium dioxide particles is small, and it is easy to agglomerate and become disordered, which in turn leads to the formation of titanium dioxide particles on the substrate. The particle distribution is uneven and not dense, which in turn leads to dull and uneven color of the entire pearlescent pigment. Adding polymer monomers to the reaction system of titanyl dichloride and carbonate can make the polymer monomers and polymer monomers polymerize to form Polymer, and the formed polymer ca...

Embodiment 1

[0036] The present embodiment provides a kind of preparation method of carbon coated titanium pearlescent pigment, comprising:

[0037] 0.6 mol of calcium carbonate was mixed with water to form a 30% calcium carbonate suspension by mass, and then combined with 15 grams of furfuryl alcohol to form the first mixture.

[0038] Mix 0.6 mol of titanyl chloride with water to form a 2M solution containing titanyl chloride. Add 100 grams of mica in the reactor, add water to 900 milliliters, adjust the pH of the system to 1, then add 300 milliliters of the above-mentioned solution containing titanium oxychloride dropwise, while adding the above-mentioned solution containing titanium oxychloride dropwise, add the second A mixture to keep the pH of the system constant.

[0039] After the reaction, filter and wash twice with water, then dry at 100° C. for 1 hour, and then calcinate at 500° C. for 30 minutes.

[0040] This embodiment provides a carbon-coated titanium pearlescent pigment,...

Embodiment 2

[0043] The present embodiment provides a kind of preparation method of carbon coated titanium pearlescent pigment, comprising:

[0044]0.7 mol of calcium carbonate was mixed with water to form a 30% calcium carbonate suspension by mass, and then combined with 10 grams of furfuryl alcohol to form the first mixture.

[0045] A solution containing titanium oxychloride formed by mixing titanium oxychloride and water. Add 100 grams of mica in the reactor, add water to 900 milliliters, adjust the pH of the system to 1.5, then add the above-mentioned solution containing titanium oxychloride dropwise, and add the first mixture dropwise while adding the above-mentioned solution containing titanium oxychloride , to maintain the pH of the system unchanged, wherein 100 grams of mica corresponds to the addition of 0.7 moles of titanium oxychloride.

[0046] After the reaction, filter and wash with water three times, then dry at 150° C. for 1.5 hours, and then calcinate at 800° C. for 30 m...

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Abstract

The invention relates to the technical field of pearlescent pigments, and in particular, relates to a carbon-coated titanium pearlescent pigment and a preparation method thereof. The preparation method of the carbon-coated titanium pearlescent pigment comprises the step that a polymer monomer is added into a reaction system of titanium oxychloride and carbonate, so that the polymer monomer is subjected to a polymerization reaction. A polymer monomer is added into the reaction system in which titanium oxychloride and carbonate react to form titanium dioxide, so that when titanium oxychloride and carbonate react, the polymer monomer also has a polymerization reaction to form a polymer, and then the polymer can coat the formed titanium dioxide, so that disordered aggregation and enlargement of particles are avoided, the uniformity of titanium dioxide particles formed by reactivity is ensured, then the finally formed pearlescent pigment is bright and uniform in color, and the surface is flat and compact.

Description

technical field [0001] The invention relates to the technical field of pearlescent pigments, in particular to a carbon-coated titanium pearlescent pigment and a preparation method thereof. Background technique [0002] Pearlescent pigments have the flash effect of metallic pigments, and can produce the soft color of natural pearls. When exposed to sunlight, they can produce multi-level reflections. The reflected light interacts to present soft or colorful luster and colors. It can be widely used in many fields such as coatings, plastics, rubber, inks, papers, textiles, cosmetics, decorations, handicrafts, leather, enamel, ceramics, packaging supplies, printing and decoration, and building materials. [0003] Pearlescent pigments in the prior art have various colors, such as blue, white, red and gray-black. Among them, gray-black pearlescent pigments are generally directly mixed with carbon black and titanium dioxide and mica, but the pearlescent pigments formed by this meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C1/40C09C3/04C09C3/06C09C3/10
CPCC01P2004/03C09C1/0015C09C3/006C09C3/043C09C3/063C09C3/10C09C2200/401
Inventor 费明林学周邱玉琴谢秉昆
Owner FUJIAN KUNCAI MATERIAL TECH
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