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Carbon black composite pigment as well as preparation method and application thereof

A composite pigment and carbon black technology, applied in inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., can solve the problems of short life, easy degradation of organic matter, and not bright enough color, and achieve high production efficiency and good color effect. , strong coloring effect

Inactive Publication Date: 2018-04-17
SHANTOU LONGHUA PEARL LUSTRE PIGMENTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of existing pearlescent pigments such as easy degradation of organic matter, short service life, and insufficient color, and provide a carbon black composite pigment, a preparation method and its application, which are more suitable for practical use and have industrial applications. value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 30 grams of titanium series interference silver-white pearlescent pigments with a particle size of 10-60 microns and natural mica as the substrate as the coated substrate, put it in a 2000 ml reaction kettle, add 800 ml of deionized water, and turn on the stirring The tank liquid is uniformly dispersed and heated to 50°C. 60 grams of carbon black solution with a concentration of 0.5% was metered at 30 ml / h, and 1.5 grams of a concentration of 40% silane coupling agent (3-aminopropyltriethoxysilane) was added simultaneously, during which 10% hydrogen was used Sodium oxide or 10% hydrochloric acid keeps the pH of the system stable at 9.5. When the feeding is completed, the original pearlescent pigment that interferes with the silver-white substrate in the kettle liquid has become a silver-gray pearlescent pigment, and the temperature is kept constant, and the kettle liquid is further stirred to continue the reaction for 30 minutes. Filter the suspension in the reac...

Embodiment 2

[0032] Weigh 30 grams of titanium series interference red pearlescent pigment with a particle size of 10-60 microns and natural mica as the coating substrate, put it in a 2000 ml reaction kettle, add 800 ml of deionized water, and turn on the stirrer The kettle liquid was evenly dispersed and heated to 60°C. 60 g of carbon black solution with a concentration of 0.5% was metered at 30 ml / h, and 1.5 g of a 40% silane coupling agent (3-aminopropyltrimethoxysilane) was added at the same time. Sodium or 10% hydrochloric acid kept the pH of the system stable at 9.5. When the feeding is completed, the original pearlescent pigment that interferes with the red substrate in the kettle liquid has changed into an interference red pearlescent pigment with a black hue in appearance. Keep the temperature constant, and the kettle liquid is further stirred to continue the reaction for 30 minutes. Filter the suspension in the above reaction kettle, wash it with deionized water, and dry it in a...

Embodiment 3

[0034] Weigh 30 grams of titanium series interference silver-white pearlescent pigments with a particle size of 10-60 microns and natural mica as the substrate as the coated substrate, put it in a 2000 ml reaction kettle, add 800 ml of deionized water, and turn on the stirring The tank liquid is evenly dispersed and heated to 70°C. Adding 130 gram concentration is 1.5% carbon black solution with 30ml / h metering, adds 4 gram concentration simultaneously and is 40% silane coupling agent (2-aminoethyl-3-aminopropyltrimethoxysilane), when carbon black When the add-on of solution still left 65 grams, add 4 gram concentration again and be 40% silane coupling agent (2-aminoethyl-3-aminopropyl methyldiethoxysilane), during this period use 10% Sodium hydroxide or 10% hydrochloric acid keeps the pH value of the system stable at 8.5. When the feeding is completed, the original pearlescent pigment that interferes with the silver-white substrate in the kettle liquid has become a black-gra...

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Abstract

The invention relates to carbon black composite pigment as well as a preparation method and an application thereof. The carbon black composite pigment comprises a flaky substrate, a coloring layer anda coupling agent layer, wherein the coloring layer and the coupling agent layer coat the flaky substrate. The carbon black composite pigment is prepared at the temperature of 20-80 DEG C with the pHvalue ranging from 8 to 11, substrates are dispersed in deionized water, a carbon black solution and a silane coupling agent with known mass concentrations are added through metering under the condition of continuous stirring, and novel black series pigment with different hue effects can be prepared through addition of different quantities of carbon black and coupling agents. The pigment can be widely applied to coatings, printing ink, plastic, leather and other fields.

Description

technical field [0001] The invention relates to a carbon black composite pigment, which is based on coating carbon black on a flaky base material to make the pigment have a black effect, a preparation method and an application thereof. Background technique [0002] Pearlescent pigment is a kind of pigment that can produce pearly luster. Since the pearlescent pigment is coated on the substrate with different refractive index, when the light shines on each pigment sheet of the pearlescent pigment, the light passes through the pigment film. When the layer and the substrate interface layer, it will produce a pearl-like luster formed by multiple reflections, refractions, and transmissions. Effect pigments have this special luster and are widely used in fields such as plastics, cosmetics, paints and leather. [0003] When titanium series pearlescent pigments are used in coatings, plastics and other industries, due to the strong photochemical activity of titanium dioxide, the reac...

Claims

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Application Information

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IPC IPC(8): C09C1/40C09C1/30C09C3/12C09C3/06
Inventor 张军礼
Owner SHANTOU LONGHUA PEARL LUSTRE PIGMENTS CO LTD
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