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Assembling modification and integration process for preparing functional white dye

A white pigment, functional technology, applied in the field of materials that can be used as white pigments, can solve the problems of shortage of raw material titanium resources, large amount of titanium dioxide, low utilization rate of raw materials, etc., to improve the performance of applied products, high product recovery rate, The effect of reduced losses

Inactive Publication Date: 2007-01-03
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the problems in the production of white pigment titanium dioxide are: (1) the shortage of raw material titanium resources in the world; (2) the utilization rate of raw materials prepared by my country's titanium dioxide is low, and its price is expensive; "The production process is complex and the environment is seriously polluted
The patent (publication number CN1724595) proposes a white mineral powder-TiO 2 A method for preparing a composite white pigment. The white pigment prepared by this method can be used in coatings, plastics, and papermaking. However, the preparation process of this method is relatively complicated, the process is long, the amount of titanium dioxide is large, and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0013] (1) 50kg of lithopone industrial product and 310kg of heavy calcium carbonate (particle size-43 microns, whiteness 95%, purity 98%), soluble polyacrylate dispersant (consumption 1kg) and deionized water (150kg) are fully stirred Mix and then grind for 3 hours in an ordinary wet method ultra-fine grinding and peeling machine (BP80 type), after grinding, the product particle size reaches 70% less than 2 microns, and the slurry concentration is 70.5%; (2) the rutile type without aftertreatment Mix 15kg of titanium dioxide, 75kg of anatase titanium dioxide, soluble polyacrylate dispersant (0.18kg) and 38kg of deionized water, then stir and disperse in a high-speed mixer for 60 minutes to obtain a completely dispersed membrane material slurry; (3) Mix the slurry of (1) above and the slurry of (2) into the modified reactor (improved peeling machine, that is, the inner lining material of the ordinary peeling machine is changed to corundum, and polyurethane is used as the materi...

example 2

[0015] (1) 80kg of lithopone industrial product and kaolin 280kg (particle size-43 micron, whiteness 94%, purity 97%) and dispersant soluble polyacrylate (consumption 0.8kg) and deionized water (190kg) are fully stirred and mixed , and then grind for 2.5 hours in an ordinary wet-process ultra-fine grinding and peeling machine (BP80 type), the product particle size after grinding reaches 68% less than 2 microns, and the slurry concentration is 65%; (2) the rutile type titanium without aftertreatment White powder 90kg, dispersant soluble polyacrylic acid salt (consumption 0.10kg) are mixed with deionized water 38kg, then stir and disperse in a high-speed mixer for 60 minutes to obtain a completely dispersed film material slurry; (3) the slurry of the above (1) The body and the slurry of (2) are mixed into the modified reactor (improved peeling machine, that is, the lining material of the ordinary type peeling machine is changed to corundum, and polyurethane is used as the materia...

example 3

[0017] (1) 50kg of lithopone industrial product and wollastonite 310kg (particle size-43 microns, whiteness 96%, purity 95%), dispersant soluble polyacrylate (consumption 1.2kg) and deionized water (150kg) are fully Stir and mix, and then grind for 3.5 hours in an ordinary wet-process ultrafine grinding and peeling machine (BP80 type), the product particle size after grinding reaches 72% less than 2 microns, and the slurry concentration is 70%; Titanium type titanium dioxide 90kg, dispersant soluble polyacrylic acid salt (consumption 0.10kg) and deionized water 38kg are mixed, then stir and disperse in high-speed mixer 60 minutes and obtain the fully dispersed film material slurry; (3) above-mentioned (1 ) and (2) are mixed into the modified reactor (improved peeling machine, that is, the lining material of the ordinary peeling machine is changed to corundum, and polyurethane is used as the material of the stirring disc) and the assembly modifier polycarboxylate is added. Salt...

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PUM

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Abstract

The assembling modification and integration process for preparing functional white pigment belongs to the field of inorganic material technology. The functional white pigment is prepared through mixing white lithopone in 15-25 wt% with heavy calcium carbonate, wollastonite, kaolin or barium sulfate in 75-85 wt%; adding dispersant and deionized water in 0.2-0.8 wt% through stirring to form the core material; adding titanium white powder as filming material and assembling modification in an improved peeling machine to obtain slurry; and direct drying to obtain the white pigment. The present invention has simple preparation process, low cost and use performance similar to that of titanium white powder, and may be used to replace titanium white powder in plastic, papermaking, paint and other field to improve product performance and lower product cost.

Description

technical field [0001] The invention belongs to the field of inorganic materials, in particular to a material that can be used as a white pigment produced by an assembly, modification and integration technology. Background technique [0002] Titanium dioxide is the white pigment with the best performance in the chemical industry due to its good hiding power, coloring power and opacity, as well as light resistance, heat resistance and acid and alkali resistance. It is widely used in coatings, papermaking, printing, ink, chemical fiber, rubber, cosmetics and other industries. At present, the market share of titanium dioxide white pigment is over 90%. With the rapid development of the economy, the continuous improvement of people's living standards, and the rapid development of industries such as construction, chemicals, and materials, the demand for white pigments will rise sharply. At present, the problems in the production of white pigment titanium dioxide are: (1) the sho...

Claims

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Application Information

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IPC IPC(8): C09C3/10C09C3/04C09C1/00
CPCY02P20/10
Inventor 林海高玉娟黄曼胡永明
Owner UNIV OF SCI & TECH BEIJING
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