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Composite titanium dioxide and preparation method thereof

A composite titanium dioxide and titanium dioxide technology, which is applied in chemical instruments and methods, dyed organic silicon compound treatment, dyed high molecular organic compound treatment and other directions, can solve the problems such as the restriction of the dispersion state of composite titanium dioxide and the failure to be widely used. , to achieve the effects of good compatibility, improved whiteness, and reduced cost of use

Inactive Publication Date: 2015-09-30
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of this composite titanium dioxide as an inorganic filler in organic resins has not been widely used because of its dispersion state.

Method used

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  • Composite titanium dioxide and preparation method thereof
  • Composite titanium dioxide and preparation method thereof
  • Composite titanium dioxide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add the calcium oxide material to 85°C hot water for digestion reaction, stir until the calcium oxide is completely digested into calcium hydroxide, and then stand still for 24 hours without air. After filtering through a 200-mesh sieve to remove the residue, add water to dilute, adjust the concentration of calcium hydroxide to 0.2mol / L and transfer it to a reaction glass column. Pass the vent glass tube to the bottom of the glass column, and carbonize the mixture of carbon dioxide and nitrogen according to the molar ratio of 3:10 through the gas tube. The reaction was carried out at a reaction temperature of 0° C., and the change of the pH value was detected, and the aeration was stopped when the pH value reached 7. The average particle size of the obtained nanometer calcium carbonate is 45nm. The obtained nano-calcium carbonate slurry is poured into a reaction kettle to carry out surface graft polymerization. Add 2wt% MMA polymerization monomer of calcium carbonate ...

Embodiment 2

[0015] Add the calcium oxide material to 90°C hot water for digestion reaction, stir until the calcium oxide is completely digested into calcium hydroxide, and then stand still for 24 hours without air. After filtering through a 250-mesh sieve to remove the residue, add water to dilute, adjust the concentration of calcium hydroxide to 0.3mol / L and transfer it to a reaction glass column. Pass the vented glass tube to the bottom of the glass column, and carbonize the mixture of carbon dioxide and nitrogen according to the molar ratio of 4:10 through the gas tube. The reaction was carried out at a reaction temperature of 5° C., and the change of the pH value was detected, and aeration was stopped when the pH value reached 7. The average particle size of the obtained nano-calcium carbonate is 50nm. The obtained nano-calcium carbonate slurry is poured into a reaction kettle to carry out surface graft polymerization. Add 2wt% MMA polymerization monomer of calcium carbonate mass, a...

Embodiment 3

[0018] Add the calcium oxide material to 95°C hot water for digestion reaction, stir until the calcium oxide is completely digested into calcium hydroxide, and then stand still for 24 hours without air. After filtering through a 250-mesh sieve to remove the residue, add water to dilute, adjust the concentration of calcium hydroxide to 0.35mol / L and transfer it to a reaction glass column. Pass the vent glass tube to the bottom of the glass column, and carbonize the mixture of carbon dioxide and nitrogen according to the molar ratio of 4:12 through the gas tube. The reaction was carried out at a reaction temperature of 0° C., and the change of the pH value was detected, and the aeration was stopped when the pH value reached 7. The average particle size of the obtained nanometer calcium carbonate is 48nm. The obtained nano-calcium carbonate slurry is poured into a reaction kettle to carry out surface graft polymerization. Add 2wt% MMA polymerization monomer of calcium carbonate...

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Abstract

The invention discloses a composite titanium dioxide and a preparation method thereof. The preparation method of the composite titanium dioxide comprises the steps that nano-calcium carbonate is prepared through a bubbling method, a small amount of methyl methacrylate is added to the nano-calcium carbonate for surface decoration, the decorated calcium carbonate, barium sulfate, titanium dioxide are mixed proportionally and added to a reaction device, a titanate coupling agent, simethicone, silane coupling agent and isopropanol are added to the reaction device dropwise, and after filtering and drying, high-dispersion high-brightness composite titanium dioxide is obtained. The composite titanium dioxide can be effectively dispersed into polymer matrix, improves the whiteness of titanium dioxide and reduces the use cost of titanium dioxide.

Description

technical field [0001] The invention belongs to the field of new chemical materials, and in particular relates to a composite titanium dioxide and a preparation method thereof. In particular, it relates to a method for preparing composite titanium dioxide that can be effectively dispersed in ABS resin. Background technique [0002] Titanium dioxide has stable physical and chemical properties and excellent whiteness, tinting strength, hiding power and heat resistance, and is widely used in coatings, plastics, papermaking, printing inks, chemical fibers, rubber, cosmetics and other industries. As a white pigment, titanium dioxide has many advantages such as high hiding power, high finish, high whiteness and strong weather resistance. However, the main component of untreated titanium dioxide is titanium dioxide, and its surface is attached by polar groups (such as -OH), so titanium dioxide is easy to agglomerate due to polar adsorption or moisture absorption, and it is difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/06C09C3/12C09C3/08C09C3/10
Inventor 马晓坤赵纯王子忱周兵赵旭
Owner JILIN UNIV
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