High-chroma glass-based pearlescent pigment as well as preparation method and application thereof

A pearlescent pigment, glass-based technology, applied in inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., can solve the problems of low activity, unsolved glass substrates, and difficulty in controlling the degree of ammonium fluoride etching glass , to achieve the effect of reducing metal oxide particles, solving balance matching, and improving coverage

Inactive Publication Date: 2018-10-26
FUJIAN KUNCAI MATERIAL TECH
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Problems solved by technology

The patent document with the publication number CN101768379B uses a certain concentration of ammonium fluoride to pretreat the glass substrate, and then coats a layer of alumina on its surface to increase the specific surface area and surface activity, and finally coats the surface of the activated substrate with Coated with a single layer of high-refractive metal oxide, compared with untreated glass substrates, the activity is improved, but the degree of glass etching with ammonium fluoride is also difficult to control
The patent document with the publication number CN101104748B describes a method of increasing the color density by designing alternate coatings of high-refractive index metal oxides and low-refractive index oxides. The color density is improved from the structure of the coating material. , did not solve the problem of low activity of the glass substrate itself

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  • High-chroma glass-based pearlescent pigment as well as preparation method and application thereof

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preparation example Construction

[0033] A preparation method of high chroma glass-based pearlescent pigment, comprising the following steps:

[0034] (1), adding water to the glass substrate for stirring and beating, adjusting the temperature and pH, then adding an inorganic salt treatment agent, then adding an organosilane coupling agent, filtering and washing after the reaction, and then adding water again for beating;

[0035] Preferably, the inorganic salt treatment agent is stannous chloride;

[0036] Preferably, in the step of adding water to the glass substrate for stirring and beating, the quality of the water is 10-50 times the mass of the glass substrate, more preferably 15-25 times, more preferably 18- 22 times;

[0037] (2), adjust the temperature and pH value after beating, add metal salts corresponding to metal oxides to coat the glass substrate, and finally wash, dry, and calcinate to obtain the high-chroma glass-based pearlescent pigment;

[0038] Preferably, the temperature is 75-85°C;

[...

Embodiment 1

[0055] Weigh 100g of glass flakes with a particle size of 10-60μm, put them in a 5L beaker, add 2000mL of deionized water, put them in a water bath, stir at 200-300rps, heat up to 60-70°C, and adjust the solution When the pH value is between 1.2-1.8, add 0.5% stannous chloride, and after stirring for half an hour, continue to add 2.5% N-2-aminoethyl-3-aminopropyltrimethoxysilane, and finish adding in 1 hour After filtering and washing, add deionized water again and stir evenly, raise the temperature to 75-85°C, adjust the pH value of the solution between 2.0-2.5, and add 2mol / L titanium tetrachloride solution dropwise at a rate of 1mL / min , and keep the pH value of the solution constant with NaOH solution, after reacting for 2-3 hours, filter, put the filter cake into a muffle furnace after drying, raise the temperature to 600°C at a heating rate of 10°C / min, and keep it warm for 1 hour, Take it out and cool it down to room temperature to get silver white glass-based pearlesce...

Embodiment 2

[0057] Weigh 100g of glass flakes with a particle size of 10-60μm, put them in a 2L beaker, add 1500mL of deionized water, put them in a water bath, stir at 200-300rps, heat up to 60-70°C, and adjust the solution When the pH value is between 1.2-1.8, add 0.5% stannous chloride, and after stirring for half an hour, continue to add 2.5% N-2-aminoethyl-3-aminopropyltrimethoxysilane, and finish adding in 1 hour After filtering and washing, add deionized water again and stir evenly, heat up to 75-85°C, adjust the pH value of the solution between 3-4, add dropwise 10% ferric chloride solution at a rate of 2mL / min, and Use 30% NaOH solution to maintain the pH value of the solution. After reacting for 3-4 hours, filter, dry the filter cake and put it in a muffle furnace. Raise the temperature to 600°C at a heating rate of 10°C / min and keep it warm for 1 hour. , taken out, and cooled to room temperature to obtain red mica iron pearlescent pigment.

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Abstract

The invention provides a high-chroma glass-based pearlescent pigment as well as preparation method and application thereof. In the preparation method, stannous chloride is adopted for treatment to increase the surface active points, then a silane coupling agent with amino is adopted for further chemical grafting treatment to improve the surface adsorption capacity; since the amino functional grouphas remarkably strong complexing power on iron and titanium ions, the balance matching of the metal ions between the hydrolysis speed and the base material surface adsorption speed is further solved.The treated glass base material is greatly improved in the coating rate as well as the chroma. With the same particle size and the same hue, the coating rate of the treated glass base material is increased by about 10%, and the chroma and brightness are obviously improved. The high-chroma glass-based pearlescent pigment is applied to the fields of paint, coating, plastics, leather coloring, wallpaper, powder coating and cosmetics.

Description

technical field [0001] The invention relates to the field of daily chemical industry, in particular to a glass-based pearlescent pigment with high chroma and its preparation method and application. Background technique [0002] Pearlescent pigments are special pigments with unique luster and attractive colors similar to natural pearls, and are widely used in paints, plastics, ceramics, paper, leather, glass, cosmetics, decorations, building materials and automobiles because of their unique optical properties industry and other fields. As the market has higher and higher requirements for the quality, color and brightness of pearlescent pigments, the research on pearlescent pigments has also become more in-depth. The structure of pearlescent pigments is also becoming more and more complex, from the original single coating to multi-coating, single metal oxide coating becomes one or more combinations, and pearlescent pigments with different substrates also appear. Pearlescent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C3/06C09C3/12
CPCC01P2006/60C01P2006/65C09C1/0015C09C3/006C09C3/063C09C3/12
Inventor 费明丁家国邱玉琴谢秉昆
Owner FUJIAN KUNCAI MATERIAL TECH
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