Preparation process of mica-based pearlescent pigment with high weather resistance

A pearlescent pigment and preparation technology, which is applied in the treatment of inorganic pigments, fibrous fillers, dyed organic silicon compounds, etc., can solve the problems of increasing production costs, achieve the effects of reducing micropores, low production costs, and ensuring high dispersion

Active Publication Date: 2013-12-04
杭州弗沃德精细化工有限公司
View PDF16 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is only suitable for synthesizing mica, and two coupling agents, epoxy silane and amin

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation process of mica-based pearlescent pigment with high weather resistance
  • Preparation process of mica-based pearlescent pigment with high weather resistance
  • Preparation process of mica-based pearlescent pigment with high weather resistance

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043] Example 1:

[0044] The silver muscovite titanium pearlescent pigment (FWD103) was used as the transparent flake substrate to prepare the pearlescent pigment. The preparation steps are:

[0045] a. Weigh 40 g of silver muscovite titanium pearlescent pigment, put it into the reactor, add 450 mL of deionized water, stir and raise the temperature to 75° C., adjust the pH to 8.5 with an ammonia solution.

[0046] b. Mix absolute ethanol and methyl orthosilicate to contain SiO 2 The silicon precursor ethanol mixture with a mass fraction of 14%, 15 g of the silicon precursor ethanol mixture was pumped into the reactor with a constant flow pump, and the addition was completed within 2 hours, and then the reaction was continued for 1 hour to obtain the mother liquor.

[0047] c. The mother liquor was filtered, washed with deionized water 4 times, dried in an oven at 100°C for 6 hours, and then the pigment obtained after drying was put into the reactor again, and 450 mL of deionized ...

Example Embodiment

[0052] Example 2:

[0053] The silver muscovite titanium pearlescent pigment (FWD103) was used as the transparent flake substrate to prepare the pearlescent pigment. The preparation steps are:

[0054] a. Weigh 40 g of silver muscovite titanium pearlescent pigment, put it into the reactor, add 450 mL of deionized water, stir and raise the temperature to 85° C., and adjust the pH to 9 with ammonia solution.

[0055] b. Mix absolute ethanol and methyl orthosilicate to contain SiO 2 20 g of silicon precursor ethanol mixture with a mass fraction of 20%, 20 g of silicon precursor ethanol mixture was pumped into the reactor with a constant flow pump, the addition was completed within 2 hours, and then the reaction was continued for 1 hour to obtain mother liquor.

[0056] c. The mother liquor was filtered, washed with deionized water 4 times, dried in an oven at 100°C for 8 hours, and then the pigment obtained after drying was put into the reactor again, and 450 mL of deionized water was...

Example Embodiment

[0061] Example 3:

[0062] The silver muscovite titanium pearlescent pigment (FWD103) was used as the transparent flake substrate to prepare the pearlescent pigment. The preparation steps are:

[0063] a. Weigh 40 g of silver muscovite titanium pearlescent pigment, put it into the reactor, add 450 mL of deionized water, stir and raise the temperature to 80° C., adjust the pH value to 9.5 with ammonia solution.

[0064] b. Mix absolute ethanol and methyl orthosilicate to contain SiO 2 With a mass fraction of 18% silicon precursor ethanol mixture, 15 g of the silicon precursor ethanol mixture was pumped into the reactor with a constant flow pump, added within 2 hours, and then continued to react for 1 hour to obtain a mother liquor.

[0065] c. The mother liquor was filtered, washed with deionized water 4 times, dried in an oven at 100°C for 7 hours, and then the pigment obtained after drying was put into the reactor again, and 450 mL of deionized water was added, and the temperature...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a preparation process of a mica-based pearlescent pigment with high weather resistance. The preparation process comprises the following steps: using metal oxide such as titanium dioxide and ferric oxide to clad the surface of mica with a certain grain size distribution to obtain a base material in a certain series of the pearlescent pigment, using photostable substances such as SiO2, Al2O3 and CeO2 to cover the surface of the base material, performing organic modification on the surface of the pigment by using a silane coupling agent KH570, and then obtaining the mica-based pearlescent pigment with the high weather resistance after suction filtration, washing and drying. The preparation process of the mica-based pearlescent pigment is reasonable in design, simple in operation, low in equipment cost, low in energy consumption, and suitable for large-scale production; the prepared pearlescent pigment is good in color and gloss, and suitable for occasions such as automotive, marine and outdoor decoration which have high weather resistance requirements.

Description

technical field [0001] The invention relates to a preparation process of mica-based pearlescent pigments with high weather resistance, which can prepare mica-based pearl pigments with high weather resistance, and belongs to the category of weather-resistant pearlescent pigments based on a multi-layer inorganic-organic hybrid composite weather-resistant coating process preparation. Background technique [0002] Pearlescent pigments are micropowders formed by chemically depositing one or more layers of metal oxide thin layers on the surface of mica flakes as the base material. They are high-performance materials that increase the added value of products. Compared with other pigments, pearlescent pigments have a special surface structure, higher refractive index and good transparency. In transparent media, pearlescent pigments can create the same effect as pearl luster. At present, pearlescent pigments have been widely used in many fields such as coatings, inks, plastics, prin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09C1/40C09C3/06C09C3/12
Inventor 周峰蒋汉文周亚军高勇沈艳娥
Owner 杭州弗沃德精细化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products