Method for testing color difference of natural mineral pigment in cooperation with colloidal water and polydimethylsiloxane

A technology of polydimethylsiloxane and dimethylsiloxane, which is applied in the field of color difference testing of natural mineral pigments, can solve the problems of low color fastness, uneven particle size distribution, uneven dispersion of pigments, etc. The effect of reducing the number of oxygen groups, avoiding shedding and cracking, and improving hydrophilicity

Active Publication Date: 2019-10-29
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Natural mineral pigments have weak adsorption properties and low color fastness, so glue alum water is needed to be firmly loaded on silk cloth or rock walls, and glue alum water and silk cloth or rock walls as carriers will greatly affect Pigment color performance
At the same time, the natural mineral pigment particles are large and uneven in particle size distribution, and their mass is much larger than that of organic pigment particles. It is also easy to cause uneven dispersion of pigments during coating.
Finally, the preparation of traditional pigment samples is largely affected by the craftsmen and utensils of the producers. If the drawing skills of the experimenters are not high, the quality of the finished samples will be uneven
These will greatly affect the determination of color difference

Method used

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  • Method for testing color difference of natural mineral pigment in cooperation with colloidal water and polydimethylsiloxane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) To ensure that the mineral pigment is dry and free of impurities, use a mechanical powder machine to crush the large turquoise particles into powder, and the crushing time is 1-1.1min;

[0035] 2) Process the turquoise pigment powder obtained in step 1) for 10 minutes using a standard vibrating sieve machine, and use standard sieves with mesh numbers of 70 and 160 to screen out mineral pigment powders with a particle size of 100-200 nm;

[0036] 3) Mix polydimethylsiloxane main agent (agent A) and polydimethylsiloxane curing agent (B agent) uniformly, the mass ratio is B:A=1:19.5, weigh the polydimethylsiloxane Put 0.7g of silicone-based mixed solution on a biological surface dish with a diameter of 6cm, and use a spin coater to perform spin coating treatment, and set the instrument parameters: the rotation time is 330s, the rotation speed is 200r / min, and the rotation acceleration is 100m / min 2 ;

[0037] 4) Put the polydimethylsiloxane mixture spin-coated in step ...

Embodiment 2

[0044] 1) To ensure that the mineral pigment is dry and free of impurities, use a mechanical pulverizer to crush the large particles of lapis lazuli natural mineral pigment into powder, and the crushing time is 1.1min;

[0045] 2) using a standard vibrating sieve machine to process the lapis lazuli pigment powder obtained in step 1) for 12 minutes, and using a standard sieve with a mesh number of 70 and 160 to screen out a mineral pigment powder with a particle size of 100-200nm;

[0046] 3) Mix polydimethylsiloxane main agent (agent A) and polydimethylsiloxane curing agent (B agent) uniformly, the mass ratio is B:A=1:20.5, weigh the polydimethylsiloxane Put 1 g of base siloxane mixed solution on a biological surface dish with a diameter of 6 cm, and use a spin coater to perform spin coating treatment, and set the instrument parameters: the spin time is 360s, the spin speed is 220r / min, and the spin acceleration is 120m / min 2 ;

[0047] 4) Put the polydimethylsiloxane mixture s...

Embodiment 3

[0054] 1) To ensure that the mineral pigment is dry and free of impurities, use a mechanical pulverizer to crush large particles of malachite natural mineral pigment into powder, and the crushing time is 1.05min;

[0055] 2) using a standard vibrating sieve machine to process the malachite pigment powder obtained in step 1) for 11 minutes, and using a standard sieve with a mesh number of 70 and 160 to screen out a mineral pigment powder with a particle size of 100-200 nm;

[0056] 3) Mix polydimethylsiloxane main agent (agent A) and polydimethylsiloxane curing agent (B agent) uniformly, the mass ratio is B:A=1:20, weigh polydimethylsiloxane Put 0.85g of base siloxane mixed solution on a biological surface dish with a diameter of 6cm, and use a spin coater to perform spin coating treatment, and set the instrument parameters: the spin time is 350s, the spin speed is 210r / min, and the spin acceleration is 110m / min 2 ;

[0057] 4) Put the polydimethylsiloxane mixture spin-coated ...

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Abstract

The invention relates to the field of pigments and discloses a method for testing the color difference of a natural mineral pigment in cooperation with colloidal water and polydimethylsiloxane, comprising: 1) pulverization of the natural mineral pigment; 2) screening of pigment powder particle size; 3) blending and spin coating of the polydimethylsiloxane; 4) vacuum polymerization of the polydimethylsiloxane; 5) modification of polydimethylsiloxane by dilute nitric acid; 6) blending of the colloidal water; 7) combination of the pigment colloidal water and the polydimethylsiloxane; 8) natural drying of the sample; and 9) color difference analysis. The method for testing the color difference of the natural mineral pigment in combination with colloidal water and polydimethylsiloxane in the invention can be used for the color difference detection of various natural mineral pigments, and is very important practical significance for the research of natural mineral pigments in China.

Description

technical field [0001] The invention relates to the field of pigments, in particular to a method for testing the color difference of natural mineral pigments in combination with colloidal alum water and polydimethylsiloxane. Background technique [0002] For pigments, color is its most important property. The performance of a pigment mainly depends on its color performance. In the field of color management, color difference testing is one of the most important performance tests for pigments. By performing a color difference test and detecting the values ​​of the pigment ΔL*, Δa*, Δb* and ΔE, the exact position of the color in the color space can be found, and the color performance of the pigment in practical applications can be known. [0003] Usually for color difference testing, it is necessary to use a spectrophotometer to detect pigment samples, and the pigments are generally loaded on a certain carrier, such as silk cloth, white paper, wood, slate or various printed ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N21/25
CPCG01N1/28G01N21/25
Inventor 彭志勤刘珉琦黄诗莹王晓云何宇杰王秉
Owner ZHEJIANG SCI-TECH UNIV
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