A quantitative analysis method for fillers in coatings
A quantitative analysis and coating technology, applied in the preparation of material inspection products and test samples, etc., can solve problems such as large errors and inability to quantitative analysis, and achieve the effect of simple operation, accurate testing, and satisfying testing needs.
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Embodiment 1
[0077] Embodiment 1 provides a kind of quantitative analysis method of filler in coating, comprises the following steps at least:
[0078] a. Take the paint sample and use the organic solvent to ultrasonically assist extraction twice. During each extraction process, the volume ratio of the paint sample to the organic solvent is 1:0.3. The organic solvent is a mixture of carbon disulfide, ether and methanol, and the volume ratio of the mixture of carbon disulfide, ether and methanol is 3:0.5:1.2.
[0079] b. Add tetrahydrofuran to the insoluble matter A, ultrasonically disperse, and centrifuge to separate the insoluble solid B in it. The volume ratio of insoluble matter A to THF is 1:2;
[0080] c. Put the insoluble solid B into a vacuum drying oven, and dry it under vacuum at 50°C for 12 hours to obtain a mixed filler;
[0081] d. Grind the mixed filler into powder for qualitative and quantitative analysis.
[0082] The quantitative analysis method of filler in described coa...
Embodiment 2
[0096] The specific implementation method of embodiment 2 is the same as that of embodiment 1, and the difference is that the step a of the quantitative analysis method of the filler in the coating is to get the coating sample and use the organic solvent ultrasonic assisted extraction for 5 times, and the coating sample is extracted 5 times during each extraction process. The volume ratio of organic solvent and organic solvent is 1:0.3. The organic solvent is a mixture of carbon disulfide, ether and methanol, and the volume ratio of the mixture of carbon disulfide, ether and methanol is 3:0.5:1.2.
[0097] Concrete test method is the same as embodiment 1, and the content of talcum powder in filler is 20%; The content of calcium carbonate is 21%; The content of rutile type titanium dioxide type is 19%; The content of anatase type titanium dioxide is 19%; The content of beads was 21%.
Embodiment 3
[0099] The specific implementation method of embodiment 3 is the same as that of embodiment 1, and the difference is that the step a of the quantitative analysis method of the filler in the coating is to get the coating sample and use the organic solvent ultrasonic assisted extraction for 3 times, and the coating sample is extracted 3 times during each extraction process. The volume ratio of organic solvent and organic solvent is 1:0.7. The organic solvent is a mixture of carbon disulfide, ether and methanol, and the volume ratio of the mixture of carbon disulfide, ether and methanol is 3:0.4:1.6.
[0100] Concrete test method is the same as embodiment 1, and the content of talcum powder in filler is 20.7%; The content of calcium carbonate is 20.3%; The content of rutile type titanium dioxide type is 18.9%; The content of anatase type titanium dioxide is 18.9%; The content of beads was 21.2%.
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