Shell powder is a powdery substance made from shells through crushing, sieving and other processes. Its main component is calcium carbonate, but also contains a small amount of minerals and trace elements. Shell powder is widely used in construction, cosmetics, food and other fields, and has good properties such as moisture absorption, heat preservation, purification and beauty.
Detection performance
The performance testing of shell powder needs to consider many factors to ensure its quality and use effect. The following is a detailed description of the performance parameters that need to be tested for shell powder, as shown in the following table:
| performance parameter | Test Methods | Testing Standard |
|---|---|---|
| Particle size distribution | Laser particle size analyzer measurement | GB/T 19077.1-2016 |
| specific surface area | Specific surface area analyzer measurement | GB/T 19587-2004 |
| chemical composition | chemical analysis | GB/T1679-2008 |
| hygroscopicity | Environmental humidity balance test | GB/T 2918-2018 |
| Ignition residue | burn test | GB/T 17431-2019 |
| Cleaness | Inspection methods such as visual inspection and microscope | none |
| Gloss | Gloss meter measurement | GB/T9754-2007 |
| chromatic aberration | Color Comparator Measurements | GB/T1543-2008 |
| pH value | pH meter measurement | GB/T9724-2011 |
Detection method
The following is a detailed description of the test methods for the performance parameters that need to be tested for shell powder:
Particle size distribution: The particle size distribution of shell powder is measured using a laser particle size analyzer to assess its particle size and uniformity of distribution.
Specific surface area: Use a specific surface area analyzer to measure the specific surface area of shell powder to evaluate its surface area size and adsorption performance.
Chemical composition: The chemical composition of the shell powder is tested using chemical analysis to determine the content of its main components, minerals and trace elements.
Hygroscopicity: Using the environmental humidity balance test, the shell powder is placed in different relative humidity environments, and its hygroscopicity is measured.
Residue on Ignition: Using the Ignition Test, shell powder is heated to high temperature to measure the mass and content of residue on ignition.
Clarity: Use visual inspection, microscope and other detection methods to detect the appearance, purity and impurities of shell powder.
Gloss: Use a gloss meter to measure the gloss of shell powder to evaluate the gloss effect of its surface and the stability of gloss.
Color Difference: Use a color comparator to measure the color difference of the shell powder to assess the consistency and accuracy of its color.
pH: Use a pH meter to measure the pH of shell powder to assess its acidity and stability.
Beichao reminds you: Different performance parameters may require different testing methods and equipment, and there may be some industry standards and specifications. For the performance testing of shell powder, the corresponding testing methods and standards should be selected according to actual needs.
