Preparation method for cadmium-containing ceramic glaze standard sample

A technology for standard samples and ceramic glazes is applied in the field of preparation of standard samples of cadmium-containing ceramic glazes, which can solve problems such as unreported preparation methods, and achieve the effects of easy popularization and application, small fluctuation range and accurate quantitative analysis.

Inactive Publication Date: 2013-12-18
INTEGRATION TECH SERVICE CENT OF ZIBO ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the preparation of ceramic glaze standard samples is faced with difficult preparation processes such as firing system control and formula design, it is very challenging to prepare artificial standard samples of ceramic glaze that meet the requirements of the fixed value of standard samples.
At present, there is no report on the preparation method of cadmium-containing ceramic glaze standard samples for analysis and detection of cadmium content in ceramic glaze layers

Method used

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  • Preparation method for cadmium-containing ceramic glaze standard sample
  • Preparation method for cadmium-containing ceramic glaze standard sample
  • Preparation method for cadmium-containing ceramic glaze standard sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation of the cadmium-containing ceramic glaze standard sample with a cadmium content of 0.035% and an uncertainty of ±0.003% is as follows:

[0041] (1) Mixing: Weigh 0.01g of cadmium oxide into 24.00g of cadmium-free low-temperature transparent frit glaze, add 6.00g of microcrystalline cellulose and mix evenly to obtain a mixed material;

[0042] (2) Grinding: Wet ball mill the mixed material, balls and water at a mass ratio of 1:15:10 until the particle size is ≤74 μm, and dry in a drying oven at 105°C for 10 hours to obtain dry powder;

[0043] (3) Granulation: Spray 4% of the dry powder mass water into the dried dry powder and distribute evenly to obtain tableting raw materials;

[0044] (4) Molding: Take 10.0g of the tableting raw material and press it on a tableting machine under a pressure of 18MPa to form a disc-shaped sample with a diameter of 32mm and a thickness of 3mm, and dry it in an oven at 110°C for 10h to obtain a tableted sample;

[0045] (5...

Embodiment 2

[0066] The preparation of the cadmium-containing ceramic glaze standard sample with a cadmium content of 0.090% and an uncertainty of ±0.011% is the same as in Example 1, except that:

[0067] Add 0.03g cadmium sulfide as cadmium-containing reagent in step (1);

[0068] In step (5), the temperature is raised to 740° C. and the holding time is 2.5 hours.

[0069] The chemical composition of the transparent frit glaze not containing cadmium element in the present embodiment is: Na 2 O (7.49%), MgO (0.13%), Al 2 o 3 (11.42%), SiO 2 (45.15%), K 2 O(4.79%), CaO(6.68%), Fe 2 o 3 (0.49%), ZrO 2 (1.83%), BaO (4.84%), ZnO (14.47%), SO 3 (2.71%).

Embodiment 3

[0071] The preparation of a cadmium-containing ceramic glaze standard sample with a cadmium content of 0.351% and an uncertainty of ±0.012% is the same as in Example 1, except that:

[0072] In step (1), add 0.14g cadmium chloride as cadmium-containing reagent;

[0073] In step (5), the temperature was raised to 730° C. and then kept for 2 hours.

[0074] The chemical composition of the cadmium-free transparent frit glaze in this embodiment is the same as that in Embodiment 1.

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Abstract

The invention relates to a preparation method for a cadmium-containing ceramic glaze standard sample. The cadmium-containing ceramic glaze standard sample is obtained by the steps of mixing, grinding, granulating, forming and sintering. The cadmium-containing ceramic glaze standard sample prepared by the method disclosed by the invention has an accurate cadmium content fixed value; the fluctuation range of a cadmium content measurement result is small; the quantitative analysis of the cadmium in glaze of a ceramic product is accurate; the preparation steps are simple; the operation environment is friendly; the popularization and the application are facilitated. According to the preparation method, the problem, which exists in the ceramic industry for many years, that accurate quantitative analysis cannot be performed on the cadmium content of the glaze of the ceramic product and the problem of no standard sample or insufficient standard samples of the ceramic glaze to be detected can be solved; a powerful technical measure is provided for scientific detection and analysis of the cadmium content of a glaze layer of the ceramic product.

Description

technical field [0001] The invention relates to a method for preparing a standard sample of cadmium-containing ceramic glaze, which belongs to the technical field of measurement value transfer. Background technique [0002] In order to increase mechanical strength, surface gloss and add artistic decoration effect to daily-use ceramics, raw materials and colored glazes with cadmium components are often added. During use, heavy metal cadmium is easily dissolved when it encounters heat and acid. Cadmium element has bioaccumulation, and when absorbed by the human body, it will cause headache, chest tightness, cough, weakness, osteoporosis, hepatomegaly and other diseases. Therefore, cadmium glaze has become one of the restricted substances added in daily-use products such as ceramics, and the detection of cadmium content in the glaze layer of ceramics and glass products has also become one of the hot issues of research and attention in countries all over the world. Both the gla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28C04B41/86
Inventor 王乐张丽项海波倪荣军孙计赞许宏民王克刚
Owner INTEGRATION TECH SERVICE CENT OF ZIBO ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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