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A kind of preparation method of lead-containing ceramic glaze standard sample

A standard sample and ceramic glaze technology, which is applied in the field of preparation of lead-containing ceramic glaze standard samples, can solve the problems of high technical difficulty and unreported preparation methods, and achieve the effects of friendly operation environment, easy popularization and application, and simple preparation steps

Inactive Publication Date: 2015-09-16
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

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

Method used

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  • A kind of preparation method of lead-containing ceramic glaze standard sample
  • A kind of preparation method of lead-containing ceramic glaze standard sample
  • A kind of preparation method of lead-containing ceramic glaze standard sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation steps of lead-containing ceramic glaze standard samples with a lead content of 0.016% and an uncertainty of ±0.001% are as follows:

[0042] (1) Mixing: Weigh 0.004g of PbO4 into 24.00g of lead-free transparent frit glaze, add 6.00g of microcrystalline cellulose and mix evenly to obtain a mixed material;

[0043] (2) Grinding: Mix the mixed material, grinding balls and water at a mass ratio of 1:15:8 and ball mill until the particle size is ≤74 μm, and dry in a drying oven at 105°C for 8 hours to obtain a dry powder;

[0044] (3) Granulation: Spray 4% of the dry powder mass water into the dried dry powder and distribute evenly to obtain tableting raw materials;

[0045] (4) Molding: Take 10.0g of the tableting raw material and press it on a tableting machine under a pressure of 20MPa to form a disc-shaped sample with a diameter of 32mm and a thickness of 3mm, and dry it in an oven at 120°C for 8 hours to obtain a tableted sample;

[0046](5) Firing: Pla...

Embodiment 2

[0067] The preparation of the leaded ceramic glaze standard sample with a lead content of 0.097% and an uncertainty of ±0.001% is the same as in Example 1, except that:

[0068] In step (1), add 0.05g lead nitrate as lead-containing reagent;

[0069] The heat preservation time in step (5) is 1.5h.

[0070] The chemical composition of lead-free transparent frit glaze in the present embodiment is: Na 2 O(0.69%), MgO(1.12%), Al 2 o 3 (7.88%), SiO 2 (68.63%), K 2 O (2.16%), CaO (10.89%), Fe 2 o 3 (4.43%), ZrO 2 (0.19%), BaO (0.38%), ZnO (3.43%), SO 3 (0.20%).

Embodiment 3

[0072] The preparation steps of the lead-containing ceramic glaze layer standard sample with a lead content of 1.93% and an uncertainty of ±0.01% are as follows:

[0073] (1) Mixing: Weigh 0.54g of PbO4 into 23.50g of lead-free opalescent frit glaze, add 5.50g of microcrystalline cellulose and mix evenly to obtain a mixed material;

[0074] (2) Grinding: Mix the mixed material, balls and water at a mass ratio of 1:20:8 and ball mill until the particle size is ≤74 μm, and dry in a drying oven at 105°C for 8 hours to obtain dry powder;

[0075] (3) Granulation: Spray 4% of the dry powder mass water into the dried dry powder and distribute evenly to obtain tableting raw materials;

[0076] (4) Molding: Take 10.00g of the tableting raw material and press it on a tableting machine under a pressure of 20MPa to form a disc-shaped sample with a diameter of 32mm and a thickness of 3mm, and dry it in an oven at 120°C for 8 hours to obtain a tableted sample;

[0077] (5) Firing: Place t...

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Abstract

The invention relates to a preparation method of a lead-containing ceramic glaze standard sample. According to the method, the lead-containing ceramic glaze standard sample is prepared through the steps of mixing, grinding, pelleting, forming and firing. The lead-containing ceramic glaze standard sample prepared by adopting the preparation method is accurate in constant value of the content of lead; a measurement result of the content of the lead is smaller in fluctuation range; the lead in glaze layers of ceramic products can be quantitatively analyzed more accurately. The preparation method is simple in preparation steps, friendly to operating environment and easy to popularize and apply. By adopting the preparation method, the problems that the content of the lead in the glaze layers of the ceramic products can not be accurately and quantitatively analyzed and no standard samples of ceramic glaze to be tested exists or standard samples of the ceramic glaze to be tested are insufficient in the ceramic industry are solved, and a strong technical means is provided for scientific detection and analysis of the content of the lead in the glaze layers of the ceramic products.

Description

technical field [0001] The invention relates to a method for preparing a lead-containing ceramic glaze standard sample, and belongs to the technical field of measurement value transfer. Background technique [0002] To make porcelain impermeable and beautiful, it often needs to be glazed and colored. Lead glaze is widely used due to its advantages of excellent melting, good gloss, high elasticity and wide firing range. However, the lead in lead glaze is poisonous and harmful to people's health. It can affect various organs such as nerves, hematopoiesis, and digestion. What's more serious is that it affects the growth and intellectual development of infants and young children. In severe cases, it causes dementia, and the damage caused by lead is irreversible. Therefore, the detection of lead content in ceramic tableware is very important. Developed countries such as the United States, Canada, and the European Union regard the heavy metal lead content in ceramic exterior deco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
Inventor 王乐项海波张丽孙计赞倪荣军许宏民王克刚
Owner INTEGRATION TECH SERVICE CENT OF ZIBO ENTRY EXIT INSPECTION & QUARANTINE BUREAU