This standard specifies the methods and procedures for testing ceramic pigments. This standard applies to daily-use ceramic overglaze, inglaze and underglaze pigments, but does not apply to ceramic pigments containing fluorescent substances or with metallic luster. QB/T 2455.2-1999 Ceramic Pigment Testing Method QB/T2455.2-1999 Standard Download Decompression Password: www.bzxz.net

Classification No. Y20
Registration No. 4293—1999
Light Industry Standard of the People's Republic of China
QB/T 2455.2-99
Test Method for Ceramic Pigments
Published on October 14, 1999
State Bureau of Light Industry
Implementation on March 1, 2000
Q/T2455.2-99
Revised the standard 2BY24007-89 "Test Method for Ceramic Pigments" (this standard was issued by the State Light Industry Bureau in Document No. 1999112) and revised it under Q35199, and changed it in the following chapters: 1. The sample preparation method is changed to the test method, and the content of sample preparation is included in Method 1. The single shot determination of water content is revised to see 3.1. 1. The H determination time is shortened to 30m. The regular acid test method in the particle size determination is determined as the national standard Method implementation: The sample preparation for the measurement of lead and adjustment has been carried out in detail: This standard is proposed by the National Light Industry Administration Industry Management Department. This standard is under the jurisdiction of the National Ceramics Standardization Center. The drafting unit of this standard is: Sanmiao Chemical Industry Co., Ltd., China Light Industry Association Ceramics Research Institute. The main contributors to this standard are: Li Ping, Zhijian, Weng Minghua, Ye Chong, and Wang Yaoying. This standard is based on the industry standard QT357799 issued by the National Light Industry Administration: Ceramic Pigment Test Method.
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Light Industry Industry Standard of the People's Republic of China
Ceramic Pigment Test Method
This standard specifies the method and procedures for testing ceramic pigments. OB/T 2455.2—99Www.bzxZ.net
Replaces QB3571~
This standard is applicable to daily-use two-flow industrial, medium and low-end pigments, but not to ceramic pigments containing glazing substances and with golden luster.
2 Referenced standards
The provisions contained in the following foreign standards constitute the provisions of this standard through citation in this standard, and the versions shown in the 4 standard versions are all valid. All standards are reserved by you, and the parties using this standard should use the latest version of the following standards.
<3534-90 Daily-use porcelain needs to be doubled, pot-drop yield determination method GBT4739-1905E weak porcelain pigment chromaticity determination method GB15614—1995 Raw porcelain pigment light attenuation determination method Q1465-92 Method for determination of particle distribution of raw materials and materials "8/T3565-99 method for determination of moisture content of fired materials, mud and porcelain" 1 * This standard is in accordance with 2BY2090189.
3 Test method
3.1 Determination of moisture content
Moisture content QB3565 is determined.
32 Determination
Weigh 30.0g of two samples to be tested, add 150ml respectively under stirring, and evaporate the mixture. Continue to add 2min~5mm standard: temperature is kept at room temperature for 30min, filter each clear filter paper, filter with not less than 0ml of acidity, and make sure the pH is about 0.1: parallel determination flow. When the difference between the two streams is not greater than 0.3, take the average value to represent the determination result.
3.3 Measurement of particle size
The particle size shall be determined according to BT1465. In the inspection, the fineness of the test group is (0~100) Hrm. 3.4 Determination of powder color Mix the test pigment and the standard pigment with water or 1% ethanol respectively, apply them on the same plate, and then observe the color tone of the two. 3.5 Determination of loss amount 3.5.1 Preparation for test Approved by the State Bureau of Light Industry on October 14, 1999 Implementation of 200K0-03-01 Q8/T 2455.289 3.5.1.1 Take flat printing and screen printing products, and use the printing methods corresponding to their production processes to print on P.VB film paper, printing agent, etc. A small 1dm2 color block is pasted on a needle-free, sugar-shoulder flat plate of similar diameter. 3.5.1.2 Take 2 ± 0.1% of the powder shadow pigment and color it on a lead-free steel plate with the same diameter using the same coloring method as its production process. 3.5.1.3 Use a box-type self-protecting furnace or a baking kiln for baking. During the test, place the test piece in the furnace and use a refractory support to pad it 5cm above the bottom of the furnace: the test piece should not overlap too much, and the space between layers should not be less than 5cm. It takes 60min to 90min for the room temperature to rise to the appropriate temperature for the material. After reaching the firing temperature, keep it warm for 10min and let it cool naturally for use. 3.5.2 GB3534 method: The amount of lead and radiation dissolution in the liquid (ml/mL) is calculated according to the following formula:
Formula: F—the amount of lead and radiation dissolution per unit area, mm: X—the degree of dissolution in the immersion liquid, mL
s—the area of ​​the color block: dm2
3.6 Determination of color and color of the material
The material and the sample are fired on the same medium or body according to the method in 3.5.1, and then compared and observed. 3.7 Acid resistance test
Prepare the sample according to the method in 3.5.1 of this standard, fill the sample with a freshly prepared 4% (volume fraction) acetic acid solution (22!2) and soak for 24 hours, then wash with water and dry, and observe the color and color change of the color block. 3.8 Test for resistance to heat treatment
Prepare two test pieces according to the method in 3.5.1 of this standard. Fill the test pieces with 5% sodium carbonate solution and place them in a dryer at (60 ± 2) for 33 minutes (carbon tetrachloride, filter by filtration), and dry them with a precipitate to observe whether the color tone of the color block has any changes
3.S Thermal stability test
Prepare three test pieces according to the method in 3.5.1 of this standard. Place the test pieces in a temperature-resistant or heat-resistant chamber, heat the chamber to 180°C and keep the temperature for 10 minutes. Then take out the test pieces and quickly put them into rapid (20 ± 2)°C water. After 10 minutes, take them out and rub them. Use water of the same color as the color block to check whether the color block has cracks. TTKS.KAa
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