Method for detecting viscosity of emulsion paint and method for measuring temperature-viscosity correction factor
A technology of correction coefficient and measurement method, which is applied in the direction of measuring devices, flow characteristics, instruments, etc., can solve problems such as time-consuming, and achieve the effect of shortening and reducing time
Inactive Publication Date: 2011-06-15
NIPPON PAINT CHINA
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In actual operation, although the standard temperature for viscosity detection is defaulted to 25°C for convenience, it still takes a certain amount of time to adjust the sample temperature to the standard state under certain conditions.
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[0019] In the following examples, the viscosity is based on Krebs (KREBS) (KU) as the unit, and the Stormer viscometer is used as the detection instrument. The latex paint selected below belongs to medium viscosity architectural coatings, and is selected to be more representative The Meideli M600 (product model) was used as the test sample, and the temperature was adjusted by a water bath, and the viscosity values of the samples at each temperature point were tested for 10 batches of samples at a unit of 1 °C. The obtained data are shown in Table 1.
[0020]
[0021]
[0022] Table 1 temperature-viscosity table (Midley M600 product)
[0023] temperature °C
30℃
31℃
33℃
35℃
37℃
40℃
45℃
1
104.2
103.6
103.0
101.1
99.7
98.1
96.2
2
106.2
106.0
105.2
105.2
104.2
102.8
99.6
[0024] 3
100.5
100.0
98.8
98.1
...
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The invention relates to a method for detecting the viscosity of an emulsion paint and a method for measuring a temperature-viscosity correction factor. The detection method comprises the following steps of: establishing a temperature-viscosity correction factor table according to the measuring method, wherein a temperature Ti and a temperature-viscosity correction factor Yi corresponding to Ti are recorded in the temperature-viscosity correction factor table, Bi / A=Yi, and A represents a viscosity value of the emulsion paint at the standard detection temperature; acquiring an emulsion paint sample in the production process of the emulsion paint, and measuring the temperature T of the emulsion paint sample; detecting the viscosity a of the emulsion paint sample at the temperature T; searching the temperature-viscosity correction factor Yi corresponding to the temperature Ti closest to the temperature T in the temperature-viscosity correction factor table; and calculating the viscosity value a / Yi of the emulsion paint sample at the standard temperature. The method can shorten time for adjusting the temperature of the sample so as to shorten the required time for the whole viscosity detection process.
Description
technical field [0001] The invention relates to a method for detecting the viscosity of architectural coatings. Background technique [0002] According to the industry standard GB / T9269-88.6.1.1, when measuring the viscosity of the paint, "...keep the temperature of the paint and the viscometer at 23±0.2°C". However, it is impossible for the coating samples obtained in actual production to be within the standard temperature range, and it is necessary to use cold / hot water baths or other means to make the sample temperature reach the detection temperature specified in the standard method. In actual operation, although the standard temperature for viscosity detection is defaulted to 25°C for convenience, it still takes a certain amount of time to adjust the sample temperature to the standard state under certain conditions. In order to confirm the inevitability of adjusting the temperature when detecting viscosity according to UDC667.6532.133 (industry standard) or GB / T9269, t...
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IPC IPC(8): G01N11/14
Inventor 程雷
Owner NIPPON PAINT CHINA