This standard specifies the method for determining the sizing degree of paper by liquid penetration method. This standard is applicable to the determination of the sizing degree of white paper. GB/T 5405-2002 Determination of the sizing degree of paper (liquid penetration method) GB/T5405-2002 Standard download decompression password: www.bzxz.net

GB/T5405—2002 This standard is a revision of GB/T54105—19856 Determination of Paper Sizing Degree. This standard will replace GB/T5405 from the date of implementation. This standard was proposed by China Light Industry Federation. In 1985, this standard was managed by the National Technical Committee for Standardization of Paper Industry, and the unit responsible for this standard was China Papermaking Research Institute and Exit Inspection and Quarantine Bureau. The drafters of this standard are Xuan Longde, Li Lanfen, Yu, and Hao Guolong. This standard was first issued in 1985. wwW.bzxz.Net
This standard is entrusted to the National Standardization Technical Committee of Grade Industrial Standardization for interpretation. 1
National Standard of the People's Republic of China
Determining the sizing value of paper (Liquid permcanee melhnd )
This standard specifies the method for determining the sizing value of paper by liquid permcanee melhnd. This standard is applicable to the determination of the sizing value of paper. 2 Referenced Standards
CB/T5405—2002
Substitute GB/T 5405-1985
The following standards contain provisions that constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were not all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards: GB/T 450-2002 Standard conditions for testing paper and paperboard samples (eg VIS0186:1994) GB/T 10739-2002 Standard conditions for testing paper, paperboard and pulp samples (eq VIS(187:1990) 3 Terms
This standard uses the following terms.
Sizing value
This standard specifically indicates the wave length required to pass through a paper sheet. It is used to evaluate the water resistance of paper sheets and is expressed in seconds. 4
According to the instrument and tester
: 1% ferric chloride solution: Dissolve 1.g of analytically pure ferric chloride in water and dilute to 1.2% thiothioate solution: Dissolve 2.g of analytically pure ammonium thiothioate in water and dilute to 100ml. 4.3 When the bottle is full and the dropper is tilted at an angle of 15°, each drop of liquid is 0.06ml. 4.4 Incubate the bottle.
4.5 Stopwatch.
5 Collection, treatment and preparation of samples
5.1 Sampling shall be carried out in accordance with GB/T450.
5.2 Carry out temperature treatment of the sample according to GB/110739. 5.3 Cut the treated sample into 10 pieces of 30mm×30mm samples, fold up the four sides of the sample to make a small box with a bottom of about 20m20mm. - half front side facing up, · half back side facing up 6 Test steps
6.1 The test should be carried out under the standard atmospheric conditions specified in GB/T 10739 6.2 Pour an appropriate amount of 2-aminothiocyanate solution into the culture medium, then float the small box on the surface of the ammonium thiocyanate solution, and at the same time, drop a drop of 1% ferric chloride solution about 1 cm from the bottom of the box, and start timing at the same time. When a red dot appears in the ferric chloride solution, stop timing. The time should be recorded accurately to 18. The recorded time is the glue application degree of the sample. During the operation, the dropper is tilted at an angle of about 15\, and each drop of liquid is 6 mL.
6.3 Repeat the operation of G.2 until a total of 10 samples on the front and back sides are measured. 7 Test report
The test report shall include the following items:
a) This standard number;
h) The sample number;
r) The atmospheric conditions of the test;
|) The arithmetic half-mean, maximum value, minimum value, standard deviation and coefficient of variation of the test results;
|e) The date and place of the test;
||The operation that does not comply with the provisions of this standard during the test.
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