HG/T 2107-1991 Determination of acetone soluble matter in acid-resistant phenolic plastics HG/T2107-1991 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Determination of Acetone Soluble Matter of Acid-Resistant Phenolic Plastics Subject Content and Scope of Application
H::/T2107-91
This standard specifies the principle, test steps and result calculation method for determination of acetone soluble matter in acid-resistant phenolic plastics. This standard is applicable to the determination of acetone soluble matter in unripened acid-resistant phenolic plastics (soft boards). 2 Principle
Heat and extract the acetone soluble matter in the quantitative fine granular sample, dry the residue and weigh it, and calculate the acetone soluble matter. 3 Reagents
Acetone: analytical grade.
4.1 Analytical balance: accurate to 0.001
4.2 Extractor: Conical flask with ground-mouth condenser and siphon cup, as shown in the figure (filter paper can be used instead of single-layer extraction tube) Frosted here
1-Snake condenser: 2-Siphon cup:
3-Conical flask (heat-resistant glass)
Approved by the Ministry of Chemical Industry of the People's Republic of China on August 19, 1991, and implemented on January 1, 1992
4.3 Water bath (or constant temperature water bath).
HIG/T2107-
4.4 Weighing bottle with cover: 50mm in diameter, 30mm in height, 4.5 Oven: can be controlled at 100~105℃, 4.6 Dryer
Sample preparation
Cut the sample into 1~2mm particles
6: Test steps
6.1 Test two samples at the same time,
6.2 Place the filter paper in the weighing bottle, bake it in an oven at 100~105℃ for 2h, take it out and put it in the dryer to cool to room temperature, cover the weighing bottle and weigh it (accurate to 0.001g).6.3 Weigh 1~2g of sample (accurate to 0.001g), put it in the filter paper, and tie it tightly with thread to make a sample bag. 6.4 Place the sample bag in the siphon cup of the extractor, and tightly assemble the siphon cup of the condenser and the flask with 50 mL of acetone added as shown in the figure. 6.5 Heat it in a water bath, adjust the heating temperature, and control the siphon speed to 25-30 times per hour. Extract continuously for 6 hours, take out the sample bag, remove the tie wire, place it in the weighing bottle, and bake it in a 100-105℃ oven to constant weight. Take the sample and put it in a desiccator and cool it to room temperature, then weigh it (accurate to 0.001g). Calculate the acetone soluble content (in terms of resin%) according to formula (1): Acetone soluble matter Wherein: m - mass of sample, g; - mass of residue after extraction, g; d - percentage of resin in sample, % (1) The arithmetic mean of the values ​​obtained from the two tests is taken as the acetone soluble content of the tested sample. The difference between the two values ​​should not exceed 2.0% (absolute value), otherwise repeat the test.
8 Test report
The test report should include the following items:
Indicate that the test is carried out in accordance with this professional standard;
b, "the source, batch number, appearance and sample characteristics of the sample; c
The method of making the sample into particles;
The content of acetone soluble matter in each sample;wwW.bzxz.Net
The arithmetic mean of the values ​​obtained from two samples; the test date, the test personnel.
Standard broadcast exchange network mm.bzaosacoAdditional notes:
This standard was proposed by China National Chemical Equipment Corporation HG/T2107-91
This standard is under the jurisdiction of the Chemical Machinery Research Institute of the Ministry of Chemical Industry. This standard was drafted by Chongqing Synthetic Chemical Plant and the Non-metallic Materials and Equipment Monitoring Center of the Ministry of Chemical Industry. The main drafters of this standard are Xie Yang, Han Peiyu. Standard Control Network.cw.baogo.cm People's Republic of China
Chemical Industry Standard
Acid-resistant phenolic plastic determination method
HG/T2106~2107-91
Editor Chemical Industry Standard Editorial Department
(Standardization Research Institute of the Ministry of Chemical Industry)
Postal Code: 100013.
Printing Chemical Industry Standardization Research Institute
Copyright reserved. No reproduction allowed
Format 880×12301/16
Number of characters on a sheet 9000
First edition in May 1992
First printing in May 1992
Number of copies 1300
Standard Investment Network.cmio6o.com
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.