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Method for measuring refractory stability of insoluble sulfur in rubber

A measurement method and a thermally stable technology, applied in the direction of removing a certain component, such as weighing, etc., can solve the problems of temperature transfer error, temperature control not meeting requirements, and uneven oven temperature.

Inactive Publication Date: 2004-09-01
赵水斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the error of the results detected by this glassware method is ±2%. Uniform; (3) The controllable temperature of the oven requires ±1°C, and the temperature control of the oven used cannot meet the requirements (the temperature control range generally used is ±2°C); (4) The laboratory staff is operating error in
Therefore, the above four reasons are the fundamental reasons why the test results cannot be reproduced.

Method used

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  • Method for measuring refractory stability of insoluble sulfur in rubber
  • Method for measuring refractory stability of insoluble sulfur in rubber
  • Method for measuring refractory stability of insoluble sulfur in rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Keep the constant temperature of the oven at 105°C±1°C, put 10ml of liquid paraffin in a 40ml beaker, pour the liquid paraffin into the enamel plate, and submerge the paraffin in the 40ml beaker, and then put the beaker into the liquid Place in a paraffin enamel dish and place in a preheated oven for 1 hour.

[0041] (2) Carefully weigh 1 gram of insoluble sulfur IFS-6033 sample and place it on oil-resistant glass paper, weighing to an accuracy of 0.001 gram; record the sample weight as m4.

[0042] (3) Take out the beaker that has been preheated for 1 hour, and put the weighed sample m 4 Put it into a 40ml beaker, shake well; then put it into a constant temperature oven, take it out after 15 minutes, gradually lower the temperature, put the beaker containing the sample in water <10°C, and cool it for 25 minutes.

[0043] (4) Weigh two 30ml G 3The weight of the sand core crucible is weighed to an accuracy of 0.001 gram, recorded as M1 and M1′ respectively, and the...

Embodiment 2

[0051] Assay method is the same as in Example 1.

[0052] Manufacturer

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Abstract

A method for measuring the thermal stability of insoluble sulfur used for rubber features that the insoluble sulfur to be measured is put in the atoleine contained in a measuring glass to simulate the vulcanization process of rubber. The atoleine can fully transfer the heat, resulting in the precision (absolute deviation value not greater than 0.5%).

Description

technical field [0001] The invention belongs to chemical analysis and test methods, in particular to a method for measuring the heat resistance stability value of insoluble sulfur in rubber. Background technique [0002] Since the 1950s, the United States, the United Kingdom, Germany, Japan and other countries have gradually carried out research on insoluble sulfur (also known as: polymeric sulfur), that is, polymers that are insoluble in carbon disulfide, and have applied insoluble sulfur to rubber since the 1970s. In the vulcanization process of radial tires, the blooming of steel wires and cords and the migration of rubber layers are avoided, and the service life of tires is increased by 2-3 times. The application of radial tires in European countries has reached about 90%. my country introduced radial tire production lines in the 1980s. The National Sulfur and Sulfuric Acid Quality Inspection Center and relevant experts formulated the HG / T2525-93...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/04
Inventor 赵水斌
Owner 赵水斌