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Method for conveniently detecting dispersity of cobalt salt in sizing material

A technology of dispersibility and sizing material, which is applied in the field of convenient detection of cobalt salt dispersibility in sizing materials, can solve the problems of large fluctuation of test results, low reference and high cost of precision instruments, and saves experiment cost, time, and accurate results. High-quality, low-cost effects

Pending Publication Date: 2021-10-26
SHENYANG HEPING ZIWUXIAN TIRE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly two detection methods for the adhesion between the rubber material and the steel cord. One detection method is as follows: figure 1 As shown, the method is to use a tensile machine to draw the steel cord 6 from one end of the rubber material 7 at a constant speed, and analyze the adhesion between the rubber material 7 and the steel cord 6 by collecting the data when the tensile machine is working. In the method, the extraction method of the steel cord is inconsistent with the performance of the peeling of the tire U-shaped rubber and the steel cord, which cannot characterize the rubber problem well; another detection method is to use energy spectroscopy to analyze the cobalt in the rubber. However, because the content of cobalt in the glue is very small, accounting for only about 0.3% of the total weight of the formula, the test results fluctuate greatly, and the reference is low. For example, 30 samples from the same car are used to analyze the The content of cobalt in the rubber is tested, and the test results are as follows figure 2 shown by figure 2 It can be seen that the detection data fluctuates greatly, and the reference of the data detected by this method is low, and more sophisticated instruments are needed for analysis, but the cost of precision instruments is too high to realize field application

Method used

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  • Method for conveniently detecting dispersity of cobalt salt in sizing material
  • Method for conveniently detecting dispersity of cobalt salt in sizing material
  • Method for conveniently detecting dispersity of cobalt salt in sizing material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The method provided in this specific example to facilitate the detection of the dispersion of cobalt salt in the rubber will directly reflect the adhesion between the steel cord and the rubber according to the dispersion of the cobalt salt. The better the dispersion, the better the adhesion effect The mechanism of the method is to detect the adhesion between the steel cord and the rubber by directly peeling the steel cord from the surface of the rubber, and then reflect the dispersion of cobalt salt in the rubber.

[0036] Specifically, the method for facilitating the detection of cobalt salt dispersibility in the sizing material provided by this specific embodiment specifically includes the following steps:

[0037] (1) Grind the sample to be tested until the steel cord is looming on the surface of the rubber compound. Generally, the distance between the steel cord and the surface of the rubber compound is 0.05-0.5 mm, preferably 0.1 mm.

[0038] (2) Peel off the steel...

Embodiment 2

[0042] In this specific example, if image 3As shown, in order to make the sample to be tested better meet the requirements of the rubber and steel cord adhesion testing experiment, a sample making mold is specially made, and the sample making mold includes a mold plate 1, a cover plate and a positioning piece , the mold plate 1 is provided with a plurality of sample preparation grooves 2, and the mold plate 1 on the opposite sides of the sample preparation groove 2 is provided with a plurality of steel wire grooves 3, and the two opposite sides of the sample preparation groove 2 are located A plurality of steel wire grooves 3 are arranged in one-to-one correspondence and opposite to each other. The steel wire grooves 3 communicate with the outer end of the sample preparation groove 2 and the mold plate 1. This setting facilitates the insertion of steel wire cords. The cover plate is detachable through the positioning piece. It is connected to the side of the mold plate 1 prov...

Embodiment 3

[0056] Verification test of cobalt salt dispersion detection method in the sizing material of embodiment 3

[0057] Cobalt ions play the role of bonding in the rubber. Because of the high price and toxicity of cobalt, the content of cobalt in the rubber is generally very small, usually only accounting for about 0.3% of the total weight of the formula. However, if cobalt is in the rubber If the content is too small, the adhesive force of the rubber compound will be poor.

[0058] In this specific example, the cobalt salt dispersion detection method provided in Example 2 is used to detect two kinds of rubber materials with different cobalt contents, and to verify the feasibility of the cobalt salt dispersion detection method in the rubber materials. Specifically, two different cobalt content The specific components of the sizing material in parts by weight are as shown in Table 1, and the cobalt salt dispersion detection method provided in Example 2 is used to detect the two kin...

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Abstract

The invention discloses a method for conveniently detecting the dispersity of cobalt salt in a rubber material. The method comprises the following steps: (1) polishing a sample to be detected until the distance between a steel wire cord and the surface of the rubber material is 0.05-0.5 mm; and (2) stripping the steel wire cord along the polished surface of the rubber material through tension detection equipment, observing the surface state of the stripped steel wire cord and a tension value displayed by the tension detection equipment, if the tension value is greater than a preset value and the dew point of no rubber on the surface of the steel wire cord is less than 2, indicating that the adhesive force of the rubber material is qualified, otherwise, indicating that the adhesive force of the rubber material is unqualified. According to the method, the steel wire cord is stripped from the surface of the rubber material, the expression mode is consistent with that of stripping of the rubber material and the steel wire cord in the tire U-shaped explosion, and the rubber material problem can be well represented.

Description

technical field [0001] The invention belongs to the technical field of adhesive properties of rubber materials, and in particular relates to a method for conveniently detecting the dispersibility of cobalt salts in rubber materials. Background technique [0002] According to some quality problems in the current all-steel radial tire market, the U-shaped explosion problem still occupies a relatively large share. No glue, according to its appearance characteristics, it shows that the rubber material and the steel cord are not well bonded, and the dispersion of the cobalt salt will directly reflect the adhesion between the steel cord and the rubber material. The better the dispersion, the better the bonding effect. it is good. [0003] The adhesion between the rubber material and the steel cord, that is, the dispersion of cobalt salt in the material, is the main performance index of the carcass and belt layer of the skeleton material. At present, there are mainly two detectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 孔繁奇李彦玲于森
Owner SHENYANG HEPING ZIWUXIAN TIRE MFG CO LTD
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