Method for testing dynamic adhesion property of vulcanized rubber/steel wire cord

A technology of steel cord and vulcanized rubber, which is applied in the field of dynamic fatigue testing, can solve the problems of hindering the research progress of fatigue of composite materials, complex failure mechanism of composite materials, and large dispersion of test data, so as to shorten the test period, wide application range, and easy The effect of data collection

Inactive Publication Date: 2013-04-10
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in view of the fact that the fatigue test has many difficulties in specimen clamping, load application, data tracking and recording, etc., coupled with the characteristics of long fatigue cycle and large dispersion of test data, and the obvious hysteresis viscoelasticity of rubber leads to the compounding of vulcanized rubber / steel cord The complexity of material failure mechanism, theoretical difficulties and obstacles in experimental technology have slowed the progress of fatigue research on composite materials.

Method used

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  • Method for testing dynamic adhesion property of vulcanized rubber/steel wire cord
  • Method for testing dynamic adhesion property of vulcanized rubber/steel wire cord
  • Method for testing dynamic adhesion property of vulcanized rubber/steel wire cord

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. According to the formula NR 100phr, carbon black N326 55phr, white carbon black 10phr, zinc oxide 8.0phr, stearic acid 1.0phr, CZ 1.2phr, insoluble sulfur 5.0phr, other 20.0phr weigh the experimental raw materials; use alcohol for copper plating Steel wires (3+8×0.33HT) were surface treated, dried and sealed for storage.

[0036] 2. Use an internal mixer for mixing, set the initial speed at 55rpm, and the initial temperature at 60°C. First, add NR and knead for 2 minutes. When the torque curve changes in the horizontal direction, add small materials to the internal mixer for mixing. For 3 minutes, when the torque curve changes in the horizontal direction, add carbon black N326 and white carbon black, stop mixing when the torque curve of the mixing curve is level, and discharge the glue to obtain the masterbatch; continue mixing on the open mill, add For CZ, insoluble sulfur, etc., cut and turn 4 times from left to right, thin pass 5 times, remove the sheet, cool and ...

Embodiment 2

[0041] Example 2 has the same steps as Example 1, but the difference is that in step 4, the tensile variation is 8.0mm (about 6% strain), and the measured adhesive force is 878N.

Embodiment 3

[0043] Example 3 has the same steps as Example 1, but the difference is that in step 4, the stretching variable is 0.0mm, the reciprocating stroke is 76mm, and the measured adhesive force is 1030N.

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Abstract

The invention relates to a method for testing the dynamic adhesion property of a vulcanized rubber / steel wire cord. The method can be used for determining the anti-fatigue property of a vulcanized rubber / steel wire cord composite material under different tensile deformations, reciprocating strokes, fatigue cycles, fatigue frequencies and temperatures, determining the change of the adhesion strength under different fatigue conditions via an electronic tension tester, and inspecting the evolvement rule of the dynamic adhesion property of the vulcanized rubber / steel wire cord. The method is simple and reliable, low in investment, high in efficiency and good in repeatability. The method disclosed by the invention is mainly applied to the field of the vulcanized rubber / steel wire cord composite material which are used for tires, conveying belts and the like, also can be used for evaluating the dynamic adhesion properties of a rubber / fibre cord and a rubber / single steel wire, and especially can be used for simulating the service environment of the tire carcass rubber / steel wire cord during the running process of a tire well, so that a reference for designing a safe, durable and high-performance tire and predicating the service life of the tire is provided.

Description

[0001] technical field [0002] The invention relates to the field of vulcanized rubber / steel cord composite materials such as tires and conveyor belts, and is especially suitable for dynamic fatigue testing of carcass rubber / steel cords of all-steel radial tires. The vulcanized rubber / steel cord is characterized by measuring the bonding strength after dynamic fatigue Dynamic bonding properties of cords to predict fatigue life of vulcanized rubber / steel cord bonds during tire running. This method can also be used to evaluate the dynamic bonding performance of rubber / fiber cord and rubber / single steel wire. Background technique [0003] With the rapid development of the automobile industry, in order to meet consumers' needs for the improvement of the safety, comfort and economy of radial tires, since the 1970s, steel cords have been used as important skeleton materials for tire carcass and belt layers. . Due to the large deformation, low elastic modulus and obvious viscoela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
Inventor 史新妍马明强
Owner QINGDAO UNIV OF SCI & TECH
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