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Device and method for testing normal-temperature and high-temperature compression stress relaxation of rubber

A high-temperature compression and stress relaxation technology, applied in the direction of applying stable tension/pressure to test the strength of materials, to achieve the effects of improving work efficiency, avoiding errors, and avoiding uneven stress distribution

Inactive Publication Date: 2012-02-15
BEIHANG UNIV
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Problems solved by technology

[0005] In order to solve the problems existing in the rubber room temperature and high temperature compression stress relaxation test in the prior art, the present invention provides a device and method for rubber room temperature and high temperature compression stress relaxation test

Method used

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  • Device and method for testing normal-temperature and high-temperature compression stress relaxation of rubber
  • Device and method for testing normal-temperature and high-temperature compression stress relaxation of rubber
  • Device and method for testing normal-temperature and high-temperature compression stress relaxation of rubber

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Embodiment Construction

[0034] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0035] The invention provides a device with a pressure sensor for testing the compressive stress relaxation of rubber at room temperature and high temperature, such as figure 1 As shown, it mainly includes the following parts: lower plate 1 , limiter 2 , upper plate 3 , pressure sensor 4 , sensor lead 5 , indenter 6 and flange 7 .

[0036] like figure 1 As shown, the upper plate 3 is placed flat above the lower plate 1 , and the lower plate 1 and the upper plate 3 are fixed together by the left and right limiters 2 . The pressure sensor 4 is located between the lower plate 1 and the upper plate 3 , one end of the pressure sensor 4 is fixed at the center position of the downward face of the upper plate 3 , and the other end is fixed with a pressure head 6 . The pressure sensor 4 is connected with the external data display instrument through the sensor ...

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Abstract

The invention provides a device and a method for testing normal-temperature and high-temperature compression stress relaxation of rubber. The device mainly comprises an upper plate, a lower plate, a limiter, a pressure sensor, a pressure head and a flange. The upper plate is fixed to the lower plate through the limiter. The pressure sensor is fixed at a center position of the upper plate and is located between the upper plate and the lower plate. The pressure head is fixed at another end of the pressure sensor. A rubber sample is fixed at a center position of the lower plate by the flange and contacts with the pressure head. The method comprises the following steps of preparing an appropriate rubber sample, assembling the device, fixing exactly the appropriate rubber sample at the center of the lower plate, contacting the appropriate rubber sample with the pressure head, removing the flange, putting the device into an aging test box for an experiment, and after the experiment is finished, determining compression stress relaxation coefficients of the appropriate rubber sample. Through the device and the method, normal-temperature and high-temperature compression stress relaxation tests are realized; real-time monitoring of compression stress variation is realized; and the accuracy, the repeatability and the reproducibility of a life prediction result are guaranteed.

Description

Technical field [0001] The invention belongs to the technical field of rubber material testing, and specifically relates to an equipment and method for rubber compression stress relaxation testing at normal and high temperatures. Background technique [0002] Existing technology usually uses compression permanent deformation and compressive stress relaxation as characteristic indicators to predict the life of rubber materials. The existing technology measures the change of compressive stress of rubber under constant deformation at normal temperature and high temperature, that is, the rubber sample is compressed to produce a constant deformation, and the compressive stress relaxation of the sample is measured after aging at a certain temperature for different times, which provides information for the life evaluation of rubber materials. technical foundation. The compressive stress relaxation test equipment recorded in the national standard GB1685-82 of the People's Republic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/18
Inventor 丁美丽张卫方赵丽杨明远刘升旺唐庆云
Owner BEIHANG UNIV
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