Testing device capable of simplifying volume expansion rate of rubber, and testing method of testing device

Abstract

The invention discloses a testing device capable of simplifying volume expansion rate of rubber. The testing device comprises a balance and a water tank, wherein the water tank is positioned below the balance; the balance consists of a balance body, a tray and hooks, partition plates are arranged in the water tank and divide the water tank into a plurality of sub water tank bodies, hooks are arranged below the balance body corresponding to the sub water tank bodies, and the tray is arranged above the balance body. The invention further discloses a method for testing the volume expansion rate of rubber by utilizing the testing device capable of simplifying volume expansion rate of rubber. The testing device and testing method have the advantages of being simple and convenient for testing procedures, simplified in testing equipment, and high in testing precision.

Description

technical field [0001] The invention relates to the technical field of expansion rate test, in particular to a test device and a test method for simplifying the volume expansion rate of rubber. Background technique [0002] At present, the volume expansion rate test of rubber needs to use a tray balance and a hydrostatic balance at the same time. The specific calculation method is: (1) First, weigh the mass m of the sample in a dry state on a tray balance 1 , and then test the mass m of the sample when immersed in water by hydrostatic balance 2 , according to F 浮 =ρ 液 wxya 排 = (m 1 -m 2 ) g to get the volume V of the sample 1 ; (2) After the sample is soaked in water for a period of time, the mass of the test sample m 3 , and then take out the sample, wipe the moisture on the surface, and weigh the mass m of the sample in the dry state on a tray balance 4 , again through the principle of Archimedes buoyancy, test the volume V of the sample at this time 2 , to obtain...

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Problems solved by technology

[0003] On the one hand, the above-mentioned test method requires the use of multiple devices, which has the disadvantages of large space occupation, high test cost, and poor operational flexibility; on the other hand, since one test can only test one sample, multiple It is cumbersome to calculate the average value after repeating the experiment many times. In addition, there is a linear relationship between the volume expansion rate of rubber and water temperature and other parameters. The traditional experimental method is not easy to ensure the uniformity of the test water temperature, and the test error is large.

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