Rotational rheometer capable of testing normal stress

A rotational rheometer, normal stress technology, applied in the field of rheology testing, can solve problems such as inability to adjust, instrument damage, etc.

Inactive Publication Date: 2017-06-20
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the test starts, the distance between the two plates is fixed and cannot be adjusted
The disadvantages of this structure of rotational rheometer are:
Or some instruments can test the normal force, but due to the fixed distance between t...

Method used

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  • Rotational rheometer capable of testing normal stress

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Embodiment 1

[0013] Such as figure 1 Shown is Embodiment 1 of the present invention, a rotational rheometer capable of testing normal stress, including an upper shaft 1, an upper plate 2, a lower plate 3, a lower shaft 4, a steel ball 6, a horizontal pin 8 and a spring 5 , the upper plate 2 is set directly above the lower plate 3, one end of the upper shaft 1 is fixedly connected to the upper surface of the upper plate 2, the other end of the upper shaft 1 is fitted with a sleeve 7, and the sleeve 7 is provided with two axial Symmetrical sleeve through hole 71, the upper half of the upper shaft 1 is provided with an upper shaft through hole 11, the cross pin 8 runs through two sleeve through holes 71 and the upper shaft through hole 11, and the upper shaft through hole 11 and the sleeve The inner diameters of the through holes 71 are all greater than the outer diameters of the cross pins 8 (in order to match the deformation of the spring 5), there is a distance between the other end of the...

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PUM

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Abstract

The invention relates to the technical field of rheological measurement and particularly relates to a rotational rheometer capable of testing normal stress. The rotational rheometer disclosed by the invention is improved on the basis of a traditional rotational rheometer, and a spring is increased, so that an upper plate can make a small-amplitude axial movement during test, the axial displacement is tested, the normal force is calculated, and a testing principle of the traditional rotational rheology parameters is still applicable to the rotational rheometer disclosed by the invention. A torque sensor is arranged on a rotating shaft of the rheometer. The rheometer is controlled by software, and experimental data and curves can be recorded and processed by computer software.

Description

technical field [0001] The invention relates to the technical field of rheology testing, in particular to a rotational rheometer capable of testing normal stress. Background technique [0002] A traditional rotational rheometer generally consists of a fixed plate and a rotatable plate or cone. After the test starts, the distance between the two plates is fixed and cannot be adjusted. The disadvantages of this structure of rotational rheometer are: [0003] Since the distance between the two plates cannot be adjusted, if the normal stress of the material to be tested is too large, the test will be difficult. Because some rotational rheometer tests require that the normal stress is small (such as less than 1 Newton) to start the test. Or some instruments can test the normal force, but due to the fixed distance between the two plates, the larger normal force of the material pushes the two plates up and down, or pulls the two plates due to the shrinkage of the material (such ...

Claims

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Application Information

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IPC IPC(8): G01N11/14G01L7/02
CPCG01N11/14G01L7/02
Inventor 廖华勇刘春林陶国良
Owner CHANGZHOU UNIV
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