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Rheometer

A rheometer and rotational rheometer technology, applied in the field of rheometers, can solve problems such as hysteresis effect and spring nonlinearity, and achieve the effect of improving measurement quality

Pending Publication Date: 2019-09-10
安东帕有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only small deflections can be achieved with a fixed spring seat, since with larger deflections the spring exhibits non-linear behavior, hysteresis effects or influences beyond the cut-off point (Kipppunkt) of the spring, which lead to further measurements precision

Method used

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Embodiment Construction

[0031] exist figure 1 The rheometer shown in comprises two preferably modularly constructed and therefore replaceable units, which are arranged on a stand 20 with a support 24 and a support 25, in which the upper unit There is a rotational rheometer 100 and the unit below has a linear DM(T)A analysis unit 200 . Alternatively, it is also possible to arrange the linear DM(T)A analysis unit 200 on top and the rotational rheometer 100 close to the support.

[0032]The rotational rheometer 100 comprises a support 25 with a measuring motor chamber 17 , in which a measuring or drive motor 2 is arranged, which drives a measuring shaft 3 accommodated in a rotary air bearing 5 . The rotary air bearing 5 supports and centers the measuring shaft 3 or a support plate 30 connected thereto. Alternative support options, such as magnetic bearings, can likewise be used. The measuring part 1 a can be connected to the measuring shaft 3 via a coupling 4 .

[0033] The support 25 is mounted on ...

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Abstract

The present invention relates to a rheometer used for obtaining the measurement data of the rheology. The rheometer comprises a rotary rheometer having at least one unit for measuring and / or setting the normal force and / or rotational speed of a measuring section and / or a measuring shaft or the torque applied to the measuring shaft and / or the deflection angle of the measuring shaft, the rotary rheometer being combined with a linear DM(T)A-analysis unit having a regulating rod and at least one unit for measuring the tensile and / or compressive force and / or position and / or feed movement of the regulating rod, a viscoelastic sample to be examined being introduced into the measuring gap. The DM(T)A-analysis unit has a magnetically acting linear motor, and the DM(T)A-analysis unit has a magnetically acting gravity compensation unit, with which the gravity of the adjusting lever, the measuring part arranged on the adjusting lever, the rotor and the components fastened to the rotor can be compensated.

Description

technical field [0001] The invention relates to a rheometer according to the preamble of patent claim 1 . Background technique [0002] Different rheometers are known from the prior art, AT 515 219 A1 discloses, for example, rotational rheometers (rotating measuring motors, including torque determination and, if necessary, normal force determination) and linear motors (linear Measuring motor) which moves the underlying measuring part in height in the direction of the axis of rotation of the rheometer and defines or measures the displacement path. Both measuring motors include force measurement or force determination from the corresponding movement and current consumption of the motor. [0003] A rheometer is an instrument for determining the rheological properties of, in particular, viscoelastic samples. Known methods for determining rheological properties are, for example, rotational tests, creep tests, relaxation tests and oscillation tests. Typically, fluid samples are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/14
CPCG01N11/142F16C32/0406F16C32/0421H02K7/09G01N11/14F16C29/007F16C29/025F16C32/0423F16C2370/00G01N3/32G01N11/00G01N2203/0005G01N2203/0094G01N2011/0066
Inventor R.罗米尔H.科兹安M.克拉克
Owner 安东帕有限责任公司
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