Printer Friendly

Rotorless rotational shear vulcameter offers variable oscillation frequency.

The Visco-Elastograph is a rotorless rotational shear vulcameter with variable oscillation frequency and amplitude with an extremely fast temperature control and homogeneous temperature distribution in the closed reaction die.

The Visco-Elastograph can be operated in the following modes: Frequency sweep; amplitude sweep; temperature sweep; vulcanization; frequency and amplitude sweep with prior deflection; ramp test with deformation angle up to 90[degrees]; and relaxation test with deformation angle up to 90[degrees].

The Visco-Elastograph is used to determine the viscoelastic material behavior in a plasticized state during vulcanization and after vulcanization of the material sample. The torsional load is imposed on the sample by the rotational oscillation of the lower test die half. Torque and phase angle are recorded as a function of the test time.

The Visco-Elastograph is a tabletop device with integrated electronics. It features an internal PC for operation, program control and test data acquisition, with no mechanical settings required.

The lower sine shaped test die half can be operated in oscillating movements at a frequency of 0.01 up to 33 Hz, with an amplitude of [+ or -] 0.01[degrees] to [+ or -] 20[degrees]. The achievable deflection can be reduced with increasing frequency.

Manual setting of up to 20 steps is accomplished in the operation mode "manual sweep." Thereby, the deflection, the frequency and the duration of each step can be set individually.

Running with automatic frequency steps, the duration, deflection, starting and final frequency, as well as the amount of steps, can be set.

Goettfert

www.goettfert.com
COPYRIGHT 2006 Lippincott & Peto, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2006, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

Article Details
Printer friendly Cite/link Email Feedback
Title Annotation:Instruments
Publication:Rubber World
Date:Dec 22, 2006
Words:252
Previous Article:Video extensometer.
Next Article:Dynamic light scattering systems.


Related Articles
New rheometers & test instruments emerge at recent shows.
Flexible rheometers.
Oscillating rheometer. (Instrument).
Rheology software.
DMA of rubber in immersion environments.
Rheometers: which type is right for you? Capillary and torque rheometers are good for simulating processing conditions, troubleshooting, and QC. But...
Kyocera to Ship the CX3225SB - World's Smallest 4MHz Frequency Quartz Crystal Unit.
Rheological testing.
Overview of capillary rheometry--Part 2.

Terms of use | Privacy policy | Copyright © 2019 Farlex, Inc. | Feedback | For webmasters