ISO 4664-2:2006

Name: ISO 4664-2:2006 — Rubber, vulcanized or thermoplastic — Determination of dynamic properties — Part 2: Torsion pendulum methods at low frequencies
SKU: ISO 4664-2:2006
Price: 25 EUR
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Rubber, vulcanized or thermoplastic — Determination of dynamic properties — Part 2: Torsion pendulum methods at low frequencies

Название (английский):

ISO 4664-2:2006

Rubber, vulcanized or thermoplastic — Determination of dynamic properties — Part 2: Torsion pendulum methods at low frequencies

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 12 октября 2006 г.
Издание:: ISO IS 4664 edition 1 version 1
ICS:: 83.060

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Язык документа:

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Описание (английский):

ISO 4664-2:2006 specifies methods, using a torsion pendulum, of determining the dynamic properties in shear, that is the shear modulus and mechanical damping, of vulcanized or thermoplastic rubbers over a wide temperature range at low frequencies in the range 0,1 Hz to 10 Hz and at comparatively low strains of less than 5 x 10-4.

Abstract

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Упомянутые в описании и другие стандарты ISO

Overview

ISO 4664-2:2006 specifies torsion-pendulum methods for measuring the dynamic shear properties of vulcanized and thermoplastic rubbers at low frequencies. The standard covers determination of the elastic shear modulus (in-phase modulus) and mechanical damping (loss behavior) over a wide temperature range at frequencies from 0.1 Hz to 10 Hz and at very small shear strains (≤ 5 × 10⁻⁴). It is principally intended to identify viscoelastic transitions (temperature-dependent changes in modulus and damping), rather than to provide highly accurate absolute modulus values.

Key topics and technical requirements

Test principle: Torsion pendulum using a strip test piece clamped at both ends; the test piece forms the elastic member of the pendulum.

Three test methods:

Method A: Inertial member supported by the test piece (free damped oscillation).
Method B: Inertial member supported by a fine suspension wire (free damped oscillation).
Method C: Forced (maintained) oscillation using electromagnetic or equivalent compensation to hold constant amplitude.

Specimen dimensions & preparation: Typical strip thickness (1.0 ± 0.2) mm; width 5–11 mm (10 mm preferred); length 40–120 mm to fit clamps. Test pieces prepared and conditioned per ISO 23529.

Temperature control: Thermostatted chamber (gaseous medium) with control typically between −100 °C and +200 °C; maintain within ±1 °C. Measurements at maximum intervals of (10 ± 1) °C, closer in transition regions.

Measurement accuracy & limits:

Frequency measurement: ±1% in elastic region (±5% in transition).
Deformation amplitude measurement: ±1%.
Restoring torque of suspension wire ≤25% of combined restoring torque.
Minimum of three test pieces per test; condition at standard laboratory temperature for ≥3 hours before testing.

Strain limitation: Shear strain must not exceed 5 × 10⁻⁴ (keep torsion angles very small).

Applications

Characterising temperature-dependent viscoelastic transitions (glass transition, damping peaks) in rubber compounds.

R&D and formulation screening for vulcanized and thermoplastic elastomers.

Comparative quality-control testing of rubber batches or formulations.

Supporting material selection for vibration isolation, seals, damping components, and low-frequency dynamic applications.

Related standards

ISO 4664-1: Rubber - Determination of dynamic properties - Part 1: General guidance.

ISO 23529: Rubber - General procedures for preparing and conditioning test pieces for physical test methods.

Keywords: ISO 4664-2:2006, torsion pendulum, dynamic properties, shear modulus, mechanical damping, low-frequency rubber testing, vulcanized rubber, thermoplastic rubber.

ISO 4664-2:2006

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications

Who should use this standard

Related standards

Технические детали

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