Rubber Material Torsion Testing Machine & Plastic Torsion Stiffness Testing Machine

Special torsion test equipment for rubber, plastic and polymer materials to measure torsional stiffness, torsional modulus and viscoelastic performance

Product Overview

This rubber and plastic torsion stiffness testing machine is developed for polymer materials such as rubber, elastomer, hard plastic, soft plastic and composite polymer. It adopts closed-loop servo control system with high-precision torque sensor and angle encoder. It can complete static torsion, torsional stiffness measurement, torsional modulus test, constant angle holding and torque relaxation test. The equipment can accurately capture the viscoelastic characteristics of rubber and plastic materials under torsional load. It is equipped with dedicated non-slip fixtures suitable for soft and brittle polymer samples. Optional temperature chamber can realize torsion stiffness test under high and low temperature conditions. Professional supporting software supports real-time torque-angle curve drawing, automatic calculation of torsional stiffness, shear modulus and attenuation data, and supports data storage and report export. It is widely applied in new material research, automotive rubber parts, plastic products, sealing parts, polymer raw material incoming inspection and third-party testing laboratories.

Applicable International Standards

The system is designed to comply with the following recognized testing standards:

• ISO 6721-2 — Plastics — Determination of dynamic mechanical properties — Torsion-pendulum method

• ISO 1431 — Rubber, vulcanized or thermoplastic — Resistance to ozone cracking

• ASTM D1043 — Standard Test Method for Stiffness Properties of Plastics by Torsion Test

• ASTM D5279 — Standard Test Method for Dynamic Mechanical Properties of Plastics in Torsion

Note: Specific compliance depends on model configuration, torque sensor selection, temperature chamber and fixture selection. Customized fixtures and test schemes for extra testing standards are available upon request.

Key Features

• Specialized for polymer materials — Optimized for low-stiffness rubber and plastic samples, suitable for viscoelastic torsion test.

• Modular torque configuration — Wide torque range 1 ~ 5000 N·m, replaceable sensors for different hardness polymer samples.

• High-precision measurement — High-resolution angle encoder and low-drift torque sensor to guarantee stiffness test accuracy.

• Multiple control modes — Support speed control, constant angle holding, constant torque loading and torque relaxation test.

• Special polymer fixtures — Anti-slip soft clamping jaws, avoid crushing or slipping of rubber and plastic specimens.

• Optional temperature chamber — Complete torsion stiffness test under high, low and constant temperature environments.

• Professional calculation software — Automatically calculate torsional stiffness, shear modulus and record viscoelastic attenuation curve.

• Complete safety protection — Over-torque, over-angle, overload and emergency stop protection.

• Custom report export — Test data and curves can be exported in multiple formats for laboratory filing and certification.

Technical Specifications

Specifications vary by model configuration, torque sensor selection and optional temperature chamber. Custom fixtures and special clamping sizes are available for rubber and plastic testing requirements.

Typical Applications

• Rubber & elastomer industry — Torsion stiffness and viscoelastic test of rubber blocks, shock absorption rubber and sealing rubber parts.

• Plastic products industry — Torsion stiffness test of hard plastic, soft plastic, plastic profiles and plastic structural parts.

• Automotive polymer components — Torsion performance inspection of rubber bushings, damping parts and plastic connectors.

• Polymer composite materials — Torsion modulus test of modified plastics and fiber reinforced polymer materials.

• Laboratories & third-party institutions — Standard torsional stiffness test, raw material verification and material research of polymer materials.