Study of Thermal properties of polymer composites by Thermomechanical Analysis (TMA) (CAT#: STEM-ACT-0067-WXH)

Introduction

Polymer composites are a combination of polymers (i.e., thermosets or thermoplastics) with various continuous and noncontinuous reinforcements/fillers, principally added to polymers to improve the material performance. Polymer composites are increasingly being used in various engineering fields.
Examples are graphite/epoxy, Kevlar/epoxy, and boron/epoxy composites. Advanced composites are traditionally used in the aerospace industries, but these materials have now found applications in commercial industries as well.

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Principle Applications Procedure Materials Notes Related Products

Principle

Thermomechanical Analysis (TMA) is a technique in which a deformation of the sample under non-oscillating stress is monitored against time or temperature while the temperature of the sample, in a specified atmosphere, is programmed. The stress may be compression, tension, flexure or torsion.

Applications

It is an excellent tool for studying the expansion behavior and softening temperature of various materials such as thermoplastics, thermosets, elastomers, adhesives and coatings, films and fibers, metals, ceramics and composites.

Procedure

1. Place the specimen on the sample support
2. Place the temperature sensor as close to the specimen as possible
3. Determine the length of the specimen at the beginning of the experiment using a displacement transducer
4. Select the temperature range, rate of rise and fall, and applied load
5. Record the TMA curve as a function of temperature or time
6. Compare the blank curve with the TMA curve obtained from the experiment and perform the required calibration

Materials

• Thermomechanical Analyzers
• Suitable sample matrices: Thermoplastics, Thermosets, Elastomers, Ceramics, Metals, Adhesives

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