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Property Ranges of Polymers

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Property Ranges of Polymers

Melting onset (C)

Creep resistance (Mpa)

Vicat Temperature (C)

(mg/dm2.day)

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Property Ranges of Polymers

Property Profile of Polymeric Materials

A balance between the request profile and profile is

obtained by:

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Influencing Factors in polymer testing

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Influencing Factors in polymer testing

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Influencing Factors in polymer testing

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Types of Testing

Destructive testing is changes the dimensions or physical and structural integrity of the specimen. (It is essentially destroyed during the test)

e.g., Tensile, Compression, Shear and Rockwell Hardness Non-Destructive testing does not affect the structural

integrity of the sample. ( A measurement that does not effect the specimen in any way)

e.g., weighing, measurements etc.

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Stress Types

Normal : load perpendicular to cross-section

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Stress Types

Shear : load parallel to cross-section

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Strain: Intensity of Deformation

Strain = dl / lo

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Relating Stress and Strain

Stress = Youngs modulus x strain

Polymer Testing Classification

Impact Test

Impact test

Influencing factors on toughness

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Polymer testing

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Polymer testing

Links between molecules maintained

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Polymer testing

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Effect of time and temperature on mechanical properties

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Effect of time and temperature on mechanical properties

Segregation & degradation

Charpy Impact Test

Izod Impact Test