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Property Ranges of Polymers
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A specific property is usually represented by a
numeral value alongwith measurement unit
A specific property is usually represented by a
numeral value alongwith measurement unit
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Property Ranges of Polymers
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Property Ranges of Polymers
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Melting onset °C
Creep resistance Mpa
VicatTemperature °C
mg/dm
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.day
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Property Ranges of Polymers
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Property Profile of Polymeric Materials
A balance between the requestprofile and profile is
obtainedby:
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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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Cross section of barrier flight
To create correlations betweenmicrostructure andproperties
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Hybrid methods
Melt flow traces
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Types of Testing
• Destructive testing is changes the dimensions or physicaland structural integrity of the specimen. (It is essentiallydestroyed during the test)
e.g., Tensile, Compression, Shear and Rockwell Hardness
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• Non-Destructive testing does not affect the structuralintegrity 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 = Young’s modulus x strain
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ε
ε
Δε
σ
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Polymer Testing Classification
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Impact Test
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Impact test
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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
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Segregation & degradation
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