9. Testing and Evaluation of Plastics

Try these first

1. 1.

   What does the tensile strength test measure?

   Hint

   Think about how much force it can withstand before breaking.

2. 2.

   What is the purpose of the impact test?

   Hint

   Consider sudden or unexpected forces acting on a material.

3. 3.

   What does the tensile strength test measure?

   • Resistance to bending
   • Resistance to breaking under tension
   • Resistance to thermal deformation

   Hint

   Think of tensile as tension - breaking under a pulling force.

4. 4.

   Is the Vicat Softening Temperature the point at which plastic starts to deform?

   • True
   • False

   Hint

   Remember, Vicat and softening both relate to heat.

5. 5.

   Design a testing regime for a new plastic intended for outdoor furniture. Include at least three tests and justify their relevance.

   Hint

   Consider all environmental factors the furniture might face.

6. 6.

   Discuss how the results from thermal and chemical resistance tests might affect material selection for high-temperature piping systems.

   Hint

   Think about the conditions under which piping systems operate.