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Evidence Guide: PMBTECH401 - Predict polymer properties and characteristics

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

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PMBTECH401 - Predict polymer properties and characteristics

What evidence can you provide to prove your understanding of each of the following citeria?

Predict the impact of processing conditions on polymer properties

  1. Predict property changes due to molecular weight and temperature
  2. Identify the glass transition temperature and melting point relative to ambient temperature
  3. Describe the morphological changes occurring to polymers as the temperature is raised to typical moulding conditions
  4. Describe the effect of cooling rate on polymer morphology
  5. Predict potential product dimension/shape changes due to internal stresses resulting from molecular orientation
  6. Determine the affect of post-mould annealing on the degree of crystallisation and crystal
Predict property changes due to molecular weight and temperature

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify the glass transition temperature and melting point relative to ambient temperature

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Describe the morphological changes occurring to polymers as the temperature is raised to typical moulding conditions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Describe the effect of cooling rate on polymer morphology

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Predict potential product dimension/shape changes due to internal stresses resulting from molecular orientation

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine the affect of post-mould annealing on the degree of crystallisation and crystal

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Predict physical properties of polymers from their morphology

  1. Predict the effects temperature, crystal size, degree of crystallisation, molecular orientation on physical properties
  2. Predict shrinkage from morphology
Predict the effects temperature, crystal size, degree of crystallisation, molecular orientation on physical properties

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Predict shrinkage from morphology

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine likely physical failures of polymers

  1. Determine impact of physical use conditions on physical failure
  2. Determine impact of polymer characteristics on physical failure
Determine impact of physical use conditions on physical failure

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine impact of polymer characteristics on physical failure

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Organise and interpret polymer tests

  1. Describe melt flow properties from flow data
  2. Choose appropriate test type to measure desired criteria
  3. Specify relevant standard test method
  4. Interpret test result, making allowance for possible variations in test
Describe melt flow properties from flow data

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Choose appropriate test type to measure desired criteria

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Specify relevant standard test method

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Interpret test result, making allowance for possible variations in test

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Predict the impact of processing conditions on polymer properties

1.1

Predict property changes due to molecular weight and temperature

1.2

Identify the glass transition temperature and melting point relative to ambient temperature

1.3

Describe the morphological changes occurring to polymers as the temperature is raised to typical moulding conditions

1.4

Describe the effect of cooling rate on polymer morphology

1.5

Predict potential product dimension/shape changes due to internal stresses resulting from molecular orientation

1.6

Determine the affect of post-mould annealing on the degree of crystallisation and crystal

2

Predict physical properties of polymers from their morphology

2.1

Predict the effects temperature, crystal size, degree of crystallisation, molecular orientation on physical properties

2.2

Predict shrinkage from morphology

3

Determine likely physical failures of polymers

3.1

Determine impact of physical use conditions on physical failure

3.2

Determine impact of polymer characteristics on physical failure

4

Organise and interpret polymer tests

4.1

Describe melt flow properties from flow data

4.2

Choose appropriate test type to measure desired criteria

4.3

Specify relevant standard test method

4.4

Interpret test result, making allowance for possible variations in test

Required Skills and Knowledge

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Predict the impact of processing conditions on polymer properties

1.1

Predict property changes due to molecular weight and temperature

1.2

Identify the glass transition temperature and melting point relative to ambient temperature

1.3

Describe the morphological changes occurring to polymers as the temperature is raised to typical moulding conditions

1.4

Describe the effect of cooling rate on polymer morphology

1.5

Predict potential product dimension/shape changes due to internal stresses resulting from molecular orientation

1.6

Determine the affect of post-mould annealing on the degree of crystallisation and crystal

2

Predict physical properties of polymers from their morphology

2.1

Predict the effects temperature, crystal size, degree of crystallisation, molecular orientation on physical properties

2.2

Predict shrinkage from morphology

3

Determine likely physical failures of polymers

3.1

Determine impact of physical use conditions on physical failure

3.2

Determine impact of polymer characteristics on physical failure

4

Organise and interpret polymer tests

4.1

Describe melt flow properties from flow data

4.2

Choose appropriate test type to measure desired criteria

4.3

Specify relevant standard test method

4.4

Interpret test result, making allowance for possible variations in test

relevant to and satisfy the requirements of the elements and performance criteria and demonstrate the ability to:

read and interpret technical reports and specifications, phase diagrams and standard test methods

predict polymer properties in relation to:

polymer morphology

polymer phase change

processing conditions

predict the impact of use conditions and polymer characteristics on physical failure of polymers

organise tests

record and interpret test results.

Must provide evidence that demonstrates knowledge relevant to their job sufficient to fulfil their job role, including knowledge of:

function of equipment and stages of manufacturing process in at least one (1) method/field of polymer manufacturing

polymer morphology using phase diagrams

properties of polymers in relation to their morphology

physical failure in polymers

polymer materials test methods and property data

changes in properties and variations in test data

changes in physical properties due to compounding, processing or environmental conditions

organisation procedures relevant to the work environment/job role

hierarchy of control

hazards that may arise in the job/work environment and:

their possible causes

potential consequences

appropriate risk controls.

Range Statement

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

Regulatory framework

The latest version of all legislation, regulations, industry codes of practice and Australian/international standards, or the version specified by the local regulatory authority, must be used.

Applicable legislation, regulations, standards and codes of practice include:

health, safety and environmental (HSE) legislation, regulations and codes of practice relevant to the workplace, manual handling and hazardous materials

Australian/international standards relevant to the materials being used and products being made

any relevant licence and certification requirements.

All operations to which this unit applies are subject to stringent HSE requirements, which may be imposed through state/territory or federal legislation, and these must not be compromised at any time. Where there is an apparent conflict between performance criteria and such requirements the legislative requirements take precedence.

Procedures

All operations must be performed in accordance with relevant procedures.

Procedures are written, verbal, visual, computer-based or in some other form, and include one or any combination of:

technical specifications

technical drawings

emergency procedures

work instructions

standard operating procedures (SOPs)

safe work method statements (SWMS)

formulas/recipes

batch sheets

temporary instructions

any similar instructions provided for the smooth running of the plant.

Hazards

Hazards must be identified and controlled. Identifying hazards requires consideration of:

hazardous products and materials

vapours or other atmospheric hazards

interaction of polymers, additives and other materials with process variables

other hazards that might arise.