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Elements and Performance Criteria

  1. Apply knowledge of polymers to surface coating properties
  2. Select resins for surface coatings
  3. Select additives for surface coatings
  4. Design a solvent system for surface coatings
  5. Select pigments for a surface coating

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, and include one or more of the following:

legislative requirements, including work health and safety (WHS)

industry codes of practice and guidelines

environmental regulations and guidelines

Australian and other standards

licence and certification requirements

All operations to which this unit applies are subject to stringent health, safety and environment (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 HSE requirements, the HSE requirements take precedence.

Hazards

Hazards include one or more of the following:

flammability and explosivity

hazardous products and materials

other hazards that might arise

Procedures

All operations must be performed in accordance with relevant procedures.

Procedures are written, verbal, visual, computer-based or in some other form, include one or more of the following:

work instructions

standard operating procedures (SOPs)

formulas/recipes

batch sheets

temporary instructions

any similar instructions provided for the smooth running of the plant


Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria ,and include the ability to:

evaluate resins, pigments and additives against specifications, including:

chemistry

structure

physical and chemical properties relevant to surface coating

modification reactions as relevant (e.g. alkyds)

impact on environment

benefits/costs

select materials for purpose

calculate the molecular weight of a polymer to determine the effects on the end product.


Knowledge Evidence

Evidence must be provided that demonstrates knowledge of:

characteristics and application of surface coating resins, including:

synthetic resins with drying oils

alkyd resins

modified alkyd resin

epoxy resins

saturated and unsaturated polyester resins

vinyl resin solutions

thermosetting acrylic resins

phenolic resins

characteristics and application of additives, including:

cellulose

nitrocellulose

cellulose esters

cellulose ethers

chemistry of raw materials

safety data sheets (SDS)

polymers used in surface coatings and their impact of the surface coating properties and applications

importance and impact of polymer functional groups

manufacturing techniques of alkyd resins

the effects of additives on the final properties of surface coatings

safety and environmental concerns in the use and handling of solvents

glass transition temperature of polymers and film forming mechanisms

the principles of emulsion polymerisation

the role and behaviour of solvents

the process of solvent evaporation used in formulating

the functions of pigments

reasons for the use of inorganic and organic pigments

key differences between organic and inorganic pigments

the performance properties of titanium dioxide (TiO2) pigments

the use of anti-corrosive pigments

the role and properties of extenders

overall, the reasons for the selection of raw materials when used in surface coatings

hierarchy of control

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

their possible causes

potential consequences

appropriate risk controls.