5.2.2
Thermoforming Polymers
Thermoforming Polymers
Thermoforming Polymers
Thermoforming polymers can be reheated, reshaped, and recycled.
Acrylic (PMMA)
Acrylic (PMMA)
- Properties:
- Very clear, good optical quality.
- Very good thermal insulator and chemical insulator.
- Excellent resistance to weathering.
- Scratches easily.
- Brittle - snaps with pressure.
- Examples:
- Car headlights.
- Baths.
- Signs.
High impact polystyrene (HIPS)
High impact polystyrene (HIPS)
- Properties:
- Rigid.
- Cheaper polymer.
- Range of colours.
- Examples:
- Smoke detectors.
- Vacuum forming.
High-density polyethylene (HDPE)
High-density polyethylene (HDPE)
- Properties:
- Difficult to bend.
- Resists chemicals.
- Excellent strength-to-weight ratio (SWR).
- Good thermal and chemical insulator.
- Examples:
- Pop bottles.
- Buckets.
- Bowls.
- Pipes.
Polypropylene (PP)
Polypropylene (PP)
- Properties:
- Lightweight.
- Tough - withstands impact.
- Very good thermal and chemical insulator.
- Flexible.
- Good tensile strength - difficult to stretch.
- Example:
- Food packaging.
- Toys.
- Chair seats.
- Bottle tops.
Polyvinyl chloride (PVC)
Polyvinyl chloride (PVC)
- Properties:
- Tough - withstands impact.
- Weather resistant.
- Excellent tensile strength - difficult to stretch.
- Rigid.
- Examples:
- Drain pipes.
- Window frames.
- Guttering.
Polyethylene terephthalate (PET)
Polyethylene terephthalate (PET)
- Properties:
- Lightweight.
- Strong.
- Tough - withstands impact.
- Examples:
- Clothing.
- Clear pop bottles.
1Core Technical Principles
1.1New & Emerging Technologies
1.2Energy Generation & Storage
1.3Developments in New Materials
1.4Systems Approach to Designing
1.5Mechanical Devices
1.6Materials Categories
2Paper & Board: Specialist Technical Principles
2.1Selection of Materials
2.2Paper & Board: Forces & Stresses
2.3Paper & Board: Ecological & Social Footprint
2.4Paper & Board: Sources & Origins
2.5Paper & Board: Using Materials
2.6Paper & Board: Stock Forms, Types & Sizes
2.7Paper & Board: Scales of Production
2.8Paper & Board: Specialist Techniques & Processes
2.9Paper & Board: Surface Treatments & Finishes
3Timber: Specialist Technical Principles
3.1Timber: Selection of Materials
3.2Timber: Forces & Stresses
3.3Timber: Ecological & Social Footprint
3.4Timber: Sources & Origins
3.5Timber: Using Materials
3.6Timber: Stock Forms, Types & Sizes
3.7Timber: Scales of Production
3.8Timber: Specialist Techniques & Processes
3.9Timber: Surface Treatments & Finishes
4Metal: Specialist Technical Principles
4.1Metals: Selection of Materials
4.2Metals: Forces & Stresses
4.3Metals: Ecological & Social Footprint
4.4Metals: Sources & Origins
4.5Metals: Alloy-Based Materials
4.6Metals: Using Materials
4.7Metals: Scales of Production
4.8Metals: Specialist Techniques & Processes
4.9Metals: Quality Control
4.10Metals: Surface Treatments & Finishes
5Polymers: Specialist Technical Principles
5.1Polymers
5.2Polymer Categories
5.3Polymer Forms
5.4Polymer Production, Techniques & Quality Control
6Textiles: Specialist Technical Principles
6.1Textile Materials
6.2Selection of Materials
6.3Forces & Stresses
7Designing & Making Principles
7.1Investigation & Data
7.2Environmental, Social & Economic Challenges
7.3The Work of Others
7.4Design Strategies
7.5Communication of Design Ideas
7.6Prototype Development
7.7Selection of Materials
7.8Tolerances
7.9Material Management
7.10Specialist Equipment
7.11Specialist Techniques & Processes
Jump to other topics
1Core Technical Principles
1.1New & Emerging Technologies
1.2Energy Generation & Storage
1.3Developments in New Materials
1.4Systems Approach to Designing
1.5Mechanical Devices
1.6Materials Categories
2Paper & Board: Specialist Technical Principles
2.1Selection of Materials
2.2Paper & Board: Forces & Stresses
2.3Paper & Board: Ecological & Social Footprint
2.4Paper & Board: Sources & Origins
2.5Paper & Board: Using Materials
2.6Paper & Board: Stock Forms, Types & Sizes
2.7Paper & Board: Scales of Production
2.8Paper & Board: Specialist Techniques & Processes
2.9Paper & Board: Surface Treatments & Finishes
3Timber: Specialist Technical Principles
3.1Timber: Selection of Materials
3.2Timber: Forces & Stresses
3.3Timber: Ecological & Social Footprint
3.4Timber: Sources & Origins
3.5Timber: Using Materials
3.6Timber: Stock Forms, Types & Sizes
3.7Timber: Scales of Production
3.8Timber: Specialist Techniques & Processes
3.9Timber: Surface Treatments & Finishes
4Metal: Specialist Technical Principles
4.1Metals: Selection of Materials
4.2Metals: Forces & Stresses
4.3Metals: Ecological & Social Footprint
4.4Metals: Sources & Origins
4.5Metals: Alloy-Based Materials
4.6Metals: Using Materials
4.7Metals: Scales of Production
4.8Metals: Specialist Techniques & Processes
4.9Metals: Quality Control
4.10Metals: Surface Treatments & Finishes
5Polymers: Specialist Technical Principles
5.1Polymers
5.2Polymer Categories
5.3Polymer Forms
5.4Polymer Production, Techniques & Quality Control
6Textiles: Specialist Technical Principles
6.1Textile Materials
6.2Selection of Materials
6.3Forces & Stresses
7Designing & Making Principles
7.1Investigation & Data
7.2Environmental, Social & Economic Challenges
7.3The Work of Others
7.4Design Strategies
7.5Communication of Design Ideas
7.6Prototype Development
7.7Selection of Materials
7.8Tolerances
7.9Material Management
7.10Specialist Equipment
7.11Specialist Techniques & Processes
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