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Plastics Plastics

Plastics - PowerPoint Presentation

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Uploaded On 2018-01-05

Plastics - PPT Presentation

There are many types of plastic with a variety of properties and uses They are split into two categories Thermoplastic can be reheated and reshaped after heating and forming Thermoset once heated and formed can not be reheated and reshaped as it will melt due to its molecular structur ID: 619938

hard stiff plastic strong stiff hard strong plastic electrical hdpe high furniture containers brittle resists ldpe insulator work good plastics pvc density

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Slide1

Plastics

There are many types of plastic with a variety of properties and uses

They are split into two categories

Thermoplastic

(can be reheated and reshaped after heating and forming)

Thermoset

(once heated and formed can not be re-heated and reshaped as it will melt due to its molecular structureSlide2

Thermoplastics and there uses

1.HIPS – High Impact Polystyrene

(Light but strong plastic)

school Project work, Radio controlled car body shells

2.HDPE - High Density Polyethylene – HDPE (strong stiff plastic) is commonly used for milk crates, safety equipment, milk jugs and detergent bottles.3.PVC - Polyvinyl Chloride – PVC (stiff hard wearing) is used for plastic pipes, water bottles, outdoor furniture, shrink-wrap, liquid detergent containers, and salad dressing containers.4.LDPE - Low Density Polyethylene – LDPE (softer and more flexible than HDPE) is often used for trash can liners, dry-cleaning bags, produce bags, and food storage containers.5.PP - Polypropylene – PP (High impact strength) is used for everything from garden furniture, indoor furniture, children's toys to drinking straws and bottle capsSlide3

Thermosetting plastics

and there uses

1.Polyester Resin (Fiberglass)

- Stiff, hard, brittle unless laminated, good electrical insulator, resists chemicals well. Used for casting and encapsulation, bonding of other materials, car bodies, boats.

2.Urea Formaldehyde - Stiff, hard, strong, brittle, good electrical insulator. Used for electrical fittings, handles and control knobs, adhesives.3.Melamine Formaldehyde - Stiff, hard, strong, resists some chemicals and stains. Used for Laminating work surfaces, electrical insulation, tableware.