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Product Design > Polymers > Flashcards

Polymers Flashcards

1
Q

What is the thermoplastic?

A

A material which can be repeatedly re-shaped and reheated allowing it to be recycled off its initial use. The plastics have long linear chain molecules held by forces.

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2
Q

What is a thermosetting polymer?

A

Material which undergoes a chemical change where molecules form cross links. Thermostat polymers cannot be reheated and reshaped even at very high temperatures.

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3
Q

What is an elastomer?

A

A material which was room temperature can be deformed under pressure and then upon release of pressure will return its original shape. Last of us have weak bonds which allow them to stretch easily.

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4
Q

What are different types of polymer base sheet and film?

A

Foam board, fluted PP sheet, translucent PP sheet, Styrofoam, low density polyethylene sheet, plastic foam

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5
Q

What are properties of foam board?

A

Two layers of card with a foam middle core

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6
Q

What are uses of foam board?

A

Mood board backing as well as presentation boards and modelling

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7
Q

What are flutter pp sheets ?

A

Extracted sheets with integral flutes or corrugations which are relatively lightweight and easily bent along the flutes

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8
Q

What are the uses of fluted PP sheets?

A

Signs such as construction site signs as well as storage boxes

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9
Q

What are the properties of translucent polypropylene sheet?

A

Tough poly machine can be folded millions of time virtually impossible to tear and water resistant

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10
Q

Uses of translucent PP sheets

A

Packaging products folders as well as boxes

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11
Q

What are the properties and performance characteristics of Styrofoam?

A

They are dens can be cut and sanded with standard workshop tools

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12
Q

What are the uses of Styrofoam?

A

Product model link and formers for mouldings and laminating

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13
Q

What are the properties of low density polyethylene?

A

They are tough and available and then sheet form they can be transparent and have a good chemical resistant and flexible

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14
Q

What are the uses of low density polyethylene?

A

Food wrapping, air pillow packaging, bubble wrap as well as carrier bags

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15
Q

What are the uses of plastozate foam ?

A

They are tough flexible have a good impact of resistant and impermeable to liquids

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16
Q

What are the uses of plastozate foam ?

A

Protective packaging swimming floats, gym and exercise mats

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17
Q

What are the properties of cellular acetate?

A

They are transparent and tough and naturally by degrade

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18
Q

What are the uses of cellular acetate?

A

Packaging film and membranes and photographic film

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19
Q

What are the uses of polylactide?

A

They are transparent, tough and naturally by degradable

20
Q

What are the uses of polylactide?

A

By the gradable packaging film

21
Q

What are the properties of Ldpe ?

A

Tough , chemical resistant , weatherproof and available in translucent

  • safe working them is 65
    Thermoforming plastic
22
Q

What are the properties of high density polyethylene ?

A

Available in translucent and is weatherproof, tough and has a good chemical resistance
Themo forming plastic

23
Q

What are the properties ofpolypropylene ?

A

Available in translucent, good chemical resistance, tough , good fatigue resistance

Safe working temperature-100 degrees
Thermoforming plastic

24
Q

What are the properties of Hips ?

A

Hard , rigid , available in translucent, tough

Safe working temp is 70 degrees
Thermoforming plastic

25
Q

What are the properties of Abs ?

A

Tough , hard , available in opaque

Safe working temperature is 80 degrees
Thermoforming plastic

26
Q

What are the properties of pmma ?

A

Tough, hard, good chemical resistance, available in translucent.

Safe temperature is 95
Thermoforming plastic

27
Q

What are the properties of nylon ?

A

Tough , corrosion resistant, good temperate resistance , low coefficient of friction

Safe working temperature is 150

Thermoforming plastic

28
Q

What are the properties of rigid polyvinyl chloride ?

A

Rigid, tough, hard, good chemical resistance, good weathering

Safe working temperature- 95 degrees
Thermoforming plastic

29
Q

What are the properties of urea formaldehyde?

A

Hard , heat resistant , good electrical insulator, brittle

Thermo setting plastic

30
Q

Properties of Melamine formaldehyde ?

A

Hard , heat resistant, good chemical resistance , food safe

Thermosetting plastic

31
Q

What are the properties of polyester resin ?

A

Rigid , heat resistant, chemical resistant and brittle

32
Q

What are the properties of epoxy resin ?

A

Rigid , clear , hard , tough and chemical resistant
Thermosetting polymers

33
Q

What are the properties of natural rubber ?

A

High tensile strength, low elongation, good hardness , good cold resistance

34
Q

What are the properties of butadiene rubber ?

A

Tough, excellent wear resistance against friction , good thermal resistance

35
Q

What are the properties of neoprene ?

A

Good thermal resistance, toughness , good oil and chemical resistance, excellent weather resistance and electrical insulator

36
Q

What are the properties of silicone ?

A

Good flexibility at low temperatures , poor abrasion resistance, good thermal resistance to temperature esteemed , good lubricating qualities

37
Q

What are the two types of bio polymers ?

A

Natural and synthetic

38
Q

What are the negatives of using bio polymers ?

A
  • Produce methane gas when they decompose in landfill contributing to global warming
  • the require high temperatures to degrade and may leave toxic residues
  • natural bio polymers need land to grow the crops
  • they cannot be recycled and may contribute to theme throw away culture
39
Q

What type of polymer is corn starch polymer and what is its source ?

A

Natural Bio polymer , made from starch vegetables such as corn and potatoes

40
Q

What type of polymer is potatopak and what is its source ?

A

It is a natural biopolymer made from potato starch

41
Q

What type of polymer is biopol polymer and what is its source ?

A

Natural biopolymer made from bacteria grown in cultures. Additives to promote refraction

42
Q

What type of polymer is poly lactic acid polymer and what is its source ?

A

It is a synthetic bio polymer made from corn kernels or sugar cane , fermented to produce lactic acid which is synthesised

43
Q

What type of polymer is lactide polymer and what is its source ?

A

A synthetic bio polymer that is fullly compostable and water soluble.

44
Q

What type of polymer is glycolide polymer and what is its source ?

A

A synthetic bio polymer that is fully compostable

45
Q

What are the different types of refraction

A

Photodegradable- light
Oxydegradable - oxygen
Hydro degradable- water

46
Q

Why does refraction occur ?

A

The action of micro organisms which convert the material into water , carbon dioxide, biomass and possibly methane

Product Design (6 decks)

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