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DT > Materials > Flashcards

Materials Flashcards

1
Q

Name some ferrous metals

A

Cast iron, High carbon steel, Low carbon/mild steel

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2
Q

What are the general properties of ferrous metals?

A

Magnetic, Hard, but brittle. Contain iron

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3
Q

Name some non ferrous metals

A

Aluminium, Zinc, Copper, Tin

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4
Q

What are the general properties of non ferrous metals

A

Non-magnetic, higher resistance to rust, malleable & ductile.

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5
Q

Name some alloys.

A

High speed steel, stainless steel, brass.

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6
Q

What are the general properties of alloys?

A

Malleable, hard, resistant & ductile.

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7
Q

What does (PP) stand for?

A

Polypropylene, thermoforming

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8
Q

What does (HDPE) stand for?

A

High density polyethylene, thermoforming

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9
Q

What does (HIPS) stand for?

A

High Impact Polystyrene, thermoforming

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10
Q

What does (PET) stand for?

A

Polyethylene Terephthalate, thermoforming

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11
Q

What does (PMMA) stand for?

A

Acrylic, thermoforming

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12
Q

What does (PVC) stand for?

A

Polyvinyl Chloride, thermoforming

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13
Q

What does (PR) stand for?

A

Polyester resin, thermosetting

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14
Q

What does (ER) stand for?

A

Epoxy resin, thermosetting

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15
Q

What does (UF) stand for?

A

Urea Formaldehyde, thermosetting

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16
Q

What does (PF) stand for?

A

Phenol formaldehyde, thermosetting

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17
Q

What does (MF) stand for?

A

Melamine formaldehyde, thermosetting

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18
Q

Define thermoforming

A

plastics that can be re- heated and therefore shaped in various ways, can be recycled

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19
Q

Define thermosetting

A

Once ‘set’ these plastics cannot be reheated to soften, shape and mould, can’t be recycled

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20
Q

What are some polymer additives?

A

Plasticisers, Pigments, Stabilizers, Fillers.

21
Q

What is a plasticizer?

A

Plasticizers are substances added to plastics to make them softer and easier to shape.

22
Q

What is a stabilizer?

A

Additives used to prevent degradation or deterioration of materials, typically by inhibiting reactions such as oxidation or UV degradation.

23
Q

What is a filler?

A

Inert materials added to plastics to improve properties such as strength, stiffness, or density, or to reduce cost by displacing more expensive polymer materials.

24
Q

What is a stock form?

A

the standard shapes and sizes in which a material is available

25
Q

What are some different polymer stock forms?

A
26
Q

What is anodising?

A

Anodising is a process that adds a protective layer to metals like aluminium to improve corrosion resistance and can also change its color.

27
Q

What is electroplating?

A

Electroplating is a process where a metal object is coated with a thin layer of another metal using electricity. It’s used to improve appearance, corrosion resistance, or other properties of the object.

28
Q

What is staining?

A

Staining is applying a colored finish to wood or concrete surfaces to enhance their appearance while preserving the natural texture and grain of the material.

29
Q

What are vinyl decals?

A

Vinyl decals are adhesive stickers made from vinyl material. They are used for decorative purposes, branding, or signage on various surfaces like vehicles, windows, and walls.

30
Q

What is galvanizing?

A

Galvanizing is coating steel with zinc to prevent rust and corrosion

31
Q

What is plastic powder coating?

A

Plastic powder coating is a way to apply a durable and decorative finish by spraying and heating dry plastic powder on a surface.

32
Q

What is polyurethane varnish?

A

Polyurethane varnish is a clear, durable coating applied to wood surfaces to protect them from scratches, moisture, and UV damage while enhancing their appearance.

33
Q

What is spray paint?

A

Spray paint is a type of paint packaged in a pressurized can that is applied by spraying a fine mist of paint onto surfaces for quick and even coverage.

34
Q

What is teak oil?

A

Teak oil is a protective finish made from natural oils that is applied to teak wood to enhance its natural beauty, provide moisture resistance, and protect it from the elements.

35
Q

What is brush-on metal paint?

A

Brush-on metal paint is a type of paint designed for applying with a brush or roller to metal surfaces. It provides a protective and decorative coating, enhancing the appearance and durability of the metal.

36
Q

What would staining be used on?

A

Wood or concrete surfaces in construction.

37
Q

What would vinyl decals be used on?

A

Vehicles, windows, walls for decorative or branding purposes.

38
Q

What would galvanizing be used on?

A

Steel structures and components to prevent corrosion

39
Q

What would plastic powder coating be used on?

A

Metal surfaces for a durable and decorative finish.

40
Q

What would polyurethane varnish be used on?

A

Wooden furniture, floors, and trim for protection and enhancement.

41
Q

What would teak oil be used on?

A

Teak wood furniture and outdoor structures for protection and enhanced appearance.

42
Q

What would brush-on metal paint be used on?

A

Metal surfaces like fences, gates, and machinery for protection and decoration.

43
Q

What would anodising be used on?

A

Aluminium products like cookware, window frames, and automotive parts.

44
Q

What would electroplating be used on?

A

Jewelry, automotive trim, and household fixtures.

45
Q

What is a piezoelectric material?

A

Piezoelectricity, electrical charge built up in response to mechanical stress.

46
Q

Phosphorescent

A

something that glows or emits light without heat after being exposed to light.

47
Q

Photochromic

A

These are materials that change color when exposed to light.

48
Q

Thermochromic

A

This refers to materials that change color with temperature fluctuations

DT (4 decks)

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