FURN - MAT - Plastics

Question 1

these are long chain molecular structures evolved from common elements and compounds - gases, lime, salt, coal, oil, molasses, cotton, wood - by chemical synthesis

Answer 1

Plastics

Question 2

nalulusaw; a degree of polymerization wherein a long chain of molecular structure can be activated by heat to allow freer movement resulting to plastic being softened and re-softened without deformation

Answer 2

Thermoplastic

Question 3

nadedeform; polymerization wherein further producing linkages, which destroy the mobility of the molecules, and plastic sets into hard, infusible resin which cannot re-softened

Answer 3

Thermosetting

Question 4

a type of rigid foam plastic that has very high thermal resistance; low water absorption and low water vapor permeability. Also has good thermal stability and good adhesion

Applications: thermal insulation for roofs, cavity walls, refrigeration, and pipe lagging

Answer 4

Polyurethane

Question 5

A rigid foam plastic that has relatively low resistance; high strength and very good thermal stability.

Application: insulation of flat roofs

Answer 5

Phenol-formaldehyde (Phenolic Foam)

Question 6

A rigid foam plastic that has high thermal resistance but low mechanical strength; high water absorption, and high water vapor permeability

Application: cavity wall insulation

Answer 6

Urea-formaldehyde

Question 7

a type of rigid foam plastic that has good insulation efficiency; high strength and good chemical and moisture resistance

Application: use restricted to spray applications for storage tanks and vessels

Answer 7

Epoxy

Question 8

a strong, light material that is used for a wide range of products like yachts, aircraft, storage vessels, wall coverings, and all types of vehicles

Answer 8

Glass Reinforced Plastic (GRP)

Question 9

thermoplastic acrylic sheet that is readily obtainable in clear transplant, pastel shades, full colors, and transfusing and fluorescent colors

Brand names: Plexiglass, Perspex, Lucite

Answer 9

Polymethyl Methacrylate

Question 10

has universal uses as a fiber material for it can be cold drawn to five times its original strength

Answer 10

Nylon (Polyamide)

Question 11

third most-widely produced synthetic polymer or plastic; it has 2 forms: (1) rigid, and (2) flexible.

Rigid used for pipes and profiles, and be made softer and more flexible

Answer 11

Polyvinyl Chloride (PVC)

Question 12

thermoplastic polymer with many applications; second most-widely used produced commodity of plastic; polyofelin and is partially crystalline and non-polar.

Answer 12

Polypropylene (PP)

Question 13

a group of thermoplastic polymers containing carbonate groups in the chemical structures; strong, tough and usually transparent.

Answer 13

Polycarbonate (PC)

Question 14

a group of thermoplastic polymers containing carbonate ground in their chemical structures; strong, tough and usually optically transparent.

Answer 14

Polycarbonate (PC)

Question 15

aka “polythene;” most common and widely used plastic in the world; has low strength, hardness and rigidity, but high ductility, impact strength and low friction

Answer 15

Polyethylene (PE)

Question 16

thermoset standards sheets with the pattern on one fact only are usually 0.062” or 1.58mm, but a full range of thickness is also available

Answer 16

Melamine (Decorative Plastic Laminates)