plastics

Question 1

polymerization

Answer 1

ethylene to polethylene

Question 2

addition polymarysation

Answer 2

vinyl chloride to polivinyl chloride

Question 3

condension polymerisation

Answer 3

elimination of water

Question 4

plastic classification

Answer 4

crystalline and amorphous

Question 5

classification by use

Answer 5

structural
textile
adhesive
coating
for heating
wiring
rubbery

Question 6

thermosetting

Answer 6

resin with hardener, cross-linked

Question 7

elastomers

Answer 7

rubber and sulphur

Question 8

mode of receiving

Answer 8

polymerization resins, condensation -+- and addition -=-

Question 9

plastic component penetrating between chain units an weakening van der Waals inter-reactions, lowers stiffness and viscosity,

Answer 9

plasticizers

Question 10

low, middle and high-boiling (acc to temp) esters, ketones, alcohols

Answer 10

solvents

Question 11

by production processes (stamping, press-molding) - stearide acid and its salts, natural wax, mineral oils. T lower adhesionpolish products

Answer 11

lubricants

Question 12

protect polymers from degradation

Answer 12

stabilizers

Question 13

stabilizer types

Answer 13

polyhydroxide phenols
aromatic amines
organic sulfur compounds
benzonates
soot

Question 14

plastic components increasing electrical conductivity that are hydrophilic, high polarized substances

Answer 14

anti electrostatics

Question 15

types of anti-electrostatics

Answer 15

derivatives of amines

esters of stearic acid, glycol or glycerol

Question 16

plastic componets that retard burning processes, influence of lowering of material oxidation speed during contact with flame-deactivation of compounds emerging during combustion of polymer

Answer 16

flame retarders

Question 17

components that aare non-soluble pigments , coloring in mas or on the surface

Answer 17

colors

Question 18

types of colors

Answer 18

non-organic: oxides, su;fites, chromates of metals

organic: nitrogenic, polycyclical

Question 19

mixing of polymer with: other polymer (composite, alloy ) , powdered matters or fibers, gasses as well (filled plastic, films, laminates, foams)

Answer 19

fillers

Question 20

plastic component whose cells (pours) in polymer matrix are formed by the means of porophores

Answer 20

foamed plastics

Question 21

foamed plastic types

Answer 21

polystyrene PS, polivinyl chloride PVC, polythene PE, melamine-formaldehyde resins MF, polyepoxides EP, polyurethanes PUR

Question 22

processing

Answer 22

preparing. forming, finishing

Question 23

plastic density

Answer 23

0.9 to 1,8 g/cm3

Question 24

plastic absorbability

Answer 24

from zero to several dozens of percent

Question 25

plastic thermal conductiv.

Answer 25

acc to leakproofness

Question 26

specific heat

Answer 26

1,25 to 1.70 kJ/kg K

Question 27

plastic lin

Answer 27

higher than traditional, by 2 to 20 times

Question 28

heat resistance

Answer 28

lower than trad, 60 to 90 for thermoplasts and above 150 C for thermosettings