PLASTICS EXAM 2 EXAM QUESTIONS AND ANSWERS
additives - CORRECT ANSWER✅✅a chemical added to something in small quantities, typically to
improve or preserve it.
Anti-oxidants - CORRECT ANSWER✅✅chemicals added to products to prevent oxidation
antistatic agents - CORRECT ANSWER✅✅reduce a material's likelihood of maintaining static electricity
Colorants - CORRECT ANSWER✅✅dyes, pigments, and optical brighteners used to apply color to fibers,
yarns, fabrics, and garments
coupling agents - CORRECT ANSWER✅✅is a chemical which improves the adhesion between two
phases in a composite material. The term 'composite' is used here to denote a material which has two
or more distinct constituents, not chemically bound to each other.
curing agents - CORRECT ANSWER✅✅can be defined as a substance able to participate in the chemical
reaction between the oligomer, pre-polymer and polymer, to achieve the polymerization process and
provide the final film.
flame retardants - CORRECT ANSWER✅✅prevent material from sustaining a flame
Foaming/Blowing Agents - CORRECT ANSWER✅✅The blowing agent is used to create a cellular
structure from liquid plastic resin, and in the case of foam used for insulation
Heat Stabilizers - CORRECT ANSWER✅✅These additives increase the ability of the material to withstand
the negative effects of heat exposure. They are used to increase the overall service temperature of the
material.
Impact Modifiers - CORRECT ANSWER✅✅Additive used to enhance the material's ability to withstand
the force of impact.
, Lubricants - CORRECT ANSWER✅✅substances that are applied to surfaces to reduce the friction
between the surfaces
nucleating agents - CORRECT ANSWER✅✅has a surface charge that is opposite to the partial charge of
the chemical moiety of the polymer. It accelerates its rate of crystallization, and a melting point is
greater than the melting point of the melt processible polymer.
Plasticizer - CORRECT ANSWER✅✅a substance (typically a solvent) added to a synthetic resin to
produce or promote plasticity and flexibility and to reduce brittleness.
preservatives - CORRECT ANSWER✅✅Substances added to a specimen to prevent deterioration of cells
or chemicals
processing aids - CORRECT ANSWER✅✅improve processing, increase production rates and improve
surface finishes.
UV stabilizers - CORRECT ANSWER✅✅Control color stability and prevent sunlight from causing fading
or discoloration.
Reinforcements - CORRECT ANSWER✅✅something that increases strength with additional support
lamina - CORRECT ANSWER✅✅layer, sheets of fibers added for support.
fibrous reinforcing - CORRECT ANSWER✅✅Composed of short fibers of glass, steel, or polypropylene
that are added to the concrete mix.
Sub Classes:
1. glass
2.Carbonaceos
3.Polymer
4.inorganic
5.metal
additives - CORRECT ANSWER✅✅a chemical added to something in small quantities, typically to
improve or preserve it.
Anti-oxidants - CORRECT ANSWER✅✅chemicals added to products to prevent oxidation
antistatic agents - CORRECT ANSWER✅✅reduce a material's likelihood of maintaining static electricity
Colorants - CORRECT ANSWER✅✅dyes, pigments, and optical brighteners used to apply color to fibers,
yarns, fabrics, and garments
coupling agents - CORRECT ANSWER✅✅is a chemical which improves the adhesion between two
phases in a composite material. The term 'composite' is used here to denote a material which has two
or more distinct constituents, not chemically bound to each other.
curing agents - CORRECT ANSWER✅✅can be defined as a substance able to participate in the chemical
reaction between the oligomer, pre-polymer and polymer, to achieve the polymerization process and
provide the final film.
flame retardants - CORRECT ANSWER✅✅prevent material from sustaining a flame
Foaming/Blowing Agents - CORRECT ANSWER✅✅The blowing agent is used to create a cellular
structure from liquid plastic resin, and in the case of foam used for insulation
Heat Stabilizers - CORRECT ANSWER✅✅These additives increase the ability of the material to withstand
the negative effects of heat exposure. They are used to increase the overall service temperature of the
material.
Impact Modifiers - CORRECT ANSWER✅✅Additive used to enhance the material's ability to withstand
the force of impact.
, Lubricants - CORRECT ANSWER✅✅substances that are applied to surfaces to reduce the friction
between the surfaces
nucleating agents - CORRECT ANSWER✅✅has a surface charge that is opposite to the partial charge of
the chemical moiety of the polymer. It accelerates its rate of crystallization, and a melting point is
greater than the melting point of the melt processible polymer.
Plasticizer - CORRECT ANSWER✅✅a substance (typically a solvent) added to a synthetic resin to
produce or promote plasticity and flexibility and to reduce brittleness.
preservatives - CORRECT ANSWER✅✅Substances added to a specimen to prevent deterioration of cells
or chemicals
processing aids - CORRECT ANSWER✅✅improve processing, increase production rates and improve
surface finishes.
UV stabilizers - CORRECT ANSWER✅✅Control color stability and prevent sunlight from causing fading
or discoloration.
Reinforcements - CORRECT ANSWER✅✅something that increases strength with additional support
lamina - CORRECT ANSWER✅✅layer, sheets of fibers added for support.
fibrous reinforcing - CORRECT ANSWER✅✅Composed of short fibers of glass, steel, or polypropylene
that are added to the concrete mix.
Sub Classes:
1. glass
2.Carbonaceos
3.Polymer
4.inorganic
5.metal
