QUIZ UNIT 1 MRC

All properties below is polyester EXCEPT:

• Viscous

• Clear color

• Cross-linking' the molecular chains

• Solution using styrene

Tags

NGSS.HS-PS1-3

Polyester can be divided by two types which is orthophthalic and isophthalic

• Yes

• No

What is the properties of Orthophtalic resin?

I) General purpose

II) Used in low end product

III) Greater strength

IV) Heat resistance

• I and II

• I and III

• I, II and IV

• I, II, III, IV

Tags

NGSS.HS-PS2-6

The process below suitable for using polyester resin EXCEPT:

• Filament Winding

• Spray Lay Up

• Pultrusion

• Press Molding

Tags

NGSS.HS-PS2-6

Thermoset can be defined as "Hardened permanently after being heated once and cannot be recycled”

• Yes

• No

Polymerization requires that each small molecule have at least two reaction points or functional groups.

• Yes

• No

What is the reaction show in the picture?

• Polymerization

• Elimination

• Crosslinking

• Addition

Shelf life is an arbitrary time for practical storage of a thermoset system.

• No

• Yes

Tags

NGSS.HS-PS2-6

What is the process involved in production of vinylester resin?

• Polymerization

• Addition

• Elimination

• Esterification

Properties of Vinylester:

I) Corrosion resistance

II) Withstand water absorption

III) Marine industry

IV) Low viscosity

• I and II

• I, II and III

• I, II and IV

• I, II, III and IV