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WorksheetsQUIZ MRC UNIT 3 PREMIX & PREPREG
Total questions: 15
Worksheet time: 8mins
What is the process shown in the figure?
Dough Moulding Compound
Sheet Molding Compound
Prepreg
CSM process
All the below are characteristic of SMC EXCEPT:
Highly crosslink
More expensive than metal
Have unidirectional form (UD)
Suitable for Compression Molding
A prepreg consists of a combination of a matrix (or resin) and fibre reinforcement.
Yes
No
C-Stage material requires cold storage to prevent complete curing.
Yes
No
What is the picture shown?
CSM
Carbon black
Unidirectional Prepreg
Kevlar
What is benefits of Prepregs?
I) Ease of use
II) Control of fibre volume fraction
III) Clean process
IV) High void content
I and II
I, II and III
I, II and IV
I, II, III and IV
All below is properties of prepreg EXCEPT:
Volatile-free at normal room temperature.
Prepreg is covered on both sides by protective coverings
Leak-free and spillage free.
Need to mix with wet resin
What type of premix shown in figure?
Sheet Molding Compound
Dough Molding Compound
Prepreg
Gelcoat mixing
DMC finds large application in items such as electrical parts and housings
Yes
No
All below is premix type EXCEPT:
SMC
DMC / BMC
Prepreg
Wet Layup
SMC is a combination of chopped glass strands and filled polyester resin, in the form of a sheet.
Yes
No
Prepreg/premix contains all the components needed for moulding the final part:
I) Resin
II) Reinforcement
III) Filler
IV) Catalyst
I and II
I, II and III
I, II and IV
I, II, III and IV
A prepreg consists of a combination of a matrix (or resin) and fibre reinforcement. It is ready to use in the component manufacturing process.
Yes
No
UNIDIRECTIONAL (UD) form is a several direction of reinforcement
Yes
No
Why we need to use Prepreg?
I) Durable
II) Temperature resistant
III) Good stiffness
IV) Lighweight
I and II
I, II and III
I, II and IV
I, II, III and IV
