Deck 18: Fabrication Processes and Materials

Question 1

High grades of exterior and marine plywood are bonded with ____. 

A) polyvinyl acetate adhesives
B) cellulosic adhesives
C) phenolic resins
D) resorcinol-formaldehyde resins

Answer 1

D

Question 2

Similar to hot-gas welding, ____ uses heated air to soften posts that typically extend through holes in mating parts.

A) heat staking
B) heated-tool welding
C) impulse bonding
D) electromagnetic bonding

Answer 2

A

Question 3

Urea-formaldehyde is a type of amino resin used in the manufacture of ____.

A) particle boards
B) leather shoes
C) safety glass
D) marine plywood

Answer 3

A

Question 4

A type of fabrication that adheres materials together by interlocking the surfaces is called ____.

A) chemical adhesion
B) mechanical adhesion
C) mechanical fastening
D) friction fitting

Question 5

An example of an elastomeric adhesive is ____.

A) caulk
B) epoxy resin
C) phenolic resin
D) Duco® cement

Question 6

Which method comprises the process of similar materials being heated and the joints brought together while in the molten stage?

A) electromagnetic bonding
B) heat staking
C) impulse bonding
D) heated-tool bonding

Question 7

Although mechanical adhesives come in various forms, they must be ____ during the bonding operation.

A) completely mixed
B) cool
C) heated
D) liquid or semiliquid

Question 8

What is a disadvantage of hot-melt adhesives?

A) particle boards
B) leather shoes 
C) safety glass
D) marine plywood

Question 9

The interlayer of safety glass is made of ____ because it has excellent adhesion to glass.     

A) polyvinyl acetal
B) polyvinyl butyral
C) polyvinyl acetate
D) polyvinyl formal

Question 10

Which method may be thought of as a heated-tool method that does not use continuously heated tools?

A) electromagnetic bonding
B) heat staking
C) impulse bonding
D) heated-tool bonding

Question 11

What adhesive was used in ancient times to seal cracks in boats?

A) pitch
B) shellac
C) wax
D) natural rubber

Question 12

What is a thermosetting plastics adhesive available in two-part paste components?

A) cellulosic adhesives
B) phenolic resins
C) epoxy resins
D) resorcinol-formaldehyde resins

Question 13

A rapid-setting acrylic adhesive that polymerizes when pressure is applied to the joint is ____.

A) polyvinyl alcohol
B) N,N-dimethylformamide
C) cyanoacrylate
D) polyvinyl butyral

Question 14

Cartridges such as these, containing caulks or sealants are types of _____ adhesives.

A) amino resin
B) epoxy resin
C) elastomeric
D) cellulosic

Question 15

Spin welding is a friction method of joining ____ thermoplastic parts.

A) solvent-based
B) polymeric
C) monomeric
D) circular

Question 16

In chemical adhesion, the adhesive process is maintained by ____.  

A) electrostatic forces
B) catalysts
C) molecular valence forces
D) ionic bonding

Question 17

Dielectric bonding is most likely to be used to bond ____.

A) ABS
B) polyethylene
C) polystyrene
D) fluoroplastics

Question 18

One very popular modern polyvinyl acetate adhesive is ____ which is used by carpenters, artists, secretaries, and many other people.

A) cellulose acetate
B) Duco® cement
C) white glue
D) cellulose butyrate

Question 19

What type of fasteners are pictured here?   

A) self-threading
B) threaded metal inserts
C) standard bolts
D) pull mandrels

Question 20

What type of frictional heating technique uses ultrasonic means to place metallic inserts into plastics parts?

A) staking
B) spot bonding
C) insertion bonding
D) dielectric bonding

Question 21

The type of bonding that is common in the packaging industry because it is often used on materials that will not stay bonded unless they are held together while cooling is ____. 

A) electromagnetic bonding
B) heat staking
C) impulse bonding
D) heated-tool bonding

Question 22

Which gas can be used for hot-gas welding when it is essential to prevent oxidation and achieve strong welds?

A) hydrogen
B) helium
C) nitrogen
D) argon

Question 23

A fastening technique in which plastic or metallic parts are inserted into other plastics components, sometimes while the plastics are still warm, is ____.

A) press fitting
B) snap fitting
C) shrink fitting
D) transfer fitting

Question 24

In both press and snap fits, one of two parts is made smaller so that the two cannot fit together without force. The intentional differences in the two part dimensions are called ____.

A) interferences
B) allowances
C) tolerances
D) integrations

Question 25

The solvent often found in white glue is ____.

A) water
B) acetone
C) cyclohexane
D) chloroform