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

Accepted Answer

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

Accepted Answer

Heat staking uses heated air to soften posts that typically extend through holes in mating parts, making it similar to hot-gas welding in its application and technique.

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

Accepted Answer

Urea-formaldehyde is commonly used in the production of particle boards due to its strong adhesive properties, making it ideal for bonding wood particles together.

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

Accepted Answer

Mechanical adhesion involves the interlocking of surfaces at a microscopic level, which is different from methods like chemical adhesion (which involves chemical bonds) or mechanical fastening/friction fitting (which involve physical components like screws, nails, or tight fits).

Question 5

An example of an elastomeric adhesive is ____.
A) caulk
B) epoxy resin
C) phenolic resin
D) Duco® cement

Accepted Answer

Caulk is an example of an elastomeric adhesive because it is flexible and rubbery, allowing it to stretch and compress, which is characteristic of elastomers.

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

Accepted Answer

Heated-tool bonding involves heating the materials to be joined until they reach a molten state and then pressing them together to form a bond as they cool. This method is commonly used with thermoplastics and other materials that can be melted and re-solidified.

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

Accepted Answer

Mechanical adhesives need to be in a liquid or semiliquid state during the bonding operation to ensure proper adhesion between surfaces.

Question 8

What is a disadvantage of hot-melt adhesives?
A) particle boards
B) leather shoes 
C) safety glass
D) marine plywood

Accepted Answer

Hot-melt adhesives can be disadvantageous for marine plywood because they may not withstand the moisture and temperature variations typically encountered in marine environments.

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

Accepted Answer

Polyvinyl butyral (PVB) is used in the interlayer of safety glass due to its excellent adhesion properties to glass, making it ideal for this application.

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

Accepted Answer

Impulse bonding uses a short, intense burst of heat to bond materials together, unlike heated-tool bonding which involves tools that are continuously heated.

Question 11

What adhesive was used in ancient times to seal cracks in boats?
A) pitch
B) shellac
C) wax
D) natural rubber

Accepted Answer

Pitch, a form of tar, was commonly used in ancient times for waterproofing and sealing cracks in boats. It is a natural adhesive substance derived from the distillation of wood tar or petroleum.

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

Accepted Answer

Epoxy resins are thermosetting plastics available in two-part paste components, which harden when mixed and provide strong adhesive properties.

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

Accepted Answer

Cyanoacrylate adhesives are known for their rapid-setting properties when pressure is applied, making them commonly used as "super glues" for various applications.

Question 14

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

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

Accepted Answer

The answer of Cartridges such as these, containing caulks or...

Question 15

Spin welding is a friction method of joining ____ thermoplastic parts.
A) solvent-based
B) polymeric
C) monomeric
D) circular

Accepted Answer

The answer of Spin welding is a friction method of...

Question 16

In chemical adhesion, the adhesive process is maintained by ____.  
A) electrostatic forces
B) catalysts
C) molecular valence forces
D) ionic bonding

Accepted Answer

Chemical adhesion is maintained by molecular valence forces, which involve the sharing or exchange of electrons between the adhesive and the substrate.

Question 17

Dielectric bonding is most likely to be used to bond ____.
A) ABS
B) polyethylene
C) polystyrene
D) fluoroplastics

Accepted Answer

Dielectric bonding is most effective with polar plastics like ABS, which have dipole moments that can be aligned in an electric field, facilitating the bonding process.

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

Accepted Answer

White glue, which is based on polyvinyl acetate, is widely used by carpenters, artists, secretaries, and many others due to its versatility and ease of use.

Question 19

What type of fasteners are pictured here?

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

Accepted Answer

The answer of What type of fasteners are pictured here?...

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

Accepted Answer

Insertion bonding utilizes ultrasonic energy to heat and melt plastic around a metal insert, creating a strong bond once the plastic cools and solidifies.

Quiz 18: Fabrication Processes and Materials

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

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

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

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

An example of an elastomeric adhesive is ____.

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

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

What is a disadvantage of hot-melt adhesives?

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

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

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

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

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

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

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

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

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

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

What type of fasteners are pictured here?

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