Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

AIRFRAME REPAIR > CHAPTER 13 - BONDING AND SEALANTS > Flashcards

CHAPTER 13 - BONDING AND SEALANTS Flashcards

1
Q

IMPORTANCE F SEALANTS
What are sealants used for?

A

To isolate one environment from another

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

IMPORTANCE OF SEALANTS
What 2 places are sealants used?

A
  1. On faying surfaces
  2. To form beads and fillets over joints
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

TYPICAL MULTI PART SEALANT
What is the typically used multi-part sealant?

A

PR 1440

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

TYPICAL MULTI PART SEALANT
What is PR 1440?

A

A two-part polysulphide compound comprised of a base and an accelerator
Used for sealing integral fuel tanks and faying surfaces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

TYPICAL MULTI PART SEALANT
How is PR 1440 available?

A

Type A: ‘Brush’ type sealant
Type B: ‘Non-brush’ for fillet seals and encapsulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

TYPICAL MULTI PART SEALANT
What are the two typical applications times PR 1440 is available in?

A

30 minutes
2 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

TYPICAL MULTI PART SEALANT
What is included in a ‘Semkit’ cartridge?

A

The correct quantities
An integral accelerator
Mixing facility

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

TYPICAL MULTI PART SEALANT
What is the Application time?

A

Time it takes for the mixed sealant remains suitable for application

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

TYPICAL MULTI PART SEALANT
What is the Tack Free Time?

A

Length of time it takes for the sealant to be no longer tacky or sticky

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

TYPICAL MULTI PART SEALANT
Define what the Curing Time is..

A

This is the time it takes for a chemical cure to take place. it depends on temperature and relative humidity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

TYPICAL MULTI PART SEALANT
What is Assembly Time?

A

The time that all riveting/fastening must be completed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

TYPICAL MULTI PART SEALANT
What 3 things are ensured with surface preparation before a sealant is applied?

A
  1. Surfaces must before cleaned properly
  2. Products must be corrects prepared
  3. Products must be applied correctly
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

TYPICAL MULTI PART SEALANT
What is the maximum thickness a sealant should not exceed?

A

0.030”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

TYPICAL MULTI PART SEALANT
What should be done to ensure a faying surface is completely sealed with sealant?

A

A small continuous fillet of sealant should be squeezed out on both sides of the overlap and smoothed into the joint when riveting is completely

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

RTV SEALANT
What does RTV stand for with sealants?

A

Room Temperate Vulcanising (RTV) silicone rubber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

RTV SEALANT
What smell do some RTV sealants give off as they cure?

A

Acetic Acid (Vinegar) odour

17
Q

RTV SEALANTS
What are the 5 typical examples of one-part RTVs?
Also state what they would be used for..

A
  1. White General Purpose - for general use (with drinking water and food etc.)
  2. White Electrical Grade - high electrical resistance - used for repair insulation
  3. Grey High Strength - used where durability is required
  4. Red High Temperature - used on pipe sleeves and insulation on engines and APUs
  5. Translucent - Decorative (used on galley and toilet compartment etc.)
18
Q

RTV SEALANT
What specialist applications are one and two part RTV silicone adhesive/sealants used for?
6 EXAMPLES IN THE TTN

A

Levelling compounds, potting compounds, heat sinks, thermal barriers, foaming fillers, release against etc.

19
Q

HYLOMAR
What are the 3 main advantages for using HYLOMAR?

A

Resistant to water, fuel, oil, most chemicals and combustion products
Seals surfaces with imperfections
Withstands vibration, heat and expansion

20
Q

REDUX BONDING
What is Redux a generic name for?

A

A family of certain adhesives

21
Q

REDUX BONDING
What, how and where is Redux 64 used?

A

A LIQUID based adhesive used HOT and under pressure for bonding gaskets on STEEL, CAST METAL AND ALUMINIUM

22
Q

REDUX BONDING
What, how and where is Redux 775R used?

A

Is a LIQUID and POWDER adhesive used WARM and under pressure for bonding METAL TO ITSELF

23
Q

REDUX BONDING
How soon should redux be bonded after preparation?

A

Within 8 hours of preparation

AIRFRAME REPAIR (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions