01-1A-507

Question 1

Shelf life information may be found in the ?

Answer 1

DoD 4140.27M Shelf Life Management Manual

Question 2

What contains policy concerning the storage life testing and disposition instructions for material in the 8030 and 8040 National Stock classes?

Answer 2

00-20K-1

Question 3

Where is the stocklist and official source of assigned shelf life data?

Answer 3

C-ML

Question 4

What is typically solvent-dispersed adhesive used for non critical bonding applications?

Answer 4

Cements

Question 5

What is cement used for?

Answer 5

for bonding rubber, gaskets, weather stripping,paper, and fabrics to themselves and to metal and other substrates

Question 6

What is the main function of adhesives?

Answer 6

is to hold two like or unlike surfaces such as metal, glass, wood, plastics, or laminates together through molecular attraction or mechanical anchorage.

Question 7

Which type of adhesive is most frequently used?

Answer 7

Epoxy resins

Question 8

What purposes are coatings and primers generally used for?

Answer 8

Protection and insulation

Question 9

What determines which sealants will perform best in a given environment?

Answer 9

the chemistry of the base compound

Question 10

What are the most commonly used sealants?

Answer 10

Are polysulfides, polythioethers, and silcones

Question 11

what is the major limiting factor to consider when determining the amount of catalyst?

Answer 11

the catalyst reduces the pot life of the mixed materials in addition to accelerating the curing rate.

Question 12

One-part materials are compounded by the manufacturer and are _______.

Answer 12

ready for application

Question 13

What type of material are compounds requiring separate packaging in order to prevent cure prior to application

Answer 13

Two-Part Materials

Question 14

Adhesives are ___-part formulations requiring mixing of a base compound and catalyst for cure.

Answer 14

two

Question 15

You should mix adhesives to a _______ consistency.

Answer 15

homogeneous consistency

Question 16

When shall the accelerator be stirred for two-part sealants (when supplied in pint,quart,gallon kits)

Answer 16

prior to mixing, to obtain a completely homogeneous material.

Question 17

What are two distinctive types of cement?

Answer 17

vulcanizing and solvent release

Question 18

What does it mean by solvent release cements?

Answer 18

air-drying

Question 19

What does the term “tack free” refer to?

Answer 19

This term should be interpreted as allowing the solvent to evaporate to the point where there is slight adherence to film of cement.

Question 20

How do you determine the state of tack free?

Answer 20

press a knuckle to the film. There shall be slight adherence to the knuckle, but the film shall not stick.

Question 21

What is vulcanizing?

Answer 21

Is the process, which increase the bond strength of structural elastomers.

Question 22

Where is vulcanizing used?

Answer 22

Is used where higher adhesion is needed than typical air-drying or solvent evaporation cements can provide.

Question 23

If excessive heat is applied to speed up curing epoxy adhesives, what kind of reacting may occur causing a hazardous condition?

Answer 23

exothermic reaction

Question 24

Coatings and primer coatings require at least ____days to achieve maximum adhesion and environmental resistance.

Answer 24

14

Question 25

AMS-3265

Answer 25

two-part synthetic rubber/ corrosion protection, seals access doors floor boards, faying surfaces, not to be useds in integral fuel tanks

Question 26

AMS-S-8802

Answer 26

2-part polysulfide// no corrosion protection//Seal integral fuel tanks, fuel cell cavities, fill voids, fillet seams rivets, seams fasteners