Aircraft finishes

Question 1

What are thinners

Answer 1

Solvents use to reduce viscosity

Question 2

What is acetone and what is it used for

Answer 2

Is a fast evaporating colorless solvent. It is used as an ingredient in paint, nail polish, and varnish removers. It is a strong solvent for most plastics and is ideal for thinning fiberglass resin, polyester resin, vinyl, and adhesives.

Question 3

What are the three types of alcohol that we discussed and how is each used

Answer 3

Butyl alcohol- mixed with dope to retard drying.
Denatured alcohol-cleaner degreaser
Isopropyl- rubbing alcohol

Question 4

What is benzene

Answer 4

Highly flammable colorless liquid with a sweet odor. It is product used in some paint and varnish removers. Extremely toxic

Question 5

What is methylene ethyl ketone and why do we use it so often if it is harmful

Answer 5

Is highly flammable liquid solvent used in paint and varnish removers, paint and primer thinners. Highly effectiveness as a quickly evaporating solvent.

Question 6

What is toluene used for in paint processes

Answer 6

Thinner for zinc chromate primer. It is clear water insoluble liquid

Question 7

What type of paints is turpentine typically used with

Answer 7

Quick dryer used in oil based paints

Question 8

What is not her name for mineral spirits and what do we use it for

Answer 8

Stoddard solvent and is used a paint thinner and mild solvent. Cleaning and degreasing

Question 9

Does naphtha have a low or high flashpoint

Answer 9

Low flashpoint

Question 10

What is the difference is linseed oil and boiled linseed oil

Answer 10

Boiled linseed oil was processed without the additives.

Question 11

What do we use linseed oil for

Answer 11

It makes the paint more fluid transparent and glossy. Also a protective layer on the interior of metal tubing.

Question 12

What are the three methods for paint removal

Answer 12

Chemical stripping, plastic media blasting, bead blasting

Question 13

What are the four primers that we looked at and briefly describe them

Answer 13

Wash primer- water thin coatphosphoric acid in solutions , alcohol and other ingredients. Are to passivate the surface, temp proved corrosion resistance

Question 14

Why do we not use bonds on aircraft for contouring

Answer 14

Because it doesn’t provide flexibility

Question 15

How do we calculate if there is sufficient moisture in the air when applying finishes

Answer 15

Wet bulb/ dry bulb and chart

Question 16

What is varnish and when do we use it

Answer 16

Transparent protective finish primarily used for finishing wood. Dries slower then most solvents