3.5 Finishes

Question 1

What do finishes do for product

Answer 1

prevent moisture absorption
prevent against decay/corrosion
protect against instect attack

Question 2

What materials are finished with paint

Answer 2

woods and metals

Question 3

What are the advantages of paint

Answer 3

low cost so used on low cost metals/woods

Question 4

What are disadvantages of paints

Answer 4

metal must be degreased before paint applied

wood knots should be treated to prevent resin ruining finish

undercoats needed

Question 5

What materials are finsihed with varnish

Answer 5

woods

Question 6

What are the features of varnishing

Answer 6

clear or coloured
hard,heatproof, waterproof

Question 7

What is the disadvantage of varnish

Answer 7

wood needs sanding between coats

Question 8

What materials are finished with sealant

Answer 8

metals

Question 9

What is sealant

Answer 9

polymer based protects from corrosion

automotive industry

Question 10

What are the disadvantages to sealants

Answer 10

mostly used as additional barrier like on top of paint