Surface Energy

dynes/em

Water CONTACT ANGLE

degrees

BEFORE

AFTER

BEFORE

AFTER

1. Hydrocarbons

Polypropylene

29

>73

87

22

Polyethylene

31

>73

87

42

Polystyrene

38

>73

7`2.5

15

ABS

35

>73

82

26

Polyamide. Polyethylen copolymer

<36

>73

63

17

Epoxy

<36

>73

59.0

12.5

Polyester

41

>73

71

18

Rigid PVC

39

>73

90

35

Phenolic

Note

>73

59

36.5

2. Fluorcarbons

Polytetrafluorethylene/

Polyethylene copolymer

37

>73

92

53

Fluorinated ethylene propylene

22

72

96

68

Polyvlnylidene

25

>73

78.5

36

3. Elastomers

Silicone

24

>73

96

53

Natural rubber

24

>73

Note

Note

Latex

Note

>73

Note

Note

Polyurethane

Note

>73

Note

Note

Styrene butadiene rubber

48

>73

Note

Note

4. Fluoroelastomers

Fluor carbon copolymer elastomer

<36

>73

87

51.1

5.Engineering thermoplastics

Pet

41

>73

76.5

17.5

Poly carbonate

46

>73

75

33

Polyamide

40

>73

79

30

Poly aramid

Note

>73

Note

Note

Polyaryel ether ketone

<36

>73

92.5

3.5

Poly acetal

<36

>73

Note

Note

Poly phenylene oxide

47

>73

75

38

Pbt

32

>73

Note

Note

Poly sulfone

41

>73

76.6

16.5

Poly ether sulfone

50

>73

92

9

Polyarylsulfone

41

>73

70

21

Poly phenylene sulfide

38

>73

84.5

28.5