Ryton® PPS - Chemical Resistance

Overview

The chemical resistance of Ryton® PPS is well known to be outstanding, even at elevated temperatures. However, being an organic polymer, PPS can be affected by some chemicals under certain conditions. Over the years, we have accumulated a large database on exposure of Ryton® PPS to a wide variety of chemicals. Although it is not possible to test every chemical, we have seen that chemicals having similar structures and/or properties tend to have similar effects on Ryton® PPS compounds. Therefore, we are able to provide some general advice about the compatibility of Ryton® PPS molding and extrusion compounds with entire classes of chemicals.

Chemical resistance properties among the various Ryton® PPS compounds are quite similar with limited exceptions: acids may have greater impact on compounds containing mineral fillers; certain glass-fiber reinforced grades of Ryton® PPS compounds are specially formulated for superior performance hot water.

Performance will vary depending on particular chemicals used, particular conditions of service and particular compounds used. Temperature and duration of exposure are critical factors that must be considered when determining the degree of chemical resistance required for a particular application. If you require further information, our technical experts can provide opinions about the compatibility of Ryton® PPS compounds or Ryton® PPS Alloy compounds with particular chemical environments.

Chemical Compatibility

An extensive alphabetical list of chemicals with our best general recommendations regarding their compatibility with Ryton® PPS compounds.

Chart Legend

The chart below provides an alphabetical list of chemicals along with our best general recommendations regarding their compatibility with Ryton® PPS compounds. The type face in which the chemical name is printed indicates the extent of available test data:

  • Bold: extensive, long-term test data
  • Normal: We have limited, short-term test data
  • Gray: We have no actual test data, our recommendations are based on compatibility similar chemicals

Chemical compatibility is expressed in four general classifications:

  • Acceptable: suitable for extensive exposure even at elevated temperatures
  • Questionable at Elevated Temperatures: caution against extensive exposure to these chemicals at temperatures above 65°C (150°F)
  • Avoid Use of Mineral Filled Grades: acidic chemicals are likely to dissolve common mineral fillers
  • Avoid Exposure: not recommended to use in service with these chemicals except under the limitations cited

Chemical Compatibility Chart


a | b | c | d | e | f | g | h | i | j | k | l | m | n | o
p | q | r | s | t | u | v | w | x | y | z

ChemicalRecommendation
A
AcetaldehydeAcceptable
Acetic Acid, 10%Acceptable
Acetic Acid, 100% (Glacial)Acceptable
Acetic AnhydrideAcceptable
AcetoneAcceptable
AcetonitrileAcceptable
AcetophenoneQuestionable at Elevated Temperatures
Acetyl ChlorideQuestionable at Elevated Temperatures
AcetyleneAcceptable
Acid Mine WaterAcceptable
Acrylic AcidAcceptable
Aluminum ChlorideAcceptable
Aluminum SulfateAcceptable
2-AminoethanolQuestionable at Elevated Temperatures
Ammonia, anhydrousQuestionable at Elevated Temperatures
Ammonium ChlorideAcceptable
Ammonium HydroxideAcceptable
Ammonium NitrateAcceptable
Ammonium SulfateAcceptable
Amyl AcetateAcceptable
Amyl AlcoholAcceptable
AntifreezeAcceptable
AnilineQuestionable at Elevated Temperatures
Aqua RegiaAvoid Exposure
Asphalt EmulsionsAcceptable
B
Barium ChlorideAcceptable
Barium HydroxideAcceptable
Barium SulfateAcceptable
BenzaldehydeQuestionable at Elevated Temperatures
BenzeneQuestionable at Elevated Temperatures
Benzene Sulfonic AcidQuestionable at Elevated Temperatures
Benzoic AcidQuestionable at Elevated Temperatures
BenzonitrileQuestionable at Elevated Temperatures
Benzoyl ChlorideQuestionable at Elevated Temperatures
Benzyl ChlorideQuestionable at Elevated Temperatures
Black Liquor (from pulpwood)Acceptable
BoraxAcceptable
Brake FluidAcceptable
BromineAvoid Extensive Exposure above 0.1%
ButadieneAcceptable
ButaneAcceptable
2-Butanone (Methyl Ethyl Ketone)Acceptable
Butyl AcetateAcceptable
n-Butyl AlcoholAcceptable
Butyl EtherAcceptable
Butyl PhthalateQuestionable at Elevated Temperatures
ButylamineQuestionable at Elevated Temperatures
ButyleneAcceptable
C
Calcium ChlorideAcceptable
Calcium NitrateAcceptable
Calcium SulfateAcceptable
Carbon DioxideAcceptable
Carbon DisulfideAcceptable
Carbon TetrachlorideQuestionable at Elevated Temperatures
Carbonated WaterAcceptable
Carbonic AcidAcceptable
CellosolveAcceptable
ChlorineAvoid Extensive Exposure above 0.1%
ChlorobenzeneQuestionable at Elevated Temperatures
2-ChloroethanolQuestionable at Elevated Temperatures
ChloroformQuestionable at Elevated Temperatures
Chlorophenol, 5% AqueousAcceptable
Chlorosulfonic AcidAvoid Extensive Exposure
Chromic AcidAvoid Extensive Exposure
Clorox (5.25% Sodium Hypochlorite)Acceptable
Copper ChlorideAcceptable
Copper SulfateAcceptable
Cottonseed OilAcceptable
m-CresolQuestionable at Elevated Temperatures
Cresyl Diphenyl Phosphate
Crude Oil (aromatic)Acceptable
CyclohexaneAcceptable
CyclohexanolAcceptable
CyclohexanoneAcceptable
D
DetergentsAcceptable
1,2- DichloroethaneQuestionable at Elevated Temperatures
DichloromethaneQuestionable at Elevated Temperatures
Diesel FuelAcceptable
Diethanolamine, 25%Questionable at Elevated Temperatures
Diethyl EtherAcceptable
DiisobutyleneAcceptable
Dimethyl PhthalateQuestionable at Elevated Temperatures
Dimethyl SulfoxideAcceptable
DimethylanilineQuestionable at Elevated Temperatures
N,N-DimethylformamideAcceptable
Dioctyl PhthalateQuestionable at Elevated Temperatures
p-DioxaneAcceptable
Diphenyl EtherQuestionable at Elevated Temperatures
DowthermAcceptable
E
Engine OilAcceptable
EpichlorohydrinQuestionable at Elevated Temperatures
EthaneAcceptable
EthanolamineQuestionable at Elevated Temperatures
2-EthoxyethanolAcceptable
Ethyl AcetateAcceptable
Ethyl Alcohol (Ethanol)Acceptable
Ethyl ChlorideQuestionable at Elevated Temperatures
Ethyl EtherAcceptable
Ethyl MercaptanAcceptable
EthyleneAcceptable
Ethylene ChlorideQuestionable at Elevated Temperatures
Ethylene ChlorohydrinQuestionable at Elevated Temperatures
Ethylene DichlorideQuestionable at Elevated Temperatures
Ethylene GlycolAcceptable
Ethylene Glycol MonoethyletherAcceptable
EthylenediamineQuestionable at Elevated Temperatures
F
Ferric ChlorideAcceptable
Ferrous ChlorideAcceptable
Fluorosilicic Acid, 25%Acceptable
FormaldehydeAcceptable
Formic AcidAcceptable
FreonQuestionable at Elevated Temperatures
Fuel OilAcceptable
FuranAcceptable
FurfuralAcceptable
G
Gasohol (Gasoline/Alcohol)Acceptable
GasolineAcceptable
Glycolic AcidAcceptable
H
HeptaneAcceptable
HexaneAcceptable
HexeneAcceptable
HFC-134aQuestionable at Elevated Temperatures
Hydraulic Fluid, AircraftAcceptable
HydrazineQuestionable at Elevated Temperatures
Hydrobromic AcidAvoid Extensive Exposure above 0.1%
Hydrochloric AcidAvoid Extensive Exposure above 0.1%
Hydrofluoric AcidAvoid Extensive Exposure above 0.1%
Hydrogen GasAcceptable
Hydrogen PeroxideAvoid Extensive Exposure above 5%
Hydrogen SulfideAcceptable
I
IodineAvoid Extensive Exposure above 0.1%
Isopropyl AlcoholAcceptable
Isopropyl MercaptanAcceptable
J
Jet FuelAcceptable
K
KeroseneAcceptable
L
Lactic AcidAcceptable
Liquefied Petroleum Gas (LPG)Acceptable
Lithium BromideAcceptable
Lubricating OilAcceptable
M
Magnesium ChlorideAcceptable
Magnesium HydroxideAcceptable
MethaneAcceptable
Methoxy PropanolAcceptable
Methyl AcrylateAcceptable
Methyl Alcohol (Methanol)Acceptable
Methyl Ethyl KetoneAcceptable
Methyl Isobutyl KetoneAcceptable
Methyl MercaptanAcceptable
Methyl MethacrylateAcceptable
Methyl tert-Butyl Ether (MTBE)Acceptable
Methylene ChlorideQuestionable at Elevated Temperatures
N-MethylpyrrolidinoneQuestionable at Elevated Temperatures
Mineral OilAcceptable
MorpholineQuestionable at Elevated Temperatures
Motor OilAcceptable
N
NaphthaAcceptable
NaphthaleneQuestionable at Elevated Temperatures
Nitric AcidAvoid Extensive Exposure above 0.1%
NitrobenzeneQuestionable at Elevated Temperatures
NitrogenAcceptable
Nitrogen TetroxideAvoid Extensive Exposure above 0.1%
NitromethaneQuestionable at Elevated Temperatures
O
OzoneAvoid Extensive Exposure above 100 ppm
P
PerchloroethyleneQuestionable at Elevated Temperatures
Peroxyacetic AcidAvoid Extensive Exposure above 1%
Peroxybenzoic AcidAvoid Extensive Exposure above 1%
PhenolQuestionable at Elevated Temperatures
Phosphoric AcidAvoid Use of Mineral Filled Grades
Phosphorus TrichlorideAcceptable
Potassium ChlorideAcceptable
Potassium DichromateAvoid Extensive Exposure above 0.1%
Potassium HydroxideAcceptable
Potassium PermanganateAvoid Extensive Exposure above 0.1%
PropaneAcceptable
Propyl MercaptanAcceptable
PropyleneAcceptable
Propylene ChlorohydrinQuestionable at Elevated Temperatures
Propylene Glycol MonomethyletherAcceptable
PyridineQuestionable at Elevated Temperatures
R
Rapeseed (Rape) OilAcceptable
Rape Oil Methyl EsterAcceptable
Refrigerant R-22Questionable at Elevated Temperatures
S
Sodium AcetateAcceptable
Sodium BicarbonateAcceptable
Sodium BisulfateAcceptable
Sodium CarbonateAcceptable
Sodium ChlorideAcceptable
Sodium CyanideAcceptable
Sodium DichromateAvoid Extensive Exposure above 0.1%
Sodium HydrosulfiteAcceptable
Sodium HydroxideAcceptable
Sodium HypochloriteAvoid Extensive Exposure above 5%
Sodium NitrateAcceptable
Sodium SulfateAcceptable
Sodium SulfideAcceptable
Sodium ThiosulfateAcceptable
SteamAcceptable
Stoddard SolventAcceptable
SulfolaneAcceptable
Sulfur DioxideAcceptable
Sulfuric AcidAvoid Use of Mineral Filled Grades
T
TetrahydrofuranAcceptable
ThiophenolQuestionable at Elevated Temperatures
TolueneQuestionable at Elevated Temperatures
Tomato JuiceAcceptable
Transmission FluidAcceptable
Trichloroacetic AcidQuestionable at Elevated Temperatures
1,1,1-TrichloroethaneQuestionable at Elevated Temperatures
TrichloroethyleneQuestionable at Elevated Temperatures
TrichlorotrifluoroethaneQuestionable at Elevated Temperatures
Triethyl PhosphateAcceptable
TriethylamineQuestionable at Elevated Temperatures
Triphenyl PhosphiteQuestionable at Elevated Temperatures
Trisodium PhosphateAcceptable
TurpentineAcceptable
V
Vegetable OilAcceptable
VinegarAcceptable
W
WaterAcceptable
Salt Water, Sea Water, Tap WaterAcceptable
X
XyleneQuestionable at Elevated Temperatures
Z
Zinc ChlorideAcceptable

Acids, Bases & Salts

Most water-based solutions of acids, bases, or neutral salts have no different effect on Ryton® PPS compounds than water alone. The primary exceptions are strong oxidizing acids, such as nitric acid, hydrochloric acid, or peroxy acids (see Oxidizing Chemicals). Relatively non-oxidizing acids, such as sulfuric acid and phosphoric acid, have little effect on PPS except under very severe conditions, such as high concentration and temperature.

Strong bases, such as concentrated sodium hydroxide or potassium hydroxide solutions, do not degrade PPS. Acids and bases tend to enhance and accelerate hydrolytic attack of polymer-reinforcement interfaces (see Hot Water), but the ultimate reduction in performance is typically not much worse than what occurs in water alone. We generally do not recommend use of compounds containing mineral fillers in service with strong acids (pH < 2) because of the susceptibility of some mineral fillers to acid digestion.


Effects of 50% Aqueous Zinc Chloride on Ryton® PPS Compounds
Ryton® PPS Compound
Exposure Conditions

Tensile
Strength
Retained

Weight
Change

Transverse
Swell

R-4-200BL
 200 hours, 185°F (85°C)

101%

+ 0.1 %

+ 0.1 %

BR111BL
 200 hours, 185°F (85°C)

97%

0.0 %

0.0 %


Effects of Strong Acids and Strong Bases on Ryton® R-4 PPS
Chemical
Exposure Conditions

Tensile
Strength
Retained

Weight
Change

Transverse
Swell

37% Hydrochloric Acid
 24 hours, 200°F (93°C)

61%

+ 1.5 %

 

 3 months, 200°F (93°C)

35%

- 10.2 %

 

 12 months, 200°F (93°C)

27%

- 0.7 %

 

10% Nitric Acid
 24 hours, 200°F (93°C)

91%

0.0 %

 

 3 months, 200°F (93°C)

0%

-----

 

85% Phosphoric Acid
 24 hours, 200°F (93°C)

100%

0.0 %

 

 3 months, 200°F (93°C)

99%

- 0.3 %

 

 12 months, 200°F (93°C)

89%

- 7.2 %

 

30% Sulfuric Acid
 24 hours, 200°F (93°C)

94%

+ 1.3 %

 

 3 months, 200°F (93°C)

89%

+ 1.3 %

 

 12 months, 200°F (93°C)

61%

+ 3.1 %

 

50% Sulfuric Acid
 1 week, 200°F (93°C)

80%

 

+ 1.8 %

 16 weeks, 200°F (93°C)

69%

 

+ 0.8 %

 52 weeks, 200°F (93°C)

73%

 

+ 1.6 %

80% Sulfuric Acid
 1 week, 200°F (93°C)

85%

 

+ 1.5 %

 16 weeks, 200°F (93°C)

85%

 

+ 0.6 %

 52 weeks, 200°F (93°C)

46%

 

+ 2.1 %

30% Sodium Hydroxide
 24 hours, 200°F (93°C)

100%

+ 0.1 %

 

 3 months, 200°F (93°C)

89%

+ 10.5%

 

 12 months, 200°F (93°C)

63%

+ 13.0 %

 

Automotive Fluids

Extensive test data demonstrates that Ryton® PPS compounds, regardless of the filler and/or additives used, are virtually impervious to all common automotive fuels (including alcohol-containing flex fuels), lubricating oils, transmission fluids, brake fluids, and other hydraulic fluids. Although differences in fillers and additives can affect resistance to engine coolants, Ryton® PPS compounds are generally very resistant to glycol-based and silicone containing coolants, even at elevated temperatures.

Ryton® R-4-220NA is specially formulated for enhanced resistance to the detrimental effects of water at elevated temperatures (see Hot Water), and therefore tends to retain a greater degree of mechanical strength over long-term exposure to high temperature engine coolants, especially the more aggressive "OAT" and "hybrid" type “long-life” engine coolants.

View Tables Displaying Effects of Various Automotive fluids on Ryton® PPS Compounds:

Hot Water

Hot water can have a negative impact on the mechanical properties of glass-fiber reinforced grades. Ryton® PPS polymer is not hydrolyzed by hot water and Ryton® R-4-220NA PPS, Ryton® R-4-220BL PPS and Ryton® R-7-220BL PPS have been specially formulated for enhanced resistance to hot water. For more information, refer to the Resistance of Ryton® PPS to Hot Chlorinated Water technical bulletin.


Effects of Hot Water on Ryton® PPS Compounds
Ryton® PPS Compound
Exposure Conditions

Tensile
Strength
Retained

Weight
Change

Transverse
Swell

Unfilled PPS
3 months, 200°F (93°C)

100%

+ 1.9 %

 

6 months, 200°F (93°C)

94%

+ 1.8 %

 

12 months, 200°F (93°C)

91%

+ 2.0 %

 

1 week, 300°F (149°C)

95%

 

 

4 weeks, 300°F (149°C)

91%

 

 

10 days, 350°F (177°C)

97%

 

 

R-4
48 weeks, 171°F (77°C)

76%

+ 0.4 %

 

48 weeks, 185°F (85°C)

59%

+ 0.5 %

 

48 weeks, 199°F (93°C)

52%

+ 0.6 %

 

1 week, 284°F (140°C)

51%

+ 0.2 %

+ 0.2 %

4 weeks, 284°F (140°C)

44%

+ 0.3 %

+ 0.0 %

16 weeks, 284°F (140°C)

46%

+ 0.4 %

+ 0.4 %

R-4XT
1 week, 284°F (140°C)

77%

+ 0.2 %

+ 0.0 %

4 weeks, 284°F (140°C)

64%

+ 0.2 %

+ 0.2 %

16 weeks, 284°F (140°C)

52%

+ 0.3 %

+ 0.2 %

R-4-220NA
1 week, 284°F (140°C)

97%

+ 0.1 %

+ 0.1 %

4 weeks, 284°F (140°C)

86%

+ 0.2 %

+ 0.0 %

16 weeks, 284°F (140°C)

81%

+ 0.2 %

+ 0.2 %

BR111
1 week, 284°F (140°C)

74%

+ 0.2 %

+ 0.2 %

4 weeks, 284°F (140°C)

59%

+ 0.2 %

+ 0.2 %

16 weeks, 284°F (140°C)

52%

+ 0.3 %

+ 0.2 %

R-7-220BL
500 hours, 284°F (140°C)

80%

+ 0.9 %

 

1000 hours, 284°F (140°C)

75%

+ 0.9 %

 

2000 hours, 284°F (140°C)

73%

+ 0.9 %

 

Organic Chemicals

Non-oxidizing organic chemicals generally have little effect on Ryton® PPS compounds, but amines, aromatic compounds, and halogenated compounds may cause some swelling and softening over extended periods of time at elevated temperatures. Ryton® PPS is practically unaffected by many organic chemicals, even under conditions that will dissolve or destroy other plastics, however some classes of organic chemicals can compromise the PPS polymer matrix. Non-aromatic, non-halogenated alcohols, aldehydes, alkanes, alkenes, esters, ethers, and ketones are all generally suitable for service with Ryton® PPS compounds, even at elevated temperatures.


Effects of Organic Chemicals on Ryton® R-4 PPS Compounds
Chemical
Exposure Conditions

Tensile
Strength
Retained

Weight
Change

Transverse
Swell

Aniline
24 hours, 200°F (93°C)

100%

+ 1.0 %

 

3 months, 200°F (93°C)

86%

+ 5.1 %

 

12 months, 200°F (93°C)

42%

+ 5.7 %

 

Benzaldehyde
24 hours, 200°F (93°C)

97%

+ 1.5 %

 

3 months, 200°F (93°C)

47%

+ 5.7 %

 

12 months, 200°F (93°C)

42%

+ 6.5 %

 

Benzonitrile
24 hours, 200°F (93°C)

100%

+ 0.7 %

 

3 months, 200°F (93°C)

79%

+ 4.1 %

 

12 months, 200°F (93°C)

39%

+ 5.5 %

 

n-Butyl Alcohol
24 hours, 200°F (93°C)

100%

0.0 %

 

3 months, 200°F (93°C)

92%

+ 0.1 %

 

12 months, 200°F (93°C)

80%

0.0 %

 

Butyl Ether
24 hours, 200°F (93°C)

100%

0.0 %

 

3 months, 200°F (93°C)

89%

+ 0.7 %

 

12 months, 200°F (93°C)

79%

+ 0.8 %

 

Butylamine
24 hours, 200°F (93°C)

96%

+ 0.8 %

 

3 months, 200°F (93°C)

46%

+ 3.5 %

 

Carbon Tetrachloride
24 hours, 200°F (93°C)

100%

+ 1.0 %

 

3 months, 200°F (93°C)

48%

+ 6.5 %

 

12 months, 200°F (93°C)

25%

+ 9.9 %

 

Chloroform
24 hours, 200°F (93°C)

81%

+ 4.0 %

 

3 months, 200°F (93°C)

77%

+ 9.0 %

 

12 months, 200°F (93°C)

43%

+ 3.9 %

 

Cresyl Diphenyl Phosphate
24 hours, 200°F (93°C)

100%

+ 0.1 %

 

3 months, 200°F (93°C)

100%

+ 2.2 %

 

12 months, 200°F (93°C)

95%

+ 0.5 %

 

Crude Oil (aromatic)
4 weeks, 200°F (93°C)

101%

 

 

16 weeks, 200°F (93°C)

98%

 

 

52 weeks, 200°F (93°C)

100%

 

 

Cyclohexanol
24 hours, 200°F (93°C)

100%

0.0 %

 

3 months, 200°F (93°C)

91%

+ 0.2 %

 

12 months, 200°F (93°C)

86%

+ 0.1 %

 

1,2-Dichloroethane
2 weeks, 200°F (93°C)

108%

+ 4.2 %

+ 2.5 %

8 weeks, 200°F (93°C)

96%

+ 4.5 %

+ 2.8 %

24 weeks, 200°F (93°C)

104%

+ 4.3 %

+ 2.3 %

Diesel Fuel
8 weeks, 200°F (93°C)

100%

 

 

28 weeks, 200°F (93°C)

94%

 

 

52 weeks, 200°F (93°C)

99%

 

 

25% Diethanolamine
1 week, 212°F (100°C)

100%

 

 

4 weeks, 212°F (100°C)

95%

 

 

p-Dioxane
24 hours, 200°F (93°C)

99%

+ 1.4 %

 

3 months, 200°F (93°C)

96%

+ 5.2 %

 

12 months, 200°F (93°C)

82%

 

 

Ethyl Acetate
2 weeks, 200°F (93°C)

114%

+ 0.8 %

+ 0.8 %

8 weeks, 200°F (93°C)

111%

+ 1.9 %

+ 1.3 %

24 weeks, 200°F (93°C)

114%

+ 2.0 %

+ 1.2 %

Ethyl Alcohol
2 weeks, 200°F (93°C)

100%

+ 0.1 %

- 0.8 %

8 weeks, 200°F (93°C)

102%

+ 0.6 %

+ 0.7 %

24 weeks, 200°F (93°C)

100%

+ 0.9 %

+ 0.8 %

Freon 113 / 10% Oil
4 weeks, 100°F (38°C)

101%

+ 0.1 %

 

12 weeks, 100°F (38°C)

98%

0.0 %

 

24 weeks, 100°F (38°C)

103%

0.0 %

 

Hydraulic Fluid, Aircraft
24 hours, 200°F (93°C)

100%

+ 0.03 %

 

1 weeks, 140°F 60°C)

95%

+ 0.02 %

 

3 months, 140°F (60°C)

99%

- 0.02 %

 

Methyl Ethyl Ketone
2 weeks, 200°F (93°C)

115%

+ 1.1 %

+ 1.0 %

8 weeks, 200°F (93°C)

112%

+ 1.9 %

+ 1.7 %

24 weeks, 200°F (93°C)

115%

+ 1.9 %

+ 1.6 %

N-Methylpyrrolidinone
24 hours, 200°F (93°C)

100%

+ 1.5 %

 

3 months, 200°F (93°C)

92%

+ 5.7 %

 

12 months, 200°F (93°C)

80%

+ 5.0 %

 

Nitrobenzene
24 hours, 200°F (93°C)

100%

+ 1.3 %

 

3 months, 200°F (93°C)

63%

+ 6.6 %

 

12 months, 200°F (93°C)

31%

+ 7.3 %

 

Phenol
24 hours, 200°F (93°C)

100%

+ 0.5 %

 

3 months, 200°F (93°C)

92%

+ 2.3 %

 

12 months, 200°F (93°C)

63%

+ 3.1 %

 

Refrigerant R-22
4 weeks, 165°F (74°C)

108%

 

 

8 weeks, 165°F (74°C)

107%

 

 

12 weeks, 165°F (74°C)

121%

 

 

Toluene
24 hours, 200°F (93°C)

100%

+ 1.1 %

 

3 months, 200°F (93°C)

70 %

+ 4.9 %

 

12 months, 200°F (93°C)

41%

+ 4.9 %

 

Oxidizing Chemicals

Avoid exposure of Ryton® PPS compounds or Ryton® PPS Alloy compounds to these chemicals except at low concentrations or for very brief periods.

Listed below are some of the strong oxidizing agents and oxidizing acids known or expected to attack and degrade polyphenylene sulfide. We generally do not recommend using Ryton® PPS in extensive service with these chemicals. However, service in the presence of many of these chemicals under relatively mild conditions may be acceptable. For example, Ryton® PPS can withstand common disinfectant solutions that contain low concentrations of some these chemicals (such as hydrogen peroxide, sodium hypochlorite, or chlorine). Tests and field service experience have also shown that Ryton® PPS can withstand the small quantities of nitric acid and other acids present in flue gases.

Nitric Acid
Chromic Acid
Chlorosulfonic Acid
Sodium Hypochlorite
Hydrogen Peroxide
Potassium Permanganate
Potassium Bichromate
Sodium Bichromate
Ozone
Hydrochloric Acid
Hydrobromic Acid
Hydrofluoric Acid
Chlorine
Bromine
Iodine
Nitrogen Tetroxide
Peroxyacetic Acid
Peroxybenzoic Acid

Effects of Oxidizing Chemicals on Ryton® R-4 PPS
Chemical
Exposure Conditions

Tensile
Strength
Retained

Weight
Change

37% Hydrochloric Acid
24 hours, 200°F (93°C)

61%

+1.5%

3 months, 200°F (93°C)

35%

-10.2%

12 months, 200°F (93°C)

27%

-0.7%

10% Nitric Acid
24 hours, 200°F (93°C)

91%

0.0%

3 months, 200°F (93°C)

0%

----

Ozone, 1.35 ppm
4 weeks, 208°F (98°C)

93%

 

5.25% Sodium Hypochlorite
24 hours, 200°F (93°C)

94%

-1.2%

3 months, 200°F (93°C)

77%

+0.4%

12 months, 200°F (93°C)

61%

+0.3%

Chemical
Exposure Conditions

Flexural
Strength
Retained

Weight
Change

1.5% Bromine
1 month, 180°F (82°C)

75%

 

2 months, 180°F (82°C)

60%

-3.1%

3.3% Bromine
1 month, 73°F (23°C)

62%

 

3 months, 73°F (23°C)

36%

-0.8%

0.26% Chlorine
1 month, 180°F (82°C)

85%

 

3 months, 180°F (82°C)

78%

-1.5%

0.7% Chlorine
1 month, 73°F (23°C)

97%

 

3 months, 73°F (23°C)

99%

+1.4%

Radiation

Ryton® PPS can withstand both gamma and neutron radiation exposure.

Ryton® PPS compounds are used in many nuclear installation applications because they can withstand both gamma and neutron radiation. The data tabulated below shows that 40% glass fiber reinforced PPS (Ryton® R-4 PPS) and glass and mineral filled PPS (Ryton® R-10 PPS) compounds exhibited no significant deterioration of mechanical properties after relatively high exposures to gamma and neutron radiation. Other 40% glass fiber reinforced PPS or glass and mineral filled PPS compounds would be expected to show similar resistance to degradation by radiation exposure.


Effects of Radiation Exposure on Ryton® PPS Compounds

Gamma Radiation
Ryton® PPS Compound
Exposure Conditions

Tensile
Strength
Retained

Flexural
Strength
Retained

Flexural
Modulus
Retained

R-4
5 x 108 rads at 30°C (86°F)

-----

103%

95%

1 x 109 rads at 30°C (86°F)

-----

105%

97%

5 x 109 rads at 30°C (86°F)

-----

99%

96%

3 x 108 rads at 50-55°C (122-131°F)

100%

93%

102%

R-10 5002C
3 x 108 rads at 50-55°C (122-131°F)

97%

99%

103%

R-10 7006A
3 x 108 rads at 50-55°C (122-131°F)

102%

99%

101%

Neutron Radiation
Ryton® PPS Compound
Exposure Conditions

Tensile
Strength
Retained

Flexural
Strength
Retained

Flexural
Modulus
Retained

R-4
5 x 108 rads at 30°C (86°F)

-----

101%

100%

1 x 109 rads at 30°C (86°F)

-----

101%

99%

4 x 108 rads at 50-55°C (122-131°F)

90%

86%

102%

R-10 5002C
4 x 108 rads at 50-55°C (122-131°F)

84%

94%

100%

R-10 7006A
4 x 108 rads at 50-55°C (122-131°F)

87%

95%

97%

Thermal Aging

Ryton® PPS compounds and Ryton® PPS Alloy compounds are highly resistant to thermal oxidative degradation at elevated temperatures.

Ryton® PPS compounds exhibit exceptional resistance to thermal oxidative degradation during long-term exposure to elevated temperatures. Ryton® PPS Alloy compounds also exhibit excellent performance in this regard. The data tabulated below shows the excellent property retention of Ryton® PPS compounds and Ryton® PPS Alloy compounds after thermal aging in air at various temperatures. In these studies, test specimens were aged in forced draft ovens, and samples were removed periodically and tested for tensile strength, modulus (tensile or flexural) and impact strength (unnotched izod or unnotched charpy impact). Under its Component Recognition Program, Underwriters Laboratories (UL) also maintains documentation of studies of the long-term thermal endurance of Ryton® PPS compounds, and UL has established relative thermal indices (RTIs) of 200°C to 240°C (392°F to 464°F) for almost all Ryton® PPS compounds (see UL Yellow Card Listings).

Effects of Thermal Aging on Ryton® PPS Compounds and Ryton® PPS Alloy Compounds

Thermal Aging at 150°C
Ryton® PPS Compound
Hours at 302°F (150°C)
Tensile
Strength
Retained
Flexural
Modulus
Retained
Impact
Strength
Retained
XE5030BL
500 hours79%96%97%
3000 hours100%101%93%
5000 hours101%101%92%
XE4050BL
500 hours86%100%104%
3000 hours105%103%98%
5000 hours99%102%85%
Thermal Aging at 165°C
Ryton® PPS Compound
Hours at 329°F (165°C)
Tensile
Strength
Retained
Flexural
Modulus
Retained
Impact
Strength
Retained
R-4-200BL
500 hours100%99%94%
1000 hours96%98%77%
2000 hours97%100%82%
BR111BL
500 hours105%99%91%
1000 hours102%101%99%
2000 hours99%95%86%
XK2340
500 hours84%104%52%
1000 hours82%108%49%
2000 hours76%106%43%
Thermal Aging at 200°C
Ryton® PPS Compound
Hours at 392°F (200°C)
Tensile
Strength
Retained
Flexural
Modulus
Retained
Impact
Strength
Retained
R-4-200BL
500 hours85%104%67%
1000 hours81%107%66%
2000 hours74%104%56%
R-4-200NA
2000 hours76%105%54%
XK2340
2000 hours46%110%21%
XE5030BL
2000 hours77%112%39%
XE4050BL
2000 hours81%119%37%
Thermal Aging at 220°C
Ryton® PPS Compound
Hours at 428°F (220°C)
Tensile
Strength
Retained
Tensile
Modulus
Retained
Impact
Strength
Retained
R-4-200BL
500 hours80%107%-----
1000 hours79%107%-----
3000 hours72%94%-----
R-4-220BL
500 hours82%109%-----
1000 hours77%98%-----
3000 hours76%97%-----
XE5030BL
500 hours82%103%45%
1000 hours82%106%43%
2000 hours80%108%40%
3000 hours77%109%37%
XE4050BL
500 hours88%105%46%
1000 hours89%108%46%
2000 hours89%113%41%
3000 hours87%114%46%
Thermal Aging at 240°C
Ryton® PPS Compound
Hours at 464°F (240°C)
Tensile
Strength
Retained
Flexural
Modulus
Retained
Impact
Strength
Retained
R-4-200BL
504 hours75%113%58%
1002 hours75%114%51%
2112 hours69%122%51%
2994 hours65%125%41%
BR111
504 hours89%103%57%
1002 hours85%100%52%
2112 hours83%110%53%
2994 hours78%114%48%

UV Light and Weathering

Although exposure to UV light and weathering may cause some surface degradation and erosion, the mechanical properties of Ryton® PPS will be relatively unaffected.

Although exposure of Ryton® PPS to UV light may cause some surface degradation and erosion, the properties of the bulk material generally are relatively unaffected by such exposure. In the study summarized below, Ryton® R-4 PPS (which has no UV inhibitor) and Ryton® R-4 PPS with 2% carbon black as UV inhibitor were subjected to aging in an Atlas Weatherometer and suffered minimal property loss. Many Ryton® PPS compounds have been rated suitable for outdoor use with respect to UV light exposure, water exposure and water immersion in accordance with UL746C (see UL Yellow Card Listings). However, since some discoloration and attrition of surface material may occur over time with UV exposure and weathering, part surface finish should not be expected to remain unchanged over the long term.

Effects of Weatherometer Aging on Ryton® PPS Compounds
Ryton® PPS Compound
Hours of Exposure

Tensile
Strength
kpsi

Elongation

Surface
Erosion
mm

R-4
0

16.7

1.1 %

 

2000

15.3

1.2 %

 

6000

15.5

1.4 %

 

8000

14.4

1.2 %

 

10000

10.6

0.6 %

0.33

R-4 with 2% Carbon Black
0

17.4

1.2 %

 

2000

17.3

1.1 %

 

6000

17.3

0.9 %

 

8000

16.8

1.0 %

0.05