Polyphenylene Sulfide(PPS) Film Torelina*

Chemical Resistance

orelina* features exceptionally outstanding resistance to chemicals. Table C1 indicates the variation of tensile strength in Torelina* and polyester film when they are immersed in different chemicals. Torelina*'s tensile strength remains stable in virtually all chemicals excluding concentrated sulfuric acid and nitric acid. Torelina* does not have very weak points of chemical resistance as found in polyimide and polyester films against strong base and aramid paper against acid.

Table C1 Tensile Strength Retention of Different Films When Immersed in Chemicals
(Testing conditions: 30°C, 10 days)

Chemicals Concentration (%) Torelina* Polyester film
25µm 25µm
Percent tensile strength retained (%) Remarks* Percent tensile strength retained (%) Remarks*
Acid, sulfuric Conc. 11 P 0 P
Acid, sulfuric 30 96 E 92 E
Acid, hydrochloric Conc. 100 E 85 G
Acid, nitric Conc. 0 P 0 P
Acid, nitric 10 97 E 92 E
Acid, glacial acetic - 100 E 90 G
Sodium hydroxide 10 94 E 47 P
Ammonium hydroxide conc. 100 E 0 P
Sodium carbonate 2 98 E - -
Iron(II) chloride 45 94 E - -
Hydrogen peroxide 30 80 G - -
Methanol - 98 E - -
Ethanol - 100 E - -
Acetone - 99 E 94 E
Carbon tetrachloride - 94 E 91 E
Benzene - 100 E 90 G
Toluene - 98 E - -
Methyl-ethyl-ketone - 90 G - -
n-hexane - 98 E - -
Methylene chloride - 96 E - -

* E: Excellent / G: Good / P: Poor hours

Gasohol Resistance

In addition to gasoline and other fuel oils, Torelina* also features a superb durability against gasohol, the gasoline-alcohol mixture which is now receiving attention as a substitute for gasoline.(see Table C2). In particular, Torelina* exhibits high durability against amine-based chemicals, the weak points for polyester film.

Table C2 Gasohol Resistance of Torelina*

Gasohol Torelina* Polyester film Lumirror* S10
100µm 100µm
Tensile strength retained (%) Elongation at break retained (%) Tensile strength retained (%) Elongation at break retained (%)
FUEL-C Isooctane (50%) / toluene (50%) 87 80 95 90
FUEL-C (85%) / methanol (15%) 80 78 85 78
FUEL-C (80%) / ethanol (20%) 82 75 92 85
FUEL-C / lauryl peroxide (2.5%) 81 70 91 85
FUEL-C / triethanolamine (0.5%) / dioctylphthalate (0.2%) 81 75 65 35

Testing conditions: 60°C, 500 hours

Freon Resistance

As shown in Table C3, Torelina* has a high resistance to Freon, a substance used as a refrigerant in air conditioners, etc. and the amount of extract is very small.

1.Testing conditions
(1)Torelina* : 250µm
(2)Freon : R134a
(3)Temperature : 170°C (vapor phase)
(4)Pressure : 3.4 to 3.5MPa

2.Test results

Film Properties After 500 hr.
Torelina* (250µm) Strength retained (%) 100
Elongation at break retained (%) 80
PET film (250µm) Strength retained (%) 60
Elongation at break retained (%) 5 or lower
PEN film (250µm) Strength retained (%) 48
Elongation at break retained (%) 2

Note : Percentage of tensile strength and elongation retained Percentage retained (%) = Value after aging/initial value X 100

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