PIB Application Advice The sheeting is very easily
applied to the insulated pipeline. Suitably sized pieces are cut and wrapped
around the outside of the insulation. Endlaps of 80mm should be allowed and
50mm sidelaps underneath the pipes. The overlaps are solvent welded
by applying Plysolene Welding Agent E with a stiff brush. Other solvents can be
used, but greater skill is required to achieve really good welds, hence
Plysolene always recommend the use of their specifically formulated welding agent.
The solvent should be applied with a circular scrubbing movement to both
surfaces so that they become tacky before the overlap is pressed together. The
use of too much solvent can cause premature failure as the excess solvent will
continue to dissolve the PIB long after the weld has been made.
PIB Technical Data
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Specific Gravity:
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1.6
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Tensile Strength:
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2.5Nmm-2
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Elongation:
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300%
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Temperature Range:
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-34°C to +72°C
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Vapour Permeability:
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5g/0.001in/m2/day at 38°C and
90% RH (0.1g/m2/24 hrs)
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Plysolene PIB Approvals
- Approved by the Department of Environment PSA
Standard Specification (M&E) No 3.
- Plysolene PIB does not conduct electricity
- Meets Class 2 Spread of Flame BSS 467 Part 7: 1971
- Fumes given off when burning are not considered
toxic.
Chemical Resistance
Plysolene PIB is generally
unaffected by:
Hydrochloric Acid (dil & conc), Acetone, Sulphuric Acid (dil & conc),
Acetic Acid, Aqueous Caustic Lime, Methanol and Ethanol, Aqueous Hydrosulphite,
Formic Acid (dil & conc), Methyl Acetate, Copper Sulphate solutions, Sodium
Chloride, Potassium Permanganate, Ethylene Glycol, Hydrogen Peroxide, Chromic
Acid, Glycerine, Ethyl Acetate, Sulphonic Acid, Phenol, Chlorosulphuric Acid,
Cyclohexone, Sodium Hydroxide (dil & conc), Ammonia, Naphthalene Sulphuric
Acid, Solvents E13/E14.
Plysolene PIB is
semi-resistant to:
Concentrated Nitric Acid, Nitration Acid
Plysolene PIB is NOT resistant
to:
Chlorine & Bromine (liquid, gaseous or aqueous)
Plysolene PIB swells in:
Ether, Butyl Acetate, Petrol and Diesel, Animal and Vegetable Fats and Oils
(eg. Lard, Butter, Coconut Fat, Linseed, Olive or Whale Oil.
Plysolene PIB is soluble in
the following:
Benzine, Xylene, Paraffin Wax, Carbon Bisulphide, Toluene, Cyclohexane, Liquid
Paraffin, Chlorobenzene, Benzene, Mineral Oil, Methylene Chloride, Carbon
Tetrachloride.
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