EN
ZHTest Method: SATRA TM332
Chemical analysis of polyurethanes
September 1992
SCOPE
This method is intended to determine the amount of acetone extractable matter present in a polyurethane and, in the case of polyester based polyurethanes, its acid value. The method is applicable to all reaction moulded and thermoplastic polyurethanes.
PRINCIPLE
Part 1 - Acetone extractable matter - Granules, cut from a specimen, are extracted with hot acetone using the soxhlet method. After a predetermined number of solvent changes the extract is dried and weighed to give a measure of the amount of acetone extractable matter present in the material.
Part 2 - Acid Value (polyester based polyurethanes) - The acetone extract produced in Part 1 is dissolved in neutralised acetone and the acidity of the solution measured.
The results may indicate faulty or deteriorated material.
REFERENCES
This Test Method does not reference any additional Standards or Test Methods.
HISTORY
First issued January 1982. Revised September 1992.
AVAILABILITY
This test method is available to members and non-members.
PRICE (ex. VAT)
This price is for a printed copy of the Test Method.
- Members: £75
- Non-members: £215