EN
ZHTest Method: SATRA TM344
Hydrolysis of polyurethane solings and polyurethane coated leathers
February 2022
SCOPE
This method describes a process for rapidly hydrolysing test specimens before carrying out mechanical performance tests. The method is mainly applicable to polyurethane-based footwear soling and upper materials but can be used with any material which is susceptible to hydrolytic attack.
PRINCIPLE
Test specimens are stored in a warm humid environment for one or more predetermined periods of time, usually 7, 10, 14 and other multiples of 7 days. Mechanical tests are carried out on the test specimens following storage and also on reference specimens which have not been treated. The size of the specimens will depend on the type of mechanical test which is to be conducted. Typical mechanical tests include, but are not limited to:
PU solings: Resistance to flex cracking, tensile strength, split tear strength and abrasion resistance.
PU upper materials: Resistance to flex cracking, coating adhesion and colour fastness to rubbing.
REFERENCES
This Test Method does not reference any additional Standards or Test Methods.
HISTORY
First issued April 1995. Revised April 1995, February 2022.
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