Relevant adhesion test results obtained during the last two projects performed by the lining applicator may be referred to in.
Rubber lining adhesion test.
This test peels rubber conveyor belting and measures the average peel force over a 5 section.
Pressure sensitive tape is applied and removed over cuts made in the coating.
For polymer rubber linings qualification of procedures may include adhesion testing.
Chapter rubber compound and vulcanizate testing is related to the chapter on rubber raw material testing and provides a comprehensive description of the system of testing rubber compounds materials and vulcanizates starting from sampling and testing vessels up to evaluation of test results according to specific standards.
There are many conditions that can affect the adhesion of rubber to various substrates such as metal and fabrics.
Method a rubber part assembled between two parallel metal plates.
The astm d429 includes the test procedure to determine the adhesion of rubber to rigid metal substrates.
Method c measuring adhesion of rubber to metal with a conical specimen.
Note before applying adhesive to the lining the rubber may require to be freshened by giving it a wipe with solvent.
There is no known correlation to other adhesion test methods pull off tape etc.
Method b 90 stripping test rubber part assembled to one metal plate.
1 1 these test methods cover procedures for testing the static adhesional strength of rubber to rigid materials in most cases metals.
The standard is divided into.
On metal substrates a more formal version of the knife test is the tape test.
3 4 just prior to the application of the rubber repeat above step 3 3 using tack on substrate then apply tack on rubber lining.
Allow to dry until tacky on both the substrate and the rubber approximate 1 hour.
Adhesion testing is a critical aspect of multi component rubber products and frequently should be considered for both rubber to rubber interfaces and rubber to reinforcement interfaces.
The result is often critical to the acceptance or rejection of a coating process as the adhesion value quoted by.
If a procedure that includes adhesion testing is used the quality control adhesion testing may be considered optional.
The vehicle engine mounts rubber coated metal components and rubber lined tanks and containers use the astm d429 standard.
Pull off adhesion testing is widely used to assess the protective coating process and to determine if a coating is fit for service in new construction and for repairs to existing structures.
The testing procedures include peel strength or tensile strength of the adhesion edge.
Once the test is complete you will want to record the force vs displacement.
Either the rubber material fails internally or at the adhesion surface to the metal.
