*Please Note: The information outlined above is to be used as reference for ASTM D Standard Test Methods for Rubber Property – Adhesion to Rigid. ASTM D determines the adhesion strength of rubber to rigid materials, such as metals. The standard requires that the testing machine conform to practices. 9 Sep This standard is issued under the fixed designation D ; the 1 These test methods are under the jurisdiction of ASTM Committee D11 on.
|Published (Last):||20 April 2015|
|PDF File Size:||8.44 Mb|
|ePub File Size:||8.48 Mb|
|Price:||Free* [*Free Regsitration Required]|
First, pull a quality control test piece from each molded batch to determine that per cent adhesion is obtained prior to environmental exposure or laboratory storage with a pre-strain. The specimen for this method should be a strip of rubber 6. It opens to expose both horizontal specimen surfaces, greatly easing specimen removal.
Place the tab in the grip and apply a steady load at the rate of 50 mm 2. This test combines tensile and shear forces in the rubber specimen material.
The specimens are placed into the shear test fixture and the shear stress is placed on the bond line. Clamp force up to 1.
This allows the handles to rotate, which facilitates opening the mold. We offer machines, apparatus, testers, tensile grips, test fixtures, clamps, holders, jigs, faces, jaws, extensometers, environmental and humidity chambers, furnaces, baths and custom solutions for unique applications.
Data from this test will be a typical tensile force plot force vs displacement. The test engineer can learn more about the uniformity of the rubber coating from this visual monitoring. qstm
The dual – acting design of series grips means that jaw faces can be adjusted to accommodate different specimen thicknesses. Method E of ASTM D determines the adhesive strength of rubber tank lining to a tank wall using a d49 degree strip test. XyLive is the best choice to enable the test engineer to visually monitor the progress of the test vs the data on the computer screen. Discover simpler and smarter testing with features such as pre-loaded test methods, QuickTest in seconds, enhanced data exporting: Either the rubber material fails internally or at the adhesion surface to the metal.
Thicker specimens, which are prepared in dual platen laboratory molds, are often subject to damage caused by the difficulty of extraction.
ASTM D Rubber Property – Adhesion to Rigid Substrates – Instron
Peel force is indicated in pounds per square inch of length of the peel line. As force is applied in one direction the material shrinks in the orthogonal direction. The adhesion values are obtained d4299 measuring the force in an axial direction that is necessary to separate the bonded rubber from the metal component.
Each puck should be. Please confirm that you agree with our privacy and cookies policy to submit this form. In the Figure 7 diagram, the specimen is shown in a horizontal position, when in reality, d42 specimen would be placed vertically in the test machine.
This test is almost identical to Method B, except it applies exclusively to the rubber lining of a tank wall. Make sure that a 1 inch by 1 inch tab is kept from bonding by covering it with tape. We are confident that we have what you are looking for. The metal pieces are made with tabs on the backsides for gripping in the test machine.
Record the total load at the time of failure. Have a question about conducting the test d42 this standard? Line contact and special coated faces asrm also available.
At the end of the test you will need to record the force vs displacement. Results are obtained by measuring the pull load necessary to separate a rubber strip from a metal surface at a 90 degree angle.
Specimen damage may go unnoticed, adversely affecting the repeatability and reproducibility of test determinations. The handles are manufactured from stainless d492 a chromium – nickel austenitic alloy and contain integral support pins.
ASTM D429 Rubber Property – Adhesion to Rigid Substrates
Test Method A helps determine the static adhesion strength of rubber to metal. This section will be used to clamp in the jaws of the grip. Before the load is applied, strip the d4429 from the metal plate by using a sharp knife.