ASTM D429 Rubber Property - Adhesion to Rigid Substrates
ASTM D429 determines the adhesion strength of rubber to rigid materials, such as metals. The standard requires that the testing machine conform to practices described in ASTM E4. Our Universal Testing Systems meet this specification and provide an appropriate solution for this test application.
Method A describes a tension test used to determine the bond of a rubber part assembled between two parallel metal plates. Our Bluehill® or Bluehill Lite software can calculate the adhesion value per this test method. For increased productivity, the operator can register the observed failure type from a software drop-down menu.
Method B describes a peel procedure to determine the adhesive strength between rubber materials to a metal plate or substrate. In an adhesion test, a measured forced is applied to a test specimen to strip a layer from the specimen with tearing at the bonded surfaces. The value of interest is the "Adhesion Strength" defined as the maximum force divided by the width of the specimen. We recommend using a 90° peel fixture that holds and moves the substrate as the rubber strip is peeled off by an upper grip. We have found that pneumatic side action grips provide an appropriate solution due to ease of use, productivity, and better repeatability. Manual screw action grips can also provide an adequate and affordable solution for this test.
Bluehill 2 material testing software is the second generation of the original fully-integrated modular software package that provides easy tailored application solutions for today's laboratory managers and test technicians. In addition to the standard testing applications including tensile, compression, flexural, peel, tear and friction, Bluehill 2 has several new and unique added features.
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90° Angle Peel Fixture catalog number 2820-035
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Screw side-action grips provide a very simple and efficient method for holding test specimens in a wide range of applications. The dual - acting design of 2710-100 series grips means that jaw faces can be adjusted to accommodate different specimen thicknesses. This ensures that the line of tensile force remains concentric with the grip body. They can be equipped with a selection of interchangeable grip jaw faces in various sizes and choice of surfaces including smooth ground, rubber-coated and serrated. Line contact and special coated faces are also available. The unique ‘snap-on’ jaw face attachment makes changing faces extremely quick and simple.
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