Environmental Stress Cracking

determining a polymer material's susceptibility to stress cracking when exposed to different environments

Product DescriptionEnvironmental Stress Cracking. is one of the most common causes of unexpected brittle failure of thermoplastics polymers known. Research has shown that the exposure of polymers to liquid chemicals accelerate the crazing process.The Ray-Ran Stress Cracking Apparatus has been designed in accordance with the ASTM D1693 test method, it is simple to use and an extremely cost effective method of determining a polymer material's susceptibility to stress cracking when exposed to different environments such as soaps, wetting agents, oils and detergents.The material is cut to shape with the die cutter provided and notched and then the test sample bent into a "U" section to induce the required stress. The samples are placed into the sample holders which are then transferred to the glass test tubes. These tubes are filled with the selected environment and heated. At timed intervals the samples are checked for any cracks developing adjacent to the notch. The number of failures is recorded.Standard features includeDigital temperature display and control, Constant temperature controlled stainless steel liquid bath, Sample Cutter to cut out test samples, Sample nicking jig to make the controlled imperfection in the test samples, Sample bending clamp to bend the test samples into a controlled "U" shape, Specimen holders to house the test samples in the test tubes (up to 10 test samples can be housed in each specimen holder), Sample transfer tool to move the test sample from the clamp to the specimen holders, 48 glass test tubes and rubber stoppers, Product user manual, CE mark of conformity, 1 year return to base warranty,

Test DescriptionThe test sample is notched and then bent into a "U" section to induce the required stress. The samples are placed in the glass tubes, filled with the selected environment and heated. At regular intervals the sample are checked for any cracks developing adjacent to the notch.

Part NumbersRR/ESC - Environmental Stress Cracking Apparatus, --- ESC 029 - Spare Pack of 10 Nicking Blades

Complies with Standard(s)ASTM D1693

Environmental Stress Cracking