China
Africa
Explore chapters and articles related to this topic
Development and Mechanical Characterization of Coir Fiber-Based Thermoplastic Polyurethane Composite
Published in Atul Babbar, Ranvijay Kumar, Vikas Dhawan, Nishant Ranjan, Ankit Sharma, Additive Manufacturing of Polymers for Tissue Engineering, 2023
Jaspreet Kaur, Dharmpal Deepak, Harnam Singh Farwaha, Sulakshna Dwivedi, Nishant Ranjan
Compression set is often a property of interest when using elastomers. A compression set is the amount of permanent deformation that occurs when a material is compressed in a specific deformation, for a specified time, at a specific temperature. ASTM D395 Standard Test Method for Rubber Property – compression set is the test method used and it calls for the material to be 25% deformed for a given period. After a 30-min recovery time, the sample measurement is undertaken. The value derived is the proportion a material sample fails to recover from its original height.
Certification and Characterization of Photovoltaic Packaging
Published in Michelle Poliskie, Solar Module Packaging, 2016
Usually, elastomers return to their initial dimensions after the stress is removed. The polymer will lose restorative properties if the peak stress is high enough to break chemical bonds. Compression set is a measurement of the permanent deformation of the elastomer after the applied stress is removed. It is reported as the percentage of the height not restored once the weight is removed. For instance, a 100% compression set indicates there is no measurable recovery in the elastomer to its initial height.
Industrial Polymers
Published in Manas Chanda, Plastics Technology Handbook, 2017
Dimethyl silicone rubbers show a high compression set. (For example, normal cured compounds have a compression set of 20–50% after 24 h at 150°C.) Substantially reduced compression set values may be obtained by using a polymer containing small amounts of methylvinylsiloxane. Rubbers containing vinyl groups can be cross-linked by weaker peroxide catalysts. Where there is a high vinyl content (4–5% molar), it is also possible to vulcanize with sulfur.
Mechanical Characteristics of Sugarcane Bagasse Fibre Reinforced Polymer Composites: A Review
Published in Cogent Engineering, 2023
Mohd. Khalid Zafeer, Roopa Prabhu, Sithara Rao, GT Mahesha, K Subrahmanya Bhat
The objects were put through a variety of tests, including those for tensile strength, compression test, abrasion resistance, hardness, and elongation at break. As the filler loading grew, so did the material’s tensile strength, abrasion resistance, and hardness properties. Reduced filler loading also enhanced properties such as elongation at break and compression set. As a result, in Figure 12 the bagasse filler seems to be reinforcing in nature and has intrinsic reinforcing potential. This is because when more filler is introduced into the rubber matrix, the rubber chain’s flexibility is diminished, resulting in a stiffer vulcanizate (Osarenmwinda & Abode, 2010).