Rubber compounds are one of the most complicated structured material in the world and at the same time the most flexible one. Its capability to assimilate particle filters such as carbon black, silica, and clay in itself and producing a wide range of properties makes the material preferable for almost every industrial application. Industries or manufacturing units requiring impact resistance and toughness in their products often demand rubber and elastomer compounds. Products which requires elasticity during stretching and recoil, rubber and elastomers are known to be the ideal materials used for its manufacturing. Hence, it is important to assure that the rubber material used in your industry is delivering all the properties without any quality loss. In this blog post, we will learn about one of the most important quality testing methods used for rubber, i.e. testing the cut-growth resistance of the material using De-Mattia flex tester.

Application of Rubber Compounds

Rubber compounds are utilized for manufacturing shoe soles, tires, gaskets, belts, and pulleys. Latex gloves are produced from natural rubber having low vulcanization and almost zero filters. Polyamide-based elastomers deliver the highest strength and toughness properties and are utilized for manufacturing products for top of the line clothing and sports gear. For industries conducting moulding activities and want the process to be economical, thermoplastic rubber (TPR) is the prime choice. Silicone-based elastomers and fluoropolymer elastomers are also utilized in high-temperature applications.

Evaluating Crack-Growth Resistance of Rubber

The properties of rubber such as flexibility and flex fatigue resistance are the main reason behind polymer selection for specified products. The cut-growth resistance is an added dimension to flex fatigue and is frequently evaluated under bending strain or high extension strain conditions. Standard testing methods designed for evaluating dynamic fatigue in rubber specimen simulates the continuously repeated deformation experienced during servicing by many rubber articles, such as tires, belts, footwear, and various moulded goods. These kind of distortions which are formulated by the testing instruments are real-life attacks such as extension, compression, and bending forces or combinations of them.

De-Mattia flex tester is precisely constructed to evaluate the flex-fatigue resistance of vulcanized rubber under repeated tensile distortion at room temperature. It computes the resistance to cracks or elongating cracks of the sample on applying force. The testing machine offered by Labtiger is manufactured as per the testing standards of ISO 3400(Part-8)-2012, ASTM D430-2012, ASTM D813-2014, IS 3400(Part-7).

Testing samples are clamped having one end in a stationary grip and the other end in a movable grip. The bending degree and the speed can be managed as per the material requirements. The test can be carried out until the first small sign of cracking is detected on the sample.

For more information on the instrument or to get a quote, kindly reach out our technical team.