Mechanical Strength Analysis of Ionic Resins


Alfa Chemistry provides testing services for the mechanical strength of ion exchange resins. When the resin rubs against each other during use, as well as the expansion and contraction of the resin and the pressure on the surface during each operating cycle, the resin will be broken and crushed. Therefore, the detection of the mechanical strength of the resin is related to the service life of the resin. We can provide mechanical strength testing solutions for resins that need to be used in special environments, and provide customers with suitable products. It can speed up the project process and help customers save costs.

What is the mechanical strength of ion exchange resins?

The mechanical strength of ion exchange resin mainly refers to the ability of ion exchange resin to withstand physical wear and penetrating impact. It is one of the important indicators for evaluating resin quality. Resin particles have changes such as transfer, friction, expansion and contraction during use, and there will be a small amount of loss and breakage after long-term use, so the resin must have higher mechanical strength and wear resistance. Generally, resins with a low degree of cross-linking are more likely to be broken, but the durability of the resin is more mainly determined by the uniformity of the cross-linked structure and its strength. Such as macroporous resin, with a higher degree of cross-linking, the structure is stable, and can withstand repeated regeneration.

Analytical methods

The strength of ion exchange resin is its ability to withstand various external forces in actual use and maintain the integrity of its particles. Since it is impossible to simulate various external forces that often change in actual use in the laboratory, the sphericity after attrition or osmotic-attrition are used to express the strength under relative conditions.

  • Sphericity after osmotic-attrition
  • Through a certain concentration of acid, alkali treatment to impose permeability on the resin, and then apply pressure and friction to the resin through the roller milling of the ceramic balls. The resin subjected to these three forces is dried until it can roll freely and is separated. The mass fraction of the spherical particles in the sample is the sphericity after osmotic-attrition.

  • Sphericity after attrition
  • After applying pressure and friction force to the resin by roller milling of ceramic balls, the. resin is dried until it can roll freely and is separated. The mass fraction of the spherical particles in the sample is the sphericity after attrition.

Our Goals

Our Goals

Alfa Chemistry is a company with advanced resin analysis technology. Our pursuit is to provide you with comprehensive resin analysis services, aiming to help you efficiently solve the problem of improving product quality and accelerating the research and development of new materials. Relying on the cooperation with various enterprises and institutions, we have accumulated many years of industry experience, and we guarantee that you will receive the most professional analysis services. We are accelerating the construction of an integrated platform to better respond to customer needs. If you have any questions about resin analysis, you can directly contact us. We are dedicated to provide you with quality services at any time. We look forward to your inquiry.

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