Author Dilip Dhupia Application Engineer, India If you’re reading this, you probably already know that it was Charles Goodyear who invented the vulcanization of rubber, and not Mr. Spock (although the whole time-space continuum can be a bit dodgy.) Like the discovery of Champagne, the process for hardening rubber was a happy accident. In 1939 […]
Author Jessica Gialamas Application Engineer, Americas This blog highlights seven important factors that affect your rubber mix, how that can change the quality of your mix, and how a rubber process analyzer can detect these changes. Introduction Mixers have an extensive history, deriving from single rotor wooden mills developed in the 1820s. This technology advanced […]
Author Dilip Dhupia Application Engineer, India Dispersion of fillers is crucial and often a challenge for rubber processors. Measuring the Payne effect of rubber compounds can be used to monitor the quality of filer dispersion for process development and control. Read on to learn more about the Payne effect and how a Rubber Process Analyzer […]
Author Alpha Technologies So, there’s good news, then bad news, but then good news, again. The good news is you’re thinking of getting a Dynamic Mechanical Analyzer (DMA) to measure cured rubber specimens in tension for tire performance predictors. That will significantly increase your ability to improve the value and quality of your material. The […]
Whether you are extruding or injection molding, the production of foaming or blowing compounds can be a tricky business. An optimal test for the proper blow-cure balance of a sponge rubber compound must measure both reactions and viscosity precisely.
Alpha’s Premier Rubber Process Analyzer (RPA) has been readily accepted by the rubber industry for routine testing of rubber compounds. By adding a standard torque and pressure 2-in-1 transducer on the upper die, you are able to measure the torque as well as the cavity pressure simultaneously.
In this post, we’ll show you how to measure cure & blowing reactions.
Author Li Wan Application Engineer, China Does This Die Make Me Look Bloated? Rubber compounds are viscoelastic materials that are subject to die swell (also called the Barus Effect) and dimensional stability issues when processed by extruding or calendaring in the factory. Die swell is a phenomenon that occurs when the extruded rubber compound leaves […]
Author Li Wan Application Engineer, China Well, That’s Just Swell As we covered in Part 1 of this blog, die swell (also called the Barus Effect) occurs during extruding or calendaring in the factory. It’s when the extruded rubber compound leaves the extruder die with a greater dimensional diameter than the diameter of the extruder […]
Alpha’s engineers conducted a study in collaboration with the Hari Shankar Singhania Elastomer & Tyre Research Institute (HASETRI) in India to develop methods that accelerated testing of heat build-up properties of elastomer compounds from as much as 18 hours to about 30 minutes.
During testing at elevated processing or curing temperatures, compounds can release a variety of contaminants that can produce slippery surfaces, corrode dies and cause elastomer die seals to fail prematurely. These issues can cause data variation or artificial trends.
Author Alpha Technologies Alpha Technologies, the leader in rubber rheology testing, has released a new technology that solidifies their instrument’s reputation as the most versatile in the market. By extending their industry-leading Premier™ RPA to include Sub-Zero™ Technology, Alpha Technologies is giving tire manufacturers a more efficient, accurate way to perform compound testing throughout a […]