About Some Knowledge of Rheometer

A rheometer is a device that was developed to measure how a liquid’s suspensions or slurries flow when force is applied to it. Many fluids can be tested with a rheometer when a single numerical viscosity value cannot determine them due to their components. A rheometer can also be used to discover the additional parameters and values that a viscometer can correctly measure. In other words, the rheometer tests a fluid’s rheology.

 

There are two types of rheometers that test a liquid’s rheology. There is an applied shear stress/strain option that is known as a rotational/shear rheometer. It is designed to measure native strain and can provide valuable data for measuring the liquid’s shear stress. The other type is a native stress controlled rheometer. It is used to control the application of a defined stress/shear that measures the strain of the shear as a result. But we only talk about shear rheometer series in this article.

 

What does Rheometer Mean?

 

The word Rheometer comes from a Greek word that means “measuring flow.” Therefore, the device created for this task was dubbed the rheometer. The word rheometer has historically been used to refer to different types of measurement devices. First, it was the name of the device that measured electric current until a new word was created to replace it (the galvanometer or ammeter). It was also the name of the medical tool used to measure blood flow. Rheometer was also the name of the civil engineering tool used to measure water flow. After the term rheology was defined, the tools previously referred to as rheometers were renamed.

 

Rheometers that Measure Shear

 

There are a wide variety of rheometers that measure shear in different ways. Though these have slight differences, they generally offer the same kind of information. The following are the available shear rheometers:

 

Pipe or Capillary – The pipe or capillary rheometer is designed to measure a liquid that is forced through a tube. This makes it possible to measure a constant cross section and dimensions that define the laminar flow of the fluid. Shear rate can be determined via the dimensions measured from the liquid’s flow rate and pressure drop, which are converted into the proper shear stress measurement.

 

Rotational cylinder – This is a cylinder and a one-plate measuring system, where the liquid is placed within the small ring space of a cylinder that is inside another. The cylinder is then rotated at a speed that makes the shear rate measurable. The torque of the force that is needed to turn the other cylinder is then used to convert the shear rate into shear stress. A modern day rotational cylinder apparatus may be able to spin at 600, 300, 200, 100, 6 & 3 RPM to measure the shear stress of fluids. Modern day options can also be programmed to measure these values at changing intervals, which can measure important time based readings.

 

Cone and plate – Here, a liquid is placed on a flat plate as well as a short, shallow cone that is placed on top. The cone is typically at a one degree slant. The plate is rotated and the force exerted on the cone is measured. Oscillating versions of this rheometer can measure additional values such as elasticity.

 

Ektron Tek Co., Ltd. is a rheometer manufacturer which has professional research and maintenance team. With more than 30 years of experience and technology, we have marketed our products worldwide with our brand EKTRON TEK. Thanks to continuous efforts and innovation, we have gained the trust and compliments as a world-reputed company from our customers and have maintained the leading position of rubber testing instruments industry in Asia. If you need more information about rheometer series, welcome to visit our website and feel free to contact Ektron Tek.

 

Article Source: http://www.tech-faq.com/rheometer.html

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Mooney Viscometer Machine: Overview and Main Functions – Ektron Tek

A mooney viscosity machine is an instrument used for measuring the mooney viscosity of a substance (mainly elastomers and rubbers). Invented by Melvin Mooney, it contains a rotating spindle and heated dies, the substance encloses and overflows the spindle and the mooney viscosity is calculated from the torque on the spindle.

 

Ektron Tek is a professional rubber testing equipment manufacturer. We provide types of rubber testers for customers. Today, we are going to simply introduce Mooney Viscometer Machines.

 

EKT-2003M Model Mooney Viscometer
EKT-2003M Model Mooney Viscometer Machine

 

 

  • Main functions of viscometer rheometer below:

– Mooney Rheometer Viscosity Test: A determination of the viscosity of raw rubber or compounded rubber.

– Stress Relaxation Test: A determination of stress relaxation of a rubber.

– Pre-Vulcanization Test: A determination of the features of compounded rubber during the early stage of vulcanization.

 

  • Power Law Decay Model

 

  • Provide various quality control function to check the test results of mooney value and scorch time; more than 18 points of time relating to mooney value setting enable the user to control the quality of mooney value at any time of test curve.

 

  • SPC software of mooney viscometer can draw and analyze the test results of mooney values and scorch times such as X-MR, X-R, histogram and normal distribution.

 

Have you had a basic understanding in Mooney Viscometer? If you are interested in rubber testing equipment series, welcome to visit the website of Ektron Tek – high quality and high accuracy rubber testing machines provider.

 

Article Source: https://en.wikipedia.org/wiki/Mooney_viscometer

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Importance of Rubber and Ozone Test Chamber in Industries

Rubber is a versatile material that is used in various industrial and domestic applications. All across the globe, the natural rubber is extracted from trees. The natural rubber is very soft and is in a thick liquid form. Rubber of this kind does not have many usages. The natural rubber is purified and gives an end product called polyisoprene. Rubber of this kind can also be synthesized by artificial methods. The synthetic rubber has extensive industrial usage as compared to natural rubber.

 

They are used for making tires, household products, tubes, industrial hoses, industrial cushions and so forth. Rubber also has a high usage in the construction field for flooring, matting, etc. The material is also used extensively in manufacturing medical products such as surgical gloves, catheters etc. the molecular structure of rubber consists of a long interlinking polymer chains that make it ideal for usage in a vast variety of industries.

 

The Natural rubber is not completely fit for industrial usage hence the process of vulcanization is used to increase the properties and strength of the material by adding sulfur to it. After, vulcanization the strength of the material is increased significantly, making it fit for industrial usage.

 

As vulcanized rubber has extensive usage in industries, it is essential to test the various properties of the materials and the end product so that the manufacturers can ensure the best quality provided to their customers. There are many different properties of rubber that need to be tested before commencing the manufacturing process. This helps in avoiding enormous rejection of end products. These tests conducted on rubber include tensile strength, compressive strength, the effect of aging, etc. An important testing procedure that is conducted on rubber materials is testing under ozone environment – ozone test chamber is required at this moment.

 

An ozone test chamber is used for testing the effects of ozone on a rubber product or material under controlled conditions. When the rubber is exposed to ozone for a longer time, there are significant changes in the properties of the material such as breaking strength, tensile strength, etc. The ozone test chambers help in detecting the amount of change that takes place in a testing sample after it is exposed to ozone in the ozone test chamber.

 

Another major testing instrument that is used for quality testing of rubber is the shore hardness tester. A shore hardness tester is used to test the hardness of a rubber material under specific load. This helps in determining the viscoelastic properties of the materials and helps in predicting its suitability for a certain usage. The use of rubber products in today’s industrial scenario is inevitable, but proper testing procedures are essential to make sure that the best quality products are provided to the customers.

 

Ektron Tek, the leading manufacturer of testing equipment, helps their customers by providing the high-quality Ozone Test Chambers and assists them in enhancing their productivity. If you need further details about rubber testing equipment, welcome to contact us for more information!

 

Article Source: http://EzineArticles.com/expert/Dhananjay_KR_Pandey/2107667

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Best Vibration Simulation Machine Provider in Taiwan – Ektron Tek

VS-2001 Vibration Simulation is an intelligent rubber testing instrument which measures the dynamic behavior of rubber compound and simulates the behavior in different temperature environment. It provides the function of traditional Goodrich Flexometer and measures the elastic & viscous modules as well. VS-2001 Vibration Simulation is suitable for predicting the heat-build-up of rubber and getting the information of dynamic behavior in the rubber industry.

 

Our simulator is designed to obtain information about the properties of material and products with broadest range of testing capabilities and computerized testing systems. This testing instrument provides static & dynamic tests and data collection by professional software system. The VS series, a new generation of vibration simulations from Ektron Tek, will provide you a powerful and reliable analysis system.

 

For the vibration analysis research, the VS series have the most reliable and cost-effective testing solutions. The systems is designed to measure the damping coefficient the elastic coefficient (Kd Ks), the viscous coefficient and the loss coefficient (tan), modules analytic data offers greater insight into rubber compounds. In conclusion, the VS2001 is designed for the application of rubber compounding.

 

Environmental Chambers Optional temperature control chamber enables user to study the dynamic properties of specimens at the simulating environment of temperature variety. Many types of plastic and rubber materials may have tremendous change of their mechanical properties under stimulated environmental condition. According to the latest research of rubber material, especially in automotive and other rubber related industries, it is very important to know the behavior of materials in different environmental.

 

Ektron Tek offers complete product line of temperature chambers depending on the requirements of testing rubbers, composites, and elastomers.

 

Note: Customers can provide information of testing environment, for instance: Static force capacity, Dynamic force capacity, Max frequency (sine wave) and Max stroke of actuator etc. Ektron’s technical team will help customers to select the most suitable instrument.

 

With years of experiences in manufacturing rubber testing machinery, Ektron Tek provides the best vibration simulation machines to our clients. Our vibration testers featuring high efficiency and accuracy, which is the smartest choice for you! In addition, we also manufacture full series of tire testing machines, tensile testers and rheometers. Please feel free to send inquiries to us and we will reply you ASAP!

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Understanding Tensile Tester

Tensile tester is a machine that is used to measure ultimate tensile strength, elongation and reduction in the crossectional area of the material by subjecting it to axial force. The test is carried out to know how a material will react to different type of forces in the field so that weakness are pinpointed and necessary remedial measures are taken to prevent failure in manufactured goods.

A Universal Tensile testing machine, popularly known as UTM, is widely used by laboratories to test the tensile and compressive strength of the materials. The main purpose of this tensile tester is to establish maximum stretch limit of any material, before its breaks. It is used to test strength of various materials like rubber, plastic, steel etc, which are used in manufacture of different types of goods.

The Universal tensile testing machine helps to establish the ductility of metal. This property of metal allows it to retain its original shape after the load is removed, without any alteration. Through testing one can know the range of elongation and breaking point (point-of-no-return to original shape). Tensile strength testing machine helps manufacturers of industrial raw materials, semi-finished and finished goods get right information about the elongation, elastic limit, yield strength and yield point of their materials and avert any operational failure due to undetected weakness in the material. This machine ensures satisfactory compliance to industrial safety regulations and manufacturing practices.

The UTM has two crossheads, one is adjusted to accommodate the length of the specimen and the other one is hydraulically or electromagnetically driven to produce the tensile strain on the specimen. The machine generates enough force to fracture the specimen, in quick or slow way to mimic the action of force in actual field conditions.

Tensile tester measures minute change in dimensions to show exact behavior of the material under stress. This helps to build reliable testing report so that inherent weakness in the material are accounted and taken in consideration during the manufacturing process. Besides this tensile tester helps quality control engineers to ascertain the tensile breaking point or yield point of their finished goods before they are sent into the market. There are many types’ models of Universal tensile testing machine available in the market; however they generally have few common points that are mentioned below:

  • Anti-Backlash system
    • Electromagnetic or Hydraulic powered movement of one crosshead
    • Emergency stop through rocker, mechanical switch or computer
    • Crosshead guidance system
    • Quick disconnect load cell and fixture system

There are many suppliers of tensile testing machine in market and price of the tensile testers varies according to the technical features offered, models and the functionalities. It is in best interest of the user to thoroughly analyze the different models, their price and ascertain that how a said machine can benefit them in optimum manner.

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Article Source: http://EzineArticles.com/?expert=Nikhil_Jaiswal

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