This machine is designed to get the characteristic curve and characteristic parameters of rubber vulcanization by measuring the applied moment of rubber to the oscillating dye body. NG-ODR rotor-free vulcameter has an excellent stability of results. The data and diagrams can be used as a reference for development, research and production quality.
NG-ODR describes precisely and quickly the curing and processing characteristics of vulcanized rubber compounds. It works on a very simple principle. A test piece of rubber compound is contained in a sealed test cavity under positive pressure and maintained at a specified elevated temperature. A Rotor (oscillating disc) is embedded in the test piece and is oscillated through a small specified rotary amplitude. This action exerts a shear strain on the test piece and the torque (force) required to oscillate the disc depending on stiffness (shear modulus) of the rubber compound.
|Temperature Range||3Room Temperature to 22°C - 200°C|
|Temperature Accuracy||Within ±0.3°C|
|Temperature Display Resolution||0.1°C|
|Oscillation Frequency||1.6Hz, (100r/min)|
|Torque Range||25, 50 , 100, 200 lb-in - Four settings or set by user|
|Swing Angle||± 0.5° ± 1° ± 3°|
|Air Pressure||65psi (4.6 bar) - Not including air compressor|
|Dimension (W x D x H)||131x56x62cm|
|Power||110V/60Hz or 220V/50Hz|
For Torque characteristics, the MI (Initial torque), ML (Minimum Torque) and MH (Maximum Torque) can be ready from the Cure Curve. Time values are indicated as ts2 (Induction time), ts5 (scorch time), tc50 (optimum cure time) and tc90 (optimum cure time). Finally, the derived values consist of the curing rate "CR", the Thermoplasticity (Tp=MI-ML) as well as the Reversion time "RT".
The Cure Curve is the measure of Torque Vs Cure Time and is a clear indication of all the rubbers vulcanization characteristics. The Cure Curve, or Rheograph, is separated into three phases. Phase 1 provides a good indication of the processing behavior of the compound. Phase 2 provides the technician with information on the curing characteristics. Phase 3 supplies information on the physical traits and properties of the rubber compound.
A test specimen of a rubber compound is contained in a sealed test cavity which is held under a positive pressure and maintained at a specified elevated temperature dictated within the ASTM or ISO standard. A rotor (biconical disc) is embedded in the test specimen and is oscillated through a specific rotary amplitude. The rotor exerts a shear strain on the specimen and the torque required to oscillate the rotor depends on the toughness of the compound.
The vulcanization of rubber is defined as the curing of elastomers – in other words, it is the analysis of the processes involved with the hardening of rubbers. Knowing the characteristics of the vulcanization process can help determine the rubbers rigidity and durability, as well as other mechanical and electrical properties of the material.
The Rheometer is used to evaluate test batches and ensure consistency. Since materials are mixed in batches, there can be variations which need to be controller and limited to ensure a consistent product being produced. By testing material from different batches, production environments can set acceptable upper and lower control limits, ranges, the mean and standard deviation with reference to Rheological parameters. With this information, future batches can then be tested and easily fit within set Pass/Fail criteria.
The Rheometer allows for the curing characteristics of the Rubber Compound to be evaluated while also monitoring the processing characteristics and the physical properties of the test specimen. The "Cure Curve" provided after the test is the diagnostic of the compounds vulcanization and processing character.
The testing results of the Oscillating Disk Rheometer can be used for quality control in rubber manufacturing plants, for research and development on raw rubber compounded in an evaluation formulation and for analyzing raw materials in the preparation of rubber compounds.
HPEIII is NextGen's advanced German line of equipment that is the new generation of HPE systems ideal for various plastic and plastic compound testing. The new system enhancements offer advantages including temperature sensor, reading values of ambient temperature and humidity, historical hardness value display, larger LCD display, standard USB connection and much more. These advanced portable systems can be paired up with either manual or automatic motorized test stands to help eliminate the human error factor and maximize accuracy and repeatability between test when switching from one operator to the next.
NextGen is proud to present our German line of fully-automatic Shore, IRHD and VLRH hardness testing system for plastic materials, plastic and foam compounds for the ultimate precision, accuracy and repeatability, exceptional ease-of-use and maintenance. Experience the industry leader for specimen testing including rubbers, plastics, foams, composites, o-rings, and more.
GenKron is used together with a special balance for testing the abrasive consumption of materials. The measurements are done through volumetric loss of a rotating specimen exposed to the action of a standard grinding wheel. It is especially suited for testing harder materials such as shoe soles, tires and other rubber materials.
GenDin, is designed to conform to the ASTM D5963 and IS0 4649 standards. This top quality and highly popular abrasion tester will allow you to measure the abrasion resistance of rubbers (vulcanized thermo set rubbers and thermoplastic elastomers) that are subject to abrasive/frictional wear on their actual service. Since wear is always a result of abrasion, different test methods have been developed for the simulation of long term wear.
GenFlex tests the ability of rubber products to withstand repeated flexing without developing cracks is of prime importance where such products are used in conditions undergoing repeated flexing. Flexing endurance of rubber products is determined by simulating in laboratory the action of flexing repeatedly under standard conditions of speed, mode, and degree of flexing.
The machine is used to test the dyeing of the fabric, and the fade degree of the leather after dry or wet rubbing. The test method involves the specimen to be fastened to the base of the crocking meter and rubbed with an abrasive hammer attached to a wet or a dry cloth under controlled conditions. The transfer of colour is then measured using a scale to evaluate the rating of the specimen's dyeing grade.
GenFreeze is specially designed to test the characteristics of various materials in a cold environment to ensure suitability for use in a cold climate. Based on the testing demand, adjust the beater and flexing grip, then load to the desired position. It can be used to test rubbers, leather, and plastics, PU leather etc. The unit can be adjusted to meet different requirements.
GenDale is mainly used to test shoe fabric, shoe lining, and many other types of shoe related materials. The unit can test up to four specimens at the same time for abrasion. The fabric specimen is measured by having rubbing applied on it via a complex direction of back and forth motion. The accuracy of abrasion strength is determined by the specific number of cycles conducted until a hole appears in the test area of the fabric specimen.
GenMooney is a viscosity testing machine is applied to measure the viscosity of the unmixed or mixed unvulcanized natural rubber, synthetic rubber and regenerated rubber .This tester has many functions such as fast warming, maintaining temperature, data stability, etc. It is equipped with an automated calibration feature for a simple data calibration of each experiment.
GenNBS is used to test the abrasion resistance of vulcanized rubber or other rubber compounds. It is commonly used for the soles and heels of footwear. It has an intelligent power failure recovery system. The unit conducts measurements through volumetric loss of specimens exposed to the action of a normalized abrasive medium secured to a rotations cylinder.
GenSalt is designed to test the surface of different materials for resistance to corrosion. The unit is commonly used to test coated materials of a metallic nature in a controlled corrosive environment. The test can be used on rust-proof painting, anodizing, electroplating and rust-proof of grease. The machine imitates expedited corrosion process via salt spraying on a given test sample to identify the corrosion (oxides) resistance. Test results are based on the longevity of time a material can resist visible corrosion on the test sample.
The machine is designed to test the abrasion resistance of fabrics and metals. The abrasion of fabrics is tested when the specimen is pulled over the frame and rubbed against an abradant over a curved surface. The number of cycles, also known as double rubs, conducted on the specimen before the fabric shows visible wear is used to determine the rating of abrasion.
GenRebound tests the resilience of rubber compounds. The machine must be adjusted in a horizontal position and the plunger raised at a specific height. The plunger is then released onto the specimen for a given number of impacts. The measurements are based on the 4th, 5th, and 6th impacts. The average of the three (3) measurements is then calculated for the test result. The machine is highly useful in production of compounds designed to absorb vibration or shock according to the ASTM standards.
GenTaber used evaluate abrasion resistance. It can conduct tests on a wide range of materials such as: cloth, paper, paint, plywood, leather, tile, glass, rubber etc. It tests the specimen by rotating it while in contact with the grinding wheel and applying the required pressure. The Joss of weight reflects on the change in weight of the specimen. The unit also has an intelligent power failure recovery function.
Description The NG-DM-A Series offers high-accuracy digital Densimeters designed for a wide variety of material testing needs. These elegant and compact systems offer capacity ranges from 150g to 3000g with accuracy of 0.001g/cm3 down to 0.0002g/cm3. Application: The system is […]