Outsource your rubber compounding requirements to the experts for quality and consistency. With over 100 years’ collective experience in the local rubber industry and across Africa, NRM is your specialist provider of customised rubber compound. We deliver an accurate, consistent, quality compound to the market quickly at competitive prices – batch after batch. Why Outsource? Many rubber
which a particular rubber compound becomes crystalline and is stiff and brittle. At this point many molecules will be aligned and the com-pound will cease to be liquid or elastic. Time at a given temperature may also be required as some polymers need time to develop this crys-tallization. Testing is performed per ASTM E 1640 The Brittle Point of a compound is the tempera-ture at which the
Summary of Test Method 4.1 The compound rubber is torn or cut to expose a fresh surface for examination by the eye, aided preferably by a hand lens or a low-power binocular microscope. The dispersion level of the carbon black is compared against a series of ﬁve photographic standards and then rated numerically from 1 (very low) to 5 (high) (see Fig. 1). 5. Signiﬁcance and Use 5.1 Visual
24/10/2015· vulcanization characteristics of vulcanizable rubber compounds. * The similar test can be used as r eferen ce is ISO 3417 . Cure meter Assely . Cited from: ASTM D-2084 Document . …
2 Compound Processing Characteristics and Testing John S. Dick 2.1 Introduction The processing of a rubber formulation is a very important aspect of rubber compounding. Also, it is important to understand the rubber properties needed for good processability and the tests performed to measure these properties. 2.2 Manufacturing Process
In filled rubber compounds, carbon-black particles form a network of mutually interactive agglomerates that can be measured and quantified using a simple D-RPA 3000 Matrix test. Storage shear modulus (G’) results at low strains (e.g. +/- 1%) are typically high and get reduced after a larger strain amplitude (e.g. +/-50%) is applied for a short period of time.
RUBBER COMPOUND. TMS Rubber could produce, test, and deliver rubber compounds based on the customer specifiions. TMS Rubber can produce customer-based recipes or is able to create recipes regarding the products that the customers demand. TMS Rubber provides high-quality rubber compounds by applying several tests during the process. There are several industries, including …
11/8/2017· Ozone (O3), resistance is used to test the relative ability of the rubber compound to resist outdoor weathering or ozone chaer testing. Some appliions like door and window trim would be subject to weathering so testing would give an estimation of how the rubber compound will react to weathering. Other sources of ozone exposure include air purifiers and ozone generators used to purify
Rubber Process Analyzer (RPA) The rubber process analyzer is an extremely important tool for product research and development across every industry that uses rubber materials. The RPA measures the viscoelastic properties of both polymers and elastomeric compounds. Data is gathered before and after cure. This test method informs production
Rubber Compound Specifiion Test Standard Specifiion* Density ISO 2781 Max 1.20 g/cc Polymer (rubber) ASTM D6370 Min 45% Carbon Black ASTM D6370 Min 20% Ash ASTM D297 Max 5% Rubber filler ratio >1.2 [Insert name of specifier] will submit this sample to an independent third party for testing, to ensure that the final product adheres to the compound specifiion listed above. Please note
Rubber Testing & Rubber Analysis. Polyhedron Laboratories employs the latest in technology and science to serve our clients. We are apremier rubber testing laboratory. We employ a comprehensive array of analytical methods and wet chemistry techniques to present accurate and intensive rubber testing …
This test helps us to design the rubber compound based on its appliion and service conditions. Test Method: ASTM D695, ISO 604. Charpy Impact: This test helps in determining the material resistance to impact from a swinging pendulum. This test provides comparative values for various plastics easily and quickly. In this test, as in a flexural test, a standard test bar, 80mm long and with a
Elastomer Research Testing B.V., generally known as ERT B.V., is an independent and ISO 17025 accredited test and research laboratory, specialized in elastomers. Part of our core business is quantitative and qualitative chemical analysis of rubber materials.
ARDL has a full staff of experts in the rubber, plastics and testing fields available to provide technical training. A variety of training topics are listed
Physical Testing of Rubber Products3 D 412 Test Methods for Vulcanized Rubber and Thermo- plastic Elastomers—Tension D 1349 Practice for Rubber—Standard Temperatures for Testing D 3182 Practice for Rubber—Materials, Equipment, and Procedures for Mixing Standard Compounds and Prepar- ing Standard Vulcanized Sheets D 3183 Practice for Rubber—Preparation of Pieces for Test Purposes …
Chapter “Rubber Compound and Vulcanizate Testing” is related to the chapter on “Rubber Raw Material Testing” and provides a comprehensive description of the system of testing rubber compounds, materials and vulcanizates, starting from sampling and testing vessels up to evaluation of test results according to specific standards. The chapter is divided into four parts as follows
This test method provides a thermogravimetric technique to determine the amounts of organics (oil, polymer), carbon black, and ash (filler) in a rubber compound.The thermogravimetric technique employed during TGA analysis involves measuring the mass of a sample over time as the temperature changes. By measuring the change in mass, TGA provides important insight into various physical and
Definition of the American Society for Testing and Materials (ASTM) Resistance of rubber compounds to media; gases and fluids As used throughout this manual, the term "media" denotes the substance retained by the rubber compound. It may be a liquid, a gas, or a mixture of both. It can even include powders or solids as well. The chemical effect of the media on for instance a rubber O-ring
2/8/2013· ODR Cure Test. The sample is placed between the two dies. A rotor, placed in the middle of the dies oscillates with either ± 3 degrees or ± 1 degree at 1.7 Hz oscillation rate. This action exerts a shear strain on the test piece and the torque (force) required to oscillate the disc depends upon stiffness (shear modulus) of the rubber compound.
The T-50 test can be used to determine the effect of reclaimed rubber on the rate of cure of a compound by comparing the slopes and positions of the T-50 curves at various curing times; conclusions reached in this way can be substantiated by free sulfur data. The T-50 test appears to be somewhat more sensitive for this purpose than tensile and modulus tests. 4. T-50 tests on the reclaim …
ARDL can test your materials to estimate the ability of a rubber compound to withstand the effects of weathering or atmosphere exposure under controlled amounts of ozone. Measurements are made on the surface cracking of the material to estimate performance in service appliions. Our experts will work with you to determine the appropriate specifiion or exposure time and level. ARDL also
29/7/2015· ASTM D575 is a testing specifiion that determines the compression-deflection characteristics of rubber compounds. This test method is applicable to all rubber compounds other than hard rubber and sponge rubber. Deflection is the change in thickness of the specimen upon appliion of a compressive force. This method involves one kind of compression stiffness …
rubber test piece to extend by the tearing of the rubber when it is stretched, under constant rate, in a direction perpendicular to the plane of the cut. Universal Testing Machines 4. Set, Creep and Stress Relaxation The deformation that remains in an elastomer after . the removal of an applied stress or strain is Permanent Set. When a constant load is applied to an elastomer the deformation
Physical Property Testing. At Satori Seal we have our own in–house Quality Control Testing Laboratory where we test and measure the physical properties of the rubber compounds for our seals and gaskets. By performing physical property testing we can assure that our customers are getting quality products and compounds they select.
improved method of evaluating rubber compounds. / 2. ARDL Continuous Compression Stress Relaxation Test 2.1 Apparatus The ARDL continuous compression stress relaxation (CCSR) apparatus is shown in Figure 1a and Figure 1b. The apparatus consists of 5 fixtures, sitting inside the temperature. chaer. ln each fixture, the specimen is placed betv-iaen the base plate and compression plate. The
The rubber compound is introduced under pressure into the test chaer, made up of two halves. Inside the test chaer a disc is rotated by means of a motor. To avoid rubber slippage during the determination, both the chaer walls and the rotor surface are striated. The conversion of the torque into viscosity units is made by means of a calibrated flat spring anchored to the rotating disc