Search results with tag "Elastomers"
Compatibility of Elastomers in Neat Methanol Service
www.methanol.orgmethanol.org 1 Compatibility of Elastomers in Neat Methanol Service Elastomers and rubber compounds are widely used in methanol service as O-rings, gaskets, packing, and sealing materials to prevent leakage of methanol liquid and vapors into the surrounding environment. As originally used, the term rubber described
(a) Compute the repeat unit molecular weight of ...
www.che.uri.edudeform and (b) plastically deform, and (c) by which elastomers elastically deform. (a) and (b) The mechanisms by which semicrystalline polymers elastically and plastically deform are described in Section 15.7. (c) The explanation of the mechanism by which elastomers elastically deform is provided in Section 15.9
CHEMICAL COMPATIBILITY GUIDE - Global Supply Line
globalsupplyline.com.auFLUOROCARBON (FKM) — Fluorocarbon elastomers are in-herently compatible with a broad spectrum of chemicals. Be-cause of this extensive chemical compatibility, which spans considerable concentration and temperature ranges, fl uorocar-bon elastomers have gained wide acceptance as a material of construction for butterfl y valve o-rings and seats.
Thermoplastic Polyurethane Elastomers (TPU) Elastollan
www.basf.comElastollan® is the BASF group’s trade mark for Thermoplastic Polyurethane Elastomers (TPU). With the BASF group’s extensive experience in manufacturing TPU, BASF Japan Ltd. can provide customers with professional and responsible technical services. Our well-equipped laboratories and advanced production lines make it possible for us to
Thermoplastic Ployurethane Elastomers (TPU) BASF
plastics-rubber.basf.comThe hardness of elastomers such as Elastollan® is measured in Shore A and Shore D according to DIN ISO 7619-1 (3s). Shore hardness is a measure of the resistance of a material to the penetration of a needle under a defined spring force. It is determined as a number from 0 to 100 on the scales A or D. The higher the number, the higher the hardness.
Industrial sealing solutions - SKF
www.skf.comwide range of ruers, thermoplastic elastomers and other materials such as high performance plastics. SKF constantly develops solutions for high performance applications from these key material types Rubbers hese materials are etremely leile and can e stretched and delected by eerting relatively little force. any of them
Vaporized Hydrogen Peroxide (VHP®) Gaseous …
ispeboston.orgFeb 23, 2010 · Elastomers Buna N Fair Hypalon Excellent Butyl Rubber Good Polyurethane Excellent Chem Raz Good Silicone Rubbers Excellent EPDM Fair Kelrez Excellent Viton Excellent *Compatibility is defined as the materials ability to undergo exposur e to VHP with no significant changes in physical, or chemi cal properties (i.e. no
Food Contact Materials - Regulation (EC) 1935/2004
www.europarl.europa.eufour FCMs: plastics (including recycled plastics), ceramics, regenerated cellulose and so-called ... paper & board, metals & alloys, glass, coatings, silicones, rubbers, printing inks etc. However, as reported by the majority of stakeholders participating in this survey, the lack of ... thermoplastic elastomers TFEU - Treaty on the Functioning ...
Lecture notes on Structure and Properties of Engineering ...
www.wright.eduPolymers can be brittle (A), plastic (B), or highly elastic (C). Deformation shown by curve C is totally elastic (rubber-like elasticity, large recoverable strain at low stress levels). This class of polymers –elastomers. The description of stress-strain behavior is (somewhat) similar to that of metals Strains – deformations > 1000% possible
RUBBER CHEMISTRY - Läroverket i Småland AB
laroverket.comRubbers - elastomers - are polymeric materials characterised by their ability of ... • special - in addition to the basic elastic properties they have at least one special feature, such as resistance to aging, resistance to chemicals, ... This process is based on creation of
MATERIAL SELECTION FOR MECHANICAL SEALS
www.911metallurgist.comincluding metals, elastomers, and ceramics. Each of these materials plays an important role in the operation of the seal. Seal manufacturers have narrowed the list of available materials through years of successful field experience. Still, the selection of the correct materials remains a critical step in the successful applica-tion of a ...
World Plastics Production 1950 – 2015
committee.iso.org*w/o Other Plastics (ncludes Thermosets, Elastomers, Adhesives, Coatings and Sealants and PP-Fibers. Not included PET-, PA- and Polyacryl-Fibers), 2014 = ~53 Mio. t Source: PlasticsEurope Market Research Group (PEMRG) / Consultic …
Chemical Compatibility of Elastomers and Metals
www.emerson.comnames are Aflas ® (Asahi Glass Co., Ltd) and Fluoraz (Greene, Tweed & Co.). It is generally used where resistance to both hydrocarbons and hot water are required. Its temperature range is 20° to 400°F (-7° to 204°C). ECO - This is commonly called Hydrin® rubber, although that is a trade name for a series of rubber materials by B.F ...
Polymer-Modified Asphalt 101
pavement.engineering.asu.eduNov 12, 2014 · • Thermoplastic Elastomers –Styrene-BD-Styrene block copolymer – SB-, SBS –Monomers blocked in polymer backbone Typically 70/30 BD/styrene –Lower molecular weight – 100,000 g/mole 1300 BD “mers”, 288 styrene “mers” –Narrow distribution – all chains similar length Polymers for Asphalt Modification •
Materials and their Flow Properties - Dynisco
www.dynisco.comA thermoplastic is a plastic material that will soften (melt) on heating and harden on cooling. This softening (or melting) by heat and hardening by cooling can be repeated. This allows thermoplastic materials to be recycled. Synthetic Polymers Most commercial polymers and rubbers/elastomers are composed of molecules based on the element
Machined seals - SKF
www.skf.comThermoplastic elastomers – Polyurethanes ECOPUR ECOPUR is a thermoplastic polyurethane elastomer (TPU) and standard grade of the SKF machined seals range for sealing applica - tions in mineral oil It features excellent mechanical properties such as abrasion resistance, tear strength and low compression set Typical products made of ECOPUR are
Stress-Strain Behavior of Thermoplastic Polyurethane
web.mit.eduThe Alliance for the Polyurethane Industry (API) describes TPUs as “bridging the gap between rubber and plastics”, since TPUs offer the mechanical performance characteristics of rubber but can be processed as thermoplastics. This special niche of TPUs among other polymers and elastomers imparts high elasticity combined
An Engineer’s Guide to Specify the Right Thermoplastic
www.rtpcompany.comTHERM0PLASTIC ELASTOMERS • STRUCTURAL • WEAR CONDUCTIVE • COLOR • FLAME RETARDANT An Engineer’s Guide to Specify the Right Thermoplastic Steve Maki Vice President Technology . YOUR GLOBAL COMPOUNDER OF CUSTOM ENGINEERED THERMOPLASTICS Independent Specialty Compounder
POLYMERS - Btech College in Tirupati
aits-tpt.edu.incooling. These polymers possess intermolecular forces of attraction intermediate between elastomers and fibres. Polyethylene, PVC, nylon and sealing wax are examples of thermoplastic polymers. Thermosetting Polymers: Some polymers, on the other hand, undergo some chemical change on heating and convert themselves into an infusible mass.
Table of Contents - BASF Polyurethanes
polyurethanes.basf.uscoatings, adhesives, sealants, and elastomers (CASE). BASF MDI Products can be used in many applications within CASE and other markets. PMDI PMDI is a brown liquid, stable over a wide range of temperatures. It contains a mixture of polyaromatic isocyanates including 2-ring (MMDI), 3-ring, and higher molecular weight species.
Thermal Analysis of Rubbers and Elastomers
www.tainstruments.com10.87 mg of Tire Rubber Compound & PLQW R &L Q1 & PLQW R &L QD LU 0 2 4 6 8 10 12 (%/min) 0 20 40 60 80 100 Weight (%) 0 200 400 600 800 1000 7HPSHUDWXUH & Sample: Cured Tire Tread Rubber Compoun Size: 10.8690 mg File: CURED TIRE TREAD RUBBER COMPOUND.001 Run Date: 18-Nov-2005 12:06 Universal V4.5A TA Instruments
Data Sheets: MR98 Series Backpressure Regulators, Relief ...
www.emerson.com• Excellent Fluid Compatibility—Diaphragms come in stainless steel, Monel®, Hastelloy® C or elastomers and body is available in gray cast iron, steel, stainless steel, Aluminum-bronze, Hastelloy® C and Monel®. Corrosion-resistant trims are available. • Close, Stable Regulation—Diaphragm is isolated from the main flow stream.
Thermal Analysis of Rubbers and Elastomers
www.tainstruments.comThermal Analysis is a series of complementary techniques to measure various properties of materials as a function of temperature and time Thermogravimetric Analysis (TGA) Weight loss, weight gain, compositional and thermal stability of a material. [Sorption Analysis] Provides information to aid in the interpretation of DSC data.
Thermoplastic Polyurethane Elastomers (TPU) - BASF
www.basf.comThermoplastic polyether polyurethane elastomer Property Unit of Measurement test Procedure 1170 a 10 1175 a 10 W 1180 a 10 1185 a 10 W 1185 a 10 1185 a 59 U 1185 a 10 M 1185 a 12 WM Hardness Shore A DIN ISO 7619-1 (3s) 71 75 80 83 8786 88 …
Chemical Compatibility Guide - Graco
www.graco.comJul 02, 2013 · CHEMICALS METALS PLASTICS, ELASTOMERS & LEATHER A: Excellent, B: Good, C: Fair to Poor, D: Not recommended - No Data Aluminum Carbon Steel Cast/Ductile Iron 304 Stainless Steel 316 Stainless Steel Acetal Buna CSM (Hypalon) EPR, EPDM Fluorocarbon Fluoroelastomer (FKM) Geolast (Buna &
THERMOPLASTIC ELASTOMERS - SO.F.TER. GROUP
www.softergroup.comA Thermoplastic Elastomer (TPE) combines the rubber-like properties of a thermoset elastomer and the processing characteristics of a thermoplastic. This is possible because TPE is composed of two phases: a soft phase, which provides elastic properties, and a hard phase which represents the thermoplastic segment and
Thermoplastic Polyurethane (TPU) Processing Guide
www.fostercomp.comThermoplastic Polyurethane (TPU) Processing Guide Injection Molding of TPU Foster Corporation formulates, manufacturers, and markets thermoplastic polyurethane elastomers (TPU’s). These TPU materials can be, and are, processed by a variety of techniques including thermoplastic injection molding.
PEBAX MATERIAL PROPERTIES
www.zeusinc.comlife saving medical devices. Today the family of nylon resins has expanded to meet the demands of a wide range of custom applications. Pebax® nylons have high elastic memory, better low temperature properties, and higher elongation at break than other thermoplastic elastomers. It is available with a Shore D hardness range from 35 to 72. This ...
Unit 15 New 18.10.2018 - NCERT
ncert.nic.inplastics, elastomers, fibres and paints and varnishes. The word ‘polymer’ is coined from two Greek words: poly means many and means unit or part. Themer term polymer is defined as very large molecules having high molecular mass (103-107u). These are also referred to as macromolecules, which are formed by joining of
An Overview of the Plastic Material Selection Process for ...
www.hcltech.comThermoplastic elastomers, Polydimethylsiloxane If a component is subjected to body tissue or fluid contact, the next question is how long it is in contact. This can be divided into three types. If it is <1 day, it is termed as short-term or limited. If the contact is between 1 and 30 days, it is termed as medium-term or prolonged.
COMPATIBILITY CHART - Rubber Group
rubber-group.comCOMPATIBILITY CHART Chemical Natural Rubber SBR, GRS Butyl EPR, EPT, EPDM Buna-N, Nitrile, NBR Hydrin Neoprene Hypalon Urethane, Polyurethane Polysulfide Silicone Fluorosilicone Fluoro Elastomers LEGEND A - RECOMMENDED B - MINOR TO MODERATE EFFECT C - MODERATE TO SEVERE U - UNSATISFACTORY BLANK - INSUFFICIENT DATA …
Elastomers Chemical Compatibility Chart from ISM
www.industrialspec.comElastomers Chemical Compatibility Chart ver 19-Dec-2018 It is the sole responsibility of the system designer and user to select products suitable for their specific application requirements and to ensure proper
MR98 Series Backpressure Regulators, Relief and ...
www.emerson.comShutoff Classification Per ANSI/FCI 70-3-2004 Metal Seats: Class IV Polytetrafluoroethylene (PTFE): Class IV Elastomer Seats: Class VI or better Sour Gas Service Capability Optional materials are available for applications handling sour gases. These constructions comply with the recommendations of NACE International
Chemical Resistance Guide - Gilson Eng
www.gilsoneng.com- (EPM) is an elastomer made from ethylene-propylene diene monomer. EPDM has good abrasion and tear resistance and offers excellent chemical resistance to a variety of acids and alkalines. It is susceptible to attack by oils and is not re com-mended for applications involving petroleum oils, strong acids or strong alkalines.
Hydrogen Peroxide Material Compatibility Chart
www.industrialspec.comHytrel® (polyester elastomer) X X X X LDPE A F1 F1 F1 Natural rubber B F F F Neoprene X X X X NORYL® A1 A1 A A . Hydrogen Peroxide Material Compatibility Chart ver 09-Jul-2020 ... TPU (thermoplastic polyurethanes) X X X X Tygon® B B B B Tungsten carbide X X …
Product Catalog - Flowserve
www.flowserve.comof elastomer O-rings under pressure ... cost of bellows sealed valves • Triple-sealed valve for lethal, toxic and sub-zero fluid services where an absolute stem seal is required – Primary: PTFE sleeve provides large, static seal for positive shut-off and extended service life
Elastomer Types and Chemical Compatibility
en.novotema.comElastomer chemical compatibility Elastomer Seal Selection Criteria 3 8 30 Novotema is a world-class designer and manufacturer of technical components and elastomer sealing solutions for demanding applications. With over 300 elastomer (rubber) material grades to choose from, Novotema is sure to have a sealing material to suit any application.
TREMproof® 250GC - Tremco Sealants
www.tremcosealants.comTREMproof 250GC is a one-part moisture-curing elastomer available in three viscosities: Self-Leveling (SL), Roller (R) and Trowel (trowel intended for detailing work only). ... coatings and expansion joints, which is essential for tie-ins, detailing and penetrations. • ®Compatible with Nudura Insulated Concrete Forms.
INSTALLATION PROCEDURE Detroit Diesel DD15/DD13
www.evanscoolant.comb. You may encounter a hose with an elastomer clamp. Use a torch to heat a screwdriver and then drag the hot screwdriver along the elastomer to melt it. On re-assembly, if you don’t have a replacement elastomer hose clamp, use a conventional hose clamp. c. …
HNBR – CHARACTERISTICS & GENERAL COMPOUNDING – …
www.ramcharan.orgThe material itself is a derivative of nitrile rubber, which is hydrogenated in solution using precious metal catalysts. The basic structure of an HNBR elastomer is provided in Figure 1. As outlined below, the process begins with the production of an emulsion-polymerized NBR. This polymer is then dissolved in an appropriate solvent. After
Materials Chemical Compatibility Guide - Trelleborg
www.trelleborg.comportfolio: a one-stop-shop providing the best in elastomer, thermoplastic, PTFE and composite technologies for applications in aerospace, industrial and automotive industries. With 50 years of experience, Trelleborg Sealing Solutions ... Polyester Urethane ® ...
Technical Handbook O-rings 5. Designing with Rubber
www.eriksusa.comThe softer the elastomer, the better the seal material conforms to the surfaces to be sealed and lower pressure is required to create a seal. This is particularly important in low pressure seals that are not activated by fluid pressure. The softer the elastomer, the higher the coefficient of friction. In dynamic applications
TECHNICAL SPECIFICATIONS : FIRE FIGHTING
www.cmch-vellore.eduelastomer rubber shall have a long life and shall not give away on continuous applied water pressure. The valve shall be fitted between two flanges on either side of pipe flanges. The ... The gap between the ball and the Teflon packing shall be sealed to prevent water seeping.
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