Datasheets - General Purpose Elastomers

Transcription

1 Datasheets - General Purpose Elastomers Natural Rubber (NR) Market introduction 1840 Price indication, volume index compound 1,0 Service temperature, min C -50 Service temperature, max C +80 Mechanical properties 4-5 Rebound resilience at RT 5 Compression set (-30 to +70 C) 4 Compression set (+70 to +150 C 1 Abrasion 4-5 Heat 1-2 Very good mechanical properties. High elasticity and good abrasion resistance. Good low temperature properties, except that it can crystallize. Poor weathering and ozone resistance, no oil resistance and limited heat resistance. Tyres, especially for heavy vehicles and winter tyres for cars. Abrasion protection (mining industry). Dampers, bushings and engine mounts. Polyisoprene Rubber (IR) Market introduction 1954 Price indication, volume index compound 1,2 Service temperature, min C -50 Service temperature, max C +80 Mechanical properties 4-5 Rebound resilience at RT 5 Compression set (-30 to +70 C) 4 Compression set (+70 to +150 C) 1 Abrasion 4-5 Heat 1-2 Very good mechanical properties. High elasticity and good abrasion resistance. Higher purity and less variable in its composition compared to NR. Poor weathering and ozone resistance, no oil resistance and limited heat resistance. Slightly more expensive than NR. Technical rubber goods, with narrow tolerances. 45

2 Datasheets - General Purpose Elastomers Styrene Butadiene Rubber (SBR) Abrasion 4-5 Heat 1-2 Market introduction Approx Price indication, volume index compound 0,9 Service temperature, min C -40 Service temperature, max C +90 Compression set (-30 to +70 C) 4 Compression set (+70 to +150 C) 1 Good mechanical properties. Compatible with NR. A low and relatively stable price. Requires reinforcing fillers. Poor weathering and ozone resistance and no oil resistance. Tyres, technical rubber products, pipe seals etc. Butadiene Rubber (BR) Market introduction 1955/56 Price indication, volume index compound 0,9 Service temperature, min C -75 Service temperature, max C +80 Rebound resilience at RT 5 Compression set (-30 to +70 C) 4 Compression set (+70 to +150 C) 1 Abrasion 5 Heat 1-2 Very high elasticity and abrasion resistance. Very good low temperature properties. Difficult to process as a single polymer. Poor weathering and ozone resistance and no oil resistance. Blended with NR and SBR in tyres. 46

3 Datasheets - Special Purpose Elastomers Ethylene Propylene Rubber (EPM, EPDM) Market introduction EPM 1955 EPDM 1963 Price indication, volume index compound 1,2 Service temperature, min C -35 Service temperature, max C +120 Compression set (+70 to +150 C) 2-3 Heat 3-4 Water 5 Weathering and ozone resistant, good mechanical resistance and very good water resistance. No oil resistance and poor adhesion in bonding to metal. Hoses, bellows, pipe seals, building profiles, roof sheeting etc. Isobutylene Isoprene Rubber (IIR) (CIIR, BIIR) Heat 3-4 Weather and ozone 4 Market introduction 1942 Price indication, volume index compound 1,3 (CIIR, BIIR 1,8) Service temperature, min C -45 Service temperature, max C 90 Rebound resilience at RT 1 Compression set (-30 to +70 C) 2 Compression set (+70 to +150 C) 2 Very low gas permeability. Good ozone and weathering resistance. Poor adhesion to general purpose elastomer types. Can be achieved with chlorinated and brominated IIR. No oil or fuel resistance. Inner tubes, roof sheeting, bladders for tyre curing. 47

4 Datasheets - Special Purpose Elastomers Chloroprene Rubber (CR) Market introduction 1932 Price indication, volume index compound 2,1 Service temperature, min C -35 Service temperature, max C +85 Compression set (+70 to +150 C) Heat 3 Weather and ozone 3 Water 2-3 Oil and gasoline 2-3 Good dynamic mechanical properties. Can be compounded for fireproof applications. A high price. Poor water resistance. Crystallizing. Transmission and conveyor belts. Cover to oil and gasoline hoses. Structural adhesive. Nitrile Rubber (NBR) Market introduction 1937 Price indication, volume index compound 1,4 Service temperature, min C -30 Service temperature, max C +90 Dynamic fatigue 2 Compression set (+70 to +150 C) 3 Heat 3 Water 3-4 Oil and gasoline 3-4 Resistant to oil, grease and partly fuel. Good mechanical properties. Poor weathering and ozone resistance. Increased oil resistance gives reduced low temperature properties. Shaft seals, O-rings, inner lining in hoses, gaskets and membranes. 48

5 Datasheets - Special Purpose Elastomers Carboxylated Nitrile Rubber (XNBR) Market introduction - Price indication, volume index compound 2,1 Service temperature, min C -25 Service temperature, max C +90 Mechanical properties 4 Dynamic fatigue 2 Compression set (+70 to +150 C) 3 Abrasion 4 Heat 3 Water 3-4 Oil and gasoline 3-4 Resistant to oil, lubricants and fuel. Excellent mechanical properties and abrasion resistant. Poor compression set and heat resistance. Pump linings, wear applications and gaskets. Hydrerat nitrilgummi (HNBR) Market introduction 1983 Price indication, volume index compound 11,7 Service temperature, min 0 C -25 Service temperature, max 0 C +125 Compression set (-30 to +70 C) 2-3 Compression set (+70 to +150 C) 4 Heat 4 Water 3-4 Oil and gasoline 3-4 Resistant to oil, lubricants and fuel. Good mechanical properties and good heat, weathering and ozone resistance. Poor low temperature elasticity and a high price. Timing belts, shaft seals, gaskets, O-rings and hoses. Seals in the oil off-shore industry. 49

6 Nitrile-PVC blend (NBR/PVC) + mechanically blended PVC Market introduction - Price indication, volume index compound 1,5 Service temperature, min C -25 Service temperature, max C +80 Dynamic fatigue 2-3 Rebound resilience at RT 2-3 Compression set (-30 to +70 C) 2 Compression set (+70 to +150 C) 2 Heat 3 Weather and ozone 3-4 Water 3 Oil and gasoline 4 Oil, lubricants and fuel resistance. Good mechanical properties and good ozone and weathering resistance. Poor low temperature resistance. High compression set and damping. Hoses for gas and fuel. Fire hoses and gaskets. Norbornene Rubber (PNR) Market introduction 1975 Price indication, volume index compound 1,3 Service temperature, min C -50 Service temperature, max C +60 Mechanical properties 2 Compression set (+70 to +150 C) 1 Heat 1-2 Very soft. Can be compounded for both high and low damping. Lacks oil or gasoline resistance. Poor ozone, weathering and heat resistance. Profiles and seals. 50

7 Chlorinated Polyethylene (CM Market introduction 1967 Price indication, volume index compound 1,8 Service temperature, min C -10 Service temperature, max C +125 Dynamic fatigue 2 Compression set (+70 to +150 C) 3-4 Heat 3-4 Weather and ozone 4 Water 2-3 Oil and gasoline 2 Relatively good heat resistance. Can be compounded to have fireproof properties. Dynamic properties. Coated fabrics and cable sheathing. Chlorosulfonated Polyethylene (CSM) Heat 3-4 Weather and ozone 4 Water 3 Oil and gasoline 2-3 Market introduction 1952 Price indication, volume index compound 3,3 Service temperature, min C -40 Service temperature, max C +125 Compression set (-30 to +70 C) 2 Compression set (+70 to +150 C) 2 Ozone and weathering resistance and resistance to oxidation by acidic substances. Relatively good heat resistance. Dynamic properties. Difficult to process. Roof sheeting, fabric coatings and tarpaulins. 51

8 Acrylic rubber (ACM) Market introduction 1948 Price indication, volume index compound 4,2 Service temperature, min C -20 Service temperature, max C +140 Mechanical properties 2-3 Dynamic fatigue 2-3 Rebound resilience at RT 4 Compression set (+70 to +150 C) 3 Abrasion 2-3 Heat 4 Weather and ozone 3 Water 2 Oil and gasoline 4 Heat and oil resistance. Good ozone and weathering resistance. Sensitive to hydrolysis. Low abrasion resistance. Shaft seals, O-rings and hoses. Ethylene Acrylic Rubber (AEM) Heat 4 Weather and ozone 4 Water 2 Oil and gasoline 3 Market introduction 1975 Price indication, volume index compound 3,8 Service temperature, min C -30 Service temperature, max C +150 Mechanical properties 2 Rebound resilience at RT 1 Compression set (-30 to +70 C) 4 Compression set (+70 to +150 C) 4 Oil, lubricant, fuel and chemical resistance. Heat, weathering and ozone resistance. Low compression set. Low resistance to abrasion and can be sensitive to hydrolysis. Static gaskets, hoses for oil cooler and hydraulic applications. 52

9 Ethylene-vinyl acetate (EVM) Market introduction 1950 Price indication, volume index compound 2,5 Service temperature, min C -30 Service temperature, max C +150 Dynamic fatigue 2 Rebound resilience at RT - Compression set (-30 to +70 C) 2 Compression set (+70 to +150 C) 2 Abrasion 2 Heat 3 Water 3 Oil and gasoline 2 Very good weathering resistance and good resistance to dry hot air. Relatively poor fuel and solvent resistance. Wire and cable sheathing when resistance to ozone, weather, dryness and oil is important. Fluorocarbon Rubber (FPM) Market introduction 1955 Price indication, volume index compound 33 Service temperature, min C -15 Service temperature, max C +200 Mechanical properties 1-2 Dynamic fatigue 1-2 Rebound resilience at RT 2 Compression set (-30 to +70 C) 2-3 Compression set (+70 to +150 C) 5 Heat 5 Water 3 Oil and gasoline 5 Oil, lubricant, fuel and chemical resistance. Heat, weathering and ozone resistance. Low permeability and compression set. Poor low temperature properties and low hot tear strength. A high density and price. Shaft seals, O-rings, gaskets, valves, pumps, hoses, and membranes for extreme conditions. 53

10 Perfluorocarbon Rubber (FFKM) Heat 5 Water 3 Oil and gasoline 5 Market introduction 1975 Price indication, volume index compound1650 Service temperature, min C -15 Service temperature, max C +250 Mechanical properties 2 Dynamic fatigue 1-2 Rebound resilience at RT 2 Compression set (-30 to +70 C) 2-3 Compression set (+70 to +150 C) 3-4 Extremely resistant to oil, acids and heat. Resistant to superheated steam, aromatic and aliphatic hydrocarbons, fuels, hydraulic fluids and various solvents. An extremely high price. Difficult to process. High coefficient of thermal expansion, limitations concerning dimensions and complexity in details of articles. Gaskets in chemical process equipment. Gaskets and membranes in different types of instruments for chemical analysis. in the off shore industry. Tetrafluoroethylenepropylene Rubber (FEPM) Heat 4-5 Oil and gasoline 4 Market introduction - Price indication, volume index compound 45 Service temperature, min C -5 Service temperature, max C +200 Mechanical properties 4 Rebound resilience at RT 1 Compression set (-30 to +70 C) 2 Compression set (+70 to +150 C) 3-4 Very good compression set at high temperatures. A very high price. The off shore industry, the chemical processing industry. Roll covering, hoses, wire insulation and cable sheathing. 54

11 Silicone Rubber (PMQ, VMQ) Market introduction 1944 Price indication, volume index compound 5,8 Service temperature, min C -80 Service temperature, max C) +200 Mechanical properties 1 Dynamic fatigue 1-2 Rebound resilience at RT 5 Compression set (-30 to +70 C) 4 Compression set (+70 to +150 C) 4 Abrasion 1-2 Heat 4-5 Water 2 Oil and gasoline 2-3 Excellent high and low temperature, weathering and ozone resistance. to pure mineral oils and many types of grease lubricants. Poor tensile and tear strength. Poor abrasion and water resistance. A high permeability and expensive. Poor resistance to aromatic oils. Medical applications, dampers, gaskets in ships, air and space industry. Cable insulation, roll coverings, suction cups. Fluorosilicone Rubber (FMQ) Market introduction 1958 Price indication, volume index compound 90 Service temperature, min C -55 Service temperature, max C +175 Mechanical properties 1 Dynamic fatigue 2 Rebound resilience at RT 4 Compression set (+70 to +150 C) 4 Abrasion 1 Heat 4-5 Water 2 Oil and gasoline 4 Very good oil and fuel resistance. Resistant to aromatic and chlorinated hydrocarbons. Excellent ozone and weathering resistance. Excellent low temperature properties. Very good heat resistance. Poor resistance to hydrolysis. Low tensile and tear strength. Poor abrasion resistance. A high price. O-rings, gaskets and flexible couplings, in fuel systems and pumps for jet motors. Electrical applications. 55

12 Urethane Rubber (AU/EU) Market introduction 1950 Price indication, volume index compound 4,2 Service temperature, min C -10 Service temperature, max C +70 Mechanical properties 4-5 Rebound resilience at RT 1 Compression set (+70 to +150 C) 1-2 Abrasion 5 Heat 2 Water 2 Oil and gasoline 4-5 The highest tensile and tear strength of all elastomeric materials. Good ozone and weathering resistance. Good oil and fuel resistance. Ether types (EU) have better hydrolysis resistance than ester types (AU), which have better mechanical properties. Poor cold flexibility, hydrolysis and heat resistance. Relatively high price. General products with abrasion resistance, gaskets for high pressure, foot wear soles, solid tyres and roll coverings. Epichlorohydrine Rubber (CO/ECO/GECO) Heat 3 Weather and ozone 4 Oil and gasoline 4 Market introduction 1965 Price indication, volume index compound 5,0 Service temperature, min C -40 Service temperature, max C +120 Mechanical properties Compression set (-30 to +70 C 2-3 Compression set (+70 to +150 C) 2-3 Resistant to fuel containing alcohol. Low gas permeability. Limited resistance to "sour" gasoline. Sealings and hoses for fuel systems. 56

13 Polysulphide Rubber (T/OT/EOT) Abrasion 1 Heat 2-3 Weather and ozone 4 Water 3 Oil and gasoline 4-5 Market introduction 1930 Price indication, volume index compound 3,0 Service temperature, min C -40 Service temperature, max C +80 Mechanical properties 1 Dynamic fatigue 1 Rebound resilience at RT 2 Compression set (-30 to +70 C) 1-2 Compression set (+70 to +150 C) 1-2 High gasoline and oil resistance. Low gas permeability. Good weathering resistance. Bad mechanical properties and heat resistance. Bad odour. Difficult to process. Sealing compounds for fuel tanks for aircrafts and insulated windows in the building industry. 57