Elastomer of Liquid Injection Molding
SIFEL3000 series
SHIN-ETSU SIFEL® of Liquid Injection Molding type is designed for LIM System.
LIM System (LIMS) is a newly designed system, which includes a highly functional liquid fluoroelastomer and an injection-molding machine to precisely inject those fluids. From the set-up of raw materials to blending and molding, the entire process is automated to assure high quality products. One-component type can be used for compression molding as well.
Product Listing
Values listed are typical values and do not constitute a specification.
Two-component type
| Product Name | SIFEL3405A/B | SIFEL3505A/B | SIFEL3705A/B |
|---|---|---|---|
| Features | 40 Shore A | 50 Shore A | 70 Shore A |
| Before curing properties | |||
| Appearance | A:Black liquid B:Milky white liquid |
A:Black paste B:Milky white paste |
A:Black paste B:White paste |
| Viscosity 23ºC | A:70 Pa·s B:80 Pa·s |
A:300 Pa·s B:250 Pa·s |
A:1100 Pa·s B:1000 Pa·s |
| After curing properties | |||
| Cure Condition | Press cure 150ºC / 10 min and post cure 200ºC / 4hr | ||
| Density at 23ºC | 1.86g/cm3 | 1.86g/cm3 | 1.88g/cm3 |
| Hardness Duro A | 40 | 50 | 68 |
| Tensile Strength | 8.0 MPa | 12 MPa | 9.0 MPa |
| Elongation | 320 % | 350 % | 220 % |
| Tear Strength | 9.0kN/m | 14kN/m | 11kN/m |
| Compression Set 200ºC / 70hr (Button) |
24 % | 20 % | 20 % |
Two-componet type is designed for Liquid Injection Molding System.
One-component type
| Product Name | SIFEL3590-N | SIFEL3795 | X-71-369 | X-71-377 | |
|---|---|---|---|---|---|
| Features | 55 Shore A Liquid |
70 Shore A Highly thixotropic Type |
45 Shore A Highly thixotropic type |
85 Shore A Highly thixotropic type |
|
| Before curing properties | |||||
| Appearance | Milky white liquid | Black paste | Black paste | Gray paste | |
| Viscosity 23ºC | 50 Pa·s | 1,400 Pa·s (14,000 Poise) |
410 Pa·s | 3000 Pa·s | |
| After curing properties | |||||
| Cure Condition | Press cure 150ºC / 10 min and post cure 200ºC / 4hr | ||||
| Density at 23ºC | 1.88g/cm3 | 1.87g/cm3 | 1.88g/cm3 | 1.98g/cm3 | |
| Hardness Duro A | 55 | 70 | 45 | 85 | |
| Tensile Strength | 7.8MPa | 7.0MPa | 8.2MPa | 7.1MPa | |
| Elongation | 250 % | 170 % | 490 % | 74 % | |
| Tear Strength | 9kN/m | 9kN/m | 10kN/m | 8kN/m | |
One-component type can be used other molding method than LIMS.
Properties
Values listed are typical values and do not constitute a specification.
Cure Speed
Required Curing Condition
| Press Cure | Post Cure | |
|---|---|---|
| SIFEL(LIM) | 150ºC/<1min | 200ºC/4hr |
| Regular Fluoroelastomer | 170ºC/15min | 230ºC/24hr |
Low Temperature Flexibility
Temperature of Retraction (ASTM D1329)
| SIFEL3705 | Fluoroelastomer Regular Type |
Fluoroelastomer Low temp. Grade |
|
|---|---|---|---|
| TR-10 (ºC) | -50 | -17 | -30 |
Heat Resistance
Oil Resistance
Immersion test in automotive engine oil at 150ºC (TOYOTA SN 5W-20)
Immersion test in ATF oil (150ºC/DEXRON VI)
Solvent Resistance
Weight change in various solvents
| Solvent | Volume change ％ 23ºC/70hr | ||
|---|---|---|---|
| SIFEL3505 | SIFEL3705 | ||
| Hydrocarbon | |||
| Fuel C | 10 | 10 | |
| Hexane | 10 | 10 | |
| Toluene | 7 | 7 | |
| Light Oil | 1 | 1 | |
| Halogenated hydrocarbon |
Chloroform | 12 | 11 |
| Ketone | Acetone | 7 | 6 |
| MEK | 8 | 8 | |
| Ester | Ethyl Acetate | 9 | 9 |
| Alcohol | Methanol | 1 | 2 |
| Ethylene Glycol | 1 | 1 | |
| Ether | THF | 11 | 10 |
| ETBE | 15 | 14 | |
| Amine | Pyridine | 4 | 4 |
| Butylamine | 9 | 10 | |
| Amide | DMF | 2 | 2 |
Chemical Resistance
Electrical Insulation Properties
| SIFEL3705 | Fluoroelastomer | Fluorosilicone | |
|---|---|---|---|
| Volume Resistivity(ASTM D257) MΩ･m |
1X107 | 3X104 | 2X103 |
| Dielectric Strength(ASTM D149) kV/mm | 27 | 24 | 20 |
| Dielectric Constant (ASTM D150) 50 Hz | 3.2 | 11 | 6 |
| Dielectric Dissipation Factor (ASTM D150) 50Hz | 6X10-3 | 3X10-1 | 4X10-3 |
SIFEL can be used as a low-k material.
Low Moisture Permeability
| SIFEL3705 | Fluoroelastomer | Fluorosilicone | |
|---|---|---|---|
| Permeability(g/m2・24hr) | 5 | 4 | 50 |
Catalog Download
Liquid Fluoroelastomers SHIN-ETSU SIFEL Catalog Download
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