SILICONE RUBBER INTRODUCTION
Silicone rubber is a polymer that has a "backbone" of silicon-oxygen linkages, the same bond that is found in quartz, glass and sand. Normally, heat is required to vulcanise (set) the silicone rubber; this is normally carried out in a two stage process at the point of manufacture into the desired shape, and then in a prolonged post-cure process. It can also be injection molded.
Properties
Silicone rubber offers good resistance to extreme temperatures, being able to operate normally from -55°C to +300°C. At the extreme temperatures, the tensile strength, elongation, tear strength and compression set can be far superior to conventional rubbers although still low relative to other materials. Organic rubber has a carbon to carbon backbone which can leave them susceptible to ozone, UV, heat and other ageing factors that silicone rubber can withstand well. This makes it one of the elastomers of choice in many extreme environments.
Compared to other organic rubbers, however, silicone rubber has a very low tensile strength. For this reason, care is needed in designing products to withstand even low imposed loads. Silicone rubber is a highly inert material and does not react with most chemicals. Due to its inertness, it is used in many medical applications and in medical implants. However, typical medical products like breast implants and catheters have failed because of poor design.
Applications
Once milled and coloured, silicone rubber can be extruded into tubes, strips, solid cord or custom profiles according the size restrictions of the manufacturer. Cord can be joined to make "O" Rings and extruded profiles can be joined to make seals. Silicone rubber can be moulded into custom shapes and designs.
Becoming more and more common at the consumer level, silicone rubber products can be found in every room of a typical home. From automotive applications; to a large variety of cooking, baking, and food storage products; to apparel, undergarments, sportswear, and footwear; to electronics; to home repair and hardware, and a host of unseen applications.
Non-dyed silicone rubber tape with an iron-oxide additive (making the tape a red-orange colour) is used extensively in aviation and aerospace wiring applications as a splice or wrapping tape due to its non-flammable nature. The iron-oxide additive adds high thermal conductivity but does not change the high electrical insulation property of the silicone rubber. This type of tape self-fuses or amalgamates without any added adhesive.
Precipitated Silica
Heat Cured Rubber |
Feature |
SiSiB® Elastomer |
Application |
High Grade Molding |
SiSiB® HR0230
SiSiB® HR0240
SiSiB® HR0250
SiSiB® HR0260
SiSiB® HR0270
SiSiB® HR0280
SiSiB® HR0290 |
Keypad, Kitchenware, Sealant Part, Roller, Car Fittings, Others |
Economical Molding |
SiSiB® HR0130
SiSiB® HR0140
SiSiB® HR0150
SiSiB® HR0160
SiSiB® HR0170
SiSiB® HR0180 |
Keypad, Kitchenware, Sealant Part, Roller, Car Fittings, Others |
Extrusion |
SiSiB® HR0650
SiSiB® HR0660
SiSiB® HR0670
SiSiB® HR0760
SiSiB® HR0770
SiSiB® HR0870 |
Electrical Wire, Cable, Tube |
High Bound Resilience |
SiSiB® HR0550
SiSiB® HR0560
SiSiB® HR0570 |
Keypad, Kitchenware, Sealant Part, Roller, Car Fittings, Others |
Fumed Silica
Heat Cured Rubber |
High Strength |
SiSiB® HR2030
SiSiB® HR2040
SiSiB® HR2050
SiSiB® HR2060
SiSiB® HR2070
SiSiB® HR2075
SiSiB® HR2080 |
Keypad, Kitchenware, Sealant Part, Roller, Car Fittings,
Swimming Accessory, Others |
High Transparency & High Strength |
SiSiB® HR2130
SiSiB® HR2140
SiSiB® HR2150
SiSiB® HR2160
SiSiB® HR2170
SiSiB® HR2180 |
Keypad, Kitchenware, Baby Nipple, Sealant Part, Roller, Car
Fittings, Swimming Accessory, Others |
High Tear Strength |
SiSiB® HR2230
SiSiB® HR2240
SiSiB® HR2250
SiSiB® HR2260
SiSiB® HR2270 |
Keypad, Kitchenware, Car Fittings, Others |
Extrusion |
SiSiB® HR2360
SiSiB® HR2370 |
Electrical Wire, Cable, Tube, Kitchenware |
High Bound Resilience |
SiSiB® HR2540
SiSiB® HR2550
SiSiB® HR2560
SiSiB® HR2570 |
Long-life Keypad, Kitchenware, Sealant Part, Roller, Others |
Special Application
Heat Cured Rubber |
Flame-Retardant |
SiSiB® HR6030
SiSiB® HR6040
SiSiB® HR6050
SiSiB® HR6060
SiSiB® HR6070
SiSiB® HR6080
SiSiB® HR6080
SiSiB® HR6090 |
Keypad, Electrical Wire, Cable, Tube, Others |
Oil-Resistant |
SiSiB® HR6130
SiSiB® HR6150
SiSiB® HR6170 |
Sealant Part, Roller, Others |
Heat Resistant |
SiSiB® HR6251
SiSiB® HR6261
SiSiB® HR6271
SiSiB® HR6252
SiSiB® HR6262
SiSiB® HR6272
SiSiB® HR6253
SiSiB® HR6263
SiSiB® HR6273 |
Sealant Part, Roller, Others |
Self-Lubricated |
SiSiB® HR6320
SiSiB® HR6330
SiSiB® HR6340
SiSiB® HR6350
SiSiB® HR6360 |
Sealant Part, Roller, Others |
High Strength Self-Lubricated |
SiSiB® HR6321
SiSiB® HR6331
SiSiB® HR6341
SiSiB® HR6351
SiSiB® HR6361 |
Sealant Part, Roller, Others |
High Voltage Insulator |
SiSiB® HR6550
SiSiB® HR6560
SiSiB® HR6570 |
Insulator |
Low Hardness |
SiSiB® HR6808
SiSiB® HR6820
SiSiB® HR6825 |
Car Fittings, Swimming Accessory, Others |
Liquid Silicone Rubber |
General Purpose |
SiSiB® LR8020
SiSiB® LR8030
SiSiB® LR8040
SiSiB® LR8050
SiSiB® LR8060
SiSiB® LR8070 |
Keypad, Seals, Others |
High Transparency & High Strength |
SiSiB® LR8110
SiSiB® LR8120
SiSiB® LR8130
SiSiB® LR8140
SiSiB® LR8150
SiSiB® LR8160
SiSiB® LR8170
SiSiB® LR8180 |
Keypad, Seal, Kitchenware, Baby Nipple, Feeding Bottle,
Swimming Accessory, Parts |
High Strength |
SiSiB® LR8210
SiSiB® LR8220
SiSiB® LR8230
SiSiB® LR8240
SiSiB® LR8250
SiSiB® LR8260
SiSiB® LR8270
SiSiB® LR8280 |
Keypad, Seals, Kitchenware, Others |
Base Compound for Silicone Ink |
SiSiB® LR8650 |
Ink, Feel Agent |
Base Compound for Silicone Vanish |
SiSiB® LR8940 |
Vanish for Glass Fiber Wire |
|