Distinguish2 the metalloid chemical element Silicon Image Caulking.jpg thumb right Silicone caulk can ... , hydrogen , oxygen , and sometimes other chemical element s. Some common forms include silicone oil , silicone grease , silicone rubber , and silicone resin . Properties Some of the most useful ... . Because silicone can be formulated to be electrically insulative or conductive, it is suitable ... gas permeability At room temperature 25 C , the permeability of silicone rubber for such gases ... silicone useful for medical applications in which increased aeration is desired. However, silicone rubbers ... s and coined the term silicone. ref cite book url http books.google.com ?id 0VJD6MzH9D8C&pg PT27 page ... isbn 0849391628 ref Chemistry Image PDMS.png thumb right Chemical structure of the silicone polydimethylsiloxane ... common siloxane is linear polydimethylsiloxane PDMS , a silicone oil . The second largest group of silicone materials is based on silicone resin s, which are formed by branched and cage like oligosiloxanes. Terminology Silicone is not to be confused with the chemical element silicon , a crystalline ... Kipping F. S. Kipping coined the word silicone in 1901 to describe polydiphenylsiloxane by analogy ... and alkyloxysilicon chlorides ref A true silicone group with a double bond between oxygen and silicon ... , and related compounds. In producing the silicone polydimethylsiloxane PDMS , the starting material ... curing process. This chemistry is used in many consumer applications, such as silicone caulk and adhesive ... to produce hard silicone resin s. Similarly, precursors with three methyl groups can be used to limit ... chain. Modern silicone resins are generally made using tetraethoxysilane , which reacts in a more mild and controllable manner than chlorosilanes. Combustion When silicone is burned in air or oxygen ... now commonly use 100 silicone sealant to join glass plates. Glass joints made with silicone sealant ... iron and putty. This same silicone is used to make hinges in aquarium lids or for minor repairs. However ... more details
Infobox musical artist See Wikipedia WikiProject Musicians name Silicone Soul image caption image size background group or band alias Astrocats origin Glasgow , Scotland genre House music years active 1998 present label Soma Quality Recordings br Darkroom Dubs current members Craig Morrison, Graeme Reedie Silicone Soul are a house music production duo from Glasgow , Scotland . ref Allmusic class artist id p363923 biography pure url yes ref They have released three albums on Soma Quality Recordings , and manage their own record label called Darkroom Dubs . ref name dailyrecord http www.dailyrecord.co.uk news tm headline the dj q a &method full&objectid 18149702&siteid 66633 name page.html ref Their single release Right On featuring Louise Claire Marshall entered various charts throughout Europe and reached 1 in the UK Dance Chart UK Dance Singles Chart in October 2001. ref http www.thedjlist.com djs SILICONE SOUL ref Discography Albums A Soul Thing 2000 Staring into Space 2005 Save Our Souls 2006 Silicone Soul 2009 References reflist External links http www.discogs.com artist Silicone Soul Discography at discogs Category Scottish house music groups house band stub de Silicone Soul fr Silicone Soul it Silicone Soul ... more details
Multiple issues wikify October 2010 orphan October 2010 unreferenced October 2010 RTV Silicone room temperature vulcanization silicone is a type of silicone rubber made from a two component system base .... Applications include making Molding process molds for reproducing. RTV silicone rubber applications RTV Silicone Rubber will reproduce the finest detail and is suitable for a variety of industrial ... Silicone Rubber can also be used to cast a variety of materials including wax, gypsum, low melt ... silicone rubber Good characteristics of easy operation Light viscosity and good flowability Low shrinkage ... resistance and ageing resistance Operation instructions for making a mold by RTV silicone rubber Correct mixing ratio Component A is silicone rubber, and component B is curing agent or vulcanizing agent. Usually the mixing ratio will be 2 3 , e.g. to 100g silicone rubber should be added 2g catalyst and then mix them thoroughly. Note the weight of the silicone and catalyst should be weighed correctly ... RTV silicone reproduces the surface texture of the original model exactly, the surface of the original ..., for a matte finish, polishing is not necessary. Vacuum pumping process To mix the silicone ... out during the mixing of the silicone and hardener, if without Vacuum Pumping, the bubbles cannot be released from the mixture, as a result, there will be many bubbles in the finished silicone mold ... silicone mold will affect the quality of the production directly. Attention for making a mold by RTV silicone rubber RTV Silicone Rubber is white flowing liquid with general hardness of 22 40A after ... of silicone rubber with high hardness. On the contrary, if the products with fine and precision .... it doesn t better to add silicone oil into silicone rubber. If a special soft silicon mold or fine detailed and complex patterns products are required, 5 10 silicone oil can be added to soften the mold for easy demould. Advantages and Disadvantages of RTV Silicone Rubber Advantages RTV Silicone Rubber ... more details
Image Silicone resin.png right Silicone resins are a type of silicone material which is formed by branched, cage like oligosiloxanes with the general formula of R sub n sub SiX sub m sub O sub y sub , where R is a non reactive substituent, usually Methyl Me or Phenyl Ph , and X is a functional group Hydrogen H , Hydroxyl group OH , Chlorine Cl or Alkoxy group OR . These groups are further condensed in many applications, to give highly crosslinked, insoluble polysiloxane networks. ref name Clarson S.J. Clarson, J.A. Semlyen, Siloxane Polymers , Prentice Hall, New Jersey 1993 . ref When R is methyl, the four possible functional siloxane monomeric units are described as follows ref http www.dowcorning.com content sitech sitechnome more nomenclature discussion.asp Dow Corning nomenclature of silicon resins ref M stands for Me sub 3 sub SiO, D for Me sub 2 sub SiO sub 2 sub , T for MeSiO sub 3 sub and Q for SiO sub 4 sub . Note that a network of only Q groups becomes fused quartz . The most abundant silicone resins are built of D and T units DT resins or from M and Q units MQ resins , however many other combinations MDT, MTQ, QDT are also used in industry. Silicone resins represent a broad range of products. Materials of molecular weight in the range of 1000 10 000 are very useful in pressure sensitive adhesives, silicone rubbers, coatings and additives. ref http www.dowcorning.com applications search default.aspx?Ntx mode 20matchany&Ntk ProductFinder en&Nty 1&DCCD PRODUCT&Ne 4294963993&Ntt Silicone resins&N 4294963942&DCCT SEARCH List of silicone resins produced by Dow Corning ref ref http www.gesilicones.com gesilicones eu1 en category prod category landing.jsp?categoryId 2000011 Database of silicon resins produced by Momentive Performance Materials formerly GE Silicones ref Silicone resins are prepared by hydrolysis hydrolytic condensation reaction condensation of various silicone wiktionary Precursor precursor s. In early processes of preparation of silicone resins sodium ... more details
Silicone rubber is an elastomer rubber like material composed of silicone &mdash itself a polymer &mdash containing silicon together with carbon , hydrogen , and oxygen . Silicone rubbers are widely used in industry, and there are multiple formulations. Silicone rubbers are often one or two part polymers, and may contain fillers to improve properties or reduce cost. Silicone rubber is generally non ... and shaping, silicone rubber can be found in a wide variety of products, including automotive applications ... electronics medical devices and implants and in home repair and hardware with products such as silicone ... the silicone into its rubber like form. This is normally carried out in a two stage process at the point ... be injection molding injection molded . History The first silicone elastomer s were developed in the search ... materials for use as resinous binders when they synthesized the first silicone polymers, demonstrated ... properties of the new silicone products were studied in more detail, their potential for broader ... of silicone in 1953. The companies mentioned above are now still the main competitors in the oligopoly that comprises the silicone industry. Properties Silicone rubber offers good resistance to extreme ... that silicone rubber can withstand well. This makes it one of the elastomer s of choice in many extreme environments. Compared to organic rubbers, however, silicone rubber has a very low tensile strength . ref http www.makeitfrom.com compare ?left Natural Rubber&right Silicone Rubber Compare Materials Natural Rubber and Silicone Rubber ref For this reason, care is needed in designing products .... 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 implant s. Structure Image Silicone 3D vdW.png thumb right 200px silicone rubber chain Polysiloxane s differ from other polymers in that their backbones ... and a bond angle of 130 . Image pdms.png thumb right 200px repeat unit of silicone rubber The siloxane ... more details
Silicone granulomas are a skin condition that occur as a reaction to liquid silicone s, and are characterized by the formation of nodules. ref name Andrews cite book author James, William D. Berger, Timothy G. et al. title Andrews Diseases of the Skin clinical Dermatology publisher Saunders Elsevier location year 2006 pages isbn 0 7216 2921 0 oclc doi accessdate ref rp 46 See also Granuloma Skin lesion References reflist Cutaneous condition stub Category Skin conditions resulting from physical factors ... more details
Image Foamfixer.jpg thumb right Foam fixer pump used to draw silicone foam individual components, then mix them at the nozzle and dispense into desired location. Image Silicone foam sakno1.jpg thumb right Silicone foam having been dispensed into hole in a wall, above a door. Silicone foam is a synthetic rubber product used in gasket ing, sheets and firestop s. It is available in solid, cured form as well as in individual liquid components for field installations. Uses Gasket s Sheets High temperature tubes for autoclave s Firestop s Surfactant s Vulcanisation When the constituent components of silicone foam are mixed together, they evolve hydrogen gas, which causes bubbles to form within the rubber, as it changes from liquid to solid. This results in an outward pressure, causing friction between the foam and whatever it is poured into. Temperature and humidity can influence the rate of expansion. If the gas escapes over time, that friction is reduced. See also Firestop Gerald W. Brown Vulcanization Vulcanisation Rubber External links Commons category Silicone foam http www.nrc.gov reading rm doc collections event status event 2010 20100921en.html en46261 United States Nuclear Regulatory Commission Event Number 46261 1 gap appeared in the RTV silicone foam firestop in an Appendix R wall between Fire Area FA 29 and FA 30 at PRAIRIE ISLAND, MN, NRC Region 3 , Notification Date 09 20 ... 09 20 2010 http www.mtiglobalinc.com companies na silicones groendyk magnicell.html Silicone foam used ... Elastomerics silicone foam used in gasketing http www.silicone sponge supply.com Silicone sponge sheets ... in Diablo Canyon starting inside silicone foam http www.nrc.gov reading rm doc collections gen comm ... POTENTIAL PROBLEMS WITH SILICONE FOAM FIRE BARRIER PENETRATION SEALS http www.nrc.gov reading rm doc ... www.dowcorning.com content discover discoverchem si stabilizers.aspx?bhcp 1 Silicone foam surfactant, the Marangioni effect on cell stabilisation DEFAULTSORT Silicone Foam Category Foams Category Rubber ... more details
A silicone oil is any polymerized siloxane s with organic side chains. They are formed of alternating silicon oxygen atoms ...Si O Si O Si... or siloxane , rather than carbon atoms ...C C C C... . Other species attach to the tetravalent silicon atoms, not to the divalent oxygen atoms which are fully committed to forming the siloxane chain. A typical example is polydimethylsiloxane , where two methyl groups attach to each silicon atom to form H sub 3 sub C Si CH sub 3 sub sub 2 sub O sub n sub Si CH sub 3 sub sub 3 sub . The carbon analogue would be an alkane , e.g. Neopentane dimethylpropane C sub 5 sub H sub 12 sub or H sub 3 sub C C CH sub 3 sub sub 2 sub CH sub 3 sub . Applications Silicone oils are primarily used as lubricants or hydraulics hydraulic fluids . They are excellent electrical insulators ref cite journal author Miyahara H, Nakajima A, Wada J, Yanabu S title 2006 IEEE 8th International Conference on Properties and applications of Dielectric Materials journal Properties and applications of Dielectric Materials, 2006. 8th International Conference date June 2006 pages 661 664 doi 10.1109 ICPADM.2006.284264 chapter Breakdown Characteristics of Combined Insulation in Silicone ... drying freeze dryers as refrigerant s. Silicone oil is also commonly used as the working fluid in diffusion pump s. Some silicone oils, such as simethicone , are potent anti foaming agent s due ... added to cooking oils to prevent excessive frothing during deep frying . Silicone oils used as lubricants ... of polyurethane foam. Silicone oil is also one of the two main ingredients in Silly ... contain silicone oil. Silicone oils have been used as a vitreous fluid substitute to treat difficult ... of medical grade silicone oils journal J Anal Appl Pyrolysis year 1997 pages 151 158 volume 42 doi 10.1016 S0165 2370 97 00002 8 issue 2 ref Automotive use Silicone oil is commonly used as the fluid ... ref References Reflist DEFAULTSORT Silicone Oil Category Silicones ar cs Silikonov ... more details
Silicone grease is a waterproof grease lubricant grease made by combining a silicone oil with a thickener. Most commonly, the silicone oil is polydimethylsiloxane and the thickener is amorphous fumed silica . Using this formulation, silicone grease is a translucent white viscous paste, with exact properties dependent on the type and proportion of the components. Use in industry Silicone grease is commonly used for lubricating and preserving rubber parts, such as O ring s. Additionally, silicone grease does not swell or soften the rubber, which can be a problem with hydrocarbon based greases. It functions well as a corrosion inhibitor and lubricant for purposes that require a thicker lubricant, such as the operating mechanism of the M1 Garand rifle. Thermal grease often consists of a silicone grease base, along with added thermally conductive fillers. It is used for heat transfer abilities, rather than friction reduction. Special versions of silicone grease are also used widely by the plumbing industry in faucets and seals, as well as dental equipment. These special versions are formulated using components not known to be an ingestion hazard. Electrical utilities use silicone grease to lubricate separable elbows on lines which must endure high temperatures. Silicone greases generally have a temperature range of 40 to 400 C. Use in the chemical laboratory Silicone grease is widely used as a temporary sealant and a lubricant for interconnecting ground glass joint s, as is typically used in laboratory glassware . Although silicones are normally assumed to be chemically inert, several ... produced by reactions resulting from contacting organolithium and organopotassium compounds with silicone ... pmid 17546579 ref Consumer uses Silicone based lubricants are often used by consumers in applications .... Silicone based lubricants are also commonly used for remote control hobbies. Various household ... through the connector. References references Category Silicones Category Greases it Grasso al silicone ... more details
Medical grade silicones are silicone s tested for biocompatibility and are appropriate to be used for medical applications. In the United States, the Food and Drug Administration FDA regulates materials Implant medicine implant ed into the body. ref http www.fda.gov MedicalDevices DeviceRegulationandGuidance Overview ClassifyYourDevice default.htm FDA Device Regulation and Guidance ref Medical grade silicones are generally grouped into three categories non implantable, short term implantable, and long term implantable. Materials approved as USP ref http www.usp.org referenceStandards USP Reference Standards ref Class V and VI can be considered medical grade. Most medical grade silicones are at least Class VI certified. Silicone suppliers and some silicone prototyping companies provide guidelines for material use ref http www.albright1.com manual Silicone Molding Design Manual ref . Uses Tubing Drains Feeding tubes Catheters Implants for long and short term use Seals and gaskets Scar Treatment Silicone Sheets FDA Class 1 Medical Device and gels. Condoms Menstrual cups http www.mooncup.co.uk Sex toys Limitations Silicone rubber applications such as catheter s are widespread in medicine, but have several limitations. For example, they exhibit poor tear strength and poor resistance to fatigue . Brittle fracture can occur from defects within sections owing to poor control of vulcanization . It resulted in high failure rates for breast implant s, and much subsequent litigation in the USA, as well as elsewhere in the world. It led to a crisis of confidence in the US, with many manufacturers being forced out of the business entirely, and others to manufacture under FDA control. See also Silicone United States Pharmacopeia U.S. Food and Drug Administration Silicone rubber Polymers Plastics engineering References references Category Silicones Category Medical technology Category Elastomers Category Biomaterials Category Silicone rubber medical equipment stub ... more details
Summary Self leveling silicone firestop system used around Corflex cables in 2 hour fire resistance rated concrete floor assembly. Licensing PD self date October 2006 Copy to Wikimedia Commons bot Fbot Orphan image ... more details
Summary Self leveling silicone firestop system used around copper pipe material pipe through penetrations in a two hour fire resistance rated concrete floor assembly. Licensing PD self date October 2006 Copy to Wikimedia Commons bot Fbot priority true ... more details
orphan date December 2007 Silicone quaternary amine is a chemical antimicrobial agent used in some odor repellent sock s, including Burlington Bioguard Socks. External links http www.straightdope.com classics a1 244.html Straight Dope How do odor eating socks work? Category Antimicrobials Category Polymers ... more details
Silicone scar sheets are a type of treatment used to prevent the formation of new scar s and to reduce the appearance of existing scars. The scar sheet is lined on one side with silicone gel. The other side is often lined with a smooth fabric or a transparent film. The treatment of scars has been of great interest to Plastic surgery plastic surgeons , hospital s, and burn centers for many years. A meta study published in the Cochrane Library concluded that it is unclear whether silicon gel sheeting helps prevent scarring. ref name Cochrane Silicon gel sheeting for preventing and treating hypertrophic and keloid scars http onlinelibrary.wiley.com doi 10.1002 14651858.CD003826.pub2 abstract jsessionid C37BBAD60DD13750B94673D471D8F0EB.d02t02 ref It found that many of the studies advocating their use were of poor quality and susceptible to bias. The effectiveness and safety of silicone sheet technology for the treatment and prevention of scars is supported by a number of Clinical study clinical studies . ref name test http www.mitchell vance.com clinical.php ref There have been more controlled clinical trial s performed on the treatment of scars using silicone gel sheets than most other methods. ref name test1 Mustoe TA, Cooter RD, Gold MH, et al. International Clinical Recommendations on scar management. Plast Reconstr Surg 2002 110 560 571 ref In clinical studies, the scars treated with silicone sheeting were improved significantly at 4, 8, and 12 weeks, compared with both their own treatment value and the control of scars. ref name test2 Ahn ST, Monafo W, Mustoe TA Surgery 1989 Oct, 106 4 781 786 ref References Reflist DEFAULTSORT Silicone Scar Sheet Category Dermatologic drugs ... more details
wikify date October 2011 Unreferenced date September 2010 Silicone rubber keypads also known as Elastomeric Keypads are used extensively in both consumer and industrial electronic products as a low cost and reliable switching solution. Technology Image Silicone keypad key design.jpg frame right Silicone Key web design The technology uses the compression molding properties of silicone rubber to create angled webbing around a switch center. On depression of the switch the webbing uniformly deforms to produce a tactile response. When pressure is removed from the switch the webbing returns to its neutral position with positive feedback. In order to make an electronic switch a carbon or gold pill is placed on the base of the switch center which contacts onto a PCB when the web has been deformed. It is possible to vary the tactile response and travel of a key by changing the webbing design and or the shore hardness of the silicone base material. Unusual key shapes can easily be accommodated as can key travel up to 3mm. Tactile forces can be as high as 500g depending on key size and shape. The snap ratio of a keypad determines the tactile feel experienced by the user. The recommended snap ratio for designers to maintain is 40 60 if dropped below 40 the keys will lose tactile feel but have an increased life. Loss of tactile feel means the user will not receive a click feedback during actuation ... F1 . By adding pigments to the natural silicone rubber it is possible to create keys in various colors ... and other climate changes. Applications Image Silicone rubber keypad example 1.jpg frame right Keypad with translucent rubber Common applications of Silicone rubber keypads include remote control s for TV .... With the increased use of low current switching within automobiles, silicone rubber keypads are being ... RegisteredPDFs designguiderubber.pdf Silicone Rubber Keypad Design guide Diamond Electronics http ... silicone keypad 8.htm Silicone Rubber Design Guide RSP, Inc. DEFAULTSORT Silicone Rubber Keypad Category ... more details
Summary Drawing of Silicone keypad key structure Licensing PD self date September 2007 Copy to Wikimedia Commons bot Fbot priority true ... more details
Summary Information Description LG VX10000 Silicone Case Source I created this work entirely by myself. Date Author User Geobio Geobio User talk Geobio talk other versions Licensing PD self date October 2008 Orphan image Copy to Wikimedia Commons bot Fbot ... more details
Refimprove date March 2010 Injection molding of liquid silicone rubber LSR is a process to produce pliable, durable parts in high volume. Liquid silicone rubber is a high purity platinum cured silicone ... nature of the material, liquid silicone injection molding requires special treatment, such as intensive ... cavity and vulcanized. Chemically, silicone rubber is a family of Thermoplastic elastomer ... side groups. Silicone rubbers constitute about 30 of the silicone family, making them the largest group of that family. Silicone rubbers maintain their mechanical properties over a wide range of temperatures and the presence of methyl groups in silicone rubbers makes these materials extremely hydrophobic. Typical applications for liquid silicone rubber are products that require high precision ... pans, spatulas, etc. Often, silicone rubber is overmolded onto other parts made of different plastics. For example, a silicone button face might be overmolded onto an Nylon Nylon 6,6 housing ... Molding ref Injectors. An injecting device is responsible for pressurizing the liquid silicone to aid ... liquid materials, the catalyst and the base forming silicone, ensuring that the two materials maintain ... upon completion. Injection molding process Liquid silicone rubber s are supplied in barrels or hobbock ... to solid silicone rubber materials that are purchased pre mixed and partially vulcanized. In contrast, hard silicone rubbers are processed by transfer molding and result in less material consistency and control, leading to higher part variability. Additionally, solid silicone rubber materials .... Liquid silicone rubbers are supplied in a variety of containers, from tubes to 55 gallon drums. Because ... vary based on the brand of silicone used. The two A and B compounds must be mixed in a 1 to 1 ... enters the static mixer section. Hard silicone rubbers are processed by transfer molding and result ... silicone rubber materials are processed at higher temperatures and require longer vulcanization ... more details
Summary Head of Wall Firestop Joint Presence of penetrant s demonstrate the need to have both operational and fire tested compatibility between the joint sealant and mechanical electrical through penetrations. In other words, it is easier to insist on the use of joint firestops that can also be used for penetration seals, as otherwise penetrants may be run by mechanical and electrical subtrades that unintentionally void the fire resistance rating of the wall, which jeopardises the entire fire safety plan in place for a building. Category Passive fire protection Licensing PD self date October 2006 Copy to Wikimedia Commons bot Fbot Orphan image ... more details
Summary Socks silicone Socks with a layer of silicone for protection of ones foot. Licensing PD self date November 2007 Orphan image Copy to Wikimedia Commons bot Fbot ... more details
Orphan date February 2009 Mepitel is a type of wound dressing product. It is classified as soft silicone primary dressing medical wound dressing . It is produced by M lnlycke Health Care . References Vloemans, A. F., Kreis, R. W. Fixation of skin graft s with a new silicone rubber dressing Mepitel . Scand J Plast Reconstr Surg Hand Surg 1994 28 1 75 76. Category First aid ... more details
Silnylon , a portmanteau of silicone and nylon , is a synthetic fabric used mainly in lightweight outdoor gear. It is made by impregnating a thin woven nylon fabric with liquid silicone from both sides. ref cite web url http www.specialtyoutdoors.com tips silnylon.asp title Tips for Sewing Silnylon accessdate 2007 06 11 work Specialty Outdoors ref This makes it strong for its weight, as the silicone substantially improves the tear strength. It is also highly waterproof, but not breathable. ref cite web url http www.bushwalking.org.au FAQ FAQ SiliconeVsPU.htm title Silicone vs Polyurethane vs Acrylic Proofing accessdate 2007 06 11 author Roger Caffin work aus.bushwalking FAQ ref Many colours are available. It is used in the manufacture of backpacks, tarps and tarp tent s, ditty bags, etc, particularly by Ultralight backpacking ultralight backpackers . Silnylon comes in several main types. The common type is a quiet, silky, very slippery fabric. The variant known as crisp silnylon is lighter, but brittle, noisy, and tears easily. Some versions are made from the stronger type 66 nylon and are used for parachutes, hot air balloons etc. Some use a blend of silicone and urethane which is done partly to reduce the air pollution during manufacture as it reduces the aromatic solvents used in the coating process. Notes references Category Woven fabrics Category Technical fabrics textile stub fabric ... more details
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