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Julie Lamarche

on 22 April 2013

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Transcript of Silicone

let's review shall we... chemistry history how it
our world Silicone Silicone has already and will continue to improve our everyday lives, in ways you might not have even considered or imagined. Silicone Silicone has an undeniable reliability.
Structural silicone sealants installed in buildings around the world in the 1980s are still performing today.

Approximately half of all makeup, hair and skin care, and underarm products introduced today contain silicone.

Silicone finishes are widely recognized as the best materials for increasing the softness of fabrics and enhancing the way they feel. From it's discovery to it's development, silicone has come a long way throughout the decades. It'll be amazing to see what's next for this material... Silicone is improving our quality of lives in ways such as making our cars safer and more reliable, making our homes and offices a safer and healthier place to work , protecting motorcyclists from injury after a fall, and much more. Silicones are the “missing link” between organic and inorganic chemistry.
Silicones in construction can:
-Solve structural glazing and weatherproofing challenges
-Contribute to energy efficiency in buildings
-Improve in-shop productivity and reduce material waste
-Extend building life and reduce life cycle costs
-Help realize sustainable development
-Achieve design freedom Silicone is not a product, but an entire field of chemistry. You'll find out what makes silicone unique and why it is able to deliver so many problem-solving and innovation-enabling benefits. Silicone Silicones have enabled the development of increasingly small, faster, and more sophisticated electronic devices. Well Being Silicones are inert, synthetic compounds with a variety of forms and uses. Typically heat-resistant and rubber-like, they are used in sealants, adhesives, lubricants, medical applications, cookware, and insulation.

Silicones are polymers that include silicon together with carbon, hydrogen, oxygen, and sometimes other elements. Silicone is helping us live happier, healthier, safer lives everywhere!
Here are just some of the ways... Silicone is used in close to every automotive system. It improves performance, protects assemblies, and eliminates leaks, squeaks and rattles which ultimately makes our journey safer. Not only that but it also reduces costly repairs and keeps our vehicles running longer. Things like acid rain, sun, snow, salt, and chemicals can really damage your car. High-performance silicone coatings help protect the coating. Engineered rubber elastomers are ideal for durable sealing and gasketing, helping to increase the heat-resistance of all kinds of vehicle components. Silicone and fluorosilicone rubber elastomers can help increase:

-Driving comfort by reducing noise, vibration and harshness (NVH)

-Performance by eliminating heat shields to reduce mass

-Safety by improving airbag and inflatable curtain performance

-Reliability by remaining strong in heat, cold and harsh operating conditions Silicone airbag coatings and seam sealers are proven to improve inflatable restraint system performance for cut-and-sewn, seam-sealed airbags and one-piece woven (OPW) inflatable airbags. Transportation Hair conditioners formulated with silicone leave your hair solf and silky to the touch, never dull or greasy. Silicone fabric finishes make your clothing softer and more wrinkle-resistant. Healing ointments formulated with silicones leave your skin feeling silky, not sticky. Silicone antifoams used in pulp and paper making operations are more efficient than oil-based antifoams; they shorten processing time and reduce the need for bleaching chemicals. silicone sealants protect the structural integrity of buildings, enable innovative architecture, and lead to the creation of beautiful city skylines. Silicone high-voltage insulator coatings seal out moisture and protect your power supply from costly and dangerous interruptions. Low-VOC and water based silicone formulations reduce the need for air-polluting solvents in manufacturing. Silicone defoamers safely and effectively control foam in wastewater treatment plants. They can also greatly reduce water requirements in industrial processes, such as pulp and tissue manufacturing and textile treatments, reducing industrial demands on the community's water supply. Silicones are helping make solar power an accessible, self-sustaining energy alternative. Because silicones can withstand the sun's unrelenting rays year after year Silicones contribute to sustainable manufacturing by reducing chemical, water, and energy requirements and helping pulp and paper manufacturers meet environmental regulations. Silicone is a generic name for a wide variety of polymeric chains and networks constructed around a backbone of Si-O-Si. Combining the advantages of glass and plastics, silicones are unique materials unlike anything else in the world.
•Like glass (which is silicon-based), silicones are temperature- and moisture-resistant, chemically inert, and dielectric.
•Like plastics (which are carbon-based), silicones are strong and able to assume many forms. Silicone antifoams combat foams in chemical processes. They improve efficiency and optimize capacity, making it easier and more cost effective to produce large volumes of high-quality products. The silicone advantage:
-Silicones are renowned for their UV stability and moisture resistance
-Silicones are durable and solar radiation resistant
-Silicones have excellent electrical insulating properties – excellent dielectric strength and high volume resistivity
-Silicones have low ionic impurities, low moisture absorption and a low dielectric constant
-Silicone encapsulants perform over a wide operating temperature range – from -40 to
150°C (-40 to 302°F)
-Silicones are optically transparent over a wide spectrum
-Silicones offer excellent adhesion to glass and photovoltaic cell substrates
-Optical, mechanical and thermal properties can be varied to meet the requirements of specific photovoltaic applications In the Stone Age, silica-based stones were fashioned into tools.
It's when the ancient Romans taught themselves how to turn sand into glass, that the evolution of silicon-based technology begins. 1800's - scientists such as H.E Sainte-Claire Deville and Dr. Frederick S.Kipping did experiments involving synthesizing the material. 1930's - Dr. J. Franklin Hyde of Corning Glass produces the first commercially useful silicone product - a silicone resin for impregnating and coating glass cloth used in electrical insulation. 1940's - Dr. Eugene Rochow develops a direct method for synthesizing silicones on an industrial scale.
Dow Corning Corporation is established specifically to explore and develop the potential of silicones. A failed attempt at creating a syntehtic rubber compound combining boric acid and silicone oil resulted in one of the most successful toys of the 20th century - Silly Putty.
Dow Corning also also commercialized the first silicone finishes for fabric. 1950's - After reading about the unique properties of silicone in leather treatments, researchers at a major cosmetic company wonder if silicones could benefit dry, damaged skin. The resulting hand lotion is the first personal care product to incorporate silicones. 1960's - Neil Armstrong leaves the first footprint on the moon. He is wearing a silicone rubber boot, which was crucial to the Apollo crew's safety and support systems. 1970's - This was the time where thanks to introduction of flexible, thin-film silicone conformal coatings we saw the development of smaller, lighter electronic components. 1980's- Fifteen newly developed silicone products are put to the test at Le Mans. France's "Grand Prix of Endurance". Once again, silicone proved itself to have the ability to thrive on tough performance challenges. Silicone sealants are used in the restoration of the Statue of Liberty, one of the world's most famous monuments. 1990's- Liquid silicone rubber coatings advance automotive airbag technology and improve airbag performance. Silicone elastomers are used to recreate the face of a 10,000 year old woman from one of the oldest archeological finds in North America. The future of silicone is now, starting with plasmas, photonics, nanotechnology, alternative energy and much more. Who knows what else is in store. The contribution silicone is making to our quality of life and sustainability of our planet is vaste! 2000's Silicone is classified as a metalloid with an atomic mass of 28.0855 amu. It has a melting point of 1410.0 degrees Celsius and a boiling point of 2355.0 degrees Celsius.
Isotope Half Life

Si-28 Stable

Si-29 Stable

Si-30 Stable

Si-31 2.62 hours

Si-32 100.0 years Silicones take many forms - from free-flowing resins, rigid plastics, flexible rubbers, greases, and powders to fluids thinner than water or thick as paste. Thanks to its adaptive quality, thousands of uique silicone products have been engineered to meet the needs of product designers, manufacturers, people, and municipalities world-wide. Some of silicones features include: good wetting and spreading, long-term elasticity, pliability, and flexibility, stability under changing conditions, weather and aging resistance, strong adhesion properties, water repellency, inertness, and excellent dielectric properties. Its versatile abilities are due to its flexible Si-O-Si backbone. It has unique properties that other polymers cannot match. By changing the size or structure of the silicone molecule or by adding different compounds to it, you can enhance or change the way it behaves. Silicone has an amazing range of capabilities.
It can be hard and brittle, or soft and flexible. Silicones can be hydrophobic or hydrophilic. It can destroy foam or stabilize it. Silicones can take many different forms and perform hundreds of different jobs. Last but not least, silicone improves our environment. Silicones have been used safely and successfully in personal care products for more than 30 years.

If an organic sealant needs to be cut out and replaced every seven years, the amount of garbage produced and solvents used will be at least three times greater than if a longer-lasting silicone sealant had been used.

Many silicone fluids and elastomers can be recycled.

Silicones help manufacturers eliminate water-wasting process steps and reduce the use of air-polluting solvents. Silicone has a low thermal conductivity and chemical reactivity. It has a good electrical insulation and thermal stability. As well as excellent resistance to oxygen and ozone.
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