Silastic rubber data sheet-Silicone O-Rings & Silicone Gaskets | Marco Rubber

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Silastic rubber data sheet

Questions or comments about MatWeb? S60 FDA. The Japanese company Shin-Etsu Chemical began mass production of silicone in Polymax [ citation needed ]. The other is dichlorobenzoyl peroxide, whose principal breakdown products are dichlorobenzoic acid and dichlorobenzene. In its uncured state, silicone rubber is a highly-adhesive Silastic rubber data sheet or liquid. Categories : Elastomers Sculpture materials Silicones Siloxanes. Namespaces Article Talk. They do not require the use of a release agent since silicones have non-stick properties. Silicone Silastic rubber data sheet is a reliable solution as opposed to rubber and thermoplastic elastomers for migration or interaction problems between the main active ingredients.

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A group of elastomers, made from silicon, oxygen, hydrogen and carbon, Silicones are renowned for their retention of flexibility and low compression set characteristics, within one of the widest working temperature ranges for elastomers.

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Silicone rubber is an elastomer rubber-like material composed of silicone —itself a polymer —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. In its uncured state, silicone rubber is a highly-adhesive gel or liquid.

In order to convert to a solid, it must be cured , vulcanized , or catalyzed. It can also be injection molded. Silicone rubber may be cured by a platinum -catalyzed cure system, a condensation cure system, a peroxide cure system, or an oxime cure system.

For the platinum-catalyzed cure system, the curing process can be accelerated by adding heat or pressure. In a platinum-based silicone cure system, also called an addition system because the key reaction-building polymer is an Addition reaction , a hydride - and a vinyl -functional siloxane polymer react in the presence of a platinum complex catalyst, creating an ethyl bridge between the two [1].

The reaction has no byproducts. Such silicone rubbers cure quickly, though the rate of or even ability to cure is easily inhibited in the presence of elemental tin , sulfur , and many amine compounds. Condensation curing systems can be one-part or two-part systems. The silanol condenses further with another hydrolyzable group on the polymer or cross-linker and continues until the system is fully cured.

The crosslinkers used in condensation cure systems are typically alkoxy, acetoxy, ester, enoxy or oxime silanes such as methyl trimethoxy silane for alkoxy-curing systems and methyl triacetoxysilane for acetoxy-curing systems. In many cases an additional condensation catalyst is added to fully cure the RTV system and achieve a tack-free surface. Organotitanate catalysts such as tetraalkoxy titanates or chelated titanates are used in alkoxy-cured systems. Acetoxy tin condensation is one of the oldest cure chemistries used for curing silicone rubber, and is the one used in household bathroom caulk.

Depending on the type of detached molecule, it is possible to classify silicone systems as acidic, neutral or alkaline. Two-part condensation systems package the cross-linker and condensation catalyst together in one part while the polymer and any fillers or pigments are in the second part.

Mixing of the two parts causes the curing to take place. Once fully cured, condensation systems are effective as sealants and caulks in plumbing and building construction and as molds for casting polyurethane, epoxy and polyester resins, waxes, gypsum, and low-melting-temperature metals such as lead. They are typically very flexible and have a high tear strength. They do not require the use of a release agent since silicones have non-stick properties. Peroxide curing is widely used for curing silicone rubber.

However, these products are usually treated in a postcure oven which greatly reduces the peroxide breakdown product content.

One of the two main organic peroxides used, dicumyl peroxide compare cumene hydroperoxide , has principal breakdown products of acetophenone and phenylpropanol. The other is dichlorobenzoyl peroxide, whose principal breakdown products are dichlorobenzoic acid and dichlorobenzene. The first silicone elastomers were developed in the search for better insulating materials for electric motors and generators.

Resin-impregnated glass fibers were the state-of-the-art materials at the time. The glass was very heat resistant, but the phenolic resins would not withstand the higher temperatures that were being encountered in new smaller electric motors. Chemists at Corning Glass and General Electric were investigating heat-resistant materials for use as resinous binders when they synthesized the first silicone polymers, demonstrated that they worked well and found a route to produce them commercially.

The term "silicone" is actually a misnomer. The suffix -one is used by chemists to denote a substance with a double-bonded atom of oxygen in its backbone. When first discovered, silicone was erroneously believed to have oxygen atoms bonded in this way. Technically correct term for the various silicone rubbers is polysiloxanes or polydimethylsiloxanes. Corning Glass in a joint venture with Dow Chemical formed Dow Corning in to produce this new class of materials.

Wacker Chemie also started production of silicones in Europe in The Japanese company Shin-Etsu Chemical began mass production of silicone in The companies mentioned above are now still the main competitors in the oligopoly that comprises the silicone industry. Silicone rubber has low tensile strength, poor wear and tear wear properties.

Silicone rubber is a material of choice in industry when retention of initial shape and mechanical strength are desired under heavy thermal stress or sub-zero temperatures. This makes silicone rubber one of the elastomers of choice in many extreme environments. Due to its inertness, it is used in many medical applications including medical implants. Silicone rubber is a reliable solution as opposed to rubber and thermoplastic elastomers for migration or interaction problems between the main active ingredients.

To make silicone, the silicon atoms must be isolated from the silicon dioxide compound silica. From here, there are several processes where silicon is combined with methyl chloride and heated.

It is then distilled into a polymerised siloxane known as polydimethylsiloxane. The polydimethylsiloxane can then be polymerised. This is done using a variety of techniques depending on the use of the final product. Polysiloxanes differ from other polymers in that their backbones consist of Si—O—Si units unlike many other polymers that contain carbon backbones.

For example, a C—C backbone unit has a bond length of 1. Because the bond lengths are longer, they can move farther and change conformation easily, making for a flexible material. Polysiloxanes also tend to be chemically inert, due to the strength of the silicon-oxygen bond.

Silicone rubber is available in a range of hardness levels, expressed as Shore A or IRHD between 10 and , the higher number being the harder compound. It is also available in virtually any colour, and can be colour matched. Once mixed and coloured, silicone rubber can be extruded into tubes, strips, solid cord or custom profiles according to the size specifications 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. Manufacturers work to set industry tolerances when extruding, cutting or joining silicone rubber profiles.

Silicone rubber is used in automotive applications, many cooking, baking, and food storage products, apparel including undergarments, sportswear, and footwear, electronics, to home repair and hardware, and a host of unseen applications. Liquid silicone rubber is also manufactured for life science applications syringe pistons, closure for dispensing system, gaskets for IV flow regulator, respiratory masks, implantable chambers for IV administration , cosmetic products Mascara brush, make-up packaging, make-up applicator and lipstick moulds and optics products circular lens, collimators , Fresnel lenses and free form lenses.

Its property of not having a carbon backbone, but a chemically robust silicon backbone instead, reduces its potential as a food source for dangerous waterborne bacteria such as Legionella. Non-dyed silicone rubber tape with an iron III 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 self-amalgamating tape amalgamates or fuses to itself, so that when stretched and wrapped around cables, electrical joints, hoses and pipes it bonds into a strong seamless rubbery electrically insulating and waterproof layer, although not adhesive.

In , silicone rubber formed the matrix of the first autonomic self-healing elastomer. Additionally, this material had improved fatigue properties as evaluated using a torsion-fatigue test. From Wikipedia, the free encyclopedia. Chem Soc. Pharmaceutical Polymers Smithers Rapra.

L and Pizzi, A. Retrieved Viking Extrusions". Foam rubber Micronized rubber powder Cold rubber. Polymer additive Plasticizer Polymer stabilizers Biodegradable additives Filler materials.

Rubber tapping Rubber technology Vulcanization. Rubber pollution Great Pacific garbage patch Persistent organic pollutant Dioxins Environmental hazards Tire-derived fuel Rubber recycling Airfield rubber removal.

Categories : Elastomers Sculpture materials Silicones Siloxanes. Hidden categories: All articles with unsourced statements Articles with unsourced statements from January Namespaces Article Talk. Views Read Edit View history.

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Silastic rubber data sheet

Silastic rubber data sheet

Silastic rubber data sheet

Silastic rubber data sheet

Silastic rubber data sheet

Silastic rubber data sheet. Buying Options

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SILASTIC® Technical Data Sheets

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Silastic rubber data sheet

Silastic rubber data sheet

Silastic rubber data sheet