Silicone

Silicon is the second element that has in the earth’s abundance, this contains about 28%. It is not found in its elemental form, but comes in the form mainly of the oxides and silicates. In contrast to carbon, silicon and silicon commitments are rare. Natural compounds are silicon – carbon extremely rare, but they can be created synthetically.

Silica is a three-dimensional network of Siliziumsdioxids, most frequently encountered that sand. Silica exists in crystalline and amorphous forms. Silica is chemically resistant to the usual temperatures, but may undergo several changes at high temperatures and rushed. The industrial production of amorphous silica requires temperatures of 500 C and much higher temperatures are necessary to produce crystalline silica.

The extended dust around the crystal-clear silica inhalation is united to silicosis. Amorphous silica is much less pathogenic than crystalline forms. Conversion of amorphous silica with crystal-clear can not occur in the body temperature. High purity amorphous silica is used as reinforcing agent to increase the resistance against the crack of the rubbers used in medical equipment and silicone implants.

Silicones are synthetic polymers and are therefore not naturally present. They have a linear relationship, repeating silicon – richer in oxygen backbone with, similar to silica. However, the organic directly to the silicon atoms by carbon compounds linked groups – silicon, preventing the formation of three-dimensional network in silica.
These types are like the composition also known polyorganosiloxane. Certain organic groups can be used to connect two or many of these back muscles include silicon – oxygen and the nature and extent of this reticulation allows a wide variety of products for manufacturing. The main materials used in medical implants are fluids, frosts and rubbers whose physical properties and are chemically, among others, a high degree of chemical inertness, thermal stability and resistance against oxidation included.

Silicones are liquids polydimethylsiloxane linear chains is usually associated with a wide gamut of the chain lengths and molecular masses. The cyclic polydimethylsiloxane also to occur and are important mediators in the production of linear chain of the liquids. They are virtually insoluble in water.

Silicon is the second element that has in the earth’s abundance, this contains about 28%. It is not found in its elemental form, but comes in the form mainly of the oxides and silicates. In contrast to carbon, silicon and silicon commitments are rare. Natural compounds are silicon – carbon extremely rare, but they can be created synthetically. Silica is a three-dimensional network of Siliziumsdioxids, most frequently encountered that sand. Silica exists in crystalline and amorphous forms. Silica is chemically resistant to the usual temperatures, but may undergo several changes at high temperatures and rushed. The industrial production of amorphous silica requires temperatures of 500 C and much higher temperatures are necessary to produce crystalline silica. The extended dust around the crystal-clear silica inhalation is united to silicosis. Amorphous silica is much less pathogenic than crystalline forms. Conversion of amorphous silica with crystal-clear can not occur in the body temperature. High purity amorphous silica is used as reinforcing agent to increase the resistance against the crack of the rubbers used in medical equipment and silicone implants. Silicones are synthetic polymers and are therefore not naturally present. They have a linear relationship, repeating silicon – richer in oxygen backbone with, similar to silica.

However, the organic directly to the silicon atoms by carbon compounds linked groups – silicon, preventing the formation of three-dimensional network in silica. These types are like the composition also known polyorganosiloxane. Certain organic groups can be used to connect two or many of these back muscles include silicon – oxygen and the nature and extent of this reticulation allows a wide variety of products for manufacturing. The main materials used in medical implants are fluids, frosts and rubbers whose physical properties and are chemically, among others, a high degree of chemical inertness, thermal stability and resistance against oxidation included. Silicones are liquids polydimethylsiloxane linear chains is usually associated with a wide gamut of the chain lengths and molecular masses. The cyclic polydimethylsiloxane also to occur and are important mediators in the production of linear chain of the liquids. They are virtually insoluble in water.

The frosts of the silicone, polysiloxane networks have reticule slightly swollen with PDMS fluid to produce a homogeneous mass. The liquid PDMS is not chemically bound to the grid reticule, but only by means outside, stored only is water in a sponge and ya she is a tendency for the “bleeding” of liquid. The degree of reticulation and the amount of liquid used in the physical properties of frost and the speed at which a liquid “to” their lost ground. Once properly reticule, keep the frosts of the silicone, their outward form, without locking up.

The silicone elastomers are widely reticule and contain little free PDMS fluid. The lining of the barrier of the shells of the breast implant is a silicone elastomer of the special, which is selected specifically to minimize the migration of PDMS from the implants. The tensile strength and tearing of the silicone elastomers can be augmented by the addition of amorphous silica, the preliminary agreements with the organosilicon compositions generally is to allow him to become closely integrated into the polymer network.

The silicone materials contain a relatively high proportion of silicon (generally about 20% in mass for PDMS). The quantitative Siliziumsmaß has proved so to be a convenient means to determine the silicon content on industrial materials. This method has the advantage of greater simplicity, as opposed to specific techniques in groups of the silicone. The analysis should consider the possibility of high levels of accidental contamination of the reactive and the material that comes from the wide distribution of natural silicon in the form of silica and silicates.

While it is to be determined in industrial applications, is convenient to measure silicon as agents, the content of the silicone material, it does not state that the same proportions are busy in the human body: in other words not acceptable to you, that silicon is a indicator of silicone in the body. Silicon levels by themselves should not be interpreted as a precise measure of the content of silicone in the body fluids.

He one of the silicone materials generally widespread use and it is difficult to avoid issuing them. Silicon is used in medicines that are used in the diet change (for example, canned food and ready meals) incorporated; used in a wide range of medical equipment, used as putty and seal products. The use of the silicone oils in the change of food and food contact can give a systémique exhibition in the small chain silicone components occasion, which are known because they are absorbed by the gastro-intestinal tract. Silicon is used in personal and domestic use products such as cleaning solvents, hand cream, which are made for the hair and skin and the anti-sweat. It can be absorbed through oral route or through the skin and the recording can be on a ladder “minimal” on the measure “good”.

Silicone is incorporated into certain drugs and medical equipment as well. For example, the silicone oil lubricant in the syringe and is used as the populations in general, to give blood. The results achieved by insulino-dependent diabetes people are exposed to the low doses, but regularly the silicone oil, which carry away a large exhibition in cumulative silicone during a period of time. Silicones are also used in surgery to repair the detachment of the retina.


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