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[Chemical Knowledge]：The production and manufacturing method and process of silicone.

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Manufacturing methods
of organic silicon
1. Introduction

organic silicon compounds are a unique class of chemical substances, because of their unique physical and chemical properties, in the field of chemical production raw materials have a wide range of applications. These compounds are mainly composed of silicon, oxygen and organic groups, and generally have excellent heat resistance, cold resistance, electrical insulation, oxidation resistance, corrosion resistance and low surface tension. This article will detail the manufacturing method of silicone.

2. Silicone Manufacturing Methods

1. Synthesis
of Silicones
Silicones are mainly prepared by the synthesis of siloxanes. Siloxanes are the basis of organosilicon compounds and generally consist of silicon atoms, oxygen atoms and organic groups. The synthesis of siloxanes proceeds mainly by the reaction of metal organic compounds with silanols, or by the reaction of silicon halides with alkoxides.

2. Equilibrium reaction

In the process of synthesizing siloxane, it is necessary to control the balance of the reaction to ensure the purity of the product. The equilibrium of the reaction is generally controlled by adjusting the molar ratio of the reactants, the reaction temperature, and the reaction time.

3. Use of Catalyst

In order to accelerate the synthesis reaction of siloxane, it is necessary to use a catalyst. Commonly used catalysts include acidic and basic catalysts, such as hydrochloric acid, sulfuric acid, sodium hydroxide, and the like.

4. Purification

The synthesized siloxanes generally need to be purified to remove impurities therein. Commonly used purification methods are distillation, extraction, crystallization, etc.

3. specific application

silicone in many fields have a wide range of applications, the following list a few specific application examples:

1. Sealant: silicone sealant has excellent weather resistance, high and low temperature resistance and electrical insulation, widely used in construction, automotive, electronics and other industries.
2. Coating: Silicone coating has excellent heat resistance, cold resistance, corrosion resistance and UV resistance, and can be used to protect various substrates.
3. Elastomer: Silicone elastomer has excellent high and low temperature resistance, oxidation resistance and electrical insulation, and can be used to make various seals and elastic components.

4. development prospects

With the continuous development of science and technology, the application field of silicone is also expanding. In the future, silicone materials will be used in more fields, such as new energy, biomedicine, aerospace and so on. At the same time, with the improvement of environmental awareness, the development of environmentally friendly silicone materials will also become the future development trend.

5. conclusion

organic silicon as a unique chemical raw material, has a wide range of applications in many fields. The manufacturing method mainly includes the synthesis of siloxane, the control of equilibrium reaction, the use of catalyst and the purification of products. In the future, with the continuous development of science and technology, the application field of silicone will be further expanded. At the same time, we also need to pay more attention to environmental protection in the manufacturing process and develop environmentally friendly silicone materials.

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