What Is High Temperature Silicone?

Organic silicon, that is, an organic silicon compound, refers to a compound containing a Si-C bond and at least one organic group is directly connected to a silicon atom. It is customary to use organic compounds and silicon atoms through oxygen, sulfur, and nitrogen. The linked compounds are also treated as organosilicon compounds. Among them, polysiloxanes with a silicon-oxygen bond (-Si-O-Si-) as the skeleton are among the most organosilicon compounds, the most researched and widely used, accounting for more than 90% of the total amount .

structure

Silicone materials have a unique structure:

(1) Sufficient methyl groups on the Si atom will have high energy

basic introduction

The basic structural unit of silicone products is composed of silicon-oxygen links, and the side chains are connected to various other organic groups through silicon atoms. Therefore, the structure of the silicone product contains both "organic groups" and "inorganic structures". This special composition and molecular structure make it integrate the characteristics of organic matter and the function of inorganic matter. With other

Because silicone has these excellent properties, its application range is very wide. It is not only used as a special material in aviation, cutting-edge technology, military technology departments, but also in

Although organic silicon is widely used, its history is only over 100 years.

French chemist in 1863

Organic silicon materials can be divided into: silane according to their morphology

China has become the largest consumer of silicone materials. Due to the large number of exports of textiles, electronics, and electrical products, and the strong demand for silicone materials in domestic construction, textile, automotive, and daily chemical industries, the development of China's silicone materials has been promoted and promoted. In 2010, the consumption of silicone in China reached 555,000 tons, accounting for 36% of the global total. It became the world's largest consumer of organic silicon; China's industrial structure based on processing and manufacturing has caused China's silicone consumption structure and other global There are great differences between countries and regions. In other countries and regions, the proportion of silicone rubber and silicone oil is average, and China is dominated by silicone rubber.

During the "Twelfth Five-Year Plan" period, China's average annual growth rate of organic silicon consumption is expected to remain at about 18%. In 2015, silicone consumption is expected to reach approximately 1.3 million tons, equivalent to approximately 2.6 million tons of silicone monomers. In 2010, China's organic silicon (silicon siloxane) output was about 410,000 tons; consumption was 555,000 tons. On the one hand, organic silicon continues to grow steadily in traditional applications, and on the other hand, it continues to develop new uses in new energy, energy saving and environmental protection, medical and health, and high-end manufacturing, especially in solar cells, LEDs, personal care products, and rails. In terms of transportation and alternative petroleum-based products, its application has developed rapidly. Due to the vast market space, organic silicon has been included in the "12th Five-Year Plan" for new materials. More than 20 organic silicon products have been included in the product catalog of the "12th Five-Year Plan" for new materials.

The Twelfth Five-Year Plan for organic silicon will strictly restrict the entry threshold and control the growth of production capacity. In 2015, the production capacity will reach 3 million tons, which will meet domestic demand and export slightly. The plan proposes that by 2015, 3-5 organic silicon monomer backbone enterprises with international competitiveness will be formed. The plan shows that silane coupling agents should build 2-3 enterprises with a scale of more than 30,000 tons / year and use of green environmental protection technology. The total output in 2015 will reach 400,000 tons and the number of varieties will exceed 100.

Plant purification of bioactive silicones is currently only mastered by developed countries such as France. The important role of organic silicon in living organisms makes organic silicon products have great application prospects. In the next few years, the organic silicon products extracted from plant activity will definitely expand in the fields of medicine, beauty, health care and other fields.

The consumption ratio of organic silicon products in various industries depends on the industrial structure at the time. Taking Japan as an example, the distribution in 1988 was: electronic appliances accounted for about 25% -30%, construction accounted for 15% -20%, cars accounted for 10% -15%, food and medical accounted for 10%, office machinery accounted for 10%, and the rest (Including fiber, paper, plastic, paint, etc.) accounted for 15% -30%. It can be seen that electronics, construction, and automobiles are the three pillars of the country's organic silicon market. The market development trend in recent years, the development speed of electronics and electronics still ranks first. The reliability and durability of organic silicon materials have continued to increase their application in the construction and automotive industries; due to the physiological inertness and The safety and reliability of the human body have been further confirmed, so the number of applications of silicones in medical and cosmetics has increased dramatically.

Development of silicon

In 2011, China's industrial silicon output was 1.36 million tons, a year-on-year increase of 15.2%. The industry realized product sales revenue of 39.201 billion yuan, a year-on-year increase of 46.43%. Since 2008, the average annual growth rate has exceeded 20%, and total profits have reached 3.352 billion. Yuan, a year-on-year increase of 77.05%. From January to June 2012, the number of China's organic silicon industry enterprises was 305, an increase of 19.61% over the same period last year; 65,300 employees, an increase of 19.03% over the same period last year.

From the perspective of business scale, in the first half of 2012, the industry asset scale was 32.445 billion yuan, an increase of 34.42% year-on-year, sales revenue was 28.395 billion yuan, an increase of 56.98% year-on-year, and the total industrial output value was 28.897 billion yuan. From the perspective of operating efficiency, in the first half of 2012, the organic silicon industry realized product sales profits of 2.862 billion yuan, an increase of 27.20% year-on-year, and total profits of 1.544 billion yuan, a decrease of 1.87% over the same period of the previous year. Generally speaking, the overall operating situation of China's organic silicon industry in the first half of 2012 was relatively good, and both assets and production and sales scales achieved rapid growth.

From the perspective of the consumption of organic silicon, the data shows that in 2011 China's domestic consumption of industrial silicon totaled 610,000 tons, an increase of 27.1% year-on-year, of which organic silicon consumption accounted for 32.79%, a decrease of 3.67 percentage points from the previous year. Aluminum alloy Consumption of castings has also declined, and

At present, the development direction of the world's silicone materials technology is high performance, multifunctionality and compounding. Through the advancement of technology and the addition of new additives, and through the modification of cross-linking methods, copolymerization, blending and other modification technologies, organic polymerization is achieved. The compounding of materials and silicone materials is an important direction for the development of current silicone technology. According to the needs of scientific and technological workers, they have designed a variety of silicone products with different molecular structures through the following ways to meet the needs of different occasions, especially high-tech development ^[2]

Several suggestions on the development of China's organic silicon industry. At present, the global organic silicon demand is rapidly growing, and organic silicon is entering a new round of growth. The strong development of foreign organic silicon companies in China has greatly affected China's organic silicon industry. The organic silicon industry is facing new opportunities and a new round of competition at a higher level. It is recommended to consider countermeasures from the following aspects ^[2]

Maintain bone growth

Osteoporosis is one of the characteristics of human aging. As calcium is constantly lost from the major systems of the body, our bones become fragile, and simply taking calcium-containing nutrients is not enough to stop this threat and disease. Because the human body needs silicone to help absorb and utilize these inorganic calcium.

There is evidence that if people add calcium arbitrarily, not only does it not help bones heal, but it will leached the existing calcium in the bones, thereby accelerating the process of degenerative diseases like osteoporosis and affecting the body's support and connective tissue.

For osteoporosis, silicone can relieve pain and even restore the body's self-healing function. For postmenopausal women, osteoporosis is the most common disease, and data show that the number of deaths from fractures caused by this has exceeded the sum of breast cancer, cervical cancer and uterine cancer combined.

Osteoporosis is usually caused by the loss of calcium around the bone protein, which causes the bones to become thinner. Gradually, the nutrients in the bone matrix are lost, causing the cavity to expand. Therefore, even in the normal pressure range, the bone may break. Therefore, it is a very important repair method to mineralize the calcium in the body into the bones. It is suggested that the organic silicon element should be supplemented properly every day in order to better precipitate phosphorus, magnesium and calcium into the bone, especially for the absorption of calcium, which is of vital importance.

Increasing research evidence shows that even in the case of insufficient calcium, the human body can use silicon to transform the protective structure required by bones, but without silicon, it is difficult for other minerals to have similar effects to serve this purpose. A role. Therefore, scientists silicone is a prerequisite for calcium absorption and utilization.

Connective tissue essential elements

Connective tissue consists of collagen, elastin, mucopolysaccharides, carbohydrates and other substances. Moisturizing mucus is needed to help around these tissue cells. With them, you can make tissue cells elastic and vibrant, and prevent aging. Studies have found that among these mucus macromolecular substances, silicones account for a large proportion, they are like a "glue" that holds collagen firmly together. So if there is a sufficient amount of silicone in the human body, more collagen will be bound together, and from a macro perspective, people and organs will become younger.

With the aging of the human body, various connective tissues lose nutrients and become stiff, so that human tissues cannot get enough nutrients and decline. Silicones can help slow down the process of degeneration of these connective tissues.

If you regularly take organic silicon-containing nutrients, you can keep your skin young. Especially when the skin appears slack and wrinkles, in addition to supplementing appropriate protein, taking a plant-derived organic silicon nutritional agent can achieve skin health and beauty.

Promote hair growth

Hair is the most natural beauty accessory. Healthy hair protects a person's scalp and is a magic weapon to increase attractiveness. It was found that 90 micrograms of silicone per gram of hair was close to 100 micrograms per gram of bone. Silicone is an important factor for hair growth and strength.

Strong teeth and gums

By strengthening enamel, silicones can prevent tooth decay and protect teeth. At the same time, it can prevent gum bleeding, gum atrophy, decay and loosening.

Plant-derived active silicones have outstanding clinical manifestations against caries (ulcers, bones, tooth decay) and inflammation.

Make nails healthy

The nail plate is mainly composed of various proteins, with an average growth of four or five millimeters per month, but the weakness of the nails is usually a precursor of osteoporosis, that is, the phenomenon of local decalcification. At this time, if the silicone can be supplemented in time, the healthy growth of the nails can be guaranteed . Silicones will beautify the appearance of your nails, increase their hardness, make them more shiny and not easily break.

In fact, the most significant effect of silicone is on human hair, skin, nails and teeth. Our skin and hair need silicone, which works the same way as other tissues, because silicone is a support for binding collagen, sugars and other nutrients. That's why silicone is so important for skin, teeth, and hair.