For most people, "organic silicon" is a very unfamiliar name, and even some different formula design engineers and consumers will mistakenly think that organic silicon is a petrochemical product extracted from petroleum resources. In fact, however, silicone is sourced from sand, which is also known as quartz, which is composed of two earth-abundant elements—oxygen and silicon, the main component of which is silicon dioxide.
You can't live without silicones. As an environmentally friendly building material with excellent technical performance, silicone has already penetrated all aspects of our lives unconsciously, from the clothes we wear, to the food we eat, to the houses we live in, to the cars we take, high-speed trains, and the roads we walk through. Roads, bridges to cross... Life is inseparable from foamed silicone, now and even more so in the future! This mainly includes silicone resin, silicone rubber and other organic silicon for product structure materials, and there are many different types of products. Excellent properties of foamed silica gel: As one of the application forms of silicone rubber product materials, foamed silica gel is a soft elastomer compound.
It not only has the high and low temperature resistance, heat aging resistance, UV resistance and high flame retardancy of silicone rubber materials, but also has the sound absorption, shock absorption, sealing and high resilience properties of foam materials. The specific performance is as follows:
1. High and low temperature resistance
Foam and silica gel have excellent mechanical system performance in high temperature (above 200°C) environments, and still have their own certain toughness and elasticity, and the glass transition temperature (Tg) can be as low as -70°C. Generally speaking, the working temperature of foamed silica gel is -100°C to 350°C, and can withstand instantaneous high temperature of thousands of degrees. It is often used in the production of high-temperature heat-resistant coatings in the aviation field.
2. High flame retardancy
Compared with polyurethane foam, foam silicone can well meet the requirements in terms of flame retardancy, its foam density is 0.08 ~ 0.15 g u002F cubic meter, and its service life can reach 2 ~ 4 times that of polyurethane foam. In addition, its comfort, foam density and environmental protection are also significantly better than polyurethane foam, and it is expected to replace traditional polyurethane foam in the aerospace, rail transit, and high-end automotive industries.
3. Electrical insulation
Silicone foam has good insulation, and the silicon dioxide formed after burning is still an insulating substance. In addition, silicone foam is not easy to scorch when the arc is discharged, because the number of carbon atoms in its economic structure is relatively small, and its reinforcing filler, white carbon black, is suitable for high-voltage working occasions.
4. Physiological inertia
The surface of the silicone foam is hydrophobic, so the physical properties are hardly reduced in a humid environment, and the adhesion is poor, which can play an isolation role. And its own environmental protection, non-toxic and tasteless, harmless to human health, which also caused its excellent physiological inertia. At the same time, it is also very superior in anti-aging.
About foamed silicone, please check the details:
https://www.siliconefoam.net/product-iota-f663a,b-liquid-silicone-rubber-foam-.html
