Glass fiber coated with silicone is to coat silicone rubber on the surface of glass fiber through a specific process to form a high-performance, multi-purpose composite material. The following is a detailed analysis of glass fiber coated with silicone:
1. Material properties
Glass fiber:
It is an inorganic non-metallic material with excellent performance. It is made of six kinds of ores as raw materials through high-temperature melting, wire drawing and other processes.
The diameter of the single filament is small, usually between a few microns and more than twenty microns, which is equivalent to 1/20~1/5 of a hair.
It has a certain hardness, so it may cause itching after contact.
Silicone rubber:
It is a high-quality coating material with excellent heat resistance, flame retardant properties, weather resistance, chemical resistance and high insulation.
The colloid has low viscosity, good fluidity, and is easy to operate. It is suitable for processes such as scraping and dipping.
2. Coating process
Substrate preparation: Select high-quality glass fiber cloth as the substrate.
Silicone rubber processing: Put the silicone rubber into the open mill for refining treatment, and then transport it to the three-roll calender for calendering to obtain the required thickness and width.
Coating: Silicone rubber is evenly coated on the surface of glass fiber cloth by scraping, dipping or calendering.
Vulcanization: Vulcanization treatment is carried out under high temperature conditions to make silicone rubber and glass fiber cloth closely bonded to form a strong composite material.
3. Performance characteristics
High temperature and low temperature resistance: It can be used for a long time between -70℃ and 280℃ (or even higher temperatures, such as high-silicon silicone cloth used for a long time at 900℃), with good thermal insulation performance.
High strength: It is both soft and tough and can be cut and processed.
Chemical corrosion resistance: It is oil-resistant, waterproof, scrubbable, and has excellent chemical resistance and aging resistance.
High insulation: It has high insulation performance, a dielectric constant of 33.2, and a breakdown voltage of 2050KV/MM.
Flame retardant and environmentally friendly: Flame retardant silicone rubber uses environmentally friendly flame retardants and meets EU environmental standards.
4. Application fields
Aerospace: Used to manufacture thermal insulation materials and sealing materials for spacecraft.
Chemical industry: As an anti-corrosion layer, sealing gasket, etc. for chemical equipment.
Petroleum: used for anti-corrosion layer of petroleum pipelines, flexible connectors, etc.
Electrical insulation: made into insulating cloth, casing and other products for insulation protection of electrical equipment.
Construction: used as building sealing materials, fire curtains, etc.
In summary, glass fiber coated silicone has many excellent performance characteristics and is widely used in various fields. Through continuous process improvement and material innovation, its application field will continue to expand.