What are the main application fields of silicone sealant?
Silicone sealant (also known as silicone adhesive) is a polymer material with multiple properties such as adhesion, sealing, weather resistance, and insulation. Depending on formula and performance differences, it can be divided into multiple categories including structural adhesives, weather-resistant adhesives, sealing adhesives, and thermal conductive adhesives. Its main application fields cover various industries such as construction, photovoltaic, electronics and electrical appliances, automotive, and new energy, which are detailed as follows:
- Construction Industry: The Core Application FieldThis is the most traditional and largest application market for silicone sealants, accounting for more than 50% of the total consumption.
Curtain Wall Engineering: Silicone structural adhesives are used for the structural bonding and fixing of glass curtain walls, stone curtain walls, and metal curtain walls. They can bear the dead weight of curtain walls and external loads (such as wind pressure and seismic force), while also having the properties of high and low temperature resistance and UV aging resistance. Silicone weather-resistant adhesives are used for sealing between curtain wall panels to prevent rainwater leakage and air penetration.
Door and Window Installation: It is used for caulking and sealing between aluminum alloy doors and windows, plastic steel doors and windows and walls, as well as the lap joint sealing of door and window frames and sashes, improving the airtightness, watertightness and sound insulation of doors and windows.
Home Decoration: Sealing between countertops, sinks, toilets and walls in kitchens and bathrooms; caulking of skirting lines and suspended ceilings; filling of tile gaps (neutral silicone sealants can avoid corrosion of metal components).
- Photovoltaic New Energy Field: The High-growth Application MarketWith the rapid development of the photovoltaic industry, photovoltaic-specific silicone sealants have become core products in the segmented field, which is also the application scenario of photovoltaic silicone sealants mentioned earlier.
Photovoltaic Module Encapsulation: It is used for bonding and sealing between photovoltaic module frames and glass, backsheets, preventing water vapor and dust from entering the module interior, and ensuring the stability and service life of battery cells. It is also used for potting and sealing of module junction boxes to improve insulation performance.
Photovoltaic Power Station Construction: It is used for fixing and sealing between photovoltaic supports and foundations, as well as waterproof sealing of electrical equipment such as inverters and combiner boxes.
Other New Energy Scenarios: Sealing, heat insulation and insulation of power battery packs; bonding and sealing of wind turbine blades, etc.
- Electronics and Electrical Appliances Industry: Precision Application ScenariosSilicone sealants have excellent insulation, thermal conductivity and high and low temperature resistance, meeting the precision manufacturing needs of electronics and electrical appliances.
Home Appliance Manufacturing: Sealing of refrigerator and air conditioner door bodies, fixing of pipelines; sealing between inner and outer barrels of washing machines; bonding and sealing of high-temperature resistant components of microwave ovens and ovens.
Electronic Components: Fixing, moisture-proof sealing of electronic components on circuit boards; encapsulation and heat dissipation bonding of LED lamps; waterproof and insulation treatment of sensors.
- Automotive Industry: Lightweight and Sealing RequirementsSilicone sealants play multiple roles such as bonding, sealing, shock absorption and insulation in automotive manufacturing, helping the lightweight upgrading of automobiles.
Body Manufacturing: Sealing of car doors and windows; caulking and sealing of body sheet metal joints; bonding and fixing of roof racks and spoilers.
Power System: Sealing of engine blocks, heat insulation bonding of exhaust pipes; sealing of power battery packs (a core application for new energy vehicles).
Interior Assembly: Fixing and sealing of interior parts such as instrument panels, seats and door panels, improving the sound insulation and shock absorption effects inside the car.
- Other Segmented Fields
Aerospace: Sealing of aircraft cabins, insulation and fixing of avionics equipment. Silicone sealants are required to have the properties of extreme temperature resistance, high pressure resistance and radiation resistance.
Medical Field: Bonding of medical silicone products (such as medical catheters and prostheses), which must meet the biocompatibility standards.
Marine Field: Waterproof sealing of ship decks and cabins, as well as anti-corrosion sealing of marine equipment, which requires salt spray resistance and seawater erosion resistance.
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