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Encyclopedia of Commonly Used Industrial Structural Adhesives
发布时间: 2025-08-23 15:26
Structural adhesives are widely used in engineering applications. They offer high strength, peel resistance, impact resistance, and simple application. They are primarily used for bonding homogeneous or dissimilar materials, such as metals, ceramics, plastics, rubber, and wood.
Below, let's compare structural adhesives based on different substrates to help you choose the right adhesive for your application.
1. Polyurethane Structural Adhesive
It can achieve very high elongation (>100%) while maintaining structural adhesive properties. It has excellent bonding properties to thermoplastics and thermosets. It cannot form a durable bond to untreated metals. It can operate at temperatures up to 120°C.
2. Epoxy Structural Adhesive
It has relatively low elongation. It has good high-temperature resistance—it remains chemically stable at 121°C or even 204°C. It has excellent chemical resistance. It bonds well to porous substrates and most materials, but the surface must be clean.
3. Anaerobic Structural Adhesive
Easy to use, requires minimal adhesive, is easy to store, and offers high compliance, making it convenient for halting production lines. It is non-flammable and non-explosive, solvent-free, and non-volatile, making it harmless to operate. It is solvent-free, low-toxic, and has minimal hazards and pollution. It has a wide range of applications, including sealing, locking, holding, bonding, and leak-proofing. It is stable and has a long shelf life.
4. Instant Adhesive
It offers fast curing, high bond strength, and is easy and convenient to use, highly versatile, and resistant to aging.
5. Acrylic Structural Adhesive
It offers fast curing and high strength, achieving initial fixation in about 5 minutes, reaching 80% strength after 30 minutes, and reaching peak strength after 24 hours. It offers excellent resistance to acids, alkalis, water, and oils, as well as high temperature and aging resistance. It has strong adhesion to metals, superior impact strength to epoxy resins, and excellent heat and cold resistance, operating within a temperature range of -30°C to 150°C.
6. Silicone Structural Adhesive
As the sole connecting component and load transferrer between the curtain wall glass and the backing aluminum alloy frame, silicone structural adhesive must possess exceptionally high tensile and shear strength, as well as resistance to repeated stretching, compression, and peeling. It also requires a high elastic modulus to maintain its basic shape under high positive and negative stresses, preventing the glass from breaking due to excessive deformation.
Below, let's compare structural adhesives based on different substrates to help you choose the right adhesive for your application.
1. Polyurethane Structural Adhesive
It can achieve very high elongation (>100%) while maintaining structural adhesive properties. It has excellent bonding properties to thermoplastics and thermosets. It cannot form a durable bond to untreated metals. It can operate at temperatures up to 120°C.
2. Epoxy Structural Adhesive
It has relatively low elongation. It has good high-temperature resistance—it remains chemically stable at 121°C or even 204°C. It has excellent chemical resistance. It bonds well to porous substrates and most materials, but the surface must be clean.
3. Anaerobic Structural Adhesive
Easy to use, requires minimal adhesive, is easy to store, and offers high compliance, making it convenient for halting production lines. It is non-flammable and non-explosive, solvent-free, and non-volatile, making it harmless to operate. It is solvent-free, low-toxic, and has minimal hazards and pollution. It has a wide range of applications, including sealing, locking, holding, bonding, and leak-proofing. It is stable and has a long shelf life.
4. Instant Adhesive
It offers fast curing, high bond strength, and is easy and convenient to use, highly versatile, and resistant to aging.
5. Acrylic Structural Adhesive
It offers fast curing and high strength, achieving initial fixation in about 5 minutes, reaching 80% strength after 30 minutes, and reaching peak strength after 24 hours. It offers excellent resistance to acids, alkalis, water, and oils, as well as high temperature and aging resistance. It has strong adhesion to metals, superior impact strength to epoxy resins, and excellent heat and cold resistance, operating within a temperature range of -30°C to 150°C.
6. Silicone Structural Adhesive
As the sole connecting component and load transferrer between the curtain wall glass and the backing aluminum alloy frame, silicone structural adhesive must possess exceptionally high tensile and shear strength, as well as resistance to repeated stretching, compression, and peeling. It also requires a high elastic modulus to maintain its basic shape under high positive and negative stresses, preventing the glass from breaking due to excessive deformation.
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