Acrylic Adhesive Applications
Acrylic adhesives are renowned for their excellent overall performance, especially in industrial applications requiring high strength, aging resistance, and rapid curing.
Key Features
High Strength and Toughness: After curing, they form a strong and tough adhesive layer, with particularly excellent impact and peel resistance.
Rapid Curing: Second-generation acrylates (SGA) and UV-cured acrylates can reach usable strength within seconds to minutes.
Environmental Resistance:Weather resistance, UV resistance, water resistance, heat resistance (typically -40℃ to 120℃), and chemical resistance are generally superior to epoxy resins and polyurethanes.
Wide Applicability: They have good adhesion to various metals, plastics, and composite materials, and can even bond materials with slightly oily surfaces (such as SGA).
Adjustability: Through formulation design, products in different forms (liquid, paste, film) and with different properties (rigid, flexible) can be produced.
Main Classifications
1. Reactive Acrylic Adhesives
First-generation acrylic adhesives (FGA): Requires mixing, cures slowly, and is now rarely used.
Second-generation acrylic adhesives (SGA - commonly known as "AB glue" or "blue and red glue")
Characteristics: Non-mixing type, primer type (base agent + primer) or dual-base agent type. The biggest advantage is its ability to bond to oily surfaces, and its fast curing speed (initial cure in minutes).
Typical Applications:
Structural bonding: Metal/plastic parts for automobiles and motorcycles (such as rearview mirrors, spoilers), speaker magnetic circuits, elevator cars, rail transit interiors, etc.
Repair and assembly: Widely used in mechanical repair, equipment installation, and other on-site operations.
2. Ultraviolet (UV) Curing Acrylic Adhesives
Characteristics: Instantly cures within seconds under specific wavelength ultraviolet light irradiation, environmentally friendly and efficient, enabling automated precision coating.
Typical Applications:
Electronics Industry: Mobile phone/tablet display bonding (OCA optical adhesive), touchscreen assembly, camera lens mounting, PCB component encapsulation.
Medical Devices: Assembly of disposable medical devices (such as syringes and catheters).
Glass Furniture and Crafts: Glass lamination bonding.
Fiber Optic Communication: Fiber optic coating bonding and connector protection.
3. Acrylic Pressure-Sensitive Adhesive (PSA)
Features: Permanent adhesion; bonds under pressure without curing.
Forms: Commonly coated onto substrates (such as films, foam, and non-woven fabrics) to form tapes, labels, and protective films.
Typical Applications:
Industrial Tapes: Double-sided foam tape (for automotive emblems and mobile phone structural component bonding), high-temperature masking tape (for spray coating masking), VHB strong double-sided tape (for building curtain walls and elevator decorative panels).
Labels and Protective Films: Product labels, electronic product surface protective films, packaging sealing tapes.
Medical Adhesives: Band-Aids, Plasters, Transdermal Drug Delivery Patches.
4. Acrylic Structural Adhesives (Anaerobic Adhesives)
Features: Cures under anaerobic conditions (between metal surfaces) and catalyzed by metal ions; single-component, easy to use.
Typical Applications:
Thread Locking: Preventing loosening of screws and bolts.
Flat-Surface Sealing: Leak-proof sealing of flanges and end caps.
Cylindrical Part Holding: Fixing bearings, bushings, and gears.
5. Acrylic Films
Features: Pre-formed as a dry film, cured by heating and pressurization; suitable for automated bonding of large areas and complex shapes.
Typical Applications:
Aerospace: Bonding of composite honeycomb sandwich structures (core application).
Automotive Industry: Bonding of body panels and interior parts.
Electronics: Bonding of flexible printed circuit boards (FPC) to rigid boards.
Main Application Areas:
Transportation: Automotive, rail transportation, aerospace (lightweight material bonding, structural reinforcement, interior assembly).
Electronics and Appliances: Smartphones, tablets, monitors, home appliances, LED lighting (precision assembly, optical bonding, encapsulation and protection).
New Energy: Wind turbine blade molding, bonding and repair; solar panel sealing; power battery pack structural bonding.
Industrial Manufacturing and Repair: Machinery and equipment; metal processing; assembly and repair of models and molds.
Construction and Building Materials: Curtain wall installation; bonding of interior decoration materials; assembly of glass products.
Medical and Healthcare: Assembly of low-irritant medical devices and transdermal drug delivery systems.
Everyday Life: Ubiquitous tapes, labels, stickers, handicrafts, etc.
Acrylic adhesives, due to their good performance balance, strong designability, and adaptability to the needs of modern high-efficiency production, have become an indispensable key material from high-end manufacturing to daily life. When selecting an adhesive, the type should be determined based on the materials being bonded, the working conditions (strength, speed, durability), and the application process.
For inquiries, please contact our sales team.
Our professional technicians will provide sample testing based on your needs.
We offer one-on-one process guidance and problem-solving throughout the sales process.
For any after-sales issues or needs, please contact our professional technicians.
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