Product Description of PERMABOND® TA4820
PERMABOND® TA4820 is a 2-part, 1:1 toughened methacrylate adhesive designed for bonding thermoplastics, thermosets, metals and composites. TA4820 has excellent adhesion to as received metal surfaces, forming high strength bonds without surface preparation. It provides excellent durability and resistance to many common industrial solvents and fuels, as well as harsh environmental conditions. It cures rapidly at room temperature and its thixotropic properties allow for easy dispensing through static mixing nozzles, while maintaining good gap-filling and non-sag properties. The long fixture time allows for accurate alignment of larger components.
Features and benefits of PERMABOND® TA4820
- Adhesion to a wide variety of substrates
- Cures at room temperature
- High shear and peel strength
- Good impact strength
- Good chemical resistance
Surface Preparation
Surfaces should be clean, dry and grease-free before applying the adhesive. Permabond Cleaner A is recommended for the degreasing of most surfaces. Some metals such as aluminium, copper and its alloys will benefit from light abrasion with emery cloth (or similar), to remove the oxide layer.
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About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
Physical Properties of Uncured Adhesive
| TA4820 A | TA4820 B |
Chemical composition | Methyl methacrylate | Methyl methacrylate |
Colour | Off-white | Amber |
Mixed colour | Cream | |
Viscosity @ 25°C | 200,000-300,000 mPa.s (cP) | 120,000-200,000 mPa.s (cP) |
Specific gravity | 1.0 | 1.0 |
Typical Curing Properties
Ratio of use | 1 : 1 |
Maximum gap fill | 2 mm (0.08 in) |
Pot life (10g+10g) @23°C | 10-15 minutes |
Fixture time @23°C | 25-35 minutes |
Handling time (0.3 N/mm² shear strength is achieved) @23°C |
45-60 minutes |
Working strength @23°C | 100-120 minutes |
Full cure @23°C | 24 hours |
