Adhesives For Automotive Displays

Epoxy compounds are used for automotive displaysApplication specific Master Bond liquid adhesive formulations have been developed to meet the growing demand for advanced automotive display systems.

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Toughened, Non-Drip Epoxy Meets NASA Low Outgassing Specifications

Master Bond EP40ND is a two component epoxy system, designed for bonding, sealing and coating applications. It is a non-drip, toughened system with an easy to use 1:1 mix ratio by weight or volume. EP40ND meets NASA low outgassing specifications and has a high elongation of 80-90% at 75°F. It adheres well to many plastics, such as polycarbonates and acrylics, making it appropriate for applications that use substrates prone to stress cracking.

This flexible system provides a low tensile modulus of 1,000-1,500 psi, and a relatively high lap shear strength of 1,600-1,800 psi. EP40ND has a Shore D Hardness measuring between 50-60 at 75°F. Serviceable from -100°F to +250°F, this electrically insulative compound can withstand rigorous thermal cycling, vibration, impact and shock.

EP40ND cures within 2-3 days at room temperature, or faster with the addition of heat. The viscosity of Part A is 50,000-100,000 cps, Part B is a thixotropic paste. It has a long working life after mixing. In addition to plastics, this epoxy adheres well to a variety of dissimilar substrates such as metals, composites, glass, and ceramics. EP40ND can be used in aerospace, semiconductor, electronic, opto-electronic and medical device industries. It is available in standard packaging, as well as premixed and frozen syringes. It is also available in double barrel cartridges for use with a gun dispenser.

Adhesives For Electric Vehicle Battery Assembly

Adhesive, sealant and coating compounds for electric vehicle batteriesMaster Bond is a supplier of technologically advanced structural adhesives, sealants, coatings, thermal management materials, vacuum impregnation compounds, and conductive coatings that can be utilized for new lithiu

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Toughened One Part Epoxy Withstands Thermal Cycling

Master Bond EP17TF is a one part epoxy with a paste consistency, that can be readily dispensed evenly and uniformly. It has a moderately high glass transition temperature (Tg) of 150-155°C and a wide service temperature range from -150°F to +550°F. Designed to compensate for thermal mismatches, this compound resists impact, vibration, shock and rigorous thermal cycling.

EP17TF is a reliable electrical insulator, possessing a volume resistivity greater than 1015 ohm-cm and a dielectric constant of 4.5 at 60 Hz at room temperature. It maintains its electrical insulation properties, even at higher temperatures. The system has good toughness with an elongation of 5-10%. EP17TF exhibits superior strength properties, bonding well to similar and dissimilar substrates such as metal, ceramics, plastics and composites. It offers a high lap shear strength of 3,200-3,400 psi, a tensile strength of 8,000-9,000 psi and a tensile modulus of 350,000-400,000 psi at 75°F.

EP17TF requires an elevated temperature cure of 300°F for 5-6 hours, followed by a post cure at 350°F for 4-5 hours. The additional post cure is recommended to achieve optimal strength, chemical resistance and thermal properties. EP17TF withstands many chemicals, including acids, bases, fuels, oils and many solvents. It is available in standard packaging from ½ pint containers up to 5 gallon pails. Containers should be refrigerated to extend shelf life.

Biocompatible UV Curable Adhesive Formulated for TPU Bonding

Master Bond UV17Med is a one part, no mix, UV curable system. It was specially formulated to provide excellent adhesion to many TPUs (thermoplastic polyurethanes), which are widely recognized as challenging substrates for bonding. This compound provides very good toughness with a high elongation of 50-60%. UV17Med passes stringent ISO10993-5 cytotoxicity standards.

UV17Med cures in 10-30 seconds when exposed to a UV light source emitting at a wavelength of 320-365 nm with an energy output of 20-40 milliwatts/cm2. It is recommended that one of the surfaces to be bonded is transparent, without UV blocking agents, so as to allow the light to penetrate the substrate’s surface with no shadows. This flowable system features a low viscosity of 500-3,000 cps, a tensile modulus measuring between 30,000-50,000 psi, and a service temperature range from -80°F to 250°F.

This non-cytotoxic system is formulated for demanding applications in the medical industry, and is capable of withstanding many chemicals including liquid sterilants, antimicrobial agents, Ethylene Oxide (EtO), e-beam, and gamma radiation. In addition to TPUs, UV17Med bonds well to metals, glass, ceramics and many plastics. It is available in a wide range of packaging options, including ½ pint, pint, quart, gallon and 5 gallon containers. It can also be purchased in convenient syringe applicators for automated dispensing.

Flowable Silicone Offers Thermal Cycling and Shock Resistance

Master Bond MasterSil 323 is a two component, addition cured system for bonding, sealing and potting applications. This product has a convenient to use 1:1 mix ratio, and can be packaged in double barrel cartridges for dispensing from a gun applicator. It can be applied in thin and thick sections. This silicone has excellent flexibility, with an elongation of 150-250% at room temperature, a Shore A hardness of 35-45 and a low tensile modulus of 100-175 psi at 75°F for stress relief. It is capable of withstanding rigorous thermal cycling and shock without cracking or exerting stress on components. Additionally, MasterSil 323 has a low dielectric constant of 2.8 at 75°F, 1 MHz.

“MasterSil 323 is a specialty compound which not only offers strain relief upon cure, but also provides decent bond strength to a variety of substrates, especially considering that it is a silicone,” says Senior Product Engineer Rohit Ramnath. “The lap shear strength for an aluminum to aluminum bond joint is around 200-250 psi at 75°F. Moreover, MasterSil 323 is optically clear in thinner sections and has a refractive index of 1.44 at 589 nm. It has a wide service temperature range of -65°F to 400°F.”

The optimal cure schedule for MasterSil 323 is overnight at room temperature followed by 2-4 hours at 135-165°F. The material will fully cure without exposure to air or humidity. The working life of a mixed 100 gram batch is approximately 2-3 hours. It also has extremely low shrinkage upon curing. MasterSil 323 is available for use in ½ pint, pint, quart, gallon kit containers, 30 cc syringe kits, and 50 cc double barrel cartridges for gun dispensers. Shelf life in original, unopened containers at 75°F is 6 months.

Low Viscosity, Electrically Conductive Epoxy Meets ISO 10993-5 Cytotoxicity Standards

Master Bond EP4G-80Med is a one part epoxy designed for use in the assembly of medical devices. This system is formulated with a non-metallic, graphite filler, which leads to good thermal and electrical conductivity. It possesses a thermal conductivity of 1.44-1.73 W/(m•K) and a volume resistivity of 50-100 ohm-cm. Furthermore, it complies with the ISO 10993-5 guidelines and is considered to be non-cytotoxic.

EP4G-80Med bonds well to a variety of substrates including metals, glass, ceramics, rubbers and many plastics. It is very effective as an EMI/RFI shielding compound and can also be used for static dissipation purposes. This system does not need high heat to cure; it cures readily in 60-90 minutes at 80°C. Post curing for 1-2 hours at 80°C is commonly recommended as it will optimize the overall properties of the epoxy. Its curing profile makes it suitable for many applications involving heat sensitive substrates. “The product’s unique feature is that despite incorporating a graphite based filler material it actually exhibits an excellent flow profile, especially for an electrically conductive system, with a viscosity of 4,000-10,000 cps. It also provides a low coefficient of thermal expansion of around 15-20 ppm/C at room temperature”, says Rohit Ramnath, Senior Product Engineer.

EP4G-80Med is a dimensionally stable epoxy that offers a tensile strength of 2,000-3,000 psi, a tensile modulus exceeding 750,000 psi and a Shore D hardness of 75-85 at 75°F. This system has a high glass transition temperature of 130-140°C and is serviceable over the temperature range of -50°C to +175°C. It can withstand exposure to water, antimicrobial agents and many chemical sterilants. EP4G-80Med has a relatively long working life of 8-12 hours and must be refrigerated or frozen for storage. This black in color product is packaged in 10cc and 30 cc syringes, which are shipped in dry ice. After thawing it is easy to apply. EP4G-80Med does not contain any solvents and is RoHS compliant.

Adhesives for Advanced Driver Assistance Systems (ADAS)

Adhesive, sealant and coating compounds for Advanced Driver Assistance SystemsThese electronic systems are crucial in improving driver safety. They also aid in backing up and parking.

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Thermally Conductive Epoxy Features Chemical and High Temperature Resistance

Master Bond EP35AOLV is a two part heat cured epoxy system, designed for bonding, sealing, coating and potting applications. It is a thermally conductive, electrically insulating compound that withstands aggressive chemicals, such as those found in downhole oil and gas processing. EP35AOLV exhibits superior protection against corrosion in various harsh environments and helps prolong longevity of critical equipment. With a service range that extends from -60°F to 500°F (52°C to 260°C) and a glass transition temperature of around 165-170°C, it is resistant to high temperatures.

The thermal conductivity value for EP35AOLV is 7-8 BTU•in/(ft2 •hr•°F) [1-1.15 W/(m•K)], and its compressive strength measures 24,000-26,000 psi. It is a filled system that has good dimensional stability and low shrinkage upon curing. “EP35AOLV has been designed not only to handle aggressive chemicals, but also to resist high temperature and high pressure environments. Additionally, it has an extremely high tensile modulus of more than 1,000,000 psi at 75°F”, says Rohit Ramnath, Senior Product Engineer.

The ideal cure schedule is 2 to 3 hours at 300°F, followed by 3 to 4 hours at 300-350°F. EP35AOLV has a forgiving 100 to 50 mix ratio by weight, and is flowable, with a mixed viscosity of 50,000-90,000 cps. It adheres well to a wide variety of substrates such as metals, composites, glass, and high temperature plastics such as PEEK. EP35AOLV is available in standard packaging from ounce kits to gallon kits.

Adhesive Solutions for Electronic Manufacturing Services Market

Epoxy compounds for the electronic manufacturing services marketLeading electronic manufacturing services (EMS) companies depend on Master Bond custom adhesive systems for the assembly of electronic products for original equipment manufacturers (OEMs).

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