摘要:
A heat-curable structural adhesive includes a non-rubber-modified epoxy resin, a reaction product of a carboxyl- or amine-terminated butadiene polymer or copolymer and a bisphenol F-based epoxy resin, a elastomeric toughener containing capped isocyanate groups, one or more epoxy curing agents a moisture scavenger and a heat activatable catalyst comprising a mixture of a solid or liquid tertiary amine compound that has a boiling temperature of at least 130° C. and a novolac resin. The structural adhesive develops excellent bonding properties when cured at moderate temperatures, especially from 120 to 170° C., and in addition performs very well in environmental aging stress testing. The adhesive is particularly good for bonding aluminum to another metal, or bonding aluminum to aluminum.
摘要:
A composition comprising: a) one or more isocyanate functional components; b) one or more compounds containing a cycloaliphatic tertiary amine: c) one or more low functional acrylate containing components having about 1 to 4 acrylate groups per molecule; d) one or more high functional acrylate containing components having 5 to about 10 acrylate groups per molecule; and e) one or more compounds containing a peroxide group; wherein the composition is a two component composition and components a) and b) are kept separate from component e) until cure is desired. The composition may be utilized as an adhesive.
摘要:
The invention relates to a two-component adhesive based on hybrid urethane-acrylate epoxies comprising a core/shell rubber demonstrating good T-peel strength. The adhesives are suitable for use in industry, e.g., as adhesives for transportation industry applications.
摘要:
An additive elastomeric manufactured part having an elongation at break of at least 50% may be made by a method comprising the following. A material comprising a prepolymer and filler is first dispensed through a nozzle to form an extrudate deposited on a base. The base, nozzle or combination thereof is moved while dispensing the material so that there is horizontal displacement between the base and nozzle in a predetermined pattern to form an initial layer of the material on the base. Subsequent layers are then formed on the initial layer by repeating the dispensing and movement on top of the initial layer and layers that follow.
摘要:
A two-component reactive dispensing system that is pliable is comprised of an outer sausage tubular member having therein an inner sausage tubular member in which the inner tubular member is bonded to the inner surface of the outer sausage tubular member longitudinally along a portion of the outer surface of the inner tubular sausage member. The compartments formed by the inner and outer tubular sausage members are filled with materials that are reactive with each other and the ends are sealed by gathering the ends and sealed using, for example wire wrap around clips.
摘要:
A composition comprising: a) one or more isocyanate functional components; b) one or more compounds containing a cycloaliphatic tertiary amine: c) one or more low functional acrylate containing components having about 1 to 4 acrylate groups per molecule; d) one or more high functional acrylate containing components having 5 to about 10 acrylate groups per molecule; and e) one or more compounds containing a peroxide group; wherein the composition is a two component composition and components a) and b) are kept separate from component e) until cure is desired. The composition may be utilized as an adhesive.
摘要:
An additive elastomeric manufactured part having an elongation at break of at least 50% may be made by a method comprising the following. A material comprising a prepolymer and filler is first dispensed through a nozzle to form an extrudate deposited on a base. The base, nozzle or combination thereof is moved while dispensing the material so that there is horizontal displacement between the base and nozzle in a predetermined pattern to form an initial layer of the material on the base. Subsequent layers are then formed on the initial layer by repeating the dispensing and movement on top of the initial layer and layers that follow.
摘要:
The invention relates to isocyanate-free elastomer adhesives based on hybrid urethane-acrylate epoxies. The hybrid shows properties consistent for structural adhesives with excellent mechanical and thermal stability, and low read-through. The adhesives are suitable for use in industry, e.g., as adhesives for automotive applications.
摘要:
Epoxy adhesive compositions contain a heat-activatable catalyst. The heat-activatable catalyst includes a tertiary amine catalyst and a novolac resin that has a weight average molecular weight of at least 3000. One-component epoxy adhesive formulations that contain the heat-activatable catalyst have unexpectedly good storage stability.