Master Bond X18Med is a specially formulated one component system for bonding and priming polyolefinic surfaces. X18Med is a low viscosity (<2,500) solvent based system that is easy to apply and process. Most often, it is used as a primer to promote adhesion of polyolefinic substrates to other kinds of materials, such as metals, ceramics, composites and other kinds of plastics. When employed as a primer, X18Med is applied in a very thin layer on to the polyolefinic piece and the solvent allowed to evaporate. This will occur typically in 2-4 hours and can be greatly accelerated by adding heat (15-30 minutes at 150-200°F). After the surface is primed in this manner, an epoxy or silicone is prepared and applied to the substrates, and then allowed to cure. When used in this fashion, X18Med is, in essence, a bonding promoter, allowing adhesion to this low energy type of plastic (polyolefin) with a process that is relatively simple and straightforward.
X18Med can also be used as an adhesive for bonding one polyolefin to another one. When used in this manner, a thin layer of X18Med is applied to each surface. The surfaces are then mated and the solvent is allowed to evaporate. When cured at room temperature, it will generally set up in 30-45 minutes with full cures in 12-24 hours. If cured at 150°F the curing time will be 1-2 hours. When being used as an adhesive, the maximum area of effectiveness for X18Med is about 1 square inch. When used as a primer, there is no limitation in the size of the pieces. Polyolefins are widely used in medical devices. Using X18Med as a primer offers many advantages in handling and processing when compared to other methods of treating polyolefinic materials to allow for good adhesion.
Product Advantages
- Low viscosity, easy to apply
- Can be used as an adhesive, primer or adhesion promoter
- Surfaces primed with X18Med are compatible with a wide variety of adhesives
- Easier to use than other methods of pretreating polyolefins
- Passes ISO 10993-5 for medical devices
