The main industry challenges focus around being able to handle and dispense the sealant effectively and to subsequently cure rapidly at a time of choosing. Cost is another challenge in that unlike adhesives, sealants are most often used in much larger quantities and volumes. There is a perception that sealants are inferior to adhesives due to their often lower hardness and internal strength but this must be assessed against the very different property of being able to seal and act as a barrier rather than taking load.
TWI is unique in bringing together expertise, understanding of the adhesion process, analytical equipment, diffusion characteristics testing and measurement of other distinct properties such as thermal conductivity.
A recent project has seen TWI working with an aerospace client on identifying cure-on-demand sealants and also the ability to automate dispensing of other paste systems where stringing, access, cost and time are issues. TWI developed a number of attractive options to consider in more detail.
For more information, please contact us.