General Comments on Adhesive Bonding of Thermoplastics

Structural adhesives for plastics are more often than not epoxies, two-part acrylics, cyanoacrylates or UV-cure adhesives. 

There are hundreds of different epoxy grades available and, whilst many of these are far more suited for bonding metals than thermoplastics, epoxies are used for some 

All shear strengths are given as guidelines only and may vary considerably depending on grade of plastic, fillers, surface finish, etc. 

Two-part acrylics (or MMA) bond exceptionally well to many thermoplastics and these products are often used for the assembly of point-of-sale plastic assemblies where ease of application, strength and aesthetics are important. 

Cyanoacrylates are typically suitable for temperatures up to 100 C, although some speciality cyanoacrylates are available for higher operating temperatures. One of the major benefits of cyanoacrylates is that they can be used (with a primer) to bond the non-polar plastics. More details about these primers are given in Section 6.2 

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