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Various Types of Adhesives Typical Mechanical Performance

Strength and Mechanics of Materials
Materials Chemicals and Adhesives

Typical Mechanical Performance of Various Types of Adhesives and their

By strict definition, an adhesive is any substance that fastens or bonds materials to be joined (adherends) by means of surface attachment. The bond durability depends on the strength of the adhesive to the substrate (adhesion) and the strength within the adhesive (cohesion). Besides bonding a joint, an adhesive may serve as a seal against foreign matter. When an adhesive performs both bonding and sealing functions, it is usually referred to as an adhesive sealant. Joining materials with adhesives offers significant benefits compared with mechanical methods of uniting two materials.

Adhesive Chemistry or Type	Room Temperature Lap-Shear Strength		Pel Strength Per Unit Width
	MPa	psi	kN/m	lb/in
Pressure-sensitive	0.01 - 0.07	2 - 10	0.18 - 0.88	1 - 5
Starch-based	0.07 - 0.7	10 - 100	0.18 - 0.88	1 - 5
Cellosics	0.35 - 3.5	50 - 500	0.18 - 1.8	1 - 10
Rubber-based	0.35 - 3.5	50 - 500	1.8 - 7	10 - 40
Formulated hot melt	0.35 - 4.8	50 - 700	0.88 - 3.5	5 - 20
Synthetically designed hot melt	0.7 - 6.9	100 - 1,000	0.88 - 3.5	5 - 20
PVAc emulsion (white glue)	1.4 - 6.9	200 - 1,000	0.88 - 1.8	5 - 10
Cyanoacrylate	6.9 - 13.8	1,000 - 2,000	0.18 - 3.5	1 - 20
Protein-based	6.9 - 13.8	1,000 - 2,000	0.18 - 1.8	1 - 10
Anaerobic acrylic	6.9 - 13.8	1,000 - 2,000	0.18 - 1.8	1 - 10
Urethane	6.9 - 17.2	1,000 - 2,500	1.8 - 8.8	10 - 50
Rubber-modified acrylic	13.8 - 24.1	2,000 - 3,500	1.8 - 8.8	10 - 50
Modified phenolic	13.8 - 27.6	2,000 - 4,000	3.6 - 7	20 - 40
Unmodified epoxy	10.3 - 27.6	1,500 - 4,000	0.35 - 1.8	2 - 10
Bis-maleimide	13.8 - 27.6	2,000 - 4,000	1.8 - 3.5	1 - 20
Polyimide	13.8 - 27.6	2,000 - 4,000	0.18 - 0.88	1 - 5
Rubber-modified epoxt	20.7 - 41.4	3,000 - 6,000	4.4 - 14	25 - 80

Source:

• Budynas, Richard G., and J. Keith Nisbett, Shigley's Mechanical Engineering Design, 8th ed., New York: McGraw-Hill, 2008.

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