How To Judge The Quality Of Hot Melt Adhesive?

How To Judge The Quality Of Hot Melt Adhesive?

Hot melt adhesive is a highly plastic adhesive that can be bonded to a variety of substances and can change its properties with changes in temperature. After curing, it has strong adhesion and bonding strength, so many industries will use this adhesive. If this adhesive is used for ordinary household use, the quality is not important. If it is used in the industrial field, it is necessary to pay attention to the quality. So how to judge the quality of hot melt adhesive?

• 1. The composition of hot melt adhesive can be tested and analyzed under professional instruments, so that accurate data can be obtained.
• 2. You can also observe the appearance. If the hot melt adhesive is inconsistent and the workmanship is rough, then the quality is worrying.
• 3. The tensile strength can be tested after the hot melt adhesive is melted. The hot melt adhesive with poor tensile strength is unqualified.
• 4. After the hot melt adhesive is melted, observe whether there is powdery substance. If there is powdery substance, it means that there are too many fillers and poor bonding performance.
• 5. Good quality hot melt adhesive has temperature resistance. The hot melt adhesive can be tested in an environment of zero degrees or above 40 degrees. If there is brittle cracking or softening, it means that the adhesive quality is not good.
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Although some hot melt adhesives will emit some odor during operation, it will completely disappear after curing, so such hot melt adhesives are still safe and can be used for bonding electrical components.