What is the principle of self-adhesive?
Not only in life, but in all walks of life, especially in manufacturing, people often experience this: Open a package, take out a product, and you often see a label on it - that's what we're talking about today, which is widely used around the world.
Self-adhesive, as its name suggests, is not significantly moist or greasy on the surface, but has good adhesion. So, this kind of surface is both dry and can adhere to the strange phenomenon is produced? Next, let's unveil the science behind the self-adhesive together.
First of all, we need to understand that self-adhesive is not a special substance, but a gluing process that covers many different types of tape, applied in different ways to the surface of an object. The principle of self-adhesive action mainly comes from its back adhesive, this adhesive is a special polymer, can be attached to a variety of surfaces under certain temperature and pressure.
The principle of this adhesive is primarily based on physical and chemical action. The physical effect is mainly shown in two aspects: one is due to the irregularity of the material surface, the adhesive can fill these holes and cracks, so that the tape and the surface are in close contact, and the other is due to the natural entanglement of the polymer. The chemical action is shown on the principle of similarity, i.e., "similar poly, different substances", the higher the similarity of materials, the easier to bond.
This process of forming polar molecular chains and producing adhesion is a chemical reaction process. This process is called crosslinking reaction, the result is the formation of a three-dimensional network structure, the stability of this structure, decided the adhesive properties and durability.
However, the viscosity of self-adhesive is not the higher the better. Viscosity too high self-adhesive, will cause peeling difficulty, and may cause damage to the surface of the object. Therefore, the viscosity of the adhesive must be moderate, and should be selected and adjusted according to the needs of the application scenario.
In addition to the adhesion principle, there is an important component in the adhesive, that is, the filler. These fillers can change some of the physical properties of self-adhesive, such as hardness, flexibility and so on, so that it can better obey and conform to the surface shape.
Anyway,adhesive stickerBecause of the development of modern adhesive technology, also benefit from the in-depth understanding of the force between the surface of material. And the extensive application of self-adhesive, but also to the development of human science and technology a praise. Hopefully through this article, you can have a deeper understanding of the working principle of self-adhesive, and a deeper understanding, will lead you to a deeper scientific exploration road.
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