What is the composition of glue?
What is glue? It is something that combines two substances. You should know that glue does not exist independently. It should be applied between two objects in order to play its role. Why can glue play such a role? This is because the bonding part is mainly realized by the tension between polymers in the glue, and water becomes the carrier of polymers. Water slowly immerses the polymer into the tissue of the object. When the water disappears, the polymer closely binds the two objects by mutual tension. I believe many people are confused. What is polymer? It is actually a component of glue, and it is a very important substance that constitutes glue. At the same time, different glues also have different components, just as the component of white glue is vinyl acetate, which is a derivative of petroleum and a round particle with a radius of 0.5 ~ 5 microns (length unit: micron, one thousandth of 65438 +0 mm).
At present, the glue components on the market are all polyvinyl alcohol, which has good water solubility and strong viscosity. This ingredient is selected for most industrial glues. Adding borax to polyvinyl alcohol, boron atoms and oxygen atoms will string polyvinyl alcohol molecules together to achieve the purpose of bonding. Of course, the common glue used in our daily life is mainly composed of water, plus some polyvinyl alcohol, white latex, urea, ethylene glycol, sucrose, essence and so on. It is not too harmful to our human body.
Different uses of different glues
Waterborne synthetic resin: mainly used for various metallic materials or some nonmetallic materials. Because of its good adhesion fastness, it is especially suitable for various buildings. Real gold foil, silver foil, imitation gold foil and other metals are all made of it. You can dry it soon after using it.
Water-based adhesive: it has good adhesive line, relatively large peeling force, good frost resistance and aging resistance, and is mainly used for various adhesive tapes, such as? BOPP？ Sealing tape, trademark, stationery tape, cloth tape, double-sided tape, etc. Because it is nontoxic, it is widely used.
Through our detailed introduction of glue in this article, I believe you have learned a lot about glue, because many users just use glue often, but they don't know why glue is sticky. In fact, the reason why glue is sticky has a lot to do with the composition of glue. In the first part, we analyzed the composition of glue in detail, so that you can understand it. Then we mentioned the different uses of different glues. You can have a look if you are interested.