Hot melt adhesive or glass adhesive, which glue sticks better? Talk about their differences and uses.

1, hot melt adhesive is more viscous than glass adhesive. ?

2. Hot melt adhesive is widely used, suitable for bonding various materials, mainly used in industrial grade.

3. Glass glue generally has the function of bonding and caulking. It is used to: fill the glass gap on the wooden door; Fill the gap between the basin and the desktop; Fill the gap between the bathtub and the wall; Gap filling between some metal objects and other materials; The joint between the floor tile and the floor.

4. Hot melt adhesive is short for hot melt adhesive. It is non-toxic, tasteless and does not pollute the environment. It is called "green adhesive" and is especially suitable for continuous production lines. Widely used, suitable for bonding various materials.

5. Glass glue is a kind of adhesive commonly used in families, which consists of sodium silicate, acetic acid and silicone. Sodium silicate is soluble in water and sticky. It is called sodium silicate in the south and sodium silicate in the north.

Extended data:

1. Adhesive is a substance with good adhesion. Through adhesion and cohesion, objects are connected by surface adhesion.

2. People regard the adsorption of solid on adhesive as the main reason of adhesion, which is called the adsorption theory of adhesion. Theoretically, the main source of adhesive force is the molecular force of adhesive system, namely van der Waals attraction and hydrogen bond force. When the distance between the adhesive and the molecule of the adherend reaches10-5 & ARING; At the same time, the interfacial molecules attract each other, further shortening the distance between molecules and reaching the maximum stable state everywhere.

3. According to the calculation, due to van der Waals force, when the distance between two ideal planes is10 & ARING; The gravitational intensity between them can reach10-1000 MPa; When the distance is 3-4 & ARING; , up to 100- 1000MPa. This value far exceeds the strength that the best structural adhesive in modern times can achieve.

Therefore, some people think that as long as the two objects are in good contact, that is, the adhesive fully wets the bonding interface, the calculated value assumes that the two ideal planes are in close contact and the interaction between each pair of molecules on the interface layer is destroyed at the same time, so the interaction between each pair of molecules cannot be guaranteed to occur at the same time.

4. The polarity of the adhesive is too high, which sometimes seriously hinders the wetting process and reduces the adhesion. Intermolecular force is the factor that provides adhesion, but it is not the only factor. In some special cases, other factors will also play a leading role.

References:

Baidu Encyclopedia: Adhesive