What are the technical properties of adhesives?

The technical properties of adhesives are:

(1) Manufacturability

It refers to the performance of the adhesive in terms of bonding operation, including the modulation, gluing, drying, and curing conditions of the adhesive, which is also an evaluation of the difficulty of bonding operation. As previously stated, multi-component adhesive to be deployed on-site, chemical reaction type adhesive curing reaction temperature condition requirements, solvent type adhesive after glue need to air for a period of time, until the solvent volatilized to bond and so on, these problems in the selection of adhesive must be clear, in order to ensure the bond effect.

(2) Bond strength

It is the performance index to ensure the bond firmness. If the bonding strength is not enough, it will make the adhesive fall off. If the wall is decorated, the adhesive will fall down, which not only affects the decoration quality, but sometimes causes injury accidents.

(3) Stability

Refers to the degree of strength change of the adhesive specimen after dipping in the specified medium at a certain temperature for a period of time. Such as water resistance, oil resistance, etc. Commonly measured strength or strength retention rate. For the adhesive to bond the surface material of the ground, external wall or bathroom, toilet and so on, it should have good stability.

(4) Durability (or aging resistance)

Adhesive layer with the growth of use time, its performance will gradually aging, until the loss of bonding strength, this property is called durability. Because now the largest amount of adhesive is synthetic resin or synthetic rubber based organic polymer materials, in the process of use is easy to aging deterioration, so that the bonding layer lost effectiveness and fall off.

(5) Temperature resistance

Temperature resistance refers to the change of the performance of the adhesive in the specified temperature range. Including heat resistance (under high temperature environment conditions), cold resistance (under low temperature environment conditions) and resistance to high and low temperature variation. These temperature changes will also change the composition of the adhesive, thus reducing the bonding strength until the adhesive layer falls off.

(6) Weather resistance

For the adhesive exposed to the outdoors, it can withstand the weather, such as rain, sunshine, snow and water and humidity, called weatherability. The weatherability also reflects the aging resistance of the adhesive layer under the long-term action of natural conditions. It is also because of these natural factors will lead to the deterioration of adhesive layer properties, affecting the bonding strength.

(7) Chemical resistance

Most synthetic resin adhesives and some natural resin adhesives, under the action of chemical media will dissolve, expansion, aging or corrosion and other different changes, resulting in a decline in bonding strength.

(8) Other performance

In addition to the above introduced several properties (that is, a variety of environmental conditions, such as temperature, humidity, sunlight, chemical media, etc., on the adhesive bonding strength of the adhesive layer, a comprehensive reflection of the use of the adhesive layer) must be considered in the selection of adhesives, but also should consider other properties of the adhesive, such as: There is no irritating odor, no toxicity, adhesive color, storage stability, storage time and price.