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Three factors that affect the curing of SUPER GLUE

Three factors that affect the curing of SUPER GLUE

(Summary description)The curing temperature is one of the important parameters of SUPER GLUE curing. If the curing temperature is too high, it will easily cause the loss of glue or embrittlement of the glue layer, resulting in a decrease in the bonding strength.

Three factors that affect the curing of SUPER GLUE

(Summary description)The curing temperature is one of the important parameters of SUPER GLUE curing. If the curing temperature is too high, it will easily cause the loss of glue or embrittlement of the glue layer, resulting in a decrease in the bonding strength.

Information

1. Curing temperature

The curing temperature is one of the important parameters of SUPER GLUE curing. If the curing temperature is too high, it will easily cause the loss of glue or embrittlement of the glue layer, resulting in a decrease in the bonding strength. If the curing temperature is too low, the molecular chain of the matrix will move. If it is difficult, the crosslinking density of the adhesive layer will be too low, and the curing reaction cannot be completed. Therefore, during the curing process, the curing temperature must be strictly controlled. Each SUPER GLUE has a specific curing temperature.

SUPER GLUE

2. Curing pressure
The curing pressure refers to the application of a certain pressure during the curing process, which is conducive to the good bonding between the adhesive layer and the adherend and ensures the quality. Due to the different types of adhesives, the applied pressure is also different. Generally, it is divided into the following three situations: the contact pressure is It is cured by the pressure generated by the weight of the adherend without additional pressure, such as epoxy resin glue, a-cyanoacrylate glue, second generation acrylate glue, unsaturated polyester glue and polyurethane glue, etc. . 0.1~0.3MPa pressure is suitable for solvent-based adhesives, such as phenolic-acetal, phenolic-nitrile, epoxy-nitrile, epoxy-nylon and polyimide. The pressure of 0.3~0.5MPa is suitable for all kinds of SUPER GLUE in film, powder, tube and granular form, as well as hot melt adhesive. The purpose of increasing the pressure is to improve its wettability.

3. Curing time
The curing time refers to the time required for curing in the bonding process under certain temperature and pressure conditions. Different SUPER GLUEs have different curing times. Curing in a few hours, such as room temperature fast curing epoxy glue, second-generation acrylate glue, and curing for several days, such as epoxy polyamide glue, etc. The curing time is also affected by the curing temperature and pressure. Increasing the curing temperature can shorten the curing time. Under the condition of lower curing temperature, the curing time will be greatly prolonged. If it is lower than room temperature, it will not cure for several days.

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