The reason why silicone gel and metal are not bonded well

We all know that silica gel glue can be combined with a lot of substances, including silica gel adhesion metal, silica gel adhesion ceramics, silica gel adhesion silica gel and so on, bonding with silica gel glue has a very good solid effect, so why does the hot bonding of silica gel and metal appear weak phenomenon?

Below the small series to tell you the reason why silicone and metal hot bonding is not strong.

In the process of hot bonding between silica gel and metal, there will be the phenomenon of poor bonding, the main reasons are as follows:

1. The pre-bonding treatment is not in place, and the metal surface stains are not cleaned. Toluene or ketone can be used for cleaning, and the decontamination effect is better.

Second, in the bonding process, silica gel did not daub evenly or repeated brush coating, which has a certain impact on the bonding effect, just evenly brush the glue once on the surface to be bonded, or soak the parts in the glue, or spray the glue evenly on the metal surface to be bonded.

Three, drying treatment is not in place: this is very critical, can be used at room temperature drying and heating drying two ways, normal room temperature drying time is relatively long, production needs to be put into operation in advance, according to the nature of the product, the drying time is different.

The method of baking is more suitable for most products. Heating can make the water inside the glue evaporate out faster, and can keep the temperature of the adhesive parts, improve the molecular activity of the treated metal surface, which can play a very good bonding effect.

Iv. When putting silica gel and metal into the mold for molding, ensure the correct operation mode, otherwise, there will be the phenomenon of poor adhesion.

Notes:

1. During the bonding process between silica gel and metal, try to avoid putting it in a dusty place after applying the glue and airing it;

2. During the bonding process between silicone and metal, try to avoid direct contact between the hand and the metal surface to be bonded, because the sweat on the hand has a great impact on the bonding effect;

3. During the bonding of silicone and metal, it is recommended to operate with leather gloves or finger gloves.

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