The reason for the poor hot bonding of silicone rubber and metal
We all know that silicone rubber glue can be combined with a lot of materials, including silicone rubber bonded to metal, silicone rubber bonded to ceramics, silicone rubber bonded to silicone rubber, etc., with silicone rubber glue bonding has a very good firm effect, so why the hot bonding of silicone rubber and metal will not be firm phenomenon?
Below concord small make up to tell you the reason for the hot bonding of silicon and metal is what.
In the process of hot bonding of silicone rubber and metal, there will be the phenomenon of poor bonding, the main reasons are as follows:
First, before the bonding treatment is not done, the metal surface stains are not treated clean, through the use of toluene or methyl ketone cleaning, decontamination effect is better.
Second, during the bonding process, the silicone rubber is not evenly applied or repeatedly brushed, which has a definite effect on the bonding effect. Just evenly brush the glue on the surface to be done 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 use room temperature drying and heating drying two ways, room temperature drying generally takes a long time, production needs to be put into the operation in advance, according to the nature of the product, different drying time.
The method of baking is more consistent with most of the products, heating can make the water in the glue volatilize more quickly, and can make the adhesive keep the temperature, improve the molecular activity of the treated metal surface, can play a very good bonding effect.
Four, silicone rubber and metal together into the mold for molding, to ensure the correct way of operation, otherwise there will be adhesive failure.
1. During the bonding process of silicone rubber and metal, try to avoid placing in dusty places during the drying process after applying glue;
2. During the bonding process of silicone rubber and metal, avoid direct contact between the hand and the metal surface to be bonded, because sweat on the hand has a great impact on the bonding effect;
3. During the bonding process of silicone and metal, it is best to use leather gloves or finger covers for operation.
The above is the cause of the unstable hot bonding between silicone rubber and metal. I hope that it can help you.
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