Common problems and solutions in dispensing process of RTV waterproof sealant

RTV waterproof sealing dispensing processing is a room temperature vulcanized silicone rubber. RTV is the abbreviation of room temperature vulcanized silicone rubber, which can be vulcanized at room temperature. Now let's talk with Xiao Bian about some common problems encountered in RTV silicone FIP dispensing processing and their solutions.
Wrinkle on the surface of silica gel after curing
This is caused by the shortening of RTV silicone waterproof sealing dispensing after processing and curing. Most of the problems are caused by the addition of solvent silicone resin to the adhesive, which is caused by the quality of RTV silicone itself.

Silica gel presents interface layer
This problem is also caused by the quality of FIP dispensing. Any two different raw materials will present an interface. The only way to deal with it is to use the principle of similar materials. Many friends have proposed to increase the curing temperature, or perhaps conduct sintering at high temperature. These are all lies. The only way to deal with them is to start from the data. When no other raw materials can be changed, Change the affinity of silica gel.

Fluorescent powder seizure precipitation

If it is not the problem of powder, the glue in this situation can only be room temperature curing type. In order to maintain its light transmittance, refractive index, etc. in RTV silica gel, no suspension agent can be added. Those who encounter these problems can try to change to temperature curing products to deal with this problem.
The surface of silicone cured is not lubricated enough

This is because RTV silica gel is poisoned by sulfur and phosphorus. We can solve this problem by cleaning the mold properly.