How many types of RTV silicone rubber glue are there? What are the characteristics of RTV silicone glue?

At present, there are many uses of RTV silicone rubber, which can well realize the bonding and waterproof sealing of electronic products. RTV silicone glue now has two types: condensation type and addition type.

The basic adhesive of addition molding RTV silicone rubber glue is linear polysiloxane with vinyl, which forms an elastic adhesive layer after corresponding reaction after sizing with three-axis automatic dispensing machine; The condensed RTV silicone rubber glue is the reaction between the silicon hydroxyl group and the active substance, forming an elastic adhesive layer; The purpose of RTV silicone glue, whether additive or condensed, is to realize the waterproof, sealing, bonding and fixation of electronic products.

So what are the characteristics of condensation type and addition type RTV silicone glue? The addition molded rtv silicone rubber glue has good hydrophobicity and heat resistance. because it has active end groups, it has good physical properties such as resistance to tension, elongation and tear, so it makes electronic products have a certain degree of seismic resistance.

The condensed RTV organic silica gel glue has good electrical insulation, moisture resistance and other properties. It almost does not release harmful substances during the curing process. It is an environment-friendly glue. What are the characteristics of RTV silicone rubber? No matter what type of RTV silicone rubber is, it has good high and low temperature resistance. It can also have good waterproof, sealing, insulation, bonding and other properties in a low temperature environment of minus 100 ℃ to a high temperature environment of 350 ℃. Moreover, RTV organic silica gel glue is also resistant to radiation, oil and some organic solvents, which can protect components from the impact of the external environment and normal operation.