In the production process, it is found that the silicone product is brittle and very easy to break, which seriously affects the production, and the brittle silicone product does not meet the requirements in terms of service life. So, what are the reasons for the brittleness of silicone products?

One. The structure or mold design of the silicone product causes the product to be easily broken.
Unreasonable product structure or mold design, resulting in easy fracture of silicone products when forming.
Solution: Modify the structure of the product or mold to achieve improvement, for example: slightly thicker the area too thin, slightly rounded corners at right angles, and so on.

Second. If the molding temperature is too high or the vulcanization time is too long, the silicone product becomes brittle.
Solution: Reduce the temperature and control the curing time.

three. The secondary vulcanization is not well ventilated or the temperature is too high, causing the silicone product to become brittle.
Solution: Pay attention to adjusting the ventilation and temperature control of secondary vulcanization.

Four. The raw material of silica gel itself.
The main reason for the rubber material is the brittleness of the silicone product. Usually, the silica gel product is brittle because the quality of the rubber itself is not good, and the tear strength is not up to the requirement. Moreover, many silicone product manufacturers are now in the rubber compound in order to reduce the cost. Filling the silicon powder to reduce the cost, which results in a more brittle material that does not meet the required tear strength.
Solution: Produce with pure rubber compound without adding silicon powder. For those with higher requirements, it is necessary to use the rubber products of Toshiba, Shin-Etsu, Dow Corning and other big brands for production. Special products may also be produced with high-strength glue (meteorological glue) to achieve tear strength requirements.
  to sum up:
Silicone products are known for their superior elasticity and superior high tear strength properties. Products made from silicone materials have a long service life, comfortable hand and flexible texture, which is unmatched by other materials. Among the above four reasons for the brittleness of the silicone product, the rubber itself is most likely to be brittle, while other factors are present, but the degree of influence is less. Therefore, when the silicone product is found to be brittle during the production process, the molding temperature should be excluded first, and then the reason of the rubber itself is up and down.