During the production process, it may be found that silicone products are brittle and easily broken, seriously affecting production, and brittle silicone products do not meet the required service life. So, what are the reasons for the brittleness of silicone products?
1、 The structure or mold design of silicone products makes them prone to cracking.
Unreasonable product structure or mold design can cause silicone products to easily break during molding,
Solution: Modify the structure of the product or mold to achieve improvement, such as slightly thickening the areas that are too thin, slightly chamfering the corners at right angles, and so on.
2、 Excessive molding temperature or long vulcanization time can cause silicone products to become brittle.
Solution: Lower the temperature to control the curing time.
3、 Poor ventilation or high temperature during secondary sulfur addition can cause silicone products to become brittle.
Solution: Pay attention to adjusting the ventilation and temperature control for secondary sulfur addition.
4、 Silicone itself is a raw material.

The main reason for the brittleness of silicone products is due to the inherent quality of the rubber material. Usually, the brittleness of silicone products is due to the poor quality of the rubber material, which cannot meet the requirements for tear strength. In addition, many silicone product manufacturers now fill the rubber material with silicon powder to reduce costs, which leads to the rubber material that originally cannot meet the requirements for tear strength becoming more brittle.

Solution: Use pure rubber without adding silicon powder for production. For slightly higher requirements, it is also necessary to use large brand rubber for production. Special products may also need to be produced with high tensile adhesive (weather adhesive) to meet the tear strength requirements.