People who often use silica gel should know that mold silica gel can be divided into addition type and condensation type, which are also different in materials and uses. Next, we will analyze the uses and differences between addition type silica gel and condensation type silica gel from the aspects of composition and use.
1、 Composition and application of silica gel for addition mold
Addition mold silica gel is a two-component addition molding environment-friendly silica gel. It consists of two parts: component A is silica gel, component B is curing agent, and the two components are mixed in the ratio of 1:1; Environmental friendly, non-toxic and odorless, transparent liquid silica gel material, temperature resistance of -65 ℃ -250 ℃, not limited by product thickness, can be cured at room temperature for 1-3 hours or heated at 100 ℃ for a few minutes. Due to the environmental protection, non-toxic and odourless of silicone material for addition mold, it can be used for the production of silicone products such as human wax model, simulated robot, simulated human wax, adult supplies, food and food material mold, cake mold, candy mold, simulated vegetables, tooth mold production, yacht gel coat, speedboat gel coat and rubber mold production. All uses of condensation mold silicone can be applied for addition molding.
2、 Composition and application of silica gel for condensation mould
The proportion of silica gel a and B components of condensation mold is generally 100:2~2.5. The organic tin curing agent is used, which will produce small molecules and a little smell. The default color is white and translucent, and other colors can be modulated with pigments; Room temperature vulcanization molding, easy to demould. Condensation mold silica gel is mainly used for product model replication and mold production in various industries, such as cultural relics replication, resin crafts jewelry mold production, plaster products replica production, cultural stone and other building materials products replica production, toy gift Model replica, mahogany furniture imitation, shoe mold production, Buddha carving crafts, etc.