Silicone mold is one of the most simple method in rapid mold, the mold is generally used silicone complex prototype, but life is very short, only about 20 pieces. It has good flexibility and replication performance, with a copy of the mold will not affect the dimensional accuracy of silicone rubber, there is a good separation, without the upper and lower mold, can be directly poured. Then cut out the master mold along the predetermined parting line. The company is located in:
Room temperature vulcanized silicone rubber is divided into two types of additive and condensation.
The use of special silicone rubber mold, the goods sold in the form of double packaging, A group is rubber, B group is a catalyst. The room temperature, mold strength and hardness should be taken into account in order to determine the proportion of weight of the AB group. Room temperature at 20-25 degrees, A: B = 100: 1.5. Appropriate to increase the room when the low B component 0.1-0.3 copies. When the room temperature is high, 0.1-0.3 copies of Group B are reduced. The specific method is based on the volume of silicone mold to determine the total amount, and then the A, B components proportionally weighed accurately, placed in the vessel stir Serve.
Molding: The deployment of good materials, to be copied into the kind of clean to be imitated. In order to save material, made of thin silicone mold, but also graded brushing. To increase the pull of the mold can be paste gauze and the like. In 20 degrees at room temperature for 2 hours can be turned into an elastomer, can be used after a day.