Silicone mold production and precautions

Silicone mould is one of the most simple methods of rapid tooling, generally used to carry out the prototype silicone complex model, but life is very short, only about 20. It has a very good flexibility and replication performance, with silicone rubber copy mode does not affect the size accuracy, there is a very good segmentation, do not have to divide up and down, can be directly cast. The die can be taken out by cutting the parting line again.

Room temperature vulcanized silicone rubber is divided into two types of addition and condensation type.

Using special silicone rubber mold, the product is sold in the form of double packaging, A group is the glue, B group is the catalyst. The strength and hardness of the room temperature and the mold should be taken into consideration to determine the weight proportion of the AB group. Room temperature at 25 - 20 degrees, A:B=100:1.5. Room low when the appropriate increase in the B group of 0.3 - 0.1 copies. Room temperature on the high side is reduced by 0.1 - 0.3 copies of the B group. According to the specific method is to determine the total amount of silica gel mold volume, and then B, A proportion of the proportion of accurate, placed in a container stirring evenly.

Mold making: the deployment of a good material, into the clean can be copied on the physical. In order to save materials, the production of thin silicone products, can also be divided into. In order to increase the tension of the mold can be paste gauze like. 2 hours at room temperature 20 degrees will be able to turn into a flexible body, a day after the use of.