First: Why does the mold silicone have less mold turning times?

 

         Answer: Too much silicone oil is added during the mold making process, and the silicone oil destroys the molecular weight of the silica gel, so the mold is less used and not durable.

 

         Second: Why does the mold silicone have poor tension?

 

         Answer: In the process of making the mold, the customer added a large amount of silicone oil in order to reduce the viscosity of the silica gel and make the silica gel easy to operate. This will cause the silica gel to become soft, not resistant to pulling, the tear strength is reduced, and the tensile force is deteriorated.

 

         Third: Why does the silicone mold appear to be oily?

 

         Answer: The reason for the oil leakage of the silicone mold is that a compound silicone oil is used in the production process, which contains white mineral oil.

 

         Fourth: Why is the silicone rubber mold not resistant to acid and alkali and aging?

 

         Answer: We do not recommend adding silicone oil in the process of making molds. If you add it, it must not exceed 5%. Silicone oil will destroy the molecular weight of silica gel.

 

         Fifth: Why is the rubber head of pad printing silicone not durable?

 

         Answer: It has a lot to do with the amount of silicone oil added to the silicone rubber. The greater the amount of silicone oil added, the softer and less durable the rubber head will be.

 

         . . . . . . .

          There are many problems that cannot be listed one by one, but through the above problems, it can be generally concluded that one reason is that silicone oil will destroy the molecular weight of silica gel. Friends who are familiar with silicone rubber products must know that silicone rubber and silicone oil belong to the category of silicone resin, and their difference in structure depends on the ratio of silicon atoms and groups in the molecular structure. The ratio of groups to silicon atoms in silicone rubber is close to two to one, while the ratio of groups to silicon atoms in silicone oil is greater than two to one. From the above, we can basically draw a conclusion that the higher the silicon atomic weight is, the closer it is to a solid, and the lower the silicon atomic weight, the closer it is to a liquid (silicon oil will not condense). Many common problems are due to the addition of silicone oil to change the ratio of the overall group of silicone rubber to silicon atoms, thereby reducing the hardness and number of uses of silicone rubber. Therefore, we must pay attention to the "quantity" in the process of using silicone oil.


About silicone oil, please check the details:
https://www.siliconefoam.net/product-hydroxyl-blocking-polymethyl-silicone-oil-(general-type)-iota-1203-.html