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What are the common problems in the use of silicone prototypes? Next, the Xiehe prototype processing factory will give you a brief introduction.

1. What should I do if there are a lot of air bubbles in the mold silicone during the mold opening process? This situation should be handled according to the conditions. If there is a vacuum machine, the silicone and curing agent should be stirred evenly before vacuuming. If there is no vacuum machine, the amount of curing agent can be appropriately reduced for processing. For example, the ratio of the original silica gel to curing agent is 4%, and now it can be changed to 1%-2%. In this way, the silicone glue connection time of the mold in the early stage will be slowed down, and the air in the mold will be slowly discharged to reduce air bubbles.

2. What should I do if the silicone mold is not uniformly cured after curing? This phenomenon is caused by 1. The ratio of silica gel to curing agent is not accurate, and the weight is not as required; 2. The silica gel and curing agent are not carefully stirred evenly after mixing. This situation will cause the mold to be scrapped and should be avoided as much as possible.

3. What should I do if the silicone mold sticks to the mold? This situation is caused by the lack of reasonable treatment of the mold (product model) in the early stage, so the mold must be treated before the mold is opened, such as the surface of the mold is rough or To make a very complicated mold, it must be carefully polished and cleaned. Then apply the release agent evenly. Commonly used release agents include petroleum jelly, detergent, liquid paraffin, etc. In actual operation, different mold release agents can be applied according to the material of the model. The second is that the curing agent is poured into the mold if it is not stirred evenly, and when it is taken off, one piece is dry and one piece is not dry.

4. What should I do if the silicone mold product is deformed? This should be handled separately according to the size of the product. In principle, the size of the product is proportional to the hardness of the silicone used. For small products or very fine products, you can use very soft silicone to open the mold. The hardness is generally 10-20 degrees, which will facilitate mold release and will not damage the lines of fine products. For large products such as products larger than 50 cm, it is necessary to use silica gel with a hardness of 40-50 to open the mold. This way it won't deform. If you are making a large and fine product, you can use silica gel with a hardness of about 30 degrees to open the mold (the method is to brush a layer of silica gel and cover a layer of glass fiber cloth and then brush a layer of silica gel...), the outside can be Use gypsum and fiberglass (that is, unsaturated resin + glass fiber cloth) as the outer film to protect the product from deformation.

5. The method and material generally used in the production of the outer mold is to surround the mold with plastic boards or wooden boards, and fill the mold cabinet with gypsum. Another way is to use resin brushing. After brushing a layer of resin, paste a layer of glass fiber cloth, then paint and paste, repeat two or three layers
The outer mold of the mold can be completed.

The above content is the common problems about the use of silicone prototypes explained by the Xiehe prototype processing manufacturer. I hope it can be helpful to everyone. If you want to know more about the problems and solutions of Xiehe rapid prototype processing, please call the Xiehe rapid prototype processing factory, we will serve you wholeheartedly.