Processing flow of silicone prototype model

In the prototype model making industry, in addition to often using plastic materials for processing, it can also be processed with a material called silica gel, the viscosity of the prototype model made of it is very thin, it is very convenient to operate, its shape will not change, it will not shrink, it is also very easy to remove, the surface of the mold is very smooth, and the simulation effect is very good. Here is a brief introduction to the first two processing processes. 1. Silicone is a liquid that can flow, Group c is a silicone, and Group d is a curing aid. The number of d added is generally 2% to 3%. For example, take out 100 grams of Group c and 2 grams of Group d, add d to the inside of Group c, and be sure to stir them evenly. If the local temperature is 10 degrees, the number of d can reach up to 5%. If the local temperature is minus 5 degrees, even if more d and c are added, there will be no reaction, and it will not solidify after a long time. 2. First of all, we should handle the original model or the product to be copied. Because the copied product or model has not been polished, in fact, the model or product is not very smooth, and the mold you make with the silica gel of the column layer will not be good, in fact, the products are not very smooth. 3. Clean the inner surface of the mold with alcohol, wrap the silicone mold with tape, so that the upper and lower molds are completely consistent. According to the sample volume, the weight of the resin is calculated to be 829. In order to ensure that the product is fully formed, 100g is taken. According to the ratio of 1: 1, 50g each of isates and polyols are weighed, the materials are added to the vacuum chamber to vacuum and poured into the silicone mold, and then heated and cured in the oven to obtain the physical parts.

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