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硅橡胶模具制作方法及注意事项

Making methods and notices of silicone rubber mold

橡胶模具是快速模具里的一种最为简单的方法，一般是用硅胶将RP原型进行复模，但寿命很短，只有10-30件左右！它具有很好的弹性和复制性能，用硅橡胶复制模可不用考虑拔模斜度，不会影响尺寸精度，有很好的分割性，不用分上下模可直接进行整体浇注。再沿预定的分模线进行切割取出母模就可以了！

Rubber molds are the simplest method in rapid tooling, usually using silica gel to mold the RP prototype, but the life is very short, only about 10-30 pieces. It has good elasticity and duplication performance. The use of silicon rubber duplicating die can not take into account the slope of drawing die, and it will not affect the dimensional accuracy. It has good segmentation, and it can be cast directly without having to be divided into the lower and lower modes. Then cut along the predetermined parting line and get the female mold.

室温硫化硅橡胶又分为加成型和缩合型两种：

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

原料及配方采用专用模具硅橡胶，该品系以双包装形式出售，A组份是胶料，B组份是催化剂。配制时要考虑室温、模具的强度和硬度，以此来确定AB组份的重量配制比例。

The raw material and formula are specially moulds silicone rubber. The product is sold in double package, A component is rubber compound, B component is catalyst. The temperature and the strength and hardness of the mold should be taken into account in order to determine the weight and proportion of AB components.

室温在20-25度时，A：B=100：1.5。室低时（但不能低于10度）则适当增加B组份0.1-0.3份。室温偏高则减少B组0.1-0.3份。具体方法是依据模具体积确定总用量，然后将A、B组份按比例称量准确，置于器皿中搅拌均匀，即成。

At room temperature at 20-25 degrees, A:B=100:1.5. When the chamber is low (but not less than 10 degrees), the 0.1-0.3 fraction of the B component should be appropriately added. The high temperature at room temperature reduces the 0.1-0.3 portion of B group. The specific method is to determine the total dosage according to the volume of the mold, then accurately proportionate the components of A and B, and stir them evenly in the utensils.

制模：将调配好的材料，倒入待仿制的清洁的实物上即可。为了节省材料，制得较薄的模具，也可分次涂刷。为增加模具的拉力可糊纱布之类。在室温20度条件下2小时就能固化为弹性体，一天后就可使用。

Mould making: pour the prepared materials into the clean object to be copied. In order to save materials, thin moulds can be made, and they can be painted in different stages. In order to increase the tension of the mold, the paste can be paste. It can be solidified into elastomers within 2 hours at room temperature of 20 degrees, and can be used in a day.

硅橡胶模具制作注意事项：

Silicone rubber mold production attention:

1、B组份是催化剂，易受潮水解，故用后应将盖子盖严。

1, B component is catalyst, easy to moisten and hydrolyze, so the lid should be tightly covered after use.

2、A、B组一经混合，化学反应；立即开始，粘度逐渐上升，无法中止，为避免浪费，应根据用量，随用随配，配好后应立即使用，不可延误。

2, A, B group once mixed, chemical reaction; immediately start, the viscosity gradually rise, can not stop, in order to avoid waste, should be based on the dosage, with the use, should be used immediately after the use, not delay.

3、A、B组的配合比，关系到化学反应的速度和模具的性能。B组份越多，反应越快，制品的强度和硬度越高，但韧度随之降低。因此，称量要求精确。

3. The mixture ratio of A and B is related to the speed of chemical reaction and the performance of mould. The more the B components, the faster the reaction, the higher the strength and hardness of the products, but the lower the toughness. Therefore, the weighing is required to be accurate.

4、配制前，应将A组份料上下搅拌均匀，再称量。

4, before mixing, A ingredients should be mixed up and down and weighed.

5、浇注法适宜于浮雕类，涂刷法适用于立体类模具的制作。浇注浮雕类的模具应先制作长宽都大于原长宽各4-6CM的边框。边框要平正，内面要光滑。浇注时将边框放置在干净的玻璃板上，再将原件放在框中，每边留出2-3CM的间隙

5. Pouring method is suitable for relief sculpture, and brush method is suitable for making stereoscopic mould. The moulds for casting relief should be made of 4-6CM with a width larger than the original length and width. The frame should be smooth and the inner surface should be smooth. When pouring, place the frame on the clean glass plate, then place the original in the box, leaving a 2-3CM gap on each side.