Precautions for the use of condensation mold silicone rubber

1. Component B of condensation mold silicone rubber is a catalyst, which is easy to be hydrolyzed by moisture, so the cover should be sealed after use.

2. Once groups A and B of condensation mold silicone rubber are mixed, chemical reaction; Starting immediately, the viscosity increases gradually and cannot be stopped. In order to avoid waste, it should be prepared with use according to the dosage. It should be used immediately after preparation without delay.

3. The mix proportion of silicone rubber a and B in condensation mold is related to the speed of chemical reaction and the performance of the mold. The more component B, the faster the reaction, the higher the strength and hardness of the product, but the toughness decreases. Therefore, accurate weighing is required.

4. Before the preparation of condensation mold silicone rubber, the component A shall be stirred up and down evenly and then weighed.

5. The pouring method is suitable for relief, and the brushing method is suitable for the manufacture of three-dimensional molds. For casting relief molds, a frame with a length and width of 4-6cm larger than the original length and width shall be made first. The border should be flat and the inner surface should be smooth. When pouring, place the frame on the clean glass plate, and then place the original in the frame, leaving a gap of 2-3cm on each side.

6. The normal vulcanization temperature of mold silicone rubber is what we usually call room temperature, but the climate in different regions is different, and the natural room temperature is also different. In order to vulcanize completely, we will match suitable vulcanizing agent according to the temperature of customers in different regions.