Many people in the silicone market react that the silicone products they buy will produce odors or even pungent odors, mainly because various additives are used in the production process of silicone products, and this smell is due to the reaction of accelerators and vulcanizing agents. Produced; so some silicone product manufacturers choose relatively appropriate additives for this, or according to the smelly products, add appropriate chemical additives to react them.
Most manufacturers will choose flavors, masking agents, deodorants, adsorbents, and even combustion methods; but these auxiliary products are not attributed to deodorization, only to cover up the taste; deodorants of flavors are useless to conceal There are two disadvantages to using it as a masking agent:
1. This will produce a new pungent smell;
2. The odor will rebound. As the fragrance evaporates over time, the odor produced by the additives will not be covered, and the unpleasant odor will come out.
Therefore, to really remove the unpleasant odor of silicone products, the basic method is to optimize the selection of silicone raw materials and vulcanization system and process.
1. In terms of silicone raw materials and production and processing: often some silicone product manufacturers increase a certain share of recycled rubber in order to reduce costs, and they will also increase a certain share of polluting operating oil; however, these must also use environmentally friendly and tasteless and guess the rubber recycling The polluting volatiles have the operation oil that suppresses and degrades, and only then can be completed, and the cost will not be cheap. Therefore, we need to choose the odor of silica gel products on the basis of the quality and production of silica gel.
For example: choose the oil with high flash point and no odor; do not add reclaimed rubber; do not use accelerator CBS; do not use DCP and so on.
2. Vulcanization system and process: The silica gel is a gas phase adhesive, and the odorless vulcanizing agent is used to mix the rubber. After the silica gel is formed through the secondary vulcanization (the secondary vulcanization time is recommended to be greater than 4 hours, the temperature is about 200 degrees, and it is a vacuum oven.)