Silica gel products appear what is the cause of the dark stripes?
In silicone products production process of our common lot of many, let's burn the brain is the problem of product quality, and quality problems also can be divided into many kinds, with human problems, there are natural phenomena, have mould problem, too have raw material problem and so on, then found product streaks, wiring problems about exactly what happened, the silica gel products factory take you know about the problem about the dark grain.
In our rubber mixing process in the first place, due to mechanization rubber mixing, mixing is not uniform, more or less will appear when added vulcanizing and masterbatch, the mixing time is too short, so lead to the inside of the original uneven color, color half deep shallow, so for rubber mixing researchers need to important, the first working procedure is the most important.
In place after the completion of the mixing time too long can lead to make silicone products appear bad product, generally placed too long the hardness of raw materials to products have very big change, should be in a timely manner to use, don't put too long, one or two days at most.
Just from practice in the forming process of the raw material for molding die, to the outside temperature debugging, such as not enough temperature can make the silicone products out after the stripes, even not familiar phenomenon, so every time you start to make the temperature to rise.
When sulfide too high will also appear problem, silicone raw materials itself as the transparent color, in the add color made by high temperature vulcanization, no problem under normal temperature, curing time is too long, however, as the temperature rise will cause pigment has a slight dispersion phenomenon in the raw materials, so products will appear in color deviation, appear dark mark, it's not sexual in production when the temperature is too high, the temperature is too low to no, keep moderate, such products can be resolved the dark mark phenomenon, let the customer more satisfied.
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