Dimethyl silicone oil has a shelf life, if stored properly, sometimes even if it has reached the shelf life, dimethyl silicone oil through detection, it can still be used.But there is also another case, too much impurities in the air, dimethyl silicone oil storage improper may deteriorate, even if not to the shelf life, the product can not be used.How to detect whether dimethyl silicone oil deteriorates? 

    1, light method.On a clear day, use a screwdriver to lift up the dimethylsilicone oil at a 45 degree Angle to the horizontal plane.Control the sunlight, observe the oil droplets, in the light, can clearly see no debris in the oil is good, can continue to function, if the debris is too much, should be replaced.

    2. Oil droplet trace method.Take a clean white filter paper, drop the number of drops of oil on the filter paper, after the leakage of dimethyl silicone oil, if there is black powder on the surface, touch with the hand has a sense of resistance, it indicates that the impurities in the oil have been many, if it is of good quality, there should be no powder, dry and smooth to the touch with the hand, and yellow traces.

    3, hand twist method.The dimethylsilicone oil twist in the thumb and index finger repeatedly grinding, the better quality of the hand feel lubricity, less debris, frictionless, if you feel the sand between the fingers like a larger sense of friction, it shows that the oil impurities, can no longer be used, should be replaced.

    4, oil flow observation method.Take two cups, one of which need to be checked out of dimethyl silicone oil, empty on the desktop, the other will be filled with oil measuring cup for leave desktop 30 to 40 cm tall and lean, let oil flow slowly to the empty cup, to observe the flow situation, good quality should be long and thin, uniform, continuous, if appear oil flow fast and slow, sometimes with large flow, said is bad.

    When dimethylsilicone oil deteriorates, if not replaced in time, it will accelerate the wear and tear of parts, affect the service life, so the corresponding method can be used for detection chemical also recommended here is that we should pay attention to the storage of dimethyl silicone oil at ordinary times to ensure the normal use of dimethyl silicone oil.