The thermos bottle filled with hot water, the thermos bottle stopper wouldn't come out? Have good days, who can help me?
Originally, when boiling water poured into the thermos bottle, water vapor to large evaporation, because the cork cork and wear, so the mouth of the friction force decreases, and instead leak. So, water vapor through the gap cork and bottle, issued a buzzing sound, the friction force is not enough, the plug will be water vapor the pressure rushed out.
However, pull out the best method of the bottle stopper is actually very simple, as long as the rotation of the cork, named air to have the opportunity to flow into the thermos bottle inside. In this way, the external and the internal pressure is equal, thermos bottle is easy to take off.
When the water off a part of the thermos bottle, the upper started up a lot of air. Because the thermos insulation performance is not good, the gas will become cold at night, with the pressure of smaller, less than atmospheric pressure, the cork in the outside world under atmospheric pressure, plug to suck, until the bottle diameter small parts to prevent it to further shrink to go in. At this time, the external pressure is still larger than the pressure of the thermos bottle, the outer and inner pressure difference, so difficult to pull out the cork.
There are two reasons for this phenomenon: one is the vacuum interlayer is not good. For example: the mercury plating layer off, leading to the prevention of heat radiation ability is poor. The vacuum flask or the seal is broken, dissection is no longer a vacuum, ability to prevent heat conduction difference. Because there is a cork wear small or leak. My bottle should be the latter.
