2023.05.18
When the foam mechanical equipment is turned on, it condenses into a liquid, and a certain amount of foaming agent and water vapor are left in the pre-expanded beads. The liquid foaming agent dissolves in polystyrene, and the pressure in the bubble drops immediately, and the beads in the bubble Soft, easily deformed, negative pressure (partial vacuum) occurs. Therefore, when supplying air, try not to make the wind pressure too large, and the bending radius should be as large as possible (to reduce the collision resistance). The inner wall of the pipe should be as smooth as possible. If the beads are damaged, the air supply speed shall not exceed 8m/s.
A certain amount of foaming agent and water vapor are left in the pre-released beads of the foaming mechanical equipment. When the power is turned on, they condense into a liquid. The liquid foaming agent dissolves in polystyrene, and negative pressure (partial vacuum) appears in the bubbles. The pressure in the bubble drops instantly, and the beads are soft and easily deformed. Therefore, when blowing air, try not to make the wind pressure too high, the inner wall of the pipe should be as smooth as possible, and the bending radius should be as large as possible (to reduce collision resistance). The pipe is a good conductor of electricity, so the entire line must be grounded, and the air supply speed should not exceed 8m /s, to prevent the electric ignition of the use process of the eps static foam machine.
The beads just out of the foam mechanical pre-expansion machine are all wet. After being released from the pre-expansion machine, they absorb air and suddenly cool down, causing the foaming agent in the honeycomb foam cells to condense, forming negative pressure in the foam cells, and the beads pre-expanded. After hair, it must be left for a period of time. On the one hand, it is dry, and on the other hand, it is saturated with air to eliminate negative pressure, and the internal pressure and external pressure in the foam cells are balanced.
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