The bubble nucleation step occurs simultaneously with the decomposition of the blowing agent particles, and it begins at an initiation site within the polymer melt that has been supersaturated with the blowing gas
. Owing to the continual supply of gas, the pressure in the nucleated bubbles increases, whereas the pressure of the polymer matrix is maintained at atmospheric pressure during the entire process.
Another type, the fluidized bed freezer, keeps food suspended by blowing gas
up through the conveyor belt.
Molders enhance fluorination barrier several ways: by removing all oxygen from inside the parison with a nitrogen purge before blowing fluorinated nitrogen into the part; controlling mold temperatures; optimizing the amount of fluorine in the blowing gas
, as well as hold time and pressure; repeating treatment as much as three times; or blowing with a pulsating movement of fluorinated gas.
Unlike other forms of endoscopic thyroid surgery, it doesn't require blowing gas
into the neck to create space to perform the operation.
The website explains that to help accomplish this fundamental task of delivering natural gas to customers, more and more utilities are taking steps to minimize occurrences of blowing gas
due to pipe line breaks caused by third-party damage and natural disasters.
In addition, the conductivity of blowing gas
is much smaller than that of polymer.
Today, most manufacturers make foams by blowing gas
bubbles into liquids whose viscosity must be precisely controlled.
Combined with the larger size of the particles, quite big voids form, which enable a stable growth by diffusion of the blowing gas
without the need of additional energy for bubble formation.
In comparison, an excavation area of three larger holes would be required for squeezing the line due to MLGW standard operating procedures of not allowing workers to work in holes with blowing gas
from PE pipe.
At first, the supernovas "blew off the caps" of the galaxy; later explosions have created a "galactic wind" that keeps blowing gas
out of the galaxy, Tully says.
This also keeps operators out of the ditch and away from blowing gas
. Each tool Timberline develops is specific to a company's application needs and pipe sizes.
[v.sub.gas] Specific volume of the blowing gas
The resulting lack of blowing gas
availability for the foaming process deteriorates the final foam cell morphology and causes incomplete volume expansion.
Although static can be present at dangerous levels at any point in the distribution system, two particular instances which pose a consistently dangerous static dangers to distributors are squeeze-offs and broken lines blowing gas