"blow" nach Englisch mit Beispielen - Kollokationen-Wörterbuch Englisch
- Blowing agents (also known as 'pneumatogens') or related mechanisms to create holes in a matrix producing cellular materials, have been classified as follows:
- Polystyrene foams are produced using blowing agents that form bubbles and expand the foam.
- High-density microcellular foams can be formed without the addition of blowing agents by mechanically frothing or nucleating the polyol component prior to use.
- The isocyanate is usually added by itself and the polyol stream is usually more complex, containing catalysts, surfactants, blowing agents and so on.
- Uses include refrigerants, blowing agents, propellants in medicinal applications, and degreasing solvents.
- There are two main types of blowing agents: gases at the temperature that the foam is formed, and gasses generated by chemical reaction.
- These blowing agents eventually leak out of the panels.
- Several states have banned polystyrene that uses CFCs as blowing agents.
- The majority use of hydrazine is as a precursor to blowing agents.
- May use a variety of blowing agents.
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