blowing agent

A blowing agent, which is the gas that forms the gaseous part of the foam.

These blowing agents eventually leak out of the panels.

The majority use of hydrazine is as a precursor to blowing agents.

Also proposal of its use as a safe high-performance foam blowing agent exists.

The carbon dioxide functions as a blowing agent.

May use a variety of blowing agents.

Since the blowing agent is a flammable gas, using large quantities in a short time requires strict attention to ventilation.

However, on cooling the blowing agent will condense, i.e. a reversible process.

Polystyrene foams are produced using blowing agents that form bubbles and expand the foam.

For many years, manufacturers used CFCs or urea-formaldehyde as blowing agents.

Initially, the process requires compounding the polymer with crosslinker, blowing agent, and other additives.

Eventually, as the blowing agent leaks, air replaces the insulating gas, and the R-value of the panel drops.

Several states have banned polystyrene that uses CFCs as blowing agents.

It is actually a puff blowing agent that does not bubble as much as regular puff ink.

There are two main types of blowing agents: gases at the temperature that the foam is formed, and gasses generated by chemical reaction.

Pentanes are some of the primary blowing agents used in the production of polystyrene foam and other foams.

Uses include refrigerants, blowing agents, propellants in medicinal applications, and degreasing solvents.

Produced through mixing of isocyanate and polyether in presence of catalyst and blowing agent.

Over time, CFCs found uses as refrigerants, solvents, foam blowing agents, and in other smaller applications.

Mixed physical/chemical blowing agents - e.g. used to produce flexible PU foams with very low densities.

It was developed as a "fourth generation" refrigerant to replace R-134a and as a blowing agent for foam and aerosol applications.

Because this particular photoinitiator produces nitrogen gas (N) upon decomposition, it is often used as a blowing agent to change the shape and/or texture of plastics.

Its volatility has led to its use as an aerosol spray propellant and as a blowing agent for polyurethane foams.

Blowing agents that produce gas via chemical reactions include baking powder, azodicarbonamide, titanium hydride, and isocyanates (when they react with water).

Blowing agents (also known as 'pneumatogens') or related mechanisms to create holes in a matrix producing cellular materials, have been classified as follows: