There are many types of foaming agents, and their raw materials can be divided into several categories based on their chemical properties and foaming principles.
I. Physical foaming agents.
II. Chemical foaming agents.
III. Surfactants (key additives).
Factors to consider when choosing a foaming agent:
Decomposition/vaporization temperature: Must match the processing temperature of the base material.
Type and amount of gas produced: Affects the foaming ratio and foam density.
Environmental protection and safety: Whether it depletes the ozone layer, whether it is flammable, and whether it is toxic.
Cost: Consider both raw material costs and processing costs.
