Introduction to Two Common Types of Foaming Agents

Characteristics of Yellow Foaming Agent

The yellow foaming agent appears as a yellow to light yellow powder, with the color lightening as the particle size decreases. It has a relative density (water=1) of 1.65, is flammable but does not support combustion. The yellow foaming agent is the most economical and widely used organic chemical foaming agent in all industrial foaming agents. It is an exothermic foaming agent. The yellow foaming agent has good dispersibility, stable gas generation, and its decomposition products are non-toxic, tasteless, and non-polluting. It is mainly used for the production of closed-cell foamed rubber and plastic products. The decomposition temperature of pure ADC is 200~220℃, and the decomposition temperature of ADC can be lowered by adding foaming regulators to meet the needs of various rubber and plastic processing technologies.

The yellow foaming agent is suitable for EVA material products such as: shoe materials, yoga mats, yoga columns, children's toys, etc. It is used in EVA thermoforming, EVA granulation foaming molding processes.

Characteristics of White Foaming Agent

• White foaming agents generally produce fine foam pores and have high hardness. Compared to ordinary foaming agents, the foaming process of white foaming agents can be better controlled,

• The white powder of the white foaming agent has excellent whiteness, making it easier to manufacture whiter and purer white products,

• The white foaming agent undergoes an endothermic reaction and releases gas, which can avoid the phenomenon of excessive heat causing scorching during the foaming of thick products when too much AC is added.

• The white foaming agent undergoes an endothermic reaction, produces large foam pores with low gas production, and the foam pores are less likely to collapse. The products remain white, and it works better when used in combination with AC.

• The processing temperature can reach the best effect at 160-180 degrees Celsius.

Applications of White Foaming Agent

The white foaming agent is a chemical extensively used in both everyday life and industrial fields. The main components of the white foaming agent are polyether, polyester, lubricants, and catalysts. Among these, polyether or polyester is the main component, and its properties and uses are influenced by the materials. Polyether can form a stable and tough foam structure, while polyester is harder and produces foam plastics with good flame-retardant properties.

In the construction field, white foaming agents are often used to fill gaps in doors and windows, wall cracks, etc., to improve the sealing and insulation of buildings. In shoe and toy manufacturing, white foaming agents are used to make light and soft foaming materials, enhancing product comfort and durability. In addition, white foaming agents are also suitable for rubber, rubbers and plastics, and epoxy resin foaming, especially for sponge products and closed-cell foam plastics production.

Since white foaming agents are environmentally friendly, non-toxic, and odorless, they are widely used in various fields. However, it is important to use professional glue guns and control the temperature when using, to ensure its proper curing and optimal performance. At the same time, overuse should be avoided to prevent unnecessary environmental burden.