Foaming method of foam

DATE：2021/8/12 8:39:53 / READ： / SOURCE：This station

Foaming method of foam

      There are three foaming methods for foam plastics.

      (1) Physical foaming method

      The gas is dissolved in the plastisol or melt under pressure, or in the reactable reaction components, the gas is separated from the plastisol or melt after depressurization, and the plastic is solidified at the same time. It can also be directly dissolved in the polymer particles under liquid pressure, and then heated to the boiling point of the liquid, and the polymer is foamed by the generated vapor pressure. This method has expandable polystyrene foam. www.handern.com Foam Sheet Equipment
      As a low boiling point liquid as a foaming agent, it should meet the following requirements
      ①Odorless, non-toxic, non-corrosive and non-flammable;
      ②) Low molecular weight and high density;
      ③ Particularly affect the physical and chemical properties of polymers; www.handern.com foamed sheet equipment
      ① In gaseous state, it has good thermal and chemical stability
      ⑤ Convenient source and low price.
      Low-boiling liquids that meet the above requirements include: aliphatic hydrocarbons, chlorine- or fluorine-containing aliphatic hydrocarbons, in addition to cyclic, aliphatic hydrocarbons, aromatic hydrocarbons, alcohols, alcohols, ethers, etc. www.handern.com Foam Sheet Equipment

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