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Isopentane blowing agent

Isopentane is a colorless and transparent liquid with a low boiling point and good volatility. These properties enable it to vaporize rapidly during the foaming process, thereby forming a large number of bubbles. In addition, isopentane has good solubility and dispersibility, and can be fully mixed with the polymer matrix to provide uniform bubble distribution for the foaming process....

Release time：2025-04-26

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Basic properties of Isopentane blowing agent

Isopentane is a colorless and transparent liquid with a low boiling point and good volatility. These properties enable it to vaporize rapidly during the foaming process, thereby forming a large number of bubbles. In addition, isopentane has good solubility and dispersibility, and can be fully mixed with the polymer matrix to provide uniform bubble distribution for the foaming process.

Detailed explanation of the mechanism of Isopentane blowing agent

1. Cell formation stage: During the foaming process, isopentane vaporizes rapidly after being heated, producing a large amount of gas. These gases form tiny pores in the polymer matrix, laying the foundation for the subsequent expansion and stabilization of the cells.

2. Cell expansion stage: With the increase of temperature and the continuous generation of gas, the cells gradually expand, and the continuous vaporization of isopentane provides sufficient power for the uniform and rapid expansion of the cells.

3. Cell stabilization stage: When the cells expand to a certain extent, the vaporization rate of isopentane gradually slows down, and the pressure in the cells tends to stabilize. At this time, the viscosity and elasticity of the polymer matrix begin to play a role, preventing the cells from further consolidating and rupturing, thereby ensuring the structure and performance of the foamed products.

Key factors in the isopentane blowing agent process

During the isopentane foaming process, key factors such as temperature, pressure, and isopentane concentration have a significant impact on the foaming effect. Reasonable control of these parameters can achieve precise control of the size, distribution, and density of the pores, thereby obtaining ideal foamed products.

Application of Isopentane blowing agent

Isopentane is widely used in plastics, rubber, coatings, and other fields due to its unique foaming mechanism and excellent performance. In plastic products, isopentane blowing agent can improve the seismic performance of products and reduce the density and cost of products; in rubber products, it can improve the elasticity and wear resistance of products; in the field of coatings, isopentane blowing agent can give coatings good heat insulation and anti-corrosion functions.

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