Dichloromethane
Dichloromethane solvent plays an irreplaceable role in many aspects of industrial production and daily life. In the industrial field, from precision electronic component cleaning to large-scale coating and adhesive manufacturing, dichloromethane is everywhere; at the same time, dichloromethane is also a foaming agent.
Cas No.:75 09 2
Purity:99.99%
What Are The Effects of Different Purity of Dichloromethane on Foaming Effect?
Impact on foaming efficiency
High-purity dichloromethane: The gasification speed is relatively stable and fast. It can quickly gasify and produce a large amount of gas during the foaming process, causing the foam to expand rapidly, thereby improving the foaming efficiency and shortening the foaming time. Especially in large-scale production, it can effectively improve production efficiency.
Low-purity dichloromethane: The presence of impurities may interfere with the gasification process of dichloromethane, making its gasification speed unstable or slow, resulting in reduced foaming efficiency, prolonged foaming time, and increased production costs and production cycles.
Effect on cell structure
High-purity dichloromethane: It can be uniformly vaporized and dispersed in the system during the foaming process, which helps to form a uniform and fine pore structure, making the density distribution of the foam more uniform, the mechanical properties more stable, and improving the quality and performance of the foam.
Low-purity dichloromethane: Impurities may affect the dispersion of gas and the formation of pores, resulting in uneven pore size, and there may be problems such as local pores being too large or too small, and inconsistent pore wall thickness, making the density distribution of the foam uneven, the mechanical properties unstable, and reducing the quality and reliability of the foam.
Effect on foam properties
High-purity dichloromethane: Due to its high purity, it will not introduce too many impurities and other unknown components during the foaming process, so as to better ensure the chemical stability and physical properties of the foam, make the foam have better elasticity, toughness, compressive strength and other properties, and extend the service life of the foam.
Low-purity dichloromethane: Impurities may react with other components in the foaming system, or affect the compatibility between the foaming agent and other raw materials, thereby changing the chemical structure and physical properties of the foam, reducing the elasticity, toughness, compressive strength and other properties of the foam, and easily causing cracking, breakage, deformation and other problems, reducing the service life and use effect of the foam.
Impact on reaction heat control
High-purity dichloromethane: High purity means that its heat of vaporization is relatively stable. It can absorb the heat generated by the reaction more effectively during the foaming process, better control the reaction temperature, prevent the foam from burning the core and spontaneous combustion due to overheating, and ensure the safety and stability of the foaming process.
Low-purity dichloromethane: Impurities may affect the heat of vaporization and heat absorption of dichloromethane, reduce its ability to absorb reaction heat, and fail to effectively control the reaction temperature in a timely manner, increasing safety risks such as burning the core and fire. At the same time, it may also cause the performance of the foam to decline due to excessive temperature.
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