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How much do you know about the two major stages of polyurethane foaming?

2022-07-07

Polyurethane foaming machine is widely used in the market and attached great importance to in various industries, but do you know the two stages of the formation of polyurethane foaming machine?

According to the polyurethane foaming machine, the formation of foam needs to go through two stages: foaming process and aging process. The process of polyurethane foaming machine from the mixing of a and B materials to the stop of foam volume expansion can be called foaming process. During the foaming process, the polyurethane foaming machine system releases a large amount of reaction heat (about 109kj can be released by the reaction of 1mol active hydrogen and 1mol isocyanate radical), which vaporizes the foaming agent into each cell of the foam.

Drive the bubble volume to expand continuously. At this time, each cell is affected by two forces: atmospheric pressure (i.e. external pressure) and the pressure generated by the expansion of foaming agent (i.e. internal pressure). When the internal pressure is greater than the external pressure, the volume of the foaming system will continue to expand; When the pressure inside and outside the cell is equal, when the foam body of the polyurethane foaming machine no longer expands, the so-called "expansion time" is reached.

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Guangdong Fuleite Electromechanical Technology Co., Ltd., located in Shenghui North Industrial Zone, Nantou Town, Zhongshan City, Guangdong Province, is a polyurethane machinery automation production enterprise integrating R & D, production, sales and after-sales service. Our company specializes in the research, development and manufacture of various polyurethane foaming machines, cyclopentane foaming machines, automatic foaming production lines (suspension lines / ground rail lines / disk lines, etc.), automatic foaming mold frames, mechanical arms and other complete sets of polyurethane foaming equipment, helping thousands of polyurethane product production enterprise users achieve "high product excellence rate and low equipment failure rate".

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Mobile phone: 18948898927

E-mail: fuleitejd@163.com

Web site: www.puflt.com

Add: Hongjian Industrial Park, Shenghui North Industrial Zone, Nantou Town, Zhongshan City, Guangdong Province. 34 Tongji west road