Qualification and control points of polyurethane foaming technology

In recent years, Polyurethane foaming technology is constantly improving and can produce better quality foaming agents. However, there are some key points that need to be mastered in order to control this technology. Only by strictly controlling the technical points can we master the core technology and continuously innovate and upgrade.

1. The physical and chemical properties of the original solution need to be controlled

For this technology, the chemical properties of isocyanates, foaming agents, combined polyethers and catalysts contained in black and white materials are very important. Their chemical properties need to be strictly controlled so that polyurethane foam products can meet quality requirements and avoid quality problems.

In black and white materials, there is a viscous liquid that is transparent and difficult to dissolve with other impurities. Once impurities appear, the filter of the foaming agent will be blocked, the flow will be unstable, and the black and white materials will not be evenly matched. Once the situation is serious, the foaming agent will be blocked and unable to work properly.

2. The ratio and injection volume of the original solution need to be controlled

When using polyurethane foaming technology, the black material, combined polyether and cyclopentane must be strictly proportioned, no more and no less. When the total injection volume does not change, a large proportion of black material will cause cavitation and no performance. If the proportion of white material is too large, soft bubbles will appear. If the ratio of black and white materials is unbalanced, it will cause the foam to shrink and not perform well.

In order to avoid this situation, you need to choose a strong brand supplier, such as Shanghai Weigu, focuses on the research of polyurethane foaming technology and provides customized polyurethane foaming technology application solutions. Wide range of uses, can be applied toDoor and window construction, automobile manufacturing, electronic industryand other industry fields.

3. The production temperature and aging time need to be controlled

Polyurethane foaming is a very complicated process, from the selection of raw materials to the design of the mold Use, as well as control of temperature and curing time, will affect foaming quality.

The above points are very important and are the core of polyurethane foaming technology. Only by strictly controlling these points can we produce qualified foaming agents. span>