Reasons why pentamethyldiethylenetriamine must be used in the production of polyurethane products

As all manufacturers of polyurethane products know, pentamethylenediethylenetriamine is an essential catalyst in the manufacture of polyurethane products, playing a key role in the process of foaming polyurethane products. In the three steps of emulsion, hair and surface drying required for polyurethane products, the time of emulsion is manipulated by this component, so why must it be used?

First of all, the longer the emulsion time is, the better, especially in the production of soft foam. Because of the long emulsion time, actually means delayed foaming, and delayed foaming to play a role is more conducive to shaping. We now have a lot of products are irregular products. For example, some crafts and so on, very afraid of bump, need some foam products to protect the packaging and then transport, if the foam time is too short, then the molding is too fast, so it is difficult to create a more complex shape to. And the role of pentamethylene diethylenetriamine is to greatly extend the emulsion time, so that you can have sufficient time to shape the material into different shapes.

Secondly, the foaming speed is accelerated. For hard foam, mainly used in sofas and other furniture, so that it is soft, comfortable and flexible, and has a long service life; or used on the outside wall, to play the role of "insulation", when used on the outside wall often need to paint a layer of lime shell, so it needs to have a certain bearing capacity, and the need for higher density, so as to have better toughness. This can have better toughness, so that not only can play a role in insulation, and also very convenient for the subsequent maintenance of the building. If the foaming speed is slow, the product's bubble hole will be larger, which will make the material is not strong enough, easy to damage or deformation, the service life will be greatly shortened. The main role of this component is used to speed up the foaming speed. Because it is a highly active catalyst, it will make the foam more fluid, and when used with other materials, the effects superimpose on each other and often improve the quality of the product.

Although only a small amount of pentamethylenediethylenetriamine is needed to achieve a certain effect in the production process, but if you want it to play a perfect role, it must be arranged according to the different needs of the product to use different amounts, not blindly. And in the mixing of a variety of raw materials need to be able to evenly blend to prevent the surface of the product will have defects uneven!