The function of flex pu catalyst in different fields is introduced

According to the different production and use of flex pu catalyst products, we usually choose to use three functions of the catalyst: promoting chain growth, promoting the reaction speed of some specific chemical reactions in the reaction system, regulating the balance of various complex reactions. All kinds of flex pu catalysts are based on
Different catalytic characteristics and the requirements of various industries for catalytic characteristics, respectively used in different fields.
First of all, the new material Xiaobian to introduce the application of flex pu catalyst in the foam industry:
Polyurethane foam industry has a high demand for flex pu catalyst, in order to mix and stir the thick polyol and isocyanate into solid porous materials, the catalyst is indispensable. It is necessary to have foaming effect and gel effect. Some products also need delay and trimerization effect. Therefore, in the preparation process of polyurethane foam, many kinds of catalysts are mixed. Tertiary amine catalyst, metal alkyl compound, organic amine salt catalyst are widely used in PU foam industry.
The second is the polyurethane coating, adhesive industry
Coatings and adhesives industry demand for catalysts mainly in two aspects: 1. Synthesis of prepolymers; 2. 2, the product to dry. Metallic alkyl compounds are widely used in coatings and adhesives because of their gelation requirements.
Finally, the polyurethane elastomer industry: most elastomers have almost harsh requirements on the moisture in the system, because the introduction of water will cause the generation of bubbles in the elastomer system, and then affect the quality of the product. In the field of elastomers, polyurethane synthetic leather resin is an important branch. The industry's requirements for bubbles in the system are not harsh, and almost all resin plants are using recovered DMF with high moisture, which proves this point. Contact with water is unavoidable in the production of wet process materials. The selection of flex pu catalyst in this industry is similar to that of coating and adhesive industry, but also faces the same environmental problems.