2020 China New Design N,N,N\\\’,N\\\’-Tetramethylethylenediamine - Pentamethyldiethylenetriamine (pmdeta) – Sincere
2020 China New Design N,N,N\\\’,N\\\’-Tetramethylethylenediamine - Pentamethyldiethylenetriamine (pmdeta) – Sincere Detail:
Five methyl two ethyleneamine three is a highly reactive catalyst for polyurethane reaction. It mainly catalyzes the foaming reaction, and is also used to balance the overall foaming and gel reaction. It is widely used in all kinds of polyurethane rigid foam, including polyisocyanurate plate rigid foam. Because of its strong foaming effect, it can improve the fluidity of foam, so it improves the production process and improves the volume of production. It often shares with DMCHA and so on. The five methyl two ethyleneamine three amine is used alone as the catalyst for polyurethane foam formula, and can also be shared with other catalysts. 0-2. 0 parts per 100 parts of polyol.
In addition to the rigid foam formulation, five methyl two ethyleneamine three can also be used in the production of polyether polyurethane soft foam and molding foam. For example, 70% of pentamethylenediethylenetriamine is mainly used in the formulation of soft foam products. The catalyst has high activity, fast foaming speed, high toughness and high bearing capacity. In soft foam, 0.1-0.5 phr of the catalyst per 100 phr of polyether can get better effect. It can also be used as an auxiliary catalyst for hard foam.
The five methyl two ethyleneamine three amine quaternary ammonium salt is a delayed catalyst for soft foam, which is used to prolong the foaming time. It is suitable for foam products with complex shape and box type foaming process, and improves the structure of foam and improves the molding quality. The range of its own dosage is quite wide, and the change of dosage has no obvious effect on the whitening time; But increasing the dosage can shorten the rising time of foam and shorten the curing time.
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By Roland Jacka from America - 2018.09.21 11:01
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