Application Solutions Reaction injection molding (RIM), abbreviated as RIM, is a process technology that directly manufactures complex parts through rapid reaction from low-viscosity, highly reactive raw materials.
RIM material polyurethane is widely used in automobiles, construction, furniture, entertainment, sports and other fields due to its excellent physical and mechanical properties, with various uses.
1. Polyether polyol:
Highly active polyether polyol, amino-terminated polyether (polyetheramine)
2. Isocyanate
Carbodiimide-modified MDI, urethane-modified MDI, polymeric MDI (PAPI), mixtures of PAPI and modified MDI
3.Chain extenders and cross-linking agents
Glycol chain extender: ethylene glycol, diethylene glycol (diethylene glycol), 1,4-butanediol, etc.
Alcoholamine chain extenders: triethanolamine, diethanolamine;
Diamine chain extender: diethyltoluenediamine (DETDA), dimethylthiotoluenediamine (DMTDA), etc.
4.Catalysts and other additives
Tertiary amine catalyst: triethylenediamine (TEDA)
Organotin catalyst: dibutyltin dilaurate (DBTDL)
5. Foaming agent
Water, HCFC-141b, etc.
6. Other additives
Additives such as foam stabilizers, flame retardants, antioxidants, colorants and release agents,
7. Reinforcement materials
Fiberglass, flake glass, mica flakes,
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Application of polyurethane materials