Water based resin is a new type of resin system which uses water instead of organic solvent as dispersion medium. It is fused with water to form a solution. After water volatilizes, a resin membrane material is formed. The water-based resin is not the water-based resin itself, but the membrane material obtained after water volatilization. The application of alternative solvent products in various fields. Waterborne polyurethane, as the representative, can be widely used in coating, adhesive, fabric coating and finishing agent, leather finishing agent, paper surface treatment agent and fiber surface treatment agent.
Packaging of water-based resin: the packaging of water-based resin generally uses opaque plastic containers, while the packaging of oil-based resin generally uses metal packaging barrels, because water will corrode the metal, resulting in package leakage or product deterioration.
Storage and transportation of water-based resin: sealed storage, and the storage and transportation needs to ensure that the temperature is between 5-30 ℃, prevent the temperature below zero, prevent freezing, and break the stability of the resin in water. The storage temperature can reach half a year or more.
Hardness and softness of water-based resin: after the water in the water-based resin evaporates, it will form a film. What we need is this film, that is, the hardness and softness of the film. When it comes to soft hardness, the demand for progress is a term, glass transition temperature Tg. Water based resins belong to high molecular polymers. Generally, there are three kinds of conditions for high polymers. As the temperature rises, there are glass state with high hardness, high elastic state with elasticity and viscous flow state with fluidity. TG is the transition temperature between hard and elastic.
Viscosity of water-based resin: the viscosity testing instruments of water-based resin include rotary viscometer (MPa. S) and tu-4 cup (s). Due to different viscosity used in different use scenarios, the viscosity of water-based resin can be adjusted by thickener.