The hydration of polyurethane resin processed by waterborne polyurethane production lines has gradually replaced solvent based ones and become an important direction for the development of the polyurethane industry. Waterborne polyurethane can be widely used in coatings, adhesives, fabric coatings and finishing agents, leather finishing agents, paper surface treatment agents, and fiber surface treatment agents. After more than 20 years of research and development, we have mature design and manufacturing technology, which can design and adjust the formula of waterborne polyurethane according to the needs of users to meet practical requirements, and can prepare high-performance waterborne polyurethane.

Manufacturer of automatic water based polyurethane production line

The complete set of water-based polyurethane equipment is a combination of equipment specifically designed for the production of water-based polyurethane materials. It usually includes main equipment such as reaction kettle, raw material storage tank, phase conversion kettle, and maturation and dissolution kettle. Depending on the reaction conditions, different equipment combinations may be selected. These devices work together to complete production processes such as storage and addition of monomers and initiators, polymerization of prepolymers, dispersion and phase transition of waterborne polyurethane, and dissolution and maturation

Classification of waterborne polyurethane

1. According to particle size and appearance, it can be divided into polyurethane aqueous solution (particle size<0.001 μ m, transparent appearance), polyurethane aqueous dispersion (particle size: 0.001-0.1 μ m, translucent appearance), polyurethane lotion (particle size>0.1 μ m, white appearance);
   According to the charge properties of hydrophilic groups, waterborne polyurethane can be divided into anionic waterborne polyurethane, cationic waterborne polyurethane, and non-ionic waterborne polyurethane. Among them, the anionic type is the most important, divided into two categories: carboxylic acid type and sulfonic acid type.
2. According to different synthetic monomers, waterborne polyurethane can be divided into polyether type, polyester type, and polyether polyester hybrid type. According to the different diisocyanates used, waterborne polyurethane can be divided into aromatic and aliphatic, or specifically into TDI type, HDI type, and so on.
3. According to the packaging form of the product, water-based polyurethane can be divided into single component water-based polyurethane and two-component water-based polyurethane.
   The entire synthesis process of waterborne polyurethane can be divided into two stages. The first stage is pre stepwise polymerization, which involves the gradual polymerization of oligomeric diols, chain extenders, waterborne monomers, and diisocyanates through solution to produce waterborne polyurethane prepolymers with a relative molecular weight of 1000; The second stage is the dispersion of the pre polymer in water after neutralization.
   Water based PU has developed rapidly due to its environmental benefits, although its history is not long. Waterborne polyurethane includes polyurethane aqueous solution, aqueous dispersion and aqueous lotion. It is a binary colloidal system. Polyurethane (PU) particles are dispersed in a continuous aqueous phase, which is also called waterborne PU or water-based PU.

Waterborne polyurethane complete set

1. Production line system: storage and addition of monomers and initiators, polymerization reaction of prepolymers, dispersion and phase transition of waterborne polyurethane, and dissolution during the curing process.
2. Main equipment

Select different equipment according to different reaction conditions, mainly including reaction kettle, raw material storage tank, phase transfer kettle, maturation and dissolution kettle, etc.

Difficulty: Provide different phase conversion equipment according to different phase conversion requirements.