Price of waterborne polyurethane resin
In the 1990s, with the strengthening of people's awareness of environmental protection and environmental protection laws and regulations, the research and development of environmentally friendly waterborne polyurethane attracted more and more attention. Its application has expanded from leather finishing agent to coatings and adhesives, and gradually occupied the solvent-based polyurethane market, representing the development direction of coatings and adhesives. Surprisingly, among waterborne resins, waterborne polyurethane is still the representative of excellent resin and one of the hot spots in modern waterborne resin research.
Wuhan Shiquanxing Direct Selling Waterborne Polyurethane Resin: 20 yuan
Polybond high solid water-dispersible polyurethane resin: ￥32
Polyurethane resin pu-259 1 waterborne polyurethane resin: RMB 22.
New and new manufacturers selling non-curing waterborne polyurethane resin: RMB 24.
(Price source network, for reference only)
Types of Waterborne Polyurethane Resin
Charge properties based on hydrophilic groups
Waterborne polyurethane can be divided into anionic waterborne polyurethane, cationic waterborne polyurethane and nonionic waterborne polyurethane. Among them, anionic type has the largest output and the widest application. Anionic waterborne polyurethane can be divided into carboxylic acid type and sulfonic acid type. In recent years, nonionic waterborne polyurethane has been studied more and more in the aspects of macromolecular surfactants and associative thickeners. Cationic waterborne polyurethane has good permeability, antibacterial and mildew-proof properties, and is mainly used as leather finishing agent.
Divided by monomer for synthesis.
Waterborne polyurethane can be divided into polyether type, polyester type, polycarbonate type and polyether-polyester mixed type. According to the difference of diisocyanate, waterborne polyurethane can be divided into aromatic, aliphatic, araliphatic and alicyclic, or specifically into TDI, IPDI, MDI and so on. Aromatic waterborne polyurethane, similar to oily polyurethane, has obvious yellowing and poor weather resistance, and belongs to low-end popular products. Aliphatic waterborne polyurethane has good color retention and weatherability, but it is a high-end product with higher price. The properties of araliphatic and alicyclic are somewhere in between.
Application of Waterborne Polyurethane
Leather finishing agent
The basic use of waterborne polyurethane is as leather finishing agent. China also has large-scale production.
Polyurethane resin is flexible and wear-resistant, and can be used as coating agent and mending agent for natural leather and artificial leather. Waterborne polyurethane finishing agent overcomes the weakness of acrylic emulsion finishing agent, and the leather treated by it is soft, smooth, plump, bright and has strong leather feeling, which can greatly improve the grade of leather products and enhance market competitiveness.
Early waterborne polyurethane was linear and thermoplastic; In order to improve its strength, hardness, water resistance and solvent resistance, an appropriate branching or external crosslinking agent can be formed by introducing trifunctional monomers.
Waterborne polyurethane coating
Solvent-based polyurethane coating is a kind of high-grade coating, and its output has increased rapidly in the 1990s. However, the conventional solvent-based polyurethane coatings contain about 40% organic solvents, so the VOC (volatile organic compounds) of the coatings bring great pollution to the atmosphere. One of the development directions of 2 1 century coatings is environmental protection coatings, that is, low pollution or pollution-free coatings. It mainly includes high solid coatings, water-based coatings, powder coatings and radiation-cured coatings. Among them, waterborne coatings are the most important category.
At present, coatings based on waterborne polyurethane dispersions have developed rapidly in developed countries. Waterborne polyurethane products for wood, metal and plastic substrates have been put on the market continuously, and some of them have entered the China market.
The above is Bian Xiao's detailed knowledge about waterborne polyurethane resin. I hope our sharing can help everyone. Waterborne polyurethane resin is a new type of environmental protection material in our life, which is often used in coatings and adhesives. Waterborne polyurethane resin coatings include high solid coatings, waterborne coatings, powder coatings and radiation-cured coatings. These coatings are very common, not only very environmentally friendly, but also harmless to our health. Waterborne polyurethane resin coating is soft, smooth, plump and bright, with strong leather feeling.
Tubatu Online provides you with "every decoration quotation, 1-4 local decoration companies, 3 sets of decoration design schemes" and the decoration pit avoidance strategy for free! Click this link:/Zhu Ye /zxbj-cszy.php? to8to _ from = SEO _ zhidao _ m _ jiare & amp； Wb, you can get it for free ~