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Home > Chemial News > Blog > Water Based Polyurethane Related Collection

Water Based Polyurethane Related Collection

ECHEMI 2022-05-13

Essentially a plastic in the form of a liquid until it dries, polyurethane is available in both Water- and oil-based options, and comes in varieties from satin to glossy.

Water-based polyurethane is popular because of its low odor and low toxicity. It goes on clear without adding a slight color that oil-based versions can, and it dries much faster. As with shellac, water-based polyurethane won't hold up well to heat and chemicals.

 

Oil VS Water Based Polyurethane

Oil-based polyurethane is slightly more durable than water-based, especially when it comes to handling heat, so a kitchen table is a good candidate. It adds a slight color tone and will bring out the richness of wood.

When working with oil-based polyurethane, use a respirator in a well-ventilated area. Apply using a natural-bristle brush or rag. Oil-based takes much longer to dry and cure than water-based.

Read More: https://www.echemi.com/cms/9928.html

 

How to Apply Water Based Polyurethane

√ Water based polyurethane coating spraying tips

Spraying method is one of the main methods in the construction of water-based polyurethane coatings, can obtain a thin and uniform coating film, for heterogeneous parts, small holes, gaps, concave and convex places, the coating can be evenly distributed; for spraying large pieces, this method is faster and more effective than painting. The construction by spraying method must also master some operational tricks: …

 

 Disadvantages of water based polyurethane

Water-based polyurethane coatings still have the disadvantages of long film formation time, poor water resistance of the paint film caused by the presence of hydrophilic groups in the paint, air bubbles in the paint film, and high raw material costs.

 

 Performance properties of graphene oxide/water-borne polyurethane nanocoatings

Graphene oxide (GO) is a good nanofiller candidate for waterborne coatings because of its outstanding physical and mechanical properties, good dispersibility in water, and low cost relative to graphene. Scientists report on the performance of a one-part, water-borne polyurethane (WPU) nanocoating formulated with four different GO loadings ([0.4% to 2.0%] by mass).

 

Water Based Polyurethane Industry News

● SKshu launched the first water based polyurethane waterproof coating

Recently, Sankeshu Waterproof Online Wealth Forum and New Product Launch Conference was a complete success and launched the industry's first water-based polyurethane waterproof coating at the press conference.

 

 Water-based polyurethane composite anticorrosive barrier coating

The anticorrosion properties of the pristine PU and composite coatings were investigated by electrochemical impedance spectroscopy tests for 96 h. The composite coating reinforced by two carbon nanomaterials simultaneously underwent no corrosion after immersion for 96 h, and the corrosion resistance was better than that of the other coatings.

 

 Research and development of 4 types of mainstream water-based coatings

With the continuous improvement of environmental protection, human health and the quality requirements of coatings, the comprehensive use of multiple modification methods and the development of new modification methods have become the main research directions of waterborne polyurethane coatings.

 

 Covestro used new bio-based water-based polyurethanes to reduce carbon emissions

It is understood that in this process, Huafeng used some bio-based water-based polyurethanes under the Covestro INSQIN product series, and half of the carbon content of this product comes from bio-based raw materials. Compared to production using conventional fossil-based water-based polyurethane and virgin polyester fabrics, the new solution can reduce greenhouse gas emissions by approximately 230 grams of carbon dioxide equivalent per pair of shoes.

 

 A number of mandatory national standards will be implemented soon

In recent years, due to the improvement of environmental protection requirements and awareness, China's water based polyurethane industry has developed rapidly, with the growth rate far exceeding the overall polyurethane industry. From the initial leather coating to textile coating, synthetic leather slurry, wood coating, industrial coating, automobile coating, polyurethane condom, the application field of water based polyurethane has been expanding and the technical level has been continuously improving. The environmental protection supervision has opened up a new development space for water-borne polyurethane materials.

 

 Allnex started construction of the world's largest single factory

After completion, it will mainly produce water-based epoxy coating resins and curing agents, water-based polyurethane resins, water-based radiation curing resins, phenolic coating resins, and polyester acrylate resins, Amino resins and radiation curing special resins, etc., are widely used in construction, home furnishing, high-speed rail, automobiles, electronics, packaging inks and special-purpose coatings, etc.

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