2016年6月7日星期二

Polyurethane coating in the application


Polyurethane material is a new organic polymer material, known as the "fifth largest plastics", due to its excellent performance and it is widely used in many fields of the national economy. Application fields are light industry, chemical industry, electronics, textiles, medical, construction, building materials, automotive, defense, aerospace, aviation, and so on.

Polyurethane resin as a high strength and tear resistance, wear-resistant properties of polymer material is widely used in daily life, industry, agriculture, medicine, and other fields. Polyurethane elastic used as belt, hose, car parts, soles, synthesis leather, wire cable and medical artificial organ. In additional, polyurethane can be made into emulsions, magnetic materials, etc.

Polyurethane resin gel is an ambient curing two-component, low viscosity, low odor, soft, transparent glue developed by polymer. It is suitable for epoxy glue by hand and machine.

Polyurethane coating is a common type of coating, and it can be divided into two-component polyurethane coating and one-component polyurethane coating. Two-component polyurethane coatings are generally is composed of isocyanate prepolymers (also known as low molecular weight polyurethane polymers) and hydroxyl-containing resin, commonly it is referred to as curing agent component and the base component. This type of coating has a very wide application, according to the different components of hydroxyl group, it can be divided into acrylic polyurethane, alkyd urethane polyether and polyester polyurethane, polyurethane, epoxy, polyurethane and other varieties. Generally they have good mechanical properties, high solids content, all of the performances are quite good.

It is currently a kind of promising coating. Main applications are wood coatings, automotive refinishing coating, anti-corrosion coating, floor coating, e-coating, special coatings, polyurethane waterproofing coatings and so on. But it need complicated procedures and very high standards for construction. One-component polyurethane coating mainly are polyurethane coating, moisture curing polyurethane coatings, sealed Polyurethane coatings and other varieties. But the application and its overall performance is not wider than two-component coatings, mainly for floor coatings, anti-corrosion Coatings, coil coatings, etc.

Features of polyurethane coating of okchem are excellent wear resistance; excellent chemical resistance and oil resistance; adhesion; low-temperature curing performance; high decorative properties; diversity performance and scalability. Through the improved formulation can be made into polyurethane coating membrane high hardness coating as well as good flexibility elastic coating; environmentally friendly low VOC coatings, etc. Read more!

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