Development of PU coatings
What is PU?
Polyurethane (PU), the full name of polyurethane, is a polymer compound. It was made by Otto Bayer in 1937. Polyurethane is divided into two categories: polyester type and polyether type. They can be made into polyurethane plastics (mainly foamed plastics), polyurethane fibers (called spandex in China), polyurethane rubbers and elastomers.
Soft polyurethane is mainly a thermoplastic linear structure, which has better stability, chemical resistance, resilience and mechanical properties than PVC foam materials, and has less compression deformation. It has good thermal insulation, sound insulation, shock resistance and anti-virus performance. Therefore, it is used as packaging, sound insulation, filter material.
What are PU products?
Rigid polyurethane plastic is light in weight, excellent in sound insulation and thermal insulation, chemical resistance, good electrical properties, easy processing, and low water absorption. It is mainly used in construction, automobile, aviation industry, thermal insulation structural materials. The performance of polyurethane elastomer is between plastic and rubber, oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness and elasticity. Mainly used in shoe industry and medical industry. Polyurethane can also be used to make adhesives, coatings, synthetic leather, etc.
Polyurethane products mainly include the following: foamed plastics, elastomers, fiber plastics, fibers, leather shoe resins, coatings, adhesives and sealants. Polyurethane appeared in the 1930s. After nearly 80 years of technological development, this material has been widely used in the field of home furnishing, construction, daily necessities, transportation, and home appliances.
Development of PU coatings
The research and development and application of polyurethane coatings have been carried out since the 1950s. With the continuous improvement and improvement of the material living standards of the public, the development speed of a series of industries such as automobile processing, furniture manufacturing and processing, petrochemical industry, machinery industry, bridge and shipbuilding has been continuously improved. With its outstanding performance advantages, polyurethane coatings have begun to enter the market. A whole new stage of rapid development.
From the perspective of R&D and application of polyurethane coatings, the most mainstream is still two-component polyurethane coatings, which have been continuously expanded and improved in the fields of wood furniture coating and other fields. In addition, one-component polyurethane coatings still have very strong application advantages in automotive processing, basement waterproofing and other fields. This type of coating uses polyurethane as the main material and has very good application value in the production of various paints and varnishes.
The newly developed acrylic polyurethane paint uses biuret as the curing agent, and its application value in automotive refinish paint is quite reliable. Especially for light vehicles, large passenger cars and vans, the coating function in vehicle processing is very worthy of recognition, and the market prospect is considerable. Various types of new polyurethane coatings developed on the basis of acrylic polyurethane coatings can also exert application value in other manufacturing and processing fields to meet the processing quality requirements of household appliances, trains and other processed objects.
In addition, special polyurethane coatings that can be applied to floor coating, machine tool coating, aerospace equipment surface coating and other fields are in the stage of accelerated development and research.
Release agents supplier
Huagechemical is a professional release agent supplier provides high quality and effective PU release agent, shoe sole release agent, MSD release agent, wood based panel release agent.
Our product line includes Products include release agent, chemical additives, color paste, paint curing agent. Application areas include PU soles, PU car carpets, wood-based panels, paper (food), metal die casting, paint and glue curing agent products, etc. Our aim is to create value for customers and contribute to society.
If you have any questions about PU paste&pigment or other products, or would like to seek the latest quotation, please feel free to contact us.