Is resin the same as polyurethane? What is polyurethane?

No, polyurethane is a type of resin, but the resin is not necessarily polyurethane.

Resin usually refers to an organic polymer that has a softening or melting range after being heated, and has a tendency to flow under the action of external force when softening, and is solid, semi-solid, and sometimes liquid at room temperature. Broadly defined, any polymer compound that can be used as a raw material for the processing of plastic products.

are all called resins.

Polyurethane is a polymer that contains a urethane group in the backbone of a macromolecule called polyurethane.

Polyurethane is divided into two categories: polyester polyurethane and polyether polyurethane. Polyurethane has many excellent properties, so it has a wide range of uses.

Polyurethane is a kind of resin, and there are many kinds of resins, phenolic resins, ABS resins, aldehyde and ketone resins, PVC, PE, PP and many more.

In the case of polyurethane, it is obtained by the reaction of polyols and isocyanates. The main raw material is the reaction of molecules with different molecular weights containing multiple hydroxyl groups and molecules containing multiple isocyanate groups. There are many ways to produce.

Polyurethane applications are too wide and there are various ways.

Used in the field of potting compound, their similarity is that they are all two-component, the use of equipment, the operation method is simple, but polyurethane has better weather resistance, no cracking at high and low temperatures, and is slightly more expensive.

It's different, polyurethane is a type of resin, but resin doesn't have to be polyurethane, understand? It's like a pig is an animal, but you can't say that an animal is a pig, hehe.

If you write the resin as you ask, you can write a thick book, brother, for no less than a year, can you pay the salary?

1. Composition. Polyester is a general term for polymers obtained by polycondensation of polyols and polyacids. It mainly refers to polyethylene terephthalate (PET), and customarily also includes linear thermoplastic resins such as polybutylene terephthalate (PBT) and polyaryl esters.

Polyurethane is a polymer containing urethane group in the macromolecular backbone called polyurethane, and polyurethane is divided into two categories: polyester polyurethane and polyether polyurethane.

Polyester: <>

Polyurethane: <>

2. Features. Polyester: good low temperature resistance, use temperature -100, high tensile strength, anti-aging.

Polyurethane: excellent oil resistance, solvent resistance, water resistance and fire resistance; It has high flexibility and resilience.

3. Application. Polyester: can be processed into fibers, films and plastic products.

Polyester fiber is an important variety of synthetic fiber, which is mainly used for wearing. The film is generally between 4 400 m thick, with high strength, good dimensional stability, and good chemical and dielectric resistance, and is used as a support body, and is widely used in making various tapes and magnetic cards.

Polyurethane: Polyurethane is mainly used as polyurethane synthetic leather, polyurethane foam, polyurethane coating, polyurethane adhesive, polyurethane rubber (elastomer) and polyurethane fiber. In addition, polyurethane is also used in civil engineering, site drilling, mining and petroleum engineering, playing the role of blocking water and stabilizing buildings or roadbeds; It is used as a pavement material for running tracks in sports fields and indoor floors in buildings.

Encyclopedia - Polyester.

Encyclopedia - Polyurethane.

What is the difference between polyurethane and polyester: The difference between polyurethane and polyester is that they are two different synthetic fibers as follows You see that polyurethane and polyester are two synthetic fibers respectively. Polyurethane, also known as spandex, is a highly elastic fiber with the feeling of a rubber band.

Polyester, also known as polyester, is one of the most commonly used synthetic fibers, and polyester-cotton cloth is a blend of polyester and cotton yarn. What is the difference between polyester fiber and polyurethane The abbreviation of polyurethane fiber, also known as polyurethane elastic fiber, is called spandex in China. Composition structure: Synthetic fibers prepared from polyurethane as raw materials by dry spinning or wet spinning.

It has a high elastic recovery rate and high elongation at break similar to rubber wire, its elastic elongation is up to 400 700, and the elastic recovery rate is 97 98 when the elongation is 500 600, but the strength is low, only.

Hello: polyester paint.

It is a thick paint made of polyester resin as the main film-forming material. The paint film of polyester paint is plump, and the layer is thick and the surface is hard. The same is true for polyester paint.

There are varnish varieties, called polyester varnish.

Polyester paints need to be cured during the construction process, and the amount of these curing agents accounts for one-third of the total paint weight. These curing agents are also known as hardeners, and their main ingredient is TDI (toluene diisocyanate). These free TDIs will turn yellow, which not only makes the furniture paint surface classic, but also makes the adjacent wall surface yellow, which is a major disadvantage of polyester paint.

At present, yellowing-resistant polyester paint has appeared on the market, but it can only be "yellow-resistant". It is not yet possible to completely prevent the canonization. In addition, free TDI beyond the standard can also cause harm to the human body.

Polyurethane paint. Polyurethane paint is polyurethane paint. It has a strong paint film, full luster, strong adhesion, water resistance, wear resistance, corrosion resistance, and is widely used in high-grade wood furniture, but also can be used on metal surfaces. Its disadvantages mainly include blistering in case of moisture, pulverization of paint film, etc.; with poly.

Like ester paint, there is also the problem of yellowing. The varnish variety of polyurethane paint is called polyurethane varnish.

I don't know if you're referring to just the field of furniture paint or wood paint or the classification in the coatings industry as a whole?

To understand this problem from the entire coating industry, polyester paint may be polyester amino paint, polyester isocyanate paint, polyester epoxy paint; Polyurethane paints may be polyester isocyanate paints, acrylic isocyanate paints, polyether isocyanates, epoxy isocyanate paints, one-component polyurethane paints and so on.

The polyester paint referred to in the home decoration paint is polyester isocyanate paint, which can also be called polyurethane paint, but polyurethane paint may be polyester isocyanate paint and acrylic isocyanate paint. Therefore, only in the field of home decoration paint, polyester paint is a kind of polyurethane paint.

Polyurethane, the full name of polyurethane, is a general term for macromolecular compounds containing duplicate urethane groups on the backbone. It is formed by the addition of organic diisocyanates or polyisocyanates with dihydroxy or polyhydroxy compounds.

There are two types of polyurethane: polyester type and polyether type. They can be made into polyurethane plastics (mainly foam), polyurethane fibers (known as spandex in China), polyurethane rubber and elastomers. Flexible polyurethane is mainly a thermoplastic linear structure, which has better stability, chemical resistance, resilience and mechanical properties than PVC foam materials, and has smaller compression deformation.

Good heat insulation, sound insulation, earthquake resistance and anti-virus performance.

The role of polyurethane:

Polyurethane can be used in the manufacture of plastics, rubber, fibers, rigid and flexible foams, adhesives and coatings, etc., and can be used in various areas of people's lives, with a wide range of applications.

1. Polyurethane foam material: it is divided into rigid polyurethane foam, semi-rigid polyurethane foam and flexible polyurethane foam material. Rigid polyurethane foam is mainly used as a building insulation material, insulation material (insulation for plumbing facilities, etc.), and daily necessities (bedding materials for beds and sofas, insulation layers for refrigerators, air conditioners, etc., and core materials for surfboards, etc.).

2. Polyurethane elastomer: Polyurethane elastomer has the advantages of good tensile strength, tear strength, impact resistance, wear resistance, weather resistance, hydrolysis resistance, oil resistance and so on. It is mainly used as coating materials (such as hoses, gaskets, wheel belts, rollers, gears, pipes, etc.), insulators, shoe soles and solid tires.

3. Polyurethane waterproof material: Polyurethane waterproof material is quite convenient to use, and can be mixed and coated on site for room temperature and moisture curing, so as to obtain a waterproof layer with no joints, rubber elasticity and good performance. And it is easy to repair after damage.

It is generally used as paving materials, track and field track materials, racetracks, park floor materials, heat-insulated window frames, etc.

The above content reference: Encyclopedia - Polyurethane.

What is the difference between polyether polyurethane and polyurethane Polyether is also known as polyethylene glycol ether, which is currently the largest sales volume of synthetic oil. It is a linear polymer prepared by using ethylene oxide, propylene oxide, epoxy butane, etc. as raw materials, and opening ring homopolymerization or copolymerization under the action of catalysts. Polyurethane is a general term for macromolecular compounds that contain repetitive urethane groups on the backbone.

It is made by the addition of organic diisocyanates or polyisocyanates with dihydroxyl or polyhydroxy compounds. In addition to carbamate, polyurethane macromolecules can also contain ethers, esters, urea, biuret, urea carbamate and other groups. Polyurethane materials are widely used in different parts of the world, and can replace rubber, plastic, nylon, etc., and are used in airports, hotels, building materials, automobile factories, coal mines, cement plants, high-end apartments, villas, landscaping, color stone art, parks, etc.