Resins typically refer to organic polymers that soften or melt upon heating, exhibit a tendency to flow under external forces when softened, and are solid or semi-solid at room temperature, though they can also be liquid. In a broad sense, any high molecular compound that can be used as a raw material for plastic processing is termed a resin.
There are natural resins and synthetic resins. Natural resins refer to amorphous organic substances obtained from secretions of animals and plants in nature, such as amber, shellac, etc. Synthetic resins are produced through chemical synthesis of simple organic substances or chemical reactions involving certain natural products, such as phenolic resins, polyvinyl chloride resins, etc., with synthetic resins being the main component of plastics.
By synthetic reaction
This method allows resins to be classified into adduct polymers and condensation polymers. Adduct polymers are polymers obtained through addition polymerization reactions, with the chemical formula of their chain segments identical to that of the monomer molecules, such as polyethylene, etc.
Condensates are polymers obtained through condensation polymerization reactions, whose structural unit chemical formulas differ from the monomer molecular formulas, such as phenolic aldehyde resins, polyamide resins, etc.
Based on the molecular main chain composition
This method allows resins to be categorized into carbon chain polymers, heterochain polymers, and elemento-organic polymers.
Carbon chain polymers refer to polymers whose main chains are entirely composed of carbon atoms, such as polyethylene, etc.
A random-chain polymer refers to a polymer whose main chain is composed of atoms of two or more elements such as carbon, oxygen, nitrogen, and sulfur, such as polyformaldehyde, polyamide, polysulfone, polyether, etc.
Element organic polymers refer to polymers where the main chain may not contain carbon atoms, primarily composed of atoms of elements such as silicon, oxygen, aluminum, titanium, boron, sulfur, and phosphorus, such as organosilicon.
As nature dictates
Thermosetting resins (commonly used in glass fiber reinforced plastics): Unsaturated polyester/vinylester/epoxy/phenolic/bis-maleimide (BMI)/polyimide resins, etc.
Thermoplastic resins: Polypropylene (PP), Polycarbonate (PC), Nylon (NYLON), Polyether Ether Ketone (PEEK), Polyether Sulfone (PES), etc.
Synthetic resins are a type of high polymer made by artificial synthesis. Their primary application is in the manufacturing of plastics. To facilitate processing and improve performance, additives are often added, and sometimes they are used directly for forming, making them synonymous with plastics. Synthetic resins also serve as the basic raw materials for producing synthetic fibers, coatings, adhesives, insulating materials, and more. There are many types of synthetic resins, with polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), and ABS resin being the five major general-purpose resins, widely used in synthetic resin materials.
Resin craftworks
This collection of craft items incorporates resin materials, fully utilizing their benefits in terms of smooth lines and bright texture.