There are two ways to prepare resin:
1. Polymerization reaction:
Polymerization reaction is a process by which monomers (also called monomers Molecules) are linked together to form a polymer resin. These monomers can be liquid or solid, and they polymerize in reactions to form long chains or cross-linked structures.
One of the most common polymer resins are polyethylene and polypropylene, which are produced by the polymerization of ethylene and propylene monomers. Polymer resins usually require a catalyst or initiator to promote the reaction, as well as controlling temperature and reaction conditions.
2. Transesterification reaction:
Transesterification reaction is a common method of synthetic resin and is usually used to prepare polyester resin. In this reaction, chemical bonds between esters (compounds containing ester groups) are broken and then rejoined to form new ester compounds.
This reaction usually involves the use of an esterifying agent at high temperatures to promote the exchange of ester groups. This process can be used to prepare many different types of polyester resins, such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT).
Application of resin
1. Plastic products:
Polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) and other resins Used in manufacturing plastic products such as bottles, bags, packaging materials, plastic containers, etc. Polystyrene (PS) is used to make foam cups, crisper boxes, toys, etc.
2. Construction and building materials:
Polyvinyl chloride (PVC) is used to manufacture pipes, windows, floors and other building materials. Epoxy resins are used in floor coatings, adhesives and sealants.
3. Electronic products:
Polyimide (PI) is used to manufacture high-temperature electronic components. Epoxy resin is used for encapsulation and coating of electronic circuit boards (PCBs).
4. Automobile industry:
Polycarbonate (PC) is used in automobile windows, front windshields, etc. Polyurethane (PU) is used in car seats, interior trim and sound insulation.
5. Medical field:
Polypropylene (PP) and polyethylene (PE) are used to manufacture medical equipment and instruments. Polylactic acid (PLA) is used in biodegradable medical supplies such as sutures and implants.
6. Packaging and containers:
Polyethylene terephthalate (PET) is used to make plastic bottles, food packaging, etc. Polypropylene (PP) is used to make food boxes, beverage bottle caps, etc.