What are the materials of plastic products?

What are the materials of plastic products?

Plastic products are mainly divided into two types of thermoplastic and thermosetting, the following is a detailed introduction, I hope to help.

1. Thermoplastic

Thermoplastics, also known as thermoplastic resins, are the main category of plastics. They are made of synthetic polymer materials that can flow to each other by melting with heat and are able to cure again. These materials typically have high molecular weight and have a repetitive molecular chain structure. Thermoplastics can be processed by injection molding, extrusion, blow molding, calendering and other processes to make parts and products of various shapes and sizes.

(1) Polyethylene (PE) : PE is one of the most common plastics, widely used in packaging, pipes, wire insulators and other purposes. According to its molecular structure and density, PE can be divided into high density polyethylene (HDPE), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE).

Polypropylene (PP) : PP is also a common plastic, commonly used in containers, bottles, and medical devices. PP is a semi-crystalline plastic, so it is tougher and more transparent than PE.

(3) Polyvinyl chloride (PVC) : PVC is one of the world’s highest production of plastics, widely used in construction materials, wire insulators, packaging and medical devices and other fields. PVC can be colored and is resistant to most chemicals.

(4) Polystyrene (PS) : PS is commonly used to make lightweight, transparent packaging materials, such as food containers and storage boxes. PS is also widely used to make foam, such as EPS foam.

Acrylonitrile-butadiene-styrene copolymer (ABS) : ABS is a tough, impact-resistant plastic commonly used to make tool handles, electrical housings, and auto parts.

(6) Others: In addition, there are many other types of thermoplastics, such as polyamide (PA), polycarbonate (PC), polyformaldehyde (POM), polytetrafluoroethylene (PTFE) and so on.

2, thermosetting plastic

Thermosetting plastics are a special class of plastics, different from thermoplastics. These materials do not soften and flow when heated, but are cured by heat. Thermosetting plastics typically have higher strength and hardness and are suitable for applications that require greater durability and strength.

Epoxy resin (EP) : Epoxy resin is a tough thermosetting plastic widely used in the construction, electronics and automotive industries. Epoxy resins can react chemically with other materials to form powerful adhesives and coatings.

(2) Polyimide (PI) : Polyimide is a highly heat-resistant plastic that can maintain its properties at high temperatures. It is widely used in the aerospace, electronics and automotive industries to manufacture high-temperature resistant components and coatings.

(3) Others: In addition, there are many other types of thermosetting plastics, such as phenolic resin, furan resin, unsaturated polyester and so on.