Charcoal

Poly(hexamethylene adipamide)—commonly known as Nylon-66—is a thermoplastic resin produced through the polycondensation of adipic acid and hexamethylenediamine. It typically has a molecular weight of 15,000 to 20,000 and a melting point range of 150°C to 250°C. The material is insoluble in common solvents, dissolving only in strong proton-donor solvents such as m-cresol; it has a density of 1.09–1.47 g/mL, a boiling point of 452.1°C (at 760 mmHg), and a refractive index (n20/D) of 1.565. It exhibits high mechanical strength, hardness, and rigidity, as well as outstanding flame resistance, with a tensile strength of up to 104 MPa.

Nylon 6 (Polyamide 6), also known as PA6, polyamide 6, or polyamide 6, has the chemical formula (C6H11NO)n, CAS Registry Number 25038-54-4, a melting point of 220℃, and a density of 1.13 g/cm3. It is a polymer compound.

Polybutylene terephthalate (PBT) is a semi-transparent or opaque, crystalline thermoplastic polyester resin—also known as polytetramethylene terephthalate—with the chemical formula (C12H12O4)n and a relative molecular mass of 30,000 to 40,000; it appears milky white or pale yellow with a glossy surface and has a density of 1.31–1.55 g/cm³.

GPPS plastic is short for General Purpose Polystyrene. It is a colorless, transparent thermoplastic with good rigidity but relatively low toughness. Its chemical formula is (C8H8)n, and its CAS number is 9003-53-6.

Polypropylene is lightweight, wear-resistant, antibacterial, and easy to dye, making it widely used in clothing, blankets, and other fiber products. It also possesses good insulation properties, leading to its use in manufacturing casings and components for appliances such as refrigerators, washing machines, air conditioners, and televisions. Furthermore, its excellent chemical stability, heat resistance, transparency, and mechanical properties make it suitable for manufacturing medical devices.

Its characteristics include excellent elasticity, abrasion resistance (more than 5 times that of natural rubber), high tensile strength (up to 70 MPa), and low-temperature resistance (down to -50°C). It also possesses oil resistance, hydrolysis resistance, and biocompatibility, making it a viable alternative to PVC in industrial and consumer applications.

ABS plastic is a terpolymer of acrylonitrile (A), butadiene (B), and styrene (S). It combines the properties of the three components: acrylonitrile provides high hardness and strength, heat resistance, and corrosion resistance; butadiene provides impact resistance and toughness; and styrene provides high gloss, easy coloring, and easy processing.

EVA is an important polymer material, and its industrial production typically employs a high-pressure continuous bulk polymerization process, in which nonpolar ethylene and highly polar vinyl acetate undergo a polymerization reaction under high temperature and pressure conditions.

Low-density polyethylene (LDPE) is the lightest type of polyethylene resin. It appears as milky white, tasteless, odorless, non-toxic, and matte waxy granules. It possesses good flexibility, extensibility, electrical insulation, transparency, ease of processing, and a certain degree of air permeability.

Titanium dioxide is an important inorganic chemical pigment, with titanium dioxide as its main component. There are two main production processes for titanium dioxide: the sulfuric acid process and the chloride process. The sulfuric acid process has the advantages of readily available raw materials and simple equipment, while the chloride process has advantages such as a shorter process flow and lower energy consumption.

Titanium dioxide is an important inorganic chemical pigment, with titanium dioxide as its main component. There are two main production processes for titanium dioxide: the sulfuric acid process and the chloride process. The sulfuric acid process has the advantages of readily available raw materials and simple equipment, while the chloride process has advantages such as a shorter process flow and lower energy consumption.

High-density polyethylene (HDPE) resin is a white powder or granular product with a density range of 0.941-0.960 g/cm3, a crystallinity higher than 65%, and is non-toxic and non-absorbent [1-2]. This material exhibits good heat and cold resistance, good chemical stability, high rigidity and toughness, good mechanical strength, and also good barrier properties, dielectric properties, and resistance to environmental stress cracking.

Resin powder is a powdered resin material produced through physical or chemical processing, and it is widely used in construction, coatings, adhesives, and industrial manufacturing. Depending on the specific composition and process, resin powder has diverse properties and applications.

Resin powder is a powdered resin material produced through physical or chemical processing, and it is widely used in construction, coatings, adhesives, and industrial manufacturing. Depending on the specific composition and process, resin powder has diverse properties and applications.

Resin powder is a powdered resin material produced through physical or chemical processing, and it is widely used in construction, coatings, adhesives, and industrial manufacturing. Depending on the specific composition and process, resin powder has diverse properties and applications.