Chemical Storage Tank Mould

The material used for chemical tanks is high-density polyethylene (HDPE), which is also known as low-pressure polyethylene. HDPE is not easily weldable using a plastic welding torch, but it can be heated with a hot iron to create a bond with the same material. Alternatively, high-pressure polyethylene (LDPE) or EVA plastic can be heated to bond with HDPE. HDPE is a soft material with better toughness and cannot be glued together using any adhesive available in the world. If sticking is necessary, surface treatment must be performed to ensure proper adhesion.

HDPE (high-density polyethylene): HDPE is a highly crystalline, non-polar thermoplastic resin. It has a milky white appearance and a certain level of translucency in thin sections.

PE exhibits excellent resistance to most domestic and industrial chemicals. However, certain chemicals can cause chemical corrosion, such as concentrated nitric acid (corrosive oxidants), xylene (aromatic hydrocarbons), and carbon tetrachloride (halogenated hydrocarbons). HDPE does not absorb moisture and has good water vapor resistance, making it suitable for packaging applications. It also possesses excellent electrical properties, especially high dielectric strength, making it suitable for wire and cable insulation. Medium to high molecular weight grades of HDPE exhibit excellent impact resistance, even at room temperature and as low as -40°F. Chemical plastic buckets are typically made from hollow-grade low-pressure polyethylene. Different brands and origins of this raw material exist, and their quality may vary. Manufacturers often choose the appropriate brand based on product requirements.