Introduction to HDPE Flame-Retardant Board
HDPE flame-retardant board is an engineering plastic with superior comprehensive performance and multiple characteristics.
- Modifiable Applications: Can be modified for special purposes such as flame-retardant, anti-static, and radiation-resistant boards.
- Melt Characteristics: Polyethylene melt is a non-Newtonian fluid, with viscosity showing minimal fluctuation with temperature changes. Viscosity decreases rapidly with increasing shear rate in a linear relationship, with LLDPE exhibiting a slower decline.
- Corrosion Resistance: At room temperature, it resists corrosion from acids, alkalis, and saline solutions but is not resistant to strong oxidants such as fuming sulfuric acid, concentrated nitric acid, and chromic acid.
- Solubility and Water Absorption: Insoluble in common solvents at room temperature, with low water absorption. It features excellent electrical insulation, low density, good toughness (also suitable for low-temperature conditions), good tensile strength, excellent electrical and dielectric insulation, low water vapor permeability, good chemical stability, and high tensile strength.
Performance Characteristics of HDPE Flame-Retardant Board
Wear Resistance
Among engineering plastics, high-molecular-weight polyethylene coal bunker liners and wear-resistant products exhibit outstanding functional performance. Higher molecular weight results in greater wear resistance, surpassing many metal materials (e.g., carbon steel, stainless steel, bronze). For instance, UHMW-PE pipes under strong corrosion and high-wear conditions have a service life 4–6 times that of steel pipes.
Corrosion Resistance
Maintains stable performance in acid, alkali, and corrosive solutions at temperatures up to 80°C.
Friction Coefficient
With a friction coefficient of 0.07, it is widely used in bearings, bushings, sliders, and other mechanical components without the need for lubricants.
Impact Resistance
Exhibits strong impact resistance, with an impact strength 66 times that of nylon and 8 times that of PTFE. At low temperatures, its impact strength reaches optimal values, providing reliable assurance for functional delivery systems.
Electrical Properties
Has high volume resistivity and is suitable as a structural material for electrical systems in buildings across a wide range of temperatures and frequencies.
Applications of HDPE Flame-Retardant Board
Can be applied in industries such as chemicals, clothing, packaging, and food. It can be filled, made flame-retardant, or modified, with surfaces that can be embossed or frosted.
