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目前显示的是 六月, 2026的博文

Plastic Tower Packing: Performance Characteristics and Applications

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Plastic tower packing is a widely used random or structured filling material in chemical separation processes, primarily manufactured from polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), and polyvinylidene fluoride (PVDF). Its advantages include low density (PP density approx. 0.90–0.92 g/cm³), high corrosion resistance (suitable for most acids, alkalis, and organic solvents), and significantly lower manufacturing cost compared to metal or ceramic packing. The operating temperature of plastic packing generally does not exceed 100°C (PP) to 150°C (PVDF), and it is suitable for atmospheric and low-pressure conditions. Typical plastic tower packings include Pall rings, cascade rings, Intalox saddles, and snowflake rings. For a Φ25 mm Pall ring made of PP, the specific surface area is approximately 200–220 m²/m³, void fraction reaches 90%–92%, and bulk density is about 75–85 kg/m³. Due to structural optimization, cascade rings exhibit 20%–30% lower pressure drop and 10%–15...

Wear-Resistant Alumina Ceramic Cuttable Perforated Plate: High Hardness and Customizable Processing Solution

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The wear-resistant alumina ceramic cuttable perforated plate is a functional ceramic sheet made from high-purity alumina (Al₂O₃) through high-temperature sintering, offering excellent wear resistance and impact strength. While retaining the high hardness of alumina ceramics, this product allows precise cutting and hole drilling using laser or diamond tools, making it suitable for applications such as mineral sorting, material conveying, wear-resistant linings, and chemical filtration. Standard alumina content ranges from 92% to 99.7%, with bulk density of 3.6–3.9 g/cm³, Rockwell hardness HRA 80–90, and flexural strength ≥300 MPa. Compared with conventional metal or rubber liners, this alumina ceramic plate exhibits 5–8 times higher wear resistance, significantly reducing equipment maintenance frequency over long-term operation. Its low friction coefficient (≤0.2) and high-temperature resistance (operating range -50°C to 1200°C) ensure structural stability in high-temperature dust envir...