Views: 0 Author: Site Editor Publish Time: 2024-09-23 Origin: Site
Color: High-quality POM sheet usually has a uniform color without obvious color differences. If the sheet has uneven color, it may indicate uneven mixing of raw materials or the presence of impurities during production.
Surface flatness: Touch by hand and visually inspect whether the surface of the sheet is flat and smooth. High-quality POM sheet should have no obvious dents, ripples, scratches, and bubbles. An uneven surface may affect subsequent processing and performance.
Transparency (for transparent POM sheet): For transparent POM sheet, observe whether its transparency is high and whether there is turbidity or fog. High transparency indicates better quality.
Strength and stiffness: Use appropriate testing equipment or conduct simple bending and tensile tests to assess the strength and stiffness of the POM sheet. High-quality sheets should have high strength and stiffness to withstand various mechanical loads.
Impact resistance: Drop a small weight from a certain height onto the sheet to test its impact resistance. Good-quality POM sheet should be able to withstand a certain degree of impact without cracking or breaking.
Wear resistance: Use abrasion testing methods to evaluate the wear resistance of the sheet. High-quality POM sheet has excellent wear resistance and can maintain its surface integrity for a long time.
Measurement accuracy: Measure the dimensions of the sheet with precision measuring tools. High-quality POM sheet should have accurate dimensions and small dimensional deviations.
Thermal stability: Subject the sheet to different temperatures to observe its dimensional changes. Good-quality POM sheet has good thermal stability and minimal dimensional changes under varying temperature conditions.
Resistance to solvents and chemicals: Immerse the POM sheet in common solvents and chemicals for a certain period and observe whether there is any sign of degradation or swelling. High-quality sheets should have good resistance to solvents and chemicals.
Reputable manufacturer: Choose products from well-known and reputable manufacturers. These manufacturers usually have strict quality control systems and advanced production technologies to ensure product quality.
Certifications: Look for POM sheet with relevant certifications, such as ISO quality management system certification. Certifications can provide an additional guarantee of product quality.