How to determine whether the quality of PU stone is qualified
As a widely used decorative material, the quality of PU stone directly affects the decorative effect and service life. Here are some key indicators and testing methods to determine whether PU stone is qualified:
Appearance inspection:
Color consistency: Uniformity is one of the primary considerations, and good PU stones have a uniform color without obvious color differences or spots.
Surface texture: The surface should be smooth and delicate, without obvious pores, cracks or scratches, and have a smooth hand feel.
Detail carving: For PU stones that imitate patterns, the patterns should be clear and three-dimensional, with smooth and natural lines.
Physical performance testing:
Hardness testing: Use a Mohs hardness tester or similar tool to gently scratch the surface. Good PU stones have high hardness and are not easily scratched by hard objects.
Impact resistance: Try a slight tapping or drop test to observe for cracks or breakage.
Flexibility: After bending at a certain angle and releasing, observe its recovery ability. High quality PU stone should be able to maintain its shape well without permanent deformation.
Chemical stability:
Waterproof: Drop a few drops of water on the sample and check the shape of the water droplets after a period of time. Good PU stone should quickly condense into beads without permeation.
Corrosion resistance: Soak in a weak acid-base solution for a short period of time and observe for signs of fading or dissolution.
Combustion test:
Ignite a small corner and observe the size of the flame and the residue after combustion. High quality PU stone burns slowly, produces less smoke, and has no toxic odor.
Environmental testing:
Confirm whether the product has passed RoHS, REACH or other international environmental certifications, which prove that its chemical composition meets health and safety standards.
Review document materials:
Require manufacturers to provide product quality reports and certificates of conformity, and if necessary, contact third-party organizations for re inspection.
Supplier evaluation and feedback:
Querying other buyers' evaluations of the supplier, especially information about product quality and after-sales service, can help evaluate the real situation from the user's perspective.
Through the above comprehensive evaluation, it is possible to comprehensively determine whether PU stone is qualified, ensuring the purchase of decorative materials that are both beautiful and durable.
