Diantimony trioxide,powder

• CAS: 1309-64-4
• Catalog Number: ALC-FP-1309644
• Category: Featured Products
• Molecular Weight: 291.52
• Molecular Formula: O3Sb2
• Appearance: White powder
• Sb: Min. 82.3%(Titration by Iodine)
• Sample Lot No.: A23M0502x18
• Size: Max. 5.00 (μm)
• X-Ray Diffraction: Conforms to Structure

Case Study

Diantimony Trioxide for Enhancing Laser-Marking Performance of Thermoplastic Polyurethane

Cheng J, et al. Polymer Degradation and Stability, 2018, 154, 149-156.

The experimental application of diantimony trioxide (Sb₂O₃) in thermoplastic polyurethane (TPU) was systematically investigated to improve laser-marking properties. TPU/Sb₂O₃ composites were prepared via melt blending in a HAAKE mixer at 190 °C and 50 rpm for 10 min, incorporating Sb₂O₃ particles of 0.1, 0.3, and 0.6 μm at loadings of 4-8 wt%. The resulting composites were pressed into 2 mm sheets under 10 MPa at 190 °C. Surface markings were generated using a Nd:YAG pulsed laser (1064 nm), with visual and microscopic analyses revealing high-contrast black patterns. Characterization by X-ray diffraction, Raman spectroscopy, and thermogravimetric analysis confirmed that Sb₂O₃ efficiently absorbs laser energy, converting it to thermal energy that induces localized carbonization of the TPU matrix. The study demonstrates a precise experimental methodology to optimize Sb₂O₃ particle size, loading, and laser parameters, providing a reproducible approach for producing high-contrast laser markings on TPU materials.