JOURNAL ARTICLE

Tungsten and Titanium dioxide filled VMQ polymer composites—a new lead free & flexible gamma ray-shielding materials.

  • Published In: Radiation Protection Dosimetry, 2023, v. 199, n. 20. P. 2438 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Kumar, Ramanagara Devaraj Kiran; Amrutha, Senamasetty Krishnappa; Ambika, Madalakote Rajanna; Chaitra, Rameshbabu; Nagaiah, Ningaiah; Roopa, Somanna 3 of 3

Abstract

This article focuses on the development and evaluation of flexible, lead-free gamma-ray shielding composites made from a Vinyl Methyl Silicone (VMQ) rubber matrix filled with Tungsten (W) and Titanium dioxide (TiO₂) particles. The study demonstrates that increasing tungsten content enhances gamma radiation attenuation, with the composite containing 70 parts per hundred rubber (phr) tungsten showing the best shielding performance, comparable or superior to some conventional polymer composites. Mechanical testing revealed that while hardness, compression strength, and tensile modulus increase with filler content, tensile strength decreases at higher tungsten concentrations due to particle agglomeration. Thermal analysis indicated good thermal stability of the composites up to approximately 260°C, supporting their potential use as environmentally friendly, flexible protective garments for medical and radiation environments.

Additional Information

  • Source:Radiation Protection Dosimetry. 2023/12, Vol. 199, Issue 20, p2438
  • Document Type:Article
  • Subject Area:Geology
  • Publication Date:2023
  • ISSN:01448420
  • DOI:10.1093/rpd/ncad283
  • Accession Number:174386500
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