Moisture-cured elastomeric transparent UV and X-ray shielding organic-inorganic hybrids

作者：Yang C^*; Tang Y H; Lam W M; Lu W W; Gao P; Zhao C B; Yuen M M F

来源：Journal of Materials Science, 2010, 45(13): 3588-3594.

DOI：10.1007/s10853-010-4404-9

• Adjustable mechanical properties
• Elastomeric coatings
• Optical transparency
• Organic-inorganic hybrid
• Personal protection equipments
• Shielding applications
• Synthesis and characterizations
• Titanium Isopropoxide

We report the synthesis and characterization of a kind of silane-terminated poly(ether-urethane) (PEU)-titania elastomeric hybrid for UV and X-ray shielding application. The hybrids can be easily synthesized by a moisture-cured sol-gel process at room temperature. Strong interactions between the organic and inorganic domains in these hybrids are obtained through the hydrolysis-condensation of the silane end group of the prepolymer with titanium isopropoxide (TTIP), which forms a 3D hybrid network. These hybrids exhibit adjustable mechanical properties, in a range dependent on the organic/inorganic content ratio, e.g., the hybrid containing 40 wt% of TTIP exhibits 69.3% elongation at break and excellent resilience. They show intrinsic optical transparency and the ability to completely block UV radiation in the range of UV-B and UV-A2, as well as excellent X-ray radiation blocking property. This study opens the possibility for using elastomeric coating and sealant in advanced personal protection equipments for shielding radiations.

• 出版日期2010-7
• 单位华南理工大学