• 主页
  • 查找结果
  • Self-cleaning and mechanical properties of modified white cement with nanostructured TiO2.

Self-cleaning and mechanical properties of modified white cement with nanostructured TiO2.

Journal of nanoscience and nanotechnology (2013-08-02)
R Khataee, V Heydari, L Moradkhannejhad, M Safarpour, S W Joo
摘要

In the present study, self-cleaning and mechanical properties of white Portland cement by addition of commercial available TiO2 nanoparticles with the average particle size of 80 nm were investigated. X-ray diffraction (XRD), transmission electron microscopy (TEM) and BET were used to characterize TiO2 nanoparticles. For determination of self-cleaning properties of TiO2-modified white cement, colorimetric tests in decolorization of C.I. Basic Red 46 (BR46) in comparison to unmodified cement samples was applied. The results indicated that with increasing the amount of TiO2 nanoparticles in modified cement, self-cleaning property of the samples increased. The mechanical properties of TiO2-modified and unmodified cement samples, such as time of setting of hydraulic cement, compressive strength of hydraulic cement mortar and flexural strength of hydraulic cement mortar were examined. The results indicated that addition of TiO2 nanoparticles up to maximum replacement level of 1.0% improved compressive and flexural strength and decreased its setting time.

材料
货号
品牌
产品描述

Sigma-Aldrich
二氧化钛(IV), nanopowder, 21 nm primary particle size (TEM), ≥99.5% trace metals basis
Sigma-Aldrich
氧化钛 (IV),锐钛矿, nanopowder, <25 nm particle size, 99.7% trace metals basis
Sigma-Aldrich
二氧化钛(IV), ReagentPlus®, ≥99%
Sigma-Aldrich
氧化钛 (IV),锐钛矿, powder, 99.8% trace metals basis
Sigma-Aldrich
钛 (IV) 氧化物,金红石型, powder, <5 μm, ≥99.9% trace metals basis
Sigma-Aldrich
氧化钛 (IV),锐钛矿, powder, −325 mesh, ≥99% trace metals basis
Sigma-Aldrich
氧化钛(IV),金红石和锐钛矿混合物, nanopowder, <100 nm particle size (BET), 99.5% trace metals basis
Sigma-Aldrich
钛 (IV) 氧化物,金红石型, nanopowder, <100 nm particle size, 99.5% trace metals basis
Sigma-Aldrich
二氧化钛(IV), puriss., meets analytical specification of Ph. Eur., BP, USP, 99-100.5%
Sigma-Aldrich
钛, foil, thickness 0.127 mm, 99.7% trace metals basis
Sigma-Aldrich
钛, powder, <45 μm avg. part. size, 99.98% trace metals basis
Sigma-Aldrich
钛, foil, thickness 0.25 mm, 99.7% trace metals basis
Sigma-Aldrich
氧化钛(IV),金红石和锐钛矿混合物, nanoparticles, <150 nm particle size (volume distribution, DLS), dispersion, 40 wt. % in H2O, 99.5% trace metals basis
Sigma-Aldrich
钛, powder, −100 mesh, 99.7% trace metals basis
Sigma-Aldrich
钛 (IV) 氧化物,金红石型, ≥99.98% trace metals basis
Sigma-Aldrich
钛 (IV) 氧化物,金红石型, 99.995% trace metals basis
Sigma-Aldrich
钛, sponge, 3-19 mm, 99.5% trace metals basis
Sigma-Aldrich
钛, wire, diam. 0.25 mm, 99.7% trace metals basis
Sigma-Aldrich
钛, foil, thickness 0.025 mm, 99.98% trace metals basis
Sigma-Aldrich
氧化钛(IV),金红石和锐钛矿混合物, nanoparticles, <100 nm particle size, dispersion, 48-52 wt. % in xylene, 99.9% trace metals basis
Sigma-Aldrich
钛, nanoparticles, dispersion, <100 nm particle size, in mineral oil, 98.5% trace metals basis
Sigma-Aldrich
二氧化钛(IV), contains 1% Mn as dopant, nanopowder, <100 nm particle size (BET), ≥97%
Sigma-Aldrich
钛, sputtering target, diam. × thickness 2.00 in. × 0.25 in., 99.995% trace metals basis
Sigma-Aldrich
钛, foil, thickness 0.5 mm, 99.99% trace metals basis
Sigma-Aldrich
钛, foil, thickness 0.25 mm, 99.99% trace metals basis
Sigma-Aldrich
氧化钛(IV),金红石和锐钛矿混合物, nanoparticle, <250 nm particle size (DLS), paste, 53-57 wt. % in diethylene glycol monobutyl ether/ethylene glycol, 99.9% trace metals basis
Sigma-Aldrich
钛, foil, thickness 2.0 mm, 99.7% trace metals basis
Sigma-Aldrich
钛, wire, diam. 0.81 mm, 99.7% trace metals basis
Sigma-Aldrich
钛, evaporation slug, diam. × L 6.3 mm × 6.3 mm, ≥99.99% trace metals basis
Sigma-Aldrich
钛, wire, diam. 1.0 mm, 99.99% trace metals basis