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Rational permeability coefficient of a permeable lining for composite tunnel lining structures
tunneling engineering deeply-buried tunnel composite lining structure concrete permeable lining grouting circle parameter permeability coefficient reasonable value
2018/5/11
Various factors influence the tunneling are simplified considering the axial symmetry of the composite lining structure. The analytical expressions for the seepage field，stress，and displacement in the...
Preparation of Collagen/PVA Composite Fiber
Chrome Shavings Collagen Composite Fiber Grafting Modification Poly(Vinyl Alcohol) (PVA)
2011/12/15
Alkali was used to extract collagen from chrome shavings. Grafting modification of collagen was carried out with acrylic ester as grafting monomers. The structure of the product was characterized usin...
Synthesis, Characterization and Performance of Ce0.8La0.2O1.9-ATP Composite Catalyst for Phenol Catalytic Oxidation
Catalytic Activity Ce0.8La0.2O1.9-ATP Co-Precipitation Nano Composite
2011/11/22
Ce0.8La0.2O1.9-attapulgite (Ce0.8La0.2O1.9-ATP) nanocomposite materials were synthesized by co-precipitation method. The microstructure and phase composition of the as-prepared samples were characteri...
Synthesis of Vinyl Polymer/ ZnO Nano Composite and its Application in Leather Tanning Agent
Leather Tanning Agent Nano Zno Composite Vinyl Polymer
2011/12/14
Vinyl polymer (dimethyl diallyl ammonium chloride /acrylic acid/2-hydroxyethyl acrylate/acrylamide) was synthesized via free radical polymerization, and then vinyl polymer/zinc oxide nano composite (P...
Preparation of Nano-TiO2/Fly Ash Beads Composite Material and Photocatalytic Properties
Composite Fly Ash Bead Hydrolysis Nano-TiO2 Photocatalytic
2011/11/14
Using TiCl4 as the titanium source, urea as the precipitating agent, nano-TiO2/fly ash beads composite materials were prepared by hydrolysis-precipitation method. The materials were characterized by S...
Research on Photocatalysis Properties of Nano TiO2/Mica Composite Material Prepared by the Method of Hydrolysis–Precipitation
Composite Material Hydrolysis – Precipitation Photocatalyst TiO2/M
2011/11/14
Using muscovite as the carrier, TiCl4 as the source of titanium, urea as the precipitating agent, nano-TiO2/mica photocatalyst (TiO2/M) was prepared by the method of hydrolysis–precipitation. The as -...
Preparation of Environment-Friendly Composite from Waste Paper Fiber and Waste Collagen
Composite Waste Collagen Waste Newspaper Fiber
2011/12/15
Waste newspaper fiber was filled in the collagen cross-linked by glutaraldehyde. The effects of deinking fiber, glycerol dosage, glutaraldehyde dosage on the mechanical properties of composite were in...
Preparation and Characterization of N Doped TiO2/ Sepiolite Composite Materials
Modification Photocatalytic Speiolite Titanium Dioxide
2011/11/22
Nitrogen doped TiO2/sepiolite composite materials (N-TiO2/sep) with different nitrogen contents were prepared by a sol-gel method and characterized by X-ray diffraction (XRD), scanning electron micros...
Composite Hydrogel Beads Based on Chitosan and Laponite: Preparation, Swelling, and Drug Release Behaviour
chitosan Laponite composite drug release Ofloxacin
2011/12/14
Biopolymer/layered silicate composites have shown unique advantages and potentials for the passive targeting of drugs because they can overcome the burst drawbacks of organic carrier, increase the dru...
Study on the Preparation and Properties of Collagen Fiber- Polyurethane Composite Film
Collagen Fiber Composite Film Composite Material Polyurethane
2011/12/15
Chrome-tanned collagen fiber is the major solid waste of leather industry which is difficult to biological degradation and would caused serious pollution to the environment. However, the collagen fibe...
Rapid removal of Pb(II) from aqueous solution by chitosan-g-poly(acrylic acid)/attapulgite/sodium humate composite hydrogels
composite hydrogels adsorption Pb(II) attapulgite sodium humate
2011/10/10
A series of novel granular chitosang-poly(acrylic acid)/attapulgite/sodium humate (CTSg-PAA/APT/SH) composite hydrogels were successfully prepared by one-step free radical graft polymerization and app...
Synthesis and enhanced swelling properties of a guar gum-based superabsorbent composite by the simultaneous introduction of styrene and attapulgite
Superabsorbent Guar gum Attapulgite Styrene Swelling
2011/12/13
In current study, a series of novel guar gum-graftpoly(sodium acrylate-co-styrene)/attapulgite (GG-g-P(NaAco-St)/APT) superabsorbent nanocomposites were prepared by the simultaneous graft copolymeriza...
A pH-Sensitive Composite Hydrogel Based on Sodium Alginate and Medical Stone:Synthesis, Swelling, and Heavy Metal Ions Adsorption Properties
composite hydrogel sodium alginate medical stone swelling adsorption pH-sensitivity
2011/12/14
New pH-sensitive composite hydrogels were synthesized by free-radical graft copolymerization among sodium alginate (NaAlg), sodium acrylate (NaA), and medical stone (MS). Fourier transform infrared sp...
The Impact Properties of a Polyurethane Composite Filled with Clay
Clay Mechanical Test PU
2011/11/22
A polyurethane/clay (PU/clay) composite was synthesized. The microstructure of the composite was examined by scanning electron microscopy. The impact properties of the composite were characterized by ...
Synthesis, swelling and responsive properties of a new composite hydrogel based on hydroxyethyl cellulose and medicinal stone
A. Polymer-matrix composites (PMCs) D. Thermal analysis
2011/12/13
In this study, a series of pH- and saline-responsive composite hydrogels were prepared by a facile freeradical graft copolymerization amongst hydroxyethyl cellulose (HEC), sodium acrylate (NaA) and me...