scholarly journals Synthesis of CA6/AlON Composites with Enhanced Slag Resistance

2021 ◽  
Author(s):  
Yunsong Liu ◽  
Enhui Wang ◽  
Linchao Xu ◽  
Tao Yang ◽  
Xinmei Hou ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Test Method ◽  
Slag Resistance ◽  
Step Method ◽  
Reaction Test ◽  
One Step ◽  
Two Phases

Abstract Aiming to improve the slag resistance of calcium hexaaluminate (CA6), different amounts of AlON have been introduced into CA6 using two approaches, i.e. one-step and two-step methods. The results show that both the two phases of CA6 and AlON are uniformly distributed when sintered at 1650 °C for 2 h in flowing nitrogen using two-step method. The optimized amount of AlON addition is determined to be 10 wt%. In addition, the reaction test method is performed and CA6/AlON composite exhibits much better slag penetration and corrosion resistance compared with pure CA6. The effect of AlON is also discussed.

scholarly journals One-Step Preparation of Hyperbranched Polyether Functionalized Graphene Oxide for Improved Corrosion Resistance of Epoxy Coatings

Coatings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 844 ◽  
Author(s):  
Xuepei Miao ◽  
An Xing ◽  
Lifan He ◽  
Yan Meng ◽  
Xiaoyu Li
Keyword(s):  
Corrosion Resistance ◽  
Graphene Oxide ◽  
Acid Resistance ◽  
Epoxy Coating ◽  
Functionalized Graphene ◽  
Step Method ◽  
Epoxy Coatings ◽  
Functionalized Graphene Oxide ◽  
One Step ◽  
Hyperbranched Polyether

In this paper, hyperbranched polyether functionalized graphene oxide (EHBPE-GO) was prepared by a facile one-step method. Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), thermogravimetric analyzer (TGA), and trans-mission electron microscopy (TEM) results confirmed the formation of EHBPE-GO. Then, EHBPE-GO was cured with phenolic amides at room temperature to prepare epoxy coatings. The corrosion resistance of epoxy coatings was investigated systematically by using electrochemical and traditional immersion methods. Results show that a small amount of EHBPE-GO (8 wt % of Diglycidyl ether of bisphenol A (DGEBA)) in epoxy coating achieves 50% higher improvement in acid-resistance than unmodified neat DGEBA resin. For the nanocomposite epoxy coating, the superior acid-resistance is attributed to the increased crosslink density and the impermeable 2D structure of EHBPE-GO. This work provides a facile strategy to develop the effective improved corrosion resistance nanofiller for epoxy coating.

scholarly journals Preparation of Degradable Superhydrophobic Mg/P/Z/F/H Composite Materials and Their Anticorrosion

2021 ◽  
Author(s):  
Zhongxian Xi ◽  
Chengqing Yuan ◽  
Xiuqin Bai ◽  
Chun Wang ◽  
Anne Neville
Keyword(s):  
Corrosion Resistance ◽  
Composite Materials ◽  
Magnesium Alloys ◽  
The Self ◽  
Heating Process ◽  
Good Adhesion ◽  
Step Method ◽  
One Step ◽  
Self Cleaning ◽  
Poly Caprolactone

In this study, the degradable superhydrophobic Mg/P/Z/F/H (magnesi-um/poly(-caprolactone)/zinc oxide/1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES)/ heating process) composite materials were prepared through one-step method for enhancing the corrosion resistance of AZ91D magnesium alloys. Electrochemical measurements showed that Mg/P/Z/F/H materials significantly improved the corrosion resistance of magnesium alloys in 3.5 wt.% NaCl. The self-cleaning, adhesion and stability tests suggested that Mg/P/Z/F/H composite materials had well self-cleaning properties, good adhesion strength and stability in wet atmosphere.

Effect of Dynamic Crosslinking on Mechanical Properties of PP/EPDM Blends

1993 ◽  
Vol 58 (11) ◽  
pp. 2642-2650 ◽  
Author(s):  
Zdeněk Kruliš ◽  
Ivan Fortelný ◽  
Josef Kovář
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Shear Modulus ◽  
High Impact ◽  
Necessary Condition ◽  
Step Method ◽  
Melt Mixing ◽  
One Step ◽  
High Impact Strength ◽  
Dynamic Curing

The effect of dynamic curing of PP/EPDM blends with sulfur and thiuram disulfide systems on their mechanical properties was studied. The results were interpreted using the knowledge of the formation of phase structure in the blends during their melt mixing. It was shown, that a sufficiently slow curing reaction is necessary if a high impact strength is to be obtained. Only in such case, a fine and homogeneous dispersion of elastomer can be formed, which is the necessary condition for high impact strength of the blend. Using an inhibitor of curing in the system and a one-step method of dynamic curing leads to an increase in impact strength of blends. From the comparison of shear modulus and impact strength values, it follows that, at the stiffness, the dynamically cured blends have higher impact strength than the uncured ones.

One-step plasma deposited thin SiO x C y films for corrosion resistance of low carbon steel

2020 ◽  
pp. 1-19
Author(s):  
Alaa Fahmy ◽  
Mansour El Sabbagh ◽  
Mahmoud Bedair ◽  
Amr Gangan ◽  
Mohsen El-Sabbah ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
One Step

Bismuth particles imbedded degradable nanohydrogel prepared by one-step method for tumor dual-mode imaging and chemo-photothermal combined therapy

2019 ◽  
Vol 375 ◽  
pp. 122000 ◽  
Author(s):  
Yang Xuan ◽  
Xian-Lin Song ◽  
Xiao-Quan Yang ◽  
Ruo-Yun Zhang ◽  
Zi-Yu Song ◽  
...  
Keyword(s):  
Combined Therapy ◽  
Dual Mode ◽  
Step Method ◽  
One Step

scholarly journals Bio-Based Polyurethane Networks Derived from Liquefied Sawdust

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3138
Author(s):  
Kamila Gosz ◽  
Agnieszka Tercjak ◽  
Adam Olszewski ◽  
Józef Haponiuk ◽  
Łukasz Piszczyk
Keyword(s):  
Biomass Conversion ◽  
Structural Features ◽  
Mechanical Analysis ◽  
Process Efficiency ◽  
Hydroxyl Number ◽  
Step Method ◽  
One Step ◽  
Liquefaction Process ◽  
The Fourier Transform ◽  
Liquefaction Temperature

The utilization of forestry waste resources in the production of polyurethane resins is a promising green alternative to the use of unsustainable resources. Liquefaction of wood-based biomass gives polyols with properties depending on the reagents used. In this article, the liquefaction of forestry wastes, including sawdust, in solvents such as glycerol and polyethylene glycol was investigated. The liquefaction process was carried out at temperatures of 120, 150, and 170 °C. The resulting bio-polyols were analyzed for process efficiency, hydroxyl number, water content, viscosity, and structural features using the Fourier transform infrared spectroscopy (FTIR). The optimum liquefaction temperature was 150 °C and the time of 6 h. Comprehensive analysis of polyol properties shows high biomass conversion and hydroxyl number in the range of 238–815 mg KOH/g. This may indicate that bio-polyols may be used as a potential substitute for petrochemical polyols. During polyurethane synthesis, materials with more than 80 wt% of bio-polyol were obtained. The materials were obtained by a one-step method by hot-pressing for 15 min at 100 °C and a pressure of 5 MPa with an NCO:OH ratio of 1:1 and 1.2:1. Dynamical-mechanical analysis (DMA) showed a high modulus of elasticity in the range of 62–839 MPa which depends on the reaction conditions.

Discussion on Repair Method of Concrete Highway Pavement

2013 ◽  
Vol 321-324 ◽  
pp. 209-212
Author(s):  
Chun Yan Xia
Keyword(s):  
Mechanical Properties ◽  
Preparation Program ◽  
Step Method ◽  
Concrete Technology ◽  
Concrete Material ◽  
Repair Method ◽  
Ordinary Concrete ◽  
One Step ◽  
Highway Pavement

nfluences on properties of the concrete highway pavement were analyzed in this paper, and the optimal formulation materials were gotten to use in the repair of used-broken cement blocks in the experiment. Polyurethane concrete material was prepared, combing the ordinary concrete technology with one-step method of the synthesis of polyurethane hard bubble, and then its mechanical properties of the relevant parameters were measured to determine the optimal preparation program. The results show that the polyurethane concrete also has sufficiently good mechanical properties while it has the characteristic of fast patching.

A novel, one-step method for the conversion of primary alcohols into carbamate-protected amines

2002 ◽  
Vol 43 (21) ◽  
pp. 3887-3890 ◽  
Author(s):  
Michael R. Wood ◽  
June Y. Kim ◽  
Kathy M. Books
Keyword(s):  
Primary Alcohols ◽  
Step Method ◽  
One Step
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