Surface properties of superfine alumina trihydrate after surface modification with stearic acid

Liu, Guihua; Zhou, Bohao; Li, Yunfeng; Qi, Tiangui; Li, Xiaobin

doi:10.1007/s12613-015-1104-0

Cited by 14 publications

(9 citation statements)

References 14 publications

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“…The volume of deionized water and benzene used for the experiments were both 6 mL. After shaking the mixture of oil and water in the In Figure 2d-f, the CAs of the as-prepared copper sheets that were modified with SA were measured to be 94.5 • , 100.2 • , and 110.5 • , respectively, which showed that the copper sheets became a hydrophobic surface after modification with SA [48] and it was consistent with the research of Gui-Hua et al [49]. It can be seen that as the L 0 of copper sheets modified with SA decreased, the CAs increased.…”

Section: Oil-water Separation Performancesupporting

confidence: 87%

Hydrophobic and Anti-Fouling Performance of Surface on Parabolic Morphology

Liu

Yang

Chen

et al. 2020

IJERPH

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The hydrophobicity and anti-fouling properties of materials have important application value in industrial and agricultural production and people's daily life. To study the relationship between the unit width L 0 of the parabolic hydrophobic material and the hydrophobicity and anti-fouling properties, the rough surface structure of the parabolic with different widths was prepared by grinding with different SiC sandpapers, and further, to obtain hydrophobic materials through chemical oxidation and chemical etching, and modification with stearic acid (SA). The morphology, surface wetting and anti-fouling properties of the modified materials were characterized by SEM and contact angle measurement. The oil-water separation performance and self-cleaning performance of the materials were explored. The surface of the modified copper sheet forms a rough structure similar to a paraboloid. When ground with 1500 grit SiC sandpaper, it is more conducive to increase the hydrophobicity of the copper sheet surface and increase the contact angle of water droplets on the copper surface. Additionally, the self-cleaning and anti-fouling experiments showed that as L 0 decreases, copper sheets were less able to stick to foreign things such as soil, and the better the self-cleaning and anti-fouling performance was. Based on the oil-water separation experiment of copper mesh, the lower L 0 has a higher oil-water separation efficiency. The results showed that material with parabolic morphology has great self-cleaning, anti-fouling, and oil-water separation performance. The smaller the L 0 was, the larger the contact angle and the better hydrophobic performance and self-cleaning performance were.

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Section: Oil-water Separation Performancesupporting

confidence: 87%

Hydrophobic and Anti-Fouling Performance of Surface on Parabolic Morphology

Liu

Yang

Chen

et al. 2020

IJERPH

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“…Taking into account the relatively high value of elongation at break, hardness, and impact strength, one assumed that the next steps of this experiment, which includes surface modifications of nanofillers, would concern the concentration of 5 mass% of the nanofiller in the polymer matrix. Therefore, in the second stage of work, the halloysite nanofiller was modified in order to improve mechanical properties and to improve the compatibility of the components [47][48][49]. HNTs have been modified following the procedure described in [50], by introducing into the nanofiller a natural substance, which is a mixture of proteins and peptides (i.e., a gelatin).…”

Section: Preparation Of Polymer Nanocomposites Containing Mineral Nanmentioning

confidence: 99%

Preparation and Characterization of Hybrid Nanocomposites for Dental Applications

et al. 2019

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The study involved research related to the selection of the material with improved functional properties that can be used for dental prostheses. An innovative system of nanofillers, that differ in shape, by means of gelatin-modified halloysite nanotubes (HNTs-g) along with silane-coupled aluminum trihydrate (ATH-sil) was prepared, in order to observe a synergistic improvement of acrylic material (methyl methacrylate with methyl methacrylate monomer (MM/mMM)). Selected mechanical properties of manufactured nanocomposites, along with utilitarian properties, like hardness, buffer solution absorption, and abrasion resistance, along with a fall test from the height of finished products have been discussed. Moreover, the study of the biofilm formation on the surface of dental prostheses confirmed the occurrence of a synergistic improvement of properties and the legitimacy of using modified mineral nanofillers in the form of a hybrid system.

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“…The formation of a micro-rough film surface structure is necessary for the diffuse light-scattering for creating the visual effect of reduced gloss [32,33]. It is important to mention that, ATH has a hydrophilic surface which results in poor interfacial compatibility and particle agglomeration in a polymeric matrix [34], and this would tend to make the ATH particles rise, during the melt-flow process (the first stage in the curing process), to the top-surface zone of the film and thus make some of them partially embedded in the films, as shown in Figure 6b. Besides, ATH powder has a relatively high oil absorption of 28 g oil/100 g in contrast to other popular fillers, such as blanc fixe (BaSO 4 ) and lithopone (ZnS·BaSO 4 ), which have much lower oil absorption of 11-17 g oil/100 g and 11-14 g oil/100 g. Generally, the higher the oil absorption value of the filler, the higher the filler's surface area and the more binder it will require to bind it.…”

Section: Effect Of Ath On the Specular Gloss Of The Filmsmentioning

confidence: 99%

Investigation of the Performance of ATH Powders in Organic Powder Coatings

Franco

Yang

et al. 2019

Coatings

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Aluminum trihydrate (ATH) is one of the most widely used fillers in solvent-borne coatings and polymer industries. To investigate its performance in powder coatings, four different pigment to binder ratios (P/B) were used in respect to different ATH concentrations in four most widely used resin systems (epoxy, epoxy-polyester, polyurethane and polyester). The angle of repose (AOR) and specific gravity of powder paints increase accordingly with ATH concentration. The mechanical properties, corrosion and UV resistance performances of coating films are enhanced or only slightly decreased with the addition of ATH. Pencil scratch hardness increase significantly with the increase of ATH content. Impact resistance decreases within 5% of the initial resistance at the maximum ATH loading. There is a slightly decrease in corrosion resistance performances of less than 2 mm of failure at scribe in all formulations. The incorporation of ATH has slight effect on the UV resistance performance of all the samples. Moreover, the matting effect of ATH is observed for all the resin systems, especially epoxy, with the specular gloss decreasing more than 70% at P/B of 0.75.

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Surface properties of superfine alumina trihydrate after surface modification with stearic acid

Cited by 14 publications

References 14 publications

Hydrophobic and Anti-Fouling Performance of Surface on Parabolic Morphology

Hydrophobic and Anti-Fouling Performance of Surface on Parabolic Morphology

Preparation and Characterization of Hybrid Nanocomposites for Dental Applications

Investigation of the Performance of ATH Powders in Organic Powder Coatings

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