Coatings
·
2022
·Vol. 12
·期 10
·1406
·
IF 3.236
Yuxing Bai,Xuliang Jin,Junqing Xie,Xiao Lv,Tingting Guo,Li Zhang,Jesse Zhu,Yuanyuan Shao,Haiping Zhang,Hui Zhang,Bin Yuan,Aiming Yin,Jinfeng Nie,Fan Cao,Zhengjun Xu
In the study, a conductive polypyrrole (PPy) is deposited on the lamellar sericite powder (SCP) surfaces by an in situ oxidization growth method and the prepared PPy/SCP conductive additive is successfully applied on the zinc-rich primer (ZRP) coating. The equal mass substitution and the equal volume substitution methods of the conductive additives to zinc dusts are discussed, as well as the optimal replacing ratio to achieve the best corrosion protection effect of the ZRP coatings. The results indicate that the equal volume substitution method is in favor of corrosion resistance of coating film. The salt spray test and the electrochemical impedance spectroscopy (EIS) and polarization curves show that the prepared ZRP coating with a 66% zinc content and replacing ratio of 1:3 possesses the best corrosion-resistant performance and an optimal adhesion strength. The replacement of PPy/SCP particles to zinc dusts using the equal volume substitution method is feasible to achieve the improvement in anticorrosion ability through a synergic function of the cathodic protection effect and barrier effect.
研究领域:
材料科学
·
腐蚀与防护
·
电化学
✓ 已验证
DOI
高影响因子
Coatings
·
2023
·Vol. 13
·期 12
·2071
·
IF 3.4
Ruijuan Sang,Fei Yang
Calcium carbonate (CaCO3) is a widely used inorganic filling pigment used in coatings, and it is known for its nontoxicity, odorlessness, and environmental friendliness. The application of CaCO3as a filler can effectively reduce raw material costs, and optimization of the filler formula enhances the coating film performance. In this study, oak planks were prepared as substrates for water-based inkjet printing. Three composite water-based primers with different TiO2-to-CaCO3ratios and a polyurethane resin primer were used to prepare the substrate for the printing surface. The properties of the water-based primer coating and the water-based inkjet printing coating were characterized and analyzed via Fourier-transform infrared spectroscopy, video-based contact angle analysis, and environmental scanning electron microscopy. The aim was to investigate the effects of the composite waterborne primer coatings on the ink absorption and coloring properties of the interface between wood substrates and waterborne inkjet coatings. Sample WDCC-3#, with a TiO2-to-CaCO3ratio of 15:35, exhibited the most comprehensive characteristics. The wood surface coated with 15 g/m2of the polyurethane resin primer and 15 g/m2of WDCC-3#exhibited a 5.8° contact angle of the water-based ink, first-grade adhesion, 4 H hardness, 70.52 whiteness value, and a roughness of ~2.33. The surface of the printed water-based inkjet-coated substrate was uniform and smooth, featuring rounded and transparent edges of the water-based ink droplets and a small CMYK color difference value. Therefore, the composite waterborne primer, incorporating TiO2and CaCO3in specific ratios, can be effectively combined with waterborne polyurethane primer coatings. This combination significantly improves the interfacial compatibility between the oak surface and waterborne inkjet coatings, leading to enhanced ink absorption on the oak plank surface during printing. This results in a high degree of color reproduction and clearer printed images. Overall, this study provides valuable insights for the development of primer programs for the industrial application of waterborne digital inkjet technology on wood products.Keywords:waterborne primer;calcium carbonate;water-based ink;oak plank;inkjet printing technology
研究领域:
材料科学
·
木材科学与技术
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 5
·850
·
IF 3.164
Yanhua Lei,Zhichao Qiu,Jiurong Liu,Dongdong Li,Ning Tan,Tao Liu,Yuliang Zhang,Xueting Chang,Yanhong Gu,Yansheng Yin
The corrosion behavior of zinc-rich epoxy primers or paints (ZRPs) with different conducting polyaniline-grafted graphene (PANI/Gr) contents was investigated. Conductivity of the formed PANI/Gr nanosheets was significantly improved by employing the Gr as the inner template to synthesize the PANI. The protective properties and electrochemical behavior of coatings with artificial defects were investigated by monitoring the free corrosion potential versus time and by using localized electrochemical impedance spectroscopy (LEIS). A synergetic enhancement of the physical barrier role of the coating and the zinc sacrificial cathodic protection was achieved in the case of ZRP including PANI/Gr nanosheets. In addition, the ZRP mixed with the PANI/Gr at a content of 0.6% exhibited the best anticorrosion performance across the range of investigated PANI/Gr contents.Keywords:conducting polymer;PANI;LEIS;graphene;corrosion
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Coatings
·
2021
·Vol. 11
·期 11
·1412
·
IF 2.881
Wenbo Li,Yue Jiang,Dingguo Liu,Jiran Zhu,Yi Xie,Lanlan Liu
We aimed to improve the corrosion resistance of transmission network cabinet equipment in high temperature and humidity environment. In this paper, using acid modified acrylic acid as the main component, the composite conversion agent was obtained by adding phosphoric acid phytic acid and other components. Through the surface morphology, electrochemical test and adhesion force test of rust conversion coating, the versatility and corrosion resistance of rust conversion coating on the substrates were analyzed. Combined with zinc phosphate primer, the effect of rust conversion agent on the adhesion and salt spray corrosion resistance of the commercial primers was studied. The composite conversion agent has good effect on atmospheric corrosion rust layer. The corrosion resistance and adhesion force of the atmospheric corrosion rust layer treated with rust conversion agent were significantly increased. The adhesion of zinc phosphate primer on atmospheric corrosion rust coating with rust conversion was three times higher than that of atmospheric corrosion rust coating without rust conversion, respectively. Composite rust conversion agent has broad versatility, which can be used for rust conversion of atmospheric corrosion rust layer. At the same time, it has a good corrosion resistance, that can obviously improve the corrosion potential of the corroded surface and reduce the corrosion current density. In addition, the composite rust conversion agent can significantly improve the adhesion and corrosion resistance of the primer coating.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 6
·591
·
IF 2.935
Jingrong Liu,Tao Liu,Zhangwei Guo,Na Guo,Yanhua Lei,Xueting Chang,Yansheng Yin
The effect of single-layer graphene sheets (Gr) on the corrosion protection of zinc-rich epoxy primers (ZRPs) was investigated. Scanning electron microscopy (SEM) with an energy dispersive spectrometer (EDS) were used to characterize morphology and composition of the coatings after immersion for 25 days. The cross-sectional SEM images and X-ray photoelectron spectroscopy (XPS) confirmed that the addition of single-layer graphene facilitated assembling of zinc oxides on the interface between the coating and the steel. The open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) measurements revealed that both the cathodic protection and barrier performance of the ZRP were enhanced after addition of 0.6 wt. % Gr (Gr0.6-ZRP). In addition, the cathodic protection property of the Gr0.6-ZRP was characterized quantitatively by localized electrochemical impedance spectroscopy (LEIS) in the presence of an artificial scratch on the coating. The results demonstrate that moderate amounts of single-layer graphene can significantly improve corrosion resistance of ZRP, due to the barrier protection and cathodic protection effects.Keywords:graphene;zinc-rich epoxy primer;cathodic protection;localized electrochemical impedance spectroscopy
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2018
·Vol. 165
·期 13
·C878
·
IF 3.662
Jingrong Liu,Yanhua Lei,Zhichao Qiu,Dongdong Li,Tao Liu,Fen Zhang,Shibin Sun,Xueting Chang,Runhua Fan,Yansheng Yin
The mechanism of polyaniline-grafted Graphene (PANI-Gr) nanosheets on the corrosion performance of zinc-rich epoxy primer (ZRP) coatings was studied. Highly crystalline PANI nanosheets were chemically synthesized on the modified Gr nanosheets and analyzed using Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy and high-resolution transmission electron microscopy (HR-TEM). Different from the whole coating measurements via the open circuit potential and electrochemical impedance spectroscopy (EIS) measurements, herein, we focused on the corrosive characteristics at defect areas. Potential changes of the artificial defect-included samples and localized EIS of the defect area were conducted, to investigate the impact of the PANI-Gr fragments on corrosion process. The electrochemical results indicated that a mixture of Gr at a content of 0.6% enhanced the sacrificial cathodic protection of ZRP coating due to extending its active sacrificial period. Further, the most pronounced improvement in the ZRP properties was obtained through PANI-Gr modification. A synergetic enhancement of the coating physical barrier and zinc sacrificial cathodic protection was obtained in the case of ZRP including PANI-Gr nanosheets. Thus, this study suggests a new strategy for simultaneously providing the enhanced cathodic and barrier protection activities for ZRP.
研究领域:
材料科学
·
电化学
·
防腐蚀工程
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 19
·4735
·
IF 4.2
Zhen Tang,Pengjiao Zu,Baiyi Chen,Xianhui Zhang,Jianfeng Lan,Jiaxun Zhang,Hao Zhang,Baoxin Wang,Li Ma,Jianhua Wu
Ultrasonic technology has drawn extensive interests for its great potential in marine antifouling applications. However, its effects on the adhesion behavior of marine fouling organisms on marine structures remain underexplored. This work investigated how ultrasonic treatment impacted the adhesion ofPseudoalteromonason a gel-like marine epoxy primer. And the process parameters for ultrasonic treatment were optimized using response surface analysis with Design-Expert software 11. The results revealed that ultrasonic treatment disrupted the cellular structure ofPseudoalteromonas, causing the deformation and fragmentation of the cell membrane, leading to bacterial death. Additionally, ultrasonic treatment reduced the particle size and Zeta potential value ofPseudoalteromonas, which disrupted the stability of bacterial suspensions. It also increased the relative surface hydrophobicity ofPseudoalteromonascells, resulting in a reduction in adhesion to the gel-like marine epoxy primer. This study demonstrated that ultrasonic treatment significantly disturbed the adhesion behavior of microorganisms likePseudoalteromonason the gel-like marine epoxy primer, which provided an effective approach for controlling marine biofouling.
研究领域:
海洋生物学
·
材料科学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2022
·
IF 4.432
Xiaoting Li,Yinyu Zhang,Gaoming Li,Xiuli Zhao,Yeping Wu
Adhesive protein secreted by marine mussel have strong wet adhesion on various surfaces, which inspires the research of catechol-functional polymer to develop green surface treatment agent and excellent adhesives materials. Herein, we designed a green and simplified route to synthesis epoxy dopamine polymer (EP-DA) containing the structure of L-3,4-dihydroxyphenylalanine (DOPA) in mussel adhesive protein through epoxy-amine ring opening reaction as a new surface treatment agent. The enhanced adhesion properties of the surface primer before and after thermal annealing treatment (130 °C for 6 h under vacuum) were investigated both at dry and hot/wet conditions. The lap shear strength of EP-DA coated stainless steel (SS) increased from 9.72 MPa to 13.26 MPa compared with untreated substrates, and further increased to 20.02 MPa after EP-DA thermal annealing treatment (EP-DA-an). Moreover, the adhesion strength of EP-DA-an treated SS maintained as high as 16.45 MPa after immersed in water at 50 °C for 40 days, while the adhesion strength of untreated and EP-DA treated SS dropped to nearly zero. For the first time, it was proved that the annealing treatment and DA structure have a significant synergistic effect on the improvement of the hygrothermal ageing resistance of adhesion, indicating that EP-DA polymer can be used as an excellent primer for adhesion.
研究领域:
材料科学
·
生物仿生学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 10
·2361
·
IF 5
Ting Pan,Zhenhua Su,Yue Yan,Xiaofei Zhu,Fan Qi,Lianbin Wu
As a bridge between the coating and the substrate, the primer has a direct impact on the adhesion performance of silicone resin thermal protection coating. In this paper, the synergistic effects of an aminosilane coupling agent on the adhesion performance of silane primer were investigated. The results show that silane primer containing N-aminoethyl-3-aminopropylmethyl-dimethoxysilane (HD-103) formed a continuous and uniform film on the surface of the substrate. Two amino groups of HD-103 were conducive to moderate and uniform hydrolysis of the silane primer system, and the introduction of dimethoxy groups was more conducive to the improvement of interfacial layer density and the formation of the planar surface structure, thus enhancing the bond strength at the interface. When the content was 13 wt%, it exhibited excellent synergistic effects on adhesive properties, and the adhesive strength reached 1.53 MPa. The possible morphology and composition of the silane primer layer were investigated by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). A thermogravimetric infrared spectrometer (TGA-IR) was used to analyze the thermal decomposition of the silane primer layer. The results showed that the alkoxy groups in the silane primer were first hydrolyzed to form Si-OH, and then the dehydration and condensation reactions between Si-OH and the substrate formed a firm network structure.Keywords:aminosilane coupling agent;synergistic effects;silane primer;adhesion property;silicone resin thermal protection coating
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF DENTISTRY
·
2025
·
IF 5.5
Bing Liang,Xiaolu Chen,Yi Sun,Xinni Pan,Ye Lin,Qi Gao,Ling Zhang,Yuedan Xu
Objectives This study introduced the prime-and-rinse approach with an methacryloyloxydecyl dihydrogen phosphate (MDP)-containing primer to augment the performance of modified self-etch adhesives loaded with amorphous fluorinated calcium phosphate (AFCP) nanoparticles. Methods The modified self-etch adhesive was acquired by adding 20 wt% AFCP nanoparticles into Clearfil S3 Bond. An experimental primer containing 15 wt% MDP was prepared. The bond performance was assessed through micro-tensile bond strength (MTBS) tests. Additionally, a single-layer collagen model and demineralized dentin were used to investigate mineralization characteristics. Cytotoxicity was evaluated using a modified transwell insert model on human dental pulp stem cells. Results The incorporation of AFCP nanoparticles into the Clearfil S3 Bond led to a significant reduction in MTBS. While the application of MDP primer could improve the bond performance of modified Clearfil S3 Bond. The MDP primer further augmented the mineralization of single-layer collagen model and demineralized dentin induced by modified self-etched adhesive. The relative cell viability was around 100 % in all groups in the study. Clinical significance These results indicated that the prime-and-rinse approach with MDP primer not only compensated for the reduced bond strength caused by the incorporation of AFCP nanoparticles but also enhanced mineralization capabilities and maintained biocompatibility, offering a promising strategy for improving the longevity of dental restorations.
研究领域:
牙科学
·
材料科学
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2020
·
IF 0
Ya Liu,Li Wang,Hongsheng Lu,Zhiyu Huang
The increasing discharge of oily wastewater and frequent oil spill accidents pose a great threat to our environment and cause a great waste of valuable resources. However, most existing methods to separate oily water often involve unique equipment and toxic chemicals that hinder their commercial applications. Inspired by the synergy of various additives in commercial paint, we proposed a strategy to fabricate a metal mesh for oil–water separation by using a bicomponent hydrogel paint. This paint consists of an undercoat and a topcoat. Owing to the exceptional adhesion and molecular recognition effect, the paint can show a high binding degree. In addition, the hydrogel paint can decouple polymerization from crosslinking due to the reversible hydrogen bond crosslinking of topcoat, resulting in a separation of labor between paint makers and paint users. The rough as-prepared metal mesh with hydrophilic hydrogel and micropapillaes result in an excellent underwater superhydrophobicity and low oil-adhesion characteristics. This mesh can display high stability and durability under various complex conditions and successfully remove water from various oil/water mixtures and exhibit a high separation efficiency (above 99%). We believe that even ordinary people without professional training can also prepare an efficient oil/water separation mesh easily through brushing the bicomponent hydrogel paint. Consequently, the bicomponent hydrogel paint could be an attractive commercial paint to fabricate oil/water separation mesh.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 6
·1-9
·
IF 2.8
liu Yulei,Qi Haichao,Liu Changfeng,Li Chao,Zhao Xinke,Hou Jingbin,Li Liangbin
Electroless plating is a promising method to achieve material surface metallization, low rupture work of plated coating and complex production processes have become important factors that restrict its progress. In this study, a facile method combined with primer modification (mixture of SiO 2 particle and resin) and electroless deposition to fabricate a high-adhesion Cu-plated coating is demonstrated. Results showed that poly(ethylene terephthalate) (PET) modified with primer could absorb Ag + through the coordination effect because hydrophilic groups (–OH and –NH 2 ) were possibly used as a bridge for chemisorbing of rare metal ions (Ag + ) through ion exchange, which acted as a catalyst for the deposition of Cu coating on its surface. More importantly, introducing SiO 2 particles in the primer can improve surface roughness, which is enhanced from 0.643 to 0.829 μm of modified coating, result in the improvement of substrate/deposited coating contact area, which would facilitate the enhancement of the adhesion behavior of plated coating. The deposition of bead-like structure Cu coating on primer-modified PET surface with a higher average roughness value possessed excellent electrical property, adhesion and crystallization. The resistivity of the copper patterns is approximately 9.81 × 10 −6 Ω·cm. It is promising to integrate this kind of metal material with excellent performance in future flexible devices.
研究领域:
表面工程
·
材料科学
·
电化学
·
纳米技术
·
高分子科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）