Coatings
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2017
·Vol. 7
·期 8
·117
·
IF 2.175
Wenjing Xia,Nianqing Zhu,Rongjie Hou,Wengui Zhong,Mingqing Chen
The polyurethane prepolymer terminated with a double bond was synthesized using isophorone diisocyanate (IPDI), hydroxyl terminated polybutadiene (HTPB), 1,4-butanediol (BDO), and 2-hydroxyethyl acrylate (HEA). Then, a series of innovative UV-curable polyurethane coatings were prepared by blending ene-terminated polyurethane, fluoroacrylate monomer, and multifunctional thiol crosslinker upon UV exposure. The incorporation of fluoroacrylate monomer and multifunctional thiols into polyurethane coatings significantly enhanced the hydrophobic property, mechanical property, pencil hardness, and glossiness of the polyurethane coatings. This method of preparing UV crosslinkable, hydrophobic polyurethane coatings based on thiol-ene chemistry exhibited numerous advantages over other UV photocuring systems.Keywords:polyurethane;fluorine-containing;UV-crosslinkable
研究领域:
材料科学
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化学工程
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DOI
高影响因子
AIP Advances
·
2024
·Vol. 14
·期 3
·
IF 1.4
Quan Jingru,Dong Tienan,Shi Zixin,Xv Boqiang,Hu Hengming,Hao Shijie,Fan Haojie,Huang Xinyi,Fan Minmin,Cheng Qichen,Hang Zusheng
The instability of UV anti-corrosion coatings poses a significant threat to both air quality and the environment, highlighting the urgent need for efficient and eco-friendly anti-corrosion coatings. In this study, we synthesized a novel material, MXene, known for its well-defined layered structure and exceptional conductivity, by employing a MAX phase etching process. Our investigation encompassed the assessment of MXene’s compatibility within UV coating systems, as well as its dispersion and stability within composite coating systems. We observed that MXene’s substantial specific surface area and robust chemical adsorption capabilities played pivotal roles in the adsorption and stabilization of nanoparticles within the UV coating. Further exploration of MXene-based UV-curable anti-corrosion coatings revealed remarkable resistance to hydrogen-induced corrosion due to MXene’s outstanding electrical conductivity and its ability to regulate surface chemical reactions. This optimization not only enhances UV-curing and photostability performance in UV anti-corrosion coatings but also makes them highly suitable for producing efficient anti-corrosion coatings. This approach demonstrates broad applicability across various substrates where superior corrosion resistance is essential.
研究领域:
材料科学
·
化学工程
·
表面工程
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产品关联
DOI
高影响因子
DYES AND PIGMENTS
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2023
·
IF 4.5
Jingyu Deng,Ranran Kong,Zhiping Liu,Yuchen Weng,Li-Juan Fan
Epoxy acrylate (EA) is the most widely used prepolymer for an ultraviolet (UV)-curable adhesive. Its colorless and transparent appearance can meet some special application needs, but also bring some problems, such as the position and amount of adhesive cannot be well observed by the naked eye, and so that malposition, shortage, or leakage of adhesive may happen. The UV-curable EA adhesive with UV light-excited fluorescence can be used to locate the adhesive through simple visual observation, but would not interfere with the macroscopic appearance of the glued item under natural light. Here we introduced tetraphenylethylene (TPE), a typic structure having aggregation-induced emission (AIE) effect, into the adhesive system. TPE-modified methacrylate (TPE-MA) monomer was added to UV-curable EA adhesive to participate in the curing process. The concentration of TPE-MA added to the adhesive was optimized to 0.1 % of the amount of EA prepolymer in mol to give blue fluorescence under UV light . By comparing the cured products, we found that the one having TPE-MA to form covalent bonds with other components, has higher fluorescence intensity and better stability than the other one having TPE via simple blending. Finally, tensile lap-shear strength measurement and thermal analysis of the cured products revealed that the addition of a small amount of TPE-MA to the adhesive has no significant effect on the performance of the adhesive. In conclusion, due to the viscosity of the adhesive itself, the intramolecular movement of TPE is restricted even at dilute concentrations, resulting in blue fluorescence. We hope this study can open a new avenue for the preparation of fluorescent adhesives.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Jialong Zhu,Hong Fan,Jintao Wan
Transparent, hard, and flexible multifunctional coatings have a wide range of applications; however, most of them need organic solvents. Here, we present a solvent-free and UV-cured coating made from fluorinated epoxy MTQ silicone resin combined with branched triepoxy siloxane as the reactive diluent. After UV-initiated ring-opening polymerization in the presence of a triarylsulfonium hexafluoroantimonate catalyst, the resultant cured coating exhibits high transparency (∼92%, 550 nm), pencil hardness (7H), and flexibility (1 mm bending diameter) due to the formed organic–inorganic nanostructures in a highly cross-linked network. The triepoxy siloxane significantly reduces the viscosity before curing and increases cross-link density of the coating. The coating without any volatile content shows a smooth surface with low roughness (Rq = 0.46 nm) and delivers an anti-smudge ability owing to perfluorinated chains inherited from the MTQ resin. Furthermore, even after 3000 abrasion cycles, the coating still has a water contact angle greater than 90°, displaying excellent wear resistance. Our work provides a promising way to access high-performance multifunctional coatings in a more sustainable manner.
研究领域:
材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
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2016
·
IF 3.997
Siyu Qiang,Kunlin Chen,Yunjie Yin,Chaoxia Wang
For extending the lifespan of practical applications, a robust and self-healing superhydrophobic cotton fabric was successfully fabricated by facile dip coating and UV curing. The low surface energy and micro/nanoapophysis of superhydrophobic fabric were contributed by dip-coating components consisting of tri-functionality vinyl perfluoro decanol, vinyl-terminated polydimethylsiloxane and octavinyl-polyhedral oligomeric silsesquioxane. These obtained cotton fabrics exhibited superior resistance to various liquid pollutants, and had excellent resistance to the acid and alkali liquid. Furthermore, they were durable to withstand 10,000 cycles of abrasion, 120 h of accelerated weathering test and heating or freezing test. Most importantly, after 200 cycles of severe abrasion, they were able to restore the superhydrophobicity by brief heating treatment and showed excellent self-healing ability. These designed cotton fabric may contribute to the development of durable superhydrophobic textiles.
研究领域:
材料科学
·
纺织工程
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2020
·
IF 4.469
Jingcheng Liu,Zhen Zhou,Xunzheng Su,Jiancheng Cao,Mengjia Chen,Ren Liu
A series of multi-crosslinkable, self-healing coatings were developed to enhance the mechanical properties through tandem UV-curing and Diels-Alder (DA) chemistry. First, multi-arm UV-cured polyurethane (PU) pre-polymers (IPxH 12 ) were prepared based on cyclotriphosphazene monomer (H 12 ) with more benzene ring structure and half-blocked photosensitive oligomer. Then N, N'-(4, 4′-methylenediphenyl) bismaleimide (BMI) and furfuryl alcohol (FA) were used as the raw materials to prepare DA intermediate by Diels-Alder reaction. The DA intermediate was further reacted with methacrylic acid isocyanate (IEM) to obtain the modified I DA monomer (UV curable DA monomer, containing acrylic double bond). The structure of IPxH 12 and I DA was characterized by FT-IR and 1 H-NMR. UV-cured self-healing coatings were prepared by designing some coating formulations with the IPxH 12 , I DA and initiator. The self-healing properties and mechanical properties of the coatings were investigated. The results revealed that the hardness of the coating was up to 3H, and the introduction of I DA improved its self-healing performance, when the ratio of DA monomer to PU was 2:1, the repair effect was the best. The UV-curable self-healing coating has potential application in metal protection and other fields.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Congxue Yao,Weiyi Xing,Chao Ma,Lei Song,Yuan Hu,Zeyuan Zhuang
In this work, a novel phosphorous containing UV-curable monomer (PA) was synthesized by the reaction of phytic acid and glycidyl methacrylate. The structure of PA was confirmed by 13 C NMR, 1 H NMR, 31 P NMR and FTIR. Pyrolysis gas phase products of PA cured coating mainly include CO, CO 2 , H 2 O, alkyl-containing compounds, carbonyl-containing compounds and aromatic compounds. Cooperated with other two kind of reactive monomers, TAEP and TGICA, PA showed excellent fire protection effect for PMMA matrix, extending fireproof time of PMMA for more than twenty minutes. The SEM results of the carbon residues show that a certain coating prepared can form a uniform and complete expanded carbon layer, resulting in protecting the PMMA matrix from being ignited.
研究领域:
材料科学
·
火灾安全工程
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产品关联
DOI
高影响因子
Coatings
·
2023
·Vol. 13
·期 1
·110
·
IF 3.4
Xixi Yu,Yun Hu,Wen Lei,Chengguo Liu,Yonghong Zhou
Developing environmentally friendly UV-curable polymers with multi-functionality is very significant for sustainable development and environmental protection. In this work, a novel tung-oil-based UV-curable oligomer (TOMAH) was synthesized by Diels–Alder and ring-opening reactions via microwave technology. Subsequently, catalyst-free self-healing UV-curable materials based on a maleate monoester transesterification (MMETER) were developed by co-photopolymerization of TOMAH and hydroxyethyl methacrylate (HEMA). The obtained UV-cured materials possessed a high glass transition temperature (Tg> 81 °C), excellent adhesion (grade 1), and flexibility (2 mm). Particularly, the outstanding photopolymerization activity of the UV-curable resins was proved by UV-curing kinetics. In addition, dynamic transesterifications occurred without an external catalyst at a moderate temperature, resulting in good self-healing properties (with a scratch-repair efficiency of 78.6–93.3%) and shape-memory properties for the obtained UV-cured materials. This work combines the multiple advantages of biomass raw material, microwave synthesis technology, UV-curing method, and multifunctional polymers, thus providing an innovative strategy to fabricate sustainable and intelligent coatings.Keywords:UV-curable coatings;self-healing;tung oil;catalyst-free;microwave technology
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Daokun Wen,Peize Yang,Yunxiang Ma,Mengyao Wu,Xiaoshuang Li,Minghui Zhu,Bing Geng,Guanghui Cui,Hui Li
With the popularization of the concept of sustainable development, biobased precursors are attracting increasing attention in the production of UV-curable adhesives. In this study, a straightforward solvent-free approach to prepare biobased adhesives was employed to synthesize methacrylic acid-modified epoxy soybean oil (AESO), which was subsequently blended with flexible hyperbranched siloxane (HPSI-HS) and hydrophobic 2,2,2-trifluoroethyl methacrylate (TFEMA) monomers. The resultant adhesive can be effectively adhered to the substrates through in situ UV curing with the help of initiators. The introduction of HPSI-HS and TFEMA not only reduced the viscosity of the adhesive, achieving a solvent-free adhesion process, but also improved the adhesion strength, flexibility, and thermal stability of the adhesives. The adhesive exhibits exceptional bonding strength to a variety of substrates, including glass, PVDF, copper, and aluminum. The adhesive is insoluble in water and can be bonded in various liquid environments including dimethyl silicone oil, artificial sweat (pH 4.7), seawater, deionized water, hydrochloric acid aqueous solution, and sodium chloride aqueous solutions. The adhesive is prone to degradation in a concentrated alkaline solution. Both the adhesion strength and degradation performance can be effectively modulated by adjusting the formulation meticulously. The multifunctional, degradable, and biobased fluorosilicone adhesive that is suitable for diverse application scenarios presents a practical approach to the advancement of green adhesives.
研究领域:
材料科学
·
可持续发展
·
化学工程
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产品关联
DOI
高影响因子
Polymers
·
2017
·Vol. 9
·期 11
·552
·
IF 3.364
Hongping Xiang,Xiaowei Wang,Guanghong Lin,Lu Xi,Yan Yang,Dehua Lei,Haihui Dong,Jiahui Su,Yanyan Cui,Xiaoxuan Liu
A novel UV-curable hyperbranched polyurethane acrylate (FHBPUA) with excellent flexibility is successfully synthesized based on a reaction of hydroxyl terminated hyperbranched polyurethane (regarded as core) with flexible semiadduct urethane monoacrylate (regarded as arms). The structure and property of FHBPUA is firstly analyzed and then utilized as functional additives to ameliorate the UV-curing and mechanical properties of epoxy acrylate resin. The degree of branching of FHBPUA turns out to be 0.82. Its thermal decomposition process consists of three different stages, and the glass transition temperature is around 65 °C. The freestanding FHBPUA film (~30 μm thickness) can be UV-cured within 3 s, and its flexibility is up to 1 mm. With the increase of FHBPUA content to 10 wt %, the UV-curing time of UV1000 film decreases from 6 to 3 s, flexibility strikingly increases from 10 to 1 mm, and adhesive force also improves from 5 to 3 grades, meanwhile its glossiness is not influenced by FHBPUA. In addition, a certain amount of FHBPUA can improve the tensile strength and elongation at break of UV1000 film. This novel FHBPUA can be used not only to develop flexible UV-curable freestanding films but also as functional additives to perfect other UV-curable compositions like coatings, inks and 3D printed parts.Keywords:hyperbranched polyurethane acrylate;UV-curing;flexibility;coatings;reinforcements
研究领域:
材料科学
·
化学工程
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DOI
PubMed
高影响因子
Journal of Coatings Technology and Research
·
2020
·Vol. 18
·期 1
·259-269
·
IF 1.815
Liu Jieming,Wang Shaoshun,Su Qiuping,He Jiajian,Li Yong,Xie Jing,Yi Guobin
A hyperbranched polyester with carboxyl end group (HPC) was synthesized by using trimellitic anhydride and neopentyl glycol as raw materials via A 2 + B 3 polycondensation. Then, waterborne hyperbranched polyester acrylate (WHPC) was synthesized by partially modifying the carboxylic groups of HPC with glycidyl methacrylate. In order to explore the influence of molecular weight, acrylate groups content, and ion groups content on performances, a series of WHPC films with different molecular weight, acrylate groups content, and ion groups content were prepared. The dynamic light scattering spectrometer analysis shows that the higher ionic groups content and the lower molecular weight cause the smaller particle size. The ionic group content has a positive effect on the solubility. The smaller molecular weight and particle size cause the lower viscosity. The Fourier-transform IR spectrophotometer reveals that the double bond final conversion increased with increasing acrylate groups content. The final conversion is between 69 and 86%. The curing speed is fast, and the curing time is about 70 s due to the numerous end groups owned by the hyperbranched structure. The dynamic mechanical thermal analysis coupled with end-use mechanical property tests illustrates that the crosslink density has a positive effect on the storage modulus and a negative effect on the flexibility. It is also found that glass transition temperature and pencil hardness are determined by the balance between crosslink segment and hyperbranched polyester segment. The thermogravimetric analysis proves that increased crosslink density and molecular weight promote the heat resistance of films. This work utilizes a novel hyperbranched structure that excels in viscosity, flexibility, and water solubility. Furthermore, the preparation process is convenient.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Yupei Su,Shuting Zhang,Xiaohua Zhou,Zhuohong Yang,Teng Yuan
A cardanol-based UV-curable reactive diluent (CACAA) was synthesized via two facile acrylation reactions and then copolymerized with acrylated epoxidized soybean oil (AESO) under UV irradiation to prepare cured films with high bio-based content. For comparison, petroleum-based reactive diluents, including pentaerythritol triacrylate (PETA) and bisphenol-A ethoxylated (2) diacrylate (BPAEODA), were also used to copolymerize with AESO under UV irradiation. The characterizations of 1 H NMR and FT-IR were implemented to confirm the chemical structure of CACAA. The bio-based content and rheological behavior of the coating solutions with different diluents were compared. Besides, the gel content, volume shrinkage and solvent absorption of the UV-cured films were measured. Furthermore, the dynamic mechanical properties (via DMA), thermal stability (via TGA), mechanical properties (via tensile test) and coating properties (such as coating hardness, solvent resistance , and glossiness) of the UV-cured films were studied. Results revealed that the addition of CACAA could significantly improve the gel content, glass transition temperature , tensile strength and solvent resistance of the cured AESO films. Besides, CACAA exhibited better dilution effect and lower volume shrinkage than petroleum-based diluents (PETA and BPAEODA). Therefore, the cardanol-based UV-curable reactive diluent (CACAA) shows great potential to substitute petroleum-based diluents to prepare low-viscosity and low-shrinkage UV-curable coatings with high bio-based content. Also, the novel method proposed in this study provides a guideline to the preparation of highly bio-based coatings, and it will facilitate the development of bio-based polymers.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）