ACS Applied Polymer Materials
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2024
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IF 4.4
Liangyong He,Bin Yang,Sen Wang,Yuqing Yang,Yingying Wang,Haiyang Hu,Zhengzhi Zheng,Jiashuo Liu,Jiasheng Qian,Jibin Miao,Weiguo Zhang,Yuchao Ke
The increasing demand for improving the performance of optical devices and the development of nanotechnology have driven research on diffusion films. The preparation of diffusion films with well-defined microstructures can achieve uniform diffusion and scattering of light, thereby improving the efficiency and performance of optical devices. In this study, diffusion films with high transmittance and haze were prepared using PMMA@TiO2@SiO2 (P@T@S) composite microspheres, and the PMMA microspheres and nanoparticles were combined through electrostatic attraction. As compared with PMMA microspheres, the P@T@S composite microspheres displayed better heat resistance as well as swelling resistance. Optical performance data showed that the P@T@S diffusion film had the perfect optical performance with a transmittance up to 90.5% and a haze of 88.3%. The excellent light diffusion effect of the P@T@S diffusion film was experimentally demonstrated, with the light through the film not only displaying the largest area but also maintaining a relatively high brightness. Our findings can provide reference and guidance for further development of light diffusion films, which are of potential application in optoelectronic devices.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yong Zhang,Qiuli Liu,Jing Li,Haichen Yao,Yihang Hou,Jiazi Hou
Optical antiglare films with high light transmittance and high haze are capable of mitigating the adverse effects of glare on eyes and offering a healthy visual experience. However, the haze increase is always accompanied with the severe loss of the light transmittance, posing a considerable challenge to simultaneously achieving high transmittance and high haze. In this work, a polyvinylbutyral (PVB) nanofibers-based polydimethylsiloxane (PDMS) film featuring of matched refractive indices, loosely fiber stacked density in PDMS, and appropriate fiber diameter close to the visible light wavelength, was prepared with exceptional antiglare property. Subsequently, it was further air sprayed with a hydrophobic F17@SiO 2 coating to endow the P-PVB/F17@SiO 2 composite film superhydrophobicity and self-cleaning with the water contact angle reaching 170.4°, expanding its practical applications. By employing a trimodal light regulation strategy, including Rayleigh scattering of nanoparticles, light reflection induced by micro-tunnels, and Mie scattering caused by nanofibers, the P-PVB/F17@SiO 2 film demonstrated an excellent transmittance of 90.73% and an admirable haze of 94.5%. Therefore, based on the straightforward, large-scale, cost-effective manufacturing, this work proposes a reliable way to achieve optical antiglare film with effective light regulation, which shows a great potential for applications in smart mobility, intelligent buildings, and flexible electronics, etc.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
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2022
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IF 5.546
Gaojie Wu,Zichen Wang,Yucheng Zi,Shengli Qi,Guofeng Tian,Dezhen Wu
In order to prepare polyimide resins with excellent melt processing properties and high transmittance, a series of thermoplastic fluorinated polyimide resins was prepared by copolycondensation of the flexible dianhydride monomer 4,4′-(4,4′-isopropyldiphenoxy)bis(phthalic anhydride) (BPADA) and the fluorinated diamine monomer 2,2′-bis(trifluoromethyl)benzidine (TFMB) with different contents of fluorinated dianhydride 4,4′-(hexafluoroisopropyl)diphthalic anhydride (6FDA) or cyclobutanetetracarboxylic dianhydride (CBDA) via chemical imidization. The effects of the third monomer content on the melt processing properties, optical properties, heat resistance, and mechanical properties of the polyimide resins were systematically investigated. The minimum melt viscosity of the PI resins reached 630 Pa·s below 400 °C. The transmittance at 450 nm of PI sheets prepared by compression molding reached 77%, and the color was significantly lighter than the commercial thermoplastic resin ULTEM, indicative of excellent processability and optical properties. Besides, the PI resins displayed outstanding thermal performance with glass transition temperatures ranging from 224 °C to 242 °C, 5% weight loss temperatures higher than 520 °C in a nitrogen atmosphere, and coefficients of thermal expansion of 51.45–68.97 ppm/K. Moreover, the PI sheets possessed tensile strengths of 88.4–104.7 MPa.
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
高影响因子
Advanced Composites and Hybrid Materials
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2024
·Vol. 7
·期 6
·1-9
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IF 23.2
Dai Xiaokang,Wang Longxiang,Fallatah Ahmed M.,Wang Xing,Almalki Abdulraheem S. A.,Qi Yiyu,Jin Xiaoyu,Yang Shengxiang,Yuan Bingnan
Translucent materials are widely used in indoor lighting, electronic display devices, photovoltaic devices, and other aspects of daily life. Developing materials with high transparency that can effectively manage the transmitted light spectrum is of significant practical importance. This study focuses on constructing a flexible composite film matrix using biomass nanocellulose fibrils (CNF) and polyvinyl alcohol (PVA) as raw materials. Based on the down-conversion luminescence principle, we use carbon nitride nanosheets (CNNs) as the core for light management, filtering UV rays from sunlight while converting them into visible light for light compensation. The transparency test results show that the prepared CNNs@CNF/PVA flexible composite film has a total transmittance of about 90% in the visible light range, with a haze greater than 60%. Three-dimensional fluorescence test results indicate that CNNs@CNF/PVA can convert UV light in the range of 250–375 nm into visible light in the range of 420–550 nm. Simulated outdoor lighting results show that the composite film material performs better than ordinary glass and PMMA in light transmission. This biomass-based flexible film material is expected to have broad applications in indoor lighting, flexible photovoltaic devices, and high-quality fruit and vegetable cultivation.
研究领域:
材料科学
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光管理技术
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生物质材料
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
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2021
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IF 4.598
Kaitai Hu,Qingqing Ye,Yingtao Fan,Junyi Nan,Fangyuan Chen,Yang Gao,Yingzhong Shen
Polyimide (PI) films have excellent comprehensive properties and bright prospects in the next generation of optoelectronic and microelectronic applications. PIs were synthesized by aromatic diamines and alicyclic dianhydrides considered to be the most effective method for preparing polyimides with high light transmittance and low dielectric constant. In order to improve the overall performance of polyimide, the introduction of a large trifluoromethyl group into the main chain is also considered a powerful strategy. In this article a novel diamine containing 6 trifluoromethyl groups has been designed and synthesized by Suzuki reaction. Afterwards, PIs were synthesized with fluorinated aromatic dianhydride and alicyclic dianhydride through a two-step method. The two PIs have excellent solubility: PI-a and PI-b exhibited excellent solubility in common polar solvents. Such as DMF, DMAc, NMP and DMSO at room temperature, and PI-a was soluble in low-boiling solvents such as ethyl acetate, CH 2 Cl 2 and CHCl 3 at room temperature. PI-b was soluble in low-boiling solvents acetone and CHCl 3 at room temperature, which was rarely seen in other aromatic polyimides. Soluble in common organic solvents, especially low boiling point solvents, made these polymers easy to process and suitable for processing technology in solution. This was an important modification for PIs. They also showed good high temperature resistance: the decomposition temperature (T 5% ) of two PIs were 520 °C and 475 °C. In addition, the residual rate at 790 °C was 50% and 49% respectively. Two PI films had a very low dielectric constant 2.26 and 2.24, respectively, which was attributed to the hyperbranched structure and strong electron-withdrawing fluorine-containing groups. PI-a and PI-b also had low water absorption of 0.66% and 0.72%, respectively. The transmittance of PI-a and PI-b high transparent films at 450 nm were 74% and 82%, respectively. The significant optical modification was mainly due to the weak electron-accepting alicyclic unit and the large trifluoromethyl electron withdrawing group. This work mainly provided an effective strategy for synthesizing comprehensive excellent performance PIs with high transmittance, excellent solubility, low water absorption, high heat resistance and low dielectric constant.
研究领域:
材料科学
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光学电子学
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产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Ting Shi,Qian Jia,Hongning Wang,Ruoyu Chen
The multifunctional coatings with hydrophobicity , oleophobicity, and antireflection have great practical application value. In this work, the mixed sol of alumina sol and silica sol prepared by the sol-gel method was deposited on both sides of glass substrates by dip-coating method. After the calcined coating was treated with hot water at 90 °C, the coating changed from smooth to grass-like hierarchical nanoflakelets, and the uneven distribution of silica nanospheres on grass further increased the porosity of the coating and formed a more complex double nano-scale structure. Finally, the coating was modified with PFDTES by the chemical vapor deposition method (CVD). The results showed that the highest transmittance of the coating reached 99.59% in the visible wavelength range of 400–800 nm, the contact angles of water, glycerin, ethylene glycol, and soybean oil were 175°, 150°, 140°, 120°, respectively, and the rolling angle of water is less than 3°. The coating has multiple functions of high transmittance, superhydrophobicity, and oleophobicity. In addition, the coating has significant resistance to chemical erosion, mechanical stress, and ultraviolet radiation , showing great potential for practical application.
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
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
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IF 8.3
Hong Chen,Wei Ou,Yu Huang,Hongchang Huang,Junlan Li,Juncheng Liu
As a protective layer for the flexible solar cell, a flexible protective material should be of high transmittance , excellent ultraviolet (UV) resistance and mechanical property. Herein, a foldable transparent polyimide (PI) composite film assembled with the zirconium-based metal-organic frameworks (UiO-66-X, X = H, NH 2 , NO 2 ) is prepared by the direct dispersion or in-situ growth methods. The results show that the transmittances of UiO-66-X@PI films (U@PI, NU@PI and OU@PI) prepared with the in-situ growth are higher than those of UiO-66-X/PI films prepared with the direct dispersion, and the former's mechanical properties are also better than those of the latter. This may be because that the UiO-66-X in the former are embedded into the PI matrix to construct multipoint bonding network. The U@PI exhibits stronger UV-resistance than the Pristine PI, NU@PI and OU@PI after 5000 equivalent sun hours (ESHs) UV irradiation. The attenuations of average transmittance and tensile strength for U@PI are 2.19 % and 18.68 %, respectively, which are only one half and one-third of those for the Pristine PI (4.59 % and 56.58 %), respectively. And the average transmittance of U@PI has been over that of the Pristine PI after 5000 ESHs UV irradiation. This may be because that the porous UiO-66 increases the UV transmission path and the electron-hole recombination center , thereby inhibits the destructive effect of UV.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
OPTICS LETTERS
·
2024
·Vol. 49
·期 9
·2245-2248
·
IF 3.1
Xiaolan Zhou,Xiaolan Zhou,Shengyuan Chen,Shengyuan Chen,Cong Zhang,Cong Zhang,Xu Huang,Xu Huang,Kailei Lu,Kailei Lu,Jianqi Qi,Jianqi Qi,Jianqi Qi,Tiecheng Lu,Tiecheng Lu,Tiecheng Lu,Tiecheng Lu
Narrowband green-emission, combined with superior physicochemical stability and thermal performance, is regarded as a common pursuit in backlight display applications. However, mainstream phosphor-converted materials composed of resin or silicone resin easily encounter the dilemma of thermal decomposition and chemical corrosion for practical use. To overcome this problem, in this work, Mn2+/Mg2+ co-doped AlON ceramic is successfully realized with ultra-narrowband green-emission and high transparency. The luminescent property of AlON: Mn2+–Mg2+ ceramic exhibits narrowband green emission centered at 509 nm with a full width at half maximum of 36 nm, which is smaller than the corresponding powder counterpart (44 nm). Moreover, AlON: Mn2+–Mg2+ ceramic presents a wide color gamut (103.6%) and high color purity (74%). Concurrently, high transmittance of this ceramic, at 82%, unveils a potential innovation in the display technology field. This work may facilitate the development of narrowband green light-emitting converters based on AlON: Mn2+–Mg2+ transparent ceramics in large color gamut backlight display applications.
研究领域:
材料科学
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光学工程
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显示技术
✓ 已验证
DOI
PubMed
高影响因子
OPTIK
·
2021
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IF 2.443
Beiping Dong,Yanan Gao,Juncheng Liu
High transmittance and strong dust-removing film has a broad potential application prospect in architectural glass, solar photovoltaic glass, automotive glass, etc. In this paper, SnO 2 is used as the antistatic agent, and SiO 2 as the matrix. The effects of Sn/Si molar ratio on the structure and properties of the SnO 2 -SiO 2 film prepared on quartz glass substrate with sol-gel dipping were studied. The film was analyzed by X-ray diffractometer (XRD), Fourier transform infrared (FTIR) spectroscopy and Scanning electron microscopy (SEM). Ultraviolet-Visible-Near Infrared Spectrometer (UV–VIS–NIR) and Hall effect instrument tested the photoelectric properties. Falling dust experiment was used to determine the film’s dust-removing property. The results show that the SnO 2 -SiO 2 film is composed of nano particles of SnO 2 tetragonal rutile phase and amorphous SiO 2 , and has antistatic dust-removing property. With the increase of Sn/Si molar ratio, the crystallization quality and average grain size of the film increases, while the square resistance decreases continuously. The visible transmittance fluctuates with an amplitude of no more than 1.2%, and obtained the minimum value 87.246% at Sn/Si molar ratio of 2:1. Moreover, the film’s dust-removing performance improves continuously, which obtained the best, 50%, at Sn/Si molar ratio of 2:1.
研究领域:
材料科学
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光学工程
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表面科学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 31
·e55738
·
IF 2.7
Liangyong He,Yuqing Yang,Bin Yang,Weiqiang Hu,Zhengzhi Zheng,Tianyu Lu,Haijia He,Jiasheng Qian,Yaoyang Chen,Weiguo Zhang,Yuchao Ke
In recent years, optical diffusion film materials with high transmittance and high haze have been widely reported, while there is relatively rare research on their functionalization and practical application especially in real scenario. In this work, optical diffusion films using polymethyl methacrylate (PMMA)@TiO 2 @SiO 2 (P@T@S) composite microspheres were fabricated, which exhibited sufficiently high light transmittance and haze. The binding mode of PMMA microspheres and nanoparticles suggested that PMMA microspheres with a positive surface potential combined with nanoparticles with a negative surface potential through electrostatic attraction to achieve mutual binding. The prepared P@T@S composite microspheres showed better heat and swelling resistance than those of PMMA microspheres. The P@T@S diffusion film, whose excellent light diffusion effect was clearly demonstrated, exhibited the best optical performance among all optical diffusion films prepared. After passing through the P@T@S diffusion film, the laser light was not only uniform but also bright. The findings from this work can provide some insight into further research on optical diffusion films applied in optoelectronic device areas.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
THIN SOLID FILMS
·
2019
·
IF 1.888
Hanyu Yao,Honglie Shen,Quntao Tang
Efficient up/down conversion (UC/DC) thin films with high transmittance were prepared by an anisole dissolved polymethyl methacrylate (PMMA) solution mixed with β-NaYF 4 : 5% Er, 10% Yb (UCNPs) and β-NaYF 4 : 10% Tb, 1% Yb (DCNPs) nanocrystals , which required no postdeposition heat treatment. The full embedment of nanoparticles in the PMMA matrix was confirmed by atomic force microscopy , and the films were dense and uniform with high transmittance. Both UCNPs and as-prepared films exhibited strong UC emission bands in the green and red region. The relative intensities of green to red emissions in the films were enhanced compared with UCNPs because of the surface passivation by PMMA. Under excitation of 355 nm laser, both DCNPs and as-prepared films exhibited down conversion luminescence and no obvious intensity difference was observed between nanoparticles and the films. By tape test, the conversion films were proved with a strong adhesion due to the protection of PMMA. The results suggested that PMMA is a good matrix for fabrication of efficient UC/DC films with high transmittance and good adhesion.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2020
·
IF 4.231
Maoping Lu,Yingchun Liu,Liyan Liang,Mangeng Lu
Thermally degradable thermoset acrylate-epoxy resins with thermal cleavable groups had been prepared by a series of acrylate-epoxy pre-polymers which was cured with 4-methyl hexahydrophthalic anhydride (MHHPA). The acrylate-epoxy pre-polymers were synthesized via the radical polymerization of 3, 4-epoxycyclohexylmethyl methacrylate (EMA) with butyl methacrylate (BMA), tert-butyl methacrylate (TBMA), tert-butyl acrylate (TBA) and butyl acrylate (BA), respectively. The chemical structure of pre-polymers was characterized in detail. The thermal degradation mechanism and thermal properties, mechanical properties as well as dielectric properties of the acrylate-epoxy resins were systematically investigated. Results showed that t-butyl group and methyl group had a positive influence on the main thermal degradation process. TBMA-E/M presented lower degradation temperature (The initial degradation temperature is ~214 °C) and dielectric constant (~3.19 at 10 6 Hz) among these thermosets. Besides, all samples possessed similar high transmittance in the visible range. Therefore, acrylate-epoxy resins had a promising application and degraded at a desirable temperature.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）