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学者姓名：余雁
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Abstract ：
Cellulose nanofiber (CNF) foams, promising alternatives to dominant petroleum-based thermal insulation materials, face challenges such as high production costs, poor mechanical stability, and inherent flammability. In this work, a composite foam consisting of CNF and aramid nanofiber (ANF) is fabricated via low-cost ambient drying. Ice template by bidirectional freeze-casting constructs a lamellar structure in the CNF/ANF network. Subsequently, solvent exchange combined with Ca(II) ion cross-linking synergistically strengthens the CNF/ANF network and reduces surface tension during solvent evaporation, thereby avoiding capillary effects during ambient drying, resulting in directional CNF/ANF with low density (14.09 +/- 0.76 mg/cm3) and high porosity (99.04 %). Notably, the prepared ambient-dried CNF/ANF composite foam (Ca-CA-AD) with an aligned structure exhibit anisotropic mechanical and thermal insulation properties, with excellent mechanical robustness (a high specific compressive modulus of 16.71 MPa cm3/g) and outstanding water stability in the axial direction, and super-insulation performance (24.9 +/- 0.06 mW/mK) in the radial direction. Moreover, the ambient-dried Ca-CAAD exhibits outstanding flame retardancy with limiting oxygen index as high as 32.5 %, and a reduced heat release during combustion, compared to its freeze-dried neat CNF and CNF/ANF foams. This work provides insight into the scalable fabrication of mechanically robust and flame-retardant cellulose-based foams with tailored microstructure for thermal insulation.
Keyword ：
Ambient drying Ambient drying Cellulose Cellulose Flame-retardant Flame-retardant Ion cross-linking Ion cross-linking Solvent exchange Solvent exchange Thermal insulation Thermal insulation
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| GB/T 7714 | Liu, Zijing , Lin, Xu , Mai, Xueyan et al. Ambient drying fabrication of mechanically robust, flame-retardant, thermal-insulating cellulose/aramid nanofiber composite foam via freeze-casting combined ion cross-linking [J]. | CARBOHYDRATE POLYMERS , 2025 , 353 . |
| MLA | Liu, Zijing et al. "Ambient drying fabrication of mechanically robust, flame-retardant, thermal-insulating cellulose/aramid nanofiber composite foam via freeze-casting combined ion cross-linking" . | CARBOHYDRATE POLYMERS 353 (2025) . |
| APA | Liu, Zijing , Lin, Xu , Mai, Xueyan , Zhuang, Jiandong , Guo, Fei , Yang, Rilong et al. Ambient drying fabrication of mechanically robust, flame-retardant, thermal-insulating cellulose/aramid nanofiber composite foam via freeze-casting combined ion cross-linking . | CARBOHYDRATE POLYMERS , 2025 , 353 . |
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Furfurylation is a promising wood modification approach, but the reduced wood toughness largely limits its application in structural areas. In this study, the mechanical properties of Chinese fir wood treated with furfuryl alcohol (FA) solutions at varying concentrations (5% to 45%) was investigated, focusing on how the distribution of FA resin across multiple scales influences these properties. The findings highlighted that the mechanical performance of furfurylated wood is strongly dependent on the distribution of FA resin. The inhomogeneous distribution of FA resin in the core and surface layers enhanced the bending strength and stiffness of furfurylated wood. At low FA concentrations (below 25%), FA resin mainly deposited in the wood cell walls, while at higher concentrations, FA resin accumulated in cell lumens with the cell walls nearly saturated, causing a 60% reduction in bending toughness. Remarkably, further resin deposition in cell lumens above 25% FA did not compromise toughness. This reduction in toughness was largely attributed to the FA resin infiltrating the cell walls. For the structural application of furfurylated wood, either restricting resin infiltration into the cell walls or modifying FA resin to mitigate brittleness are proposed, thus achieving an optimal balance between dimensional stability and toughness.
Keyword ：
Cunninghamia lanceolata Cunninghamia lanceolata toughness toughness wood cell impregnation wood cell impregnation wood modification wood modification
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| GB/T 7714 | Chen, Ye , Chen, Zhaohui , Deng, Zhuohui et al. Resin distribution and mechanical properties of furfurylated Chinese fir wood in relation to furfuryl alcohol concentration [J]. | WOOD MATERIAL SCIENCE & ENGINEERING , 2025 . |
| MLA | Chen, Ye et al. "Resin distribution and mechanical properties of furfurylated Chinese fir wood in relation to furfuryl alcohol concentration" . | WOOD MATERIAL SCIENCE & ENGINEERING (2025) . |
| APA | Chen, Ye , Chen, Zhaohui , Deng, Zhuohui , Hu, Jie , Liu, Wenxuan , Liang, Xuelong et al. Resin distribution and mechanical properties of furfurylated Chinese fir wood in relation to furfuryl alcohol concentration . | WOOD MATERIAL SCIENCE & ENGINEERING , 2025 . |
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本发明涉及木材功能化改性领域，公开了一种PVA‑硅溶胶复合溶液和压缩密实化木材及其制备方法。本发明的PVA‑硅溶胶复合溶液采用聚乙烯醇与硅溶胶复合，并通过交联剂，增强改性剂在木材内部的稳定性，从而显著提升压缩木材的变形固定效果，使吸水回复率降低至0.85％，有效解决木材变形回弹问题。此外，本发明PVA‑硅溶胶复合溶液所得压缩密实化木材，还在一定程度上提升了其阻燃性能和力学强度。本发明工艺简单、高效、环保且成本低，是一种绿色环保的木材改性技术。
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| GB/T 7714 | 郭飞 , 胡洁 , 余雁 et al. 一种PVA-硅溶胶复合溶液和压缩密实化木材及其制备方法 : CN202510513086.6[P]. | 2025-04-23 . |
| MLA | 郭飞 et al. "一种PVA-硅溶胶复合溶液和压缩密实化木材及其制备方法" : CN202510513086.6. | 2025-04-23 . |
| APA | 郭飞 , 胡洁 , 余雁 , 郑杰聪 , 张雪霞 , 陈朝卉 . 一种PVA-硅溶胶复合溶液和压缩密实化木材及其制备方法 : CN202510513086.6. | 2025-04-23 . |
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本发明涉及木材加工技术领域，公开了一种新型聚乙烯亚胺接枝的高韧性糠醇改性木材制备方法。本发明采用水溶性聚乙烯亚胺与糠醇预聚物发生席夫碱反应，对糠醇树脂进行接枝改性，有效降低糠醇树脂的交联密度，克服了糠醇改性木材脆性大的问题。与传统糠醇改性木材相比，本发明制备的糠醇改性木材的韧性提升了高达90％，同时大幅提升了木材的尺寸稳定性。本发明所述方法反应条件温和，所制备的糠醇改性木材具有与天然木材接近的颜色，可应用糠醇改性木材在建筑结构和装饰领域。
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| GB/T 7714 | 郭飞 , 陈叶 , 余雁 et al. 一种新型聚乙烯亚胺接枝的高韧性糠醇改性木材制备方法 : CN202510504538.4[P]. | 2025-04-22 . |
| MLA | 郭飞 et al. "一种新型聚乙烯亚胺接枝的高韧性糠醇改性木材制备方法" : CN202510504538.4. | 2025-04-22 . |
| APA | 郭飞 , 陈叶 , 余雁 , 陈朝卉 , 杨日龙 , 张雪霞 . 一种新型聚乙烯亚胺接枝的高韧性糠醇改性木材制备方法 : CN202510504538.4. | 2025-04-22 . |
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本发明公开了一种基于竹加工剩余物的水热炭的制备方法及其在吸附去除工业废水中六价铬方面的应用。其是先将竹加工剩余物粉碎后进行温和干燥，再进行碱性预处理，然后在酸性条件下，将预处理后的竹粉与含氮掺杂剂混合进行水热反应，再经洗涤、烘干、研磨，得到竹粉基水热炭。本发明制备的水热炭材料具有良好的孔隙结构和Cr(VI)吸附性能，对皮革鞣制、电镀等工业中产生的含铬废水显示出良好的净化能力。
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| GB/T 7714 | 肖禾 , 李进霖 , 周哲宇 et al. 一种基于竹加工剩余物的水热炭的制备方法 : CN202510414581.1[P]. | 2025-04-03 . |
| MLA | 肖禾 et al. "一种基于竹加工剩余物的水热炭的制备方法" : CN202510414581.1. | 2025-04-03 . |
| APA | 肖禾 , 李进霖 , 周哲宇 , 卯光健 , 余雁 , 陈礼辉 et al. 一种基于竹加工剩余物的水热炭的制备方法 : CN202510414581.1. | 2025-04-03 . |
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本发明涉及木质功能材料领域，公开了一种超疏水木材及其制备方法与复合悬浮液。所述复合悬浮液的组分包括纳米羟基磷灰石、聚二甲基硅氧烷、乙酸乙酯和固化剂。所述超疏水木材的制备方法，包括以下步骤：将木材进行碱刻蚀处理；将所述复合悬浮液喷涂于木材表面，固化后得到超疏水木材。本发明制备的超疏水木材具有卓越的拒水性能，其水接触角可达153.3°，同时滚动角较小，仅为4.3°，适用于户外环境中的木材应用。在户外暴露60天后，水接触角仍能保持在152.5°，滚动角约为6.1°，证明该涂层具有良好的耐候性。经过多次磨损修复循环后，水接触角依然能恢复至142°，修复率高达92.4％。
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| GB/T 7714 | 杨日龙 , 苏嘉赟 , 余雁 . 一种超疏水木材及其制备方法与复合悬浮液 : CN202411404601.9[P]. | 2024-10-10 . |
| MLA | 杨日龙 et al. "一种超疏水木材及其制备方法与复合悬浮液" : CN202411404601.9. | 2024-10-10 . |
| APA | 杨日龙 , 苏嘉赟 , 余雁 . 一种超疏水木材及其制备方法与复合悬浮液 : CN202411404601.9. | 2024-10-10 . |
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对木材表面进行超疏水改性是降低木材干缩湿胀，延长木制品使用寿命的一种有效手段，但木材表面超疏水改性的实际应用受限于涂层较差的稳定性。木材表面超疏水层中无机纳米粒子的微观形貌是影响其稳定性的重要因素，然而鲜有文章对此进行系统探讨。本文以纳米球、纳米棒及纳米线3种形貌的羟基磷灰石为原料，通过与聚二甲基硅氧烷复合并喷涂到木材表面的方法对木材表面进行超疏水改性，通过砂纸磨损、胶带剥离及化学腐蚀等破坏涂层的方法来探究羟基磷灰石的形貌对木材表面超疏水层稳定性的影响规律。结果表明，由于羟基磷灰石纳米球有着更小的长径比及尺寸，可更有效地进入到木材的细胞壁及细胞腔中，因而由羟基磷灰石纳米球制备而成的木材超疏水层具有更优异的疏水性及稳定性，在砂纸磨损和胶带剥离循环15次后，仍能保持超疏水性。这些研究结果可为高性能且长效稳定木材超疏水涂层的研制提供理论基础。
Keyword ：
微观形貌 微观形貌 木材 木材 稳定性 稳定性 羟基磷灰石 羟基磷灰石 超疏水改性 超疏水改性
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| GB/T 7714 | 苏嘉赟 , 罗丽娟 , 沈杨裕 et al. 纳米羟基磷灰石的微观形貌对木材表面超疏水层性能及稳定性的影响 [J]. | 复合材料学报 , 2025 , 42 (04) : 2162-2173 . |
| MLA | 苏嘉赟 et al. "纳米羟基磷灰石的微观形貌对木材表面超疏水层性能及稳定性的影响" . | 复合材料学报 42 . 04 (2025) : 2162-2173 . |
| APA | 苏嘉赟 , 罗丽娟 , 沈杨裕 , 余雁 , 杨日龙 . 纳米羟基磷灰石的微观形貌对木材表面超疏水层性能及稳定性的影响 . | 复合材料学报 , 2025 , 42 (04) , 2162-2173 . |
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Wood surface superhydrophobic modification effectively mitigates liquid-water-induced shrinkage/swelling, enhancing dimensional stability. However, most researches focus on wood transverse sections due to inherent roughness, whereas few have achieved superhydrophobicity on environmentally exposed tangential surfaces. Furthermore, practical application of superhydrophobic wood remains challenging due to its poor interfacial stability. Herein, a scalable alkali etching strategy that partially removes hemicellulose/lignin to enhance roughness and active sites on wood tangential surfaces is proposed. Subsequent spraying of hydroxyapatite-polydimethylsiloxane (HAP-PDMS) composite solution forms a robust superhydrophobic coating. Etching-induced microcracks and voids facilitate nanoparticle anchoring, synergistically functioning with the cellular framework as a protective barrier to ensure exceptional durability. The modified surface can withstand mechanical abrasion, chemical corrosion, and UV exposure, retaining superhydrophobicity after 60-day outdoor aging. Notably, it exhibits autonomous self-healing: post seven abrasion-repair cycles, the water contact angle recovers to 142 degrees (92.4% restoration efficiency). This work provides an economical route to engineer stable superhydrophobic tangential wood surfaces, extending product service life.
Keyword ：
Alkali etching Alkali etching Exceptional durability Exceptional durability Self-healing Self-healing Superhydrophobic wood Superhydrophobic wood Tangential surface Tangential surface
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| GB/T 7714 | Su, Jiayun , Huang, Minfeng , Zhang, Linxin et al. Achieving durable superhydrophobicity on wood tangential surfaces through alkali-etching-induced roughness [J]. | CELLULOSE , 2025 , 32 (17) : 10293-10305 . |
| MLA | Su, Jiayun et al. "Achieving durable superhydrophobicity on wood tangential surfaces through alkali-etching-induced roughness" . | CELLULOSE 32 . 17 (2025) : 10293-10305 . |
| APA | Su, Jiayun , Huang, Minfeng , Zhang, Linxin , Liu, Yang , Zhang, Xinxiang , Yu, Yan et al. Achieving durable superhydrophobicity on wood tangential surfaces through alkali-etching-induced roughness . | CELLULOSE , 2025 , 32 (17) , 10293-10305 . |
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本发明涉及木材改性技术领域，公开了一种表面密实化木材及其制备方法。所述表面密实化木材的制备方法包括以下步骤：将木材加热预处理后，在木材表面用水分湿润软化，再进行表面压缩密实化，冷却后得到所述表面密实化木材。本发明的压缩密实化木材可实现最高密度峰值达到861kg/m3，且密度峰值离木材表面的最小距离可达0.241mm，相较未预热处理样品大幅缩短，密实区域更贴近表面，表面改性效果更加集中显著。通过调控预热温度和压缩条件，还能进一步提升密度峰值和表面致密程度，使木材表面硬度显著增强，最大可达1337N。
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| GB/T 7714 | 余雁 , 黄宇轩 , 黄闽凤 . 一种表面密实化木材及其制备方法 : CN202510512956.8[P]. | 2025-04-23 . |
| MLA | 余雁 et al. "一种表面密实化木材及其制备方法" : CN202510512956.8. | 2025-04-23 . |
| APA | 余雁 , 黄宇轩 , 黄闽凤 . 一种表面密实化木材及其制备方法 : CN202510512956.8. | 2025-04-23 . |
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本发明涉及木材压缩密实化领域，公开了一种用于糠醇改性木材的三元复合催化剂及其制备方法和应用。本发明以柠檬酸、氯化铵、衣康酸酐、硼砂为三元复合体系催化剂成分，加入到糠醇树脂中，获得具有高效催化效果的糠醇改性液，并使得糠醇树脂在木材上的固化率可达95％，且糠醇改性后的木材具有优异的力学性能和尺寸稳定性，其抗湿胀系数在66％以上，最高可达75％。本发明的制备方法兼具了简单、高效及木材性能优异等优势，可应用于实际生产，所得糠醇改性压缩木材在尺寸稳定性、力学性能和耐环境变化方面均表现出显著优势，具有广阔的应用前景。
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| GB/T 7714 | 余雁 , 黄闽凤 , 梁云辉 . 一种用于糠醇改性木材的三元复合催化剂及其制备方法和应用 : CN202510528424.3[P]. | 2025-04-25 . |
| MLA | 余雁 et al. "一种用于糠醇改性木材的三元复合催化剂及其制备方法和应用" : CN202510528424.3. | 2025-04-25 . |
| APA | 余雁 , 黄闽凤 , 梁云辉 . 一种用于糠醇改性木材的三元复合催化剂及其制备方法和应用 : CN202510528424.3. | 2025-04-25 . |
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