Materials
·
2019
·Vol. 12
·期 3
·420
·
IF 2.972
Qifeng Chen,Xinya Du,Guangxue Chen
In the present study, plant fiber foam materials have significant differences in density compared to conventional plastic foam materials. In view of the current problems of fiber foam materials, the montmorillonite (MMT) organically modified by octadecyl-dimethyl-benzyl-ammonium chloride (ODBA) was added to the preparation of composite foam materials by optimizing the existing formula. The properties of organic montmorillonite (OMMT) and the prepared composite foam materials were characterized by scanning electron microscopy (SEM), X-ray diffractometry (XRD), and a standing wave tube sound absorption tester. The results showed that the pore size inside the plant fiber foam materials with the addition of OMMT was more uniform and arranged more closely and orderly. In addition, when the OMMT was added to 0.1 g, the density of the prepared OMMT-bagasse composite foam materials reached its lowest point of 0.079 g/cm3, which was shared with high foam materials.Keywords:plant fiber composite foaming;ODBA;OMMT;sound absorption
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2019
·Vol. 11
·期 5
·2289-2298
·
IF 6.97
Leitao Cao,Yang Si,Yuanyuan Wu,Xueqin Wang,Jianyong Yu,Bin Ding
Low-density nanofibrous aerogels enable various applications but are often hindered by their fragile bendability and poor tensile strength. Herein, we report a strategy to design nanofibrous aerogels with robust bendability and superelastic property, which has been achieved by fabricating bamboo lashing-like structures through a freeze-drying method. The obtained reinforced nanofibrous aerogels (RNFAs) can maintain their structural integrity after 100 bending-recovery cycles at a bending angle of about 100°. Particularly, the RNFAs can completely revive from large deformation with a fast recovery speed (∼834 mm s−1). Significantly, the internal hierarchical porous structures and hydrophobicity of the materials provide them with ultralight properties (density <11 mg cm−3), efficient sound absorption capability (noise reduction coefficient of 0.41) and good moisture resistance; thus, they are promising options in cabins, vehicles, and the regulation of indoor reverberation.
研究领域:
材料科学
·
声学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2025
·
IF 14.1
Yan Ma,Mu He,Jiaxuan Wang,Fuying Ma,Hongbo Yu,Yaxian Zhou,Shangxian Xie
Current sound-absorbing materials, reliant on nonrenewable resources, pose sustainability and disposal challenges. This study introduces a novel collagen-lignin sponge (CLS), a renewable biomass-based material that combines collagen's acoustic properties with lignin's structural benefits. CLSs demonstrate high porosity (>0.97), lightweight (10 mg cm − 3 ), and exceptional broadband noise absorption performance (sound absorption coefficient exceeding 0.9 across 2000–6300 Hz). Due to their unique hierarchical and aligned pore structure, CLSs display superior low-frequency sound-absorbing capabilities and a high noise-reduction coefficient of 0.64 (for a 30-mm-thick sample). A geometric model is also developed to evaluate and predict the sound absorption performance with high consistency to the experimental results. Additionally, the inclusion of lignin as a green crosslinker has significantly improved the thermal stability and compressive strength by ≈600% compared to collagen sponges alone. The innovative integration of collagen and lignin in this study not only leverages the benefits of renewable resources but also presents a cost-effective and straightforward preparation process, positioning CLS as a promising alternative for the construction of sound-absorbing materials seeking sustainable solutions.
研究领域:
材料科学
·
生物工程
·
声学
✓ 已验证
DOI
PubMed
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2024
·
IF 4.5
Enyuan Hu,Yingwen Zhu,Xiao Cheng,Cheng Deng,Lei Zhao,Bo Cui,Kai Gu,Mengfu Zhu
Polyimide (PI) aerogels are the great candidates for sound absorption, thermal insulation and mechanical cushioning materials due to their low density, excellent mechanical properties and good thermal stability. However, the high shrinkage and hydrophilicity of PI aerogels , as well as the time-consuming and complexity of the process directly limit their wide application in many fields. Herein, a facile one-step method for the synthesis of porous monolithic poly(urethane-imide) (PUI) aerogels was successfully developed. Hydrothermal synthesis and ambient drying methods were adopted in the construction of monolithic chemically cross-linked PUI aerogels, which avoids the complex imidization process. PUI aerogels were homogeneously produced by a chemical cross-linking copolymerization reaction between polyurethane (PU) oligomers , Benzene-1,2,4,5-tetracarboxylic dianhydride (PMDA) and 1, 3, 5-tris (6-isocyanatohexyl)-1, 3, 5-triazine-2, 4, 6(1H, 3H, 5H)-trione without any catalysts. Interestingly, the introduction of linear flexible PU oligomers chain segments effectively prevented the shrinkage of the network backbone and enhanced the hydrophobicity of PUI aerogels. The obtained PUI aerogels have low density (0.196 g/cm 3 ), low shrinkage (9.30%), high porosity (79.54%) and hydrophobicity (water contact angle of 129.2°). Under high pressure, PUI aerogel was compressed but not break and the compression Young's modulus as high as 3.638 MPa. Moreover, the thermal conductivity of PUI aerogels was only 59.92 mW/m/K at 150 °C. When the back cavity depth was 5 mm, the highest sound absorption coefficient of PUI aerogel was up to 0.7219. This work provides a new method for the development of lightweight, high-mechanical-strength polymer aerogels, and the prepared aerogels have a potential application in the field of multifunctional integrated sound absorption materials.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2024
·Vol. 14
·期 2
·1009-1017
·
IF 3.9
Xizhi Zhang,Xiaozhong Chen,Wenchao Min,Guowei Liang,Wei Zhang,Shuheng Yao,Ximing Zhong
Using porous materials for sound absorption is an effective approach to alleviating noise pollution, although their hydrophilic properties potentially cause concerns regarding public safety and health risks. This work provides a facile strategy for establishing a multifunctional ceramic system by using sponges as the sintering template, adjusting the pore structure of ceramic foams by varying the ceramic slurry weights and fluorinating the sintered ceramic foams via hydrolysis and condensation processes to provide low surface energy. The obtained porous ceramic foams demonstrate sound-absorbing, waterproof, and antibacterial properties. The results reveal that the increase in ceramic slurry weight decreases the pore size and porosity due to the formation of more compact structures, and the decrease in porosity compromises the sound absorption performance. In the middle-range sound frequency, the maximum sound absorption coefficient reached 0.92. In addition, the fluorination of the rough ceramic surfaces endows the ceramic foams with waterproof properties, which enables them to float on water and display the silver mirror phenomenon. In addition, due to the waterproof property reducing the contact area between the ceramic surface and the bacterial suspension, as well as the lipophilic fluorine chain disrupting the bacterial structures, these ceramic foams exhibited antibacterial rates above 95%. In addition, the mechanisms underlying the sound-absorbing, waterproof, and antibacterial properties of these porous ceramic foams are elucidated. Therefore, this work provides a facile approach to developing a multifunctional ceramic system. Their practical features make these ceramic foams more significant in the field of noise reduction.
研究领域:
材料科学
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声学工程
·
生物医学
✓ 已验证
DOI
高影响因子
COMPOSITE STRUCTURES
·
2025
·
IF 7.1
Liting He,Dongyang Li,Lulu Song,Jing Fang,Hao Li,Xiaoang Liu
Sound absorption materials are usually used to reduce room reverberation, and sound insulation materials are used to prevent sound transmission. However, traditional sound absorption or sound insulation materials often exhibit only a single acoustic function. As a result, they cannot provide both sound absorption and sound insulation at the same time. For this purpose, back coated double layer aerogel was prepared by thermal curing method. It solves the problem that sound absorption and sound insulation cannot exist at the same time. The structure consists of a sound absorption layer made from biomass aerogel and a damping layer coated with polydimethylsiloxane (PDMS). The sound absorption layer consists of a porous network structure formed by crosslinking delignified kapok fibers and sodium alginate with calcium ion (Ca 2+ ). The damping layer is constructed by the back-coated PDMS damping material. The effects of the concentration of Ca 2+ and the coating method of PDMS on the acoustic behavior of the aerogel were investigated. At 50 ∼ 6300 Hz, the aerogel not only has good sound absorption performance but also has sound insulation performance. Furthermore, aerogel effectively addresses the issue of interfacial incompatibility in multilayer heterogeneous composites, providing a promising approach for designing modern noise reduction materials.
研究领域:
材料科学
·
声学工程
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Tianyi Hang,Luyao Ding,Guohao Lv,Jiahui Shen,Jiajia Zheng,Xiping Li,Shaohua Jiang,Yiming Chen
With the ongoing advancement of society, the populace’s needs for goods are progressively evolving from essential to comfy. Within the construction sector, the demands for building materials with exceptional sound absorption and thermal insulation capabilities are becoming increasingly expected by consumers. Herein, the melamine foam (MF) and carboxymethyl cellulose (CMC) were combined through a facile dip-coating method. Benefitting from the unique three-dimensional porous structure and the folded pore walls caused by CMC, the composite foam with thin-slice structure exhibited a high sound absorption capacity with a noise reduction coefficient of 0.424 (thickness = 20 mm). In particular, compared to the unmodified MF, the sound absorption performance of the composite foam was increased by approximately 94.3 % at 500 Hz and 211.2 % at 1000 Hz. Furthermore, it also demonstrated outstanding thermal insulation ability with low thermal conductivity of 0.0319 W/mK and thermal diffusivity of 0.855 mm 2 /s. When placed on a heating platform of 145 °C, the temperature difference between the upper and lower surfaces of the composite foam reached an impressive 105.1 °C. Based on these advantages, this high-performance composite foam possesses great potential for applications in engineering, construction, noise reduction, and personal protection.
研究领域:
材料科学
·
建筑工程
✓ 已验证
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Xiaopeng Yue,Yandan Liang,Panpan Cao,Longlong Yan,Siqian Zhang,Ling Meng
Considering the distinctive oxidative coupling characteristic of tannin acid, it was used as an interfacial interlayer to build a nano-coating structure on the surface of carbon fiber (CF)using amino-modified graphene oxide (GON) via Schiff base reaction. Furthermore, a kind of multifunctional composite paper (PTCF/GON) with excellent electromagnetic interference shielding, antibacterial and sound absorption properties was fabricated using surface modified CF (TCF/GON) and plant fibers. The increased active groups on the surface of TCF/GON improved its hydrophilicity and enhanced its dispersibility in water, which facilitated to form an effective interconnected conductive network of composite paper via traditional wet forming process. Composite paper fabricated by 30 wt% surface decorated CF (PTCF 1.5 /GON 1.2 ) achieved an electromagnetic interference shielding effectiveness as high as 43.4 dB in X-band, shielding 99.9 % of incident electromagnetic energy. Meanwhile, PTCF 1.5 /GON 1.2 exhibits good sound absorption performance in specific frequency bands, with a sound absorption coefficient of 0.98 around 1180 Hz. Besides, PTCF 1.5 /GON 1.2 also exhibited excellent antibacterial properties. This strategy provides an economical and practical method for manufacturing multifunctional electromagnetic shielding materials with superior performance.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Zu-Sheng Huang,Yun-Yun Quan,Jia-Jun Mao,Yi-Li Wang,Yuekun Lai,Jing Zheng,Zhong Chen,Kun Wei,Huaqiong Li
Superhydrophobic materials have attracted immense commercial and academic interests in recent years. However, the poor mechanical durability has restricted their practical applications where high durability is required. Here, a facile one-pot synthesis method was reported to fabricate multifunctional superhydrophobic composite materials with remarkable mechanochemical robustness, stain repellency, oil-water separation and sound-absorption. Their mechanical and chemical durability could be greatly improved by chemically adhering epoxy resin microspheres (ERMs) on 3-D porous skeleton structures of latex sponge. The materials could retain superhydrophobicity after going through sandpaper abrasion, ultrasonication, multiple knife scratch, tape peeling and finger wiping, and exposure to UV irradiation and high temperature. The materials are able to maintain the repellency against strong acid and alkali droplets. The combined excellent mechanical properties, liquid repellency & selectivity , and other functional properties displayed by this type of material have made it a strong candidate for a range of industrial applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Mengmeng Yang,Lixia Yang,Zhaofeng Chen,Yang Ding,Lihao Liu,Wu Qiong,Tianlong Liu,Manna Li
Ceramic nanofibrous aerogels have attracted great interest because of their extraordinary multifunctional properties. Herein, a facile strategy was proposed to create SiO 2 nanofibers-BN nanoribbons assembled binary aerogel with excellent temperature-invariant super-flexibility, as well as low thermal conductivity , low infrared radiation and excellent sound absorption properties. In addition, the unique structure of the nanofibers-nanoribbon aerogel acts as the thermal insulation layer, combined with Al foil acting as an infrared reflection layer, forming a component that can effectively hide high infrared targets. The nanofibrous-nanoribbons binary aerogel possess low thermal conductivity (0.0288 W/(m⋅K)) and outstanding sound-absorption ability (NRC value of 0.43), as well as excellent infrared stealth ability, which makes it an ideal candidate for thermal insulation and sound absorption in multi fields.
研究领域:
材料科学
·
热能工程
·
声学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Kaihui Hua,Xiaobing Chen,Xiaochun Chen,Xiuan Xi,Yu Zheng,Pinhai Gao,Chuncan He
Self-reinforcing porous mullite ceramics have attracted considerable attention in the field of insulation and sound absorption materials, due to their precise and controllable porous structure, high temperature and corrosion resistance, and low thermal conductivity. However, the high cost and relatively low performance obstruct their practical applications. In this work, self-reinforcing porous mullite ceramics were fabricated by utilizing construction waste via foam-gel casting and freeze-drying methods, and the impact of blowing agent dosage and sintering temperatures on the microstructures, sound absorption, and thermal insulation properties were systematically investigated. In addition, the related mechanism was also discussed in detail. The results show that, at a sintering temperature of 1000 °C and blowing agent dosage of 0.10 wt%, the self-reinforcing porous mullite ceramics can be successfully obtained, which exhibited a bulk density as low as 0.24 g/cm³ and porosity more than 90 %. Consequently, at a frequency of 2000 Hz, its absorption coefficient reached about 0.81. Furthermore, its thermal conductivity also decreased to about 0.06266 W/(m·K). This development not only unveils innovative avenues for the cost-effective fabrication of porous ceramics but also significantly broadens their potential applications within high-performance thermal insulation and sound absorption domains.
研究领域:
材料科学
·
热工与声学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 16
·51992
·
IF 3.125
Chao Yan,Ye-Jun Luo,Wen-Ge Zhang,Zi-Fan Zhu,Pei-Ying Li,Nian Li,Yu-Fang Chen,Tao Jin
Melamine foam is widely used in daily life and building materials due to its superior flame retardancy properties, thermal insulating effects, smoke suppressive ability, low toxicity, and sound absorption properties. To increase the practicality of melamine foam, most research has focused on extending resin storage duration and preparing low-toxic, high-strength foam. In this study, allyl glycidyl ether was used to modify melamine resin, and the modified resin was able to demonstrate a longer storage duration as compared to the conventional resins, and the storage time for the modified resin has exceeded 90 days, and a low free formaldehyde content (0.05 ppm). Furthermore, the as-prepared foam exhibited excellent flame retardancy properties (limiting oxygen index [LOI] = 38.5%, it could easily pass the UL-94-0 grade), low-volume water absorption (0.94%), and lower thermal conductivity (0.0225 W·m −1 ·K −1 ). Concurrently, the foam prepared based on the optimal conditions possessed a high compressive strength of 5.08 MPa, which was ca. 17.5 times higher than that of the conventional melamine foam. Thus, it is expected that this melamine resin modification approach can provide a new approach for the preparation of high-performing foams.
研究领域:
材料科学
·
化学工程
·
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）