JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 45
·e54644
·
IF 3
Liang Yi,Longxiadi Zhou,Long Yan,Zhisheng Xu
To enhance the flame retardancy and aging resistance of grouting fireproof glass, different molecular weights of polyethylene glycol (PEG) were mixed with acrylamide (AM) to construct interpenetrating network hydrogels, then the obtained hydrogels were mixed with flame retardants to prepare a series of transparent flame-retarded hydrogels applied in the fireproof glass. The effects of PAM/PEG hydrogel with varying PEG molecular weight on the optical transparency, heat insulation and aging resistance of fireproof glass were investigated. Optical transparency analysis shows that the light transmittance of grouting fireproof glass decreases with the increase of PEG molecular weight in the PAM/PEG interpenetrating network. Fire tests show that PAM/PEG hydrogel significantly enhances the heat insulation and aging resistance of the grouting fireproof glass compared to the single PAM network hydrogel. The flame-retarded and anti-aging effects of PAM/PEG hydrogel in the fireproof glass varies with the PEG molecular weight, and the order is PAM/PEG2000 > PAM/PEG1500 > PAM/PEG1000 > PAM/PEG800. Accelerated aging test shows that PAM/PEG interpenetrating network hydrogel is less affected by aging conditions and exerts durable heat insulation and transmittance. Especially, the backside temperature of 3600 s and transmittance of PAM/PEG2000 system after 264 h aging test only changed 38.3°C and 1.3%, respectively, compared to the unaged PAM/PEG2000 system.
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
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Fangyuan Ren,Furong Tao,Tingting Yang,Yuezhi Cui,Libin Liu
Controlling the structure, chemical and thermal properties of the material surface is crucial to improve the utilization of resources and reduce energy consumption. In this work, a simple, fluorine-free spraying strategy is adopted to build a high-performance superhydrophobic coating. The superhydrophobic layer is obtained by mixing the adhesive (prepared by UV-assisted click reaction) with particles of different scales. Octa(3-glycidyloxypropyl) polyhedral oligomeric silsesquioxanes (GPOSS) with phenylphosphonic acid are added to achieve flame-retardant effect. The coating exhibits the excellent superhydrophobicity (WCA = 165°), self-cleaning and mechanochemical durability even under severe environments such as harsh abrasion, high temperatures, UV exposure and other strong alkaline substances. In addition, the coating has anti-icing, resistant to metal corrosion and exhibits excellent flame-retardant properties (pkHRR reduced by 30.2 %). The technology can provide technical support and theoretical basis for the application of high-performance special wetting materials in the field of energy conservation and environmental protection.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Fiber Materials
·
2023
·Vol. 5
·期 5
·1618-1631
·
IF 16.1
Luo Yuxin,Zhang Yu,Xing Tonghe,He Annan,Zhao Shichao,Huang Zhiyu,Liang Zihui,Liu Xin,Liu Yequn,Yu Yuxiu,Qin Yong,Chen Fengxiang,Xu Weilin
Carbon fibers (CFs) are widely used in various cutting-edge fields, such as aerospace, military, automobiles, and sports, owing to their unique combination of excellent mechanical properties, good thermal stability, and lightweight. However, their inherent super-black appearance makes it difficult to satisfy the aesthetic/fashion requirements of the colorful world, and the flammability of CFs severely limits their practical utilization in high-temperature and other extreme environments. Herein, we fabricated full-color tunable colored CFs on a large-scale via atomic layer deposition, based on the monolayer film interference strategy. CFs exhibited brilliant colors and excellent environmental durability in extreme environments, such as intense ultraviolet (UV) irradiation, accelerated laundering, friction, high-temperature, and low-temperature treatments. Colored CFs also exhibited excellent fire-retardant performance that could withstand alcohol-lamp flame burning for 60 min. Our work provides insights into an innovative material/structural design that can help achieve rapid development of the CF industry and global carbon neutrality/sustainability. Graphical Abstract
研究领域:
材料科学
·
可持续发展
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 138
·期 15
·50177
·
IF 2.52
Cheng Wang,Siqi Huo,Shi Liu,Qi Zhang,Zhitian Liu
In this work, the exfoliated and functionalized boron nitride (f-BN) nanosheets were prepared via facile treatment and used in the intumescent fire retardant (IFR) coatings, which offer passive fire protection to the steel. To acquire the best fire resistance, the formula of the coating was optimized using response surface methodology (RSM) based on central composite design. According to the result, the optimal sample, with 36.2 wt% ammonium polyphosphate (APP), 27.4 wt% pentaerythritol (PER), 16.8 wt% melamine (MEL), and 7.9 wt% f-BN, was prepared and its fire resistance was tested in our lab. At the end of fire resistance test, the backside temperature of optimal sample was only 185.2°C, which was very close to the RSM-predicted result, indicating satisfactory fire resistance. During the test, the coating decomposed to form an intumescent char layer with high graphitization degree and compactness, thus suppressing the transfer of heat and protecting the underlying steel. In addition, the optimal coating possessed great water tolerance and thermal stability, and its water contact angle and char yield reached up to 66.7° and 40.5%, respectively. Hence, this IFR coating with satisfied fire retardancy and water tolerance has broad practical future in the fire safety of steel structure.
研究领域:
材料科学
·
防火安全工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 34
·e52809
·
IF 3.057
Le Wang,Bingbing Leng,Cengliang Shan,Xu Zhao,Chunhui Zhu,Yang Liu,Hongyan Zhang,Wenge Xu,Baijun Liu
In the current study, the ceramifiable-silicone-rubber-composites (CSRs) containing allyl-functionalized cyclophosphazene (CP-Allyl) were prepared for studying as novel fire-resistant insulating materials. Electron-beam (EB) irradiation was applied to obtain the cross-linked networks, and the gel content of 98.8% could be achieved at an irradiation dose of 120 kGy. The thermal, mechanical, flame retardancy and insulation properties were well investigated, and it was found that the involvement of CP-Allyl could have a great influence on the properties. The tensile stress of the EB-irradiated CP-Allyl containing composite reached 5.2 MPa, and its limiting oxygen index was up to 32.4%. After ablation at 700–1000°C, it was observed that the shapes of the CSR samples could be well maintained, and the hard and integrated ceramic phases were formed. All the studies indicate that these CSRs may be the promising insulating materials for wires and cables.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 16
·2313645
·
IF 18.5
Yongshi Guo,Xiaohua Zhang,Feng Jiang,Xuwang Tian,Jiawei Wu,Jianhua Yan
Cermet has broad applications in electronics, but achieving stable ceramic-metal contact has always been a challenge, particularly at hot temperature and large deformation conditions, due to the significant differences in thermal expansion coefficient and stiffness of ceramics and metals. Here, stress matching and strong interphase bonding at the heterogenous ceramic-metal contact are realized by using flexible ceramics, leading to stable applications in flexible fire-resistant pressure tactile sensors. Cu/Au nanolayers are deposited first onto the toughened flexible SiO 2 nanofibers with a chemical plating method to form sensitive interdigital electrode sensors, then use an in situ thermal reaction strategy to form conformal and interlocked Au 3 Cu and CuSiO 3 interphases, which enhance the mechanical thermal stability of the ceramic-metal contact. With deep learning technique, the as-fabricated intelligent pressure tactile gloves can accurately recognize the human body parts in low-visible burning environments and show a long-term stability over 1000 cycles with a high sensitivity of 112.18 kPa −1 , which is important for developing intelligent firefighting.
研究领域:
材料科学
·
传感器技术
·
智能设备
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2024
·
IF 9.7
Zhenzhu Zhou,Zhihao Zhang,Junchao Huang,Yuhua Wang
Fire resistance of steel structures is crucial to building safety to maintain structural integrity and avoid secondary damage (building collapse), when facing fire hazards . High temperature in fire rapidly softens the steel structure which fails to afford the load bearing. Water-based intumescent coating is now one of the most prospective treatments as it is excellent fire resistant, environmentally friendly, and economically effective. However, the poor density and thermal stability of its char residue make it difficult to be competent in a real fire. In this work, an organic-modified glass fiber grafted with 10-(2, 5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide and γ -(2, 3-epoxypropoxy) propyltrimethoxysilane (ODOPB@KH560@GF) was prepared as the filler for the intumescent fire resistance coating containing ammonium polyphosphate/melamine/pentaerythritol (APP/MEL/PER) and water-based acrylic latex. The ODOPB@KH560@GF was found to enhance the thermal stability of the char layer and decrease the peak heat release rate and total heat release by 60.5 % and 58.8 % in a dosage of 5 wt % (AL-4). Also, the fire resistance limit of the steel plate coated with AL-4 was twice as high as that of the unprotected steel plate and higher than that of the steel plate coated with a certain commercial coating, leading to further applications in the fire safety coating for steel structures.
研究领域:
材料科学
·
防火安全工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Lingyun Wu,Hongmingjian Zhang,Jiaming Li,Manxi Zhou,Xiaoping Yang,Gang Sui
Aerogels that possess ultrahigh fire-resistance and excellent elasticity are highly demanded for applications in extreme environments. In the reported strategies for improving the fire resistance of polymeric aerogels, the good elasticity of these aerogels is hardly maintained or even sacrificed. Herein, a fire-resistant and superelastic polymeric aerogel was synthesized via self-crosslinking polyimide molecules containing benzimidazole groups. Its outstanding fire-resistance against high temperatures (up to 1300 °C) was proved by flame insulation tests, where a commercial ceramic aerogel was damaged by the flame. Fire safety was further demonstrated by the low release of combustion heat and smoke. In addition, the aerogel exhibited superelasticity and excellent resilience through multiple mechanical tests of compression, bending and tension (1000 cycles). The excellent fire-resistance, along with the other superior properties, makes the polymeric aerogel very promising for applications in the field of thermal insulation under extreme conditions.
研究领域:
材料科学
·
高分子化学
·
纳米材料
·
防火安全
·
热力学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Rubber Research
·
2023
·Vol. 26
·期 5
·391-405
·
IF 1.3
Wang Xuebao,Huang Ao,Zhao Min,Li Jianhua,Li Sicheng,Li Xiaobin
Room temperature vulcanised (RTV) silicone rubber is widely used in daily life. Ordinary and traditional flame-retarding RTV silicone rubber are easy to turn into brittle char layer or ashes without any self-supporting and bonding ability after experiencing a combustion process, which could not inhibit the secondary disasters after fire. To improve the fire-resistance performances of RTV silicone rubber, a new single component ceramifiable RTV silicone rubber was prepared in this work. The tack-free time, mechanical properties and thermal properties of different formulations were tested. The flexural strength and adhesion strength of the ceramic residues were studied by orthogonal designed experiments, which exhibited the maximum of 8.80 and 0.300 MPa after sintering at 1000 °C, respectively. The ceramifying process of the single component ceramifiable RTV silicone rubber at high temperatures was also investigated. These results will provide a basis for the development of fire-resistant silicone adhesive with better performance that can meet the actual needs.
研究领域:
材料科学
·
防火材料
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2021
·
IF 8.528
Xiangyu Jin,Jianguo Xu,Yiwu Pan,Hebing Wang,Bin Ma,Feng Liu,Xiaojie Yan,Can Wu,He Huang,Haiming Cheng,Changqing Hong,Xinghong Zhang
Lightweight and multiscale nanocomposites are considered to be the most promising materials applied in the field of advanced aerospace and modern building industry, owing to their outstanding mechanical, thermal and flame-resistant properties served in high-temperature oxidizing environments. Herein, a novel siliconoxycarbide (SiOC) modified needle quartz fiber felt reinforced phenolic resin nanocomposite (SiQF/PR) with a hierarchical macro-/micro-/nano-scaled structure is reported. The as-prepared highly porous SiQF/PR nanocomposite exhibits a multiscale three-dimensional network and the micro-sized SiOC particles, derived from the hydrolysis of methyltrimethoxysilane (MTMS) and dimethyldiethoxysilane (DDS), are uniformly incorporated into the phenolic aerogel . The resultant nanocomposite has a bulk density of 0.30–0.35 g/cm 3 , and the maximum compressive strength reaches 4.20 MPa and 3.34 MPa in xy and z directions, respectively. Thermal stability and oxidation resistance experiments show that the SiQF/PR multiscale composite has a good ablation and heat insulation performance under oxyacetylene test condition, and the backside temperature of SiQF/PR is only 55.5 °C under 1.8mw/m 2 for 120 s, and line ablation rate of SiQF/PR multiscale nanocomposite decreases by 20.1% at 1.8 MW/m 2 and 59.5% at 0.4 MW/m 2 compared to non-SiOC modified composite. These results indicate that the lightweight SiQF/PR nanocomposite fabricated by this method is very suitable for architectural or aerospace applications as high-performance insulation material.
研究领域:
材料科学
·
航空航天工程
·
建筑技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Mengmeng Yang,Zhaofeng Chen,Lixia Yang,Yang Ding,Xiaoyang Chen,Manna Li,Qiong Wu,Tianlong Liu
Environmental noise has been regarded as major noise pollution with severe hazards to human physical and mental health. The common commercial fiber sound-absorption materials have insufficient low frequencies wave absorbing and fire-resistant ability, limiting their wide application. To solve these problems, a novel strategy combining flexible nanofibers and rGO/MXene nanosheets was proposed to fabricate rGO/MXene/SiO 2 nanofibers composite aerogel with hierarchically porous structure, which possessed an extremely low density of 9.8 mg/cm 3 and superior low-frequency sound absorption ability (NRC value of 0.51). The obtained composite aerogel possessed a large deformation up to 80% (corresponding compressive stress of 17 kPa) and quickly recovered. In addition, the as-prepared aerogel could be easily produced on a large scale, providing a reference for the development of new generation of sound-absorbing products.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Jingfang Zhang,Zilong Liang,Jingxuan Liu,Yange Wan,Xin Tao,Haijun Zhang,Mingchao Wang
Aiming to improve the fire resistance, the synergistic effects of palygorskite and expandable graphite (EG) on water-based intumescent fire retardant (IFR) coatings were investigated in details by fire resistance test, limiting oxygen index (LOI) test, vertical burning (UL-94) tests, thermogravimetry (TGA)-differential scanning calorimeter (DSC) test, and cone calorimeter test. The char residues were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Brunauer-Emmett-Teller test (BET). The backside temperature of the substrate of sample 3-3 with 3 wt% of EG and 3 wt% of palygorskite addition (SP3-3) was recorded to be 150 °C after 120 min fire test, 46.5% lower than that of the sample 1 with no addition (SP1). The SP3-3 had the best fire retardant performance reflected by UL-94 V0 flammability rating and the LOI value as high as 35.8%. The TG-DSC analysis showed palygorskite can increase the thermal stability and decrease the decomposition rate of the coatings. The cone calorimeter test demonstrated SP3-3 remarkably reduce the value of peak heat release rate and peak smoke production release by 64.1% and 85.7%, respectively. The XRD analysis confirmed that the decomposition compounds of ammonium polyphosphate, fillers, and palygorskite can react and form a ceramic-like protective barrier, which enhanced the thermal stability and char yield. In addition, the SP3-3 had shown best results in char expansion and char morphology.
研究领域:
材料科学
·
消防安全工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）