Thermal insulation and hydrophobization of wood impregnated with silica aerogel powder

Chen, Hong; Zhang, Yutian; Zhong, Tuhua; Wu, Zhihui; Zhan, Xianxu; Ye, Jiaoyou

doi:10.1186/s10086-020-01927-7

Cited by 26 publications

(13 citation statements)

References 15 publications

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“…A very strong linear relationship between contact angle and aerogel content was observed. This could be mainly due to the introduction of the strong hydrophobic silica aerogel and the gradual increase in the number of hydrophobic groups present on the aerogel surface, which agrees well with previous studies [ 35 , 36 , 37 ]. In addition, the hydrophobicity of the electrosprayed materials strongly relied on surface roughness, which varied when different contents of aerogels were applied as mentioned above.…”

Section: Resultssupporting

confidence: 92%

Preparation and Characterization of Electrosprayed Aerogel/Polytetrafluoroethylene Microporous Materials

et al. 2021

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This paper presents the preparation of aerogel/polytetrafluoroethylene (PTFE) microporous materials via needleless electrospray technique, by using an aqueous dispersion of polytetrafluoroethylene as the basic spinning liquid. Different contents of aerogel powders were applied to the spinning liquid for electrospraying to investigate the effect on the structural characteristics and various properties of the materials. Cross-section, surface morphology, and particle size distribution of the electrosprayed materials were examined. Surface roughness, hydrophobicity, and thermal conductivity were evaluated and discussed. The results showed that the electrosprayed aerogel/PTFE layers were compact and disordered stacking structures composed of spherical particles with a rough surface. As the aerogel content increased, the electrosprayed materials demonstrated increased surface roughness and improved surface hydrophobicity with a contact angle up to 147.88°. In addition, the successful achievement of thermal conductivity as low as 0.024 (W m−1 K−1) indicated a superior ability of the prepared aerogel/PTFE composites to prevent heat transfer. This study contributes to the field of development of aerogel/PTFE composites via electrospray technique, providing enhanced final performance for potential use as thermal and moisture barriers in textiles or electronic devices.

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Section: Resultssupporting

confidence: 92%

Preparation and Characterization of Electrosprayed Aerogel/Polytetrafluoroethylene Microporous Materials

et al. 2021

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“…Nanomaterials are the most popular modified materials in recent years [ 19 ] and have been applied to many modifiers, such as paints [ 20 , 21 ], wood, etc. It has been confirmed that nano-SiO 2 can improve the mechanical properties of wood [ 22 , 23 ] and dimensional stability [ 24 ], and some scholars have also used SiO 2 to improve the hydrophobicity and thermal insulation of wood [ 25 ]. Inspired by these aspects, in this study, nano-SiO 2 was added to the urea-formaldehyde resin to impregnate the fast-growing poplar, and the integrated technology of impregnation enhancement and high-temperature heat treatment was used for modification.…”

Section: Introductionmentioning

confidence: 99%

Effects of High-Temperature Heat Treatment Modification by Impregnation on Physical and Mechanical Properties of Poplar

Xue

Zhou

et al. 2022

Materials

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To expand the application range of fast-growing poplar, a modification method of poplar impregnated with nano-SiO2 and urea-formaldehyde resin was proposed in this study. Taking the mass ratio of nano-SiO2 mass to the solid content of urea-formaldehyde resin impregnation solution (W), high-temperature (H), and high-temperature time (T) as influencing factors, the effects of impregnation high-temperature heat treatment modification on the physical and mechanical properties of fast-growing poplar were explored. At the same time, the weight loss rate, oven-dry density, dry shrinkage properties, swelling properties, modulus of rupture (MOR), and modulus of elasticity (MOE) of the modified poplar were measured. The research results show that both the weight loss rate and the coefficient of variation of the oven-dry density have a high correlation with the temperature; the high-temperature immersion heat treatment can reduce the dry shrinkage and swelling of poplar, improve the dimensional stability, MOR, and MOE. W is 0–1%, H is 160 °C, and T is 2–4 h. The impregnated heat-treated wood has good MOR and MOE. Therefore, the combination of nano-SiO2 and urea-formaldehyde resin impregnation and heat treatment to modify poplar can improve some physical and mechanical properties of fast-growing poplar, expand the use of poplar, increase its added value, and realize high-value utilization.

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“…As a result, the interior decoration of buildings becomes a system project that can o er a number of decorative materials and products [2]. At the same time, they can be customised and produced according to the needs and environmental requirements of the user in order to create a perfect artistic space [3]. It is a cross-regional, cross-sectoral, multi-product, high-technology emerging industry.…”

Section: Introductionmentioning

confidence: 99%

Interior Design Effectiveness Modelling for Public Buildings with BIM-Based Technology

Zhu

2022

Mobile Information Systems

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In recent years, with the continuous development of urbanisation, the proportion of interior design in public buildings has been increasing year by year. At the same time, there is a tendency in many places for the interior spaces of public buildings to be upscale and retro. This indicates that people are paying more and more attention to the spiritual aspect of their lives, in addition to the materialistic pursuit of enjoyment. The current phenomenon of overdecoration in society can lead to excessive luxury and wastefulness. In these wasteful interiors, the beauty of the building itself is lost. In addition, this type of interior design is not only expensive but also poses certain safety risks to some extent. In the modern society, public buildings are essential places for public activities. To be specific, they are closely linked to public services and social management attributes. As a result, public buildings usually play a decisive role in facilitating communication and cooperation between various persons. Thus, the construction requirements of public buildings are currently increasing and the structural shapes of buildings are becoming more complex. In addition, the level of technology and the use of public buildings are becoming increasingly demanding. As a result, it is quite important to examine how modern and emerging technologies can be applied to public building design in order to improve its effectiveness. At the same time, with the continuous and rapid development of China’s economy and the promotion of the concept of environmental protection, the greening of public buildings has become an object of concern and research. There are many different types of existing public buildings in China, and in the design process, the energy consumption of the building throughout its life cycle and its impact on the surrounding environment are not fully considered, resulting in problems such as high energy consumption and poor indoor comfort in the actual use of the building. However, the demolition and reconstruction of buildings can lead to waste of resources and environmental pollution. Therefore, it is feasible and necessary to study the application of green building technologies in the design of public buildings. This study models the effectiveness of public building interior design based on BIM technology from the perspective of integrated design as well as parametric design. This model enables the interior design of public buildings to become energy efficient, emission reducing, and environmentally sustainable. After all, the integration of architecture and interior design can reduce unnecessary decorative waste. In addition, this model can also respond to the government’s efforts to develop an ecological civilisation, creating a new way of living that is resource efficient.

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Thermal insulation and hydrophobization of wood impregnated with silica aerogel powder

Cited by 26 publications

References 15 publications

Preparation and Characterization of Electrosprayed Aerogel/Polytetrafluoroethylene Microporous Materials

Preparation and Characterization of Electrosprayed Aerogel/Polytetrafluoroethylene Microporous Materials

Effects of High-Temperature Heat Treatment Modification by Impregnation on Physical and Mechanical Properties of Poplar

Interior Design Effectiveness Modelling for Public Buildings with BIM-Based Technology

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