Article
Chemistry, Multidisciplinary
Jindong Huang, Hong Chen, Guanglu Zhang, Xiaowei Fan, Juncheng Liu
Summary: The effects of the dosage of silane coupling agent KH-560 on the structure and performance of PI/SiO2 composite film were investigated. The results show that the addition of KH-560 increases the transmittance and thermal stability of the sample but has little effect on its ability to resist ultraviolet radiation.
Article
Materials Science, Composites
Feng Gao, Jiahao Shi, Xiaorui Zhang, Xuan Wang, Ling Weng, Xue Sun, Lida Yu, Chenhao Li
Summary: This paper investigates the synergistic modification of Bismaleimide resin (BMI) using hyperbranched polyimide (HBPI) and nano-SiO2 to improve its performance. The experiments show that significant improvements in impact strength, fracture toughness, and glass transition temperature were achieved at the addition of 40 wt% of HBPI and 3 wt% of nano-SiO2.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
Xiaoping Ji, Siqi Wang, Bingchen Yao, Wei Si, Chaohui Wang, Tongda Wu, Xueyuan Zhang
Summary: This study presents nano-SiO2 modified microcapsules prepared by in-situ polymerization to improve their performance. The optimal preparation parameters were determined, and the properties of the prepared microcapsules were evaluated. The results showed that the addition of nano-SiO2 can obviously improve the performance of microcapsules.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Tian Su, Ting Wang, Zhaochuan Zhang, Xiao Sun, Shangwei Gong, Xuefeng Mei, Zhenyu Tan, Shenao Cui
Summary: In this study, the effects of nano-SiO2 on the properties and mechanical properties of recycled brick aggregate concrete were investigated. The results showed that nano-SiO2 can effectively improve the performance of recycled brick aggregate and enhance the mechanical properties of the concrete.
NANOTECHNOLOGY REVIEWS
(2023)
Article
Engineering, Environmental
Danyang Wu, Nanxi Dong, Ruihan Wang, Shengli Qi, Bingxue Liu, Dezhen Wu
Summary: A new high-performance PI/SiO2 composite separator with excellent flame retardant, mechanical properties, and thermal stability has been developed. This hybrid separator outperforms traditional ceramic modified separators, showing higher tensile strength, low contact angle, and great thermal stability. It significantly enhances the capacity and cycle stability of batteries, providing a new strategy for preparing high-performance non-flammable organic-inorganic composite separators.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Construction & Building Technology
Harun Tanyildizi, Ahmet Coskun, Maksut Seloglu
Summary: This study examined the effect of nano SiO2 on the mechanical properties of underwater geopolymer mortar. The results showed that the addition of 0.5% nano SiO2 resulted in the highest compressive strength among the underwater geopolymer mortar samples, and this strength was well retained at room temperature.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Peng Zhang, Qiaoyi Han, Jingjiang Wu, Yong Zhang, Tianhang Zhang
Summary: The effects of nano-SiO2, heating temperatures, and cooling measures on the physical, mechanical, and microscopic properties of engineered cementitious composites (ECC) after exposure to high temperatures were evaluated. The addition of nano-SiO2 effectively enhanced the mechanical characteristics of the composites at lower temperatures, but the performance decreased at higher temperatures. The cooling measures also influenced the appearance and strength of the composites after exposure to high temperatures.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Mechanics
Jingjing Shen, Hongbin Yang, Dexin Liu, Wanli Kang, Haizhuang Jiang, Jiting Hao, Huazheng Wang, Zhiqi Lv, Sarsenbek Turtabayev
Summary: This study successfully synthesized a series of nano-SiO2 grafted modified polymers (MNSP) through controllably modifying nano-SiO2, and analyzed the rheological properties of MNSP. The influence of the concentration and modification degree of nano-SiO2 on the rheological properties of MNSP was explored from a microscopic standpoint. The addition of modified nano-SiO2 improved the solution viscosity of MNSP, but excessive addition interfered with polymerization and resulted in inferior polymer characteristics.
Article
Polymer Science
Hao Chen, Lin Li, Wei Zhao, Xiao-Rui Zhang, Ling Weng
Summary: This paper studied the effect of field strength on the corona-resistant lifespan of a composite film and the effect of doping on the dielectric properties of the composite film. The results showed that the introduction of nano-SiO2 particles could greatly improve the corona-resistant lifespan of the material.
Article
Construction & Building Technology
Jiaqi Yun, Chuang Zhao, Xuhui Li, Haoya Liu, Baochang Liu
Summary: In this study, a high-strength oil-well cement was prepared with hybrid nanosilica (NS) and nanohexagonal boron nitride (h-BN) additives to reduce environmental pollution and extend the lifetimes of oil wells. The addition of NS/h-BN was found to enhance the mechanical strength of the cement. The optimal ratio of nanomaterials was determined to be 2.5 wt% NS and 0.5 wt% h-BN, resulting in increased compressive, flexural, and splitting tensile strengths compared to the blank group.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Junliang Zhao, Kangning Song, Zhongkun Wang, Dongyan Wu
Summary: This paper studied the effects of nano-silica dioxide (NS) and steel fibers (SF) on the performance of high-volume fly ash cement mortar. The results showed that the combined addition of NS and SF significantly improved the flexural and compressive strength of the mortar, and reduced water absorption. Additionally, the hybrid addition of NS and SF enhanced the sulfate resistance of the mortar and refined its pore structure.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Composites
Xue Cui, Rong-rong Zheng, Jing-ying Wang, Shu-wu Chen, Yang Yu, Li-ying Guo, Cheng Wang, Li-yan Wang, Xuehua Ruan
Summary: Mesoporous low dielectric polyimide films were prepared by incorporating controlled hollow mesoporous SiO2 nanomicrospheres. The addition of hollow mesoporous SiO2 improved the thermal stability, mechanical properties, and hydrophobicity of the composite films, leading to a decrease in dielectric constant.
POLYMER COMPOSITES
(2023)
Article
Engineering, Chemical
Yinfu Luo, Long Ni, Xueqin Zhang, Xinyue Jiang, Huawei Zou, Shengtai Zhou, Mei Liang, Pengbo Liu
Summary: Rigid polyimide foams with excellent compressive and thermal properties were fabricated by thermal foaming, and the melt viscosities played a crucial role in improving foam cell interactions and mechanical properties.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Construction & Building Technology
Ting Zhang, Baoguo Ma, Siyao Wu, Zihao Jin, Jie Wang
Summary: This study investigated the use of steel slag and nano-SiO2 to produce low-heat cement, exploring factors such as hydration process, early strength, and pore structure. The results demonstrated that nano materials are efficient in promoting the early strength of low-heat cement.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Mechanical
Cunao Feng, Yu Guo, Zhenyang Yu, Kai Chen, Dagang Wang, Xiaowei Li, Yong Luo, Qingliang Wang, Dekun Zhang
Summary: An anti-wear filler of SCF-MoS2 was synthesized by hydrothermal method and blended with nano-SiO2 to enhance the mechanical and tribological properties of PEEK composites. The addition of SCF-MoS2 increased the elastic modulus and tensile strength of the composites, while reducing the friction coefficient and wear rate. The composites also exhibited good tribological properties in a simulated coal mine environment.
TRIBOLOGY INTERNATIONAL
(2023)