Article
Construction & Building Technology
Haoyu Dou, Jin Bai, Hao Lu, Tingting Zhang, Lingxue Kong, Zongqing Bai, Wen Li
Summary: The addition of TiO2 in basalt fiber can effectively enhance its alkali resistance and mechanical properties. The presence of TiO2 reduces the viscosity of basalt melt and increases the tensile strength of the fiber. Moreover, TiO2 forms insoluble titanium hydroxide in the basalt fibers, reducing the weight loss in alkaline solution.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Polymer Science
Dilip Sen, Chitresh Nayak, K. G. Sudhakar, Shyam Birla
Summary: Hybrid composites made up of epoxy matrix infused with alkali-heat-treated sisal fibers as reinforcement and SiC particles as filler exhibit superior mechanical properties, suitable for critical engineering applications. The removal of organic material from sisal fibers through alkali treatment helps the matrix material fill voids, while SiC particles strengthen the fibers to withstand higher loads. Micrographic analyses further confirm the experimental findings.
Article
Construction & Building Technology
Raylane de Souza Castoldi, Lourdes Maria Silva de Souza, Felipe Souto, Marco Liebscher, Viktor Mechtcherine, Flavio de Andrade Silva
Summary: This study evaluated the effect of alkali treatment on sisal fibers and found that it can improve the fiber properties and enhance their effectiveness as reinforcement in cement-based matrices, while also being sustainable and suitable.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Textiles
Tesfamariam Teklu
Summary: The study examined the influence of different extraction methods on the physico-chemical, thermal, and mechanical properties of sisal fibers. Results showed that sisal fibers extracted by the chemical method had higher cellulose content and tensile strength compared to other extraction methods.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Construction & Building Technology
Yakov Lipatov, Sergey Gutnikov, Bogdan Lazoryak
Summary: The addition of lanthanum oxide increases the tensile strength of zirconium-rich basalt continuous fibers by 15-20%, lowers the production temperature, widens the production temperature range, improves their alkali resistance, and reduces cost significantly.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Textiles
Mengo. W. Kithiia, Munyasi M. David, Mutuli M. Stephen, Mumenya W. Siphila
Summary: The study found that untreated sisal fibers were more suitable reinforcement for unsaturated polyester resin compared to surface-modified fibers, as they could better withstand the thermal aging effect, showing a more significant improvement in mechanical properties.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Materials Science, Composites
Mallampati Somaiah Chowdary, Gujjala Raghavendra, M. S. R. Niranjan Kumar, Shakuntala Ojha, Pasala Mohan Kiran, Manoj Panchal
Summary: This study compares the mechanical properties of polyester and epoxy matrices reinforced with Sisal/S-Glass composites, and investigates the effects of nano clay addition. By fabricating composites with different wt% of nano clay, it is found that Epoxy/GSSG composites exhibit increased tensile and flexural strength, while Polyester/GSSG composites show higher tensile strength. The microstructural analysis suggests that the composites are suitable for structural applications in the aerospace sector.
POLYMER COMPOSITES
(2022)
Article
Mechanics
Milan Ferdinand, Robert Vardai, Thomas Lummerstorfer, Claudia Pretschuh, Markus Gahleitner, Gabor Faludi, Janos Moczo, Bela Pukanszky
Summary: Polypropylene composites with poly(ethylene terephthalate) fibers were prepared by injection molding at temperatures ranging from 190 to 260 degrees C. Increasing the processing temperature resulted in shrinkage of the fibers due to relaxation of orientation and recrystallization. These structural changes led to deterioration of the composite properties, reducing impact resistance to about 1 kJ/m2 at 260 degrees C. Heat setting of the PET fibers improved the crystalline structure, reducing shrinkage and improving composite properties even at high processing temperatures. PP composites modified with PET fibers are suitable for automotive structural materials, providing a stiffness of around 2 GPa and an impact resistance of over 20 kJ/m2 if processed at low temperatures.
COMPOSITE STRUCTURES
(2023)
Article
Polymer Science
Roberta Anastacia Palermo Fernandes, Pedro Henrique Poubel Mendonca da Silveira, Beatriz Cruz Bastos, Patricia Soares da Costa Pereira, Valdir Agustinho de Melo, Sergio Neves Monteiro, Neyda de la Caridad Om Tapanes, Daniele Cruz Bastos
Summary: Composites based on virgin and recycled polypropylene (PP and rPP) reinforced with sisal fibers were prepared by compression molding. The alkali treatment of sisal removed some amorphous materials from the surface. The density of the composites was suitable for lightweight automotive components. The hardness of rPP composites decreased slightly, while water absorption increased compared to PP. PP composites showed higher impact resistance than rPP. Alkali treatment significantly influenced the hardness of rPP and PP composites, and the addition of sisal improved the impact resistance of the composites.
Article
Chemistry, Physical
Qingbiao Wang, Xu Zhang, Dongya Jing, Zhongjing Hu, Yuanyuan Tian, Dong Wang, Wenxia Liu, Chenglin Tian, Zhenyue Shi, Keyong Wang
Summary: A new claw-shaped connector was designed and its performance was examined through experiments and numerical analysis in engineering applications. Significant conclusions were obtained.
Article
Construction & Building Technology
Jeong-Il Choi, Huy Hoang Nguyen, Sang Lyul Cha, Mo Li, Bang Yeon Lee
Summary: This experimental study explores the effects of different types of PE fibers and curing methods on the compressive strength and tensile behavior of calcium-based alkali-activated slag composites. The research found that the types of PE fibers significantly affected the properties of the composites and the interface properties between matrix and PE fibers depend on the types of PE fibers. Tension test results were explained through fiber-bridging analysis.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Textiles
Sivasubramanian Palanisamy, Kalimuthu Mayandi, Shanmugam Dharmalingam, Nagarajan Rajini, Carlo Santulli, Faruq Mohammad, Hamad A. Al-Lohedan
Summary: The tensile strength and fracture morphology of fibers extracted from Acacia Caesia bark were investigated for their potential use as reinforcement in polymer composites. The study found that fibers treated with 10% NaOH showed the highest tensile strength and exhibited various fracture morphologies.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Polymer Science
Zhenhua Wang, Weili Feng, Jiachen Ban, Zheng Yang, Xiaomin Fang, Tao Ding, Baoying Liu, Junwei Zhao
Summary: In this study, sisal-fiber-reinforced polypropylene (PP/SF) flame-retardant composites were prepared using the two-step melt blending method. An intumescent flame retardant (IFR) composed of silane-coated ammonium polyphosphate (Si-APP) and pentaerythritol (PER) was used. The PP/SF composite prepared by PP/SF secondary blending with IFR showed excellent flame-retardant performance, with a limited oxygen index of about 28.3% and passing the UL-94 V-0 rating (3.2 mm) in the vertical combustion test. The mechanical properties of the composites prepared using three different mixing processes were similar.
Article
Materials Science, Textiles
Xiong Xiao, Mingyang Cheng, Yucheng Zhong
Summary: Alkali treatment of flax fiber can enhance the performance of composite materials, with the optimum improvement in moisture absorption and mechanical properties achieved at a 5 wt. % NaOH concentration. Further increase in NaOH concentration leads to decreased hygrothermal durability and mechanical properties.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Materials Science, Characterization & Testing
Abera E. Bekele, Hirpa G. Lemu, Moera G. Jiru
Summary: The study investigates the effects of NaOH treatment on the properties of fibers collected from South-West Ethiopia. The results show that 5% and 10% NaOH treatment significantly improves the moisture absorption and diameter of the fibers, as well as the tensile strength of single fibers. Improving fiber properties enhances the mechanical properties of composites.
