Enhanced thermal stability and impact strength of phenolic formaldehyde resin using acid‐treated basalt scales

Li, Yan‐Chun; Tang, Kai‐Jun; Jin, Fan‐Long; Park, Soo‐Jin

doi:10.1002/app.52827

Cited by 9 publications

(4 citation statements)

References 45 publications

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“…Liu et al (2016) prepared BF-reinforced friction materials and found that when the content of BF was 12%, the wear was minimal and the noise performance was optimal. Li et al (2022) found that the thermal stability of phenolic resin reinforced by acid treated basalt flakes was significantly improved, The impact strength also reached 153% of the original phenolic resin. Kun et al (2023) found that the use of BF can improve friction stability while also improving the heat resistance of friction materials and limiting the friction fluctuation range to 0.040-0.110.…”

Section: Introductionmentioning

confidence: 93%

“…The composition of BF-reinforced resin-based friction material formula is shown in Table 1, with S01–04 as the experimental group. According to relevant research, (He et al , 2020; Kun et al , 2023; Li et al , 2022; Zhao et al , 2020), the content of BF gradually increases from 10% to 16%. S0 is the comparative group; BF is not added.…”

Section: Materials and Experimentsmentioning

confidence: 99%

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Study on the thermal decay mechanism of basalt fiber reinforced resin based friction materials

Fang,

Xiao,

Chen

et al. 2023

ILT

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Purpose Resin-based friction materials are the most widely used key materials in industry for braking and transmission. However, the friction coefficient of resin-based friction materials significantly decreases at temperatures above 300°C, which reduces their friction performance. Design/methodology/approach This study combines elevated-temperature mechanical experiments with friction and wear experiments to explain the thermal degradation resistance performance and temperature recovery performance of resin-based friction materials. It also investigates the influence of friction material strength and worn morphology on the friction coefficient of materials at elevated temperature. Findings The experimental results show that the increase in friction coefficient of friction materials below 300°C is mainly due to the increase in worn morphology characterization parameters, and the thermal degradation phenomenon above 300°C is mainly due to the decrease of shear strength of friction film. Basalt fiber can significantly improve the thermal degradation resistance of friction materials. The friction coefficient of basalt fiber-reinforced specimens after thermal degradation reaches 0.421–0.443, which is 19–25% higher than the original. The thermal decay rate is 9.03–11.0%, which is 7.9–9.87% lower than the original. Moreover, the friction coefficient has good cooling recovery performance. Originality/value Revealed the thermal degradation mechanism of resin-based friction materials, verified that basalt fibers can improve the thermal degradation resistance of friction materials and provided reference for the development of new friction materials.

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Section: Introductionmentioning

confidence: 93%

Section: Materials and Experimentsmentioning

confidence: 99%

Study on the thermal decay mechanism of basalt fiber reinforced resin based friction materials

Fang,

Xiao,

Chen

et al. 2023

ILT

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“…[ 15 ] Notably, basalt scales (BS), one of the most abundant silicate minerals, demonstrate excellent thermal and chemical stability, as well as sound absorption, especially in mechanical and electrical insulating properties, due to their distinctive chemical composition and structure. [ 16 , 17 , 18 , 19 , 20 ] Nevertheless, BS have not been utilized in the electrical insulating field despite their outstanding physical and chemical properties. Assembling BS with ANF to fabricate the composite micropapers may be a promising way to fully realize their inherent potential.…”

Section: Introductionmentioning

confidence: 99%

Novel Fabrication of Basalt Nanosheets with Ultrahigh Aspect Ratios Toward Enhanced Mechanical and Dielectric Properties of Aramid Nanofiber‐Based Composite Nanopapers

Ji,

Song,

Lyu

et al. 2023

Advanced Science

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The rapid development of modern electrical equipment has led to urgent demands for electrical insulating materials with mechanical reliability and excellent dielectric properties. Herein, basalt nanosheets (BSNs) with high aspect ratios (≈780.1) are first exfoliated from basalt scales (BS) through a reliable chemical/mechanical approach. Meanwhile, inspired by the layered architecture of natural nacre, nacre‐mimetic composite nanopapers are reported containing a 3D aramid nanofibers (ANF) framework as a matrix and BSNs as ideal building blocks through vacuum‐assisted filtration. The as‐prepared ANF‐BSNs composite nanopapers exhibit considerably enhanced mechanical properties with ultralow BSNs content. These superiorities are wonderfully integrated with exceptional dielectric breakdown strength, prominent volume resistivity, and extremely low dielectric constant and loss, which are far superior to conventional nacre‐mimetic composite nanopapers. Notably, the tensile strength and breakdown strength of ANF‐BSNs composite nanopapers with a mere 1.0 wt% BSNs reach 269.40 MPa and 77.91 kV mm−1, respectively, representing an 87% and 133% increase compared to those of the control ANF nanopaper. Their properties are superior to those of previously reported nacre‐mimetic composite nanopapers and commercial insulating micropapers, indicating that ANF‐BSNs composite nanopapers are a highly promising electrical insulating material for miniaturized high‐power electrical equipment.

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“…In the research field of heavy anti-corrosion coatings, inorganic scaletype filler has a wide range of applications, and is more comprehensive and effective to meet the performance requirements of anti-corrosion coatings modifiers [20,22,23]. Compared to the traditional glass flake and other fillers, basalt flake filler type anti-corrosion coatings not only have a stronger filling effect and physical shielding effect, but their environmental economics can further reduce the cost of coatings [24,25]. Yan et al [26] added basalt flakes to a solvent-free epoxy resin and showed that the coating with 10% basalt flakes added had the best corrosion protection.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Silane Coupling Agent Modified Basalt Flake Polyurethane Anti-Corrosion Coatings

Sun,

Cai,

et al. 2023

Coatings

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Strong corrosive atmospheric environments of level C4–C5 have a serious safety impact on steel structures and industrial production. The use of anti-corrosion coatings is the most economical and efficient way of all means of anti-corrosion. To further improve the anticorrosion performance of polyurethane anticorrosion coatings, this paper adopts KH-560 silane coupling agent to modify basalt flake and add it as filler into one-component polyurethane resin with wet curing characteristics. Anti-corrosion coatings were prepared by combining pre-dispersion and high-speed dispersion. The prepared coating specimens were sprayed onto Q235 plates and tinplate plates by simple spraying. Test results show that the addition of modified basalt flakes (MBFs) helps to improve the mechanical and corrosion resistance of the coating. When 30% MBFs were added, the mechanical properties, acid and alkali resistance, and corrosion resistance of the coating reached the best, and the aging resistance was good. Among them, the adhesion of the coating could reach 15.36 MPa, and the coating surface did not show obvious flaring and peeling phenomenon after 1000 h of neutral salt spray test. The water contact angle of the coating increased from 77.77° to 81.31°. Meanwhile, the anti-corrosion performance of the base coating in 3.5 wt% NaCl solution was investigated using electrochemical impedance spectroscopy (EIS). The corrosion current density of the added modified basalt scale coating was in the order of 10−6, which was enhanced by one order of magnitude compared to that of the unmodified basalt scale. The annual corrosion rate of the MBFs coating was only 0.076588 mm·a−1. The superior anticorrosive properties of silane coupling agent-modified basalt flake composite coatings provide a new meaning for the development of anti-corrosive coatings.

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Enhanced thermal stability and impact strength of phenolic formaldehyde resin using acid‐treated basalt scales

Cited by 9 publications

References 45 publications

Study on the thermal decay mechanism of basalt fiber reinforced resin based friction materials

Study on the thermal decay mechanism of basalt fiber reinforced resin based friction materials

Novel Fabrication of Basalt Nanosheets with Ultrahigh Aspect Ratios Toward Enhanced Mechanical and Dielectric Properties of Aramid Nanofiber‐Based Composite Nanopapers

Preparation and Properties of Silane Coupling Agent Modified Basalt Flake Polyurethane Anti-Corrosion Coatings

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