PSI - Issue 72

Muh. Linggar Adi Wardhana et al. / Procedia Structural Integrity 72 (2025) 418–426

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103°C for 3 hours to complete one soaking cycle, which was repeated for six cycles. The anti-corrosion test results demonstrate that the superhydrophobic wood remains stable, exhibiting excellent corrosion resistance, as illustrated in Figure 3. Additionally, the mechanical strength test results indicate a significant increase in the mechanical strength of wood treated with the superhydrophobic treatment, as shown in Figure 4. Specifically, the longitudinal compressive strength increased by 35.1% (from 27.3 MPa to 36.9 MPa), the radial compressive strength increased by 40.6% (from 5.0 MPa to 7.0 MPa), and the tangential compressive strength increased by 20.7% (from 3.4 MPa to 4.1 MPa). This enhancement is attributed to the polysiloxane network formed by the MTMS within the wood, reinforcing its structure and significantly improving its mechanical properties.

Fig. 3. Effect of cyclic soaking in (a) HCl solution with pH = 1; (b) NaOH solution with pH = 13 on the WCA and SA of superhydrophobic surfaces (Tang et al., 2023).

Fig. 4. (a) Compressive properties of wood before and after superhydrophobic modification; (b) Schematic diagram of the formation of polysiloxane network in SH-Wood (Tang et al., 2023). 3. Transparent Fireproof Coatings Wooden ship structures predominantly use wooden materials, making them susceptible to fire. Exposure to temperatures above 300 degrees Celsius can affect the strength and stiffness of the wood, leading to a reduction in cross-section and load-bearing capacity (Kolaitis et al., 2014; Just et al., 2012; Chorlton et al., 2021). Protecting the