Fiber epoxy composite coating with fish scale like structure: providing new ideas for durability of polymer coatings through anti friction and wear-resistant design

Research Overview

According to the study published in Volume 222, Part A of Progress in Organic Coatings (January 2027), the author Hanyu Li、Xiaohua Jia、Yaotao Zhou、Mingyue Wang、Hongbo Liu、Zhiqiang Shan Haojie Song proposed a cellulose epoxy composite coating based on fish scale biomimetic structure, aiming to achieve both friction reduction and wear resistance in terms of tribological properties. This study belongs to the category of organic coating materials and formulation design, involving the construction of composite systems of cellulose and epoxy resin and surface structure design.

Key facts and data points

• Material system: cellulose and epoxy resin composite coating, designed with fish scale biomimetic structure.

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• Performance goal: Reduce friction coefficient and improve wear resistance, that is, balance friction reduction and wear resistance. Publication information: Progress in Organic Coatings, Volume 222, Part A, published in January 2027. Research Nature: Journal research paper focusing on the structural design and tribological properties of coating materials.

It should be noted that the source text only provides the title, journal issue, publication date, and author information, and does not provide specific details such as friction coefficient values, wear rates, filler ratios, curing conditions, or characterization methods.

. Therefore, this article does not make any inferences about the undisclosed data mentioned above.

Significance for the polymer additive industry

From the perspective of polymer aging and stabilization technology, the value of this study lies not in directly providing stabilizer formulations, but in indicating that coating durability is a multifactorial coupling problem.

. Friction and wear can damage the surface integrity of the coating, thereby altering the pathways of oxygen, moisture, and ultraviolet radiation, which is related to the oxidative degradation and photoaging behavior during polymer aging. For epoxy coatings exposed to long-term outdoor or dynamic contact conditions, both weather stability and wear resistance often need to be considered simultaneously. At the formulation level, cellulose is introduced into the epoxy system as a biobased component, which may alter the crosslinking density, surface morphology, and interfacial properties of the coating. These factors also affect the distribution and efficiency of the antioxidant system and HALS (hindered amine light stabilizer) in the matrix. If this type of biomimetic structural coating is intended for outdoor applications, the design of the composite system of UVA (UV absorber) and HALS needs to be re evaluated based on surface structural characteristics, rather than simply using the stabilization scheme of homogeneous coatings. In terms of processing stability, the dispersion and curing process of cellulose in epoxy systems may also affect the migration and consumption of additives, which deserves attention in subsequent formulation development. In addition, the biomimetic structural approach adopted in this study has methodological implications for the additive industry: regulating frictional behavior through surface microstructures may reduce reliance on traditional friction reducing fillers, thereby leaving greater formulation space for stabilizer systems. For coating products that pursue both weather stability and mechanical durability, the synergistic consideration of antioxidant system, light stabilization system, and structural design is closer to actual service requirements than optimizing a single additive.

Issues to be observed

Due to the lack of specific experimental data and characterization details disclosed by the source, the stabilization performance of the biomimetic structure coating under UV aging and thermal oxidative aging conditions is still unclear, and the influence of cellulose components on the degradation mechanism of epoxy matrix also needs further research.

. If this type of coating is included in the aging and stabilization evaluation system in the future, the coupling effect between friction and wear and photo oxidative aging, as well as the adaptability of the composite system under different surface structures, can be focused on.

Information source:Friction-reducing and wear-resistant cellulose-epoxy composite coating based on fish-scale biomimetic structures， Organized by Herun Chemical.