Core-shell fillers represent an innovative class of fillers distinct from conventional fillers. This study explores the combined effects of filler contact, thermal contact resistance at the shell-matrix interface (R^*_s-m) and shell-core interface (R^*_c-s), core-to-shell volume fraction ratio (V_c/V_s), and core-to-shell thermal conductivity ratio (K_c/K_s) on the effective thermal conductivity of composites (k^*_eff). Through numerical simulation and experimental validation, the key mechanisms governing heat transfer in core-shell filler composites are elucidated: thermal contact resistance and filler contact exert a dominant regulatory effect on k^*_eff, while the influences of filler geometric dimensions and component thermal conductivities (K_c/K_s) are conditional on interfacial properties and threshold values. Notably, the proposed numerical model achieves high prediction accuracy by incorporating filler contact, comprehensively quantifies the interactive effects of previously neglected key factors and establishes a reliable predictive framework. The findings not only advance the fundamental understanding of heat transfer mechanisms in core-shell filler-filled composites but also provide crucial theoretical guidance for practical applications.

Inspired by the micro structure of loofah sponge in nature, this article successfully employs a biomimetic approach to develop a novel series of natural Eucommia rubber foamed materials with excellent shape memory properties. This article explores the characteristic features of natural Eucommia ulmoides rubber foamed materials, including the foaming process, mechanical properties, shape memory performance, and adsorption properties. This paper introduces the innovative use of natural Eucommia ulmoides rubber’s shape memory properties to create a temperature-responsive foam adsorbent material. The foamed material’s unique ability to modify its pore structure through simple compression and heating processes offers tailored adsorption speed and capacity for varied practical applications. The adjustable adsorption properties of this foamed material present novel opportunities for its utilization in adsorption applications.

Adding heterogeneous fillers with high thermal conductivity (TC) to polymer has been recognized as an effective way to increase the effective thermal conductivity (ETC) of polymer composites. Extensive researches have been conducted on the ETC of composites with heterogeneous fillers. However, the heat transfer enhancement mechanism of heterogeneous fillers remains unknown, and the combined effects of filler size, filler contact, interface thermal resistance (R_c) and other parameters on the ETC have not been explored. In this study, above combined effects are investigated. The results show that the filler contact and R_c are the key factors determining the ETC. The ETC of composite with filler contacts reaches 2.35 at filler content of 25%, which is 11.9% higher than that without filler contacts. The ETC also strongly depends on the R^*_c (dimensionless form of R_c) ratio (R^*_c1/R^*_c2) between two fillers, with it becoming asymmetrical when the amount of R^*_c(R^*_c1 + R^*_c2) is larger. The ETCs decrease with the increase of R^*_c1/R^*_c2 when the R^*_c1/R^*_c2<1, while they increase with R^*_c1/R^*_c2 when the R^*_c1/R^*_c2>1. When R^*_c1 + R^*_c2 is a constant, the ETC increases with the competing effects of R^*_c. The models with filler contacts exhibit higher accuracy than other classical models in calculating the ETC across the entire range of filler content.