Work

Organically Modified Layered Double Hydroxide for Enhancing Aging Resistance of Styrene–Butadiene Rubber

Year: 2025

Type: article

Abstract: As styrene–butadiene rubber (SBR) is widely used and tends to age, the performance improvement in aging resistance is greatly important to rubber industrial fields. To this end, this study considered using layered double hydroxides (LDHs) as inorganic fillers and subsequently modified them by silane coupling agent KH−580 to obtain organically functionalized LDHs (m−LDHs) for solving the compatibility and aging concerns. The modified fillers were incorporated into styrene–butadiene rubber (SBR) to prepare m−LDHs/SBR composites. To evaluate their aging resistance, both SBR and m−LDHs/SBR samples were subjected to ultraviolet (UV) accelerated aging tests. Comprehensive characterizations were carried out using Fourier−transform infrared spectroscopy (FT−IR), thermogravimetric analysis (TGA), and standard mechanical property testing. FT−IR confirmed the successful grafting of KH−580 onto LDHs surfaces, while TGA demonstrated a ~50 °C increase in decomposition temperature of the modified SBR compared to the pristine sample, indicating enhanced thermal stability. Mechanical performance, including tensile strength, elongation at break, and hardness, was better retained in m−LDHs/SBR after aging, revealing the role of m−LDHs as both UV shielding and interfacial reinforcing agents. These findings highlight the potential of surface−functionalized LDHs as multifunctional fillers to enhance the durability and service lifetime of rubber materials.

Source: Applied Sciences

DOI: 10.3390/app152010971

Authors: Jingxuan Hu, Nannan Yang, Xiong Xu

Institutions: Wuhan Institute of Technology, Wuhan University of Technology

Language: English

Topic: Polymer Nanocomposites and Properties

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: Wuhan Institute of Technology