Work

A High‐Performance Damping Composite: Synergistic Wide Damping Temperature Range and Excellent Mechanical Properties Through an Interpenetrating Polymer Network

Year: 2026

Type: article

Abstract: ABSTRACT Damping composites can significantly mitigate the damage caused by vibration. However, traditional damping composites exhibit a narrow damping temperature range due to their single matrix, providing high damping performance only near the glass transition temperature ( T g ). The incorporation of multiple matrix materials through blending can simply and effectively broaden the damping temperature range; however, this approach typically results in poor mechanical properties due to inadequate compatibility between the matrix materials. This study prepared a damping composite by constructing an interpenetrating polymer network (IPN) by polyborosiloxane (PBS) and phenyl silicone rubber (PSR). PBS forms a physically cross‐linked network via dynamic B‐O bonds, contributing wide damping temperature range. PSR forms a secondary network through covalent cross‐linking, providing structural support and excellent mechanical properties. This synergistic combination results in IPN composites with outstanding damping performance and mechanical properties. The prepared damping composite maintains effective damping (tan δ > 0.3) across an ultra‐wide temperature range: from −77°C to −30°C and from 31°C to 225°C, demonstrating a 431% enhancement over the blank sample. The IPN composite demonstrates impressive mechanical performance: a tensile strength of 4.2 MPa and an elongation at break of 720%. This study provides a viable strategy for fabricating high‐performance damping composites.

Source: Polymer Engineering and Science

DOI: 10.1002/pen.70359

Authors: Xinyi Han, Kaili Zhao, Jinghao Hao, Hua Wang, Lin Zhu, Chuanjian Zhou

Institution: Shandong University

Language: English

Topic: Silicone and Siloxane Chemistry

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: Shandong University, Natural Science Foundation of Shandong Province, Key Technology Research and Development Program of Shandong

Awards: G3520142051, G4058033364, G6146539212