Comprehensive Analysis of the Effect of Polyisobutylene (PIB) Molecular Weight on Damping Properties of Butyl-Based Constrained Layer Damping Systems
پذیرفته شده برای ارائه شفاهی ، صفحه 1-5 (5)
کد مقاله : 1130-ISAV2024 (R1)
نویسندگان
1مدیر تحقیق و توسعه
2کارشناس تحقیق و توسعه
چکیده
This paper investigates the effects of combining high molecular weight polyisobutylene (HMW PIB) and low molecular weight polyisobutylene (LMW PIB) on the performance of butyl-based con-strained layer damping (CLD) systems. By formulating a series of PIB blends, this study examines how different combinations of HMW and LMW PIB influence critical mechanical and damping properties for noise, vibration, and harshness (NVH) applications. The results reveal that higher proportions of HMW PIB significantly enhance mechanical and adhesion strength, while increased LMW PIB weight percentage leads to improved damping behavior, resulting in superior energy dissipation and damping efficiency. Notably, Sample A demonstrates a balanced performance with commendable mechanical integrity and effective damping capabilities. In contrast, Sample B excels in damping properties due to its higher LMW PIB weight percentage, making it ideal for applications requiring optimal NVH control, while Sample C, with its robust mechanical characteristics, shows weaker damping efficiency. This research provides valuable insights for the design and application of advanced damping materials, highlighting the importance of optimizing the combination of HMW and LMW PIB to develop high-performance solutions in the automotive, aerospace, and construction industries, where effective vibration control is essential.
کلیدواژه ها
Title
Comprehensive Analysis of the Effect of Polyisobutylene (PIB) Molecular Weight on Damping Properties of Butyl-Based Constrained Layer Damping Systems
Authors
Zahra Pourakbar, Atiyeh Amirafshar
Abstract
This paper investigates the effects of combining high molecular weight polyisobutylene (HMW PIB) and low molecular weight polyisobutylene (LMW PIB) on the performance of butyl-based con-strained layer damping (CLD) systems. By formulating a series of PIB blends, this study examines how different combinations of HMW and LMW PIB influence critical mechanical and damping properties for noise, vibration, and harshness (NVH) applications. The results reveal that higher proportions of HMW PIB significantly enhance mechanical and adhesion strength, while increased LMW PIB weight percentage leads to improved damping behavior, resulting in superior energy dissipation and damping efficiency. Notably, Sample A demonstrates a balanced performance with commendable mechanical integrity and effective damping capabilities. In contrast, Sample B excels in damping properties due to its higher LMW PIB weight percentage, making it ideal for applications requiring optimal NVH control, while Sample C, with its robust mechanical characteristics, shows weaker damping efficiency. This research provides valuable insights for the design and application of advanced damping materials, highlighting the importance of optimizing the combination of HMW and LMW PIB to develop high-performance solutions in the automotive, aerospace, and construction industries, where effective vibration control is essential.
Keywords
Constrained Layer Damping, Butyl Rubber, Polyisobutylene, Noise Vibration Harshness