4.4 Article

Green Synthesis of Waterborne Polyurethane for High Damping Capacity

Journal

MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 222, Issue 6, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.202000457

Keywords

damping performance; environmentally friendly; polyurethane; structural adjustment

Funding

  1. National Natural Science Foundation of China [51773171, 21705135]
  2. Fujian Provincial Department of Science and Technology [2017J06019]
  3. NUS AcRF Tier 1 [R-144-000-416-114]
  4. 111 project [B16029]
  5. Doctoral Fund of the Ministry of Education [20130121110018]
  6. Science and Technology Project of Xiamen City [3502Z20183012]
  7. Science and Technology Planning Project of Guangdong Province [2018B030331001]
  8. 1000 Talents Program from the Xiamen University

Ask authors/readers for more resources

By adjusting the ratio of soft and hard segments, reinforced waterborne polyurethane damping materials with enhanced damping capacity were developed in this study. The ultimate samples demonstrated over 90% damping capacity and toughness exceeding other materials, paving the way for kinetic energy buffering and impact reduction.
Damping materials have application prospects in shock absorption and noise reduction due to their ability to convert vibration into other forms of energy dissipation. Although there have been tremendous attempts to prepare materials with high damping performance, it is still a challenge to fabricate materials with excellent mechanical properties and stability while maintaining a high energy dissipation capacity. Herein, damping materials of reinforced waterborne polyurethane by adjusting the ratio of soft and hard segments is reported. As the content of hard segments increases, the content of hydrogen bonds interaction between segments increases and the phase boundaries on the microscopic morphology form which obviously enhances the damping capacity. The ultimate samples exhibit a damping capacity of more than 90% and a toughness of 14.8 MJ m(-3), maintaining good toughness while exceeding the damping capacity of the most reported materials. The damping mechanisms are summarized into three aspects, the frication among soft segments, the destruction of hydrogen bonds, and the interface friction between soft and hard domains. This work paves an avenue for the application of waterborne polyurethane materials in kinetic energy buffering and impact reduction.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available