Bio-Based Acoustic Damping Material With Reduced CO2 Footprint
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing acoustic damping materials have a high CO2 footprint due to petroleum-based raw materials and energy-intensive production processes, necessitating a transition to bio-based alternatives without compromising application-relevant properties.
Innovation Solution
A sustainable acoustic damping material comprising tall oil pitch, tackifying resin, thermoplastic polymer, and at least 15 wt.-% of solid particulate filler, which replaces bitumen-based materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If bitumen-based acoustic damping materials are used, then effective vibration and noise damping properties are achieved, but CO2 footprint is high due to petroleum-based raw materials
Solution Approach 1:
The patent changes the chemical composition parameters by replacing petroleum-based bitumen with bio-based tall oil pitch, while adjusting the formulation to include specific components (rosin 5-30 wt.%, ester 30-60 wt.%, thermoplastic polymer 5-20 wt.%, tackifying resin 5-20 wt.%) to maintain the damping performance despite the material substitution
Solution Approach 2:
The patent creates a composite material system combining multiple bio-based and synthetic components (tall oil pitch, rosin, esters, thermoplastic polymers, tackifying resins) to achieve both sustainability and effective damping properties, leveraging the synergistic effects of different material components
2Object-affected harmful factors
If bio-based alternatives replace petroleum-based materials, then CO2 footprint is reduced, but application-relevant properties may deteriorate
Solution Approach 1:
The patent optimizes the formulation parameters of bio-based materials by specifying precise weight ranges for each component (rosin 5-30 wt.%, ester 30-60 wt.%, thermoplastic polymer 5-20 wt.%, tackifying resin 5-20 wt.%) to ensure that the damping performance matches or exceeds that of conventional bitumen-based materials
Solution Approach 2:
The patent develops a composite formulation combining bio-based tall oil pitch with complementary materials (thermoplastic polymers, tackifying resins) to compensate for any performance deficiencies of individual bio-based components, achieving balanced sustainability and performance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The new material significantly reduces the CO2 footprint while maintaining effective vibration and noise damping properties.
Implementation Method 1
The layer of damping material is capable of dissipating kinetic energy of the vibrating surface into heat energy through extension and compression of the material of the damping layer
Data Source
Figure 1~3
AI summary
The invention relates to an acoustic damping material comprising: a) Tall oil pitch TOP, b) At least one tackifying resin TR, c) Optionally at least one thermoplastic polymer TP, and d) At least 15 wt.-%, preferably at least 25 wt.-% of at least one solid particulate filler F.