Gas Adsorbent Particle Strength via Composite Formulation
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Solution Overview
Problem
Conventional gas absorbent particles used in speaker boxes have low strength, leading to breakage and contamination of the front cavity, which negatively impacts acoustic performance due to their composition of powders, water, and adhesive.
Innovation Solution
A method of creating gas adsorbent particles by mixing porous powder, water, adhesive, and an additive agent with specific mass ratios, followed by spray shaping, drying, and screening to produce particles with enhanced strength, specifically within the diameter range of 350 to 450 micrometers, which are then used to fill the rear cavity of a speaker box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If gas absorbent particles are made by powders, water and adhesive, then the manufacturing cost is low, but the strength of the particle is relatively low
Solution Approach 1:
The patent uses composite materials by combining porous powder (molecular sieve), adhesive, water, and additive agents to create particles with improved strength. The specific formulation creates a composite structure that maintains both mechanical integrity and gas absorption functionality.
Solution Approach 2:
The patent applies parameter changes by controlling the mass ratios of components (porous powder:adhesive:water:additive agent = 1:(0.01-0.16):(0.5-8):(0.001-0.15)) and processing parameters (spray drying conditions, particle size 350-450 micrometers) to optimize particle strength while maintaining manufacturability.
2Reliability
If conventional gas absorbent particles are used, then the low frequency performance is improved, but the particles will be broken and contaminate the front cavity
Solution Approach 1:
The patent applies beforehand cushioning by pre-strengthening the particles through optimized formulation and processing before they are placed in the speaker box. This prevents breakage during operation and eliminates the harmful effect of contamination in the front cavity.
3Manufacturing precision
If the particle size is not controlled, then the manufacturing process is simple, but the acoustic performance is affected
Solution Approach 1:
The patent applies parameter changes by specifying a precise particle size range (350-450 micrometers) achieved through spray drying process control. This level of precision improves acoustic performance while the spray drying method itself remains a relatively simple and efficient process.
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 resulting gas adsorbent particles exhibit higher strength and improved acoustic performance by reducing the likelihood of breakage and contamination, thereby enhancing the low-frequency performance of the speaker box.
Implementation Method 1
The rear cavity is filled with gas adsorbent particles for adsorbing gas in the rear cavity
Implementation Method 2
obtained by mixing porous powder, water, adhesive and additive agent for obtaining sizing agent, and then by spray shaping, drying and screening the sizing agent
Implementation Method 3
obtained by mixing porous powder, water, adhesive and additive agent for obtaining sizing agent, and then by spray shaping, drying and screening the sizing agent
Data Source
AI summary
The present application discloses method for making air adsorbent particles. The method includes the steps of: providing and mixing porous powder, water, adhesive, and additive agent for obtaining sizing agent; obtaining air adsorbent particles by spray shaping, drying, and screening the sizing agent. The mass ratio between the porous powder, water, adhesive and the additive agent is 1:(0.5˜8):(0.01˜0.16):(0.001˜0.15). Particles obtained by the method of the present application have higher strength.