Low-Binder Porous Adsorbent for Satellite Molecular Decontamination
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Solution Overview
Problem
Conventional methods for preventing molecular contamination in satellites, such as thorough cleaning and pre-launch thermal vacuum degassing, are costly and inefficient, and in-flight molecular adsorbents often cause particle contamination or have low mechanical strength, failing to effectively manage contamination during long-term use.
Innovation Solution
A novel porous material with a binder content less than 10% by weight, comprising zeolites or related porous solids, is developed in forms like pellets or beads, offering both high adsorption capacity and mechanical strength for effective molecular decontamination in the aerospace field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional pre-launch thermal vacuum degassing is used, then molecular contamination is reduced, but time and cost increase significantly
Solution Approach 1:
The patent applies preliminary action by incorporating molecular adsorbent materials directly into satellite components during manufacturing, so that contamination prevention is built-in from the start rather than requiring extensive post-manufacturing degassing treatments. This preliminary incorporation of functional materials eliminates the need for lengthy pre-launch thermal vacuum degassing cycles.
Solution Approach 2:
The molecular adsorbent materials perform self-service by automatically capturing and retaining contaminant molecules throughout the satellite's operational life without requiring external intervention or energy input. The materials continuously adsorb contaminants from the vacuum environment, providing ongoing contamination control without adding operational complexity.
2Object-affected harmful factors
If molecular adsorbents are implemented in flight, then contamination is controlled, but particle contamination and low mechanical strength occur
Solution Approach 1:
The patent employs composite materials by combining molecular adsorbent powders with binder materials to create mechanically robust components. The composite structure integrates the contaminant-capturing functionality of adsorbent materials with the structural integrity provided by binders, resolving the contradiction between adsorption capacity and mechanical strength.
Solution Approach 2:
The patent utilizes porous materials with controlled pore structures that provide high surface area for adsorption while maintaining mechanical integrity. The porous architecture allows abundant active sites for contaminant capture while the overall material structure retains sufficient mechanical strength for space applications.
3Strength
If binder content is increased to improve mechanical strength, then structural integrity improves, but adsorption capacity decreases
Solution Approach 1:
The patent applies parameter changes by optimizing the binder content to a specific range (5-20% by weight) rather than using excessive amounts. This controlled parameter adjustment achieves the minimum necessary mechanical strength while preserving maximum adsorption capacity. The patent also explores different binder types and their effects on overall performance.
Solution Approach 2:
The patent applies local quality by ensuring uniform distribution of binder material throughout the adsorbent composite, creating localized bonding zones that provide mechanical strength only where necessary. This localized approach minimizes binder content while maintaining structural integrity, leaving more adsorbent material available for contaminant capture.
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 material provides a compromise between excellent adsorption properties and mechanical resistance, significantly extending the lifespan of satellite components by effectively capturing and retaining molecular contaminants without causing particle contamination or mechanical failure.
Implementation Method 1
The present invention relates to a novel material comprising a porous material, and its use as molecular adsorbent
Data Source
AI summary
The present invention concerns a material comprising a porous material and at least one organic or inorganic binder, in which the quantity of binder is strictly less than 10% by weight relative to the total weight of said material. The present invention also concerns the method for preparing same and the uses thereof as a molecular adsorbent, in particular in the aerospace field.