Inorganic-Polymer Glass Interleavants for Adhesion and Spacing
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Solution Overview
Problem
Current glass interleavants, either non-biodegradable microplastics or natural biodegradables, fail to provide effective spacing between stacked glass sheets without environmental harm, as they either accumulate in the environment or are ineffective in humid conditions, and lack sufficient adhesion to glass.
Innovation Solution
A composition of inorganic interleavant particles with polymeric adhesion promoter particles, which are solid up to 100°C, have a compressive strength of at least 3 MPa, and a volumetric mass density less than 7.5 g/cm3, improving adhesion and structural rigidity while being biodegradable and environmentally sustainable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-biodegradable microplastics (LDPE, PMMA) are used as glass interleavants, then adhesion to glass and ease of removal are improved, but environmental harm and accumulation increase
Solution Approach 1:
The patent uses composite materials by combining biodegradable polymer particles (providing adhesion and environmental compatibility) with inorganic interleavant particles (providing spacing and structural properties). This composite approach allows the interleavant to adhere effectively to glass while being environmentally sustainable and biodegradable, resolving the contradiction between reliability and environmental harm.
2Object-affected harmful factors
If natural biodegradable materials (paper, wood flour, starch) are used as glass interleavants, then environmental sustainability is improved, but performance in humid conditions and adhesion deteriorate
Solution Approach 1:
The patent combines biodegradable polymer particles with inorganic interleavant particles to create a composite material that maintains the environmental sustainability of natural materials while adding the humidity resistance and adhesion properties of the polymer component. The inorganic particles provide structural integrity and spacing functionality, compensating for the weaknesses of natural materials in humid environments.
3Object-affected harmful factors
If biodegradable polymers (PLA, PBS) are milled to obtain suitable particle size, then biodegradability is improved, but particle size distribution and angularity worsen
Solution Approach 1:
The patent uses an intermediary approach by combining milled biodegradable polymer particles with inorganic interleavant particles. The inorganic particles serve as a mediator that provides the desired particle size distribution and spherical shape for effective interleaving, while the biodegradable polymer particles provide adhesion and environmental compatibility. This combination allows the system to achieve suitable particle characteristics without relying solely on the milling process.
4Object-affected harmful factors
If inorganic interleavant particles are used, then environmental sustainability and structural rigidity are improved, but adhesion to glass deteriorates
Solution Approach 1:
The patent merges inorganic interleavant particles with biodegradable polymer particles to create a composite interleavant system. The inorganic particles provide environmental sustainability and structural rigidity, while the polymer particles provide adhesion to glass. By combining these two components, the patent achieves both environmental sustainability and effective adhesion, resolving the contradiction between these two properties.
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 solution ensures effective spacing between glass sheets, maintains structural integrity under high temperatures, and reduces environmental impact by being easily removable without staining the glass, thus addressing the limitations of existing interleavants.
Implementation Method 1
use of inorganic interleavant particles with a polymeric adhesion promoter particle is able to increase the adherence of the inorganic interleavant particles
Data Source
AI summary
A glass interleavant particle composition for location between adjacent stacked glass sheets. The composition includes a) inorganic interleavant particles and b) polymeric adhesion promoter particles in which the inorganic particles are solid up to at least 100° C. have a compressive strength of at least 3 MPa and have a volumetric mass density less than 7.5 g/cm3 at 25° C.