Memory Device Housing Composites for Scratch, Heat, and ESD Control
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Solution Overview
Problem
Conventional plastics used in SSD, HDD, and RPG products are not highly recyclable, lack biodegradability, prone to scratching, and have undesirable thermal properties, leading to high rejection rates and regulatory challenges.
Innovation Solution
Development of housings using a thermoplastic and biodegradable filler or polymer composite with a multilayer coating, enhancing scratch resistance, thermal conductivity, and reducing electrostatic discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional plastics (PC, ABS, PC/ABS) are used for SSD enclosures and packaging, then manufacturing ease and structural integrity are maintained, but scratch resistance deteriorates and environmental sustainability worsens
Solution Approach 1:
The patent employs composite materials by combining biodegradable polymers (such as PLA, PHA, or starch-based polymers) with natural fibers (cellulose, wood flour, or bamboo fibers) to create a hybrid composite that provides both structural integrity and improved scratch resistance while maintaining environmental sustainability. This composite approach resolves the contradiction by achieving reliable performance without relying on conventional plastics that are prone to scratching and lack biodegradability.
Solution Approach 2:
The patent modifies material parameters by adjusting the composition ratios of biodegradable polymers and natural fibers, optimizing crystallinity, cross-linking density, and surface treatment parameters to enhance scratch resistance. By changing these physical and chemical parameters, the material achieves improved durability while maintaining ease of manufacture through established composite processing techniques.
2Reliability
If hybrid plastics with biodegradable content are used, then environmental sustainability is improved, but thermal properties deteriorate due to low heat deflection temperature and low thermal conductivity
Solution Approach 1:
The patent utilizes composite materials incorporating thermally conductive fillers such as aluminum oxide, boron nitride, or graphite particles within the biodegradable polymer matrix. These fillers create thermal pathways that enhance heat dissipation while the biodegradable polymer provides structural support. This composite structure simultaneously improves thermal conductivity and maintains adequate heat deflection temperature, resolving the thermal property deficiencies of pure biodegradable plastics.
Solution Approach 2:
The patent applies local quality enhancement by concentrating thermally conductive fillers in specific regions where heat generation occurs, such as near processors or storage chips in SSD enclosures. This localized reinforcement of thermal pathways optimizes heat management where needed most while maintaining the overall biodegradable and sustainable character of the housing material.
3Reliability
If coatings are applied for cosmetic purposes, then appearance quality is improved, but scratch resistance for enclosure applications deteriorates
Solution Approach 1:
The patent integrates scratch-resistant properties directly into the composite material matrix by incorporating hard particles such as silica, alumina, or diamond-like carbon coatings within the biodegradable polymer composite. This internal reinforcement provides scratch resistance without requiring separate external coating layers, thereby maintaining device complexity at acceptable levels while achieving the desired reliability in terms of scratch resistance.
Solution Approach 2:
The patent merges the functions of structural integrity, thermal management, and scratch resistance into a single integrated composite material system. By combining biodegradable polymers, natural fibers, and thermally conductive fillers in one material formulation, the patent eliminates the need for separate coating layers, thereby reducing device complexity while maintaining or improving scratch resistance through the inherent properties of the composite structure.
4Reliability
If single-use plastics are used for packaging and enclosures, then ease of manufacture and productivity are maintained, but recyclability and biodegradability worsen
Solution Approach 1:
The patent employs biodegradable polymers and natural fiber composites that can be readily composted or biodegraded after use, enabling recovery of organic matter and reduction of plastic waste accumulation. The material design facilitates industrial composting or home composting processes, allowing the housing to break down into harmless organic components, thereby achieving high recyclability in terms of biological recovery while maintaining manufacturing efficiency through standard composite processing methods.
Data Source
AI summary
Embodiments of the present disclosure generally relate to housings for, e.g., memory devices and electronic devices, and to processes for forming such housings. In an embodiment, an article for housing at least a portion of an electronic device is provided. The article includes a first component comprising a thermoplastic and a biodegradable filler or polymer, and a second component disposed on at least a portion of the first component, the second component comprising a plurality of layers. The article has a scratch visibility load of about 200 gms or more, an electrostatic discharge static voltage of about 100 V or less, a thermal conductivity of about 0.28 W/mK or more, or combinations thereof.