Resin Raw Material Composition for Microporous Membranes
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Solution Overview
Problem
The existing methods for blending resin pellets and powder in extrusion molding face challenges such as uneven composition distribution, classification, and dustiness, leading to variations in product thickness and strength, particularly in the production of microporous membranes for lithium-ion secondary batteries.
Innovation Solution
A resin raw material composition comprising resin pellets, a powder, and a liquid component, where the pellets are partially coated with the liquid component, and the powder is adhered to it, with specific weight and particle size ratios to enhance dispersibility and prevent classification and dustiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resin pellets and powder are blended and simultaneously extrusion-molded, then functionalization of the molded product is improved, but composition distribution becomes uneven and classification occurs
Solution Approach 1:
The patent applies preliminary action by pre-coating the surfaces of resin pellets with a liquid component before adding the powder. This pre-preparation of the pellet surface creates optimal conditions for powder adhesion, ensuring uniform composition distribution from the start of the mixing process rather than relying on subsequent mixing alone.
Solution Approach 2:
The liquid component serves as an intermediary substance between the resin pellets and the powder. It is applied to the pellet surfaces to facilitate powder adhesion, acting as a bonding medium that ensures uniform distribution of the powder throughout the final molded product, thereby preventing classification.
2Stability of the object's composition
If resin pellets and powder are blended in advance, then mixing is improved, but dustiness increases and handling becomes difficult
Solution Approach 1:
The liquid component is applied to the resin pellet surfaces as a preliminary step before powder addition. This pre-coating creates a binding layer that captures the powder particles, preventing them from becoming airborne dust during subsequent handling and processing operations.
Solution Approach 2:
The liquid component acts as an intermediary that binds the powder to the resin pellets, forming a cohesive structure. This reduces dust generation during handling by ensuring the powder remains attached to the larger pellet structure rather than existing as loose, airborne particles.
3Strength
If powder is added to liquid-coated pellets, then adhesion is improved, but aggregate formation increases
Solution Approach 1:
The patent applies partial action by coating only the surfaces of the resin pellets with the liquid component rather than saturating the entire pellet. This controlled application ensures sufficient powder adhesion on the surface while preventing excessive liquid accumulation that would cause large aggregate formation.
Solution Approach 2:
The liquid component is applied locally to the surfaces of the resin pellets rather than uniformly throughout the entire material. This localized application creates optimal adhesion zones on the pellet surfaces for powder attachment while maintaining the structural integrity and shape characteristics of the individual pellets.
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 results in improved moldability, reduced dustiness, and enhanced physical properties of the molded products, including microporous membranes, with better handling and processing characteristics.
Implementation Method 1
granules in which the surfaces of the resin pellets are at least partially coated with the liquid component, the resin pellets coated with the liquid component are individual particles or an aggregate of plural particles, and the powder is adhered to the liquid component
Data Source
AI summary
According to the present disclosure, a resin raw material composition comprising resin pellets, a powder and a liquid component is provided. The resin raw material composition is a resin raw material composition for molding use or a resin raw material composition for microporous membranes. The resin raw material composition comprises granular bodies in each of which the liquid component is coated on at least a portion of the surface of each of the resin pellets and the powder is adhered to the liquid component.