Fluororesin Composition with MFR Matching for Agglomeration-Free Molding
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Solution Overview
Problem
Increasing the proportion of fluororesin in compositions with liquid crystal polymers leads to agglomeration, resulting in strands with poor appearance.
Innovation Solution
A composition comprising a fluororesin A and a resin B with a melt flow rate of 30 g/10 min or higher at a melting point + 8°C, with a ratio (MFR of fluororesin A)/(MFR of resin B) of 0.2 to 10, enhancing compatibility and suppressing agglomeration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the proportion of fluororesin is increased, then the performance of the molded article is improved, but fluororesin agglomeration occurs resulting in poor appearance
Solution Approach 1:
The invention changes the parameters of the resin components by specifying precise melt flow rate ranges: resin A (fluororesin) with MFR of 0.5 to 10 g/10 min and resin B with MFR of 30 to 1000 g/10 min. This parameter optimization ensures proper compatibility and dispersion of fluororesin in the composition, preventing agglomeration while maintaining performance benefits of high fluororesin content
Solution Approach 2:
The invention creates a composite material system comprising fluororesin (resin A) and another resin (resin B) with specific MFR ratios. This composite approach allows the fluororesin to maintain its performance advantages while the compatible resin matrix prevents agglomeration, achieving both high performance and good appearance even with 20-80 weight% fluororesin content
2Reliability
If the proportion of fluororesin is increased, then the functional performance is enhanced, but compatibility between fluororesin and liquid crystal polymer deteriorates
Solution Approach 1:
The invention optimizes the melt flow rate parameters of both resins to achieve proper compatibility. By controlling resin A MFR at 0.5-10 g/10 min and resin B MFR at 30-1000 g/10 min, the invention ensures appropriate viscosity matching and dispersion characteristics, maintaining compositional stability even at high fluororesin concentrations
Solution Approach 2:
The invention uses liquid crystal polymer (resin B) as a matrix that replicates and sustains the dispersed fluororesin (resin A) phases. The liquid crystal polymer structure provides a compatible matrix that maintains the integrity and dispersion of fluororesin domains, preventing agglomeration while preserving functional performance
Data Source
AI summary
The disclosure aims to provide a composition capable of suppressing fluororesin agglomeration, which may lead to strands with a poor appearance, even when the proportion of the fluororesin is increased, and also aims to provide a molded article, a laminate, and a method for producing a composition. The disclosure relates to a composition containing a fluororesin A; and a resin B other than the fluororesin A, the resin B having a melt flow rate of 30 g/10 min or higher at a melting point + 8°C, the fluororesin A being a resin satisfying a ratio (a MFR of the fluororesin A)/(a MFR of the resin B) = 0.2 to 10.