Polyester Master Batch with Graphene Oxide Dispersion
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Solution Overview
Problem
Synthetic fibers lack antibacterial and absorptive properties, leading to issues with odor, discoloration, and contamination, while graphene dispersion in polymer resins is challenging due to van der Waals forces, limiting the production of high-performance composites.
Innovation Solution
A polyester master batch composition containing 99% to 99.9% polyester and 0.1% to 1% graphene oxide dispersion liquid, with ionized water and a dispersant, is used to create a polyester yarn with far-infrared radiation, antibacterial, UV blocking, electrical conductivity, and improved mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If graphene oxide dispersion liquid is added to polyester to impart functional properties, then antibacterial function, far-infrared radiation, UV blocking, electrical conductivity, and heat dissipation are improved, but dispersion uniformity deteriorates due to van der Waals forces between graphenes
Solution Approach 1:
The patent uses a dispersant as an intermediary substance between graphene oxide particles and polyester resin. The dispersant contains carboxylic acid groups that chemically interact with graphene oxide surfaces, reducing van der Waals attraction and enabling uniform distribution throughout the polyester matrix without aggregation.
Solution Approach 2:
The patent modifies the chemical parameters of the dispersion system by introducing a dispersant with specific functional groups (carboxylic acid). This changes the interfacial properties between graphene oxide and polyester, transforming the system from one where van der Waals forces dominate to one where chemical interactions enable stable dispersion.
2Reliability
If high concentration of functional additives is used to achieve desired performance, then functional properties are improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent prepares a pre-dispersed graphene oxide master batch before compounding with polyester. The dispersant is pre-applied to graphene oxide particles to create a stable suspension, which is then easily incorporated into polyester resin. This preliminary dispersion action simplifies the overall manufacturing process and reduces complexity.
Solution Approach 2:
The patent creates a composite master batch containing polyester, graphene oxide, and dispersant in specific proportions. This composite material combines multiple functionalities (structural polyester matrix with functional graphene oxide dispersed via dispersant) into a single processable unit, simplifying downstream manufacturing while maintaining high functional performance.
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 polyester yarn exhibits enhanced lubricity, UV blocking, electrical conductivity, heat dissipation, and mechanical properties such as scratch resistance, abrasion resistance, tensile strength, and flexural modulus, while maintaining minimal production costs.
Implementation Method 1
graphene oxide dispersion liquid
Implementation Method 2
defect-free graphenes are difficult to uniformly disperse in polymer resins and organic solvents due to van der Waals forces between graphenes
Implementation Method 3
the polyester yarn is imparted with far-infrared ray radiation
Implementation Method 4
exhibiting lubricity, UV blocking properties, electrical conductivity, and heat dissipation properties
Implementation Method 5
a dispersant, in which the additives function to impart various necessary functions
Implementation Method 6
graphene oxide dispersion liquid contains 100 parts by weight of ionized water
Data Source
AI summary
The present invention relates to a polyester master batch composition and a polyester yarn containing the composition, and more specifically, to a polyester master batch composition obtained by adding a graphene oxide dispersion liquid to polyester. The polyester master batch composition to which the graphene oxide is added as described above provides a polyester yarn further having far-infrared emissivity and antibacterial performance, as well as exhibiting lubricity, UV blocking properties, electrical conductivity, and heat dissipation properties, and having improved mechanical properties such as scratch resistance, abrasion resistance, tensile strength, flexural strength, and flexural modulus.