Terephthalate Plasticizer Composition for Heat-Resistant Resin Compatibility
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Solution Overview
Problem
Current heat-resistant plasticizers face challenges with low compatibility and heat resistance, particularly for applications requiring high thermal stability, such as in cables and automobile components.
Innovation Solution
A plasticizer composition is developed using a terephthalate compound with a 10-carbon alkyl group, combined with dipropyl heptyl phthalate, to enhance compatibility and heat resistance, which is prepared through a method involving the esterification of terephthalic acid with a solvent mixture of alcohols under controlled conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heat-resistant plasticizers (such as TOTM, TINTM, DOP, DIDP, DIP) are used to achieve high heat resistance, then heat resistance is improved, but compatibility with the resin deteriorates
Solution Approach 1:
The patent changes the chemical structure parameters of the plasticizer by using terephthalic acid instead of phthalic acid or adipic acid, and by selecting specific alcohol chain lengths (C8-C10). This structural modification maintains heat resistance while improving compatibility with polyolefin resins, resolving the contradiction between heat resistance and compatibility
Solution Approach 2:
The patent creates a composite plasticizer system by blending terephthalate esters with specific alcohol chains in optimized ratios. This composite approach combines the heat resistance of aromatic structures with the compatibility benefits of specific alkyl chain configurations, achieving both high heat resistance and good compatibility simultaneously
2Temperature
If terephthalate plasticizers with C8 alkyl groups are used to improve heat resistance compared to conventional plasticizers, then heat resistance is improved, but compatibility deteriorates due to structural limitations
Solution Approach 1:
The patent optimizes the alkyl chain length parameter from C8 to a mixture of C8-C10, which changes the molecular packing and interaction characteristics. This parameter adjustment maintains the heat resistance advantage of terephthalate structures while improving compatibility by reducing crystallinity and enhancing amorphous phase dispersion in the resin
3Temperature
If polyethylene is used for high heat resistance applications (105-150°C), then heat resistance is improved, but additional additives (flame retardant, cross-linking agent) are required, increasing complexity
Solution Approach 1:
The patent develops a plasticizer composition that serves multiple functions: it acts as a plasticizer for flexibility, a heat stabilizer for thermal resistance, and provides flame retardancy through its chemical structure. This multi-functional plasticizer reduces the need for separate additive packages, simplifying the overall formulation while maintaining high heat resistance
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 significantly improves elongation retention, heat resistance, and tensile strength, leading to enhanced physical properties in heat-resistant resin compositions, suitable for applications in cables, automobile parts, and other heat-resistant products.
Implementation Method 1
a plasticizer composition which comprises: 5 to 60% by weight of a terephthalate compound represented by the following Formula (1)
Data Source
AI summary
Disclosed are a plasticizer that, when used for a heat-resistant resin composition, improves elongation retention, enhances aging resistance and heat resistance, and exhibits superior tensile strength, tensile strength retention, heating loss or the like before and after heating, thus contributing to enhancement in physical properties of the heat-resistant resin, a plasticizer composition, a heat-resistant resin composition and a method for preparing the same.