Vinyl Chloride Cable Epoxidized Ester Plasticizer Compatibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vinyl chloride polymer compositions with alternative plasticizers, such as epoxidized soybean oil, have shown inferior compatibility and heat-aging properties compared to traditional plasticizers like phthalate or trimellitate, limiting their use as primary plasticizers in cable constructions.
Innovation Solution
A cable construction comprising a first composition of 20-80 weight percent vinyl chloride resin and 1-40 weight percent of an epoxidized ester of fatty acids and a monomeric polyol, where the epoxidized ester has an Iodine value of 2 or less, combined with a second composition of crosslinked polyolefin, enhancing compatibility and heat-aging properties without the need for a compatibilizer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If alternative plasticizers such as epoxidized soybean oil are used in vinyl chloride polymer compositions, then environmental compatibility is improved, but compatibility with the polymer and heat-aging properties deteriorate
Solution Approach 1:
The patent modifies the chemical parameters of the epoxidized ester plasticizer by controlling the Iodine value (≤2) and specifying the molecular structure (formula I) to optimize compatibility with vinyl chloride resin while maintaining environmental benefits. This parameter optimization resolves the contradiction between environmental compatibility and heat-aging properties.
Solution Approach 2:
The invention creates a composite plasticizer system using epoxidized esters of fatty acids and monomeric polyols with specific molecular structures. This composite approach enhances compatibility with vinyl chloride polymer while maintaining the environmental advantages of renewable-derived plasticizers, thereby improving heat-aging properties without sacrificing environmental compatibility.
2Adaptability or versatility
If alternative plasticizers are used as primary plasticizers in vinyl chloride polymer compositions, then dependence on traditional plasticizers is reduced, but compatibility and performance deteriorate
Solution Approach 1:
The patent specifies precise parameter ranges for the epoxidized ester plasticizer including Iodine value ≤2, molecular structure (formula I), and weight percent composition (1-40%). These parameter changes enable the alternative plasticizer to function effectively as a primary plasticizer with improved compatibility, resolving the contradiction between plasticizer alternative usage and compatibility.
3Ease of operation
If vinyl chloride polymer compositions use traditional plasticizers, then flexibility is improved, but environmental compatibility deteriorates
Solution Approach 1:
The patent optimizes the plasticizer composition parameters to achieve flexibility comparable to traditional plasticizers. By specifying epoxidized esters with controlled Iodine values and molecular structures, the invention maintains the flexibility required for cable constructions while using environmentally compatible renewable-derived materials.
Solution Approach 2:
The invention replaces traditional petrochemical-based plasticizers with renewable-derived epoxidized esters, transitioning to more sustainable materials that maintain functional performance. This substitution achieves environmental compatibility without sacrificing the flexibility needed for cable applications.
Data Source
Figure 1
Figure 2
AI summary
The present invention relates to a cable construction comprising one or more layer elements, which layer elements comprise a first composition, wherein the first composition comprises: 20 to 80 weight percent of a vinyl chloride resin and 1 to 40 weight percent of an epoxidized ester of fatty acids and a monomeric polyol, which epoxidized ester is a compound of formula (I) wherein the compound of formula (I) has an amount of double bonds corresponding to an Iodine value of 2 or less, a power cable, process for producing a cable construction, and a crosslinked cable construction obtainable by the process.