Amine-Functionalized Interpolymer for Peroxide Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Crosslinkable polymeric compositions used in medium to extra-high voltage cables face issues with peroxide initiators undergoing non-productive decomposition, particularly in the presence of acid, leading to reduced cure potential during storage.
Innovation Solution
Incorporating an ethylene-based polymer and an organic peroxide with an amine-functionalized interpolymer, which inhibits acid-catalyzed decomposition of the peroxide, thereby preserving the cure potential of the crosslinkable polymeric composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peroxide initiator is used in crosslinkable polymeric composition, then crosslinking reaction can be initiated, but peroxide undergoes non-productive decomposition during storage particularly in presence of acid, reducing cure potential
Solution Approach 1:
The patent introduces an acid scavenger as an intermediary substance that neutralizes acidic byproducts generated during storage. This mediator prevents the acid from catalyzing the decomposition of the peroxide initiator, thereby maintaining cure potential over extended storage periods while allowing the peroxide to remain active when needed for crosslinking
Solution Approach 2:
The patent applies preliminary anti-action by incorporating acid scavengers and stabilizers into the composition before storage begins. These additives preemptively counteract the acid-catalyzed decomposition mechanism, creating a protective chemical environment that preserves peroxide integrity during storage while allowing normal crosslinking function when the composition is applied
2Reliability
If amine-functionalized interpolymer is added to inhibit acid-catalyzed decomposition, then cure potential retention is improved, but composition complexity increases
Solution Approach 1:
The amine-functionalized interpolymer serves multiple functions simultaneously: it acts as an acid scavenger to neutralize acidic byproducts, functions as a crosslinking agent to build the polymeric network, and provides structural integrity to the composition. This multi-functionality reduces the need for separate additives and minimizes overall composition complexity while achieving reliable cure potential retention
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 amine-functionalized interpolymer enhances the retention of cure potential, ensuring the crosslinkable polymeric composition maintains its effectiveness over longer storage periods and thermal aging, as demonstrated by improved torque measurements in moving die rheometer tests.
Implementation Method 1
The peroxides used as initiators for radical crosslinking in such materials can undergo non-productive decomposition during storage, particularly in the presence of an acid
Implementation Method 2
The peroxides used as initiators for radical crosslinking in such materials
Data Source
AI summary
Crosslinkable polymeric compositions comprising an ethylene-based polymer, an organic peroxide, and an amine-functionalized interpolymer. Such crosslinkable polymeric compositions and their crosslinked forms can be employed as polymeric layers in wire and cable applications, such as insulation in power cables.