β-Diketonato Metal Additive for Stable Polymer Crosslinking
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Solution Overview
Problem
β-diketonato metal complexes used for film formation or as metal ion sources face issues with thermal decomposition or phase transition at low temperatures, compromising storage stability and structural integrity.
Innovation Solution
A metal-containing additive comprising a β-diketonato metal complex and a primary alkyl alcohol with 4 to 30 carbon atoms is used, enhancing storage stability by stabilizing the complex structure and allowing controlled release of metal ions at higher temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a β-diketonato metal complex is used as a raw material for film formation by CVD process, then low melting point and vaporization temperature are preferable for efficient film formation, but storage stability deteriorates due to thermal decomposition or phase transition at low temperatures
Solution Approach 1:
A chelating agent is introduced as an intermediary substance that forms a stable complex with the metal complex. This chelating agent-mediated complex maintains storage stability by preventing thermal decomposition and phase transitions, while still allowing controlled release of metal ions at higher temperatures for CVD film formation. The chelating agent acts as a mediator that stabilizes the complex during storage but does not prevent its decomposition at elevated temperatures.
Solution Approach 2:
The invention creates a composite material system consisting of the metal complex combined with a chelating agent. This composite structure provides both storage stability (through the chelating agent's stabilizing effect) and controlled reactivity (through the metal complex's inherent properties). The composite material allows the system to exhibit different properties under different conditions: stability during storage and controlled decomposition during processing.
2Productivity
If a β-diketonato metal complex is used as a metal ion source, then rapid release of metal ions is desirable for efficient crosslinking, but storage stability deteriorates due to premature decomposition
Solution Approach 1:
The chelating agent serves as an intermediary that controls the interaction between the metal complex and the polymer. During storage, the chelating agent prevents premature decomposition. During crosslinking, the chelating agent-mediated release of metal ions enables rapid crosslinking by facilitating controlled decomposition at the desired moment. This intermediary mechanism resolves the contradiction between storage stability and crosslinking speed.
Solution Approach 2:
The chelating agent is pre-combined with the metal complex to form a stable complex before the crosslinking process. This preliminary action of complex formation ensures storage stability. When heating is applied, the pre-formed complex decomposes in a controlled manner, enabling rapid metal ion release and efficient crosslinking. The preliminary complexation action thus enables both stable storage and rapid crosslinking.
3Reliability
If the β-diketonato metal complex structure is stabilized for storage, then storage stability improves, but controlled decomposition for metal ion release becomes difficult
Solution Approach 1:
The invention utilizes parameter changes, specifically temperature changes, to control the decomposition behavior of the metal complex. The chelating agent stabilizes the complex at storage temperatures, preventing premature decomposition. When the temperature is increased to the processing range, the complex decomposes in a controlled manner, releasing metal ions for crosslinking. This parameter-based control (temperature) resolves the contradiction between storage stability and controlled decomposition.
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 additive and crosslinkable polymer composition exhibit excellent storage stability and rapid crosslinking properties, producing crosslinked polymer materials and wire harnesses with enhanced anticorrosion properties.
Implementation Method 1
a metal-containing additive, which includes a β-diketonato metal complex and a primary alkyl alcohol having 4 to 30 carbon atoms
Implementation Method 2
metal ions are released from the β-diketonato metal complex by thermal decomposition or phase transition
Implementation Method 3
the organic polymer has a substituent capable of forming ionic bonds with metal ions released by heat from the metal-containing additive
Data Source
AI summary
To provide a metal-containing additive and a crosslinkable polymer composition that each contain a β-diketonato metal complex and have excellent storage stability, and provide a crosslinked polymer material, a metal member, and a wire harness that are each produced using such a crosslinkable polymer composition. The metal-containing additive includes the β-diketonato metal complex and a primary alkyl alcohol having 4 to 30 carbon atoms. The crosslinkable polymer composition includes the metal-containing additive and an organic polymer, where the organic polymer has a substituent capable of forming ionic bonds with metal ions released by heat from the metal-containing additive.