Phosphate Ester Salt Additive for Wear and Copper Corrosion Control
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Solution Overview
Problem
Existing phosphorus-nitrogen-type antiwear additives face challenges in achieving high load-carrying capacity and copper corrosion resistance under medium-to-high load conditions, particularly in new energy vehicles and high-end hydraulic equipment.
Innovation Solution
A novel phosphate ester salt with a bicyclic organic base structure and phosphate ester anion is developed, which demonstrates excellent wear resistance and low copper corrosion, enhancing load-carrying capacity without metallic elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phosphorus-nitrogen-type antiwear additives are used to achieve good wear resistance and load-carrying capacity, then wear resistance is improved, but copper corrosion increases
Solution Approach 1:
The patent changes the chemical structure parameters of the antiwear additive by using phosphate ester salts with specific cationic groups (cyclic amine, aromatic amine, or hybrid structures) instead of traditional phosphorus-nitrogen compounds. This structural parameter change maintains wear resistance while reducing copper corrosion through modified molecular interactions with copper surfaces.
Solution Approach 2:
The invention creates a composite additive system by combining phosphate ester anions with various cationic groups (cyclic amine, aromatic amine, or their combinations). This composite structure allows the additive to simultaneously achieve wear resistance and reduced copper corrosion by integrating the protective properties of both structural components.
2Strength
If phosphorus-nitrogen-type additives are used to improve load-carrying capacity under medium-to-high load conditions, then load-carrying capacity is improved, but copper corrosion under high-temperature conditions increases
Solution Approach 1:
The patent modifies the thermal stability parameters of the additive by selecting phosphate ester salts with specific cationic structures that maintain stability under high-temperature conditions. The cyclic amine and aromatic amine structures provide enhanced thermal resistance compared to traditional phosphorus-nitrogen additives, preventing decomposition and reducing copper corrosion at elevated temperatures while maintaining load-carrying capacity.
3Reliability
If traditional phosphate ester amine salts are used to achieve wear resistance, then wear resistance is improved, but copper corrosion remains non-negligible
Solution Approach 1:
The invention develops a composite additive structure by combining phosphate ester anions with multiple types of cationic groups (cyclic amine, aromatic amine, or their combinations). This composite approach creates a synergistic effect where the cyclic amine provides wear resistance through friction film formation, while the aromatic amine component reduces copper corrosion through adsorption on copper surfaces, achieving both protective functions simultaneously.
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 phosphate ester salt provides significant wear resistance and improved load-carrying capacity while minimizing copper corrosion, outperforming traditional phosphate ester amine salts.
Implementation Method 1
phosphate amine salts quickly form a friction film after friction occurs
Implementation Method 2
The friction film can significantly reduce wear and friction coefficient and effectively protect the friction parts
Data Source
Figure 1~2
AI summary
The present invention relates to a phosphate ester salt, wherein the phosphate ester salt has a bicyclic organic base structure as a cation and a phosphate ester structure as an anion. The phosphate ester salt of the present invention can effectively improve the wear-resistance performance and load-carrying capacity of the lubricating oil at a relatively small dosage, and the lubricating oil shows excellent copper corrosion resistance. The present invention also provides a process for preparing the phosphate ester salt, a lubricating oil and lubricating grease containing the phosphate ester salt, and use of the phosphate ester salt.