A method for producing an edible oil degradation-preventing member
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for preventing edible oil degradation, such as those using titanium nitride and anodization, require hazardous strong acids and expensive high-voltage equipment, making them costly and unsafe.
Innovation Solution
A surface-treating method involving forming titanium nitride on metallic titanium or titanium alloys through heat treatment in ammonia or nitrogen atmospheres, followed by anodization in an electrolyte solution without etching effects, and subsequent heating in an oxidizing atmosphere to form a crystalline titanium oxide film, which prevents edible oil degradation without the need for hazardous materials or expensive equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If strong acids (e.g., sulfuric acid) are used for etching metallic titanium, then the titanium surface can be effectively etched, but hazardous materials are required making the process unsafe and costly
Solution Approach 1:
The patent replaces expensive and hazardous strong acids with inexpensive, safe electrolyte solutions containing common salts (NaCl, KCl, Na2SO4, K2SO4) that can be easily disposed of after use, eliminating the need for costly acid handling and disposal systems
Solution Approach 2:
The patent replaces chemical etching with electrochemical anodization, using electrical current to directly form titanium oxide films on the titanium surface, thereby eliminating the need for chemical etchants entirely
2Manufacturing precision
If anodization is performed under voltage equal to or higher than sparkover voltage, then titanium oxide film can be formed, but expensive high-voltage power sources and cooling equipment are required
Solution Approach 1:
The patent changes the voltage parameter from high voltage (sparkover voltage or higher) to low voltage (1-30V DC), and adjusts the current density parameter (0.1-10 A/dm²) to achieve effective anodization without requiring expensive high-voltage equipment or cooling systems
Solution Approach 2:
The patent uses simple, inexpensive power sources that can be easily obtained, eliminating the need for costly high-voltage power supplies and associated cooling infrastructure
3Manufacturing precision
If conventional anodization with etching acids is used, then titanium oxide film can be formed, but the process requires hazardous materials and expensive equipment
Solution Approach 1:
The patent uses inexpensive, non-hazardous electrolyte solutions containing common salts that can be easily prepared and disposed of, dramatically simplifying the manufacturing process and reducing costs while maintaining film quality
Solution Approach 2:
The patent replaces complex chemical etching processes with simple electrochemical anodization using safe electrolytes, making the manufacturing process easier and more accessible
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
This method effectively prevents edible oil degradation by forming a titanium oxide film that suppresses thermal degradation, maintaining the oil's flavor and nutritional value while being safe and economical.
Implementation Method 1
forming titanium nitride on the surface of a metallic titanium material or titanium alloy material by one treatment method selected from the group consisting of a heat treatment under an ammonia gas atmosphere and a heat treatment under a nitrogen gas atmosphere, at a heating temperature of 750°C or higher
Implementation Method 2
anodizing the metallic titanium material or titanium alloy material with the titanium nitride formed on the surface thereof obtained in step (1) by applying a voltage of 10 V or more in an electrolyte solution having no etching effect on titanium, thereby forming a titanium oxide film
Implementation Method 3
heating the metallic titanium material or titanium alloy material with the titanium oxide film formed on the surface thereof obtained in step (2) at a temperature of 400°C or higher in an atmosphere selected from an air atmosphere, a mixed atmosphere of oxygen gas and nitrogen gas, and an oxygen gas atmosphere
Data Source
Figure 1
AI summary
An object of the present invention is to produce a member useful for preventing edible oil from degrading by performing simple, economical, and safe steps. A method for producing an edible oil degradation-preventing member, comprising the steps of: (1) forming titanium nitride on the surface of a metallic titanium material or titanium alloy material by one treatment method selected from the group consisting of a heat treatment under an ammonia gas atmosphere and a heat treatment under a nitrogen gas atmosphere, at a heating temperature of 750°C or higher; (2) anodizing the metallic Titanium material or titanium alloy material with the titanium nitride formed on the surface thereof obtained in step (1) by applying a voltage of 10 V or more in an electrolyte solution having no etching effect on titanium, thereby forming a titanium oxide film; and (3) heating the metallic titanium material or titanium alloy material with the titanium oxide film formed on the surface thereof obtained in step (2) at a temperature of 400°C or higher in an atmosphere selected from an air atmosphere, a mixed atmosphere of oxygen gas and nitrogen gas, and an oxygen gas atmosphere.