Lubricant Composition Viscosity Stabilization
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Solution Overview
Problem
The viscosity of lubricant compositions containing carboxymethyl cellulose drops when in contact with iron, calcium, aluminum, and/or oxygen, leading to reduced storage time and loss of thickening and tackifying effects.
Innovation Solution
Incorporating sodium polyphosphate into the lubricant composition of glycerol and water, which inhibits viscosity reduction and acts as a corrosion preventer, while also lowering the pour point, thereby maintaining effectiveness in lower temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If carboxymethyl cellulose is used as thickener and tackifier in lubricant, then the lubricant gains thickening and adhesion properties, but the viscosity drops when in contact with iron, calcium, aluminum and/or oxygen, reducing storage time
Solution Approach 1:
Sodium polyphosphate acts as an intermediary substance between carboxymethyl cellulose and the harmful factors (iron, calcium, aluminum, oxygen). It prevents direct interaction that would cause viscosity reduction, thereby extending storage time while maintaining the thickening and tackifying effects of carboxymethyl cellulose.
Solution Approach 2:
The invention changes the chemical environment by introducing sodium polyphosphate, which alters the interaction parameters between carboxymethyl cellulose and metal ions/oxygen. This parameter change prevents the degradation reaction that would otherwise occur, maintaining viscosity stability throughout storage.
2Ease of operation
If the lubricant is stored in a stainless steel container in contact with air, then storage is convenient, but the viscosity of carboxymethyl cellulose drops significantly, reducing storage time
Solution Approach 1:
Sodium polyphosphate provides preliminary protection against viscosity reduction by preemptively binding with metal ions and preventing oxidation of carboxnymethyl cellulose. This anti-action occurs before significant degradation can take place, allowing convenient storage in standard containers without viscosity loss.
3Stability of the object's composition
If sodium polyphosphate is added to inhibit viscosity reduction, then viscosity stability is improved, but the composition complexity increases
Solution Approach 1:
The invention optimizes the concentration parameter of sodium polyphosphate to achieve effective viscosity stabilization with minimal additive amounts. By carefully controlling this parameter, the solution achieves protection against viscosity reduction while maintaining relatively simple composition and avoiding excessive complexity.
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
Sodium polyphosphate stabilizes viscosity and acts as a corrosion inhibitor, allowing the lubricant to maintain its thickening and adhesion properties and extend storage time, even when exposed to iron, calcium, aluminum, and oxygen, while also enabling use at lower temperatures.
Implementation Method 1
sodium polyphosphate surprisingly inhibits the reduction of the viscosity of the composition when the lubricant composition is in contact with iron, calcium, aluminum and/or oxygen
Implementation Method 2
sodium polyphosphate surprisingly lowers the pour point of the lubricant composition, which allows using the lubricant composition in lower temperatures
Data Source
AI summary
The invention relates to a lubricant composition comprising glycerol, water, carboxymethyl cellulose and sodium polyphosphate, wherein the composition comprises carboxymethyl cellulose 0.1 to 0.7 % by weight of the composition.