Solid Anaerobic Threadlocker Composition for Gap Curing
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Solution Overview
Problem
Conventional liquid anaerobic threadlockers face challenges such as incomplete curing through large gaps, difficulty in curing exposed adhesive portions due to oxygen exposure, and poor solvent resistance, leading to potential contamination and hazardous conditions.
Innovation Solution
An anaerobically curable composition comprising a liquid anaerobically curable component, a solid anaerobically curable component, a solid thermoplastic polyvinyl butyral resin, and a curing component, which can be formulated into various solid forms like tape or filament, providing improved thermal resistance and handling integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid anaerobic threadlockers are used, then they provide excellent threadlocking and sealing properties when cured, but they face challenges such as incomplete curing through large gaps and difficulty in curing exposed adhesive portions due to oxygen exposure
Solution Approach 1:
The patent changes the physical state parameter of the anaerobic threadlocker from liquid to semi-solid paste form. This parameter change allows the composition to maintain stability during application while enabling complete curing through gaps and exposed portions, resolving the contradiction between threadlocking reliability and curing completeness
Solution Approach 2:
The patent creates a composite material system combining anaerobic curable resin with thickening agents to form a semi-solid paste. This composite structure provides both the threadlocking effectiveness of anaerobic resins and the handling properties needed for complete curing, addressing the contradiction between performance and curing completeness
2Strength
If liquid anaerobic threadlockers are used, then they provide good adhesive performance, but they exhibit poor solvent resistance leading to potential contamination and hazardous conditions
Solution Approach 1:
The patent formulates a composite paste composition that integrates anaerobic curable resin with solvent-resistant additives and thickening agents. This composite structure maintains strong adhesive performance while providing excellent solvent resistance, eliminating the harmful effects associated with conventional liquid formulations
3Ease of operation
If solid forms like tape or filament are used, then handling integrity and thermal resistance are improved, but the composition must maintain applicability to threaded members
Solution Approach 1:
The patent creates a dynamically adaptable material that transitions from a solid semi-solid paste form during handling and application to a flowable state during curing. This dynamic behavior allows the composition to maintain handling integrity in solid form while ensuring easy application and complete curing, resolving the contradiction between ease of operation and ease of manufacture
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 composition achieves effective threadlocking and adhesive performance, with enhanced thermal resistance and solvent resistance, ensuring robust bond strength even at elevated temperatures and maintaining integrity during handling and application.
Implementation Method 1
Anaerobic adhesive systems are those which are stable in the presence of oxygen, but which polymerize in the absence of oxygen. Polymerization is initiated by the presence of free radicals, often generated from peroxy compounds.
Implementation Method 2
The compositions are thermally resistant at temperatures of at least 150° C.
Data Source
AI summary
An anaerobically curable composition comprising:a liquid anaerobically curable component;a solid anaerobically curable component;a solid polyether polyvinyl butyral resin;anda curing component for curing the anaerobically curable components. Advantageously, the compositions of the invention are substantially solid and may be used as threadlockers.