Modified Vegetable Oil Anti-Dust Additive for Cement
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Solution Overview
Problem
Cement-based dry compositions for mortars and plasters experience significant dust emissions during manufacturing, handling, and use, leading to health hazards, environmental contamination, and performance issues due to the loss of costly fine adjuvants, which existing anti-dust additives often fail to adequately address effectively.
Innovation Solution
A dry composition comprising a binder and an oil with a specific compound of formula (I), where Z is an alkyl or alkenyl radical, and R, R', and R'' represent various substituents, is used to reduce dust emissions by improving the composition's flowability and stability, incorporating modified vegetable oils with tailored surface tension and viscosity to prevent particle agglomeration and enhance anti-dust effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If conventional anti-dust additives (e.g., polytetrafluoroethylene) are used to reduce dust emissions, then dust emissions are reduced, but air penetrates into the composition altering physicochemical properties requiring additional defoaming agents
Solution Approach 1:
The patent extracts and eliminates the harmful side effect of air penetration by removing conventional anti-dust additives (polytetrafluoroethylene) that cause air entrapment. Instead, it uses a specialized oil composition that reduces dust emissions without the adverse air penetration effect, thereby eliminating the need for additional defoaming agents and simplifying the overall composition.
Solution Approach 2:
The patent changes the physical-chemical parameters of the anti-dust agent by using a specific oil composition with controlled viscosity (10-1000 cSt) and surface tension properties. This parameter optimization allows the oil to effectively reduce dust emissions while maintaining compatibility with the cement-based composition and preventing air entrapment, thus avoiding the need for additional defoaming agents.
2Object-generated harmful factors
If conventional anti-dust additives are used to reduce dust emissions, then dust emissions are reduced, but costly quantities of additives are required
Solution Approach 1:
The patent optimizes the physical parameters of the oil additive, specifically selecting oils with viscosity between 10-1000 cSt and appropriate surface tension characteristics. This parameter optimization enables effective dust emission reduction at lower additive concentrations (0.1-5% by weight), improving cost-efficiency compared to conventional additives that require higher quantities.
3Object-generated harmful factors
If conventional anti-dust additives are used to reduce dust emissions, then dust emissions are reduced, but workability, strength, adhesive and impermeability properties are impaired
Solution Approach 1:
The patent applies local quality by selecting oils with specific localized properties (viscosity 10-1000 cSt, controlled surface tension) that are optimized for their specific function of dust suppression. The oil's physical parameters are tuned to provide anti-dust effectiveness while maintaining compatibility with cement hydration processes, thereby preserving workability, strength, adhesion, and impermeability properties that would otherwise be impaired by conventional additives.
Solution Approach 2:
The patent changes the physical parameters of the additive system by using oils with optimized viscosity (10-1000 cSt) and surface tension properties. These parameter adjustments ensure that the anti-dust agent does not interfere with the physicochemical processes of cement-based materials, thereby maintaining reliable performance in terms of workability, compressive strength, adhesion, and impermeability.
4Ease of operation
If dry compositions are used for cement-based materials, then ease of handling and storage is improved, but significant dust emissions occur during manufacture, packaging and use
Solution Approach 1:
The patent applies preliminary action by incorporating the oil additive into the dry composition during the manufacturing stage. The oil pre-coats the fine particles and aggregates, creating a dust-suppressing layer before the material is subjected to handling, packaging, or use. This preliminary treatment ensures that dust emissions are reduced throughout the material's lifecycle while maintaining the convenience of dry composition handling and storage.
Solution Approach 2:
The patent introduces an intermediary substance (oil with viscosity 10-1000 cSt) that mediates between the dry composition particles. This intermediary oil layer reduces direct particle-to-particle contact and particle-to-air interaction, thereby suppressing dust emissions during handling and storage while preserving the ease of operation benefits of dry compositions. The oil acts as a lubricating and binding intermediary that prevents dust generation without compromising handling convenience.
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 significantly reduces dust emissions while maintaining or improving the performance properties of cement-based materials, such as workability, compressive strength, and durability, without the drawbacks of existing additives, such as air penetration and cost inefficiencies.
Implementation Method 1
incorporating modified vegetable oils with tailored surface tension and viscosity to prevent particle agglomeration and enhance anti-dust effects
Implementation Method 2
incorporating modified vegetable oils with tailored surface tension and viscosity to prevent particle agglomeration and enhance anti-dust effects
Data Source
AI summary
A dry composition including at least one binder and an oil comprising at least one compound of formula (I) below:wherein,Z represents an optionally substituted, linear or branched C4 to C28 alkyl radical or an optionally substituted, linear or branched C4 to C28 alkenyl radical, andR, R′ and R″ are identical or different and separately represent an optionally substituted, linear or branched hydrogen atom, hydroxyl radical, C1 to C12 alkyl radical, an optionally substituted, linear or branched C1 to C12 heteroalkyl radical, an optionally substituted, linear or branched C5 to C10 cycloalkyl radical, or an optionally substituted, linear or branched C6 to C18 aryl radical.