Questions and Answers
Which property of silicone antifoam makes it effective at controlling foam
What is a common feature of silicone water repellents that helps in maintaining their performance over time?
Resil Trade Name for Hexamethyldisiloxane?
Role of the Polyether silicone- Resicare AIC in the OEM and Automobile coating and polish.
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Viscosity range of the DMV 350 cst
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CAS No of DMOH 1000.
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Difference between Antifoam and Defoam.
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Unit of Amine Value Measured.
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The Resil’s trade Name of 3-Aminopropyl 2- Aminoethyl Methyldimethoxy silane
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Which silane is suitable for the polysulfide and Polyurethane sealant
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Application of the VTMS in the 1part RTV Sealant
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What are the silanes used for solvent based epoxy paints?
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Which water repellent can be used for water based paints?
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Why Application of MAAS in solar panel application
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Which of the following is a natural rubber?
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Applications of Uniwet 3048
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Does DMOH react with isocyanate and can it be used as binder in PU paints?
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Effects of the higher silicone dosage on the coating.
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Will polydimethylsiloxane cure, what will be the Curing temperature of the silicone.
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What is a common advantage of silicone emulsion compared to other mold release agents?
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Which is the equivalent of GENIOSIL GF93 in our silane range
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What are the effects of excess dosage of silane?
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Difference between wetting and dispersing?
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Wetting agent functions?
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Application of WR1?
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Study Notes
Silicone Antifoam Properties
- Silicone antifoam effectively reduces foam due to its low surface tension and ability to spread quickly on foamy surfaces.
- The chemical structure of silicone allows it to disrupt the foam formation by destabilizing the air-liquid interface.
Silicone Water Repellents
- A common feature of silicone water repellents is their hydrophobic nature, which remains stable over time, enhancing long-term performance.
Resil Trade Names
- Hexamethyldisiloxane is marketed under the trade name "Resil."
- 3-Aminopropyl 2-Aminoethyl Methyldimethoxy silane is also known as "Resil."
Polyether Silicone in Coatings
- Resicare AIC serves as a functional additive in OEM and automobile coatings, enhancing surface properties like gloss and durability.
Viscosity of DMV
- DMV has a viscosity range of 350 centistokes (cst).
Chemical Identification
- The CAS number for DMOH 1000 is not specified directly but should be referenced in safety data sheets.
- DMOH does not react with isocyanates, making it suitable for use as a binder in polyurethane (PU) paints.
Silanes for Sealants
- Polysulfide and polyurethane sealants effectively use silanes for adhesion, with specific formulations varying based on application needs.
- VTMS (Vinyltrimethoxysilane) is utilized in one-part RTV sealants to enhance adhesion and moisture resistance.
Silanes in Paints
- Solvent-based epoxy paints commonly incorporate silanes like aminopropyltriethoxysilane for improved bonding and water resistance.
- For water-based paints, silicone-modified silanes are recommended to maintain water repellency.
MAAS in Solar Panels
- The application of MAAS (Methacryloxypropyltrimethoxysilane) in solar panels improves adhesion and provides protective qualities against environmental degradation.
Rubber and Applications
- Natural rubber includes substances derived from the sap of rubber trees and is used in diverse applications like tires and seals.
- Uniwet 3048 serves as a wetting agent enhancing surface interaction in various formulations.
Effects of Silicone Dosage
- Higher silicone dosages in coatings can lead to improved hydrophobicity but may also cause issues such as sagging or reduced durability.
- Polydimethylsiloxane may cure under heat; typical curing temperatures range from 100°C to 200°C.
Advantages and Equivalents
- Silicone emulsions offer advantages such as increased versatility and ease of application compared to traditional mold release agents.
- GENIOSIL GF93 has an equivalent in the silane range that delivers comparable performance.
Silane Dosage Effects
- Excess silane dosage can negatively impact the adhesion and mechanical properties of coatings or sealants, possibly leading to brittleness or reduced effectiveness.
Wetting vs. Dispersing
- Wetting refers to the process of a liquid spreading on a solid surface, while dispersing involves the distribution of particles in a liquid medium.
- Wetting agents function to reduce surface tension, facilitating the spread and adhesion of liquids on solid substrates.
Application of WR1
- WR1 is commonly used for its water-repellent properties in various coatings, enhancing durability and protecting substrates from moisture.
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