RHEOBYK -R 605
Liquid rheology additives for vinyl esters, epoxy resins, unsaturated polyesters Enhances the rheological performance of fumed silica in plastic applications such as resins and gel coats. Make fumed silica easier to incorporate, prevent delamination, increase or stabilize thixotropic behavior.
Chemical composition
Polyhydroxycarboxylic acid amide solution
Typical physical and chemical data
The data given on this data page are only typical values, not the technical indicators of the product.
| Density (20°℃) | 0.93 g/m |
| Refractive index (20℃) | 1.496 |
| Gardner Chroma | <10 |
| Non-volatile content (20min.,150C ) | 52% |
| Flashpoint | 29℃ |
Storage and Shipping
This product may separate or become cloudy. Disperse evenly before use. Product performance is not affected.
Application
Normal temperature curing resin system
Product features and advantages: RHEOBYK-R 605 is used for fumed silica or organic layered Silicates (organoclays) as rheology modifiers for unsaturated polyester resins, and as thixotropic synergists in epoxy and polyurethane systems. The additive enhances the thixotropy by strengthening the three-dimensional network structure of silica or layered silicates through additional bridging. Sufficiently high sagging resistance and improved leveling and defoaming are thus obtained even with lower amounts of silica or layered silicates.
A small amount of RHEOBYK-R605 (5% based on silica) stabilizes the Silica to prevent resin delamination during storage.
In vinyl ester resin, RHEOBYK-R 605 can activate hydrophilic fumed silica .
This additive can be used forIn a variety of resins, including polyether polyols, to prevent filler settling during storage.
In polyether polyols, RHEOBYK-R 605 can be used to stabilize molecular sieves such as zeolites.
Suggestions Dosage
Adjuvant dosage (purchase form) based on:
| Vapor Phase Dioxidation in Vinyl Ester Resin Silicon | 20-50% |
| Fumed silica in other resins | 10-30% |
| organic phyllosilicate (organic Clay) | 5-20% |
| Inorganic filler | 0.5-2% |
The above recommended dosage is for reference, and the optimal dosage needs to be determined through a series of experiments.
Adding method and processing Guidance
Under continuous stirring conditions, the additive should be in silica, layered silicate or Add to resin before filler is added. This additive can also be post-added.
Adhesives & Sealants
Product Features and Benefits: RHEOBYK-R605 is a contact with polyurethane and acrylate resin Thiotropic agents, rendered thixotropic through the use of fumed silica or organophyllosilicates (organoclays). Enhances the hydrogen bonding of silica and phyllosilicates, leading to increased thixotropy. Sufficiently high sagging resistance and improved leveling and defoaming are thus obtained even at lower silica or layer silicate dosages.
Recommended dosage
10-30% additive dosage (purchase form) based on fumed silica or organic layer shaped silicate.
The above recommended dosage is for reference, and the optimal dosage needs to be determined through a series of experiments.
Adding method and processing Guidance
Under continuous stirring conditions, the additive should be added in silica/phyllosilicate before adding to the resin. This additive can also be post-added.
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