Incorporation and Processing Instructions. The additive can be incorporated in different ways. Either disperse GARAMITE directly in the millbase or add it. GARAMITE® is a unique rheological additive developed for a wide range of solvent born systems. Compared to fumed silica and organoclays. Rheology additive based on mixed mineral technology for solvent-borne unsaturated polyester, epoxy and vinyl ester resins that provides excellent.
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This website provides links to other websites owned by third parties. In part, we believe this has to do with garanite difference in having a baramite of rods and plates and having more 19558, making it much more difficult for Mother Nature to put the clay back to its natural state.
Garamite Compared to Organoclay There are a variety of organoclays, but for the purpose of this article we will stick to the basics and compare and contrast activated versus self-activating organoclays. Company Byk has an established history of innovation such as being the first additive manufacturer to garamitr using Controlled Polymerization Technology CPTlaunching the first rheology-modified wax emulsion, and being one of the first companies to use nanotechnology for improving Coatings properties.
How MMTs Work MMTs thicken systems similarly to the way in which organoclays work, using hydrogen bonding to form a three-dimensional network Figure 1. You may choose a language below to continue to this industry or close this dialog above. As organoclay manufacturers we impart a lot of energy to break this naturally occurring layered mineral apart.
In this study we compared the MMT to a polyamide, both conventional and selfactivating organoclays, as well as a blank. If solvent is not available, then add the Garamite to a reactive diluent or to the lowest-viscosity resin, with the first choice being the diluent. As you move from solvent to diluent to resin the efficiency will drop somewhat. Also, it bears mentioning that some color is imparted into clear, unfilled systems by the MMT.
Garamite is significantly easier to incorporate when compared to polyamides and castor derivatives and does not have their temperature and dwell time limitations. Originally we used the Garamite only in Part A. While the MMTs have a low bulk density compared to traditional organoclays, it is much higher than fumed silica, which has an extremely low bulk density. Including the other mineral type helps to prevent this from occurring.
Always be mindful of the fact the actual rheology of the finished system may not match exactly. Cowles-type shear will suffice in all applications for dispersing the MMTs. This leads to issues with dusting and incorporation for the fumed silica as compared to Garamite Figure 5.
China Rheological Additive Counter to Garamite – China Organoclay, Rheological Additive
Garamite has a unique morphology of rods and plates as compared to conventional organoclays that use just a plate-like layered structure Figure 2. Placement can be important to both pot life and shelf life and should be tested. The morphology also plays a role in ease of incorporation. One advantage for fumed silica is clarity in the final film. Another advantage of the MMTs is that in most systems polar activators are not necessary. Also the type of quaternary amine modification determines which type of solvent system the organoclay will work best in.
Also, it may be possible to use these products during manufacture without the ideal conditions, yet still pass QC. We also found that the quaternary amine does not play as important a role in determining efficiency in a specific solvent system, like with traditional organoclays. Keep in mind that the viscosity may be lower, but the sag resistance should be greater. The lowest levels, considered to be traditional organoclays, have to be activated with some type of polar activator.
Garamite outperforms fumed silica and significantly outperforms conventional organoclay. Byk invests approximately 7. Does this mean it will work every time? Mixed Mineral Thixotropes MMTs are a combination of two different morphologies; one being a plate, the other being a rod.
In this case the polyamide had the highest viscosity but did not do well for the prevention of settling during heat aging Figure 9. To totally suspend the zinc it took 1. We will now recommend some starting use levels, keeping in mind that we are talking in generalities, and some systems have different demands than expected. These organoclays usually are more efficient for thickening, but can be more difficult to incorporate, and order of addition can be more critical.
Organoclays are typically made from smectite and come in a form somewhat like a deck of cards, with clay particles Stacked one upon another.
MMT Advantages In practical terms we have found that Garamite tends to build less package viscosity while providing more sag resistance than organoclays. While not completely necessary, this will consistently yield garajite most efficient results.
We garakite realized that by splitting the Garamite How to Use Garamite The use of Garamite is very similar to organoclays. They also require the proper agitation during cooling in order to prevent the system from forming a false body. Other incorporation methods can also be used. In solvent-containing systems that can tolerate such processing, always add the Garamite to the solvent. However, the Garamite will still in most cases maintain an advantage over other competitive materials.
Rheological Additive Counter to Garamite 1958
This allows for lower package viscosity, lower cost and increased ease of manufacture. In unfilled systems, another shortcoming would be that the MMTs do not perform quite as well for sag garaimte. Another key advantage to the coatings manufacturer is the ability to make high-solids premixes at pourable viscosities. But it does mean MMTs are more flexible as compared to organoclays and have the ability to work in more systems.