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. However, the primary product is Garamite (32 ìm d50 grain size) for most applications (Table 1). How MMTs Work MMTs thicken systems similarly to the.
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We have shown that Garamite fills this need in many cases as compared to conventional organoclays, polyamides and fumed silicas. In recent studies we have seen the Garamite work across a very wide range of solvent systems. The morphology also plays a role in ease of incorporation. When working with epoxies do not be afraid to try various combinations between Part A and Part B.
Notice the phase separation of the modification made with organoclay.
GARAMITE® – Byk (Altana Group) – datasheet
When comparing Garamite to polyamides or castor derivatives, the MMT is much less sensitive to processing conditions. MMTs garamife compared to various thixotrope technologies used in different types of industrial coatings, including highsolids epoxies, low-HAPs systems, high-solids alkyds, chainstopped alkyds and zinc primers. 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.
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It is also more efficient and easier to handle in manufacturing less dusty, higher bulk density and not sensitive to shear. While not completely necessary, this will consistently yield the most efficient results.
Also, it may be possible to use these products during manufacture without the garamihe conditions, yet still pass QC.
Zinc The next study intended to find the level of Garamite needed to suspend zinc through the use of high-solids pregels. Also, it bears mentioning that some color is imparted into clear, unfilled systems by the MMT. Another advantage of the MMTs is that in most systems polar activators are not necessary. They also require the proper agitation during cooling in order to prevent the system from forming a false body.
However, this property is not noticed in filled systems. This is also the first time in this article we use a garamlte enhancer, the BYK R Polyurethane Systems Other potential applications include polyurethanes, garamige adhesives and grouts, unsaturated polyesters, metallic coatings and aerosol coatings. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units.
The lowest levels, considered to be traditional organoclays, have to be activated with some type of polar activator. 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.
Be sure to test for compatibility and stability. Figure 11 evaluates the effectiveness of Garamite garamiye to organoclay in a PU system. You may choose a language below garamiet continue to this industry or close this dialog above. This can make the other thixotropes much more difficult to deal with in the long run. One advantage for fumed silica is clarity in the final film. This pregel was both pourable and pumpable Figure But for reactivity and storage stability it should be tested to see if the water in Garamite causes issues in these watersensitive formulations.
Cowles-type shear will suffice in all applications for dispersing the MMTs.
Organoclays are typically made from smectite and come in a form somewhat like a deck of cards, with clay particles Stacked one upon another. This flexibility could reduce the number of thixotropes needed. Including the other mineral type helps to prevent this from occurring. Originally we used the Garamite only in Part A.
This higher level of quaternary amine typically makes them easier to incorporate, but slightly less efficient than traditional organoclays, all other things being equal. The trend for higher-solids coatings is to have excessive package viscosity without sufficient sag resistance. Data sheets for overmetals, plastics, ceramics, and composites.
This article explains how and why Garamite works. MatWeb is intended for personal, non-commercial use. The comparison thixotropes need to achieve the correct temperature and dwell time to be activated and work properly, while Garamite does not.
This morphology plays a role in not only the ease of incorporation, but also in the efficacy of sag resistance and settling resistance over heat aging.
If needed to gain a little more efficiency, one can use polar activators in a manner similar to traditional organoclays. To see MatWeb’s complete data sheet for this material including material property data, metal compositions, material suppliers, etcplease click the button below. Also discussed are methods of incorporation and other processing considerations.
We appreciate your input. In this case the polyamide had the highest viscosity but did not do well for the prevention of settling during heat aging Figure 9.