Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>PENTAMIX</strong> <strong>GNL</strong><br />
Thickening and retarding additive for gypsums<br />
Technical Data Sheet October 2006<br />
DESCRIPTION<br />
Pentamix <strong>GNL</strong> is an additive in powder form specific for the preparation of<br />
scagliolas made of high-quality gypsum. The product is heat-resistant; it is added at<br />
the end of burning or on getting out of the kiln.<br />
FEATURES<br />
Pentamix <strong>GNL</strong> concentrates in a single product all the characteristics to give to a<br />
scagliola for plaster.<br />
Some minutes after the wetting in the batch box, the viscosity of scagliola<br />
increases, so that it is possible to apply it immediately. That allows bringing idle time<br />
down and using the whole wet mixture, while reducing or avoiding waste.<br />
The product also contains a specific retarder that only acts in the absence of<br />
hydrated lime. The normal quantity in the formula is sufficient to keep the wet<br />
mixture active for about 75 minutes. Anyway this period can vary according to the<br />
type of scagliola and the environmental conditions; it is therefore advisable to carry<br />
out preliminary tests so as to adjust the times to the specific needs.<br />
It is possible to arrange the quantity of retarder added in the production phase of<br />
Pentamix <strong>GNL</strong> in order to obtain longer or shorter times.<br />
In case of particular requirements or to modify the setting times autonomously, it is<br />
possible to use the retarder Pentatard G5.<br />
Pentamix <strong>GNL</strong> allows excellent smooth running of scagliola, so making all the<br />
finishing operations easier, even in thin layers.<br />
USE<br />
Pentamix <strong>GNL</strong> is used as a sole additive in the production of scagliola for plasters<br />
and in the preparation of premixed gypsum-based, hydrated lime-free smooth<br />
finishes used as scagliola in layers up to 2-3 mm thick.<br />
The product is normally added to scagliola on going out of the kiln, before the<br />
ensilage, always keeping in mind that the additive must disperse homogeneously.<br />
TECHNICAL DATA Form: Powder<br />
Colour:<br />
Beige<br />
Granulometry: Min. 95% < 180 µm<br />
Humidity: Max. 4%<br />
Density: Max. 0.500 kg/dm 3<br />
Water solubility:<br />
Storage:<br />
Partially soluble<br />
In a sheltered and dry place
Pentamix <strong>GNL</strong> / 2 Technical Data Sheet October 2006<br />
DOSAGE<br />
The normal dosage of Pentamix <strong>GNL</strong> ranges between 0.05% and 0.1% of the<br />
weight of scagliola, depending on the expected effect.<br />
STORAGE AND<br />
VALIDITY<br />
Pentamix <strong>GNL</strong> has 12-month validity beginning with delivery, if it is stored in a dry<br />
place and in the original bags kept perfectly closed. Should moisture be absorbed<br />
by the product, this does not affect its efficaciousness, but it makes its dosage<br />
difficult and the dispersion in the finished mixture not homogeneous.<br />
It is therefore advisable to close bags carefully after each collection.<br />
PRECAUTIONS<br />
Pentamix <strong>GNL</strong> is harmless both by contact and by ingestion.<br />
It is easily removable from any surface with water and soap.<br />
Inhalation can cause a slight irritation of the first part of the respiratory tract, so it is<br />
advisable to use a dust mask.<br />
In case of accidental loss it must be picked up in the dry state and discharged in an<br />
authorised waste dump.<br />
Dry-clean the surfaces avoiding the use of water: it makes surfaces slimy and<br />
dangerous<br />
Do not disperse the product and the bags in the environment.<br />
PACKING<br />
25-kilo paper bags<br />
The specifications stated in this report have been got either through standardized tests and rules or their<br />
modifications following <strong>Pentachem</strong> systems.<br />
The methods applied can be requested to our technical service.<br />
All the data stated in this technical sheet are based on our knowledge and experience. However, before using the item differently from indicated, it is<br />
advisable to carry out preventive tests. In any case, PENTACHEM does not assume any responsibility for any damage or defect caused by the use of our<br />
products, as the employment conditions are not under our control. We also inform that our technical service is at our customers’ disposal for any<br />
information concerning the correct employment of our products.<br />
<strong>Pentachem</strong> Srl<br />
Via Galvani 3 - Zona Ind. Casarola - 47832 S. Clemente (RN) Italy<br />
Tel. +39.0541.988026 • Fax. +39.0541.989557<br />
Internet: www.pentachem.it • e-mail: info@pentachem.it - pentachem@pentachem.it
Change language