Tiles are one of the most commonly used construction elements. But to ensure that their performance is top class and that their layout is perfect, we often have to use tile additives. These additives have multiple uses. It is used to enhance the tile’s aesthetic value and for correcting any errors that occurred during the manufacturing process. It is also used to modify the finished product. In short, an additive is critical in improving the look and performance of the tile.
Manufacturers of tiles additives use different chemicals as additives. The material used also helps in enhancing the function of the additive. Accordingly, it can improve dry bending strength and glazing or solve problems like black core and degasification. Some of the common materials used for additives are:
Not used as widely because of its fairly rare appearance, hectorite is rich with magnesium. It has a small size, but can expand up to 35 times. This means a high surface area, which in turn increases ionic and hydroxide bonding. So, hectorite is effective even in small applications. This allows for larger production batches. Glazing can be carried out without worrying about warping. It is a very effective lubricant, especially in extrusion processes.
Magnesium Alumina Silicate
Magnesium Alumina Silicate improves adhesive strength. In some cases, it is found to improve it by more than 80%! Apart from making the tile strong, it also acts as a more effective substitute to mineral thickeners and cellulose ether in glazing. It improves glazing by allowing the glaze to dry quickly without leaving any cracks. The glazing is also very stable and does not spoil even over a long period. To make matters efficient for manufacturers of tiles additives Magnesium Alumina Silicate works well in suspensions an can be easily removed from the ball mill. It does not need sulfates or phosphate dispersants.
Borates are boron-containing oxyanions. A derivative of borate is used in clay tiles. Used in sugar suspension, sodium pentaborate is reduces the need for high temperatures of prolonged firing in the manufacturing process, thus reducing fuel costs. Borate improves the strength, durability, resistance to abrasions, efflorescence and porosity. The sugar suspension is necessary to prevent the borate from migrating to the surface and controlling its dissolution. The sugar suspension is partly necessary to control the highly soluble borate. It ensures that the dissolution of borate is even spread. What we get is a very even distribution of borate in the tile as well even verification. The sugar burns off during the tile firing.
This material is mostly used for ceramic and glass tiles. Manufacturers of tiles additives use different grades when making barium carbonate because it has a wide range of uses. It is used frequently in glass tile manufacturing, especially for special glasses tiles. It helps in decreasing the solubility of glass, while increasing its density and brilliance.
PVOH and PVB
They are used as temporary binders in ceramic tiles. They can be equally useful in laminated tiles and glass. One of their biggest advantages is that is considered to be environment friendly. If disposed properly, these do not leave any residue. PVOH and PVB are used to control the shrinkage of ceramic tiles during manufacturing. Hence, it is very important in maintaining the integrity of the tile.
Different types of mineral dispersants are used in the ceramic industry. Mineral dispersants of varying molecular weights are used with a varied pH ranges and neutralising agents. They are used in both floor grout and wall tiles.
Wollastonite is very useful as a reinforcing mineral fiber for ceramics tiles. As reinforcing agent, it can be very handy when working with fine ceramic. It also improves crack resistance, green strength, and dimensional stability. This helps in reducing costs during tile manufacturing. Two of Wollastonite’s biggest advantages over other additives are that it is low-cost and non-toxic.
It is a type of clay that is used to improve plasticity. Bentonite is a popular additive because it aids the glazing process. It helps the clay to set or stick and improves its workability. It improves the drying rate of glazes. Some varieties are also used for hardening the glaze and tule. You can find different grades and varieties from manufacturers of tiles additives.