It takes multiple steps from pressing to successful firing of ceramic tiles. In order to facilitate the separation of fired tiles from pressing molds, the use of mold release agents is inseparable.
The main component of the release agent is magnesium oxide or magnesium carbonate. Magnesium oxide is an oxide of magnesium, an ionic compound. White solid at room temperature. Therefore, we can often see the distribution of white powder on the back of the tile.
Generally speaking, the combustion temperature of high-quality tiles exceeds 1200-1300 °. At this temperature, the release agent will burn into crystals at high temperatures, leaving very little release agent on the tile. However, the combustion process and conditions of miscellaneous brands or small tile workshops cannot reach such high combustion temperatures, so the tiles produced have a large amount of mold release agent residues.
A large amount of release agent remains on the back of the tile, just like wearing a raincoat on the back of the tile. Whether it is cement mortar or tile adhesive (water-based tile adhesive), it cannot directly penetrate and combine with the tile. The release agent is powder, and the tile adhesive is directly brushed. On the release agent, the whole is damaged, resulting in the failure of the tile adhesive to form a film. Even if some tile adhesives can hardly form a film, due to the isolation of the release agent, the external force is easily peeled from the back of the tile and loses the bonding effect.
The release agent is not removed, and the whole tile falls off.
Therefore, tiles with a large amount of mold release agent residues on the back of the tiles have a greater risk of hollowing out. In order to lay strong tiles, the release agent on the back of the tiles must be cleaned.
cleaning method
1. Use a towel or a steel brush to directly clean the tiles with a small amount of mold release agent residue;
2. If there is a large amount of mold release agent residue, it is difficult to clean, and the back of the tile needs to be wet soaked. After the release agent absorbs water and becomes soft, brush it off with a steel ball, and finally rinse it with water;
3. The effect of using a special release agent cleaning solution is also.
Since the release agent is an inevitable product in the ceramic tile production process, in order to lay the tiles, we still recommend that the tile workers clean as much as possible before construction. Although the steps are cumbersome, it will be very effective to prevent the tiles from falling off.
Disclaimer: The picture materials and articles on this platform are from the Internet, so the copyright belongs to the original author. If your copyright and interests are infringed, please contact us, we will apologize and delete it quickly. Article source: Internet
Latest news
- The Combination and Foaming Process of
- Famous tire enterprise with multiple d
- Ministry of Commerce Initiate a final
- The Effect of Carbon Black on the Cutt
- Stop work orders encounter rising pric
- Lanzhou Petrochemical's carboxylated n
Contact us
- ADD: Room 4210, CEC Business Hall, No. 121-4, Nanjing South Street, Heping District, Shenyang
- TEL: 13644907299
- FAX: 024-25361668
- E-mail: boss@long-green.cn
> Company new