Gypsum Based Plaster
Cellulose ethers are a critical building block for gypsum based plasters especially with machine application. WALOCEL™ cellulose ethers from Dow enhance the lubricity of dispersed particles, resulting in a smooth, easily mixed, homogeneous plaster. These products improve water retention - the key property imported by the cellulose ether in gypsum-based plasters - preventing loss of water to the absorbing substrate and allow for proper setting. Prolonged working time contributes to saving time and costs as they allow extending the time the plaster can be applied and worked.
Furthermore, WALOCEL cellulose ethers bring consistency and plasticity to the mix for excellent workability. Plasters made with these additives spread and even out easily with a 'feel' that users appreciate. They enhance the bonding of the plaster to a variety of substrates and allow for a greater resistance to sagging. Plasters formulated with WALOCEL cellulose ethers adhere firmly as soon as applied.
The capability of WALOCEL cellulose ethers to retain water enables the plaster to hydrate over a longer period of time and develop a high mechanical strength.
Controlled and stable setting is the most important quality criteria for gypsum plaster. Dow Construction Chemicals have conducted specific lab tests to quantify the effects of cellulose ethers, setting retarders and accelerators.
Techline 10 (160KB PDF)
WALOCEL™ Methyl Cellulose for cement render:
Robust performance in a range of cement qualities
Standards for Plaster:
- EN 13279-1 Gypsum binders and gypsum plaster Part 1: definitions and requirements
Please select a product type below to obtain a list of recommended products for this application and to access the respective technical data sheets: