Due to factors such as air temperature, humidity, wind pressure, and wind speed, the volatilization rate of moisture in gypsum-based products will be affected.
So whether it is in gypsum-based leveling mortar, caulk, putty, or gypsum-based self-leveling, hydroxypropyl methylcellulose ether (HPMC) plays an important role.
Water retention of BAOSHUIXINGHPMC
Excellent hydroxypropyl methylcellulose (HPMC) can effectively solve the problem of water retention under high temperature.
Its methoxy and hydroxypropoxy groups are evenly distributed along the cellulose molecular chain, which can improve the ability of the oxygen atoms on the hydroxyl and ether bonds to associate with water to form hydrogen bonds, making free water into bound water, thereby Effectively control the evaporation of water caused by high temperature weather to achieve high water retention.
Constructability of SHIGONGXINGHPMC
Correctly selected cellulose ether products can quickly infiltrate in various gypsum products without agglomeration, and have no negative impact on the porosity of cured gypsum products, thus ensuring the breathing performance of gypsum products.
It has a certain retarding effect but does not affect the growth of gypsum crystals; it ensures the bonding ability of the material to the base surface with appropriate wet adhesion, greatly improves the construction performance of gypsum products, and is easy to spread without sticking tools.
Lubricity of RUNHUAXINGHPMC
High-quality hydroxypropyl methylcellulose can be evenly and effectively dispersed in cement mortar and gypsum-based products, and wrap all solid particles, and form a wetting film, and the moisture in the base will gradually dissolve over a long period of time. release, and undergo hydration reaction with inorganic gelling materials, thereby ensuring the bonding strength and compressive strength of the material.
HPMC
Product Index
| Items | Standard | Result |
| Exterior | White powder | White powder |
| moisture | ≤5.0 | 4.4% |
| pH value | 5.0-10.0 | 8.9 |
| Screening rate | ≥95% | 98% |
| wet viscosity | 60000-80000 | 76000 mPa.s |
Product advantages
Easy and smooth construction
Non-stick scraper to improve the microstructure of gypsum mortar
No or little addition of starch ether and other thixotropic agents
Thixotropy, good sag resistance
Good water retention
Recommended application field
Gypsum plaster mortar
Gypsum Bonded Mortar
Machine sprayed plaster plaster
caulk
Post time: Jan-19-2023