Hot water dissolution method: Since HPMC does not dissolve in hot water, HPMC can be uniformly dispersed in hot water at the initial stage, and then quickly dissolved during cooling. Two typical methods are described as follows:
Read MoreThere are many characteristics and benefits of hydroxypropyl methylcellulose used in building materials. Qingquan Chemical will give you a detailed introduction:
Characteristics of hydroxypropyl methylcellulose
Cement mortar: improve the dispersibility of cement and sand, greatly improve the plasticity and water retention of mortar, and improve the strength of cement.
HPMC used in Tile adhesive: to improve the plasticity, water retention and glue relay of ceramic tile mortar, to prevent powder.
Coating of fireproof materials such as asbestos: as suspension agent, fluidity improver, and improved adhesive relay on basement.
Gypsum plaster: improve the water retention and processing, and improve the adhesion of the base.
In the application of building materials, hydroxypropyl methylcellulose has its unique properties from mixing to dispersion to construction, as follows:
Firstly, compounding and configuration
1.Cement mortar: HPMC improves the dispersibility of cement-sand, greatly improves the plasticity and water retention of the mortar, has an effect on preventing cracks, and can enhance the strength of cement.
2. Tile cement: HPMC improves the plasticity and water retention of the pressed tile mortar, improves the adhesive force of the tile, and prevents chalking.
3. Coating of asbestos and other refractory materials: HPMC is used as a suspension agent, fluidity improver, and also improves the adhesion to the substrate.
The instant Hydroxypropyl methylcellulose (HPMC) disperses quickly in cold water and disappears in the water. At this time, the liquid has no viscosity, because HPMC is only dispersed in water and does not really dissolve. In about 2 minutes, the viscosity of the liquid gradually increased, forming a transparent viscous colloid.
Read MoreWhat is Hydroxypropyl methylcellulose(HPMC)?
hydroxypropyl methylcellulose(HPMC) CAS no. : 9004-65-3,is white to slightly off-white fibrous or granular powder,it is a synthetic modified natural polymer,and a nonionic cellulose ether with odorless and tasteless. HPMC can increase properties of gelation, surface activity, water retention,thickening, adhesion, dispersion, emulsification, film-forming, suspension, providing protective colloids and other properties.
