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The performance of Hydroxypropyl Methyl Cellulose
HPMC is non-ionic cellulose ether, appearance is white powder, odorless and tasteless, soluble in water and most polar organic solvent and suitable proportion of ethanol / water, propanol / water, two trichloroethane, insoluble in ether, acetone, ethanol, in cold water swelling into colloidal solution clear or slightly turbidity. Aqueous solution with surface activity, high transparency, stable performance. The HPMC has a thermal gel properties, product solution formed after the gel precipitation heating, cooling after dissolving products of different specifications, different gel temperature. Solubility varies with the change of viscosity, lower viscosity, higher solubility, different specifications of HPMC its properties have some differences, HPMC pH value is not affected dissolved in water. HPMC has a thickening ability, Pai salinity, PH stability, water retention, dimensional stability, excellent film-forming properties and a wide range of resistance enzymes, dispersion and adhesion characteristics.
In latex paint and water soluble resin as film-forming agent, thickener, emulsifier and stabilizer, so that the coating has good wear resistance, uniform coating and adhesion, and improve the surface tension and PH stability, and the compatibility of the metallic color material, in water-based paint, the product is stored excellent stability, maintain uniform viscosity, so that the pigment dispersion, and basically pH value is not affected.
-- water retention
The main effect of cellulose in the putty is water retention, adhesion, lubrication effect. With high water, wipe the surface optical properties, improved homogeneity. Avoid node PI powder phenomenon, improve the anti shrinkage and crack resistance, improve the anti dropping performance, and scraping up more comfortable, labor, improve work efficiency.
Thermal insulation mortar system bonding mortar and plaster mortar: cellulose in this material, mainly adhesive, water retention and increase the intensity effects. With the improvement of construction, high water resistance, hanging ability. To improve the anti dropping capability, improve the anti shrinkage and crack resistance, improve the adhesive strength, improve work efficiency.
In the production of synthetic resin, plays a role of colloid protecting agent, it can effectively prevent the condensation particle aggregation. In the vinyl chloride (VC) dispersion system directly affects the quality of products of PVC resin and its processing and products of the floating polymerization; improve the thermal stability and control of particle size distribution (both regulation of PVC density) of high quality cellulose ether PVC resin prepared, in addition to ensure performance in line with international standards, but also has apparent. Good, excellent particle characteristics and excellent melt rheological behavior.
Mainly as a thickening agent in the interface agent, can improve the tensile strength and flexural strength etc.. To improve the surface coating, enhance the adhesion, improve the mortar bond strength. Good permeability, improve the uniformity of the interface. Enhanced lubricity and fluidity of mortar, easy coating, improve work efficiency.
-- the construction of
Ceramic tile adhesive tile adhesive in in retaining agent and adhesive, construction performance can be greatly improved adhesive, adhesive force, allowing open longer and stronger to prevent excessive water loss shedding tiles. Can improve the workability, good water retention, enhance the cohesive force, high anti hanging. To improve the efficiency of clay bricks, improves the tiling efficiency, improve the bond strength and shear strength.