Honeycomb ceramics
Adding hydroxypropyl methyl cellulose HPMC in ceramic process production, increase the plasticity and strength of the embryo body or glaze, greatly increase the lubrication effect, conducive to ball milling, in addition to suspension and stability greatly enhanced, porcelain delicate, tone 1 soft. Glaze machine smooth, good light transmittance, anti – collision, a certain mechanical strength. HPMC has thermal gel properties and is widely used as a binder in ceramic production.
The following is the quality standard of ceramic grade hydroxypropyl methyl cellulose HPMC:
Test item standard
appearance White powder or granules
Methoxy (wt%) 28.0-30.0
Hydroxypropyl (wt%) 7.0-12.0
PH value 5.5-8.0
Dry weight loss 3.0 Max
Viscosity range 5000-6500.
Burning residue 2.0 Max
Honeycomb ceramic products added hydroxypropyl methyl cellulose HPMC can achieve:
1. Operability of honeycomb ceramic product mold
2, honeycomb ceramic products better body strength
3, better lubrication performance, conducive to extrusion molding
4, the surface is smooth and smooth
5. Honeycomb ceramic products have a very dense internal structure after combustion
Honeycomb ceramics are widely used in desulfurization and denitrification of power generation and automobile exhaust treatment. With the development of technology, more and more thin-wall honeycomb ceramics are used. Hydroxypropyl methyl cellulose plays an important role in the production of thin-walled honeycomb ceramics, and its conformal effect on the billet is obvious
