Hydroxypropyl methyl cellulose HPMC for Honeycomb Ceramics

●HPMC has the properties of hot gel and is widely used as a binder in ceramic production.

●HPMC strong molding ability, extrusion molding ceramic embryo body strength is high, not easy to deformation.

●HPMC good film lubricity is conducive to extrusion molding, keep the embryo body smooth, round and delicate.

●HPMC is conducive to the operation of membranes, reduce friction coefficient, maintain smooth extrusion flow.

●HPMC has water retention characteristics, can ensure that the embryo body in the process of stereotypic drying, not due to dehydration too fast cracking.

●Honeycomb ceramic products have a very dense internal structure after sintering

●HPMC at 280-300℃ carbonization, will not react with the later noble metal coating.

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Product Details

HPMC(Hydroxypropyl methyl cellulose) is mainly used in the field of honeycomb ceramics. Honeycomb ceramics were first used to purify the exhaust gas of small cars. Now they have been widely used in chemical industry, electric power metallurgy, petroleum, electronics, electrical appliances, machinery and other industries. With the development of technology, more and more thin～walled honeycomb ceramics are used. Cellulose ether plays an important role in the production of thin～walled honeycomb ceramics, and has an obvious shape preserving effect on the green body.

Specification

Type Item	HPMC
Methoxy %	28.0～30.0
Hydroxypropyl %	7.0～12.0
Gel temperature ℃	58.0～64.0
Viscosity mPa.s	4000,6000,8000,10000
pH	5.5～8.0
Loss on drying %	≤4.5
Burning residue %	＜1.0
Whiteness %	≥83
Transmittance %	≥90
Bulk density g/L	400～500
Iron content ppm	≤30

Characteristics of honeycomb ceramics

1. after adding HPMC, the operability of honeycomb ceramic mold can be improved.

2. after HPMC was added, the honeycomb ceramic products had better blank strength.

3. HPMC has good lubricity, which is conducive to the extrusion molding of honeycomb ceramics and improves the product qualification rate.

4. HPMC can make honeycomb ceramic products smooth and delicate.

5. HPMC can make honeycomb ceramic products have a very dense internal structure after combustion.

6. HPMC plays an important role in keeping the shape of honeycomb ceramics, which can ensure the dimensional accuracy of products, ensure the uniformity of wall thickness and reduce the scrap rate.

HPMC for honeycomb ceramics HPMC