Hydroxypropyl Methyl Cellulose for Ceramics
1. salt resistance: hpmc is a nonionic cellulose ether and not a polyelectrolyte, so it is strong in aqueous answer inside the presence of metallic salts or natural electrolytes. however, excessive addition of electrolytes can motive gel or precipitation.
2. floor interest: hpmc aqueous answer has surface activity function and can be used as colloid protecting agent, emulsifier and dispersant.
3. hot gel: when heated to a sure temperature, hpmc aqueous solution becomes opaque, gel and precipitate, but when constantly cooled, it returns to the authentic answer nation, and the temperature at which this gel and precipitate arise specifically relies upon on their kind, concentration and thermal fee.
4. ph- stability: the viscosity of hpmc aqueous solution is hardly laid low with acid or alkali, and the ph cost is noticeably strong within the range of 3.0-eleven.0.
5. water retention: hpmc is an effective water-maintaining agent, that is broadly used in ceramics, building materials and many different components.
6. adhesion: hpmc, as a high-tech adhesive, is used in pigments, paper, tobacco products and ceramic merchandise.
Application of low viscosity hydroxypropyl methylcellulose (HPMC) in ceramics: In the ceramic industry, it is used as an adhesive for molding surprise ceramic products, giving lubricity and water retention, and improving the original strength of raw materials.The concentrated solution is adsorbed on the surface of ceramic particles, so that the friction between particles is reduced and the lubricity is enhanced, and the manufactured molded products have the required surface smoothness and dimensional stability; The sintered ceramic products with excellent electrical properties can be obtained by using the products with low ash content.
Specification
Type Item | |
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 |
HPMC Packaging and Storage
Barrel or paper plastic bag coated with polyethylene movie inner bag.
Net weight of every bag: 25kg.
Shield from solar and rain at some point of garage and transportation.
Transportation
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