HPMC Hydroxypropyl Methyl Cellulose CAS 9004-65-3
HPMC Hydroxypropyl methyl cellulose CAS 9004-65-3
China Manufacture Chemical HPMC Hydroxypropyl Methyl Cellulose For Cement Thickening Agent
hydroxypropyl methylcellulose are ethers of cellulose and propylene oxide. It is easily soluble in cold water but not soluble in hot water. It is non-ionic cellulose ether and is compatible with many surfactants and polymers such as starch, guar and alginates. Solutions of ement additive hydroxypropyl methyl cellulose ether HPMC powder are pseudoplastic, some solutions show thixotropy.HPMC industrial grade Hydroxypropyl methyl cellulose methocel polymers are well-known for their ability to bind, retain water, thicken, form films, and provide many other performance benefits.
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Product name |
Hydroxy propyl methyl cellulose (HPMC) |
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Content of methoxyl |
24.0 - 30.0 |
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Content of hydroxy propyl |
9.0 - 12.0 |
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Temperature of gelation |
63℃ - 75 ℃ |
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Moisture |
max.5% |
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Ash |
max5% |
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PH value |
7 - 8 |
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Appearance |
white powder |
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Fitness |
80-100 mesh |
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Viscosity |
4,000 to 200,000 it can be customized |
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HPMC increased with methoxy content reduce, the gel point water solubility and surface activity also declind, depends on customer's situation. |
Product properties
1.Water Retention: The water retention will be enhanced, which is helpful with such problems as cement or gypsum construction material drying too fast and poor hardening or cracking due to insufficient hydration.
2. Operationality: It can enhance the plasticity of mortar and improve the coating efficiency in construction projects.
3. Adhesivity: It can make mortar attach to base material better since the plasticity of mortar is enhanced.
4. Slip Resistance: It can prevent slipping problem between mortar and the base material in construction project as a result of its thickening effect.
Physicochemical Properties
1. Exterior: White or off-white powder
2. particle size: the passing rate of 80 mesh is 100% the passing rate of 100 mesh is more than 99.5%
3. Charring density:280-300℃
4. Apparent density: 0. 25-0.70g/cm(usually around 0.5g/cm), the proportion is 1.26-1.31
5. Thermochromic temperature: 190-200℃
6. Surface tension: 2% of aqueous solution is 42-56dyn/cn.
Advantages:
• Good water retention: prolonged opening time will make tiling more efficient.
• Improved adhesion and sliding resistance: especially for heavy tiles.
• Better workability: lubricity and plasticity of plaster is ensured, mortar can be applied easier and quicker.
