hydroxyethyl methyl cellulose for Brazil
hydroxyethyl methyl cellulose for Brazil: Benefits and Applications
Hydroxyethyl methyl cellulose, also known as HEMC, is a cellulose ether widely used in construction and building materials due to its exceptional properties. From cement-based mortars to wallpaper adhesives, HEMC provides better workability, uniformity, and stability to various applications.
HEMC is a water-soluble polymer derived from natural cellulose through chemical modification. Its unique hydrophilic and hydrophobic groups make it an excellent thickener, binder, and lubricant for a variety of materials.
Brazil may be one of the largest cement producers in the world, but it still faces challenges in terms of construction quality, durability, and sustainability. HEMC can help address these challenges by providing enhanced rheological performance, water retention, and adhesive strength to cement-based products.
HEMC is compatible with various types of cement, including Ordinary Portland Cement (OPC), Pozzolanic Portland Cement (PPC), and Slag Cement (SC). It can improve the workability of dry mixtures and prevent sagging, bleeding, and cracking during application and curing.
In addition to cement-based products, HEMC can also be used in other construction materials such as plaster, render, mortar, and grout. It improves the homogeneity and cohesiveness of wet mixtures and reduces the risk of segregation and shrinkage.
HEMC is also suitable for non-construction applications such as personal care, pharmaceuticals, and food. It can act as a stabilizer, emulsifier, and thickener for various products, including lotions, gels, ointments, pills, and sauces.
The quality and performance of HEMC depend on various factors such as the degree of substitution, viscosity, and purity. Therefore, it is essential to choose a reliable supplier that can provide consistent and high-quality HEMC.
As a leading HEMC supplier in the United States, Pakistan, Singapore, Rwanda, and the Philippines, we offer a range of grades and specifications to meet different needs and requirements. Our HEMC products are manufactured in advanced facilities under strict quality control and comply with international standards.
If you are looking for a hydroxyethyl methyl cellulose for Brazil, please contact us for more information and samples. We are always ready to provide expertise, experience, authoritativeness, and trustworthiness to help you succeed.
Faq
What are the other names for Hydroxypropyl Methyl Cellulose (HPMC)?
The viscosity of HPMC is inversely proportional to temperature, meaning that viscosity increases as temperature decreases. When we refer to the viscosity of a certain product, it generally refers to the measurement result of its 2% water solution at 20 degrees Celsius.
In practical applications, in regions with large temperature differences between summer and winter, it is advisable to use relatively lower viscosity during winter for better construction. Otherwise, at low temperatures, the viscosity of the cellulose increases, resulting in a heavier feel during application.
Medium viscosity: 75,000-100,000 (mainly used for putty)
Reason: Good water retention.
High viscosity: 150,000-200,000 (mainly used for polystyrene particle insulation mortar powder and foamed glass bead insulation mortar)
Reason: High viscosity, reduces mortar dusting and sagging, improves construction.
However, in general, higher viscosity provides better water retention. Therefore, many dry mortar manufacturers consider using medium-viscosity cellulose (75,000-100,000) instead of low-viscosity cellulose (20,000-40,000) to reduce the dosage and costs.
Why does hydroxypropyl methylcellulose (HPMC) have an odor?
For putty applications, a lower viscosity of 100,000 is sufficient, and good water retention is important. For mortar applications, higher viscosity of 150,000 is preferred. For adhesive applications, a high-viscosity, quick-dissolving product is required.
Several dissolution methods of Hydroxypropyl methyl cellulose (HPMC)
1. Whiteness: Although whiteness alone does not determine the usefulness of HPMC, higher-quality products usually have better whiteness.
2. Fineness: HPMC is typically available in 80 and 100 mesh sizes, with fewer options in 120 mesh. Finer particles generally indicate better quality.
3. Transmittance: When HPMC is dissolved in water and forms a transparent colloidal solution, higher transmittance indicates fewer insoluble impurities.
4. Specific gravity: Higher specific gravity is generally better. A higher specific gravity is often due to a higher content of hydroxypropyl, which results in better water retention.
What is the recommended viscosity of Hydroxypropyl Methylcellulose (HPMC)?
The cold-water soluble type of HPMC is surface-treated with formaldehyde, allowing it to disperse rapidly in cold water but not truly dissolve. It only dissolves when the viscosity increases. The thermal soluble type does not undergo surface treatment with formaldehyde. A higher dosage of formaldehyde results in faster dispersion but slower viscosity increase, while a lower dosage has the opposite effect.