HPMC Description
View Details Hydroxypropyl methyl cellulose (HPMC) is a natural polymer materials as raw materials,through a series of chemical processing and prepared non-ionic cellulose. It contains almost methyl cellulose(MC) of all the performance, your first choice for production of high quality building materials additives.To meet the needs of environmental protection, Our product with high water retention, dispersion, good fineness, good work ability, easy dissolution characteristics.It suitable for dry mortar building, both inside and outside wall putty powder milk (cream), adhesives, caulks, interface agents, coatings, self-leveling agent of new building materials. CAS NO.: 9004-65-3 Other Names: Hypromellose EINECS No.: 220-971-6 Purity: 99.9%min Place of Origin: Hebei, China Brand Name: HONGHAI Packing: 25Kg/bag Certification: ISO Application: Construction additives HS Code: 3912390000 Grade: Industrial grade Supply Ability:1600 MTS/Month Product Name HPMC (Hydroxypropyl Methyl Cellulose) Content of Methoxy 18%-32% Content of Hydroxypropyl 8%-16% Temperature of Gelation 54℃-75℃ Water ≤5% Ash ≤2% PH Value 7-8 Appearance White Powder Fineness 80-100 Mesh Viscosity 200 to 200,000 it can be customized according customer needs. Surface treatment Cold water instant type:surface treated Non-instant type:without surface treatment HPMC characteristics HPMC Applications HPMC(Hydroxypropyl Methyl Cellulose) with high water retention, dispersion, good fineness, good work ability, easy dissolution characteristics.It suitable for dry mortar building, both inside and outside wall putty powder milk (cream), adhesives, caulks, interface agents, coatings, self-leveling agent of new building materials. HPMC For Wall putty Water retention: maximized water content in slurry. Anti-sagging: when spreading a thicker coat corrugation can be avoided. Increased mortar yield: depending on the weight of the dry mixture and appropriate formulation ,HPMC can increase the mortar volume. If you are looking for more details, kindly visit SLEO Chemical. HPMC For Exterior Insulation and Finish System ( EIFS )/ETICS Improved adhesion. Good wetting ability for EPS board and substrate. Reduced air entrancement and water uptake. HPMC For Self-leveling Protection from water exudation and material sedimentation. No effect on slurry fluidity with low viscosity HPMC, while its water retention characteristics improve the finish performance on the surface. HPMC For Crack Filler Better workability: proper thickness and plasticity. Water retention ensures prolonged work time. Sag resistance: improved mortar bonding ability. HPMC For Tile Adhesives Better workability: lubricity and plasticity of plaster is ensured, mortar can be applied easier and quicker. Good water retention: prolonged opening time will make tiling more efficient. Improved adhesion and sliding resistance: especially for heavy tiles. HPMC For Dry mix mortar Easy dry mix formula due to cold water solubility: lump formation can be easily avoided, ideal for heavy tiles. Good water retention: prevention of fluid loss to the substrates, the appropriate water content is kept in mixture which guarantees longer concreting time. HPMC For Cement Plaster Increased water demand: increased open time, expanded spry area and more economical formulation. Easier spreading and improved sagging resistance due to improved consistency. FAQ Q: Are you trading company or manufacturer ?
A: We are factory.
Q: Do you provide samples ? Is it free or extra?
A: Yes, we could offer 200 g free sample for each grade.
More than 1kg, we provide free samples, but the freight will be afford by clients.
Q: How can I get the samples?
A: Send sample request by email or whatsapp, we'll dispatch samples by DHL or TNT.
Q: How long is your delivery time?
A: Generally it is 3-5 days if the goods are in stock.
For big orders 50-200 tons, we could delivery within 20 days.
Q: What is your terms of payment ?
A: Payment ≤1000USD, 100% in advance.
Payment>1000USD, T/T(30% in advance and balance against B/L copy)or L/C at sight.
Q: How about OEM branding and packing?
A: Blank bag, Neutral bag available, OEM bag also available.
Q: How to ensure stable quality
A: (1) All production process is automatic controlled by DSC system, no manual operation, so the quality of different batches are consitent.
(2) We test the sample before sending to you, and delivery goods at same quality for normal orders.
(3) Our QC and Lab will test all the raw materials purchased, test all finished products before delivering.
Hydroxypropyl Methylcellulose (HPMC) plays a significant role in enhancing the performance and properties of gypsum plaster. This versatile additive serves various functions, contributing to the workability, adhesion, water retention, and overall quality of the plaster.
Chemical Structure and Properties:
HPMC belongs to the family of cellulose ethers, which are derived from cellulose, a naturally occurring polymer found in plant cell walls. Through chemical modification, hydroxypropyl and methyl groups are introduced into the cellulose backbone, resulting in the formation of HPMC. This modification imparts unique properties to HPMC, including water solubility, thermal gelation, film-forming ability, and thickening characteristics.
Manufacturing Process:
The production of HPMC involves several steps. Initially, cellulose is extracted from plant sources such as wood pulp or cotton. Subsequently, this cellulose undergoes etherification, where hydroxypropyl and methyl groups are attached to the hydroxyl (-OH) functional groups of the cellulose molecules. The degree of substitution (DS) of these groups can be controlled during synthesis, influencing the properties of the final HPMC product. Finally, the resulting HPMC is purified, dried, and processed into various grades suitable for different applications.
Application in Gypsum Plaster:
HPMC is widely used as an additive in gypsum plaster formulations due to its multifunctional properties. When incorporated into the plaster mix, HPMC acts as a rheology modifier, controlling the viscosity and flow characteristics of the slurry. This enhances the workability of the plaster, allowing for easier application and smoother finishing.
Moreover, HPMC serves as a water retention agent, effectively reducing water loss during the setting and drying stages. This prolonged hydration promotes proper curing of the plaster, leading to enhanced strength and durability of the finished product. Additionally, HPMC improves the adhesion of the plaster to various substrates, ensuring better bonding and reducing the risk of delamination or cracking over time.
Benefits of HPMC in Gypsum Plaster:
Improved Workability: HPMC imparts a creamy consistency to the plaster mix, making it easier to spread and manipulate during application.
Enhanced Water Retention: By reducing water evaporation, HPMC prolongs the hydration process, resulting in better curing and overall strength.
Superior Adhesion: HPMC promotes strong adhesion between the plaster and substrate, preventing detachment and ensuring long-term structural integrity.
Controlled Setting Time: The presence of HPMC helps regulate the setting time of gypsum plaster, allowing for adequate working time without compromising on final hardness.
Crack Resistance: HPMC contributes to the cohesiveness of the plaster mix, minimizing the occurrence of shrinkage cracks and improving the surface finish.
Hydroxypropyl Methylcellulose (HPMC) is a valuable additive in gypsum plaster formulations, offering a wide range of benefits that contribute to improved performance and quality. Its role as a rheology modifier, water retention agent, and adhesion promoter makes it indispensable in the construction industry, where gypsum plaster is extensively used for interior finishing applications. By understanding the chemical properties and functionalities of HPMC, manufacturers and applicators can optimize plaster formulations to meet specific performance requirements and achieve superior results.
The company is the world’s best Hydroxypropyl Methylcellulose (HPMC) For Gypsum Plasters supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.