Zibo Hondo Chemical Co., Ltd. is one of the most experienced manufacturers and suppliers of putty powder cmc in China. Our factory offer high quality products made in China with competitive price. If you have any enquiry about quotation, please feel free to email us.
Hondo Putty powder CMC is a water-soluble high-molecular natural derivative, which has excellent properties such as thickening, water retention, film-forming and suspension stability. It is specifically developed for dry-mix putty powder systems with high filler content and cementitious materials, where stable rheology, controlled water retention and consistent construction performance are critical for final wall quality.Due to its unique molecular structure and excellent solution properties, Cellulose CMC has become an indispensable and crucial additive in the formulation of putty powder.Through controlled degree of substitution (DS) and optimized viscosity distribution, Hondo Putty Powder CMC provides predictable performance in both interior and exterior wall applications, even under high temperature or low humidity conditions.
Function
Hondo Sodium Carboxymethyl cellulose -Putty powder CMC used mainly plays four major roles in putty powder: thickening, water retention, bonding and dispersing agent. Carboxymethyl cellulose can increase the viscosity and rheology of putty powder, making it with excellent construction performance, and easy to apply and spread. Cellulose CMC can form a uniform and smooth putty layer on the base surface, which is helpful for improving the flatness and smoothness of the wall surface. The water retention property of putty powder CMC gum can effectively prevent the putty powder from drying out too quickly during the construction process, allowing the putty powder have sufficient time for the hydration reaction, thus improving the strength and durability of the putty layer. Hondo putty powder CMC can also improve the adhesion performance of the putty powder, enhance the adhesion between the putty and the base layer as well as the subsequent coating layers, reduce the occurrence of quality problems such as peeling and cracking, to improve the smoothness and efficiency of construction. Finally, it can also play a certain dispersing role in the formulation, helping various fillers to be evenly distributed and improving the stability and storage properties of the putty. Therefore, adding an appropriate amount of high-quality putty powder CMC can significantly improve the comprehensive performance of putty powder and the construction experience.
Main Application
-
1. Interior Putty
Cellulose CMC with high purity, low ash content and low impurities can ensure the fineness and whiteness of the putty. Low ash content is particularly important for premium interior putty, as it directly affects surface brightness and paint compatibility after drying.Putty powder CMC can moderately thicken the putty, prevent sagging, improve the smoothness of scraping, maintain the stability of the slurry during storage, and avoid sedimentation.
-
2. Exterior Wall Putty
Alkali-resistant CMC can adapt to highly alkaline environments such as cement or lime calcium. Hondo Putty Powder CMC is designed to maintain viscosity stability and molecular integrity under high-pH conditions commonly found in exterior wall systems.CMC cellulose can improve the adhesive force with the base layer (such as cement mortar). It can improve the stability of the slurry and prevent filler sedimentation.
-
3. Repair-type Thick-layer Leveling Putty
Sodium CMC products with high viscosity and strong water retention ability are used in putty powder for large-area patching and wall surface repair. The powerful water retention effect of putty powder CMC enables the putty powder to support the slurry and avoid collapse during the scraping of thick layers.This performance is critical for thick-layer applications where conventional cellulose ethers may fail due to insufficient structural support. It maintains the workability during construction, making it convenient for large-area operation.
Application and Solution
Problem 1: Putty dries too fast, leading to cracking and poor surface strength
Issue:
In high-temperature or low-humidity construction environments, putty powder often loses water too quickly. This rapid evaporation prevents full hydration of cementitious materials, resulting in early-stage shrinkage cracks, surface powdering, and reduced bonding strength to the substrate.
Solution:
Using Hondo Putty Powder CMC as a water retention agent, the evaporation rate of water is effectively controlled. The optimized molecular structure of this construction-grade CMC ensures sufficient hydration time for cement and gypsum, significantly reducing cracking risks and improving final surface strength and durability-especially critical for interior and exterior wall putty applications.
Problem 2: Filler sedimentation and unstable slurry during mixing and application
Issue:
Putty powder formulations typically contain more than 70–80% fillers such as calcium carbonate or talc. Without proper suspension support, heavy fillers tend to settle during mixing, storage, or on-site application, leading to inconsistent performance and uneven wall finishes.
Solution:
CMC for putty powder provides a stable three-dimensional polymer network that acts as an effective suspension and dispersing agent. This structure keeps fillers uniformly distributed, prevents segregation, and ensures batch-to-batch consistency. For large-scale putty manufacturers, this stability improves storage performance, reduces quality complaints, and enhances overall construction reliability.
Advantage
1. Strong Water Retention Property
Sodium CMC has excellent water retention ability.Laboratory testing shows that appropriate addition levels of Putty Powder CMC can significantly reduce surface water loss, especially under high-temperature and low-humidity construction environments. In high-temperature or low-humidity environments, it can prevent surface powdering and peeling, and improve the uniformity of the hardening of the putty layer. At the same time, the water retention effect of putty powder CMC can also slow down the evaporation rate of water in the putty powder, this can conducive to the full hydration of cementitious materials such as cement and gypsum, improving the strength and hardness of the putty layer. Meanwhile, it also avoids problems such as surface cracking and peeling caused by the excessive and rapid loss of water, and enhances the adhesive force between the putty layer and the base wall.
2. Stable Suspension and Uniform Dispersion
The proportion of fillers (such as heavy calcium carbonate, talcum powder, lime calcium, etc.) in putty powder is very high, often more than 70–80%. Cellulose gum CMC provides a suspension support structure, which is particularly important for high-filler systems.This structural support helps prevent segregation during mixing, transportation and on-site application, ensuring consistent performance for every batch.
Putty powder CMC can stably disperse the fillers and prevent heavy materials (such as heavy calcium carbonate powder and fumed silica) from settling due to gravity, enabling all components in the putty formula to maintain uniformity for a long time after mixing.
3. Enhanced Adhesion Performance
Sodium CMC combines with inorganic fillers (such as gypsum and calcium carbonate) through hydrogen bonds, enhancing the adhesion between the putty and the substrate, reducing the phenomena of delamination, hollowing, and peeling, and enhancing the firmness and service life of the finished putty layer. This molecular-level interaction improves both early-stage adhesion and long-term durability of the putty system.In emulsion-based putties, it works with polymer resins to enhance the internal cohesion and form a more stable coating system.
4. Other Advantages
Fine and Dense Film Formation: By improving the uniformity of hydration and water retention performance, putty powder CMC makes the surface of the putty dense and smooth after drying and film formation, reducing surface defects such as pinholes and powdering, and laying a good foundation for subsequent coating construction.
Significant Cost-effectiveness: Due to its high-efficiency thickening and water retention properties, the amount of other high-priced additives (such as some redispersible latex powder, etc.) in the putty powder formula can be appropriately reduced, thus reducing the overall production cost.This cost optimization is especially valuable for large-volume manufacturers and competitive markets.
Improved Construction Smoothness: Putty powder CMC gives the putty with good lubricity and flexibility, making the scraping process smooth and fluent, with a comfortable feel when using the trowel, and greatly reducing the resistance during scraping and surface defects.
Specification
|
Spec. |
Standard |
|
Appearance |
White or yellowish powder |
|
Moisture |
≤10.0% |
|
DS |
≥0.80 |
|
Purity |
Technical or high purity |
|
pH |
7.0～10.0 |
|
Viscosity (1% or 2% solution) |
5-8000 mPa·s |
Quality Control System
To ensure consistent quality and performance, Hondo Chem implements a strict quality control system covering the entire production process:
Raw Material Control: Selected high-purity cellulose with controlled polymerization degree
Production Process Control: Standardized etherification and drying processes to ensure stable DS and viscosity
Finished Product Inspection: Viscosity, moisture, DS, pH and purity tested for each batch
Pre-shipment Inspection: Appearance, packaging integrity and batch traceability verification
Quality Assurance: Continuous technical support and formulation guidance for customers
Why Choose Hondo Putty Powder CMC?
Specialized in construction-grade CMC for putty powder applications
Stable quality for large-scale production and export markets
Technical support for formulation optimization
Custom viscosity and performance grades available
Proven performance in interior, exterior and repair putty systems
Packing & Storage
Storage:
1. Carboxymethyl cellulose should store in a cool, dry, clean, ventilated environment. Temperature Max. 70℃, with relative humidity ≤80%.
Storage:
2. The CMC for pharmaceutical and food grade should not be put together with the toxic substance and harmful substance or substance with peculiar smell during transportation and storage.
Storage:
3. Since the date of production, a preservation period of sodium CMC should not exceed 4 years for the industrial product and 2 years for the CMC in pharmaceutical and food industry.
Storage:
4. The CMC should be prevented from water and package bag damaging during transportation.
Packing:
25kg kraft paper bag with PE inner, or as clients request.
Conclusion
Carboxymethyl Cellulose - CMC for putty powder industry is derived from natural cellulose, which is safe and environmentally friendly. The application of putty powder CMC can systematically improve the workability, water retention property, durability and appearance quality of the product. It not only improve the user experience but also effectively strengthens the comprehensive performance of the putty layer.
FAQ- for Hondo Putty Powder used CMC
Q1: What is the recommended dosage of Putty Powder CMC?
A: Typical dosage ranges from 0.2%–0.5%, depending on formulation and filler content.
Q2: Is this CMC suitable for high-alkali cement-based putty?
A: Yes, alkali-resistant grades are designed for cement and lime-based systems.
Q3: Can viscosity be customized?
A: Yes, different viscosity grades are available according to application requirements.
Hot Tags: putty powder CMC, China putty powder CMC manufacturers, suppliers, factory, CMC for Coatings, CMC For Painting Industry, CMC for coatings and paints, Dispersible Painting CMC, Coating grade CMC, CMC in water-based paints
