Item	Imodified starch for gypsum board
Model	DN -RM-S1
Appearance	White or off-white powder, free of visible impurities
Moisture Content	≤14%
Ash Content	≤0.5%
pH Value	6.0 - 8.0
Fineness (Sieving Rate)	≥98% (passing 80 - mesh sieve)
Viscosity (6% Aqueous Solution, 60℃)	10 - 30 mPa·s
Bond Strength Improvement Rate	The bond strength between the facing paper and the gypsum core is increased by ≥30% compared with ordinary products
Film - Forming Property	Forms a uniform and continuous film, effectively filling the pores of gypsum crystals
Dissolution Rate	Rapidly dissolves within 3 - 5 minutes at room temperature and disperses evenly
Sulfur Dioxide Content	≤30 mg/kg
Heavy Metal Content (Lead, Arsenic, etc.)	Complies with the safety standards of GB 1886.245 - 2016 National Food Safety Standard - Food Additive Oxidized Starch
Limit of Harmful Substances	Free of harmful substances such as formaldehyde and heavy metals, in line with green building materials standards
Viscosity Fluctuation between Batches	≤±10%
Storage Stability	No significant decline in performance after 12 - month storage in a dry environment at room temperature
Standard	25/kg per package

 

Product Introduction of modified starch for gypsum board 

In the production process of gypsum boards, starch, as a crucial additive, plays a vital role in determining product quality. Our specialized starch for gypsum board production is a high - quality product meticulously developed according to the characteristics of gypsum board production processes. With its outstanding performance and stable quality, it provides reliable production guarantees for gypsum board manufacturers.

II.modified starch for gypsum board  Core Advantages

1. Superior Adhesive Performance: During the production of gypsum boards, it forms a strong bonding force between the gypsum and the facing paper, significantly increasing the overall strength and impact resistance of the boards. Tests show that for gypsum boards produced with this product, the bonding strength between the facing paper and the gypsum core is enhanced by over 30% compared to ordinary products, effectively preventing quality issues such as paper peeling and delamination.
2. Excellent Film - Forming Property: As the gypsum slurry solidifies, the starch forms a uniform film that fills the pores between gypsum crystals, resulting in a smoother and flatter surface of the boards and improving their appearance quality. Additionally, the film - forming effect enhances the water resistance of the boards, reducing the risk of water absorption and deformation in humid environments.
3. Stable Product Quality: We adopt strict production processes and quality control systems. Every link, from raw material screening to finished product delivery, undergoes precise inspection to ensure consistent product indicators. The fluctuation range of key indicators such as viscosity, moisture content, and ash content is extremely small, providing reliable guarantees for customers' stable production.
4. High Production Adaptability: It is suitable for various gypsum board production processes, including the production of paper - faced gypsum boards, fiber gypsum boards, and decorative gypsum boards. The product dissolves quickly and has good dispersibility, allowing it to be evenly incorporated into the gypsum slurry rapidly. This reduces the mixing time, improves production efficiency, and cuts down on energy consumption costs.
5. Green and Environmentally Friendly: Using natural starch as raw materials, it contains no harmful chemicals and causes no environmental pollution during production and use. It complies with national environmental protection standards and the development trend of green building materials, helping customers create eco - friendly gypsum board products.

III. Technical Parameters

Item	Index
Appearance	White or off - white powder, free of visible impurities
Moisture Content	≤14%
Ash Content	≤0.5%
Viscosity (6% aqueous solution, 60℃)	10 - 30 mPa·s
pH Value	6.0 - 8.0
Fineness (passing 80 - mesh sieve)	≥98%
Sulfur Dioxide Content	≤30 mg/kg

IV. Application Effects

1. Enhanced Product Quality: Gypsum boards produced with this starch have higher strength, better water resistance, and more appealing appearance, meeting the requirements of the mid - to high - end architectural decoration market and enhancing the market competitiveness of customers' products.
2. Reduced Production Costs: Thanks to its good dispersibility and solubility, it can shorten the mixing time and reduce energy consumption. Meanwhile, its excellent adhesive performance reduces the reject rate, comprehensively cutting down customers' production costs.
3. Optimized Production Process: The stability and adaptability of the product contribute to optimizing production process parameters, improving the controllability of the production process, reducing production failures, and ensuring the continuous and stable operation of the production line.

V. Quality Assurance and Services

1. Quality Control: We have a professional quality inspection laboratory equipped with advanced testing equipment and professional inspectors. Products are rigorously tested to ensure that each batch meets the quality standards.
2. Technical Support: We provide comprehensive technical support services, including product usage guidance, process optimization suggestions, and problem - solving solutions. Our technical team can offer personalized technical services according to customers' specific needs to help them fully utilize the product's performance.
3. After - Sales Service: We have established a complete after - sales service system to respond promptly to customer needs. Whether it is product consultation, order tracking, or after - sales problem handling, we will provide the fastest and highest - quality service to address any concerns of our customers.
 
Choosing our starch for gypsum board production means choosing a stable, efficient, and high - quality production partner. We will continue to innovate and improve, and with better products and services, we aim to contribute to the development and progress of the gypsum board industry.
 

 
 

modified starch for gypsum board FAQ

1. What are the advantages of this starch compared with ordinary starch in gypsum board production?

This product is processed through special modification. Compared with ordinary starch, it has stronger adhesive properties, which can increase the bonding strength between gypsum and facing paper by more than 30%, effectively preventing paper peeling and delamination of the boards. It also has better film - forming properties, which can form a uniform film to fill the pores of gypsum crystals, improving the surface flatness and water resistance of the boards. In addition, the product has high stability, with minimal performance fluctuations between batches, ensuring the stability of the production process and the consistency of product quality.

2. What is the impact of starch viscosity on gypsum board production?

The viscosity of starch directly affects the fluidity and coating performance of the gypsum slurry. The viscosity of this product is controlled within the range of 10 - 30 mPa·s (6% aqueous solution, 60℃). Within this range, it can not only ensure the uniform dispersion of starch in the gypsum slurry but also give the slurry an appropriate consistency, facilitating its adhesion to the facing paper and ensuring the bonding effect and forming quality of the boards. Excessively high viscosity will result in poor fluidity of the slurry, affecting coating and forming; while too low viscosity may lead to insufficient bonding force.

3. How is the water resistance of the product reflected?

The film - forming property of the product is the key to its water resistance. During the drying process of gypsum boards, the film formed by starch can effectively block the intrusion of water and reduce the water absorption rate of the boards. Tests show that the water absorption rate of gypsum boards produced with this starch in a humid environment is reduced by more than 25% compared with ordinary products, minimizing problems such as deformation and mildew caused by water absorption.

4. How is starch added to the gypsum board production process?

Wet addition is commonly used. First, prepare the starch into an aqueous solution with a concentration of 6% - 8%, stir it evenly until it is completely dissolved. Then, during the mixing stage of gypsum raw materials, slowly add the solution to the gypsum slurry according to the formulation ratio, and continue stirring for 2 - 3 minutes to ensure thorough mixing of starch and gypsum.

5. Does the amount of starch used need to be adjusted for different types of gypsum boards?

Yes. Due to differences in production processes and performance requirements, the amount of starch used varies for different types of gypsum boards, such as paper - faced gypsum boards, fiber gypsum boards, and decorative gypsum boards. Generally, the recommended addition amount for paper - faced gypsum boards is 0.8% - 1.2% of the weight of gypsum raw materials; for fiber gypsum boards, it is 1.0% - 1.5%; and for decorative gypsum boards, which have higher requirements for surface quality, the amount is 1.2% - 1.8%. Specific amounts can be fine - tuned according to actual production conditions.

6. Is there a requirement for water temperature when dissolving starch?

It is recommended to dissolve the starch in clean water at room temperature (20 - 30℃). This temperature range ensures rapid dissolution of the starch without premature gelatinization. Too high a water temperature may cause premature gelatinization of the starch, affecting its dispersibility; while too low a temperature will prolong the dissolution time. Continuous stirring is required during the dissolution process until the solution is uniform and free of lumps.

7. How should the starch be stored? What is the storage period?

The product should be stored in a cool, dry, and well - ventilated warehouse, away from direct sunlight and moisture. The recommended storage temperature is 5 - 35℃, and the relative humidity should not exceed 70%. Under proper storage conditions, the product has a shelf life of 12 months. After expiration, the performance should be re - tested, and it can be used only after being confirmed to be qualified.

8. What are the precautions during transportation?

Use clean and dry transportation tools to prevent rain, moisture, and contamination. Avoid mixed loading and transportation with toxic, harmful, or corrosive substances. During handling, load and unload gently to prevent damage to the packaging. Once the packaging is damaged, replace the packaging materials in a timely manner to prevent the product from being exposed to a humid environment.