Hydroxypropyl starch ether applied in putty powder

Starch ether is a commonly used putty powder additive. The application of starch ether in putty powder can improve the performance and process of putty powder, improve the bonding strength, filling and water resistance of putty powder, and ensure the quality and service life of putty powder. 

Mainly used in the following aspects:

1. Thickener: Starch ether can be used as a thickener for putty powder to increase the viscosity and consistency of putty powder, enhance its coating and filling properties, reduce the number of coating times and coating thickness, thereby improving construction efficiency.

2. Water-retaining agent: Starch ether can be used as a water-retaining agent for putty powder, which can slow down the drying speed of putty powder, improve the ductility and filling property of putty powder, and avoid cracking problems caused by premature drying of putty powder during construction.

3. Wall-preserving agent: Starch ether can be used as a wall-preserving agent for putty powder to improve the anti-shrinkage and anti-crack performance of putty powder, and reduce the problem of cracking and falling off of putty powder during the drying process.

4. Hydration control agent: Starch ether can be used as a hydration control agent for putty powder to adjust the hydration speed and reaction degree of putty powder, and improve the water resistance and bonding strength of putty powder.

5. Stabilizer: Starch ether can be used as a stabilizer for putty powder to improve the stability and durability of putty powder and avoid problems such as stratification and agglomeration of putty powder during storage and use.

The use of starch ether in putty powder mainly has the following application requirements and advantages:

Application requirements:

1. Good thickening effect: As a thickening agent in putty powder, starch ether needs to have a good thickening effect to increase the viscosity and consistency of putty powder and enhance its coating and filling properties.

2. Good dry shrinkage resistance: As a wall protecting agent for putty powder, starch ether needs to have good dry shrinkage resistance to avoid problems such as cracking and delamination of the putty powder after drying.

3. Good hydration control performance: Starch ether can be used as a hydration control agent for putty powder. It needs to have good hydration control performance to adjust the hydration speed and reaction degree of putty powder.

Advantage:

1. Enhance coating and filling properties: Starch ether can increase the viscosity and consistency of putty powder, enhance its coating and filling properties, reduce the number of coatings and coating thickness, thereby improving construction efficiency.

2. Improve the crack resistance: Starch ether can improve the dry shrinkage resistance and crack resistance of putty powder, and reduce the cracking and delamination problems of putty powder after drying.

3. Improve water resistance: Starch ether can improve the water resistance of putty powder and prevent the putty powder from absorbing water, swelling and deformation in a humid environment.

4. Improve quality stability: Starch ether can improve the stability and durability of putty powder, improve the quality stability of putty powder, thereby improving the quality and service life of putty powder.

5. Environmental protection and safety: Starch ether is a natural and non-toxic material that will not cause pollution or harm to the environment and human body, and has good environmental protection and safety.