Methyl Hydroxyethyl Cellulose for Wall Putty

Methyl Hydroxyethyl Cellulose (MHEC) for wall putty is an important additive widely used in the field of architectural coatings and dry-mixed mortars, especially in the production and construction of putty powder.

1. What is methyl hydroxyethyl cellulose?

Methyl Hydroxyethyl Cellulose (MHEC) is a non-ionic water-soluble polymer compound made from natural cellulose through etherification reaction. It has the properties of methyl cellulose (MC) and hydroxyethyl cellulose (HEC), with good solubility and film-forming properties, as well as strong water retention and thickening properties. Therefore, it is widely used in building materials, coatings, detergents, cosmetics and other fields.

2. The main function of MHEC in wall putty

Strong water retention protection

One of the core functions of MHEC is to improve the water retention of putty. After the putty is applied, it can effectively reduce the evaporation of water to the base or air, thereby extending the construction time and avoiding problems such as powdering, cracking, and delamination caused by excessive water loss.

Improve construction performance

By adjusting the consistency of putty, MHEC makes putty easier to scrape and spread evenly, improves the smoothness and comfort of construction, and reduces worker fatigue.

Improve adhesion

MHEC has certain adhesion properties, which can enhance the adhesion between putty and wall, reduce the risk of falling off, and increase the service life of putty.

Thickening and stability

MHEC can increase the viscosity of putty, prevent the sedimentation of pigments and fillers, make the ingredients more uniform, and enhance the film-forming property to improve the quality of the final coating.

Strong anti-sagging property

Putty with MHEC can effectively prevent sliding even when constructing on vertical walls, ensuring uniform and smooth coating.

3. Advantages of using in wall putty

Strong adaptability: MHEC can maintain good stability regardless of high or low temperature environments.

Environmentally friendly and safe: MHEC is derived from natural cellulose, non-toxic and non-irritating, and meets the environmental protection requirements of green building materials.

Good compatibility: It is compatible with a variety of inorganic and organic materials (such as cement, gypsum, lime calcium powder, emulsion, etc.) and is widely used.

4. Usage and recommended dosage

MHEC usually exists in powder form. In the putty formula, it needs to be evenly mixed with other dry powders first, and then stirred with water. The dosage varies depending on the product type and application scenario. The commonly recommended dosage is as follows:

Interior wall putty powder: 0.2% - 0.5%

Exterior wall putty powder: 0.3% - 0.6%

It should be appropriately adjusted according to actual construction needs, and the best formula should be determined through small tests.

5. Storage and usage precautions

Moisture-proof storage: MHEC should be stored in a dry, cool and ventilated place to avoid moisture and agglomeration.

Avoid high temperature: High temperature environment may cause product degradation and affect performance.

Gradually add water and stir: When using, avoid adding all the water at once. It is recommended to add water slowly and stir thoroughly to achieve the best dissolution effect.

Methyl hydroxyethyl cellulose, as a key functional additive for wall putty, plays a vital role in improving putty quality, improving construction performance, enhancing adhesion and water retention. With the rise of green and environmentally friendly building materials, MHEC will be used more widely, and its quality and dosage will directly affect the final performance of putty products. Therefore, choosing high-quality MHEC products and applying them scientifically and rationally are the keys to improving putty quality and construction efficiency.