HEMC High quality good porice Hydroxyethyl Methylcellulose

描述

Hydroxyethyl Methylcellulose (HEMC) is a non-ionic cellulose ether known for its versatility and performance in various applications, particularly in construction and personal care products. Below are the specifications, properties, and applications of HEMC.

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Specifications

Property	Specification
Appearance	White or light yellow powder
Methoxy Content (%)	18.0 – 24.0
Hydroxyethyl Content (%)	8.0 – 16.0
pH Value	5.0 – 8.5
Moisture Content (%)	≤ 8
Ash Content (%)	≤ 3
Mesh Size	100 mesh (98.5% pass), 80 mesh (100% pass)
Viscosity (2%, 20°C, mPa.s)	400 – 200,000

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Viscosity Grades and Applications

HEMC is available in various grades, each with specific viscosity ranges and applications:

Grade	Viscosity (mPa.s, 2% solution)	Applications
ACTA10000	9000 – 15000	Render
ACTA20000	15000 – 25000	Tile adhesive, EIFS, plaster, joint filler, grout
ACTA30000	25000 – 40000	Tile adhesive, EIFS, gypsum finishing plaster
ACTA45000	40000 – 55000	Tile adhesive, waterproofing mortar
ACTA50000	50000 – 65000	Tile adhesive, EIFS
ACTA70000	65000 – 75000	Tile adhesive, concrete adhesive

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Key Properties

• Cold Water Solubility: HEMC dissolves easily in cold water, facilitating quicker preparation times.
• High-Temperature Resistance: Maintains stability under temperatures up to approximately 75°C.
• Water Retention: Extends open time for cement hydration and improves workability.
• Lubrication: Enhances the processing characteristics of mortars and other mixtures.
• pH Stability: Remains stable within a pH range of 3 to 11.
• Thermal Gelation: Transitions to a gel state at high temperatures but reverts to liquid upon cooling.
• Film Formation: Provides waterproof and oil-proof characteristics.

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Applications

Construction:

• Used as a thickening agent and water retention agent in cement-based products like mortars, tile adhesives, and plasters.
• Improves workability and reduces cracking.

Personal Care Products:

• Acts as a thickener and stabilizer in lotions, creams, and other cosmetic formulations.

Paints and Coatings:

• Functions as a thickener and stabilizer to enhance viscosity and adhesion.

Adhesives and Sealants:

• Provides better workability and adhesion properties in various adhesive formulations.

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Market Overview

HEMC is increasingly preferred in international construction applications due to its superior thermal stability compared to other cellulose ethers like Hydroxypropyl Methylcellulose (HPMC). Its ability to retain water effectively under high temperatures makes it particularly advantageous for construction projects in warmer climates. As demand grows for high-performance building materials, HEMC’s market presence is expected to expand further, driven by its application versatility across multiple industries.

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Conclusion

Hydroxyethyl Methylcellulose (HEMC) offers a unique blend of properties that make it suitable for a wide range of applications, from construction to personal care products. With its superior thermal stability and water retention capabilities, HEMC is poised to become a leading choice in the global market for high-performance building materials and other industries.

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This article provides a comprehensive overview of HEMC, including its specifications, key properties, applications, and market trends. Feel free to share this information with your audience and use it to enhance your understanding of this versatile and effective chemical compound.