Introduction to HPMC/hydroxypropyl methyl cellulose maintaining water in lime plaster CAS 9004-65-3

Hydroxypropyl Methylcellulose (HPMC), whose Chinese name is hydroxypropyl methylcellulose, is a semi-synthetic, non-ionic cellulose ether obtained by chemically modifying natural cellulose. This white powder can form a transparent viscous solution after dissolving in water. It has excellent thickening, water retention, stability and film-forming properties. It is an indispensable multifunctional additive in many fields such as construction, medicine, and food.

Characteristics and advantages of HPMC/hydroxypropyl methyl cellulose maintaining water in lime plaster CAS 9004-65-3

Excellent water solubility: It can be quickly dissolved in cold water to form a clear and stable solution.

Efficient thickening and water retention ability: Increase the viscosity of the material, effectively reduce water evaporation, and improve work efficiency.

Good stability: It has good stability to acids, alkalis, and salts, and is suitable for a wide range of pH values.

Film-forming and protective effects: After drying, it forms a tough and transparent film to protect the substrate and prevent water penetration and evaporation.

Non-toxic and non-irritating: It has good biocompatibility and is suitable for the fields of medicine and food.

Adjustability: By changing the degree of substitution and molecular weight, its performance can be adjusted to meet different application requirements.

Specification of HPMC/hydroxypropyl methyl cellulose maintaining water in lime plaster CAS 9004-65-3

Hydroxypropyl Methyl Cellulose (HPMC) for Lime Plaster

Key Residences and Efficiency

Hydroxypropyl methyl cellulose (HPMC), with CAS number 9004-65-3, is a white, unsmelling powder extensively made use of in building and construction materials. It functions well in lime-based plasters to manage water retention. Good water retention assists the plaster set appropriately and bond highly to surfaces.

This HPMC quality liquifies conveniently in cold water. It creates a clear, viscous solution that enhances workability. Employees can apply the plaster smoothly without it drying as well quick. The material additionally lowers sagging on vertical surfaces.

Why Use HPMC in Lime Plaster?

Lime plaster needs adequate dampness to cure gradually and uniformly. Without appropriate water control, the plaster may break or lose toughness. HPMC maintains water inside the mix longer. This gives lime time to respond completely with carbon dioxide airborne– a process called carbonation.

The additive likewise improves bond. Plaster sticks much better to brick, stone, or old provide layers. This implies fewer fixings and longer-lasting finishes. In warm or dry climate, HPMC’s water-holding power ends up being even more vital.

Technical Information

– Appearance: White to beige free-flowing powder
– Viscosity (2% option, 20 ° C): 4,000– 100,000 mPa · s (differs by grade).
– pH (2% service): 6.0– 8.0.
– Dampness web content: ≤ 5%.
– Ash material: ≤ 5%.

HPMC is non-ionic and stable across a vast pH array. It does not respond with various other typical plaster ingredients like lime, sand, or pigments. Storage space is simple– keep it in a cool, completely dry location away from wetness.

Building contractors and suppliers choose this HPMC because it carries out reliably batch after set. It fulfills worldwide quality criteria and sustains sustainable building practices by decreasing waste and revamp.

Applications of HPMC/hydroxypropyl methyl cellulose maintaining water in lime plaster CAS 9004-65-3

Why HPMC Maintains Lime Plaster Moist and Workable

What Is HPMC?

HPMC (hydroxypropyl methyl cellulose), CAS 9004-65-3, is a water-soluble polymer made from all-natural cellulose. Builders and plasterers include it to lime-based plasters to improve how the mix holds water.

Just how It Functions in Lime Plaster

Lime plaster dries out slowly. This slow drying out is needed for proper carbonation– the process that makes the plaster harden over time. If water leaves the mix as well quick, the plaster cracks or powders. HPMC decreases water loss by developing a slim movie that traps dampness inside the plaster. This gives employees even more time to smooth and shape the surface area prior to it establishes.

Much Better Workability and Bond

With HPMC, the plaster really feels smoother and sticks much better to walls. It minimizes drooping on upright surfaces and assists the product stay where it’s used. Solid bond means fewer fixings later. The additive also stops active ingredients from dividing in the bucket, so every set stays consistent.

Performance in Various Problems

Hot or completely dry weather draws moisture out of plaster rapidly. HPMC counters this effect. Even in summer or gusty problems, the plaster continues to be convenient much longer. On permeable surfaces like brick or old masonry, HPMC stops the wall surface from drawing water out of the fresh coat prematurely.

Safe and Reliable

HPMC is non-toxic and extensively made use of in building, food, and drugs. In lime plaster, it does not conflict with the all-natural chemistry of lime. It simply supports the healing procedure without including hazardous chemicals. Many ready-mix lime plasters already consist of a small amount of HPMC– usually between 0.1% and 0.5% by weight– for finest results.

Company Introduction

Welcome to Concrete and More, a leading provider of high-performance concrete admixtures, including our premium concrete water reducers. With years of experience in the global market, we offer advanced solutions designed to enhance the quality and efficiency of construction projects worldwide. Our state-of-the-art manufacturing facilities ensure top-quality products that meet international standards. We pride ourselves on exceptional customer service, technical support, and tailored solutions to meet specific project needs. Partner with us for reliable, innovative, and cost-effective concrete admixtures that drive your projects forward. Explore more at www.concreteandmore.de/. Let’s build the future together!

If you have any questions, please feel free to contact us.

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of HPMC/hydroxypropyl methyl cellulose maintaining water in lime plaster CAS 9004-65-3

Frequently Asked Questions About HPMC in Lime Plaster

What is HPMC and why is it used in lime plaster?

HPMC (hydroxypropyl methyl cellulose) is a water-soluble polymer made from natural cellulose. It helps lime plaster hold water longer during curing. This improves workability and reduces cracking.

How does HPMC help retain water in lime plaster?

HPMC forms a thin film around the plaster particles. This slows down water evaporation. As a result, the plaster stays moist longer, which supports proper hydration and strength development.

What amount of HPMC should be added to lime plaster?

Typical dosage ranges from 0.1% to 0.4% by weight of the dry mix. The exact amount depends on climate, application method, and desired setting time. Always test small batches first.

Does HPMC affect the final strength of lime plaster?

When used correctly, HPMC does not reduce strength. It actually helps achieve more uniform curing. This leads to better adhesion and fewer surface defects like shrinkage cracks.

Is HPMC safe for use in historic or traditional lime plasters?

Yes. HPMC is chemically inert and compatible with traditional lime systems. It does not interfere with carbonation—the natural hardening process of lime. Many conservation projects use it to improve performance without altering appearance.