Modified HPMC for Gypsum Plaster

Brif introduction

Hydroxypropyl methyl cellulose (HPMC) is a natural polymer materials as raw materials,through a series of chemical processing and prepared non-ionic cellulose. It contains almost methyl cellulose(MC) of all the performance, your first choice for production of high quality building materials additives.To meet the needs of environmental protection, Our product with high water retention, dispersion, good fineness, good work ability, easy dissolution characteristics.It suitable for dry mortar building, both inside and outside wall putty powder milk (cream), adhesives, caulks, interface agents, coatings, self-leveling agent of new building materials.

You can find more information on our web, so please take a look.

Product properties

1. Water Retention: The water retention will be enhanced, which is helpful with such problems as cement or gypsum construction material drying too fast and poor hardening or cracking due to insufficient hydration.

2. Operationality: It can enhance the plasticity of mortar and improve the coating efficiency in construction projects.

3. Adhesivity: It can make mortar attach to base material better since the plasticity of mortar is enhanced.

4. Slip Resistance: It can prevent slipping problem between mortar and the base material in construction project as a result of its thickening effect.

Physical & Chemical Properties

Item

Specification

MC

HPMC

DN55

DN60

DN65

DN70

DN75

Gel Tempreture (ºC)

50-55

58-64

59-68

68-75

70-90

Methoxyl Content (%)

27.5-31.5

28.0-30.0

17.0-22.0

16.5-20.0

19.0-24.0

Hydroxypropoxyl Content (%)

7.5-12.0

4.0-9.5

6.0-12.0

4.0-12.0

Moisture Content (%)

≤5.0

Ash Content (%)

≤4.0

PH Value

5.0-8.5

Viscosity

spec.

Viscosity Ranges(MPA.S)

spec.

Viscosity Ranges (MPA.S)

5

4-9

8000

6000-9000

15

10-20

10000

9000-12000

25

20-30

15000

12000-18000

50

40-60

20000

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18000-30000

100

80-120

40000

30000-50000

400

300-500

75000

50000-85000

800

600-900

100000

85000-130000

1500

1200-1800

150000

130000-180000

4000

3000-5600

200000

≥180000

a) Packing:

- Inner polyethylene film bag and outer plastic coated triad compound bag

- 25Kg each bag;

b) Storage& Transportation:

-No damage during the transportation.

-Protect from humidity, rain, sunlight, damp and wet.

-Put in dry and ventilated place During storage.

- Remainder must be promptly sealed and packed to prohibit from wet.

WHY US:

We provide the following service to customers:

• Study the properties of competitor's product.
• Help client to find matching grade quickly and precisely.
• Formulation Service to improve performance and control cost, according to each client's specific weather condition, special sand and cement properties, and unique working habit.

We have both Chemical Lab and Application Lab to ensure each order's best satisfaction

• Chemical labs is to allow us to evaluate properties as viscosity, humidity, Ash, pH, content of methyl and hydroxypropyl groups, substitution degree etc.

• Application lab is to allow us to measure open time, water retention, adhesion strength, slip and sag resistance, setting time, workability etc.

FAQ:

Q1. How can we guarantee the products' quality?

1.All materials must be tested refers to key specifications before unload.

2.We will store different material into different warehouse after unload.

3.We keep paper and computer storage records.

Q2: What will be your sample policy?

A: We offer free sample, customer afford the cost of delivery.

Q3: What is your payment terms?

A: T/T 30% in advance and balance before shipment.

Q4. What about the lead time?

A:Sample needs 3-5 days, mass production time needs 3-5 working days for lot order quantity.

Q5. Do you have any MOQ limit for trial order?

A: We have no MOQ, small quantity is available for us.

Q6. Is it OK to print my logo on the bags?

A: Yes. we can accept this clause, please inform us formally and confirm the design firstly before production.


COOPERATION

Hydroxypropyl Methylcellulose (HPMC) is a widely used additive in various industries, including construction. In gypsum plaster, HPMC serves multiple functions, ranging from improving workability to enhancing the performance of the final product.

Overview of Gypsum Plaster:

Gypsum plaster, also known as plaster of Paris, is a widely utilized building material due to its ease of application, versatility, and fire-resistant properties.

It is commonly used for interior wall and ceiling finishes, creating smooth surfaces suitable for painting or wallpapering.

Introduction to Hydroxypropyl Methylcellulose (HPMC):

HPMC is a cellulose ether derived from natural cellulose, primarily wood pulp or cotton.

It is chemically modified to enhance its properties, including water retention, thickening ability, and adhesion.

HPMC is available in various grades, each tailored to specific applications based on viscosity, particle size, and other parameters.

Properties of HPMC Relevant to Gypsum Plaster:

a. Water Retention: HPMC improves the water retention capacity of gypsum plaster, prolonging the hydration process and enhancing workability.

b. Thickening: HPMC acts as a thickener, preventing sedimentation and improving the consistency of the plaster mix.

c. Adhesion: HPMC enhances the adhesion of gypsum plaster to various substrates, ensuring better bonding and reducing the risk of delamination.

d. Air Entrainment: HPMC facilitates air entrainment, leading to improved workability and reduced cracking in the plaster.

Applications of HPMC in Gypsum Plaster:

a. Basecoat and Finish Coat Formulations: HPMC is incorporated into both basecoat and finish coat formulations to improve rheological properties and workability.

b. Crack Filling Compounds: In crack filling compounds, HPMC helps maintain consistency and adhesion, ensuring effective repair of surface imperfections.

c. Skim Coat and Leveling Compounds: HPMC contributes to the smoothness and durability of skim coats and leveling compounds, enhancing surface finish.

d. Decorative Plasters: In decorative plasters, HPMC assists in achieving intricate textures and designs while maintaining structural integrity.

Benefits of Using HPMC in Gypsum Plaster:

a. Improved Workability: HPMC enhances the workability of gypsum plaster, allowing for easier application and reduced labor requirements.

b. Enhanced Durability: The addition of HPMC improves the strength and durability of gypsum plaster, reducing the likelihood of cracking and shrinkage.

c. Consistent Performance: HPMC ensures consistent performance of gypsum plaster across different environmental conditions, such as temperature and humidity variations.

d. Versatility: HPMC enables the formulation of gypsum plaster with a wide range of properties, catering to diverse application requirements.

e. Environmental Friendliness: HPMC is biodegradable and environmentally friendly, aligning with sustainable construction practices.

Challenges and Considerations:

a. Compatibility: Proper selection of HPMC grade and dosage is crucial to ensure compatibility with gypsum plaster and other additives.

b. Quality Control: Stringent quality control measures are essential to maintain batch-to-batch consistency and performance reliability.

c. Storage and Handling: HPMC should be stored in dry conditions and handled with care to prevent contamination or degradation.

Hydroxypropyl Methylcellulose (HPMC) plays a vital role in enhancing the properties and performance of gypsum plaster. Its ability to improve workability, adhesion, and durability makes it indispensable in various applications within the construction industry. Understanding the properties and proper application of HPMC is essential for optimizing the performance of gypsum plaster and ensuring the success of construction projects.

For more information, please visit Hydroxypropyl Methylcellulose (HPMC) For Gypsum Plasters.