HPMC Powder Water-retaining for Gypsum Plaster

Feature:Offers high stability, transparency, and surface activity.

Function:High water retention, Thickening property, Highly stable, Quickly infiltrate in various gypsum products without agglomeration.

Net weight : 25kg/bag

Supply Time: All The Year

To increase the tensile energy of gypsum plaster and different production material


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Product Details

Cellulose water-retaining agent

At present, the most widely used in the market is hydroxypropyl methyl cellulose, followed by methyl cellulose, and then carboxymethyl cellulose. The comprehensive performance of hydroxypropyl methyl cellulose is better than that of methyl cellulose, and the water retention of the two is much higher than that of carboxymethyl cellulose, but the thickening effect and bonding effect are worse than that of carboxymethyl cellulose. In gypsum dry-mixed building materials, the dosage of hydroxypropyl and methyl cellulose is generally 0.1% to 0.3%.


Structural formula 

Hydroxypropyl Methylcellulose for Gypsum

(n~2)/2 

OR=-OH、-OCH3、-[OCH2CH(CH3)]nOH or-[OCH2CH(CH3)]OCH3


Modified products

         Type

Item

 HPMC

 YT7

 YT-7166


Specification of non modified products

              Type

Item

HPMC

PD/PDS

HPMC

PK/PKS

HEMC

EM/EMS




EM40M


PD40M

PK40M

EM60M

Non surface

PD100M

PK100M

EM70M

treatment

PD150M

PK150M

EM100M


PD200M

PK200M

EM150M




EM200M

Gel temperature

58.0~64.0

70.0~90.0

70.0~90.0

pH

5.0~9.0

5.0~8.0

5.0~9.0

Loss on drying %

≤5.0

≤5.0

≤5.0

Burning residue %

≤5.0

≤5.0

≤5.0

Bulk density g/L

330~400

350~420

350~420

Methoxy %

23.0~25.0

19.0~24.0

19.0~24.0

Hydroxypropyl %

8.0~11.0

4.0~12.0

/

Hydroxyethoxy %

/

/

7.0~10.0


Applied to gypsum features

1. improve the water retention and processability, and improve the adhesion to the substrate.

2. it is insensitive to the alkalinity of gypsum and can quickly infiltrate in various gypsum products without agglomeration.

3. it has no negative effect on the porosity of the cured gypsum product and ensures the respiratory performance of the gypsum product.

4. it has good retarding effect and does not affect the growth of gypsum crystal.

5. have proper wet adhesion to ensure the bonding ability of the material to the base surface.

6. greatly improve the construction performance of gypsum products, which are easy to spread and do not stick to the knife.

hydroxypropyl methylcellulose for gypsum  HPMC and Gypsum Products  Gypsum Finishing Plaster  Characteristics of Cellulose


HPMC packaging and storage

Barrel or paper plastic bag lined with polyethylene film inner bag. Net weight of each bag: 25kg.

Protect from sun and rain during storage and transportation.

HPMC packaging and storage


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