HEMC for Gypsum Application

*Improve the water retention and processability, and improve the adhesion to the substrate.

*Insensitive to the alkalinity of gypsum and can quickly infiltrate in various gypsum products without agglomeration.

*No negative effect on the porosity of the cured gypsum product and ensures the respiratory performance of the gypsum product.

*Good retarding effect and does not affect the growth of gypsum crystal.

*Have proper wet adhesion to ensure the bonding ability of the material to the base surface.

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


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Product Details

HEMC are often used as water-retaining agents in (desulfurized) gypsum mortar. Years of research have shown that,water-retaining agent has a very important influence on the gypsum quality and anti-plastering layer performance of plastering gypsum. Good water retention can ensure that the plastering gypsum is fully hydrated, ensure the necessary strength, and improve the rheological properties of the plastering gypsum.


Structural formula 

Hydroxypropyl Methylcellulose for Gypsum

(n~2)/2 

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


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  


HEMC 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.

HEMC for Gypsum Application

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