DIBHAPOXY -225
(for BIO-GAS Plants)

INTRODUCTION:

In bio-gas plants with fixed dome, there has been common draw-back that it’s dome develops hair cracks which are not seen with the naked eye, through which the gas stored leaks out.  The conventional method of repairing is either with applying Oil paint or tar coat over plastering the inner surface has not proved to be result oriented as a film of Oil paint is too thin and Tar does not have good bonding with any cemented surface and even new plaster also develops cracks and peels off due to change in compressive strength between the old and new plaster.

Ultimately, due to large number of failures of Fixed Dome Plants, people lose faith in this particular model and opt for Floating Gas Holder Plant, though it is a well known fact that Fixed dome type plants have various advantages over the other model such as  reducing cost factor, longer life, less maintenance, utilization of space over the Dome etc.

To overcome this burning problem of gas leakage’s from Fixed-Dome Type model, we therefore, for over past decade, have introduced an unique product DIBHAPOXY-225 which has rendered us excellent results and has proved to be an ultimate solution to the said problem.  Our product has very widely been used by Semi government  and even with the Private voluntary organizations basically engrossed with the  constructions of Bio-gas plants.

TECHNICAL DATA OF DIBHAPOXY-225 :

      *  Vehicle Type                       : WATERBASED EPOXY RESIN SYSTEM.

                  Resin                                                            Hardner

• Formulated from Bisphenol-A           Formulated polyamide as curing agent & Epiclorohydrine

•  Ph    :  6                                       Ph     :   8

• White Flowable Liquid.                    Pale yellow semi Liquid.

• In Soluble in water                          Soluble in Water.

• Immiscible to cement.                    Miscible in cement.

*  Visual Appearance                           :   On complete curing.. White  { MATT }

APPLICATION OF COATING : [NEW PLANTS   only    DP-225 ]

From inside, clean the entire dome area upto the joint of digester and dome with the wire brush and wash it with ample of water. Break open the cracks, if any, to the extent of 2-3 mm deep in V shape. Mix the material in the equal proportion as cited above, and stir the same for mim.2-3 minutes. Apply the first coat  on the cleaned surface with the a smooth nylon brush. If the cracks are seen, mix the material along with the gray cement to convert the same to putty formation and then apply within the cracks.  On complete curing of first coat and putty if applied, apply the final coat with the proportion mentioned above.

APPLICATION OF COATING : [ OLD PLANTS   with     DP-250 ]

Remove the old existing layers of dung left over by chipping and clean the surface with plenty of water to original concrete level. If the cracks are seen with naked eyes than shape the same in  V  shape by proper chipping .  And the left over surface should be clean up by wire brush followed with water if required.

To mix the two components of  DP- 250  in the proportion as cited in the leaflet and coat the entire surface with the coverage of apppr.50-60 sq. ft. with the nylon brush of 3-4 inch width. Allow to cure the coating for minimum 3-4 hours at 30`-35`C Temp.

On complete curing of first coat, mix the Grey Cement to DP-250 with the proportion till the complete mix converts to semi-paste form [i.e.putty].  Apply the same with the putty spatula with the coverage of 10-12 sq .ft. with 1.5-2.0mm thickness.

Here the prime coat of  DP- 250 shall give adequate bond to concrete surface and to the putty followed  of DP-250 & Grey Cement shall fill-up the cavity of cracks.

PRECUATION :

Mix only required quantity of the material, which can be utilized within the stipulated pot-life for the period avoid solidification. Wash all the tools and tackles with the water and if required with warm water and detergent.