INSTRUCTIONS FOR USE
PHENO BOND cement is supplied in two separate parts, PHENO BOND Powder and PHENO BOND Syrup. It must be mixed in the proportions given in the above data table, strictly in accordance with the following Instruction and no other material added.
Mixing Operation – mixing should be carried out very thoroughly and carefully in a clean enameled dish or bowl. Any lumps in the powder must be broken down careful mixing. Mixing is best carried out by adding powder to syrup. Only mix small quantities at a time. Arrange mixing so that mixed mortar is used up quickly and does not remain in bulk for longer than 20 minutes. At temperatures 70F, or above, kept the mixing pan and contents cool by immersion in water.
Working time – Under normal atmosphere condition PHENO BOND mixed mortar can be used up to 20 minutes from mixing. It is however, pointed out that in the setting of PHENO BOND mortar some heat is generated, and if bulk masses of PHENO BOND mortar are allowed to remain under fairly warm conditions, considerable heat can be generated and lead to a flash set. When the conditions are hot and humid during mixing operation , it is advisable to keep the cement mix in a cold water basin so that temperature is kept around 25 deg. C .
To avoid this, it is essential that the mixed mortar is spread in a thin layer on a flat tray. This is important because left in a mass as such, the mortar may heat on, particularly when the room temperatures are above 80F.
Hardening time – this is depending on atmospheric temperature; under normal conditions and mixed mortar is fairly hard in one day, with colder conditions in two days. It is recommended that the mortar is left for eight days before placing under service conditions. While warmth will, of course, accelerate the hardening, it is not normally necessary to heat – treat to obtain chemical resistance to acids, alkalies and solvents. The color of the set, hardened mortar is blackish – grey.
Application for laying tiles and paviors completely in PHENO BOND Mortar – PHENO BOND Mortar may only be applied direct to bitumen (especially sanded bitumen), rubber and synthetic resin surfaces and unglazed stoneware, bricks etc. Concrete cement screed and metal surfaces must first of all receive an isolating layer of bituminious material by applying a good coat of our lacquer to the carefully cleaned and dried surface.
In all cases the surfaces to which PHENO BOND mortar is to be applied must be clean, dry and free from rust. During setting and hardening no water, steam or acid must come into contact with the PHENO BOND mortar.
When tiles or bricks are laid completely in PHENO BOND mortar narrow joints should be used.
Storage – PHENO BOND powder and syrup should be stored under cool and dry conditions.
When working in closed tanks PHENO BOND, ensure adequate ventilation.
GRAPHITE FILED CEMENTS – REPAIRING OF IMPERVIOUS GRAPHITE EQUIPMENTS.
USE : FOR REPAIRS AND JOINTING OF IMPERVIOUS GRAPHITE.
These cements are versatile in repairing impervious Graphite equipment such as graphite exchangers, Dilution coolers, graphite pump parts build – up, and cements for plugging in services.
The cement manufactured is a two-pack system which comes as powder and liquid. These are normally mixed in the ratio of 1:1 in a plastic plate with a small plastic spatula slowly but intimately without generating heat in the system. After a through trowable mix is formed the cement is applied on to the dry clean parts that is to be repaired, with a knife. The parts that are joined should be cleaned with an emery paper and blown with compresses air. Care should be taken not to exceed thickness of cement more than 1/8” in any case. These repaired joints are to be kept under slight pressure infra red ray lamp should be used on the joint for faster curing and higher strength.
Shelf life of both liquid and powder is around 4 months if maintained in a cold room of 150C. Pot life of the cement mix is around 30 minutes. If however atmosphere temperature is higher then mixing can be done in a cold room and jointing done at the spot.
PROPERTIES OF CURED CEMENT:
1. Density : 80 Pounds per cu. Ft.
2. Tensile strength : 1500 Pounds per sq. inch
3. Compressive strength : 7000 Pounds per sq. inch
4. Bond strength : 150 Pounds per sq. inch
5. Water absorption : 0.2 %
6. Max. Temp. of usage : 2000C
The cement may be irritable to skin so rubber or latex gloves should be used. Clean hands with Acetone or tetra chloride before setting of cement on the hand. Wash hands with mild alkaline soap or surf there after.
CHEMICAL RESISTANCE OF IMPERVIOUS CARBON
AND GRAPHITE MATERIALS AND CEMENTS
|1. Sulphuric acid upto 80% conc.
|2. Phosphoric acid 52%
|3. Hydrochloric acid all conc.
|4. HCL plus Benzene all Conc
|5. Sulphuric + HF 20%
|6. Chlorine gas dry or wet.
|7. Caustic soda lye 50%
|9. Pentacholoro phenol
|11. nitric acid 10%
|12. Hydrochloric acid 10% + HF 10%
nitric acid 10% + Sulphuric 10%
|13. Monochloro acetic acid
|14. Chromic acid 10%
|15. Spin bath liquor
|16. Phosphorous chlorides
|17. Ehtyl Amines
|18. Hydroflouric acid 50%
|19. Ammonia gas or liquid 40%
|20. Potassium and sodium carbonates
The above Carbon materials and cements are not suitable for use in aqua regia, caustics above boiling points, and sulphuric above 93% chromic acids above 15% and nitric acid above 10% and combinations of these.
6 months if kept at 150C
For any specific use please contact us for advice.
S – 140 COATING COMPOUND
USE: FOR COATING OF POROUS GRAPHITE PARTS TO MAKE IT
IMPERVIOUS AFTER EQUIPMENT REPAIR
S – 140 Coating compound is a brownish black viscous resin supplied with an accelerator for mixing and coating application normally whenever any impervious graphite equipment becomes permeable in service. This coating application makes graphite parts once again non-porous on the outer surface increasing life material.
PREPARATION OF THE COMPOUND
Around 250 gms of the coating compound covers four to five square mtr of required surface. The job has to be planned as per work area and not more than 250 gms, mixed at one time. Resin about 250 gms is poured into one plastic bowl and 8-12% weight of catalyst dropped slowly drop by drop while mixing with a knife. Occasionally small quantity of acetone may be mixed to decrease its viscosity if required. Now the mix ready for painting. Any ordinary paint brush is sufficient for painting area should be free of dust, moisture or any contaminants.
APPLICATION OF COATING COMPOUND
Pot life of the formed is normally 20 mins at 250C. the paint should be worked into the pores with brush smoothly, and within one to two hours a hard crust is formed with the paint set. Two such coats should be applied minimum before finally curing it with dry air. The finally cured cement becomes very hard and scratch free with any sharp instrument with hand. Any uncured cement can be removed before setting with acetone or carbon tetrachloride.
STORAGE OF COMPOUND
The cement compound should be stored at 150C so that it has a life of 4 months. Any moisture on the surface of the liquid should be decanted before use.
The subject cements are irritants to skin and therefore to be handled with rubber or latex gloves. Remove uncured cement with carbon tetrachloride or acetone from hands.