 Refractories - SUPRA - RL 605  Description
SUPRA-RL 605 is a phenolic Novolac resin solution. It has been specially formulated for refractory applications. It is characterised by a medium viscosity range, high carbon yield, long storage life, room temperature handling and easy processability.
It can be used as a binder at an addition level of 3.0-5% for magnesia carbon bricks, slide gate Refractories, alumina carbon refractories etc. Addition of 10-12% hexamine is necessary for curing. Hexamine is initially mixed to the refractory aggregates to ensure thorough distribution followed by SUPRA-RL 605. In certain cases to improve the compressability and green strength of the bricks, SUPRA-RL 605 can be partially replaced by powder resin.
In the manufacture of mag-carbon bricks, it is available to age the mix for 4-8 hrs. prior to making the bricks, in order to obtain the bricks free from lamination and Surface cracks. Typical PropertiesSpecifications (Refractory Resin) SUPRA-RL-605Product: P.F. Liquid Resin (Refractory)
Appearance | Brown liquid | Solid content @ 150oC – 1 hour | 72%±1% | Viscosity @ 30oC Solution 20% Methanol by Ford Cup No. 4B | 60 Sec – 90 Sec (5500-7500 cps) | Cure Time @ 150oC | 70-90 sec. | PH | 3.5-4.0 | Free Phenol | Less than 2% | Specific Gravity | 1.165-1.20 | Solvent | Glycol | Residual carbon content (%) (on cured resin) | 50 min. | Shelf Life | 6 months in cool and dry place | Packing | 200 kgs. Nett M.S. drums |
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Product: P.F. Resin Powder (Refractory)Appearance | White to Pale Yellow | Melting Point by Capillary | 80-85oC | Cure Time @ 150oC with 10% Hexa by Plate Spatula Method | 70-90 | Hexamine | 12% | Sieve Analysis | 200 Mesh B.S.S. – Nil | Inclined flow at 125oC by ½’’ dia 500 MGS Tablet 600 angle, 5 MTS horizontal 25 Mts. Inclined | 20-30 mm | Shelf Life | 6 months in cool and dry place | Packing | 25 kgs. HDPE liner bags |
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Note: Hexamine catalyst also supplied with hexa content 95% minimum and 200 mesh B.S. | 
