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QCM INDUSTRIAL |
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EAS-8 ADHESIVE/COATING SYSTEM GRADE 4 -GREY- DESCRIPTION: EAS-8 Grade 4 is a grey, two part epoxy polysulfide rubber adhesive used for sealing and coating concrete walls and floors. It is also designed to bond hardened concrete to hardened concrete (Type I), freshly poured concrete to hardened concrete asphalt (Type II), and for bonding skid resistant materials to hardened concrete. Cured (hard surfaces) may be damp (not wet). This coating has superior resistance to most fuels, solvents and oils. This epoxy system can be used for bonding or sealing concrete, metal and some plastics. (Also for example aluminum, mild steel, polyester, wood.) Class A - For use above 32 F (0 C)
MIX RATIO: 2 PARTS PART A TO 1 PART PART B In all EAS-8 Epoxy Adhesive Systems, Part A has a small amount of white pigment and Part B has a small amount of black pigment to aid the user in preparing a thorough mixture. When a smooth, even grey color is obtained with no black or white streaks, then the epoxy is properly mixed and should be poured immediately. ***SAFETY READ BEFORE USING*** CAUTION - Epoxy resins contain irritants which can affect the skin, eyes, and respiratory system. Persons handling these materials should use appropriate protective clothing, including rubber or plastic gloves. If an epoxy resin should come in contact with the skin, the resin should immediately be removed with a dry cloth or paper towel. The skin area should then be washed thoroughly with soap and water. Solvents should not be used as they carry the irritant into the skin. Cured epoxy resins are innocuous. APPLICATION OF EAS-8 GRADE 4 : A) Prepare the concrete: (see separate brochure). Surfaces should be clean, solid and free from alkalinity (pH of 5 to 7 prox. or aged at least three weeks). EFC-2 can be used on damp (not wet) surfaces and cures well down to 54 deg. F Metals should be cleaned and/or sand blasted to "bright" metal. Full cure at 72 deg. F, is 7 days. EAS-8 can be used at temperatures down to 35 deg. F, but physical properties may take up to 2 weeks to develop. Whether full physical properties have been developed and are adequate is up to the end user to determine. B) Mix only enough material as to be able to use within the pot-life. Mix (2) parts of Part A to (1) part of Part B with a drill motor or paint stirrer until thoroughly mixed. In hot weather it may be necessary to cool both parts prior to mixing. REMEMBER, pot-life is greatly reduced with increased temperature; half as long at 90 deg.F, as at 72 deg. F. Larger mixes also have much shorter pot life. It is advisable to transfer the original part A/part B mix to a second container and then give this a second mix- this ensures proper mixing. CAUTION! - DO NOT SCRAPE SIDES OF ORIGINAL MIX CONTAINER AND USE DIRECTLY ON FLOOR OR WALLS - this is like scraping out pure unmixed epoxy or pure unmixed hardener and can cause uncured areas on the finished surfaces. C) Apply the epoxy as soon as thoroughly mixed (there is more working time when spread out onto the floor or walls - as opposed to leaving in the mix pot , where it will quickly reach it's pot life and kick off -[smoke and boil] ). Spread with notched squeegee (notched to desired depth) on floors or trowel / roll coat on walls. D) A second coat can be applied if necessary when the first coat is hard enough to walk on (probably 24 hrs at 70 deg. F). E) Clean up tools before epoxy is hardened with acetone, MIBK or MEK. PHYSICAL PROPERTIES AND PERFORMANCE DATA: Type/Grade/Class: Grade 4, Class A Minimum Cure Temp: 32 deg. F Pot Life (note1): 25 mins Open Time (note 2): 2.5 hours Mix Ratio (Wt. or Vol.) 2 parts A to 1 part B Viscosity (77 deg. F) Part A: 60,000 cps Brookfield. Part B: 40,000 cps Mixed: 50,000 cps Weight Per Gallon Part A: 9.4 Part B: 9.8 STATE OF CURE vs time at 72 deg. F (note 3) 1 HOUR Soft Gel 2 HRS Firm Gel 4 HRS Firm Gel 8 HRS A-65 Solid 1 DAY D-64 Solid 7 DAYS D-65 Solid ARIZONA SLANT SHEAR TENSILE ( note 4) 1296 psi (7 days) COMPRESSIVE TENSILE ( note 5 ) FALLING BALL IMPACT ( note 6 ) 10 ft-lbs See below for methods, notes (1) through (6). TEST METHODS: 1) A one pound mix (Parts A & B), was used with material at 72 deg. F before testing. 2) Open Time -Kraft paper method: Freshly mixed adhesive was spread approximately 1/16" thick. Then, at regular time intervals, a strip of kraft paper (brown paper bag) was lightly rubbed into the surface of the adhesive and immediately peeled off. If at least 80% of the paper did not have adhesive on it, open-time was considered ended. 3) State of Cure Vs. Time: Mixed material was poured in a casting block 2.5" in diameter by 3/16" thick. Subjective judgements were made until product was hard enough to measure with a Shore A or Shore D durometer. 4) Arizona Slant Shear Tensile: Tests were run by an independent test lab in Seattle in accordance with the Washington State Department of Highways method 405-A. This correlates with the methods of ANSI/ASTM C 881-78. 5) Compressive Shear Strength: Same as item 4, except method 404-A. 6) Falling Ball Impact Strength: A 3/16" thick by 2.5" diameter casting was cured 7 days at 72 F. Then a 1# round steel ball was dropped from increasing heights until either the sample cracked or the height of the falling ball direction tube was exceeded. STORAGE TEMPERATURE: DO NOT STORE PRODUCT BELOW 50 F OR CRYSTALLIZATION MAY OCCUR. In such case, call for technical assistance 1-800-321-0170. SHELF LIFE: Guaranteed twelve (12) months when stored in sealed containers at temperatures between 50-90 F. Part A subject to crystallization when stored in intermittent cool temperatures for prolonged periods. e-mail roy@qcminds.com
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