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QCM INDUSTRIAL |
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EAS-1 EPOXY ADHESIVE SYSTEM/
FOOD GRADE COATING MIX RATIO: TYPICALLY: One (1) part Part A Epoxy to one (1) part Part B Curing Agent by weight or volume. (1:1) This product is very forgiving on mix ratios; and in fact the mix ratio can be varied to give different properties. For example, maximum tensile strength is obtained at three parts (3) part A to one part (1) Part B, but a high flexural bond is obtained at one (1) part Part A to two (2) parts Part B. VISCOSITY GRADES: Part A High Viscosity (HV) 12,000-16,000 cps Brookfield Part A Med. Viscosity (MV) 7,000-10,000 cps Brookfield Part A Low Viscosity (LV) 600 - 800 cps Brookfield Part B All Grades 10,000-14,000 cps Brookfield FDA STATUS: Cured coatings made with EAS-1 Part A and B of the HV grade (high viscosity) may be safely used as food-contact surfaces and conform to listings in Section 175.300, Title 21 of the Code of Federal Regulations - when properly mixed, cured and applied. The cured coatings may be applied over a metal substrate or any suitable substrate as a continuous film that serves as a functional barrier between the food and the substrate. Cured coatings made with EAS-1 Part A and B LV grade (low viscosity) have limited allowance under the same CFR regulations, namely they are for use only in coatings that are intended for contact with dry bulk foods at room temperature. COLOR: Clear in thin films to amber in very heavy films. CONSISTENCY: Thin liquid to molasses. See viscosity grades. POT LIFE: (1 pound batch) Approximately 90 minutes. SHELF LIFE: Guaranteed six (6) months when stored in sealed containers at temperatures between 50 - 90 F. Part A may be subject to crystallization when stored in intermittent cool temperatures for prolonged periods. MAXIMUM HEAT DISTORTION & CHEMICAL RESISTANCE: is attained using two parts Part A to one part Part B. However, for greater flexural strength, elongation, and specific adhesion a one to one mix ratio is recommended. For ambient and low temperature applications and maximum flexural strength (tensile strength drops though), mix 1 part of Part A to 1.5 to 2 parts of Part B. One to one is most commonly used. CURE CHARACTERISTICS: (Based on a 40 mil. film) & (1) to (1) Mix Firm Set @ 70 deg. F 8-12 hours Hard Set @ 70 deg. F 24 hours Full Cure @ 70 deg. F 7 days Note that for flush fitting adhesive bonding (very smooth surfaces), a thinner bond (typically 5 to 10 thousandths of an inch) can be achieved and that this cure time will be somewhat longer yet. Higher temperatures will greatly accelerate the cure time. BOND STRENGTH: Metal to metal Lap Shear Tensile-exceeds 2000 psi ( 1 part Part A to 1 part Part B) RECOMMENDED CURE TEMPERATURE RANGE: 60 deg.F to 250 deg.F * RECOMMENDED BOND TEMPERATURE RANGE: -20 deg. F to 160 deg. F. SHIPPING WEIGHTS: Part A Part B 1 Gallon Pail 9 lbs. 8 lbs. 5 Gallon Pail 45 lbs. 40 lbs. 55 Gallon Drum 450 lbs. 400 lbs. Refer to EAS-20 Thixotropic Version for vertical work or gap-filling requirements. This has a slightly faster cure time. SAFETY AND HANDLING: See MSDS on EAS-1 Parts A & B. * Note: For approx. every 18 deg. F, increase in temperature, cure speed is cut in half. e-mail to roy@qcminds.com |
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