Mar Resistant Plastic
Description
Mar-Con® 551 Acrylic – Forming Grade is an abrasion resistant plastic sheet product designed for a variety of high performance end uses in which the sheet will be heat formed or bent into soft radius shapes. It is a premium quality acrylic sheet, coated with SciCron’s Mar-Con 551 advanced technology cross linked coating. This coating has excellent resistance to a wide variety of chemicals and solvents and is more abrasion resistant than the acrylic plastic substrate. This combination of properties provides enhanced resistance to hazing, marring, abrasion, and scratching of the sheet surfaces from cleaning, handling, and defacement efforts. Mar-Con® 551 Acrylic – Forming Grade also exhibits excellent optical properties and fabrication characteristics. This product can be used in many more applications than would be practical for an uncoated acrylic sheet.
Applications
Mar-Con® 551 Acrylic – Forming Grade is designed to be used where there is concern about scratching and marring of the surfaces of the plastic sheet from handling and other moderate abuse. It is also designed for applications requiring improved splash and wipe down resistance to many common chemicals and solvents which would normally damage the acrylic sheet surfaces. The Forming Grade Mar-Con® 551 coated surface helps prevent such damage from short-term exposures to these materials. Typical applications for Mar-Con® 551 Acrylic – Forming Grade include formed fabricated items, such as; equipment covers, display components, safety shields, and curved machine guards.
Fabrication
Mar-Con® 551 Acrylic – Forming Grade is easily fabricated into a variety of flat and bent surface configurations using the same equipment employed with uncoated acrylic sheet products. The product is designed to accommodate drape forming and heat bending, however, care must be taken to avoid applying too much heat to prevent damage to the mar resistant coating. Soft radii shapes and bends can be achieved which are smooth, clear, and uniform, if recommended forming techniques are employed. Some distortion and loss of mar resistance in a bend area is normal. On tight bends, particularly in thicker materials, there may be some very fine haze lines in the bend area. When solvent welding, it is necessary to remove the Mar-Con surface mechanically to achieve a good bond. Note: This product is not designed for vacuum formed or drawn configurations. For more information, refer to SciCron Technologies Technical Information Bulletin No.MP-02.
Features and Benefits
- Flexible, abrasion resistant, durable surface
The Forming Grade Mar-Con 551 surface, more abrasion resistant than the base plastic, reduces risk of damage to the sheet surfaces from frequent cleaning and handling. - Superior chemical and solvent resistance
Reduces risk of solvent or chemical damage to the sheet surfaces. - Excellent optical properties
High clarity, high gloss coating maintains optimum light transmission without distortion. - Advanced technology, uniform surface treatment
Provides enhanced mar and chemical resistance without changing the appearance of the acrylic surfaces. - Graffiti resistance
Easy to clean hydrophobic surface. - Superior fabrication and bending characteristics
Results in optimum workability and heat forming during part fabrication.
Cleaning
The Forming Grade Mar-Con 551 coated surface can be cleaned with a variety of common cleaners (see below for specific recommendations). Care should be taken to avoid the use of any cleaner or cleaning solution which contains an abrasive. In addition, all wipes, sponges and drying towels should be clean and free of any grit which could damage the surface.
Availability
Mar-Con® 551 Acrylic – Forming Grade, in cell cast type, is available in clear and a variety of standard transparent colors. White translucent and colored opaque grades are also available. Continuously cast, extruded types and impact modified types are available in some sizes and thicknesses upon request.
Note: Cell cast is a premium acrylic plastic but it has a wider thickness variation than other acrylic types. Therefore, continuously cast or extruded material should be specified if a narrow thickness tolerance range is needed.
Standard Dimensions (Nominal)
Thickness: 3mm (1/8″), 4.5mm (3/16″), 6mm (1/4″), 9mm (3/8″), 12mm (1/2″) – Note: 9mm and 12mm – cell cast only.
Standard Sheet Size: 48″ x 96″
Other sizes and thicknesses, including oversize sheets, available upon request.
Made in USA
Typical Physical Properties (Typical but not guaranteed values for 0.25 inch cell cast material)
| Property | Test Method | Units | Mar-Con Acrylic Forming Grade |
| Physical Specific Gravity Taber Abrasion1 – Change in Haze Weighted Steel Wool Rub Resistance2 | ASTM D792 ASTM D1044 Internal | — % Visual Scratches | 1.19 Less than 8 Light Scratches |
| Mechanical Tensile Strength Ultimate Elongation Tensile Modulus Flexural Strength Flexural Modulus Compressive Strength Izod Impact Strength (milled notch) | ASTM D638 ASTM D638 ASTM D638 ASTM D790 ASTM D790 ASTM D695 ASTM D256 | psi % psi psi psi psi ft-lb/inch of notch | 10,000 4.2 400,000 16,500 475,000 18,000 0.4 |
| Thermal Deflection Temperature (264 psi load) Vicat Softening Point Maximum Continuous Service Temperature Coefficient of Thermal Expansion Coefficient of Thermal Conductivity | ASTM D648 ASTM D1525 — ASTM D696 Cenco-Fitch | °F °F °F in/in/°F BTU•in/hr•ft2•°F | 210 239 180 3.5 x 10-5 1.3 |
| Flammability Horizontal Burn (Flame Spread) UL 94 Rating of the Uncoated Substrate | ASTM D635 UL 94 | in/min UL Classification | 1.1 HB |
| Optical 3mm Transparent Clear Transmittance – Total Haze | ASTM D1003 ASTM D1003 | % % | 92 Less than 1.0 |
2. Test conditions – 14 strokes of #0000 steel wool under a 2 pound (908 gram) rounded point load – Damage for the same exposure on uncoated cell cast acrylic – very heavy scratches
Chemical Resistance ASTM D-1308
Samples immersed in listed chemicals and then examined for visible attack at 15 minutes, 1 hour, and 24 hours
| Chemical | Time for Visible Attack |
| Acetone | < 1 hour |
| Methyl Alcohol | > 24 hours |
| Isopropyl Alcohol | > 24 hours |
| Gasoline | > 24 hours |
| Kerosene | > 24 hours |
| Toluene | < 1 hour |
| Methylene Chloride | > 1 hour* |
| Sodium Hydroxide (10%) | > 24 hours |
| Hydrochloric Acid (10%) | > 24 hours |
| Sulfuric Acid (10%) | > 24 hours |
| Nitric Acid (10%) | > 24 hours |
Cleaning and Graffiti Removal
Solvents and Cleaning Liquids Found Effective Under Laboratory Conditions
Aqueous solutions of the following can be applied carefully with a soft cloth or sponge for ordinary dirt and grime.
Joy® Windex®
Formula 409® Sparkle™
Rinse with clean water before drying with a chamois or cellulose sponge.
Never use an abrasive cleaner or scouring pad.
The following solvents can be used to remove graffiti and other stubborn stains.
Isopropyl Alcohol Methanol
Naphtha (VM&P Grade) Kerosene
Butyl Cellosolve (for paints, inks, lipstick, etc.)
Always remove residual solvent with an aqueous cleaner and a final rinse with clean water.
Precautions:
- Acrylic plastic is a combustible thermoplastic. Avoid exposure to flame and excessive heat. Observe fire precautions appropriate for comparable forms of wood and paper.
- For building applications, comply with applicable code regulations.
MCACFG-3 5/17
The information and statements contained herein are believed to be accurate, however, users should perform their own testing and verification to determine the durability, applicability and suitability of the products for their own purposes. NOTHING CONTAINED HEREIN SHALL BE CONSTRUED AS A REPRESENTATION OR WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. IMPLIED WARRANTIES OF MERCHANABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY EXCLUDED. All sales are subject to SciCron’s standard terms and conditions of sale.