| PRODUCT INFORMATION NALSTANEÒ SPA M (Elastomeric Pure Acryl ate based Medium Coating System for Sport Surface) 10 June, 2002
Description NALSTANEÒ SPA M system is a pure acrylic copolymer based specially designed for manufacturing of sports surface coating. It exhibits excellent compatibility to cement, and can be used to formulate elastomeric medium layers, can offer high elongation with specification of good water proofing, long weatherability and strong cohesion. Features· Excellent cement compatibility · Excellent water and alkaline resistance · Wide formulating latitude · Outstanding flexibility · Outstanding weatherability Typical Properties · | Polymer Type | ............ | Acrylic Copolymer based | · | Appearance | ............ | Milky Gray Paste | · | Total Solids | ............ | 54.0 – 56.0% | · | Brookfield Viscosity (3#/60rpm/25°C) | ............ | 5500 - 7500 cps | · | pH Value at 25°C | ............ | 8.5 - 9.5 | · | Minimum Film Forming Temp | ............ | 5°C |
PRODUCT SAFETY INFORMATION Read and understand the current Material Safety Data Sheet (MSDS) of this product. STORAGE CONDITION The product should be kept in tightly closed containers, protect from freezing and strong
heat, and it should be used within 12 months whenever possible. The recommended normal
storage temperature is between 10 - 35°C.
Comparative Data on pure film performance NALSTANEÒ SPA M showed comparable or better pure film performance than the commercial acrylic coating “Competitor A” in ASTM test methods. | NalstaneÒ SPA M | Competitor coating A (acrylic based) | Tensile Strength (max.), N/mm2 (based on ASTM D412)* | 0.9 | 0.7 | Elongation at break, % (based on ASTM D412)* | > 140 | > 120 | Water absorption after 24 hours, % | 3.4 | 8 | Minimum filming temperature, °C | <5 | <5 | Low temperature tolerance, °C | -29 | -16 |
* Using ASTM Die C, 1-2mm dry film thickness, crosshead speed at 500mm/min Flexible Cement Membrane Performance Cement powder (commercial) and coating (wet) is mixed in 1 part to 1 part by weight. A 2mm wet thickness film is applied on a plastic sheet using applicator and allowed to cure. After the film is cured, the film is removed from the plastic sheet and cut into rectangular strips (1cm width by 7cm length). The thickness is measured by caliper. The strips are pulled using a tensile machine at a rate of 50 mm/min. The gap between the grips of the tensile machine is 3cm. After curing at room temperature for 3 and 7 days, the testing results reveal the better tensile strength and flexibility of NALSTANEÒ SPA M than competitor: | Tensile Strength, N/mm2 | Elongation at break % | Duration of curing, days | 3 | 7 | 3 | 7 | NALSTANEÒ SPA M | 0.60 | 0.92 | 90 | 92 | Competitor coating A | 0.43 | 0.70 | 75 | 73 |
Effects of Formulation Components on Properties 1. Viscosity: Finer sized filler produced higher viscosity than coarser sized filler. 2. Tensile Strength: The tensile strength can be increased by: a. Increasing the ratio of dry premix to aqueous phase; b. Increasing the concentration of the cement component. 3. Elongation: The elongation can be increased by: a. reducing the ratio of dry premix to aqueous phase; 4. Water Proofing: increasing the amount of NALSTANEÒ SPA M will impart better waterproofing to the membrane. --- END --- |
