Knowde Enhanced TDS
Identification & Functionality
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
- Good sprayability
- Excellent nonsagging properties when filled with granite effect fillers
- High clarity
- Light stabilized
- Good color retention
Applications & Uses
- Applications
- Application Method
- Recommended Applications
STYPOL® 040-4985 and 040-4988 should be mixed prior to use. Use mixing equipment with sufficient horsepower (relative to container size) to achieve thorough circulation from top to bottom and out to the sides of the container. The agitator must be properly sized for the container and must allow for uniform mixing regardless of the liquid level in the container. Mixing once a day for 10 minutes is typically sufficient. Air bubbling should not be used for mixing. It is not effective and only serves as a potential source of water or oil contamination. Do not overmix STYPOL® 040-4985 and 040-4988. Overmixing can break down the resin viscosity increasing the tendency to sag.
The cure rate of polyester resins depends on a number of factors including the product’s age, temperature, catalyst type, catalyst level, and ambient humidity. When used in marble casting applications, the matrix cure rate also depends on filler content and casting thickness, as well as other factors. For these reasons, we recommend that customers check the cure rate in their plant.
STYPOL® 040-4985 and 040-4988 are quality control tested using Arkema Luperox ® DDM-9. United Initiators NOROX® MEKP-9 and NOROX® MEKP-9H, Akzo Nobel CADOX® L-50a and CADOX® D-50 are expected to yield similar performance. Arkema Luperox® DHD-9, United Initiators NOROX® MEKP-925 and NOROX® MEKP-925H, and Pergan HP®-90 may also be used, but gel times will vary.
The catalyst level (based on resin) should not exceed 2.5% or fall below 1.5% for proper cure. A catalyst level of 2.0% at 77°F is considered ideal.This product should not be used when temperature conditions are below 60°F, as curing may be adversely affected.
STYPOL® 040-4985 and 040-4988 are acrylic modified ISO/NPG resins designed for applications using spray granite fillers. They are formulated with a very high thixotropic index for excellent suspension of granite particulates. When properly mixed, catalyzed, sprayed, and cured, STYPOL® 040-4985 and 040-4988 granite filled coatings will give the same finished surface qualities as cast solid surface.Follow recommendations from the granite effect filler supplier when incorporating their filler into STYPOL® 040-4985 and 040-4988.
STYPOL® 040-4985 and 040-4988 resins filled with a granite effect filler can be sprayed behind a high quality clear marble gel coat, such as STYPOL® 040-4917, or they can be sprayed as a solid surface coating to replicate solid surface appearance. STYPOL® 040-4985 and 040-4988 resins filled with granite effect filler should be applied to a total thickness of 30-60 mils to ensure coverage. Gel time should be 8-20 minutes on the part to allow the material to flow while minimizing problems with filler settling. In order to prevent driving the granite effect fillers through the filled mix to the mold surface, spray at the minimum pressure.
The filled mix can be sprayed through a cup gun using number 8 or number 9 tips. Make sure catalyst is well dispersed in the resin. Cup gun pressure should be regulated at about 50 psi. Many marble manufacturers drill out the vacuum relief hole on the metal cap to 1/16-1/8² to reduce vapor lock. The filled mix can also be sprayed through a pressure pot spray system. Generally, an internal mix gun is best to ensure proper catalyst incorporation into the filled system. It is helpful to pre-wet and to purge the system when it will not be used for a long period (such as the end of the day) with STYPOL® 040-4985 and 040-4988 resin without the granite effect filler added. This will significantly reduce problems with line plugging.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Tensile strength | 10000 | psi | ASTM D638 |
| Flexural strength | 18500 | psi | ASTM D790 |
| Tensile Modulus | 4,40,000 | psi | ASTM D638 |
| Flexural modulus | 5,70,000 | psi | ASTM D790 |
| Gel Time 100 g mass at 77°F | 12 | minutes | — |
| Viscosity Brookfield RVF #3 spindle at 20 rpm at 77°F | 2250 | cps | — |
| Thixotropic Index at 77°F | 5 | — | — |
| Castable Time at 77°F | 40 | minutes | — |
| Weight per Gallon at 77°F | 8.8 | lbs | — |
| Specific Gravity at 77°F | 1.05 | — | — |
| Tensile Elongation | 2.9 | % | ASTM D638 |
| Impact | 3.43 | ft.-lb. | ASTM D256 |
| Barcol Hardness, Model #934 | 35 | — | ASTM D2583 |
| Heat Distortion Point at 264 psi | 181/83 | °F (°C) | ASTM D648 |
Storage & Handling
- Handling and Storage
STYPOL® 040-4985 and 040-4988 have a shelf life of 120 days from date of manufacture when stored at 73°F or below in a closed, factory-sealed, opaque container, and out of direct sunlight. The shelf life is cut in half for every 20°F over 73°F.