Knowde Enhanced TDS
Identification & Functionality
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Applications
- Cure Method
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
Properties
- Color
- Mechanical Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Tensile Stress at Break | 3 - 4.6 | MPa | ASTM D638 |
| Young’s Modulus | 3.8 - 5.4 | MPa | ASTM D638 |
| Elongation at Failure | 155.3 - 160.7 | % | ASTM D638 |
| Tear Strength | 10.47 - 13.07 | kN/m | ASTM D624 |
| Energy Return | 39 | % | Internal |
| Value | Units | Test Method / Conditions | |
| Shore Hardness (0s) | 55 | Shore A | ASTM D2240 |
| Solid Density (Green) | 1.43 | g/cm³ | ASTM D792 |
| Solid Density (Cured) | 1.04 | g/cm³ | ASTM D792 |
| Volumetric Shrinkage | 2.26 | g/cm³ | Internal |
| Water Absorption (24hr) | 2 - 2.2 | % | ASTM D570 |
| Water Absorption (72hr) | 4.4 - 4.6 | % | ASTM D570 |
| Water Absorption (168hr) | 6.4 - 6.6 | % | ASTM D570 |
| Viscosity (25°C) | 1320 | cP | ASTM D7867 |
| Liquid Density | 1.02 | g/cm³ | ASTM D1475 |
| Shore Hardness (5s) | 44 | Shore A | ASTM D2240 |
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
Technical Details & Test Data
- Validated Workflow
Exposure Parameters NexaX default Primary Wash 1min, xClean detergent in xWash station Secondary Wash 2min, Isopropyl Alcohol Dry 30min air dry Inhibition Spray with Mold Release Cure 60min total cure time in xCure. Cure submersed in water using borosilicate glass container. Place container on floor of xCure. Flip part half-way through to ensure uniform exposure. Inhibitor Rinse Dip in IPA to remove mold release, drip dry - Limitations
The mechanical and physical properties of Nexa3D xFLEX475 are highly dependent on the printing parameters used as well as part geometry. It is common that validated workflows need to be adjusted for unusually thick or thin geometries. Even if the properties observed in your lab don’t match the TDS, it does not signify that something is “wrong,”. Parts may be tacky prior to post-cure.
Post curing of Nexa3D xFLEX475 to reach stated property targets must be cured in water or an alternative inert medium. Deionized water is recommended. Coating parts with a spray-on mold release agent such as LOCTITE® Frekote 770-NC or Smooth-On Universal Mold Release prior to post curing will reduce the surface tack of a final part. After curing, the mold release can be rinsed off with water or Isopropanol.
Printing with Nexa3D xFLEX475 requires detailed attention to interactions between the material and the hardware in use. Mechanical process settings must be optimized for each printer based on the hardware and software capabilities. Due to the low durometer and high elasticity of the material, printed parts may sway during tray release, Z-axis movement, and upon re-entering the resin vat. For this reason, the user must consider part orientation and support design carefully.
Typically larger supports and contacts are required and build height to width ratio should be kept near 1:1. Use wait time of 3-5 seconds to allow part and resin to settle. Parts are too soft to removing support nubs by sanding or other abrasive methods. Cutting supports with a scalpel or ultrasonic knife will leave a cleaner surface than tearing off or cutting with snips.