3D-POWDER CF4 WD Bio, Water Debindable Bio Eco Powder Binder with relatively high melt viscosity for Cold Fusion CF SLS printing of Metal, Ceramic & exotic powders

• universal water soluble debindable Eco safe biocompatible Powder Binder with thermal degradation (<450ºC)  for Selective Laser Sintering SLS printing of any (your chosen) Ceramic, Metal, Polymer, and exotic powder by Cold Metal Fusion CMF , Cold Ceramic Fusion CCF & Cold Polymer Fusion CPF
• safe biocompatible powder for eco friendly SLS printing, debinding and sintering of ceramics, metals, polymers, and exotic powders
• melting temperature: <55-60ºC
• relatively high melt viscosity in comparison with other 3D-POWDER CF grades for reduced flow if or when over heated
• fast water solubility for cold water debinding at 60-100ºC (faster in boiling water)
• thermal degradation <450ºC for optimum thermal debinding
• easy physical dry powder mixing and wetting with ceramics, metals, polymers and exotic powders with low cost dry powder mixing equipment
• excellent adhesion, uniformity and stability (without gravitational separation) after mixing with micron and submicron ceramics, metals, and exotic powders
• ceramic, metal, and exotic powder additions can be up to 60% volume concentrations
• printable by most plastic / polymer powder SLS printers
• soluble in water for "cold" water debinding at 60-100ºC  (faster in boiling water) and sintering without imperfections nor cracking
• promotes controlled and reproducible process shrinkage which depends on final added % powder ratio
• minimum expansion coefficient to prevent micro-fractures
  
• average particle size <250 microns
• very high resolution up to 100 microns of final products (depending on the particle size of the chosen ceramic, metal, polymer, or exotic powder)
  
• paraben free (parabens can disrupt hormones in the body and harm fertility and reproductive organs, affect birth outcomes, and increase the risk of cancer)
  

Recommended mixing of 3D-POWDER CF4 WD Bio with ceramics, metals, and exotic powders

Mix the following powders in a powder mixer (or similar) at room temperature to ensure full wetting and mixing:

• 20 % by weight of 3D-POWDER CF4 WD Bio*
• 10% by weight of your chosen SLS powder* (typically Nylon 12 powder since it is the most used polymer powder in most plastic/polymer SLS printers) 
• 70% by weight of your chosen ceramic, metal, polymer, or exotic powder or fiber,

*Note: the % can be increased or decreased depending on the specifications of the printing settings and the chosen ceramic, metal, or exotic powder. After ordering 3Dresyns can supply upon request the Instructions for calculating the optimum % ratio by weight. Once 3D-POWDER CF4 WD Bio and your chosen SLS powder (typically Nylon 12) are fully integrated with your chosen ceramic, metal, polymer, or any exotic powder, the powder mix is ready for SLS printing.

Recommended plastic or polymer powder SLS printers: SLS printer compatibility, any open mode plastic/ polymer powder SLS printer can be used

Recommended printing, debinding and sintering process:

1. use the std printing parameters of your chosen polymer powder (typically Nylon 12) but reduce bed temperature to 40ºC.  If over-melting occurs reduce Energy Dosage (laser power and/or scan speed) and/or slightly decrease bed temperature
   
2. use water or air jetting to clean the prints
3. cold debinding at 60-100ºC  (faster in boiling water) in water for x hours (x depends on print size)
4. thermal debinding:
1. Insert flask in the preheated oven at 65ºC
2. Ramp 1-2ºC/ minute up to 250ºC
3. Hold at 250ºC for 60 minutes
4. Ramp 1-2ºC/ minute up to 450ºC
5. Hold at 450ºC for 30 minutes
6. Ramp 2-5ºC/ minute up to sintering temperature
7. Hold at sintering temperature for 180 minutes
8. Ramp -2ºC/ minute down to 640ºC