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Flexible BASF Ultracur3D

BASF

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Flexible resins for functional prototypes that require flexibility and durability.

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Despite the advantages of resin printing, especially in terms of resolution and surface finish, its implementation in the industrial sector has always lagged behind other technologies such as FDM or SLS. This is due to the poor mechanical properties originally presented by the available acrylate-based resins.

However, in recent years this has been changing with the appearance of new engineering resins developed to provide parts with excellent mechanical and thermal properties. Today we can find resins optimised to cover some of the most demanding applications in the industrial sector, such as new flexible resins, resins with high wear resistance or resins with high impact resistance.

In order to cover the most demanding needs of the industrial sector, the prestigious chemical multinational BASF has developed a line of light-curable resins known as Ultracur3D, compatible with the main 3D resin printing technologies: SLA, DLP and LED-LCD that use wavelengths of 385 nm or 405 nm.

Unlike most 3D printing resins that are composed of acrylate oligomers, BASF's Ultracur3D resins are based on urethane-acrylates, which means they are more flexible and less fragile.

Within the Ultracur3D range there are four types of resin:

  • Ultracur3D FL: Flexible resins
  • Ultracur3D EL: Elastic Resins
  • Ultracur3D ST: Resins with high impact resistance
  • Ultracur3D RG: Rigid resins with excellent mechanical properties

Ultracur3D resins FL60 and FL300 belong to BASF's range of flexible resins. These are resins with exceptional flexibility, which is unusual for 3D printing resins, as well as high wear resistance. While FL60 resin has a breaking strength of 84%, FL300 resin has a breaking strength of up to 306%.

BASF FL60 sample

Image 1. Piece printed with Ultracur3D FL60. Source: forward-am.com

One of the main advantages of FL60 resin is its low viscosity of only 450 mPas at room temperature. This allows the use of lower peel heights, reducing printing time, as well as minimizing the possibility of bubbles appearing that can cause defects in the parts.

Another distinctive feature of BASF's flexible resins is their low hardness. While Ultracur3D FL60 has a hardness of 73 Shore A, the value for FL300 is reduced to only 37 Shore A.

These are perfect resins for the production of functional prototypes of flexible components, shoe applications and sports or upholstery elements

Like all the resins in BASF's Ultracur3D range, the flexible resins offer impeccable print quality as well as an outstanding surface finish. This, together with their excellent price/performance ratio and balanced mechanical properties, makes them ideal not only for the production of prototypes but also for functional components and the final product.

Ultracur3D FL60 and Ultracur3D FL300 are available in translucent colour and in 1 kg format. They are also available on request in 5 kg and 10 kg formats.

BASF's Ultracur3D flexible resins are some of the most advanced technical resins available for LED-LCD technology.

Elongation at break (%) 84
Tensile strength (MPa) 4
Surface hardness 3
Flexibility Flexibility
Abrasion resistance Abrasion resistance
Vibration resistance Vibration resistance
Translucent Translucent

FL60 Datasheet

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FL300 Datasheet

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Compatibil. Ultracur resins

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FL 60 Safety Datasheet ES

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FL 300 Safety Datasheet ES

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BASF's Ultracur3D resins are highly sensitive to light and should therefore always be stored in their closed containers and away from light.

Before starting a print, the resin should be shaken well and, if possible, vacuumed to remove any bubbles that may have formed.

Once printed, the pieces should be cleaned with isopropyl alcohol. To do this it is advisable to immerse the pieces in a container with isopropyl alcohol and place this container in an ultrasonic cleaner for 4 minutes. It is recommended not to immerse the piece for long periods of time to avoid deformation and softening.

After cleaning, the pieces should be dried for 30 minutes at 40 ºC. Once dry, parts printed with BASF Ultracur3D resins should be cured at room temperature to obtain optimum properties. Curing conditions will depend on the characteristics of the printer used and the curing equipment.

All customers who have purchased any resin from the BASF Ultracur3D range can request the appropriate user guide. This can be done using the contact form by selecting "Technical Support" in the subject line and the order number of the resin.

General Information
Manufacturer BASF
Technology LED-LCD, DLP, SLA
Material Urethane-acrylate oligomers
Wavelength 385 nm, 405 nm
Format 1 kg (FL60 / FL300)
5 kg (FL300)
10 kg (FL60)
Color Translucid
General properties
Viscosity (-30 ºC) FL60: 450 mPas
FL300: 890 mPas
Viscosity (50 ºC) FL60: 180 mPas
FL300: 408 mPas
Density (solid) -
Density (liquid) -
Mechanical properties
Young's Module   -
Tensile strength (ASTM D412C) FL60: 4 MPa
FL300: 4.48 MPa
Elongation at break (ASTM D412C) FL60: 84 %
FL300: 306 %
Bending modulus  -
Flexural strength at 5% deformation  -
Impact resistance at -30 ºC  -
Impact resistance at 23 ºC  -
Impact resistance at 23 ºC   -
Hardness (Shore A, ASTM D2240) FL60: 73
FL300: 37
Wear resistance (ASTM D624) FL60: 13 kN/m
FL300: 15 kN/m
Resilience (ASTM D1054) FL60: 16 %
FL300: 12 %
Comprehension at 23 ºC, 72H (ASTM D395 -B) FL60: -
FL300: 25 %
Thermal Properties
HDT at 0.45 MPa  -
HDT at 1.82 MPa  -
Flammability  -
Others
Lifetime  12 months
HSCODE 2916.1

* The typical values detailed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We recommend that you confirm the results and final properties with your own tests. For further information, please refer to the product data sheet.

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