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3955 resin - Loctite 3D

Ref.: RS-LOC-3955-HDT280-BLACK-1KG

360.00 €

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Volume discounts

Quantity	Discount	Price
10	10% 10%	324.00 € 324.00 €
15	15% 15%	306.00 € 306.00 €
20	20% 20%	288.00 € 288.00 €

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In stock 2 units available for immediate shipping.
units available for shipping in 4 - 6 days Available for shipment within 4 - 6 days

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Approximate delivery date: Monday 8 September

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The 3955 HDT280 FST resin from the Loctite family of flame retardant photopolymers is a high performance halogen-free flame retardant resin (UL94-V0) with excellent flexural and tensile physical properties, as well as a great surface finish. This resin has successfully passed the vertical burn tests and is fully compatible with aerospace FST standards (AirBus AITM2-0002, AITM2-0007, AITM3-0005). Parts 3D printed with this material exhibit no deformation in thermically harsh environments.

The 3955 HDT280 FST resin is the perfect material for the additive manufacturing of connector and interior parts for the aerospace and rail industries, for example HVAC components, clips and plugs for control systems, electronic housings, etc.

A part 3D printed with the Loctite 3955 HDT280 FST resin

Image 1: A part 3D printed with the Loctite 3955 HDT280 FST resin. Source: Loctite.

The 3955 HDT280 FST resin has been formulated to print optimally on industrial DLP printers. Before printing with this material, the user should read safety and technical information available in the Downloads section. In the Usage Tips section useful resources can be found on printer compatibility, recommended post-processing settings, and proper resin storage.

General information
Manufacturer	Loctite
Material	Photopolymer
Format	1 kg / 5 kg
Technology	DLP/LCD
Wavelength	- nm
Viscosity	(ASTMD7867) @ 65 ºC: 830 cP

Printing properties
Layer height	- µm
Layer exposure time	-
Layer off time	-
Lifting height	- mm
Bottom layer exposure	-
Bottom layer count	-

Mechanical properties
Izod impact strength	- KJ/m²
Charpy impact strength	- KJ/m²
Elongation at break	(ASTM D638) 2.1 ± 0.3 %
Tensile strength	(ASTM D638) 66.7 ± 4.7 MPa
Tensile modulus	(ASTM D638) 3556 ± 194 MPa
Flexural strength	- MPa
Flexural modulus	(ASTM D790) 4643 ± 228 MPa
Surface hardness	(ASTM D2240) Shore 82-84 D

Electrical properties
Volumetric resistivity	(ASTM D257) XY: 2.8 E+17 Ω/cm / Z: 4.3 E+16 Ω/cm
Surface electrical resistivity	(ASTM D257) XY: 1.4 E+17 Ω/cm / Z: 2.3 E+17 Ω/cm

Thermal properties
Softening temperature	- ºC
Flammability classification	(UL94) V0 (@ 3 mm)

Curing, washing, and sintering properties
Washing time	1 min
Curing time	-
Curing temperature	- ºC

Other
HS Code	2916.1
Lifetime (since manufacturing)	- M

To ensure the optimal performance of Loctite 3955 HDT280 FST resin, it is essential to follow a validated workflow. Below are the main stages of the process:

1. Pre-melt (preheating)

The resin requires preheating before being used.
It is recommended to heat the original 1 kg container to 80 °C for 4 hours, or until the material is fully liquefied.
Before pouring the resin into the printer tray, shake the container to homogenize the contents.
Once melted, the resin must be kept at 60 °C to maintain fluidity and should be used within a maximum of 2 weeks.

2. Printing settings

Optimized for industrial DLP printers.
The resin must be printed at a temperature of at least 55 °C.
Recommended parameters for an intensity of 5 mW/cm²:
- Layer thickness: 50 – 100 µm
- Base cure time: 20 – 25 s
- Layer cure time: 2.3 – 5 s

3. Cleaning

After printing, remove the support structures.
Wash the part in LOCTITE 3D Cleaner T at 60 °C, using ultrasonic or manual cleaning, for 30 seconds (1 or 2 repetitions).
Dry with compressed air (30 psi) for 10 – 60 seconds.
Optional: perform a quick rinse in acetone (10 s, do not soak excessively) to remove Cleaner T residues.
Wait 60 minutes at room temperature before post-curing.

4. Post-curing

Final post-curing is essential to achieve the certified mechanical and thermal properties. The specific parameters depend on the equipment used; it is recommended to consult the technical documentation and Loctite validated settings.

Several videos are available on Henkel’s YouTube channel about:

How to work with 3D printing resins:
Video 1: Basics of resin printing. Source: Henkel.
How to store 3D printing resins correctly:
Video 2: How to correctly store resins. Source: Henkel.
How to post-process 3D printed resin parts:
Video 3: Tips for resin post-processing. Source: Henkel.

The material’s technical and safety data sheets are available in the Downloads section. On the manufacturer’s website, users can find printer validation information as well as recommended printing and post-processing settings.