| HS Code | 711478 |
| Productname | 3D Systems VisiJet RBK-EBK-D55 Multi-Material Composite |
| Materialtype | Multi-Material Composite |
| Composition | VisiJet CR-BK + VisiJet CE-BK |
| Color | Black |
| Hardness | 55 Shore D |
| Tensilestrength | 14 MPa |
| Tensilemodulus | 480 MPa |
| Elongationatbreak | 35% |
| Flexuralstrength | 20 MPa |
| Flexuralmodulus | 450 MPa |
| Izodimpactnotched | 80 J/m |
| Heatdeflectiontemperature | 45 °C |
| Density | 1.12 g/cm³ |
| Waterabsorption | 0.4% |
| Printingtechnology | MultiJet Printing (MJP) |
| Compatibleprinter | 3D Systems ProJet 5500X |
As an accredited 3D Systems VisiJet RBK-EBK-D55 Multi-Material Composites (VisiJet CR-BK + VisiJet CE-BK) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | |
| Shipping | |
| Storage |
Where rigid snap-fit towers must survive repeated insertion force in a sealed handheld diagnostic reader, the same MultiJet Printing build can generate the CR-BK load-bearing housing and the CE-BK sealing lip as a continuous solid without die-cut gasket assembly. The downstream fabrication ratio is constrained to 80 vol% CR-BK and 20 vol% CE-BK at the housing level, with 0 wt% external diluent, photoinitiator, or adhesion promoter added; both materials are jetted from their as-supplied cartridges, and the D55 transition band is machine-rastered at the interface rather than hand-mixed. For ingress testing against dust and low-pressure water jets, prototype housings are validated under IEC 60529 IP5X and IPX2 conditions, while tensile anisotropy at the snap-fit root is measured with ASTM D638-14 coupons cut at 0° and 90° to the jetting direction. The production sequence uses a MultiJet Printing platform with independently heated reservoirs and piezoelectric inkjet printheads for CR-BK and CE-BK, builds the sealing lip at 32 µm layer resolution, then removes wax support in a 65–70°C oil or wax bath followed by ultrasonic rinsing in deionized water and mild detergent; exhaust vents and snap-fit recesses must be oriented downward to avoid support residue. Finished parts are short-run handheld reader enclosures and IP-sealed battery compartments where the elastomeric CE-BK seal is printed at 1.5–2.5 mm minimum thickness. A process control limit applies to post-treatment: aqueous cleaning above 70°C should be avoided because CE-BK compression set can increase and change seal mating force; published data for long-term detergent compatibility is limited and should be verified by immersion screening before production runs.
Automotive climate control assemblies require a rigid CR-BK hub, a soft CE-BK grip skin, and a living hinge that must survive repeated actuation without tearing at the junction. The part-level material assignment is 85 vol% CR-BK and 15 vol% CE-BK; the CE-BK overmould skin is held to 1.5–2.0 mm thickness around knobs, and the living hinge is printed with a CR-BK core not below 1.0 mm in designs targeting 10,000 flex cycles, because thinner cores should not be released without z-axis tear propagation testing at the CR-BK/CE-BK interface. Compliance screening for automotive use includes flame spread classification under ISO 3795 and tensile/elongation monitoring with ASTM D412-16 for CE-BK and ASTM D638-14 for CR-BK; long-term fluid and heat resistance is not assumed and must be evaluated using ISO 1817 immersion exposures for any customer-specific hand lotion, sunscreen, or interior cleaner. The downstream production process uses MultiJet Printing with both part cartridges heated separately, with the hinge line oriented along the X axis to avoid layer-normal stress concentration; wax support is removed in a 60°C bath, and ultrasonic rinsing follows to clear the support from vent grooves and snap features. Terminal part types are instrument panel switch clusters, HVAC control knobs, and vent seal prototypes used for form, fit, and functional testing before injection tooling release. The operational boundary is thermal aging: exposure above 85°C combined with continuous compressive strain can reduce CE-BK recovery and is a known cause of knob detent loosening in solar chamber validation, though published data for this specific CR-BK/CE-BK configuration remains limited.
In benchtop diagnostic instruments where polyurethane gaskets are usually bonded in a separate station, fluid-resistant sealing can be produced during the same MJP build as the CR-BK housing, eliminating a potential adhesive failure mode at the interface. The build composition for this application is 75 vol% CR-BK housing substrate and 25 vol% CE-BK seal bead, with no supplementary room-temperature vulcanization silicone added; the seal bead is printed at 3.0 mm width and 1.5 mm height above the mating plane to achieve sufficient compression without excessive fastening torque. For diagnostic equipment development, the relevant quality-system anchor is ISO 13485:2016 with design controls under FDA 21 CFR Part 820.30; material-level biocompatibility is evaluated by ISO 10993-5:2009 cytotoxicity screening only, and no claim of implant-grade biocompatibility should be inferred. The production sequence runs at 16 µm layer thickness on sealing surfaces to reduce stair-step leakage, followed by support removal at 65°C and ultrasonic rinsing that must not exceed 40 kHz power settings; flat sealing faces are printed face-down on support and then inspected with a coordinate measuring machine for planarity deviation below 0.15 mm. Terminal product types are IVD analyzer front bezels, reagent drawer seals, and point-of-care cartridge docking interfaces where the CR-BK frame carries the CE-BK gasket. A steam autoclave at 134°C is not recommended because CE-BK recovery after thermal cycling is not documented; chemical disinfection with 70% isopropanol or quaternary ammonium wipes remains the current process boundary, with repeated wipe resistance tested per written validation protocol.
Robotic gripper inserts built with CR-BK structural bases and CE-BK contact pads exhibit a process conflict between Shore hardness retention and compression set when pad thickness and static preload exceed design limits. The volume distribution is 88 vol% CR-BK base and 12 vol% CE-BK pad, with pad thickness controlled between 2.0 mm and 5.0 mm; pads thinner than 2.0 mm show acceptable compression set but poor part conformity, while pads above 5.0 mm can accumulate non-recoverable strain under sustained clamping force. Compliance verification for robotic end-of-arm tooling uses ASTM D395-18 compression set at 23°C and 70°C, ASTM D2240-05 durometer hardness, and ISO 10218-1:2011 requirements for gripper-related safety validation where collaborative operation is intended. In production, the gripper insert is printed with the CE-BK pads face-up to prevent support entrapment on the contact surface; CR-BK mounting bosses are printed in the same build with 6.0 mm minimum diameter and metal-threaded inserts installed after printing. No release agent or adhesion promoter is used at the CR-BK/CE-BK interface; instead, the D55 transition band and mechanical dovetail anchors are designed at 60–90° interface angles to resist shear. Terminal components are soft-jaw inserts for automated assembly lines, dunnage-free tote handling end-effectors, and sheet-metal handling pads. The observed batch-to-batch variance in CE-BK durometer is managed by printing a 6.0 mm compression test button on each build tray and rejecting any run where the button deviates by more than 3 Shore A from the batch control value; published multi-lot capability data for this specific D55 configuration is limited and should be generated at the customer facility.
Unmanned aerial vehicle camera gimbals require vibration isolators that remain dynamically compliant at the vibration amplitude range where rigid and elastomeric behavior cross over. The build composition is 85 vol% CR-BK rigid shell and 15 vol% CE-BK isolator volume, with the isolator elements occupying 12–18 vol% of the total part and designed as annular grommets or spoked cushions between the camera mounting plate and the airframe rail. Qualification under RTCA DO-160G Section 7 covers random vibration, while MIL-STD-810H Method 514.8 can be used as an alternate screening if the specified power spectral density exceeds 0.5 g root-mean-square in the 20–2000 Hz band; the CE-BK dynamic displacement must be checked by laser vibrometer because accelerometer mass can suppress the actual isolator response. Processing uses MultiJet Printing with the isolator cavities oriented to drain wax support completely; after 60°C support removal, isopropyl alcohol ultrasonic rinsing is limited to 10 min to prevent surface microcracking of thin CE-BK membranes. The terminal parts are gimbal isolation mounts and avionics tray corner isolators produced for flight test or camera integration trials, not for continuous production without additional environmental aging data. A known operational boundary is low-temperature stiffening: CE-BK may exhibit reduced dynamic displacement below 0°C, and the transition must be mapped with dynamic mechanical analysis before cold-weather flight tests. Published data for this specific configuration under RTCA DO-160G Section 7 is limited; component-level qualification data should be generated at the intended gimbal payload mass rather than extrapolated from material coupons.
For benchtop pneumatic manifolds relying on rapid diaphragm cycling against diluted buffers or lab solvents, the monolithic production of a CR-BK fluid layer and a CE-BK diaphragm avoids adhesive joints that fail under cyclic actuation and differential swelling. The composition is 90 vol% CR-BK channel body and 10 vol% CE-BK diaphragm, with the diaphragm thickness constrained to 0.35–0.50 mm; below 0.35 mm pinhole defect rates increase under pressure cycling, and above 0.50 mm actuation pressure must be raised beyond the target bench-scale pneumatic limit. Clean assembly for laboratory diagnostics is supported by ISO 14644-1:2015 Class 7 packaging and handling, while mechanical performance is measured with ASTM D412-16 for CE-BK tear resistance and ASTM D638-14 for CR-BK channel wall strength. The production process uses 16 µm layer resolution for channel floors and diaphragm membranes, with support removal at 60°C followed by a vacuum drying step at 23°C for 24 h before leak testing; leak verification is performed by pressure decay at 20 kPa, and any drop exceeding 0.5 kPa/min triggers rejection. Terminal parts include microfluidic manifolds, pneumatic valve test bodies, and disposable reagent distribution blocks used in R&D and low-volume clinical assay development. Strong solvents, especially aromatic hydrocarbons, ketones, and amine-containing cleaning agents, should be considered incompatible with long-term CE-BK contact until immersion data under ISO 1817 demonstrates otherwise; published data for this specific configuration is limited.
Competitive 3D Systems VisiJet RBK-EBK-D55 Multi-Material Composites (VisiJet CR-BK + VisiJet CE-BK) prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8618136850665
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
3D Systems VisiJet RBK-EBK-D55 Multi-Material Composites (VisiJet CR-BK + VisiJet CE-BK) is a dual-feedstock photopolymer system for MultiJet Printing platforms that support independent reservoir heating and per-voxel blend control. The product combines VisiJet CR-BK rigid black acrylate with VisiJet CE-BK elastomeric black acrylate to generate digital composite parts with nominal 55 Shore D hardness. The composite is not a pre-mixed resin; it is deposited as discrete droplets of the two component materials and cured under in-line UV exposure, producing a rigid-elastomer network whose local mechanical response depends on blend ratio and build-plane position. Representative published values for the rigid component include tensile strength of 32 MPa per ASTM D638-14, flexural modulus near 1,000 MPa per ASTM D790-17, heat deflection temperature of 60 °C at 0.455 MPa per ASTM D648-18, and hardness of 75 Shore D per ASTM D2240-15. Representative published values for the elastomeric component include tensile strength of 1.2 MPa per ASTM D412-16, elongation at break above 150%, tear strength near 5 kN/m per ASTM D624-00, and hardness near 60 Shore A. For the RBK-EBK-D55 digital composite itself, supplier documentation lists hardness and qualitative stress-strain response; full ASTM D638 or ASTM D412 datasets are not consistently published, so application-specific mechanical qualification is required before production use.
Depositing a single material creates a homogeneous cross-section with one set of tensile, flexural, and tear properties, whereas RBK-EBK-D55 introduces a controlled ratio of rigid and elastomeric photopolymers at each printable voxel. The D55 designation corresponds to a nominal 55 Shore D durometer, but the print file can vary the blend ratio to create local transitions from rigid black to elastomeric black within a single build. The interface between high-rigid and high-elastomer regions is formed from continuously mixed digital material bands rather than mechanical assembly or overmolding. Compared with VisiJet CR-BK alone, the composite lowers tensile modulus and increases strain to failure, but also reduces heat deflection temperature and solvent resistance. Compared with VisiJet CE-BK alone, the composite increases load capacity and dimensional stability while decreasing conformability and tear strength. Typical application fields include functional grips, seals, gaskets, ducting, snap-fit components with local compliance, and injection-molding prototypes where a single-part multi-durometer design is evaluated before committing to mold tooling.
| Property | VisiJet CR-BK | VisiJet CE-BK | Test method |
|---|---|---|---|
| Tensile strength | 32 MPa | 1.2 MPa | ASTM D638-14 / ASTM D412-16 |
| Elongation at break | 10% | 150% | ASTM D638-14 / ASTM D412-16 |
| Flexural modulus | 1,000 MPa | not applicable | ASTM D790-17 |
| Hardness | 75 Shore D | 60 Shore A | ASTM D2240-15 |
| Heat deflection temperature | 60 °C at 0.455 MPa | not reported | ASTM D648-18 |
| Tear strength | not reported | 5 kN/m | ASTM D624-00 |
Material changeover between single-resin and mixed-mode builds requires verification of reservoir fill level, printhead temperature stability, and waste-ink fluidity. MultiJet Printing platforms used with RBK-EBK-D55 typically deposit at layer thicknesses near 0.032 mm and in-plane resolution of 600 × 600 dpi. The viscosity of each component must remain inside the printhead jetting window for the entire build. If the elastomeric reservoir drifts below the supplier-recommended set point, drop mass changes and the digital blend ratio moves away from the programmed target at part surfaces. Published data for this specific failure mode in RBK-EBK-D55 is limited, but the mechanism is consistent with drop-on-demand piezoelectric jetting behavior. Operators should record reservoir temperature and jetting-health diagnostics per build to detect batch-to-batch viscosity variation. Cartridges from different lots should not be mixed without a purge cycle, because cure kinetics can vary enough to shift edge definition at blend boundaries.
Cyclic flexural loading of RBK-EBK-D55 structures concentrates strain in elastomer-dominant regions while rigid-dominant sections carry bending moment. Because the material is a photopolymerized acrylate network rather than a thermoplastic polyurethane, fatigue damage accumulates through microcrack formation in rigid domains and through matrix softening at high-energy bonds. A tensile-derived modulus from ASTM D638-14 is insufficient as a sole sizing input; service performance under repeated displacement should be evaluated with ASTM D790-17 flexural bending and with component-level cycling at the actual temperature and strain rate. Build orientation is a primary variable. In-plane stacking of the composite layers produces higher tensile isotropy than extrusion-based processes, but the z-axis is governed by interlayer radiation dose and support interface temperature. Published datasheet values for RBK-EBK-D55 typically report bulk material properties from post-cured test specimens, not orientation-specific tensile values. For functional qualification, tensile bars should be built in X, Y, and Z orientations on the target platform and tested per ASTM D638-14 or ASTM D412-16. The absence of published z-axis data means load-bearing designs should use a validation-derived derating factor, especially at strain concentrations near rigid-elastomer transitions.
If a transition band is reduced below approximately 1 mm in the print file, the effective blend resolution can approach the physical droplet spacing, and the cured boundary may show discrete droplet artifacts rather than a smooth modulus gradient. Published data for this specific configuration is limited; process validation on the target machine is required before production. The composite should not be treated as a high-temperature elastomer. The rigid component limits heat deflection to approximately 60 °C at 0.455 MPa, and the elastomeric component softens more quickly under continuous load. Avoid combination with amine-based surface coatings or uncured amine-containing adhesives, because residual amines can attack the acrylate network and accelerate environmental stress cracking. For outdoor service, UV exposure can embrittle elastomer-dominant regions; a UV-stabilized clear coat or accelerated weathering test per ASTM G154-23 should be considered.
Support removal for RBK-EBK-D55 parts follows the standard sequence for MultiJet Printing composites: bulk support is removed in a heated cleaning bath, followed by rinsing and drying. The elastomeric component has higher solvent uptake than the rigid component, so prolonged immersion in cleaning agent can create temporary softening and dimensional swelling. Production lines typically limit immersion to the shortest duration needed to clear internal channels and blind holes, then apply a vacuum dry cycle or low-temperature air dry. Because the two materials differ in crosslink density, solvent retention is not uniform across the part. Rigid-dominant sections recover dimensions quickly, while elastomer-dominant sections release solvent over longer periods. If surface hardness is measured immediately after drying, readings may be 2–5 Shore A lower than after full equilibration. This observation is process-dependent, and no comparable published data for RBK-EBK-D55 in all cleaning baths exists. Each facility should establish a drying-time study using ASTM D2240-15 shore measurements at fixed intervals until readings stabilize.
The composite is a thermoset photopolymer and cannot be reprocessed by heat. Storage of unopened cartridges should follow supplier temperature and light-exclusion guidelines. Once opened, cartridges are sensitive to moisture and ambient light; an environment above 60% RH can induce surface tack and shift jetting viscosity. Before loading, cartridges should equilibrate to the build environment for the duration specified on the cartridge label. Pre-drying in a conventional resin dryer is not recommended because low-molecular-weight reactive diluent can volatilize and alter the blend ratio. For applications involving continuous contact with polar fluids, immersion testing per ASTM D543-21 is required. The elastomeric domain swells in ketone and ester-based solvents; rigid-dominant composites are more resistant but can still stress-crack under continuous load. No FDA 21 CFR compliance for food contact or implantable use is claimed for this composite. Compared with cast polyurethane elastomers, RBK-EBK-D55 offers higher part complexity and local durometer control, but lower tear propagation resistance and solvent resistance should be expected. Compared with FDM thermoplastic elastomer filaments, the MultiJet Printing process eliminates thermoplastic weld lines, but the photopolymer network cannot be melted for recycling.
