MPT - Black 355
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MPT-Black 355nm — Industrial SLA Laser Resin
High-Toughness, Thermally-Curable Photopolymer Engineered for Large-Format 355nm Stereolithography Systems
MPT-Black 355nm is a Multi-Purpose Thermal (MPT) resin designed from the ground up for industrial laser SLA printers operating at 355nm wavelength. Purpose-built for large-format production, this resin delivers exceptional toughness, impact resistance, and fine detail retention at fast print speeds — with the added versatility of dual cure capability: UV light cure or thermal oven cure. Easy IPA cleanup means less downtime between runs.
Available in 1-Gallon, 5-Gallon, and 55-Gallon Drum quantities to match any production volume — from prototyping shops to high-throughput service bureaus running around the clock.
Why MPT-Black 355nm
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⚡ Dual Cure Technology UV light cure or thermal cure (275°F / 1 hr). Thermal post-cure unlocks up to 35.9% peak elongation and 5,560 psi tensile strength — no UV flood box required. |
🛡️ High Toughness & Impact Notched Izod impact up to 52.52 J/m. Parts survive drops, snap-fits, and functional assembly where brittle resins fail. |
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🔬 High Detail Retention Low viscosity (200–250 mPa·s) ensures excellent recoater flow across large build platforms and captures fine feature detail at every layer. |
🧹 Easy IPA Cleanup Formulated for fast, simple cleanup in isopropyl alcohol — critical for high-throughput operations running multiple builds per day. |
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📐 Low Shrinkage <2% linear shrink keeps dimensional accuracy tight on large-scale parts — bumpers, dashboards, architectural models, and tooling masters. |
🧪 Broad Chemical Resistance Excellent resistance to mineral oils, salt water, sodium hydroxide, and bleach. Tested across 10 common industrial solvents. |
Compatible Large-Format 355nm SLA Printers
MPT-Black 355nm is engineered for open-material 355nm laser SLA platforms. It is compatible with virtually any industrial SLA system running a 355nm UV laser, including but not limited to:
| Manufacturer | Compatible Models |
| Kings 3D | SLA 400 Pro, 450 Pro, 600 Pro, 650 Pro, 6035 Pro, 800 Pro, 850 Pro, 1000 Pro, 1200 Pro, 1450 Pro, 1700 Pro, 2700 Pro |
| UnionTech | Lite 380 / 450 / 600 / 800, Pilot 250 / 450, RSPro 600 / 800 / 1400 / 1800 / 2100 |
| 3D Systems | ProX 800, ProX 950, SLA 750, SLA 750 Dual |
| Stratasys (Neo Series) | Neo450s, Neo800, Neo800+ |
| ProtoFab (Vistar) | SLA 150, 300, 450, 600, 800, 1100, 1600, 2400 |
| ZRapid Technologies | iSLA 550, iSLA 880, iSLA 1100 |
| Eplus3D | EP-A350, EP-A450, EP-A650, EP-A800 |
| ACME3D (Shanghai Acme) | H360, H600, H800 and other industrial SLA models |
| Dreambot3D | SLA-300, SLA-450, SLA-600, DB-550 and other industrial SLA models |
Don't see your machine listed? If your SLA printer uses a 355nm UV laser with an open material system, MPT-Black 355nm is almost certainly compatible. Contact us for print parameter recommendations for your specific system.
Technical Data — General Properties
| General Properties | |
| UV Absorption Range | 345 – 405 nm |
| Appearance | Black (opaque) |
| Uncured Density | 1.1 g/ml |
| Viscosity (25°C) | 200 – 250 mPa·s |
| Shore D Hardness | 80 – 83 |
| Linear Shrinkage | < 2% |
| Grade | Industrial |
| Odor | Mild acrylate |
Mechanical Properties — UV Light Post-Cure
Post Cure: 120 min @ 60°C, 405nm Light
| Property | Average | Peak |
| Elastic Modulus | 269,000 psi | 301,000 psi |
| Tensile Strength | 4,980 psi | 5,030 psi |
| Elongation at Break | 23% | 27.6% |
| Work to Failure | 10.87 J | 13.1 J |
Mechanical Properties — Thermal Post-Cure
Post Cure: 275°F for 1 Hour — No Light Required
| Property | Average | Peak |
| Elastic Modulus | 270,000 psi | 301,000 psi |
| Tensile Strength | 5,080 psi | 5,560 psi |
| Elongation at Break | 25.5% | 35.9% |
| Work to Failure | 12.4 J | 16.8 J |
| Notched Izod Impact | 46.73 J/m | 52.52 J/m |
* Tensile specimens tested per ASTM D638. Full Technical Data Sheet available upon request.
Solvent & Chemical Resistance
24-hour immersion testing on post-cured 1×1×1 cm specimens (% weight gain):
| Solvent | Weight Gain (%) | Solvent | Weight Gain (%) |
| Mineral Oil (Light) | 0 | Mineral Oil (Heavy) | 0 |
| Sodium Hydroxide | 0.75 | Salt Water (3.5%) | 3.3 |
| Isopropyl Alcohol | 5.1 | Bleach (5% NaOCl) | 5.1 |
| Water | 5.1 | Butyl Acetate | 12.5 |
| Xylene | 13 | Acetone | 28 |
Available Sizes
| Size | Best For |
| 1 Gallon (4kg) | Parameter testing, small-run prototyping, and new machine setup |
| 5 Gallon (20kg) | Medium-volume production, service bureaus, and vat refill for mid-size machines |
| 50 Gallon Drum (200kg) | High-volume production lines, full vat fills on large-format systems, and bulk supply contracts |
💡 The MPT Thermal Cure Advantage
| Large-format SLA parts are notoriously difficult to UV post-cure uniformly due to their size. MPT resins solve this with thermal post-cure capability — simply place parts in an industrial oven at 215-275°F for one hour. Heat penetrates uniformly regardless of part size, geometry, or pigment opacity, delivering superior and more consistent mechanical properties than UV light curing alone. |
Post-Cure Options
| Method | Settings | Notes |
| UV Light Cure | 30-120 min under 405nm light | Standard method; best for parts that fit in UV cure chambers |
| Thermal Cure (Oven) | 215-275°F (135°C) for 1 hour, no light | Ideal for large parts; delivers higher tensile & elongation |
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🏭 Need Volume Pricing or Custom Print Parameters? We work directly with production shops and service bureaus running large-format SLA equipment. Whether you need recurring drum shipments, NET 30 terms, or help dialing in print parameters on your specific machine, our team is here to help. 📧 Info@3dresinsolutions.com | 🌐 www.3drs.com |
| ⚠️ Safety Notice: Do not print products intended for any person or animal who may chew on or otherwise orally ingest the product. Always read and understand all safety data before handling liquid photopolymer. Full SDS available upon request. |
Product and application recommendations are provided to aid customers in achieving desired results. No warranties, expressed or implied. 3D Resin Solutions shall not be held liable for any loss of profits or any indirect, incidental, special, exemplary, punitive, or consequential damages. Full-scale testing of end-use products is the user's responsibility. All risks are assumed by the end user. Mechanical properties tested per ASTM D638.