Material Profile: TR300 Ultra-High Temp Resin for SLA / LCD 3D
Phrozen SLA / LCD Resin Technical Report Series
Compiled from Phrozen official datasheets, SDS documents, and third-party technical reviews
Abstract—Phrozen TR300 (Gray) is the highest-HDT resin in Phrozen's catalogue — heat deflection temperature of 160–190 °C makes it suitable for parts that experience exposure to oven / process temperatures (dental thermoforming, low-temperature injection-mould tooling, industrial high-temp prototypes). Trade-offs include lower elongation (2–6%) and higher print viscosity.
Index Terms—additive manufacturing, SLA, LCD, engineering resin, ultra-high temperature, HDT 190 °C, dental thermoforming.
I. MATERIAL IDENTIFICATION
This section establishes the canonical names and commercial designations under which the resin is supplied.
A. Designation
Trade name: Phrozen TR300 Ultra-High Temp Resin. Color: Gray.
B. Resin Family
Ultra-high-temperature engineering acrylate / urethane-acrylate photopolymer with thermally stable monomer selection; 405 nm UV cure.
C. Aliases and Alternative Designations
|
Alias |
Origin / Usage |
|
TR300 |
Standard product designation |
|
Ultra-High Temp TR300 |
Marketing descriptor |
|
TR300 Gray |
Color variant |
II. COMPOSITION AND PHOTOPOLYMER CHEMISTRY
A. General Resin Family
Generic photo-polymerisation: monomers (multi-functional acrylates / urethane-acrylates) + photoinitiator (e.g., TPO / BAPO) + 405 nm UV → crosslinked thermoset network. Exact formulation is proprietary. Thermally stable monomer / oligomer selection for ultra-high HDT.
Fig. 1. Photopolymer crosslinking schematic for the resin family.
Fig. 2. SLA / LCD print → wash → post-cure process flow.
B. Composition Breakdown
TABLE I COMPOSITIONAL BREAKDOWN OF TR300 ULTRA-HIGH TEMP RESIN (TYPICAL / PER SUPPLIER DATASHEET)
|
Constituent |
Mass fraction |
Function |
|
Heat-resistant urethane-acrylate oligomers + thermally stable multi-functional acrylates |
≈ 70–85 wt% |
Form the backbone of the cured network |
|
Reactive diluents (low-viscosity acrylates) |
≈ 10–20 wt% |
Reduce viscosity; increase crosslink density |
|
Photoinitiator (acylphosphine oxide, e.g., TPO) |
≈ 1–3 wt% |
Absorbs 405 nm UV, initiates radical polymerisation |
|
Pigments, stabilisers, additives |
≈ 1–3 wt% |
Color, UV blocker for shelf life, surface flow |
|
Total |
100 wt% |
— |
III. MECHANICAL PROPERTIES
TR300 prioritises thermal performance — modulus, stiffness, and HDT are all elevated; elongation and impact resistance are reduced. Suitable for static high-temperature applications.
TABLE II MECHANICAL PROPERTIES OF TR300 ULTRA-HIGH TEMP RESIN (POST-CURE, ISO 527 / ASTM D638)
|
Property |
Value |
Test method / source |
|
Density |
≈ 1.10–1.20 g/cm³ |
ASTM D792 |
|
Viscosity (uncured liquid) |
≈ 500–700 cP @ 25 °C |
Brookfield viscometer |
|
Surface hardness |
≈ Shore D 85–90 |
ASTM D2240 |
|
Tensile strength, ultimate (UTS) |
≈ 55–75 MPa |
ASTM D638 / ISO 527 |
|
Tensile (Young's) modulus |
≈ 2500–3500 MPa |
ASTM D638 |
|
Elongation at break |
≈ 2–6 % |
ASTM D638 |
|
Flexural strength |
≈ 90–120 MPa |
ASTM D790 |
|
Izod impact, notched (23 °C) |
≈ 15–25 J/m |
ASTM D256 |
IV. RECOMMENDED PRINT PARAMETERS
Values below are the manufacturer-recommended starting points for compatible Phrozen LCD printers; specific machines may require ±10–20% adjustment based on LCD age and ambient temperature.
TABLE III RECOMMENDED PRINT AND POST-PROCESS PARAMETERS FOR TR300 ULTRA-HIGH TEMP RESIN
|
Parameter |
Value / range |
Notes |
|
UV wavelength |
405 nm |
Standard for Phrozen LCD printers |
|
Compatible printers |
Sonic Mini 8K / 8K S, Sonic Mighty 8K / 12K, Sonic Mega 8K |
Best paired with the indicated resolution class |
|
Layer thickness |
0.025–0.050 mm (typical 0.030 mm) |
Thinner layers improve detail at the cost of print time |
|
Normal exposure (per layer) |
≈ 3–5 s @ 8K (longer for higher viscosity) |
Test-tower validation recommended |
|
Bottom exposure |
≈ 25–35 s × 6 layers |
First-layer adhesion to build plate |
|
Lift distance / speed |
≈ 6–8 mm @ 60–100 mm/min |
Slower for fine geometries |
|
Wash medium |
Isopropyl alcohol (IPA) or 95% ethanol |
30–60 s wash; do not over-soak |
|
Post-cure |
405 nm UV box, 60–180 min for maximum HDT depending on size |
Phrozen Cure Mega S or equivalent |
V. GLASS TRANSITION TEMPERATURE (TG)
Reported / typical Tg: ≈ 130–165 °C.
Highest Tg in the Phrozen line. Continuous service to ~140 °C with extended post-cure; short excursions to 180 °C.
VI. HEAT DEFLECTION TEMPERATURE (HDT)
HDT defines the temperature at which a 1.27 mm-thick standardised bar deflects 0.25 mm under the specified flexural load. Two test loads are reported per ASTM D648 / ISO 75.
TABLE IV HEAT DEFLECTION TEMPERATURE OF TR300 ULTRA-HIGH TEMP RESIN
|
Test load |
HDT |
Test method / source |
|
0.45 MPa |
≈ 160–190 °C |
ASTM D648 (Phrozen reports HDT @ 0.45 MPa: 190 °C) |
|
1.82 MPa |
≈ 130–160 °C (estimate) |
ASTM D648 |
VII. DISTINGUISHING CHARACTERISTICS AND STANDARDS
A. Highest HDT in Phrozen lineup (160–190 °C)
Beats Ceramic Pro, FR940, and PC/GF-like by 50+ °C. The unambiguous choice when service temperature is the dominant requirement.
B. Dental thermoforming compatibility
Specifically marketed for dental thermoforming applications — TR300 patterns survive the thermoforming press cycle without deformation.
C. Low-temperature injection-mould tooling
Suitable as soft-tool master for low-temperature injection moulding (PE, PP, soft TPE) where service temperature is below the TR300 HDT.
D. Brittleness and viscosity caveats
Low elongation (2–6%) makes TR300 brittle — not for impact loading. Higher viscosity (500–700 cP) requires care during printing; pre-warm bottle to ~30 °C for best results.
VIII. REPRESENTATIVE APPLICATIONS
TR300 Ultra-High Temp Resin is typically deployed in the following applications:
1) Dental thermoforming positives: Patient dentition model masters that survive vacuum-forming press cycle.
2) Low-temperature injection-mould tooling: Soft tool masters for prototype injection moulding of PE / PP / soft TPE.
3) High-temperature industrial prototypes: Parts in elevated-temperature service (oven environments, near-motor, post-bake).
4) High-temperature jigs and fixtures: Workholding for parts that go through bake / cure / heat-treat cycles.
5) Engineering test specimens (heat-cycle): Specimens that must survive 100+ °C without deformation.
IX. REFERENCES
[1] Phrozen Technology, “TR300 Ultra-High Temp Resin Product Page,” 2024. Available: https://phrozen3d.com/products/tr300-ultra-high-temp-resin
[2] Phrozen Technology, “TR300 SDS,” 2024. Available: https://cdn.shopify.com/s/files/1/0436/6965/1618/files/SDS_TR300.pdf
[3] Phrozen Technology, “TR300 Engineering Resin User Guide (Gray),” 2024. Available: https://www.schichtwerkstatt.de/Dateien/Phrozen/Datenblatt/User_Guide_TR300_Gray_EN.pdf
[4] ASTM D638-14, “Standard Test Method for Tensile Properties of Plastics,” ASTM International.
[5] ASTM D2240-15, “Standard Test Method for Rubber Property — Durometer Hardness,” ASTM International.
[6] ASTM D648-18, “Standard Test Method for Deflection Temperature of Plastics Under Flexural Load,” ASTM International.
(Image Source : Phrozen)