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 |
|
|