PAI Uncured Powder — Custom Mesh

RENU™ PAI UNC-MP### is the custom-mesh version of uncured PAI powder, available across the 20–170
mesh range. Improved moldability of uncured material combined with a customer-specified PSD enables
complex near-net-shape parts in sizes not achievable with standard 140-mesh cuts. Requires post-cure to
achieve full PAI properties.
Available Mesh Sizes
Mesh Size Max Particle (μm) Typical Use
20 Mesh ≤ 850 μm Thermal spray, rotomolding, heavy coatings
40 Mesh ≤ 425 μm Flame spray, fluidized-bed coating
60 Mesh ≤ 250 μm Plasma spray, coarse compression molding
80 Mesh ≤ 180 μm Fluidized-bed, general compression molding
100 Mesh ≤ 150 μm Standard powder coating
120 Mesh ≤ 125 μm Precision powder coating
140 Mesh ≤ 105 μm Standard stock — SLS, compression molding
170 Mesh ≤ 90 μm Fine SLS, precision electrical applications
Physical Properties
Polymer Type Polyamide-Imide (PAI) — Uncured
RENU™ Code RENU™ PAI UNC-MP### (### = mesh)
Available Mesh Range 20 to 170 mesh
Color Light brown
Bulk Density (loose) 0.40–0.80 g/cm³ (varies with mesh)
Apparent Density 1.42 g/cm³
Processing Requires post-cure cycle (200°C / 2–4 hours typical)
Thermal Properties
PolyClean Technologies, Inc.
Recycled High-Performance Polymer Powders
TDS-016
Technical Data Sheet
PolyClean Technologies, Inc. | 4709 Highway 36 South, #12, Rosenberg, TX 77471 USA
Phone: (832) 595-9660 | Email: info@polycleantech.com | Web: www.polycleantech.com Page 2
RENU™ PAI UNC-MP### — Rev 1.0 | Issued: April 2026
Glass Transition Temperature (Tg,
cured) 280°C (536°F)
Continuous Use Temperature (cured) 260°C (500°F)
Mechanical Properties
Property SI Units US Units
Tensile Strength (cured) 185 MPa 26,800 psi
Flexural Strength (cured) 240 MPa 34,800 psi
Compressive Strength (cured) 230 MPa 33,400 psi
Electrical Properties
Dielectric Strength (cured) 24 kV/mm
Volume Resistivity (cured) 10¹⁵ Ω·cm
Chemical Resistance
Medium Resistance Notes
Weak Acids Good resistance Dilute acids
Weak Bases Good resistance Avoid strong caustics
Organic Solvents Excellent resistance Most common solvents
Hydrocarbons / Fuels Excellent resistance Including aromatics
Water / Steam Fair resistance Slight hydrolysis at high
temp
Water Absorption (24h) ~ 0.3% Moderate moisture uptake
Recommended Applications
▪ Large-part compression molding with complex geometry
▪ Heavy-duty wear components requiring cure (coarse mesh)
▪ Precision near-net-shape parts (fine mesh)
▪ Specialty components requiring uncured processing window
Packaging Options
PolyClean Technologies, Inc.
Recycled High-Performance Polymer Powders
TDS-016
Technical Data Sheet
PolyClean Technologies, Inc. | 4709 Highway 36 South, #12, Rosenberg, TX 77471 USA
Phone: (832) 595-9660 | Email: info@polycleantech.com | Web: www.polycleantech.com Page 3
RENU™ PAI UNC-MP### — Rev 1.0 | Issued: April 2026
Package Type Size Typical Use
Corrugated Box Up to 55 lbs (25 kg) Sample & trial quantities
Bulk Drum 150 lbs (68 kg) standard Standard production runs
Custom As specified Large-volume OEM orders
Processing & Handling Notes
▪ ⚠ Requires thermal post-cure for full properties.
▪ Contact PolyClean for processing guidance.
▪ See TDS-014 for cured property values.
Disclaimer: The information in this technical data sheet was not produced by PolyClean Technologies’ testing and measurements but
was assembled from information readily available from different suppliers of this polymer. This information is being provided for easy
reference and general guidance; customers are advised to verify any information which is critical to their applications and determine
whether or not our products are suitable for their intended use.
Trademark Notice: Where trade names appear (e.g., Victrex™ PEEK is a registered trademark of Victrex plc; ULTEM™ is a registered
trademark of SABIC; Torlon™ is a registered trademark of Solvay Specialty Polymers; Radel™ is a registered trademark of Solvay),
they are referenced for identification purposes only. PolyClean Technologies is not affiliated with, endorsed by, or a licensee of any
original polymer manufacturer. For full reference: www.polycleantech.com/trademark-reference