DESCRIPTION
Multifunctional epoxy and cycloaliphatic-amine blend hardener for high performance composite parts. Thixotropic 1401-21“T” resin helps to prevent drainage in laminate on vertical surfaces. Two curing agents (4101-21 fast and 4101-21 slow) provide a complete range of working times from 40 minutes to 6 hours, and by blending the curing agents, any point in between.
Rhino 1401-21T with 4101-21 provides for ample pot life with fast cure development at standard process temperatures. Rhino 1401-21T also provides good thermal resistance, excellent fatigue and inter-laminar shear strength with rapid wetting of E-glass fiber reinforcements. Rhino 1401-21T Epoxy Resin is formulated for highly increased E-glass fiber compatibility with zero VOCs and 100% solids.
SUGGESTED USES
| System Liquid Properties | 1401-21T / 4101-21 |
| Viscosity 1401-21 Resin, 77°F: | 2,300 – 2,700 cps (thixotropic) |
| Viscosity 4101-21 Slow Hardener, 77°F: | 20 cps |
| Viscosity of 4101-21 Fast Hardener: | 50 cps |
| Mix Ratio, Resin to Hardener: | 100:30 by weight |
| Weight Per Gallon, 1401-21 Resin: | 9.5 – 9.6 lbs |
| Weight Per Gallon, 4101-21 Hardener: | 7.9 – 8.1 lbs |
| Weight Per Gallon, Mixed: | 9.2 lbs |
| Mixed Viscosity, 77°F: | 350 – 550 CPS (thixotropic) |
Rhino 1401-21 Resin, 100 parts / Rhino 4101-21 (all), 30 parts:
| Get Time, 150 grams at 77°F | Percent of 4101-21 Slow | Percent of 4101-21 Fast |
| 360 minutes | 100% (30PHR) | – |
| 240 minutes | 90% (27PHR) | 10% (3PHR) |
| 100 minutes | 75% (23PHR) | 25% (7PHR) |
| 70 minutes | 60% (18PHR) | 40% (12PHR) |
| 40 minutes | – | 100% (30PHR) |
Due to the highly thixotropic nature of 1401-21T epoxy resin, it is possible to laminate thick sections without vertical drainage of the epoxy resin. Rhino 1401-21T Epoxy Resin is formulated to improve the intimate bond between the epoxy resin and E-glass or carbon fiber reinforcements. This formulation technique results in increased physical properties as follows:
| • Fiber Pull-Out Strength | • Tensile Strength and Modulus |
| • Flexural Strength and Modulus | • Compressive Strength |
| • Impact Resistance | • Inter-Laminar Shear Strength |
Of equal, if not greater significance is the retention of the above properties after exposure to heat, cycle fatigue, water, expected adverse environmental reagents such as salt spray, acid rain, etc. The formulation of 1401-21T Epoxy Resin results in minimal degradation of the cured composite’s physical properties as compared to epoxy resin systems not containing the proprietary formulation constituents of 1401-21T Epoxy Resin. The benefit to the composite fabricator is obvious and clear: Increased product life and confidence!
A-260 unidirectional E-glass (epoxy compatible rovings) with Rhino 1401-21T Epoxy Resin and 4101-21 Epoxy Hardener (70:30 glass to resin ratio). Cure schedule – 2 hrs at 35ºC (infusion) / 4 hrs at 65ºC (basic cure) / 2 hours at 85ºC (final cure).
| Property | Result | Test Method |
| Tensile Strength: | 83,000 psi | ASTM D-638 |
| Tensile Modulus: | 5,250,000 psi | ASTM D-638 |
| 90° Tensile Strength: | 6.05 ksi | ASTM D-3039 |
| In-Plane Shear Strength (4 plies + 45°) | 9.14 ksi | ASTM D-3518 |
| Flexural Strength: | 86,000 | ASTM D-790 |
| Flexural Modulus: | 2,490,000 psi | ASTM D-790 |
| Izod Impact: | 44.5 ft/lb/in | ASTM D-256-A |
| Water Absorption: | 0.09% | ASTM D-570 |
| Barcol Hardness: | 64 | – |
Rhino 1401T-21 Epoxy Resin, 100 parts, Rhino 4101-21 Epoxy Hardener, 30 parts. Cured 2 hrs at 35ºC (infusion) + 4 hrs at 65ºC (basic cure).
| Property | Result | Test Method |
| Tg (DSC): | 194°F (90°C) | IPC-TM-650, 2.4 – 2.5 |
| Shore D Hardness: | 90D | Rhino |
| Tensile Strength: | 10.30 ksi | ASTM D-638 |
| Ultimate Elongation: | 7.4 – 7.5% | ASTM D-638 |
| Tensile Modulus: | 465 ksi | ASTM D-638 |
| Ultimate Compressive Strength | 14,500 psi | Sandia Labs Method |
| Flexural Strength: | 18.65 ksi | ASTM D-790 |
| Flexural Modulus: | 430 ksi | ASTM D-790 |
