SCIGRIP / Arjay Technologies

Radii Perfection

Our radius compounds provide low exotherm, which means they shrink less, preventing air voids, cracks and time consuming finish work

Radius Compounds That Save You Money

Avoiding print is possible with Arjay's 2121 & 5121 products

In recent years boat builders increasingly have designed sharp radii and style lines into their models. The challenge on the floor becomes laminating those tight radii and not leaving air voids. Plus, this has to be done without creating other problems like gel coat cracks and “print” caused by heat and excessive resin shrinkage. Arjay’s Radius Compounds rise to these challenges by providing a tough, resilient, low shrink substrate between the gel coat and skin laminate that will allow you to produce void free parts that require little to no finish work.

2121 Performance Benefits

  • Lower exotherm and shrinkage for better finishes
  • Reduces air voids and dry fibers in laminates
  • Eliminates surface cracks and blemishes
  • Maintains resiliency to resist cracks
  • High impact resistence

Try Our 5121 Premium Radius Compound

We took our 2121 and added premium resin--and more of it--to create a brushable radius compound that is even stronger and more crack resistant. If your application requires class A cosmetics, pick 5121.

Radius Compound in Action

Easy to Apply

Cake bag method being used to fill tight radii

No Air Voids

Application demonstration at client location showing how to apply 2121 to prevent air voides

Availability

Table Header REGULAR
2121 or 5121 Premium Radius Compound
5 Gal Pail | 55 Gal Drum

TECHNICAL DATA

2121 Radius Compound

POLYESTER BONDING COMPOUND

RECOMMENDED FOR

RECOMMENDED FOR
Filling Tight Radii Filling Transitioning Style Lines
Bonding FRP Parts Bedding Core
Bonding on Verical Surfaces Short Assembly Time Apps
General Bonding

WORKING TIMES (In Minutes)

GEL TIME Gel Time Interval Total Peak Exotherm
18-24 16-30 34-54 200-250℉

TYPICAL PHYSICAL PROPERTIES

RECOMMENDED FOR
Color Tan
Odor Styrene
Texture Smooth
Weight 10.2 lbs/gallon
Stability 6 Months

VISCOSITY

GEL TIME RPM µ Min µ Max
2 720,000 960,000
20 90,000 140,000

TYPICAL CURED PROPERTIES

GEL TIME Test Average Deviation
Tensile Elongation 2% <1%
Tensile Strength 1,620 PSI
Flexural Strength 2,160 PSI 150 PSI
Heat Deflection 165℉ 5.0℉
Shore D Harness 75-85