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"Founded in 1974, ARJAY began as a fiberglass parts supplier, catering mainly to major boat builders. Its success in this competitive area was based on developing and applying innovative materials and processes to reduce cost, raise quality and ultimately increase output. Here are a few examples of ARJAY’s innovation over the years:

ARJAY was one of the first builders in the country to utilize knitted fabrics, which were new at the time, in larger, pallet quantities.

ARJAY developed a line of resin application equipment which was marketed nationally through Binks.

ARJAY innovation has been featured in Professional Boatbuilder Magazine. Once for gel coat application and a second time for our proactive environmental practices that actually saved money.

For several years , ARJAY’s founder, Bob Cottrell, wrote a monthly column for the CFA’s magazine, “Composites Fabrication” entitled “Back to Basics”.

In 1979 ARJAY developed a process for spraying filled polyester resin to replace plywood cores. For the next 15 years, ARJAY built thousands of parts using this in-house produced material.

In 1994 ARJAY ceased parts production to turn full attention to developing and marketing a line of filled polyesters known as ARJAY Performance Products. By combining our experience as an efficiency-oriented fiberglass parts builder and our formulation expertise, these new products were inherently easy to use and continue to provide consistent results for our marine and industrial clients to this day."

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SG5000 has been proven effective when used instead of glass patching in the repair of cracks and dings in fiberglass molds. It has also been shown to provide more durable repairs when compared to other, traditional patching and repair methods.


Arjay Technologies SCIGRIP

Arjay Technologies 4001 Core Bonding possesses flexible gel times.

Arjay Technologies 4001 Core Bonding

Arjay Technologies 2011 Medium Weight is better resin availability and lower exotherm means a superior bond with less shrinkage and cracking.

Arjay Technologies 2011 Medium Weight

Arjay Technologies 5121 Premium Radius combined with premium vinyl ester resins, resulting in high physical strength,excellent blister resistance and HDT &gt; 200 °F. It is formulated especially for filling behind the gel coat of tight radii and bonding glass to glass joints. In addition, Arjay’s 5121 Brushable Radius Compound has excellent crack resistance, reduces finish work and helps provide better overall cosmetics.

Arjay Technologies 5121 Premium Radius

Arjay Technologies SG230 HV is the flexible solution that combines just one adhesive with a choice of 5 different activators to create custom working times that will match just about any marine bonding workflow. This innovative adhesive has low emissions and requires almost no surface preparation. Furthermore, its predictable cure dries tack-free with litle or no residual odor. You get the tough, permanent bond you expect, a cleaner workplace, and a dependable adhesive that works the way you do.

Arjay Technologies SG230 HV

SCIGRIP® SG5000 Adhesive has been proven effective when used instead of glass patching in the repair of cracks and dings in fiberglass molds. It has also been shown to provide more durable repairs when compared to other, traditional patching and repair methods.

SCIGRIP® SG5000 Adhesive

Arjay Technologies 2121 Radius Compound is a polyester bonding compound which has low exotherm means it shrinks less, preventing air voids and time consuming finishes work.

Arjay Technologies 2121 Radius Compound

Arjay Technologies 7121 Vinyl Ester is specially formulated with Bisphenol-A based epoxy vinyl ester resin for superior physical properties when compared to polyester resins. This has made it the ideal choice for many marine applications where the bonds are structurally critical. It is best known for its critical bonding applications.

Arjay Technologies 7121 Vinyl Ester

Arjay Technologies 6011 Ceramic Pourable is great for building or repairing boat hull transoms, where its extremely high compressive and tensile strengths make for a strong finish. It’s great for filling most large volumes where superior strength and rigidity are major concerns.

Arjay Technologies 6011 Ceramic Pourable

Arjay Technologies 4501 J-Core is ultra-light weight which makes it the perfect compound for bonding hardtops and small part “sandwich” bonds.

Arjay Technologies 4501 J-Core

Arjay Technologies

"Founded in 1974, ARJAY began as a fiberglass parts supplier, catering mainly to major boat builders. Its success in this competitive area was based on developing and applying innovative materials and

Arjay Technologies - Fiberglass - Innovative Materials - Knowde

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4501 J-Core Managing Material Flow

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	Value	Units	Test Method / Conditions
Weight	4.6	lbs/gallon	-

	Value	Units	Test Method / Conditions
Viscosity (RPM) 2	50000 - 65,000	µ	-
Viscosity (RPM) 20	18000 - 28,000	µ	-

	Value	Units	Test Method / Conditions
Tensile Elongation (75°F (24°C))	8.2	%	-
Tensile Strength (75°F (24°C))	1060.0	PSI	-
Flexural Strength (75°F (24°C))	6960.0	PSI	-
Flexural Modulus (75°F (24°C))	357000.0	PSI	-
Compressive Strength (75°F (24°C))	1910.0	PSI	-
Lap Shear (75°F (24°C))	1100.0	PSI	-
Heat Deflection (75°F (24°C))	150.0	°F	-
Linear Shrinkage (75°F (24°C))	max. 1	%	-
Shore D Hardness (75°F (24°C))	40 - 45	-	-

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