Two-Part Adhesives
ULTRACURE two-part adhesives are dispensed at a 10:1 ratio from a dual cartridge through a static mixing nozzle and cure by chemical reaction between resin and activator: no UV lamp and no ambient moisture required. The line brings together two structural adhesives with different purposes: P520, for low surface energy plastics such as polypropylene, polyethylene and PTFE, with no primer and no surface treatment, and 530, a clear adhesive for thick acrylic and polycarbonate.
Tell us which substrates you bond and in which process, and we will point you to the right adhesive.
10:1 Two-Part Adhesives for Low Surface Energy Plastics, Acrylic and Polycarbonate
Choosing a two-part adhesive starts with the substrates to be bonded and the time the process allows for assembly. Both ULTRACURE adhesives share a 10:1 mix ratio, full cure in 24 hours at 77 °F (25 °C) and a service temperature range of −54 to 249 °F (−48 to 121 °C); they differ in the substrates they bond, in open time and in the appearance of their uncured components.
ULTRACURE P520 — Adhesive for Polypropylene and Polyethylene
For structural bonding of low surface energy plastics: polypropylene, polyethylene (HDPE, LDPE and UHMWPE), TPO, PTFE and PVC, with no primer and no surface treatment; it also bonds nylon (PA). Over 1,247 PSI (8.6 MPa) shear strength on PP/PP with substrate failure (ASTM D 1002).
ULTRACURE 530 — Clear Adhesive for Acrylic and Polycarbonate
Clear two-part adhesive for structural bonding of thick acrylic (PMMA) and polycarbonate, to themselves and to aluminum; it also bonds ABS. Resists UV light, humidity and water. Over 1,261 PSI (8.7 MPa) shear strength on acrylic/acrylic with substrate failure (ASTM D 1002).
What Are the Advantages of a 10:1 Two-Part Adhesive?
In both adhesives of the line, the fixed mix ratio and cure by reaction between resin and activator shape the assembly process:
10:1 Mixing in the Nozzle
The 10:1 dual cartridge dispenses resin and activator at a 10:1 ratio by volume through the static mixing nozzle. Purge before attaching the nozzle and again with it in place, until the color is uniform. An incorrect mix ratio results in incomplete cure, so use only 10:1 cartridges and nozzles.
Cure by Chemical Reaction
Cure does not depend on a UV lamp or on ambient moisture. At 77 °F (25 °C) the bond reaches full cure in 24 hours; below 56 °F (13 °C) cure slows and above 84 °F (29 °C) it accelerates.
From −54 to 249 °F
Both adhesives maintain their strength across this service temperature range and resist humidity and water.
Where Are ULTRACURE Two-Part Adhesives Used?
Not Sure Which Adhesive Fits Your Application?
Share the substrates, part thickness, joint gap and available cycle time. Our technical team will recommend the adhesive and the starting conditions to validate in your process.
Frequently Asked Questions About UV Curing Systems
A two-part adhesive is supplied as two parts that react when mixed. In the ULTRACURE line they are the resin (Part A) and the activator (Part B): they mix at 10:1 by volume as they pass through the static mixing nozzle of the dual cartridge and cure by chemical reaction between both parts, with no UV lamp and no ambient moisture. The line consists of ULTRACURE P520 and ULTRACURE 530.
ULTRACURE P520. It was developed for low surface energy plastics —polypropylene; high-density, low-density and ultra-high-molecular-weight polyethylene; TPO, PTFE and PVC— and bonds them with no primer and no surface treatment. In ASTM D 1002 testing it exceeds 1,247 PSI (8.6 MPa) on PP/PP and 1,087 PSI (7.5 MPa) on HDPE/HDPE, with substrate failure.
ULTRACURE 530, a clear adhesive for structural bonding of thick acrylic (PMMA) and polycarbonate, to themselves and to aluminum; it also bonds ABS. In ASTM D 1002 testing it exceeds 1,261 PSI (8.7 MPa) on acrylic/acrylic and 1,145 PSI (7.9 MPa) on polycarbonate/polycarbonate, with substrate failure.
That is the open time, counted from the moment the adhesive leaves the nozzle: 2–3 min with P520 and 4–6 min with 530. The parts are then kept undisturbed until they reach handling strength (2–3 h at 77 °F (25 °C) with P520; 10–15 min with 530), and full cure is reached in 24 hours at 77 °F (25 °C).
Yes. Below 56 °F (13 °C) cure slows and above 84 °F (29 °C) it accelerates. To speed it up, both adhesives can be heated to 121–140 °F (49–60 °C) for 15 minutes.
Yes. The curing reaction is exothermic, and the adhesive warms up during and after mixing. That is why large masses of mixed adhesive should not be accumulated (for P520, no thicker than its 0.11 in (3 mm) maximum gap fill), and adhesive should not be left in the nozzle or in closed containers.
Both adhesives come in a 10:1 dual cartridge of 50 ml or 490 ml, dispensed through a static mixing nozzle with a manual or pneumatic applicator gun for 10:1 cartridges. Mixing nozzles are single-use.
At 40–77 °F (4–25 °C) in a cool, dry, ventilated place, away from heat sources, sparks and flames. In the original unopened container, shelf life is 12 months from the manufacture date.
ULTRACURE 530 is recommended for thick acrylic and polycarbonate structures such as high-vacuum chambers and swimming pools. Its technical data sheet does not state joint tightness, vacuum outgassing or permanent immersion performance; in those projects, joint tightness, outgassing of the cured adhesive at the operating vacuum level and performance under pressure differential or immersion are validated before full-scale implementation.
Where to Buy ULTRACURE UV Curing Systems?
Find the ULTRACURE UV2025, UV3651 and UV4051 through our distributor network.
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