Epoxy Infusion Resin by SikaBiresin CR86 | Perigee Direct

Product Name

SikaBiresin CR86 Epoxy Infusion System

Brief Description

SikaBiresin CR86 is a high-clarity, low-viscosity epoxy infusion system for composite structures, tools, and marine parts. It pairs with three CH86 hardeners for different working times while keeping a fluid mixed consistency, supporting resin infusion, RTM, vacuum bagging, and wet layup.

Popular Applications & Uses

• Resin infusion and vacuum-assisted processing
• Resin transfer molding (RTM)
• Composite tooling and mold fabrication
• Marine hull and structural infusion work
• Transportation composite parts
• Closed-mold transfer and hand-placement laminating

Industries that Commonly Use It

• Marine: used for hull and structural infusion on boats and marine composite parts.
• Mold Making/ Casting: the high-clarity resin makes flow and wet-out easy to observe during tooling and mold fabrication.
• Aerospace/Defense: fits composite tooling and part infusion where clean, void-free laminates matter.
• Transportation/ Specialty Vehicle: used to infuse composite transportation components.
• General Manufacturing: a standard epoxy infusion resin for composite parts shops.

Special and Unique Features

• Three hardener speeds: CH86-2 fast, CH86-3 medium, and CH86-6 slow support a range of infusion fill times.
• High clarity: clear resin with a light-amber mixed appearance makes flow and wet-out easy to watch during setup.
• Low mixed viscosity: approximately 266 cps for the fast combination, supporting efficient flow through reinforcement.

Key Properties

• Mix ratio (fast combination): 100 parts resin to 27 parts hardener by weight.
• Mixed viscosity (fast combination): approximately 266 cps at 25 degrees C.
• Gel time (fast combination): 25 to 35 minutes for a 150-gram mass at 77 degrees F.
• Appearance: clear resin, light-amber when mixed.

Surface Compatibility

SikaBiresin CR86 bonds to common reinforcement and tooling substrates used in infusion work:

• Fiberglass reinforcement
• Carbon fiber reinforcement
• Glass reinforced plastic (GRP)
• Fiberglass reinforced plastic (FRP)
• Composite tooling substrates

Known backups / known substitutes

• Sika does not publish a direct cross-reference for CR86; contact Perigee Direct to compare against other infusion systems in the catalog.

Comparison Note

SikaBiresin CR86 sits alongside SikaBiresin CR94 and CR72 in Perigee's composite laminating line. CR86 is purpose-built for infusion and RTM with a high-clarity resin, CR94 favors standard wet layup and vacuum bagging, and CR72 adds a UV-resistant formulation for parts that see sun exposure.