Plexus® MA1130

Main features

Two-part methacrylate for multi-material structural bonding
26–33 minute work time at 75°F
Gap tolerance up to 0.5 inch

Product Description

Plexus® MA1130 is a two-part methacrylate structural adhesive for bonding composites and primed metals, with additional use on thermoplastic, metal, and composite assemblies. The 10:1 by-volume system provides a typical 26–33 minute working time at 75°F (23.9°C), 0.03–0.5 in (0.75–12.4 mm) gap tolerance, and a gray cured color. It can be dispensed from ready-to-use cartridges or bulk pails and drums. Limited surface preparation may be sufficient on supported substrates, while PC120 Cleaner Conditioner is recommended on metal.

Key features

Multi-material structural bonding: Designed for composites and primed metals, with bonding use across thermoplastic, metal, and composite assemblies.
Controlled processing window: 10:1 mix ratio by volume, typical 26–33 minute work time at 75°F (23.9°C), and 0.03–0.5 in (0.75–12.4 mm) gap tolerance.
Cured mechanical profile: Typical tensile strength of 2,800–3,200 psi (19.3–22.1 MPa), 30–45% elongation at break, and Shore D 75 hardness.

Applications / Suitable for

Structural bonding of composites and primed metals
Thermoplastic, metal, and composite assemblies

TDS, SDS & Technical Documents

PLEXUS® MA1130 Technical Data Sheet

English (Technical Data Sheet (TDS))

Technical Specifications

No specifications available.

Additional Information

Structural adhesive

Plexus® MA1130 is a two-part methacrylate structural adhesive for bonding composites and primed metals, with additional use on thermoplastic, metal, and composite assemblies. The 10:1 system combines an extended working window with substantial gap tolerance and cartridge or bulk dispensing options.

Two-part methacrylate 10:1 mix ratio by volume 26–33 min work time at 75°F 0.03–0.5 in gap tolerance Cartridge or bulk dispensing

Technical properties

As-supplied properties

Typical component properties before mixing. Part A / Part B order is preserved where paired.

Property	Value	Unit	Method / condition
Color	Off-white / Charcoal	–	Part A / Part B
Mix ratio by volume	10:1	A:B	Part A to Part B
Mix ratio by weight	10.4:1.0	A:B	Part A to Part B
Component density	0.98 / 0.95	g/mL	Part A / Part B
Component viscosity	110–150 / 90–130	×10³ cP	Part A / Part B

Bonding process

Processing and application

MA1130 can be dispensed from handheld cartridges or automatic meter/mix/dispense equipment. Bonding performance depends on maintaining the specified component ratio, controlling adhesive temperature, preparing contaminated surfaces appropriately, and mating the parts within the working time.

Mix ratio: 10:1 by volume or 10.4:1.0 by weight, Part A to Part B.

Recommended application temperature: 65–85°F (18–30°C). Temperatures outside this range can significantly change the cure rate.

Typical work time: 26–33 minutes at 75°F (23.9°C). Adhesive and activator temperature should be held reasonably constant for consistent dispensing.

Recommended bonding sequence

Stage 1

Prepare the bonding surfaces

Keep surfaces free of grease, dirt, and other contaminants. Plastics, coated metals, and raw metals may require only a dry rag or light solvent depending on surface condition. Dust-free composites may be bonded as-is or lightly abraded to remove mold release or increase surface area. PC120 Cleaner Conditioner is recommended on metal.

Stage 2

Mix and dispense

Load the cartridge and remove the end caps, attach the mixing tip, and dispense a mixer’s length before applying adhesive. Apply enough material to completely fill the joint when parts are mated. Handheld cartridges and automatic meter/mix/dispense equipment are supported.

Stage 3

Mate, fixture, and build strength

Mate parts within the working time and fix them in position until sufficient bond strength is achieved. Typical profiles at 60°F / 75°F / 90°F are: work time 30–40 / 26–33 / 15–20 min; time to 50 psi 45–50 / 35–40 / 25–35 min; time to 500 psi 65–75 / 60–70 / 35–40 min; and time to 1,000 psi >100 / 100–110 / 45–50 min. A post-bake is required for ultimate performance on thin-gauge metals. Contact Krayden for the applicable post-bake schedule.

Storage and Handling

Shelf life is 6 months based on continuous storage between 55°F and 77°F (13°C and 25°C). Intermittent or prolonged exposure above 80°F (27°C) reduces shelf life, and exposure above 100°F (38°C) should be avoided. Cool storage between 45°F and 65°F (7°C and 18°C) may extend shelf life; return cold-stored material to room temperature before use. Mixing large masses can generate substantial exothermic heat, so dispense only the quantity that can be used within the working time and keep gap thickness within the product’s maximum gap-fill capability.

Cured performance

Typical cured properties

Typical cured material properties. Tensile properties are in accordance with ASTM D638 / ISO 527.

Property	Value	Unit	Method / condition
Final color	Gray	–	Cured adhesive
Gap tolerance	0.03–0.5	in	0.75–12.4 mm; gap tolerance, not a universal recommended bondline thickness
Hardness	75	Shore D	Typical cured property
Tensile strength	2,800–3,200	psi	19.3–22.1 MPa; ASTM D638 / ISO 527
Tensile modulus	95–110	kpsi	655–758 MPa; ASTM D638 / ISO 527
Elongation at break	30–45	%	ASTM D638 / ISO 527
Peak exotherm time	60–80	min	10 g sample
Peak exotherm temperature	260 (127)	°F (°C)	10 g sample

Bond strength

Typical lap shear performance

Typical lap shear values measured according to ASTM D1002. CF indicates cohesive failure. PC120 Cleaner Conditioner is recommended on metal.

Property	Value	Unit	Method / condition
Lap shear, aluminum	2,350 (16.2)	psi (MPa)	ASTM D1002; cohesive failure
Lap shear, primed steel	2,716 (18.7)	psi (MPa)	ASTM D1002; cohesive failure

Technical guidance

Bulk dispensing hardware

For pail or drum dispensing, bulk equipment must be explosion proof. Parts in direct contact with the liquid adhesive and activator should be stainless steel. Avoid brass, carbon steel, copper, and copper-containing alloys. Teflon, Teflon-coated PVC foam, ethylene/propylene, or polyethylene are recommended for seals and gaskets; avoid Viton, BUNA-N, Neoprene, and other elastomers.

Clean-up and chemical exposure

Clean-up is easiest before cure using common laboratory solvents, citrus terpene or NMP-containing cleaners, degreasers, or soap and water. Cured adhesive may require careful scraping followed by a cleaning agent. Chemical resistance is described as excellent to hydrocarbons, acids and bases from pH 3–10, and salt solutions, while strong polar solvents and strong acids or bases are identified as susceptibility areas. Actual resistance depends on contact mode, frequency, duration, and temperature.

Next steps

Evaluate Plexus® MA1130 for your assembly

Need to validate MA1130 for a specific substrate pair, bond gap, dispense method, or temperature profile? Krayden can help review joint requirements, surface preparation, processing conditions, and the product’s typical strength data before application testing.

Contact Krayden

Plexus® MA1130 | Two-Part Methacrylate Adhesive