3M AC77

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Description for 3M AC77

A cyanoacrylate primer that aids bonding to low surface energy plastic substrates.

Application Type	Prime
1 Part or 2 Part	1-Part
Material Form	Clear Liquid
Substrate	Plastics, polypropylene, polyethylene, silicone rubber, PTFE, Low surface energy plastic substrates, ABS, Low surface energy plastic substrates
Manufacturer	3M
Chemistry	Heptane
Viscosity (cPs)	<3.00, 1.00
Color	Clear, Colorless
Can Be Used In Conjunction With These Materials	Cyanoacrylates (CAs)

Best Practices for 3M AC77

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Technical Data for 3M AC77

*See Terms of Use Below

Overview

Application Type
- Primer - Prime
1 Part or 2 Part
- 1-Part
Material Form
- Liquid - Clear Liquid
Substrate
- Low Surface Energy - Low surface energy plastic substrates
- Plastic - Plastics, Low surface energy plastic substrates
- Polypropylene
- Polyethylene (LDPE, HDPE) - polyethylene
- Fluoropolymer Teflon (PTFE) - PTFE
- ABS
- Silicone Rubber
- Other - difficult-to-bond
Chemistry
- Solvent-Based - Heptane
Application Method
- Brush
- Spray
- Dip
- Other - Wipe
Cure Method
- None
Color
- Clear / Transparent - Clear, Colorless
Can Be Used In Conjunction With These Materials
- Cyanoacrylates (CAs)

Specifications

Cure Specs

Viscosity (cPs)	<3.00, 1.00

Other Properties

Specific Gravity	0.7 (g/ml)

Business Information

Shelf Life Details	Storage: Store product in cool, dry area out of direct sunlight.;3M™ Scotch-Weld™ Instant Adhesive Activators, Primers, and Debonder can be expected to have a shelf life of one year from the date of shipment from 3M.
Shelf Life Type	From the date of shipment
Shelf Life (mon)	12

Not Good For

Don't Use With	difficult to bond plastics such as polypropylene, polyethylene, some plastics

Best Practices for 3M AC77

*See Terms of Use Below
1. Surface Preparation
  
  Prepare bonding surfaces according to Surface Preparation recommendations for the cyanoacrylate that will be used.
2. Application
  
  Apply primer to all difficult-to-bond plastic surfaces
  
  Allow solvent to dry completely.
  
  Promptly bond with a Scotch-Weld™ cyanoacrylate for plastic or elastomeric bonding.
3. Testing
  
  These products should be tested on substrates before use since their overspray or excess may attack certain substrates (especially some plastics) causing unsightly effects.
Comparable Materials for 3M AC77

*See Terms of Use Below

Spec Engine^® Results
- Loctite SF 7701(Henkel)
  Used to make polyolefin and other low energy surfaces suitable for bonding with Loctite cyanoacrylate adhesives.
- Primer P(Resinlab)
  It is designed for preparing hard to bond low energy surfaces such as polyethylene and polypropylene. It is a low viscosity blend dissolved in heptane solvent for easy application by brush or dauber to bonding surfaces.
- Loctite 793(Henkel)
  Used to make polyolefin and other low energy surfaces suitable for bonding with Loctite cyanoacrylate adhesives. Only recommended for difficult to bond substrates.
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Closest Results from this Manufacturer
- AC78(3M)
  Cyanoacrylate primer, helps to bind elastomeric materials including silicone.
- 86A(3M)
  Designed to promote faster initial adhesion to certain types of surfaces, such as polyurethane paint, epoxy primers, or epoxy composites. It is not intended for use where the acrylic adhesive would be in direct contact with aluminum, stainless steel, carbon, steel, or glass.
- Single Step Primer(3M)
  It is a polyurethane based primer that promotes adhesion of the polyurethane adhesives to glass, primed pinchweld metal and PVC Encapsulated parts. It is also a black-out primer to block out the sun's ultraviolet rays.
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