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Purple ball bullet  INTRODUCTION

There are several manufacturers of adhesives in the world, but most widely known to a homebody are:
Elmer's, LePage, Mastercraft and Loctite.
Products for household and motor craft industry are available from building and hardware supplies, and various auto and boat parts stores.
Elmer's Products, Inc. and Aron Alpha® are the first manufacturers to donate samples, and expand my knowledge of adhesives, their proper selection, application and uses.

Elmer's Products, Inc. + Toagosei Co., Ltd. bring    Aron Alpha®


Toagosei Co., Ltd. of Japan has been producing cyanoacrylate adhesives since 1960, commercially marketed under names of Aron Alpha® in Japan, Cyanolit® in Europe and Krazy Glue® in the America.
Elmer's Products Inc. of Ohio markets and distributes Krazy Glue® to the retail trade and Aron Alpha® to the industrial trade in North America.



We also have a listing for the newly formed USA company in Mesa, Arizona:

CA PLUS, LLC - Quality Adhesives for less

Owl

Purple ball bullet  How to Select the Right Cyanoacrylate Adhesive - (Wide range of 30 types!)

Cyanoacrylates are single component instant adhesives that bond a wide variety of surfaces with a strong durable bond.
  1. Materials to be bonded
    The chemical name / or the trade name of the materials to be glued are required for the manufacturers Technical Assistance team, if you do not find it listed.

  2. Mating of Bonded Surfaces
    The gap between the two surfaces to be glued can determine the viscosity of cyanoacrylate.
    Whether you apply the glue before or after the assembly. There is a wide range of viscosities available from very thin to thick gel formulas.
    Some surfaces may have to be pre-treated by cleaning, sanding or priming to ensure a strong, permanent bond.

  3. Speed of Cure
    The manufacturing process/assembly may require a very fast setting adhesive,while manual assembly may require time for proper positioning or re-positioning of parts

  4. Aesthetic Requirements
    Visible joints may require additional consideration .... such a s chlorosis (bloom) potential, stringiness of adhesive, product clarity and method of application.

  5. Assembly Environment
    Temperature, humidity, ventilation, assembly methods, equipment and material being bonded can influence the performance of the adhesive.
    Less than ideal conditions should be factored into your adhesive selection.

  6. End-Use Environment
    The final use and/or operating environment of adhered parts is critical in specifying the right cyanoacrylate. The key factors are:

  7. Bond Stress
    If bonded assembly is to be subjected to stress in its final environment (and what working knife is not), the choice of proper adhesive becomes critical to strength and durability. (Wouldn't want handle scales to fall off)


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Purple ball bullet  Achieving Optimum Bond Strength

  1. Proper Bonding Surfaces
    Close fitting, non porous surfaces provide the best bond.
    A clearance from .001 to .003 inches between surfaces to be bonded is ideal
    A slightly rough surface provides the best bond.
    For porous surfaces or wider gaps consider a higher viscosity glue.

  2. Plastic cracking or dissolving
    Plastics such as PS, ABS, AS, acrylics, cellulose or Polycarbonate resins can swell, crack or dissolve when exposed to cyanoacrylic liquids.
    Avoid this by applying a very thin layer of the fastest setting formula, or use an accelerator to speed curing.

  3. High temperatures
    Temperatures above 176°F (80°C) will cause failure of most cyanoacrylates. Aron Alpha® offers special high temperature resistant adhesives (400X or 400T Series) that retain bond strength up to 248°F (120°C).

  4. Impact strength
    Cyanoacrylates provide high tensile strength but relatively poor resistance to peeling or impact loads.
    proper design of the joints to be glued - tongue and groove or sleeve joints, or rubber inserts - will improve the bond performance. Aron Alpha® 400X and 400T Series provide significantly higher impact resistance.

  5. Chlorosis (Blooming)
    Cyanoacrylates can produce a white powder resin when applied in very humid conditions, or when the bonded materials are immediately placed in a closed space.
    The cyanoacrylate liquid will volatilize from bonded area, polymerize in the adjacent air, and attach itself to the immediate area.
    There are a number of ways to avoid chlorosis:


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Purple ball bullet  How to Apply Cyanoacrylate Adhesives

  1. For best results and optimum adhesive performance, surfaces should be clean and free of contaminants.
    Remove oil, grease, form release agents with a suitable solvent.
    When using a cleaning solvent, first check for material compatibility, particularly in the case of plastics.
    An easy method for removing sontaminants is by using a clean cloth and wiping the surface with acetone or alcohol.
    Remove rust, paint and other residues with a sandpaper from the surfaces to be bonded.

  2. Wear protective eyewear and polyethylene gloves should be worn to protect against accidental bonding of fingers or spraying adhesive into eyes.
    The substrate should be dry and at or above 68°F (20°C). Keep area well ventilated to remove fumes and prevent chlorosis.

  3. When storing in refrigerator, allow the adhesive to gradually warm up to room temperature before use.
    Use as little adhesive as possible on the smallest surface to rebonded.
    CA PLUS recommends applying the cyanoacrylate in small quantities to one surface only.
    The parts should then be mated together under slight pressure. This causes the adhesive to spread out into a thin film and assures optimum adhesive performance.
    The pressure need only to be applied for several seconds.
    The advanced performance series cures rapidly, allowing for bonded parts to be handled withinn 10 - 60 seconds for most applications.
    Full cure is normally withinn 24 hours.
    In cases where the Accelerator is used, fixturing will normally occur in less than 5 seconds, with full cure in 8-12 hours
    When it is difficult to position two surfaces because of the fast set time, mate surfaces and apply a drop of glue at the crack. Capillary action will spread the adhesive.
    Use gel formula for porous surfaces.
    The setting time will vary with the materials and adhesive used.
    The bond will set within a few seconds ..... up to a few minutes at most.
    Maximum strength is achieved in 24 hrs.

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Purple ball bullet  Accessories

Many substrates present bonding problems that can be overcome with proper surface cleaning, preparation and acceleration of polymerization or curing.
Aron Alpha® offers products to improve performance of the cyanoacrylates in problem situations.

  1. Primers

  2. Accelerators
    Facilitates extremely fast cure of cyanoacrylates. Useful in "building" adhesives to fill gaps, and curing of cyanoacrylates on acidic and porous surfaces.
    Accelerators can remove surface contaminants and prevent adhesive migration. It can be applied before or after the application of the Aron Alpha® adhesive.
  3. Debonder
    A clean-up solvent for cyanoacrylates. Use to quickly and easily dissolve cured cyanoacrylate adhesives between adhered parts, excess adhesive on surfaces, or on bonded skin.


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Purple ball bullet  Care and handling of cyanoacrylates

  1. Moisture, accelerator storage:
    Avoid moist or humid conditions. Replace cap tightly. Store in airtight conditions with a desiccant for the best results.
    NEVER store cyanoacrylate adhesives with the accelerator.

  2. UV light, high temperature, refrigeration, shelf life:
    Ultraviolet rays (sunshine) will reduce the shelf life of cyanoacrylates.
    High temperature / high moisture can deteriorate the original bonding strength of the adhesive.
    Store in a dark cool place. Shelf life is about one year when stored at 40ºF.
    Refrigeration at 40-50°F (5-10°C) is recommended for extended storage.
    Shelf life at 72ºF is a minimum of 6 month.
    Avoid contaminating open containers

  3. First Aid, MSDS:
    If cyanoacrylate adhesive comes in contact with your eye, immediately wash thoroughly with water and seek medical attention.
    NEVER use solvents or rub an eye.
    In its liquid state the adhesive may have a slightly irritating odor, so provide adequate ventilation. Contact the Technical Assistance Team at 1-800-338-5192 for detailed technical information and MSDS (Material Safety Data Sheets).

  4. Exothermic reaction:
    Cyanoacrylate will produce exothermic reaction (heat) when it is polymerized (resinified).
    The heat gets particularly high when large amounts of cyanoacrylate permeates a porous ,aterial, such a woven cloth or urethane rubber, and quickly solidifies.
    If an accelerator such a s caustic soda or amine is contained in such materials, the exothermic reaction will take place so strongly it can cause burns.



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