ACRIFIX™ 1S 2105 Technical Information

Product and Use

ACRIFIX™ 1S 2105 Express Solvent Cement is a thin-bodied, quick drying, clear solvent adhesive (one-component) that contains methylene chloride and does not blush.

Applications

Used for bonding T-joints and bonding narrow areas of all grades of uncross-linked ACRYLITE® acrylic sheet. Preferably used for craze-free bonding of internally stressed parts, e.g. those made of extruded ACRYLITE® FF acrylic sheet and injection moldings made from ACRYLITE® molding compound. Crazing only occurs in parts with extreme internal stresses. ACRIFIX 1S 2105 is not gap-filling.

Typical Values

Viscosity (Brookfield A/60 @ 68ºF/20ºC): ~ 0.8 cp

Density (86ºF/20ºC): ~ 1.08 g/cm3

Color: clear

Flash point (Closed Cup): 27°F/-3°C

Solids content: ≤ 1 %

Storage stability: 2 years after filling, if correctly stored

Storage temperature: max. 86°F/30°C

Packaging materials: glass, tinplated steel or aluminum bottles with inside coating

Curing: Physically, through evaporation and absorption in the bonded articles

Safety Measures and Health Protection

Contains dichloromethane, a suspected carcinogen. Harmful by inhalation and swallowing, irritating to eyes, respiratory system, and skin. Do not breathe vapor or spray. Avoid contact with eyes and skin. Wear suitable protective gloves and clothing to avoid contact with skin. In operations where eye or face contact could occur, wear eye protection such as chemical splash-proof goggles or a face shield. In the event of contact with eyes, rinse immediately with plenty of water and consult a doctor. Keep away from heat, sparks, and flame. In case of fire and/or explosion, do not breathe fumes. Contains flammable liquid and vapor which can be harmful if inhaled. Keep container closed and use adequate ventilation.

Bonding Technique

Secure the parts to be bonded in the desired position. Introduce ACRIFIX 1S 2105 into the joint using a glue dispenser or disposable syringe and avoid bubble formation. It can be used for bonding T-joints and narrow areas of cast and extruded acrylic sheets. ACRIFIX 1S 2105 can be utilized in the same applications as most methylene chloride based cements as long as proper precautions are observed. It will not fill gaps caused by unfinished edges. It is recommended that edges be either scraped or milled to produce a flat level cementing surface.

The resulting bond will be firm in a relatively short period of time depending on the substrate and will have high ultimate strength.

Normally, a sawn or milled edge of one article is bonded at right angles to the original surface of another. Avoid bonding in areas where a high stress level is to be expected (e. g. near pin gates or different wall thicknesses). The parts to be bonded must have a very accurate fit. Grooves and notches are not filled. Clean the areas to be bonded with ACRIFIX™ TC 0030, petroleum ether or isopropyl alcohol before applying the adhesive. Either of two methods may be used:

A. Lock the two parts in position without adhesive and introduce ACRIFIX 1S 2105 into the joint with glue dispenser or disposable syringe. The adhesive penetrates the joint by capillary action.

For best results, hold the parts together with the aid of shims such as stainless wires. For sheets with thickness of less than .236” use ~.0002” and for sheets of .236” or more use a .0004”. The shims are placed at right angles to the sheet edge which are pulled out after introduction of the adhesive.

B. The appropriate edge of one of the parts to be bonded is dipped into ACRIFIX 1S 2105 and placed in contact with the second part after allowing sufficient time for solvent action – ACRYLITE FF sheet about 20 seconds, ACRYLITE® GP sheet about 60 seconds.

Properties of Bonds

Initial bond

ACRYLITE GP sheet / ACRYLITE GP sheet: ~ 20 to 30 sec

ACRYLITE FF sheet / ACRYLITE FF sheet: ~ 10 to 15 sec

Subsequent treatment of bonded items:

Not within the first 3 hours

Tensile Shear Strength:

Annealing increases the strength and also improves the weather resistance.

Material to itselfNon-annealedAnnealed at 5 hrs @ 80° F
ACRYLITE GP sheet 3000 ± 725 psi 3300 ± 725 psi
ACRYLITE FF sheet 4000 ± 725 psi 5500 ± 725 psi

Annealing:

Crazing will occur if high internal stress from fabrication is not relieved. Internal stress can be minimized by careful fabrication and annealing before the cementing. To anneal ACRYLITE sheet, place it in an air circulating oven at 180°F for an hour for each millimeter of thickness (minimum of two hours). For example, 6.0 mm (.236”) sheet would be annealed for six hours. For more information, refer to Technical Brief: Annealing