ACRIFIX® 1R 0192 Bright

Technical Data Sheet (TDS)

Typical Values of Properties

• Viscosity (Brookfield II/12/68°F/20°C): 1800 ± 200 cp
• Density/68°F/20°C: ~ 1.02 g/cm3
• Refractive index nD: ~ 1.44
• Color: clear, slightly purple
• Flash point (Closed Cup): < 39°F / 4°C
• Solids content: 32 ± 2%
• Storage stability: 2 years in the original container, if stored properly. Maximum 86°F / 30°C
• Packaging materials: aluminum
• Curing: Physically by evaporation and absorption in the jointed parts

Light Source Curing Period (at 5 hrs at 77°F/25°C)

• Fluorescent lamp, illuminant 25:  15 – 30 min  Bond/lamp and lamp/ lamp spaced at approx. 10 cm and 20 cm, respectively  
• Superactinic UV-A . fluorescent lamp, e. g. Philips TL…/05: 10 – 15 min 
• Tanning studio UV-A . fluorescent lamp, e. g. Philips CLEO Performance: 10 –15 min
• Diffuse ambient lighting, illuminant 25: 1.5 – 3 hrs  
• Sunlight: 10 – 20 min  
• Pot life (at 200 g in a glass vessel exposed to diffuse ambient lighting): ~ 30 min (at 25 °C)

Properties of Bonds

• Further treatment of bonded parts: 2 to 6 hours after curing; sanding and polishing after 24 hours
• Tensile shear strength (v = 2 in/min):

Storage / Transport

Keep container tightly closed in a cool place protected against light.

Working Instructions

Preparing the parts to be bonded. Degrease the surfaces to be bonded with water containing a wetting agent (such as detergent), or with ACRIFIX® TC 0030. Internally stressed parts must be annealed before bonding in order to avoid stress cracking. The annealing conditions depend on the type of material, the degree of forming, and the thickness of the parts to be bonded. Parts made of extruded and injection-molded acrylic should be annealed as a matter of principle. Typical annealing times – also for cast acrylic – are 2 to 4 hours in the air. or oven at 158-176°F (70-80°C). If annealing is not possible, we recommend the use of ACRIFIX® 1S 2105 (only for commercial use). This assumes the surfaces to be bonded are at and without V-grooves or superimposed layers.

Bonding Technique

Fix the parts to be bonded in the desired position (avoid shading) and apply suitable adhesive tape to the joint and to protect surrounding areas. Introduce ACRIFIX 1R 0192 into the joint either directly from the tube or by means of a glue dispenser or disposable syringe, avoiding bubble formation. Then expose the joined parts to a suitable light source (see Curing). For this, “ordinary” fluorescent lamps of illuminant type 25 are preferred since they provide optimal curing of ACRIFIX® 1R 0192 and require no special protective measures against UV radiation at the workplace.

Other Measures

Roughening-up with abrasive paper (grit 230 to 320) improves the adhesion to untreated surfaces of cast acrylic. Severely stressed bonds or those intended for outdoor exposure should be annealed for 2 to 4 hours at 158-176°F (70-80°C) immediately after curing. ACRIFIX® 1R 0192 must not get into closed cavities (e.g. double glazing, tube interiors), since the curing process is severely hampered at such sites, and there is a risk of stress cracking in the bonded parts.

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 a thickness (minimum of two hours). For example, a 6.0 mm (0.236”) sheet would be annealed for six hours.

Safety Measures and Health Protection

Contains methyl methacrylate. Irritating to respiratory system and skin. Sensitization by skin contact possible. Keep away from sources of ignition and do not smoke. Avoid contact with skin. Wear suitable protective gloves.