LOCTITE 495 general purpose cyanoacrylate instant adhesive

LOCTITE 495 general purpose cyanoacrylate instant adhesive

LOCTITE® 495 is a general purpose cyanoacrylate instant adhesive. TYPICAL PROPERTIES OF UNCURED MATERIAL Specific Gravity @ 25 °C 1.05 Viscosity, Cone & Plate, mPa·s (cP): Temperature: 25 °C, Shear Rate: 3,000 s -1 20 to 45LMS Viscosity, Brookfield – LVF, 25 °C, mPa·s (cP): Spindle 1, speed 30 rpm 20 to 60 Vapour Pressure, hPa <1 Flash Point – See MSDS TYPICAL CURING PERFORMANCE Under normal conditions, the atmospheric moisture initiates the curing process. Although full functional strength is developed in a relatively short time, curing continues for at least 24 hours before full chemical/solvent resistance is developed. Cure Speed vs. Substrate The rate of cure will depend on the substrate used. The table below shows the fixture time achieved on different materials at 22 °C / 50 % relative humidity. This is defined as the time to develop a shear strength of 0.1 N/mm². Fixture Time, ISO 4587, seconds: Mild Steel (degreased) 10 to 30 Aluminum (degreased) 5 to 15 Zinc Dichromate 30 to 90 Neoprene <5 Rubber, Nitrile <5 ABS 10 to 30 PVC 3 to 10 Polycarbonate 20 to 60 Phenolic 5 to 20 Cure Speed vs. Bond Gap The rate of cure will depend on the bondline gap. Thin bond lines result in high cure speeds, increasing the bond gap will decrease the rate of cure. Cure Speed vs. Humidity The rate of cure will depend on the ambient relative humidity. The following graph shows the tensile strength developed with time on Buna N rubber at different levels of humidity.