PARFIX ®   Cyanoacrylate Adhesives

PARFIX Cyanoacrylate adhesives offers a major advantage over other type of adhesive systems.
They are a single component adhesives, fast curing at room temperature, solvent free and resistant to many environmental factors.
Cyanoacrylates are based on a wide range of different acetates with the smallest molecule size being methyl followed by ethyl and then the larger size such as butyl etc.
In general the smaller the molecule the greater the overall strength and faster the speed of cure.
The main advantage of the higher molecular weight ester is less odor, reduced 'blooming' and slightly more flexibility.

1. How They Work
   
   
   • Cyanoacrylates are kept in their liquid form when in the bottle by the use of acidic stabilizer. Polymerization (solidification) in most cases takes place under the influence of trace moisture on the surface of the substrate. As the two surfaces are brought together the moisture on the surface helps to neutralize the acidic stabilizer, which results in fast adhesion. The curing mechanism can be affected by the following:
   • Ambient humidity is too low
   • High acidic levels on surface of substrate
   • Dirty surface
   • Correct cleaning and preparation of the surface is therefore vital for successful binding. Non-polar surfaces such as polypropylene are difficult to bond and require special preparation.
     
     In general a little goes a long way. One average size drop from our standard bottle will cover 2.5 cm. Using Cyanoacrylate adhesives only requires a small amount, the thinner the bond line the better the overall performance.
2. Advantages
   
   
   • One part adhesive
   • Solvent free
   • Fast curing at room temperature
   • High tensile shear strength
   • reduced material thickness, uniform loading over bond area
   • Resistant to a wide range of chemicals
   • Many different grades to suit various applications, from water thin to gels
   • Surpasses most other types of adhesives of for bonding rubbers.
   • Following are some of our most popular grades. We are also able to produce other materials including very high viscosity grades, toughened grades, high temperature grades, colored grades and low odor/low bloom grades.
   
   
   
3. PARFIX 3420
   
   
   • Extra low viscosity ethyl monomer 3-5 cps. Very fast curing, used as a 'wicking grade' due to its low viscosity. Applications are from fabric bonding to rubber bonding.
   • PARFIX 3406
     Low viscosity surface insensitive Cyanoacrylate 15-30 cps. Super fast grade for bonding difficult materials such as EPDM and materials that are slightly acidic by nature
   • PARFIX 3495
     Low Viscosity ethyl based 30-50 cps. Fast curing general-purpose grade, for closely fitted parts. Slightly thicker than a wicking grade. Bonds most materials including rubbers and metals.
   • PARFIX 3401
     Medium viscosity surface insensitive Cyanoacrylate 80-100 cps. This grade is formulated for bonding materials such as wood, cardboard, leather and cork.
   • PARFIX 3424
     Medium viscosity ethyl 100-120 cps. General purpose grade that is fast setting with very good performance on most materials including balsa wood, cork and most plastic and rubbers.
   • PARFIX 3416
     High viscosity ethyl 1200-1800 cps. A slightly slower curing grade to allow limited re-alignment of components. Will bond most rubbers, plastics, cork and wood. This grade will also allow a gap fill up to 0.2 mm.
   • PARFIX 3422
     High viscosity ethyl 2000-2500 cps. A slow curing grade allows time for realignment and slip fit. Applications include porous surfaces and wire tacking when used with an activator.
   • PARFIX 3409
     General-purpose ethyl based gel, with non-slump characteristics. Can be applied vertical surfaces. Will not run or drip. Will bond most materials from fabrics to wood. Fill gaps up to 0.25 mm.
   
   
   
4. PARFIX™ Cyanoacrylate Selection Chart
   
   

   Material to be Bonded	3420	3495	3406	3401	3424	3416	3422	3409
   Metal	*	*	*	*	*	**	*	*
   Rubbers	**	**	***	***	**	*	*	*
   Difficult Rubbers	*	*	***	**	**	*	*	*
   Woods	**	**	***	***	**	**	*	*
   Leather	*	*	**	***	**	*	*	**
   Fabrics	***	**	**	**	**	*	*	*
   Ceramics	*	*	*	**	**	***	***	**
   (*) Poor to reasonable performance (***) Recommended
   The above should use as guide, some grades perform better when used to bond different materials such as metal to rubber, other have better shelf life under difficult conditions.

   
   
   
5. PARFIX™ Cyanoacrylate Adhesives Specifications
   
   

   Grade	3420	3495	3406	3401	3424	3416	3422	3409
   Material Base	ethyl	ethyl	ethyl	ethyl	ethyl	ethyl	ethyl	ethyl
   Viscosity, cps	3	20	40	80	100	1500	2500	Thixo gel
   Appearance	clear	clear	clear	clear	clear	clear	clear	clear
   Gap Fill, mm	05	1	1	1	1	15	2	25
   Tensile Shear Strength* N/mm	15-26	16-26	15-26	15-26	18-26	17-26	17-26	15-26
   Full Cure	24 hours
   Melting Point	160°C - 170°C

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