94 



PAINT TECHNOLOGY AND TESTS 



AN EXHIBITION OF CERTAIN ANALOGIES GOVERNING THE MANUFAC- 

 TURE OF CONCRETE AND OF PAINT 



1 Concrete aggregate = solids + vehicle 



2 Solids = coarse + medium + fine 



(stone) (gravel) (sand) 



3 Vehicle = 



= reactive binder + evapor g thinner 

 ( cement and com- ) (excess water) 

 \ bining water J 



4 Solids + compacting = 



(tamping) 



= elimination of accidental voids 4- 

 4- proper adhesive contact 



5 Vehicle + reaction = hydrosilicates, etc. 



(setting) 



6 Solids 4- vehicle + 



4- lubrication + chemical reaction = 

 = final product ( solidified binder 4" j 

 ( 4- solids) 



7 Final product = concrete 



f shearing 

 (of max. strength | tensile 



I crushing, etc. 



(fume) 



Paint aggregate = solids + vehicle 

 Solids = coarse + medium + fine 



(pulverized ) ( precip- 1 

 cryst'lline \ (Stated ] 

 (etc.) j 



Vehicle = 



= reactive binder + evaporating thinner 

 (linseed oil) (volatiles) 



Solids + compacting = 



(brushing) 



= elimination of accidental voids + 

 4- proper adhesive contact 

 Vehicle + reaction = linoxyn 



(drying) 

 Solids + vehicle + 



+ lubrication + chemical reaction = 

 = final product ( solidified binder + 1 

 ( + solids ) 



Final product = paint coating 



[ strength 

 (of maximum \ impermeability 



I durability 



If we assume for both paint and concrete 



proper lubrication 



proper proportion of vehicle and solids 

 Then the essential difference between a thin film of 



Concrete 



Cement Binder 



and 

 is 



Paint 



Linoxyn Binder 



Disadvantages 



Non-elastic and hence an impracticable 

 binder for a film to protect non-similar struc- 

 tural surfaces. 



Slowly perishable from oxidation by the 

 air. 



Durable and with the qualities of a 

 natural mineral. 



Advantages 



Semi-elastic and therefore a practi- 

 cable binder for a film to protect struc- 

 tural surfaces. 



Postulate (def. Webster's Dictionary A self-evident problem) 



Postulate No. 1 The organic linoxyn or semi-elastic binder of the paint vehicle (unlike the 

 cement binder) is perishable and its purity, strength and protection 

 from attack means life to the paint coating, and hence the life of the 

 . oil is the life of the paint. 



Postulate No. 2 The inorganic or powdered mineral solids of a paint coating will crumble 

 unless held together by the binder, but the imperishable pigments must 

 be so ground and blended in the binder that they will protect the binder 

 and present the greatest possible solid front to the atmospheric attack. 



A paint, to secure the greatest protection and life for the linoxyn, together with the durable 

 qualities of cement, 



Therefore 

 Should expose to air decay 



within limits of physical strength 



The greatest amount of pigm't material 



(which is) 



Durable and with the inert qualities of 

 natural mineral 



within limits required for elasticity, etc. 

 The least amount of exposed linoxyn 



or 



Considering the linoxyn present between 

 pigment particles as the void or point of 

 attack, 



Then 

 the minimum exposure of linoxyn 



or minimum voids obtainable by proportioned pigments of different particle sizes. 



