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vaccum casting clear parts

Jun 17,21

vaccum casting clear parts vaccum casting

Adhibition
VACUUM INJECTION POLYURETHANE RESIN FOR MAKING HIGH TEMPERATURE RESISTANT PROTOTYPE PARTS
Characteristic
Good refractory
 •simplicity of operator
Easy coloring •High replication accuracy
 
physical performance
ingredient  UP 6160-LSPOLYOL UP 6160-LISOCYANATE MDS
polyhydric alcohols isocyanate
重量混合比 100 200  
appearance liquid state liquid state liquid state
colour faint yellow colourless faint yellow
appearance liquid state liquid state liquid state
Brockfield has a viscosity of 23℃(mPa.s) 300-400 200-300 200-300
Density is zero before mixing 25℃ (g/cm)After curing, the density is at 23℃ (g/cm3) 0.96-1.01 1.20-1.23 1.2
operable time (100g)于20-25℃ (minute     6.8

operational process(Use a vacuum casting machine

>Weigh the two components according to the ratioPlace the isocyanate component in the top cup;

>After 5-10 minutes of defoaming in vacuum injection machinePour the isocyanate into the polyol and stir for 1 minute.
 >After stirring, tilt the cup and defoaming for 1-2 minutes;
>Put stingy, pour the material into the preheated 50-60° C silicone mold;
>Put the mold into the oven at 70° C to cure for 60 minutes and then release the mold.
Mechanical properties - at 23 ° C (1)
hardness Shore D 80-81
Modulus of elasticity in bending MPa 2100-2200
Bending strength MPa 108- 128
tensile strength MPa 59-69
And elongation at fracture % 15-16
Impact strength (1ZOD) notch specimen J/M 34-44

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