Common mould pressing rubber

1. 
   

    

   	JF-1520	JF-1530	JF-1540	JF-1550	JF-1560	JF-1570	JF-1580
   Appearance	translucent, without obvious mechanical impurities
   Density, g/cm3	1.08±0.05	1.11±0.05	1.13±0.05	1.15±0.05	1.18±0.05	1.21±0.05	1.25±0.05
   Hardness, Shore A	20±3	30±3	40±3	50±3	60±3	70±3	80±3
   Tensile strength, MPa≥	5.5	6.5	7.0	7.5	7.5	6.8	6.0
   Elongation at failure, %≥	900	800	600	320	280	220	150
   Permanent set at break, %≤	12	8	6	5	5	5	4
   Tear strength, kN/m≥	13	16	20	22	22	22	16

   Physical and mechanical performance indexes are Once vulcanization data, electrical property indexes are Secondary vulcanization data
   Once vulcanization condition for experimental sheet: 175℃×5min Secondary vulcanization condition: 200℃×3hr
   Vulcanizing agent: DHBP (active matter is 80%), dosage 0.7%