1.Technical Indexes:

Term 1 : N220

Iodine Absorption No. (G/kg):121±5；

DBP Absorption No.(10-5m3/kg) : 114±5；

DBP Absorption No. of Compressed Sample (10-5m3/kg) :97 to 107；

CTAB Surface Area (1.3m2/kg) :  105 to 117；

Nitrogen Surface Area (1.3m2/kg) 114 to 124；

Tint Strength : 111% to 121%；

Heating Loss  2.5%max；

Ash:N220:   0.5%

Powder content:  N220:   10%max;

Pour density, kg/m 3: 355±40;

300% Extending stress, Mpa:  -2.3±1.0;    

Term 2: N330

Iodine Absorption No. (G/kg):    82±5；

DBP Absorption No.(10-5m3/kg) :  102±5；

DBP Absorption No. of Compressed Sample (10-5m3/kg) :83 to 93 ；

CTAB Surface Area (1.3m2/kg):   76 to 88；

Nitrogen Surface Area (1.3m2/kg):   73 to 83；

Tint Strength 99% to 109%

Heating Loss :   2.5%max；

Ash:   0.5%

Powder content::   10%max;

Pour density, kg/m 3:   380±40;     

300% Extending stress, Mpa:  -0.9±1.0      ;

Term 3 : N550

Iodine Absorption No. (G/kg):    43±5；

DBP Absorption No.(10-5m3/kg) :  121±5；

DBP Absorption No. of Compressed Sample (10-5m3/kg) : 80 to 90；

CTAB Surface Area (1.3m2/kg) :   37 to 44；

Nitrogen Surface Area (1.3m2/kg) :   36 to 44；

Heating Loss:  1.5%max

Ash N550:   0.5%

Powder content:   10%max;

Pour density, kg/m 3:          360±40;

300% Extending stress, Mpa:N550:  -0.9±1.0;

Terms 4 :  N660

Iodine Absorption No. (G/kg) :    36±5；

DBP Absorption No.(10-5m3/kg) :   90±5；

DBP Absorption No. of Compressed Sample (10-5m3/kg)  : 66 to 82

CTAB Surface Area (1.3m2/kg) :   29 to 43

Nitrogen Surface Area (1.3m2/kg) :   29 to 41

Heating Loss N660 :  1.5%max

Ash   0.5%

Powder content::   10%max

Pour density, kg/m 3: 440±40

300% Extending stress, Mpa:N660:  -2.6±1.0

2) Application:

Mainly applied to various rubber products such as tyres, rubber overshoes, cable, seal ring, tape etc.
 Moreover they can be applied to such relevant industries as plastic manufacture.