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Rimpex Rubber introduces Kumho NBR, Nitrile Butadiene Rubber.
Standard
of Test Item |
KNB |
KNB 25M |
KNB 25LH |
KNB 25H |
KNB 25SH |
KNB 35LL |
KNB 35L |
KNB 35LM |
KNB 35M |
KNB 35H |
KNB 40M |
KNB 40H |
KNB 0230 |
KNB 0230L |
Bound AN
(%) |
28 |
34
|
41 |
35 |
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Raw MV(ML1+4, 100℃) |
50 |
60 |
70 |
80 |
100 |
33 |
41 |
50 |
60 |
80 |
60 |
80 |
56 |
42 |
Specific
Gravity |
0.96 |
0.98
|
1.00 |
0.98
|
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Compound
Properites*1) |
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Compound
MV (ML1+4, 100℃) |
73 |
90 |
101 |
114 |
140 |
54 |
66 |
78 |
90 |
110 |
92 |
113 |
60 |
64 |
Rheometer(160℃, ARC±1) |
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ML(1bf.in)
|
14.1 |
15.7 |
18.0 |
21.0 |
23.5 |
9.7 |
10.4 |
11.9 |
15.5 |
16.5 |
11.5 |
13.9 |
11.6 |
10.9 |
MH(1bf.in) |
40.4 |
41.0 |
42.0 |
43.5 |
45.5 |
38.9 |
40.2 |
41.4 |
44.0 |
46.3 |
41.9 |
45.1 |
43.2 |
42.7 |
Ts1(min)
|
3.0 |
2.9 |
3.3 |
3.0 |
3.0 |
3.8 |
3.1 |
2.2 |
2.0 |
2.2 |
2.3 |
2.7 |
2.3 |
2.6 |
T'50(min)
|
4.7 |
4.3 |
4.9 |
4.7 |
4.8 |
6.0 |
5.2 |
4.2 |
4.2 |
4.0 |
6.6 |
6.2 |
3.8 |
4.0 |
T'90(min) |
17.0 |
16.9 |
16.0 |
15.6 |
16.5 |
16.9 |
16.3 |
15.3 |
16.3 |
16.1 |
19.6 |
20.1 |
12.9 |
12.4 |
Vulcanization
Properties*2) |
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300% Modulus
(kgf/cm2) |
140 |
155 |
168 |
175 |
185 |
132 |
141 |
148 |
153 |
168 |
160 |
170 |
160 |
150 |
Tensile
Strength (kgf/cm2) |
275 |
285 |
285 |
285 |
290 |
300 |
310 |
313 |
327 |
334 |
345 |
360 |
300 |
295 |
Elongation(%) |
510 |
480 |
440 |
440 |
310 |
570 |
550 |
530 |
520 |
500 |
560 |
540 |
500 |
510 |
Hardness(Shore-A) |
73 |
73 |
73 |
73 |
73 |
74 |
74 |
74 |
74 |
74 |
75 |
75 |
74 |
74 |
ASTM #1
Oil Immersion Change*3) |
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300% Modulus(%)
|
23 |
22 |
24 |
24 |
25 |
42 |
35 |
39 |
40 |
43 |
45 |
47 |
40 |
38 |
Tensile
Strength(%) |
-7 |
-8 |
-8 |
-10 |
-13 |
-8 |
-13 |
-6 |
-6 |
-4 |
-1 |
-1 |
-3 |
-3 |
Elongation(%)
|
-20 |
-20 |
-23 |
-18 |
-21 |
-29 |
-28 |
-23 |
-21 |
-20 |
-26 |
-29 |
-25 |
-24 |
Hardness(Change) |
-4 |
-4 |
-4 |
-3 |
-3 |
0 |
0 |
0 |
-1 |
0 |
4 |
4 |
-1 |
-1 |
Volume(Change%) |
2 |
2 |
2 |
3 |
1 |
-1 |
0 |
0 |
0 |
0 |
0 |
-1 |
0 |
0 |
*1)
NBR 100, ZnO 3, Stearic Acid 1, HAF Black (IRB#7) 40, Accelerator TBBS
0.7, Sulfur 1.5, Total : 146.2
*2) 150℃×40 Min. Press Vulcanization *3) 100℃×70hrs, Change Rate |
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