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Aramid Yarn Business
We purchase the K29, K49 TYPE 1110 ~ 8050 DTEX manufactured by DUPONT, an American company. We remanufacture this, changing the sizes (length, weight, etc) as the cable manufacturers want.
Manufacturing Process
- Purchase DUPONT KEVLAR 1110~8050DTEX
- Join threads together (Example: 1670 DTEX 1 thread + 3220 DTEX 2 threads = 8050 DTEX: an approximate value)
- Twist yarn
- Pack up
- Distribute
* Monthly supplies available: 20TON
* Annual supplies available: 240TON
Specification
|
Denier |
Number of Filaments |
Yield yd/lb |
Yield m/kg |
|
55 |
25 |
81,175 |
163,636 |
|
195 |
90 |
22,895 |
46,155 |
|
195 |
134 |
22,895 |
46,155 |
|
200 |
134 |
22,320 |
44,997 |
|
380 |
180 |
11,749 |
23,684 |
|
380 |
267 |
11,749 |
23,648 |
|
400 |
267 |
11,160 |
22,500 |
|
720 |
490 |
6,200 |
12,500 |
|
750 |
490 |
5,952 |
12,000 |
|
840 |
534 |
5,314 |
10,714 |
|
1000 |
666 |
4,464 |
9,000 |
|
1140 |
768 |
3,916 |
7,895 |
|
1420 |
1000 |
3,144 |
6,338 |
|
1500 |
1000 |
2,976 |
6,000 |
|
2160 |
1000 |
2,097 |
4,228 |
|
2250 |
1000 |
1,984 |
4,000 |
|
2840 |
1333 |
1,572 |
3,169 |
|
2840 |
1000 |
1,572 |
3,169 |
|
3000 |
1333 |
1,488 |
3,000 |
|
4320 |
2000 |
1,048 |
2,110 |
|
4560 |
3072 |
979 |
1,974 |
|
6000 |
- |
744 |
1,500 |
|
7100 |
5000 |
630 |
1,268 |
|
8640 |
4000 |
524 |
1,057 |
|
10800 |
5000 |
413 |
833 |
|
11400 |
- |
391 |
789 |
|
15000 |
10000 |
298 |
600 |
|
Property |
Unit |
KEVLAR 29 |
KEVLAR 49 |
|
Yarn |
|
Type |
Denier(dtex) |
1,500(1,670) |
1,140(1,270) |
|
#of filaments |
1,000 |
768 |
|
Density |
lb/in.3(g/cm3 |
0.052(1.44) |
0.052(1.44) |
|
Moisture Levels As Shipped |
% |
7.0 |
3.5 |
|
Equilibrium from Bone-Dry Yarn |
% |
4.5 |
3.5 |
|
Tensile Properties Straight Test on conditioned yarns |
|
Breaking Strength |
lb(N) |
76.0(338) |
59.3(264) |
|
Beraking Tenacity |
g/d(cN/tex) |
23.0(203) |
23.63(208) |
|
psi(MPa) |
424,000(2,920) |
435,000(3,000) |
|
Tensile Modulus |
g/d(cN/tex) |
555(4,900) |
885(7,810) |
|
psi(MPa) |
10.2 x 104 |
16.3 x 104 |
|
Elongation at Break |
% |
3.6 |
2.4 |
|
Resin Impregnated Strands |
|
Tensile Strength |
psi(MPa) |
525,000(3,600) |
525,000(3,600) |
|
Tensile Modulus |
psi(MPa) |
12.0 x 104(83,000) |
18.0 x 104(124,000) |
|
Thermal Properties |
|
Shrinkage |
|
In Water at 212°F(100°C) |
% |
<0.1 |
<0.1 |
|
In Dry Air at 351°F(°C) |
% |
<0.1 |
<0.1 |
|
Shrinkage Tension |
|
In Dry Air at 351°F(177°C) |
G/D(cN/tex) |
<0.1(0.88) |
<0.2(1.77) |
|
Specific Heat |
|
At 77°F(25°C) |
cal/g x °C |
0.34(1,420) |
0.32(1,420) |
|
At 212°F(100°C) |
cal/g x °C |
0.48(2,010) |
0.48(2,010) |
|
At 356°F(180°C) |
cal/g x °C |
0.60(2,515) |
0.60(2,515) |
|
Thernal Conductivity. |
W/(m x K) |
0.3(0.04) |
0.3(0.04) |
|
Decomposition Temperature in Air |
°F(°C) |
800-900(427-482) |
800-900(427-482) |
|
Recommended max.
Temperature Range for long-Term Use in Air |
°F(°C) |
300-350(149-177) |
300-350(149-177) |
|
Heat of Combustion |
BTU/lb(Joule/kg) |
15,000(35 x 104) |
15,000(35 x 104) |
|
Roisson's Ratio |
|
|
0.36 |
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