Diacetone acrylamide(DAAM)
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As a high-tech fiber featuring high strength, high modulus, low density and good wear resistance, Aramid is known as one of the world's four major high-tech fibers (carbon fiber, aramid fiber, high-strength high-modulus polyethylene fiber, basalt fiber). Para-aramid (PPTA), a country called aramid 1414
High strength - The tensile strength is 6 times that of steel wire
High modulus - The tensile modulus is 2-3 times that of steel wire and glass fiber; The density is only 1/5 of steel wire;
High temperature resistance -Thermal decomposition 550℃, long-term use at 220℃
Strong toughness - Soft without brittleness, strong impact resistance
Flame retardant - Good self-extinguishing, high oxygen index
Chemical resistance - Good corrosion resistance and rupture resistance
Chemical resistance - Good corrosion resistance and rupture resistance
Low thermal conductivity, small temperature coefficient, high dimensional stability and low density
Table 1 Technical index of para-aramid yarn:
Index
|
Unit
|
063T
|
063Y
|
063L
|
063H
|
063D
|
Breaking strength
|
cN/dtex |
≥20.2≥ |
≥18≥ |
≥14≥ |
≥12≥ |
≥10≥ |
Elongation at break
|
% |
3.5±0.8 |
3.5±0.8 |
3.5±0.8 |
3.5±0.8 |
3.5±0.8 |
Initial modulus
|
GPa |
85±20
|
85±30
|
70±30
|
70±30
|
70±30
|
Oil content
|
% |
M±0.5
|
||||
Dry heat shrinkage
|
%
|
≤0.2
|
||||
(1)M value is confirmed by both the supplier and the buyer; (2)1CN/DTEX=0.144GPA. |
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