Aramid fiber modification method
A kind of aramid fiber and aramid chopped fiber technology, which can be used in fiber raw material processing, synthetic cellulose/non-cellulose material pulp/paper, textiles and paper making, etc. problems, to achieve the effects of excellent temperature resistance, high aspect ratio, and reduced production costs
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Embodiment 1
[0033] A method for modifying aramid fibers, using the blending of aramid nanofiber / dimethyl sulfoxide dispersion and aramid chopped fiber / water dispersion to realize in-situ protonation reduction and compounding of aramid nanofibers to prepare aramid fibers Aramid composite fiber covered by nanofiber network; wherein the mass ratio of aramid nanofiber to aramid fiber is 10:90.
[0034] A method for modifying aramid fibers, comprising the steps of:
[0035] Step 1: Prepare aramid chopped fiber / water dispersion: take a certain quality of meta-aramid chopped fiber and one of para-aramid chopped fiber and disperse it in water, stir and disperse it through a standard fiber deflagging machine for 15000r, Obtaining a chopped fiber slurry with a mass concentration of 1.5%;
[0036] Step 2: Prepare aramid nanofiber / dimethyl sulfoxide dispersion: take the recovered para-aramid cloth as raw material in potassium hydroxide / dimethyl sulfoxide / water (KOH / DMSO / H 2 O) a deprotonation react...
Embodiment 2
[0040] A method for modifying aramid fibers, using the blending of aramid nanofiber / dimethyl sulfoxide dispersion and aramid chopped fiber / water dispersion to realize in-situ protonation reduction and compounding of aramid nanofibers to prepare aramid fibers An aramid composite fiber covered by a nanofiber network; wherein the mass ratio of the aramid nanofiber to the aramid fiber is 20:80.
[0041] A method for modifying aramid fibers, comprising the steps of:
[0042] Step 1: Prepare aramid chopped fiber / water dispersion: take a certain quality of meta-aramid chopped fiber and one of para-aramid chopped fiber and disperse it in water, stir and disperse it through a standard fiber deflagging machine for 15000r, Obtaining a chopped fiber slurry with a mass concentration of 1.2%;
[0043] Step 2: Prepare aramid nanofiber / dimethyl sulfoxide dispersion: take the recycled para-aramid waste silk as raw material in potassium hydroxide / dimethyl sulfoxide / water (KOH / DMSO / H 2 O) a de...
Embodiment 3
[0047] A method for modifying aramid fibers, using the blending of aramid nanofiber / dimethyl sulfoxide dispersion and aramid chopped fiber / water dispersion to realize in-situ protonation reduction and compounding of aramid nanofibers to prepare aramid nanofibers Aramid composite fibers covered by fiber network; wherein the mass ratio of aramid nanofibers to aramid fibers is 30:70.
[0048] A method for modifying aramid fibers, comprising the steps of:
[0049] Step 1: Prepare aramid chopped fiber / water dispersion: take a certain quality of meta-aramid chopped fiber and one of para-aramid chopped fiber and disperse it in water, stir and disperse it through a standard fiber deflagging machine for 15000r, Obtaining a chopped fiber slurry with a mass concentration of 1.0%;
[0050] Step 2: Prepare aramid nanofiber / dimethyl sulfoxide dispersion: take the recycled para-aramid yarn waste as raw material in potassium hydroxide / dimethyl sulfoxide / water (KOH / DMSO / H 2 O) a deprotonatio...
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