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Crystallization behavior during the gel spinning of ultra-high molecular weight polyethylene

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Summary

A computer simulation model was established to analyze the crystallization behavior during the gel spinning of semi-dilute solution of ultra-high molecular weight polyethylene in paraffin oil. A numerical calculation was carried out to predict the temperature and crystallinity profile within a filament. The effects of the fiber radius, cooling temperature, and spinning temperature on the cooling time were discussed for searching the optimum cooling condition during the spinning.

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Abbreviations

Cp :

heat capacity

O :

concentration of solution

\(\tilde k\) :

thermal conductivity

Qc :

heat of crystallization

r:

radial distance

R:

radius of fiber

to :

reference time

To :

spinning temperature

Tc :

cooling temperature

z:

axial distance

ϱ:

density

E *D :

ED/RTo

t* :

t/to

T *c :

Tc/To

δ *c :

QcCoAto/CppTo

ψ* :

ψT om /T 2o

r* :

r/R

T* :

T/To

To * m :

T om /To

δ r* :

\(\tilde kt_o /\rho CpR^2 \)

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Authors and Affiliations

  1. Polymer Processing Laboratory, Korea Advanced Institute of Science and Technology, Cheongryang, P. O. Box 131, Seoul, Korea

    Chul Rim Choe, Kyeong Hyeon Kim & Kwang Hee Lee

Authors
  1. Chul Rim Choe
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  2. Kyeong Hyeon Kim
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  3. Kwang Hee Lee
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Choe, C.R., Kim, K.H. & Lee, K.H. Crystallization behavior during the gel spinning of ultra-high molecular weight polyethylene. Polymer Bulletin 22, 293–298 (1989). https://doi.org/10.1007/BF00282855

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