Effect of thermal gradient field with phase change on crystal morphologies of HDPE during GAIM process

Abstract

To understand the effects of thermal gradient field with phase change on the crystal morphologies of high density polyethylene (HDPE) during gas assisted injection moulding (GAIM) process, the combination of the simulation of the temperature field via an enthalpy transformation method and the hierarchical structures and the crystalline morphology of HDPE were investigated in this work. The GAIM parts of HDPE 6098 can be grouped into four layers in the direction of thickness: skin layer, subskin layer, intermediate layer and core layer. Besides, the cooling logarithmic curves were adopted in this experiment, and it is found that they can clearly display the phase change plateaus even at the skin layer zone.

Keywords

GAS ASSISTED INJECTION MOULDING PHASE CHANGE TRANSITION TEMPERATURE FIELD MORPHOLOGIES

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References

Suresh

and David

: Plast. Eng ., 1991, 10, 21–26.

Avery

: ‘Gas-assist injection molding’; 2001, Munich, Hanser.

Liang

: Macromolecule , 1996, 4, 226–233.

Chen

S. C.

, Hu

S. Y.

and Chao

S. M.

: Polym. Eng. Sci, 2000, 40, 595–606.

Haberstroh

and Wehr

: Macromot Mater. Eng ., 2000, 284, 76–80.

Zhou

H. M.

and Li

D. Q.

: J. Appl. Polym. Sci, 2003, 90, 2377-2384.

Marcilla

, Odjo Omoniyi

, Ruiz Femenia

and Garcia Quesada

J. C.

: J. Mater. Process. Technol , 2006, 178, 350–357.

Liu

S. J.

and Wu

Y. C.

: Polym. Test ., 2007, 26, 232–242.

Shen

Y. K.

, Jian

H. M.

W. Y.

and Yang

S. Y.

: Int. Commun. Heat Mass Transfer , 2001, 28, 139–148.

10.

Johnson

, Olley

and Coates

P. D.

: Plast Rubber Compos ., 2000, 29, 31–37.

11.

C. T.

and Isayev

A. I.

: Polym. Eng. Sci, 2004, 44, 983–991.

12.

Yang

S. Y.

, Lin

C. T.

and Chang

J. H.

: Adv. Polym. Technol , 2003, 22, 225–237.

13.

Chen

S. C.

, Cheng

N. T.

and Hu

S. Y.

: J. Appl. Polym. Sci, 1998, 67, 1553-1564.

14.

Chau

S. Y.

: Polym. Eng. Sci, 2008, 48, 1801-1814.

15.

Chen

S. C.

, Hu

S. Y.

, Chao

S. M.

and Chien

R. D.

: Polym. Eng. Sci, 2000, 40, 595–606.

16.

Chang

Y. P.

, Hu

S. Y.

and Chen

S. C.

: Int. Commun. Heat Mass Transfer , 1998, 25, 989–998.

17.

Zheng

G. Q.

, Yang

M. B.

, Chen

J. B.

, Li

and Shen

C. Y.

: Polym. Eng. Sci, 2008, 48, 976–986.

18.

Zheng

G. Q.

, Huang

, Yang

M. B.

, Liu

C. T.

and Shen

C. Y.

: Polymer , 2007, 48, 5486–5492.

19.

Zheng

G. Q.

, Yang

, Yin

, Yang

M. B.

, Liu

C. T.

and Shen

C. Y.

: J. Appl. Polym. Sci, 2006, 102, 3069-3077.

20.

Zheng

G. Q.

, Yang

, Liu

C. T.

, Shen

C. Y.

and Yang

M. B.

: Mater. Lett ., 2007, 61, 3436–3439.

21.

Huang

, Yang

M. B.

and An

H. N.

: Polymer , 2008, 49, 4051–4056.

22.

Huang

, Zheng

G. Q.

, Yang

, Yan

M. B.

, Li

and Shen

C. Y.

: Polym. Mater. Sci Eng ., 2007, 23, 198–201.

23.

Yang

, Fu

X. R.

, Yang

, Liang

S. P.

, Sun

, Hu

and Yang

M. B.

: MacromoL Mater. Eng ., 2009, 294, 336–344.

24.

Cao

, Faghri

and Chang

W. S.

: Int. J. Heat Mass Transfer , 1989, 32, 1289–1298.

25.

Yang

, Fu

X. R.

, Yang

, Huang

, Yang

M. B.

and Feng

J. M.

: Polym. Eng. Sci, 2008, 48, 1707-1717.

26.

Yang

, Fu

X. R.

, Yang

, Liang

S. P.

, Hu

and Yang

M. B.

: Polym. Eng. Sci, 2009, 49, 1234-1242.

27.

Patankar

S. V.

: ‘Numerical heat transfer and fluid flow’; 1980, New York, McGraw-Hill.

28.

Tao

S. P.

, Fu

X. R.

, Yang

M. B.

and Yu

R. Z.

: Acta Polym. Sin ., 2005, 1, 8–13.

29.

Crowley

A. B.

: Int. J. Heat Mass Trans ., 1978, 21, 215–219.

30.

Carrubba

V. L.

, Gabriëlse

and Piccarolo

: Macromot Mater. Eng ., 2005, 290, 1056–1062.

31.

Ogino

, Fukushima

, Matsuba

, Takahashi

, Nishida

and Kanaya

: Polymer , 2006, 47, 5669–5677.

32.

de Gennes

: J. Phys. Chem ., 1974, 60, 5030–5042.