Studies of melt flow properties during capillary extrusion of polycarbonate

J. Z. Liang; Chak Yin Tang

doi:10.1016/S0924-0136(96)02672-6

Studies of melt flow properties during capillary extrusion of polycarbonate

J. Z. Liang, Chak Yin Tang

Research output: Journal article publication › Journal article › Academic research › peer-review

6 Citations (Scopus)

Abstract

Under temperatures of 100°C ∼ 310°C and apparent shear rates of 60s-1∼ 1000s-1, the melt flow properties and their effects on the extrusion of two different types of polycarbonate (PC) resins are studied using a capillary rheometer. The results indicate that the shear flow property of the melts follows the Newtonian flow law. Under the same extrusion conditions, the end effect caused by the higher molecular weight (Mw) melt is relatively more significant than that of the lower Mwmelt. On the other hand, the viscosity of the lower Mwmelt is comparatively more sensitive to temperature change. On the basis of the experimental results, a mathematical model that describes the relationship between the shear viscosity and the temperature of PC is proposed. Thus, this model can be used as a practical tool for the injection moulding of PC resin.

Original language	English
Pages (from-to)	501-504
Number of pages	4
Journal	Journal of Materials Processing Technology
Volume	63
Issue number	1-3
DOIs	https://doi.org/10.1016/S0924-0136(96)02672-6
Publication status	Published - 1 Jan 1997

ASJC Scopus subject areas

Ceramics and Composites
Computer Science Applications
Metals and Alloys
Industrial and Manufacturing Engineering

More information

10.1016/S0924-0136(96)02672-6

Cite this

@article{7dbbef4f505b474891f4466fccf136e2,

title = "Studies of melt flow properties during capillary extrusion of polycarbonate",

abstract = "Under temperatures of 100°C ∼ 310°C and apparent shear rates of 60s-1∼ 1000s-1, the melt flow properties and their effects on the extrusion of two different types of polycarbonate (PC) resins are studied using a capillary rheometer. The results indicate that the shear flow property of the melts follows the Newtonian flow law. Under the same extrusion conditions, the end effect caused by the higher molecular weight (Mw) melt is relatively more significant than that of the lower Mwmelt. On the other hand, the viscosity of the lower Mwmelt is comparatively more sensitive to temperature change. On the basis of the experimental results, a mathematical model that describes the relationship between the shear viscosity and the temperature of PC is proposed. Thus, this model can be used as a practical tool for the injection moulding of PC resin.",

author = "Liang, {J. Z.} and Tang, {Chak Yin}",

year = "1997",

month = jan,

day = "1",

doi = "10.1016/S0924-0136(96)02672-6",

language = "English",

volume = "63",

pages = "501--504",

journal = "Journal of Materials Processing Technology",

issn = "0924-0136",

publisher = "Elsevier BV",

number = "1-3",

}

TY - JOUR

T1 - Studies of melt flow properties during capillary extrusion of polycarbonate

AU - Liang, J. Z.

AU - Tang, Chak Yin

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Under temperatures of 100°C ∼ 310°C and apparent shear rates of 60s-1∼ 1000s-1, the melt flow properties and their effects on the extrusion of two different types of polycarbonate (PC) resins are studied using a capillary rheometer. The results indicate that the shear flow property of the melts follows the Newtonian flow law. Under the same extrusion conditions, the end effect caused by the higher molecular weight (Mw) melt is relatively more significant than that of the lower Mwmelt. On the other hand, the viscosity of the lower Mwmelt is comparatively more sensitive to temperature change. On the basis of the experimental results, a mathematical model that describes the relationship between the shear viscosity and the temperature of PC is proposed. Thus, this model can be used as a practical tool for the injection moulding of PC resin.

AB - Under temperatures of 100°C ∼ 310°C and apparent shear rates of 60s-1∼ 1000s-1, the melt flow properties and their effects on the extrusion of two different types of polycarbonate (PC) resins are studied using a capillary rheometer. The results indicate that the shear flow property of the melts follows the Newtonian flow law. Under the same extrusion conditions, the end effect caused by the higher molecular weight (Mw) melt is relatively more significant than that of the lower Mwmelt. On the other hand, the viscosity of the lower Mwmelt is comparatively more sensitive to temperature change. On the basis of the experimental results, a mathematical model that describes the relationship between the shear viscosity and the temperature of PC is proposed. Thus, this model can be used as a practical tool for the injection moulding of PC resin.

UR - http://www.scopus.com/inward/record.url?scp=0030733986&partnerID=8YFLogxK

U2 - 10.1016/S0924-0136(96)02672-6

DO - 10.1016/S0924-0136(96)02672-6

M3 - Journal article

SN - 0924-0136

VL - 63

SP - 501

EP - 504

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

IS - 1-3

ER -

Studies of melt flow properties during capillary extrusion of polycarbonate

Abstract

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this