Injection molding-induced morphology of thermoplastic polymer blends.: An article from: Polymer Engineering and Science
Book Details
Author(s)Gan-Ji Zhong, Zhong-Ming Li
PublisherThomson Gale
ISBN / ASINB000F3UB60
ISBN-13978B000F3UB61
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Thomson Gale on December 1, 2005. The length of the article is 7979 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: Various morphologies induced by injection molding are reviewed here. The structural hierarchy in the direction perpendicular to flow direction always appears in the injection-molded blends. The hierarchy involves three aspects: phase behavior hierarchy for the dispersed phase, crystalline or orientated structural hierarchy for the matrix, as well as hierarchy structure of co-continuous phase morphology. There are usually three layers in the injection-molded bars, i.e., the skin layer and the core region as well as the shear zone between them. The morphology of the dispersed phase is usually different between the skin zone (usually including shear zone) and the core region: deformed particles may exist in the skin layer, whereas spherical droplets in the core region. Moreover, the size of crystals usually increases with the increase of the distance to the surface due to the increase of crystallization time, and the orientation is often severe near the surface due to the high shear stress. Defects of the injection-molded parts, such as weldline and flow marks, are also reviewed. The dispersed phase morphology in the weldline region is significantly different from the region out of the weldline and the morphology of the flow marks is also different from the out-of-flow marks. POLYM. ENG. SCI., 45:1655-1665, 2005. [c] 2005 Society of Plastics Engineers
Citation Details
Title: Injection molding-induced morphology of thermoplastic polymer blends.
Author: Gan-Ji Zhong
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: December 1, 2005
Publisher: Thomson Gale
Volume: 45 Issue: 12 Page: 1655(11)
Distributed by Thomson Gale
From the author: Various morphologies induced by injection molding are reviewed here. The structural hierarchy in the direction perpendicular to flow direction always appears in the injection-molded blends. The hierarchy involves three aspects: phase behavior hierarchy for the dispersed phase, crystalline or orientated structural hierarchy for the matrix, as well as hierarchy structure of co-continuous phase morphology. There are usually three layers in the injection-molded bars, i.e., the skin layer and the core region as well as the shear zone between them. The morphology of the dispersed phase is usually different between the skin zone (usually including shear zone) and the core region: deformed particles may exist in the skin layer, whereas spherical droplets in the core region. Moreover, the size of crystals usually increases with the increase of the distance to the surface due to the increase of crystallization time, and the orientation is often severe near the surface due to the high shear stress. Defects of the injection-molded parts, such as weldline and flow marks, are also reviewed. The dispersed phase morphology in the weldline region is significantly different from the region out of the weldline and the morphology of the flow marks is also different from the out-of-flow marks. POLYM. ENG. SCI., 45:1655-1665, 2005. [c] 2005 Society of Plastics Engineers
Citation Details
Title: Injection molding-induced morphology of thermoplastic polymer blends.
Author: Gan-Ji Zhong
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: December 1, 2005
Publisher: Thomson Gale
Volume: 45 Issue: 12 Page: 1655(11)
Distributed by Thomson Gale
