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[ subject:"Plastics Technology." ]
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Short screw designs for the MuCell p...
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Cardona, Juan.
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Short screw designs for the MuCell process.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Short screw designs for the MuCell process./
作者:
Cardona, Juan.
面頁冊數:
128 p.
附註:
Source: Masters Abstracts International, Volume: 42-05, page: 1869.
Contained By:
Masters Abstracts International42-05.
標題:
Plastics Technology. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1419234
Short screw designs for the MuCell process.
Cardona, Juan.
Short screw designs for the MuCell process.
- 128 p.
Source: Masters Abstracts International, Volume: 42-05, page: 1869.
Thesis (M.S.Eng.)--University of Massachusetts Lowell, 2004.
A shorter than standard plasticating screw has been developed and tested for the MuCell injection molding process technology, to process a wide variety of materials and applications. The fundamental function of a MuCell screw (reciprocating type), is that in addition to performing the standard functions of a conventional injection molding screw (feeding, melting and metering), it also has to incorporate the additional functions required to properly mix the physical blowing agent with the molten polymer to form a single-phase solution. The single-phase solution, a homogeneous dispersion of blowing agent dissolved into the polymer melt, is the precursor to a microcellular foam structure.Subjects--Topical Terms:
1023683
Plastics Technology.
Short screw designs for the MuCell process.
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Short screw designs for the MuCell process.
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128 p.
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Source: Masters Abstracts International, Volume: 42-05, page: 1869.
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Supervisor: Francis Lai.
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Thesis (M.S.Eng.)--University of Massachusetts Lowell, 2004.
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A shorter than standard plasticating screw has been developed and tested for the MuCell injection molding process technology, to process a wide variety of materials and applications. The fundamental function of a MuCell screw (reciprocating type), is that in addition to performing the standard functions of a conventional injection molding screw (feeding, melting and metering), it also has to incorporate the additional functions required to properly mix the physical blowing agent with the molten polymer to form a single-phase solution. The single-phase solution, a homogeneous dispersion of blowing agent dissolved into the polymer melt, is the precursor to a microcellular foam structure.
520
$a
The additional functions needed to create the single-phase solution require that the screw be significantly longer than that of the standard length to diameter ratio screws. Historically, this plastic process technology requires a screw with a flighted length to diameter ratio (L/D) of 28:1. The commercial implementation of such long screw represents its most significant disadvantage. That is a very expensive customized molding machine with a special frame length must be used. The objective of this work was to design and thoroughly test a shorter MuCell screw that can be fitted on a standard size machine platform. This shorter more compact design must be capable of performing at the same level or better than the current commercially proven design.
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http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1419234
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