Rare earth stearates as thermal stabilizers for rigid poly(vinyl chloride) - Details

author：

Zheng, Y. (Zheng, Y..) ^[1] | Cai, W. (Cai, W..) ^[2] | Fu, M. (Fu, M..) ^[3] | Wang, C. (Wang, C..) ^[4] | Zhang, X. (Zhang, X..) ^[5]

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Abstract：

A　series　of　stearates　with　different　rare-earth　ion　were　investigated　as　thermal　stabilizers　for　rigid　PVC　at　180　t　in　air.　Their　stabilizing　efficiency　was　based　on　measuring　the　rate　of　dehydrochlorination.　The　resulted　revealed　the　higher　stabilizing　efficiency　of　the　investigated　rare-earth　stearates　as　thermal　stabilizers　for　rigid　PVC　compared　with　the　thermal　stabilizers　for　industry:　calcium　stearate,　zinc　stearate,　butyl　stannum　mercaptide,　phosphite　esters,　β-diketone　and　epoxidized　sunflower　oil.　This　was　well　illustrated　by　longer　incubation　period　(TS)　values　and　lower　rate　of　dehydrochlorination.　The　stable　efficiency　was　affected　by　the　nature　of　rare-earth　element＇s　individual　electronic　shell.　The　mechanism　for　the　stabilizing　effect　of　rare-earth　stearates　was　proposed.　The　result　was　experimentally　proved　based　on　IR　spectrum.

Keyword：

Conductivity method; Congo red test; Poly(vinyl chloride); Rare-earth stearates; Stabilization mechanism; Thermal dehydrochlorination

Community：

[ 1 ] [Zheng, Y.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China
[ 2 ] [Cai, W.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China
[ 3 ] [Fu, M.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China
[ 4 ] [Wang, C.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China
[ 5 ] [Zhang, X.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China

Reprint 's Address：

[Zheng, Y.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China

Email：

yyzheng@fzu.edu.cn

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Source ：

Journal of Rare Earths

ISSN： 1002-0721

Year： 2005

Issue： 2

Volume： 23

Page： 172-177

0 . 2 4 9

JCR@2005

5 . 2 0 0

JCR@2023

JCR Journal Grade：4

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 2

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