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Manufacture of Flame Retardant Paper with Multiple-element Layered Double Hydroxides (LDHs) as Filler
  
DOI：10.11980/j.issn.0254-508X.2012.07.004
Key Words:LDHs  flame retardant  FR Paper  added in the pulp
Fund Project:国家自然科学基金（10972076）;湖南省科研条件创新专项重点项目（2010TT1003）;湖南省高校创新平台开放基金（10K019）。
Author NameAffiliation
刘跃军 湖南工业大学包装新材料与技术重点实验室，湖南株洲，412007 
郝宗贤 湖南工业大学包装新材料与技术重点实验室，湖南株洲，412007 
刘亦武 湖南工业大学包装新材料与技术重点实验室，湖南株洲，412007 
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Abstract:Two-element Mg-Al-CO2-3-LDHs, three-element Mg-Al-Zn-CO2-3-LDHs and four-element Mg-Al-Zn-Fe-CO2-3-LDHs were prepared through coprecipitation by using self-made reactor with MgCl2·6H2O、AlCl3·6H2O、 ZnCl2·6H2O、FeCl3·6H2O、Na2CO3 as raw material and were added into the pulp to prepared a series of neotype LDHs flame retardant (FR) papers. The LDHs were characterized with FT-IR and the mechanical properties and combustibility of the FR papers were tested. The results showed that the flame retardant property of the FR papers improved when multiple-element LDHs were added. The four-element Mg-Al-Zn-Fe-CO2-3-LDHs possessed better flame retardant capability than the three-element Mg-Al-Zn-CO2-3-LDHs, and the two-element Mg-Al- CO2-3-LDHs in turn. The IO of FR paper reached 25.3% with adding 30% three-element Mg-Al-Zn-CO2-3-LDHs and reached 25.0% when 25% four-element Mg-Al-Zn-Fe-CO2-3-LDHs was added. The FR papers met the demand of GB/T 14656—2009 with flaming lasted 5 s , glowing lasted 30 s and 95 mm of char when 30% four-element Mg-Al-Zn-Fe-CO2-3-LDHs was added.
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