国内外铸造用淀粉粘结剂的研究概况和发展趋势

Surveyand Tendency of Study on Starch Binders for Foundryat Homeand Abroad

回顾总结了铸造用淀粉粘结剂的研究概况 ,认为国内外铸造工业中开发使用的改性淀粉 80 %左右是酸解、氧化、预糊化淀粉等低档次产品 ;铸造用淀粉粘结剂的研究今后应侧重其改性和复配 ,而关键因素是改性淀粉或以淀粉为主的复合粘结剂的粘结强度、成本及合成工艺是否简单等问题。由于改性淀粉的可再生、无污染及可衍生物化反应 (在淀粉分子中引入可与淀粉羟基反应的其他极性官能团 )等特性 。

Asurveyofstudyonstarchbindersforfoundrywasmade .Itwasthoughtthatabout 80 %ofmodifiedstarchbindersforfoundryathomeandabroadwereacidolysisstarch ,oxidizedstarchandpre heatingstarchetcetera .Theseproductswereprovidedwithlowbindingstrengthandnarrowrangeofap plication .Studyonstarchbindersforfoundryinfutureshouldbefocalizedattheirmodificationortheircompoundapplicationwithotherbinders .Thekeytothequestionlayinbindingstrength ,costandsyn thetictechnologyofmodifiedstarchbinderorstarchcompositebinder .Itwaspossiblethatmodifiedstarchwasusedforfoundryasamaincompositionofstarchcompositebinderbecauseofitscharacteris ticsofreclamation ,nopollution ,derivativenessandsoon .