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belstaff italia 硼,烷基&#3

 
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PostPosted: Thu 5:21, 31 Mar 2011    Post subject: belstaff italia 硼,烷基&#3
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硼,烷基酚双民入性酚醛树脂的合成及耐热性分析
508．1／76．8495．0／73．6Ⅱ460．0／7o．6503．3／77．9525．0／78．9491．3／79．6496．777．4Ⅲ555．0／83．9500．0／72．4456．7／76．7503．3／79．0极差95．0／13—316．6／9．568．3／2．211．6／6．03结论本实验合成了一种新型的酚醛树脂，其耐热性优于通用的酚醛树脂，在适宜条件下可达到硼酚醛的耐热性等级。在改性成分中,[link widoczny dla zalogowanych]，烷基酚是影响此双改性酚醛树脂耐热性的主要因素，其量越多，则树脂耐热性越差。而硼酸并非加入越多,[link widoczny dla zalogowanych]，耐热性越好,[link widoczny dla zalogowanych]。其有一适宜值，约为o．15mol左右,[link widoczny dla zalogowanych]。并且，在一定范围内，硼酸与烷基酚之间有相互作用。”盼基嘲／mI围2凝胺化时间随烷基酚的壹化情况42北京联台大学学报1997年6月
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