CAJ | 학술논문

以3-（3，5-二叔丁基-4-羟基苯基）丙酸和正丁醇为原料，采用酯化反应，合成了新型受阻酚防老剂。并采用红外光谱、热重分析及荧光测试对合成的防老剂结构进行表征。结果表明，合成的防老剂是3-（3，5-二叔丁基-4-羟基苯基）丙酸正丁酯。受阻酚防老剂最佳合成实验条件是回流时间8 h、催化剂质量分数3．2％、丙酸与正丁醇物质的量比为1∶2。采用力学性能测试、红外光谱、热重分析等方法研究了受阻酚防老剂对NR硫化胶的防护性能，结果表明受阻酚防老剂对NR硫化胶有显著的防老化作用，其防老化效果优于防老剂BHT ，且对橡胶无色泽污染性。
이3-（3，5-이숙정기-4-간기분기）병산화정정순위원료，채용지화반응，합성료신형수조분방로제。병채용홍외광보、열중분석급형광측시대합성적방로제결구진행표정。결과표명，합성적방로제시3-（3，5-이숙정기-4-간기분기）병산정정지。수조분방로제최가합성실험조건시회류시간8 h、최화제질량분수3．2％、병산여정정순물질적량비위1∶2。채용역학성능측시、홍외광보、열중분석등방법연구료수조분방로제대NR류화효적방호성능，결과표명수조분방로제대NR류화효유현저적방노화작용，기방노화효과우우방로제BHT ，차대상효무색택오염성。
The hindered phenolic antioxidant was synthesized with 3-(3 ,5-di-tert-butyl-4-hydroxyphenyl) propionic acid and n-butyl alcohol as raw materials by esterifying reaction .The antioxidant characterized by infrared spectroscopy and HNMR was 3-(3 ,5-di-tert-butyl-4-hydroxyphenyl) n-butyl propionate .The optimal synthesis conditions were as follows :reflux time 8 h , the molar ratio of 3-(3 ,5-di-tert-butyl-4-hydroxyphenyl) propionic acid to n-butyl alcohol 1∶2 and the catalyst amount 3 .2%on the total reacts .The effects of hindered phenolic antioxidant on the protective effect of NR vulcanizates were studied by mechanical property testing , infrared spectroscopy , thermal analysis . These results indicate that the hindered phenolic antioxidant havepronounced anti-aging properties ,which is higher than those of BHT antioxidant .Besides ,the synthesized hindered phenolic antioxidant had no color pollution for rubber .