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산화방지제를 배합한 Polybutadiene과 Polyisoprene의 DSC에 의한 산화특성 연구
유종선,백남철,최세영 한국고무학회 1983 엘라스토머 및 콤포지트 Vol.18 No.4
The purpose of this dissertation is to increase oxidation resistance for Polybutadiene & Polyisaprene, and to investigate the energetics of inhibited oxidation of Polybutadiene & Polyisaprene stabilized with various types of antioxidants using DSC. The results of the study are as follows: 1. In the DSC SCREEN for the onset temperature of oxidation, Polybutadiene was faster than Polyisoprene for the samples containing no antioxidant in air. 2. In the DSC evaluation for Polybutadiene, Recipe BG-4 with 2.0phr compounds of antioxidant was the best effective, and Recipe BS-4 with 2.0phr compounds of antioxidant was the warst effective, and the degrees of effect of antioxidant were exhibited in the ranking of G-1, D, BHT, and SP, roughly. 3. In the DSC evaluation for the Polyisoprene, Recipe IG-4 with 2.0hr compounds of antioxidant was the best effective, and Recipe ID-4 with 2.0phr compounds of antioxidant was the worst effective, and the degrees of effect of antioxidant were exhibited in the ranking of G-1, SP, BHT, and D roughly. 4. In the study on enthalpy which depends on exothermal reaction, the enthalpy of Polyisoprene was greater than that of Polybutadiene. However, the problem was not salved completely, and it needs further studies.
유종목 한국중국어문학회 2001 中國文學 Vol.35 No.-
從北宋神宗元豊三年到八年的五年多期間,蘇東坡在黃州等地過了第一次貶謫生活;從北宋哲宗紹聖元年到元符三年的七年期間,他在惠州ㆍ?州等地過了第二次貶謫生活. 我們一般想:他在第二次貶謫時期,比第一次貶謫時期年輪也更多了,處世態度也更圓熟了,因而他的詞風可能也更淸曠了. 可是筆者親自考察的結果不太這樣. 筆者却可以說:第二次貶謫時期的東坡詞不比第一次貶謫時期的詞淸麗曠達,而帶着更多的哀愁與悲凉. 換言之,第一次貶謫時期的東坡詞多半是淸曠風格,而第二次貶謫時期的東坡詞一半是淸曠風格一半是婉約風格. 原因何在? 筆者的看法如下:不?`仙而人者`的李白一樣,蘇東坡是一位`人而仙者`的人. 有的時候他雖然好像是一位仙人似的,但他究竟是一位`多情多感仍多病`的富有人情味的凡人. 表現在第一次貶謫時期詞的那些超脫現實的淸曠風格是他積極努力的産物. 在第一次貶謫時期他還抱着東山再起的希望和信心,所以還能擁有一定要克服危机的心態,而克服那種危机的唯一方法就是超脫現實而讓自己的心靈游於物外. 在第一次貶謫時期,積極努力的結果,他的心態在相當程度上獲得寧靜沈着,他的詞風因此也能堅持淸麗曠達. 可是在第二次貶謫時期,他不復有東山再起的希望和信心,因此再也不能擁有要克服困難的心態. 要是說第一次貶謫時期的詞風是積極努力的産物,第二次貶謫時期的詞風是沒有屈折的自然狀態,這才算是蘇東坡的眞面目.