摘要
用ＤＳＣ法研究了Ｌａ＿２Ｏ＿３和Ｙ＿２Ｏ＿３对浇铸尼龙－６（ＭＣ尼龙－６）结晶与熔融的影响。二者都使ＭＣ尼龙－６熔体等速降温的结晶温度Ｔ＿ｃ升高、等速升温的溶点Ｔ＿ｍ降低、结晶度Ｘ＿ｃ降低，拉伸过程的断裂能密度及断裂伸长率提高。Ｌａ＿２Ｏ＿３使ＭＣ尼龙－６平衡熔点只降低，结晶速率增加，结晶完善程度变差。Ｙ＿２Ｏ＿３使ＭＣ尼龙－６的升高，它可显著改善ＭＣ尼龙－６的耐热性。
The influences of addition of La_2O_3 and Y_2O_3 on the crystallization and melting be-havior of MC nvlon-6 have been studied by DSC technique at a rate of 10℃/min.Both rareearth oxides increased the crvstallization temperattire T_c and decreascd the melting tempera-ture T_m of MC nylon-6,decreased the crystallinity X_c. Addition of La_2O_3 decreased the equi-librlum melting temperature ,leading to the increased crystallization rate and imperfect-ness of the crvstallization. Adtlition of Y_2O_3 increased the ,remarkedly improving thethermal stability of MC nylon-6.
出处
《应用化学》
CAS
CSCD
北大核心
1995年第2期76-79,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金资助课题
