CAJ | 학술논문

利用液-固吸附色谱柱将重油分离成四组分或八组分;采用等体积黏度测定法测定了重油各组分稀溶液的黏度,绘制了比浓黏度-浓度曲线,并对其变化规律进行解释;提出了采用多点法和单点法计算重油组分特性黏度的方法.结果表明,重油各组分稀溶液的比浓黏度-浓度曲线均为水平线,满足Einstein定律,与高分子稀溶液比浓黏度-浓度曲线满足Huggins定律的情况不同,这是由于重油分子在稀溶液中呈刚体结构,分子间力不足以引起重油分子的形态尺寸变化的缘故.根据重油各组分稀溶液的比浓黏度-浓度曲线可以得到其特性黏度.
이용액-고흡부색보주장중유분리성사조분혹팔조분;채용등체적점도측정법측정료중유각조분희용액적점도,회제료비농점도-농도곡선,병대기변화규률진행해석;제출료채용다점법화단점법계산중유조분특성점도적방법.결과표명,중유각조분희용액적비농점도-농도곡선균위수평선,만족Einstein정률,여고분자희용액비농점도-농도곡선만족Huggins정률적정황불동,저시유우중유분자재희용액중정강체결구,분자간력불족이인기중유분자적형태척촌변화적연고.근거중유각조분희용액적비농점도-농도곡선가이득도기특성점도.
Two kinds of heavy oils were separated into four and eight fractions by liquid-solid adsorption chromatography, respectively. The viscosity of the dilute solution of heavy oil fraction was determined by using iso-volume viscosity determination method. The reduced viscosity-concentration curves for all the heavy oil fractions were drawn, and the variation rule of the viscosity-concentration curve was studied. The results indicated that the reduced viscosity-concentration curve for dilute solution of each heavy oil fraction was a horizontal line to follow the Einstein law, which was quietly different from the reduced viscosity-concentration curve of macromolecule dilute solution commonly following the Huggins law. In dilute solution of heavy oil fraction, heavy oil molecules were considered as rigid entities, and intermolecular force was not strong enough to change the shape and size of these molecules. Based on the horizontal line characteristics of reduced viscosity-concentration curve, the novel calculation methods of intrinsic viscosity of heavy oil fraction were proposed, including multi-point method and single-point method.