尼龙－1010的聚集态结构

THE AGGREGATION STATE STRUCTURE OF THE NYLON-1010

用ＷＡＸＤ、ＤＳＣ、方差－范围函数．密度测量等方法，研究了经不同热处理的尼龙－１０１０的聚集态结构．发现退火处理更有利于尼龙－１０１０结晶的生成和稳定，且尼龙－１０１０的结晶，有一个最佳的热处理温度．在该温度附近，尼龙－１０１０的结晶度和微晶尺寸里最大值．

ylon - 1010 samples were treated by two methods, method I: annealing aftermelting; method II: annealing after quenching of melt at room temperature.The distractional patterns of the isothermal crystallization samples were determined by WAXD. There are three distinct peaks at 20=8. 5°, 20. 05 ° and23. 92° respectively, the amorphous samples have only a broad peak at about20 =21. 50°.Based on the graphic multipeak resolution method, the degree of crystullinity(Wc.x) of the samples after various heat treatments were calculated. In order toconfirm the results, the degree of crystallinity (Wc.d) from density measurementand the degree of crystallinity (Wc,h) from DSC measurement were also shown.The W., a (a= x, d, h ) of every sample has maximum' value of the normaldistribution with temperature change, indicating that both method 1 and nethodII have the most suitable annealing temperature (Th) for crystallization of the sam pies. The W., x of the samples from method I were higher than those of the samples from method II when the Th were the same, indicating that method I is better than method 11 for the crystallization of Nylon-1010.Based on Variance-Range Function method, the single peak of 002 w'as separated into crystalline and amorphous partions by using a computer. air all profiles were corrected for background, Lorentz factor, polarization factor andabsorphon factor, the variance W20= W0+ K0 can be obtained.The plot of variance (W) vs range (a) is a straight line. The values of theslope k and intercept W, were obtained. The crystallitC size L,*, andparacrystallinity parameter g can be calculated.The Lhkl, in terms of the Soberrer Equation were also calculated. The result indicated that Lhkl calculated from the two methods have maximum values whenplotted against the tffeperature change. The Lhkl, of the samples from method I arehigher than those of the samples from method II when the Th are the same. Thevalues of g are on the reverse, indicating that the crystal lattices of the samplesfrom method I are more perfect. These showed further method I is advantageousfor the formation and stability of the crystals.