| 1. | It is shown that the value of the avrami exponent n decreases because of the limited volume 结果表明,有限的体积使avrami指数n值偏小。 |
| 2. | Avrami exponent did n ' t change obviously after grafting , which indicated that the crystallization mechanism of pp - g - am was almost as same as pp Pp接枝前后avrami指数n无明显改变,表明两者结晶机理基本相同。 |
| 3. | Then the validity of avrami equation and price equation is evaluated . and the quantitative data are obtained that the four factors influent on the parameters of polymer crystallization kinetics 利用模拟结果对avrami方程和price方程的有效性进行了评价,得到了上述四种因素对高聚物结晶动力学参数影响的定量数据。 |
| 4. | The results of linear regression indicate that the addition of pam do not alter the avrami exponents , about 2 - 3 , which suggests that the crystallization modes might be a mixture of three - dimensional spherulite and two - dimensional circular Avrami方程线性回归结果表明聚甲亚胺的加入对体系的avrami指数n影响不大, n值约在2 3之间。 |
| 5. | When the linear growth rate of entities g reduces , the value of vc reduces too . however , the values of avrami exponent and s are hardly affected by the value of g . the conclusions are approved by the data from hspom experiment 晶体线生长速率g减小,对avrami指数n值和_ s值基本没有影响:而g减小, v _ c值也会减小;热台偏光显微镜实验以peo为样品,也证实了这些结果。 |
| 6. | The curing dynamic parameters of epoxy resin / org - mmt / mz nanocomposites were obtained by the modified avrami expression and autocatalytic expression . the curing energy of epoxy resin / org - mmt / toa systems with different degrees of curing were obtained by flynn - wall - ozawa method 同时还利用了flynn - wall - ozawa方法求出环氧树脂桐油酸酐蒙脱土固化体系随着反应的进行不同固化度时对应的瞬间表观活化能。 |
| 7. | The linear simulations indicate that the primary stage of both isothermal and nonisothermal processes can be described by avrami equation , however the linear relations deviate due to the secondary crystallization , particularly for that of nonisothermal crystallization 结果显示avrami方程可以较好地描述该等温及非等温过程中的主期结晶阶段,而在次期结晶阶段,由于二次结晶现象而导致线性关系偏离,特别是在非等温结晶过程中。 |
| 8. | When being sporadic nucleation condition , four cases are considered that the number of nuclei increase with time by different ways . in every case , if the initial number of nuclei go up , the value of the avrami exponent n goes down approximately from 4 to 3 , on the contrary , the value of vc moves up 在散现成核条件下,考虑了晶核数目m随时间增加的四种不同情况,随着初始晶核数目m _ o的增加, avrami指数n值由接近于4逐渐减小到接近于3 ; v _ c值增加。 |
| 9. | Volume shrinkage of sample results in the increasing of the value of the crystallization rate vc and the decreasing the values of the avrami exponent n in the primary crystallization and s , defined as the relative crystallinity degree when experiment data deviate theoretical predicting straight line . compared with the avrami equation , the price equation hardly makes progress on describing the behavior of polymer later stage crystallization 样品体积收缩,导致avrami指数n值减小;结晶速度v _ c值增加;表示实验值偏离理论预测直线时的相对结晶度_ s值减小;与avrami方程相比, price方程仍不能较准确地描述高聚物等温后期结晶行为。 |
| 10. | The sample thickness declining , provided the number of nuclei per unit volume fix , the value of the avrami exponent n falls , but the values of vc and s almost do n ' t change . when the value of thickness reduce to the average diameter of entities , the turning point turn up after the course of crystallization has begun soon 当单位体积内晶核数目不变时,样品厚度h减小, n减小; v _ c和_ s值基本不变:当h降到小于等于体系内球晶的平均直径时,在结晶最初期,会出现一个初期转折点。 |