Ester-amide exchange reaction during the melt blending of PET/ PA6 and its effect on the melting point, degree of crystallinity, and the morphology of the blend were studied. 研究了PET与PA6在熔融共混时的酯-酰胺交换反应。采用DSC、SEM、FTIR等测试手段探讨了酯-酰胺交换反应对组分熔点、结晶度及共混物形态的影响。
The degree of crystallinity can be increased by annealing in an inert atmosphere. 结晶度可通过在惰性气体中的退火处理来提高。
The degree of crystallinity is important because it affects toughness and mechanical strength. 结晶度很重要,因为它会影响产品的韧性和机械强度。
The different condition of hydro-thermal produce hydration products CSH ( B) and Tobermorite with different degree of crystallinity. 随着水热合成条件不同,产生了不同结晶程度的CSH(B)、托贝莫来石;
However, the nucleating effect of BA-MMA-AA at high content increased the nucleating and crystallizing rate, and then achieved improvement of the melt point and the degree of crystallinity of PBT. 随BA-MMA-AA含量的提高,其异相成核作用导致PBT的成核速率和结晶速率提高,从而提高了共混物中PBT的熔点和结晶度。
The structure parameters such as the degree of crystallinity, the size of crystallites were greatly affected by the temperature of every procedure of after processing. Especially, the structure and properties of fibers were controlled by the temperature of the second step drawing directly. 各工序温度对结晶度,晶粒尺寸等结构参数影响较大,尤其是二道牵伸温度直接影响纤维产品的结构和性能。
The effects of molecular mass characteristics and the degree of crystallinity on the diffusion was studied for a system with fixed nitrogen content ( 12.2%). 重点研究了含氮量较均匀的中氮量(12.2%)NC的分子量分布及结晶度对扩散性能的影响。
Polyamides composed of only para-oriented phenylene units have high degree of crystallinity, and are insoluble in all solvents. 研究表明,由对位苯撑结构构成的聚酰胺呈现很高的结晶度,不溶解在任何溶剂中。
The results showed that the degree of crystallinity and the melting enthalpy of PBS decreased with the increase of the molecular weight. 结果表明结晶度和熔融焓随分子量的增大而减小;
The results indicate that the molecular sieve exerts an obvious heterogeneous nucleating effect on PET, accelerates the crystallization rate, increases the degree of crystallinity and narrow the crystalline size distribution. 结果表明:分子筛的加入有明显的异相成核效果,加快了结晶速率,增加了结晶度,减小了晶粒尺寸分布。
The DSC and polarizing microscopy showed that the degree of crystallinity and the spherulite size of polypropylene in the blends decreased with increasing content of polyester-polyether block copolymer added. DSC和偏光显微镜图分别表明共混物中聚丙烯结晶度以及球晶尺寸随聚酯-聚醚的混入量而变小。
The degree of crystallinity of cellulose in sawdust and pulp is fairly high and changes slightly with the lignin removal. 木屑和浆中的纤维素结晶度相当高,而在脱木素过程中只呈微小变化。
The shift of stoichiometry ratio was little, the material had homogeneous structure and composition, the degree of crystallinity was high. 介绍了SP法制备的锂离子电池正极材料的特点,如化学计量偏移小,材料结构和组成均匀,结晶度高等。
The effect of injection molding process parameters on the degree of crystallinity of polypropylene 注射成型工艺参数对聚丙烯结晶度的影响
After adding compatibilizer, the degree of crystallinity and melting point of PCL decreased further, and PCL also decreased the crystalline temperature of PBS in certain PCL content. 加入相容剂后,PBS使PCL结晶度及熔融温度下降的程度加大,PCL在一定范围内降低了PBS的结晶温度。
The cross-linking decreased the degree of crystallinity and the temperature sensibility of melt viscosity. 由流变曲线看出,交联降低了PP熔融黏度对温度的敏感性;
Moreover, the HA coating sintered at different temperature has different degree of crystallinity. 经不同温度处理后,HA涂层呈现了不同的结晶状态。
The introduction of hydrophobic groups GMA changed the degree of crystallinity of CS-g-GMA, also made the swelling ratio of non-polar solvents such as benzene, cyclohexene and cyclohexane, in CS-g-GMA increase significantly. 疏水性基团GMA的引入改变了CS-g-GMA薄膜的结晶程度的同时使得非极性溶剂,如苯、环己烯和环己烷等,在其中的溶胀度明显增加。
Movement and crystallization behavior of the molecular chains of PCL in the hybrid system are subject to restrictions of TiO2, leading to reduce the degree of crystallinity of the PCL part of the PCL can be crystalline materials of different composition is relatively "unperturbed part". PCL在杂化体系中分子链运动和结晶行为都受到YiO2的限制,导致PCL的结晶度减小,在不同组成的材料中PCL能结晶的部分是相对无扰部分。
High calcination temperature increased the disordered structure of Beta zeolite, and then decreased its degree of crystallinity. 高温焙烧会导致Beta分子筛中的无序结构增加,结晶度下降。
The degree of crystallinity, surface chemical state and surface structural features of salix activated carbon were determined by XRD, FTIR and BET specific surface area. 并采用XRD、FTIR、BET比表面积等表征手段对沙柳活性炭的结晶度、表面化学状态、表面结构特征进行了研究。
It is shown that in the selected processing parameters, the extruded polymer tubes and the balloons had a good batch of stability, the influence of extrusion conditions on the tube is mainly reflected in the degree of crystallinity and orientation. 研究结果表明,在选取的加工参数下,挤出的聚合物管材及球囊具有很好的批次稳定性,挤出条件对管材的影响主要体现在结晶度与取向度上。
Characterization through XRD diffraction analysis, we found that SiO2/ Al2O3 is a key factor in impact of synthetic zeolite type and the degree of crystallinity. 通过XRD衍射表征分析,发现SiO2/Al2O3是影响合成分子筛类型和结晶度的关键因素。
XRD results also illustrate the annealing temperature improve the degree of crystallinity of the ITO film. XRD结果还说明了退火温度的升高能够提高ITO薄膜的结晶度。
Pasting temperature was negatively correlated to the degree of crystallinity. 糊化温度与结晶度呈显著负相关。
Although the modified zeolite maintained its topology, the degree of crystallinity was declined because the intensity of diffraction peak decreased. 改性之后的分子筛虽然保持了其拓扑结构,但衍射峰强度减弱表明其结晶度降低。
So change the degree of crystallinity of Nafion to enhance the stability of Nafion by changing electrode post-processing temperature, in order to achieve improving the purpose of the durability of the electrode. 因此,本文采用改变电极后处理温度的方法来改变Nafion的结晶度,提高Nafion的稳定性,从而达到提高电极耐久性的目的。
However, high degree of crystallinity, insolubility, poor processability, and lack of functional groups restrain the bacteriostatic performance and the moisture retention, causing bacterial cellulose of limited further application. 然而细菌纤维素结晶度高、难溶解、难加工,且官能团比较单一导致了细菌纤维素的抑菌性和保湿性等不足,限制了其进一步的应用。