晶体直径的增大也使结晶潜热的散发更加困难,结晶速率难以提高。
The increase of the crystal diameter also makes the release of the crystallize latent heat and the exaltation of the crystallize velocity more difficult.
但是,PET在使用过程中存在着刚性强、韧性差、结晶速率低等缺点。
However, there still exist some shortcomings such as hard rigidity, poor toughness and low crystallization rate for PET.
二者的主要差别在于粉末的熔体结晶速率快,结晶峰尖窄,过冷程度低。
The crystallizing rate for the powder melt at constant cooling rate was quicker, its crystallizing peak was higher and sharper, and its super cooling degree was lower.
引入APP后,PP/APP复合材料的平衡熔点升高,结晶速率大幅度提高。
Because of the introduction of APP, PP/APP′s equilibrium melting point rose slightly and crystallization rate rose markedly.
此外,高倍拉伸会提高上述二类多嵌段共聚物中软链段结晶的熔点和结晶速率。
In addition, high draw ratio will increase the melting point and crystallization rate of the soft segments for both types of segmented copolymers.
结果表明:纳米碳纤维可提高PP的结晶温度,但略降低其结晶速率和结晶度。
The results show that the carbon nanofiber can heighten the crystallization temperature of polypropylene and lower its crystallization rate and degree of crystallization in small extent.
用差热扫描法,采用等速升温,测定了氯丁橡胶(CR)等温结晶时的结晶速率。
The isothermal crystallizing rate of polychlorOprene (cr) was determined by differential scanning calorimetry (DSC) at constant speed of temperature rising.
随着分子量的增大,尼龙1 0 1 0结晶速率变慢,其片晶的侧面自由能增大。
With the increase of molecular weight, the crystallization rate of nylon 1010 becomes slower and the folded chain surface energy accordingly increases.
制备了结晶速率快、力学性能优异的玻纤增强聚对苯二甲酸乙二酯(PET/GF)。
A kind of PET/GF composite with good mechanical properties and rapid crystallization rate was prepared.
用多种方法对两个结晶速率不同的PET样品在拉伸过程中的结晶和取向进行了研究。
Crystallization and orientation of PET films of different crystallization rates have been studied doing various techniques during stretching.
结果在明,从玻璃态结晶时,随着PC含量的增加,PET 组分的结晶速率先增加后降低。
The results's demonstrate that the crystallization rate of PET increases at first and then decreases with increasing PC content if the blends are crystallized from the glassy state.
采用偏光显微镜和光学解偏结晶速率仪研究了嵌段聚醚酯共聚物的结晶形态和等温结晶过程。
The crystallization morphology and isothermal crystallization process were studied by means of polarized microscope and DLI (Depolarized Light Intensity) for poly (ether ester) block copolymers.
实验结果表明结晶速率随着聚合物与稀释剂之间的相互作用的减小或者冷却速率的增大而增大。
The experimental results indicated that the crystallization rate increased by increasing interaction between PVDF and diluent or increasing the cooling rate.
通过测定结晶速率和动态力学损耗的方法研究了接枝对聚丙烯的结晶行为和动态力学性质的影响。
The effect of grafting on the crystallization and dynamic mechanical properties of PP have also been investigated by the determination of the crystallization rate and dynamic mechanical loss.
本发明涉及一种聚乳酸快速结晶的方法。该方法通过加入新型有机成核剂来缩短聚乳酸的结晶速率。
The invention relates to a method for quickly crystallizing polylactic acid, which reduces the crystallization rate of polylactic acid by adding novel organic nucleating agent.
用MTA合成的PET结晶机理和常规PET相同,结晶速率高于常规pet,热稳定性略低于常规pet。
As compared with regular PET, the synthesized PET from MTA had the same crystallization mechanism, higher crystallization speed and a bit lower thermal stability.
结果表明,由于成核添加剂与PET之间在熔融态下存在化学反应,导致PET有不同程度的分子量下降,同时PET结晶速率发生变化。
It is found that there are chemical reactions between nucleating additives and PET in the melt state, resulting in the change of molecular weight and crystallization rate of PET in some degree.
提高纳米碳纤维含量或减小纳米碳纤维直径,PP结晶行为的上述变化更为明显,但结晶速率随纳米碳纤维含量出现先减小后增大的趋势。
Increasing the carbon nanofiber contents, or reducing the diameter of the carbon nanofiber, the influence becomes more obvious, but the crystallization rate rises...
晶体生长速率随相对过饱和度增加而增加,而结晶成核诱导期随相对过饱和度的增加而缩短。
The crystallization growth rate of glutamic acid increases and the induction period decreases with the increase of supersaturation.
粗晶lc 4合金在较低温度和较高应变速率条件下,因能产生有效的再结晶细化,而呈现出一定的超塑性。
The coarse crystalline LC4 alloy exhibit some superplasticity under lower temperature and higher strain rate, because it can create effective recrystallization refinement.
运用化学反应工程的观点和方法研究了工业结晶过程中流体的混合状态及其对晶体生长速率的影响。
Mixing phenomna in industrial crystallization, and effects of mixing characteristics on the crystal growth rate were discussed using the principles and methods of chemical reaction engineering.
聚乳酸的结晶性能对其力学性能和降解速率有着重要的影响,因而其结晶行为也逐渐成为人们研究的热点。
The crystallinity of PLA has great influence on its mechanical properties and degradation rate, so the crystallization behavior of PLA has also attracted many researchers to widely research.
论文综合了还原罐的容积,产生镁的反应速率和生成镁的量等因素,计算了镁和钠的结晶位置。
Paper combined such factors as the volume of retort, the reaction rate and the mass of produced magnesium, and calculated the crystal location of magnesium and sodium.
粗晶lc 4合金在较低温度和较高应变速率条件下,因能产生有效的再结晶细化而呈现出一定的超塑性。
Coarse crystalline LC4 Aluminium Alloy presents certain superplasticity at lower deformation temperature and higher strain rate because it can create effective recrystallize refinement.
同时在结晶器中增加细晶排出装置,降低晶核数量,提高晶体生长速率,达到改善结晶质量的目的。
Meanwhile, fine crystal discharge device was added in crystallizer to decline quantity of crystal nucleus and to increase crystal growth rate so as to reach the aim of improving crystalline quality.
经x射线衍射分析,纯钛表面经阳极氧化处理后,其表面生成了一层非晶态的氧化钛薄膜,并且钛晶体的各个表面沿不同结晶方向的腐蚀速率不相同。
XRD results indicate that amorphous titanium oxide film is formed on the surface after anodic oxidation, and corrosion rates of titanium crystal vary along different crystalline orientation.
冷却速率增加,UHMWPE需更高的过冷度才能结晶。
The highly undercooled was need for UHMWPE crystallization with the increasing of cooling rate.
还探讨了升温速率对结晶熔融行为的影响。
This peper also studied the effect of DSC scanning rates on the crystallize and melting behavior.
结果表明:变形温度、变形速率和变形程度对流动应力和再结晶晶粒尺寸均有不同程度的影响。
The influences of deformation temperature, deformation rate and deformation degree on the flow stress and grain size are different. The deformation degree mainly influences the shape of flow curves.
结果表明:变形温度、变形速率和变形程度对流动应力和再结晶晶粒尺寸均有不同程度的影响。
The influences of deformation temperature, deformation rate and deformation degree on the flow stress and grain size are different. The deformation degree mainly influences the shape of flow curves.
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