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接触角     
相关语句
  contact angle
    RELATIONSHIP BETWEEN CONTACT ANGLE FOR GLASS ON Pt ALLOYS AND GLASS VISCOSITY
    玻璃对Pt合金的接触角与其粘度的关系
短句来源
    The hydrophobic surfaces of HDPE films are hence hydrophilically modified with the contact angle decreasing from 104° to 48°.
    由于在聚乙烯薄膜的表面引入了亲水性的聚乙二醇分子链,其表面接触角从改性前的104°降至48°.
短句来源
    TiO2 film shows super-hydrophilic property as indicated by a zero contact angle between TiO2 film and water.
    254 nm紫外光光照后三种氧化物膜接触角均有不同程度的降低,TiO_2表现出超亲水性。
    Compared with uncoated graphite, contact angle with water of all of the composite particles are much smaller and decreased gradually with the increase of the coating amount.
    包覆后,各类复合粉体与水的接触角都比未处理石墨低,而且随着包覆率增大,接触角有进一步降低的趋势。
短句来源
    The change of CL conformation in water was analyzed with dynamic contact angle measurement.
    动态接触角分析说明了CL接触水相时构象的变化。
短句来源
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  contact angles
    Compared with the original ZnO and Fe2O3, heteroj unction films of ZnO/TiO2 and Fe2O3/TiO2 have smaller contact angles, probably due to the change of the electronic distribution in the built-in surface electric field upon the formation of heteroj unction. Fe2O3/TiO2 film also shows super-hydrophilic property.
    ZnO/TiO_2,Fe_2O_3,/TiO_2异质结薄膜ZnO,Fe_2O_3表面的接触角小于对应的单纯ZnO,Fe_2O_3,负载膜的接触角,其中Fe_2O_3/TiO_2异质结的Fe_2O_3表面出现超亲水性。
    For the wollastonite fiber filled composites, the advanced contact angles was not less than 90o and receding contact angles was not less than 70 o when the fiber content was less than 15%wt, indicating a better drag reduction property of the composites with a content less than 15%wt.
    对填充纤维进行偶联剂处理有利与提高接触角。 当硅灰石纤维含量小于15%wt时,其复合材料的前进接触角和后退接触角仍分别保持在90°和70°以上,表明当硅灰石纤维含量小于15%wt时复合材料仍能保持较好的减阻性能。
    With the increasing of anneal temperature, the resistance of P-implanted TiO2 thin films decrease and their water contact angles fluctuate at 70?
    随着退火温度的上升,P注入的TiO2薄膜材料电阻降低,与水的接触角在70度左右波动.
    For the wollastonite fiber filled composites, the advanced contact angles was not less than 90° and receding contact angles was not less than 70 ° when the fiber content was less than 15%wt, indicating a better drag reduction property of the composites with a content less than 15%wt.
    对填充纤维进行偶联剂处理有利于提高接触角。 当硅灰石纤维、海泡石纤维和钢纤维的含量小于15%wt时,其复合材料的前进接触角和后退接触角仍分别保持在90°和70°以上。
    The results show that rare earth additions into Al Zn Mg Cu alloy can decrease the contact angles effectively and improve interfacial structure with optimum rare earth content being about 0.5wt% for Ce and 0.7wt% for Y.
    结果表明,Al-Zn-Mg-Cu合金中加入稀土可有效降低铝合金/Al2O3界面的接触角,改善界面结合状态; 稀土改善界面润湿性存在一最佳含量范围,添加Ce的最佳含量约为0.5wt%,Y约为0.7wt%。
短句来源
更多       
  the contact angle
    The hydrophobic surfaces of HDPE films are hence hydrophilically modified with the contact angle decreasing from 104° to 48°.
    由于在聚乙烯薄膜的表面引入了亲水性的聚乙二醇分子链,其表面接触角从改性前的104°降至48°.
短句来源
    It is shown that hydrophobic SiO_2 aerogels can be obt ained when the mass ratio of MTES/ PDEOS is higher than 1.2. The contact angle b etween hydrophobic SiO_2 aerogels and water is larger than 110°, the densities and specific surface areas of hydrophobic SiO_2 aerogels are in the range of 1 25~160kg/m~3 and 560~900m~2/g respectively. 
    当MTES/PDEOS(重量比)大于1.2时,经表面改性的疏水二氧化硅气凝胶与水的接触角大于110°,其密度和比表面积分别在125~160kg/m3和560~900m2/g范围。
短句来源
    ℃. The value of the contact angle of water on the coating of core-shell microsphere was 20° and became 93° after radiation from infrared laser.
    该微胶囊感激光后发生相变,接触角由初始的20°变为93°。
短句来源
    For graphite/Ni system, the contact angle at 1340℃ in vacuum is 78°, which is hardly affected by the dwelling time.
    1340℃时,在真空中石墨/Ni平衡接触角为78°,保温时间对接触角没有显著影响。
短句来源
    The contact angle of the coated-particles by Al decreases clearly and it is related to Y_2O_3 content on the surface of Al_2O_3 particles.
    颗粒表面改性后与Al熔滴间的接触角明显减少且与颗粒表面Y2O3包裹程度有关;
短句来源
更多       
  water contact angle
    The P-doped DLC film exhibits excellent wettability (16.9° water contact angle) . In vitro platelet adhesion experiment is conducted to examine the blood compatibility.
    掺杂表面表现出强烈的亲水性(水接触角为16.9°),体外血小板粘附实验结果显示,P掺杂DLC薄膜表面粘附的血小板少且变形小,表现出的血液相容性优于热解碳和未改性DLCo。
短句来源
    Transparent V_2O_5-TiO_2 composite nanometer thin films on glass substrates were prepared with sol-gel method and dip-coating technique to study the effect of titanium oxide addition on water contact angle,crystal phase and size.
    为了研究钒的掺杂对TiO2薄膜的接触角、晶型及晶粒粒径的关系,采用sol-gel制备了V2O5-TiO2复合薄膜和复合粉末并对其进行表征分析.
短句来源
    A superhydrophobic silica film was prepared by means of sol-gel and self-assembly techniques, with a very high water contact angle (155°~157°) and a small sliding angle (3°~5°), making water droplet move readily on the surface.
    通过溶胶-凝胶(Sol-Gel)法和自组装(Self-assembled)制备了具有超疏水性的薄膜,水滴在该薄膜上的平衡静态接触角为155°~157°,滑动角为3°~5°.
短句来源
    The experimental results show that a FDTS SAMS,with a thickness of 1.2 nm,water contact angle value of (111.5°) and surface roughness of 0.198 nm,can be prepared on the no-carbon-film magnetic head surface when the reaction time is 8 min.
    实验结果表明:当反应时间为8 min时,无碳膜磁头表面可制备膜厚1.2 nm、接触角值111.5°、表面粗糙度0.198 nm的FDTS单层自组装膜;
短句来源
    Recently,super-hydrophobic surface, with a water contact angle (CA) higher than 150°, hasattracted much interest because it will bring great convenience on our daily life aswell as in many industrial and agricultural processes.
    超疏水性表面是指水在固体表面的接触角大于150°的表面。
短句来源
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  contact angle
With the increase of DHPDMS content, the water contact angle increased while the surface tension decreased.
      
As the DHPDMS content increases above 5%, both the contact angle and the surface tension tend to approach a constant.
      
The contact angle increases with increasing temperature, and it tends to approach a constant when the temperature is higher than 50°C.
      
Surface energy of preservative-treated southern yellow pine (Pinus spp.) by contact angle measurement
      
Based on the contact angle data, the surface energy was obtained from the acid-base approach.
      
更多          
  contact angles
Dynamic Contact Angles of Water in Ultrathin Capillaries
      
The displacement kinetics is described by Washburn's equation with the dynamic values of contact angles and bulk viscosities of the solution and oils.
      
Contact angles were determined upon wetting of a cured epoxy resin by oligo(oxypropylene glycols) with different terminal groups.
      
A technique aimed at measuring contact angles for microparticles and suitable for determining the linear tension is developed.
      
The advancing and receding contact angles of water are measured for individual polystyrene microspheres with radii from 1 to 5 μm.
      
更多          
  the contact angle
As the DHPDMS content increases above 5%, both the contact angle and the surface tension tend to approach a constant.
      
The contact angle increases with increasing temperature, and it tends to approach a constant when the temperature is higher than 50°C.
      
Based on the contact angle data, the surface energy was obtained from the acid-base approach.
      
The results obtained cannot be explained in terms of hydrodynamic and barrier theories of the contact angle.
      
The contact angles are shown to increase with a decreasing microsphere radius, whereas the hysteresis of the contact angle decreases.
      
更多          
  water contact angle
With the increase of DHPDMS content, the water contact angle increased while the surface tension decreased.
      
The water contact angle data show that grafting of PEG400 onto PE can greatly improve the hydrophilicity of the PE surface.
      
With all water contact angle smaller than 74.3°, the crosslinked films demonstrated good hydrophilic properties.
      
It is shown that the water contact angle on the membrane surface decreases as a result of modification, and the extent of its change depends on the duration and temperature of membrane treatment.
      
The variations of water contact angle against surfactant concentration showed two distinct regions.
      
更多          
  其他


Monofilament contact angle meter has been used to measure the critical surface tension of glass fiber treated by different coupling agents. Because the critical surface tension of solid is a physico-chemical parameter denotes the surface property of solid and it is only dependent on the nature of cover but independent of the internal constitution of glass fiber. It is found that glass fibers treated by different coupling agents have different surface tensions, the order is as follows: 7114>KH550>A151The components...

Monofilament contact angle meter has been used to measure the critical surface tension of glass fiber treated by different coupling agents. Because the critical surface tension of solid is a physico-chemical parameter denotes the surface property of solid and it is only dependent on the nature of cover but independent of the internal constitution of glass fiber. It is found that glass fibers treated by different coupling agents have different surface tensions, the order is as follows: 7114>KH550>A151The components of coupling agent sedimented on surface of glass fiber have different effects on wetting property.

本文应用单丝接触角测定仪测定了不同偶联剂处理的玻璃纤维临界表面张力。结果表明:由于固体临界表面张力是描述固体表面性质的物化数据,因此它仅与表面复盖物的性质有关,而与内部的玻璃纤维的成份无关。不同偶联剂处理的玻璃纤维具有不同的表面张力,依次为7114>KH550>A151。沉积在玻璃纤维表面的偶联剂各级分对浸润性能的贡献是不相同的。

The Principles of the measurement of surface energy by measuring two liquids contac angle are discussed in this paper.By using these methods,Up-float model and Down-Sink model,the authors successfully determined the values of the s.urface energy of some high energy materials such as the alloys of iron,copper aluminium and glass A12O3 Ceramic,man-made SiO2 quartz.The results showed that; in the case of interfacial failure,adhesive bonding strength not only depends on the surface energy of the materials but also...

The Principles of the measurement of surface energy by measuring two liquids contac angle are discussed in this paper.By using these methods,Up-float model and Down-Sink model,the authors successfully determined the values of the s.urface energy of some high energy materials such as the alloys of iron,copper aluminium and glass A12O3 Ceramic,man-made SiO2 quartz.The results showed that; in the case of interfacial failure,adhesive bonding strength not only depends on the surface energy of the materials but also on the chemical composition as well as physical properties,in the case of chemical and physical properties of materials are similar,the strengths of the lap joints increase with the increasing of their γs and γsD and have nothing to do with γsP then the relationship between the strength and surface energy does not hold in the case of chemical and physical properties are different.

本文讨论了基于双液法接触角测定的固体表面能的测算原理,研究了上浮模式及下落模式两种实验方法,并测算了经不同表面处理的钢、铁、铝等合金及玻璃,氧化铝陶瓷,石英等高表面能材料的表面能值及其对粘合性能的影响。研究结果表明,在界面破坏的情况下,粘接强度不仅与材料的表面能有关,而且与材料表面的化学组成及物理性质及形态有关。在组成物性及形态相接近的各材料中,粘接强度随材料的表面能增大而增高(主要随表面能值中的Y_s~D值增大而增高)。在组成、物性及形态不同的材料之间,粘合强度与表面能值并无对应关系。

Carbon fiber surface properties were systematically studied by means of measuring specific surface, contact angle,wettability, surface energy and surface group·Specific surface measured by dy-namic absorption method, increased with the oxidation treatment time, rose from carbon fibers etched by acid. The most probable pore distribution of carbon fibers tested is in the scope 10-12A, The changes of surface energy were measured by contact gonio-meter and increased with oxidation treatment time too·There were...

Carbon fiber surface properties were systematically studied by means of measuring specific surface, contact angle,wettability, surface energy and surface group·Specific surface measured by dy-namic absorption method, increased with the oxidation treatment time, rose from carbon fibers etched by acid. The most probable pore distribution of carbon fibers tested is in the scope 10-12A, The changes of surface energy were measured by contact gonio-meter and increased with oxidation treatment time too·There were the dispersion and polar components of surface energy in which the polar components increased obviously and the dispersion com-ponents decreased slightly。The contact angles with respect to epoxy resin or water decreaseed witn the oxidation treated time. The treatment modified the wettabilities of treated fibers toward better ones. Then, changes of wetting velocity of carbon fibers were easured by microbalance. The wetting velocity in water increased about 3 times after the oxidattion treament of carbon fibers, which further verified that the wettabilites became better by oxidation treatment。 Surface chemical groups were determined by means of chemical and XPS analysis methods. Both results proved that groups Iincreased with oxidation treated time, which revealed that het essential of polar components of surface energy and surface wettability increased with oxidation treated time. Good agreement between the results of chemical analysis of surface groups and those of XPS analysis method showed that it was possible to apply XPS instead of tedious chemical analysis method for the comparison of relative change of concentration。

通过此表面、接触角、浸润性、表面能和表面基团的测定,本文较系统地研究了碳纤维表面性能。结果表明经处理后的碳纤维表面的浸润性、此表面、表面能与表面基团含量都增加。就浸润性而论,不论对环氧或水的接触角都随氧化处理时间增加而减少,浸润速度随氧化处理而上升,表面能随氧化处理而提高。特别是表面能中极性组份增加得较为显著,这与表面基团分折结果表明表面含氧极性基团随氧化时间增加而增加的结论是相一致的。另外表面基团含量化学分析的结果与XPS分析的结果基本上一致,因此可以用XPS表面基团分析来代替烦杂的化学分析方法。

 
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