材料

Fire-retardation mechanism of FRW,a fire-retardant of new formulation for wood,was studied by CONE calorimetric analysis.

锥形量热仪法不仅是一种强有力的材料阻燃性能的评价方法[1～2]，而且可用于材料阻燃机理的研究[3～4]。

The following results were obtained: 1. Several multi-pore materials were compared and a nylon membrane was choosed to conduct experiments. 2. Two devices and methods for controlling negative hydraulic heads were developed. Coupled with the devices, a system for precise control of soil moisture udring pot experiment was developed. 3. Two times of pot experiment studying wheat seedling growth under precise soil moisture control were conducted. Some very important results were obtained. 4. Capillary rise, horizontal and vertical infiltration under different nagative hydraulic heads were observed. The concepts of "critical wetting distance" and "wetting coefficient" were proposed. The linear relationship between wetting front movement distance and cumulative infiltration amount was confirmed. Spatial distribution model of soil moisture and its simple derivation method were established.

通过该项目支持，获得了以下的研究成果： 1、比较和检验了不同多孔材料，初步选定了用于水分控制的多孔膜材料； 2、完成了两种负水头控制方法与装置的研究，并制作了仪器，与负水头控制装置配套，制作了盆栽实验用水分精控盆； 3、进行了两期小麦苗期水分精确控制盆栽实验，获得了一系列重要结论； 4、进行了不同负水头下土壤的毛管上升、水平入渗、垂直入渗研究，提出了临界湿润厚度、湿润系数两个概念，确定了湿润锋与入渗量的线性关系、土壤含水量的空间分布模型，土壤含水量空间分布的简单推算方法。

With morphology characteristics of erosion concave of Ag and Pd contact materials in nitrogen and air being compared, influence on erosion, welding and breakdown voltage of contact for nitrogen and SF_6 being analyzed, influence on contact for the formic acid, toluene, carbinol and distilled water being analyzed, it was showed that the influence on performance parameters of relay contact for various atmospheres is very com...

通过比较触头材料Ag和Pd分别在氮气和空气中侵蚀凹坑的形状特征，分析了氮气和SF6等气氛对触头侵蚀、熔焊、耐压的影响，及甲酸、甲苯、甲醇、蒸馏水等对触头的影响，表明各种气氛对继电器触头性能参数的影响十分复杂，该影响涉及对电弧运动规律的影响和与材料的化学反应。

In recent years, the most widely studied anode materials for Li ion cell were graphite and other carbonaceous materials.

近几年来，研究最广泛的锂离子电池负极材料是石墨以及各种碳材料。

Carbonaceous mesophase is an excellent precursor for carbon materials, especially those with high additional value.

炭质中间相是制备炭材料，尤其是高附加值炭材料的优质前驱体。

Carbonaceous materials are currently used as anode materials in commercial lithium ion batteries.

目前商品化的锂离子电池中使用的负极材料是碳材料。

In this paper, the corrosion of materials in carbonaceous atmospheres at high temperatures is reviewed, including metal dusting and internal carburization.

本文综述了材料在高温含碳气氛中的腐蚀，包括金属粉化和碳化，讨论了材料在含碳气氛中的腐蚀机理和腐蚀动力学。

From the dehydration of acetic acid in industry, novel membranes used for this purpose were prepared by modifying Cardo polyetherketone (which is solvent resistance and hydrophobic) for the first time.

基于醋酸脱水的重要的工业意义，本论文首次以耐化学溶剂性能优异的亲油性材料酚酞侧基聚醚酮为膜材料，通过对其进行改性，制备醋酸渗透蒸发脱水膜。

In this study, the electrical conductive composites (comprised of thermoplastic matrix resins-high density polyethylene, polyphenylene sulfide and polyarylethersuifone with cardo group, and conductive fillers-short carbon fiber, carhon black and graphite) are prepared and characterized in detail. The relation among composite structure and directalternating electric properties, some electric and magnetic parameters under X-band microwave and shielding effect, the mechanical behaviour are analysed. And furthermore, some relative experimental devices are developed.

本工作利用短切碳纤维、炭黑、石墨为导电填料填充热塑性树脂高密度聚乙烯、聚苯硫醚、酚酞型聚芳醚砜，制得具有良好导电性能和机械性能的导电性高分子复合材料，并以此为对象，研究了材料的稳恒电场和交变电场的基本特性与材料结构的关系，研究了在X波段微波场下的电磁参量及屏蔽效应，以及研究了复合材料及其基体树脂的力学行为，与此同时还建立了相应的表征测试手段。

At present, plenty of resin restorative materials were used in caries fillings with own advantages and disadvantages.

目前，临床龋齿充填应用的树脂材料种类繁多，各有其优缺点，新型复合树脂材料凭借其独特的优势，将有广泛的应用和发展前景。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。