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In the aspects of research method, we took the method of preparing sol at first and then impregnating the wood to obtain ceramic-wood composite; this method made the wood use efficiently and increased the wood's weight gain percent. The ceramic-wood composite with performances of well decay resistance, dimensional stability, effloresce resistance and high strength was obtained by importing the cymene to the net of gel as the result of co-hydroxylation between MTES and TEOS. Making use of XPS ,we found that the apex of Si2p、O1s、C1s had evident chemical shift , which validated the existence of Si-O-C bonding.Key Words: Sol-gel, Ceramic-wood composite, Modified sol, Ecomaterials

在工艺方法上,采用先制备溶胶,然后浸注木材的工艺方法具有原料利用率高、提高增重率的优点;采用甲基三乙氧基硅烷和正硅酸乙酯共水解的方法,将甲基引入陶瓷化复合木材的凝胶内部,所制备的材料具有尺寸稳定性好、具有耐风化和耐腐朽性,强度高的特点;首次利用X射线光电子能谱,发现了Si2p、O1s和C1s谱峰发生了明显的化学位移,证实了Si-O-C键合作用的存在。

The distribution of temperature stress was calculated by finite element analysis. The results showed when the surface temperature of concrete was higher than 110℃, the temperature stress was more than 4 MPa without regard to the creep. This might be lead to the damage of the surface of concrete. At the same time, a lot of microstructure analysiss such as XRD, SEM, IR, HSA etc. were done to analysis the difference of the component and microstructre of concrete before and after corrosion. The results indicated that the decomposion of CSH gel and calcium hydroxide and the creation of dilatability calcium oxide were the internal reason of the deterioration of concrete in the corrosion form of high heat.

该文通过有限元方法计算了由于温度而产生的结构应力分布,计算结果表明当混凝土表面温度超过110℃时,如不考虑徐变时表层混凝土受到的温度应力将超过4MPa,这使得表层混凝土很容易因温度应力而破坏;同时通过X射线衍射分析、扫描电子显微分析和混凝土孔结构分析等多种微观结构测试手段,分析了混凝土受热前后的宏观性能以及微观组成和结构的变化,指出混凝土原水化产物如水化硅酸钙凝胶和氢氧化钙的分解以及膨胀性产物氧化钙的产生是高热腐蚀形式下混凝土破坏的内在原因。

Because we will control the content of alkali in clinker, although the clinkerability of high silicon low alkali gritstone composition is insufficient a little, but it"s a good composition. The best control parameters of high silicon low alkali gritstone composition are: adopting "three-high rates composition, in a specific way, three rates should choose KH:0.9, SM:2.6, IM:1.6, and control the granularity of raw material is 280m /kg.

从控制熟料中碱含量的角度出发,高硅低碱砂岩配料虽然易烧性略差,但仍不失为一个好的配料方案;高硅低碱砂岩配料方案的最佳控制参数为:采用"三高"配方,熟料的饱和比0.9,熟料的硅酸率2.6,熟料的铝氧率1.6,生料的细度控制在280m~2/kg。

The results demonstrate that a greatly increased bioavailability of As under the flooded conditions is the main reason for an enhanced As accumulation by flooded rice, and growing rice aerobically can dramatically decrease the As transfer from soil to grain.

这两种硅运输蛋白都在根部表达,其中一种称为Lsi1的蛋白是亚砷酸盐进入水稻的门户,而另一种称为Lsi2的蛋白控制着从根部到茎再到谷粒的流动。这组研究者还发现硅酸—含有硅、氢和氧—会干扰亚砷酸盐的摄取。他们提出,增加土壤中可利用的硅,可能会减少从土壤和灌溉用水到水稻的砷的运输。(生物谷Bioon.com

The chemistry behavior research of wollastonite indicated that the silicon-potassium fertilizer has a chemical active in organic acid.The factors affecting manurial effect of silicon-potassium fertilizer are not only soil pH and desilicification,but also content and type of organ in the soil.Wollastonite chemistry behavior indicates that silicic acid can be dissolved out from silicon-potassium fertilizer in chlorhydric acid solution if pH of solution is not smaller than 2. The drop of apparent density,increase of DBP sorptive rate and specific surface for leavings indicate that hydrated silicon oxide is polyporous,and those mineralogic feature presignify that silicon-potassium fertilizer has a role of conservation of both Moisture and Fertility and improving soil structure.After active ingredient releasing,silicon-potassium fertilizer leaves half the substance (non-active ingredient)in soil.

熟料单矿物在酸溶液中的化学行为研究表明,硅钾肥矿物在有机弱酸中的化学活性较好,影响硅钾肥肥效发挥的因素是土壤pH值和土壤的去硅化程度,还有土壤有机质的含量与种类;硅灰石在盐酸溶液中化学行为表明,在反应体系pH不小于2的情况下,硅钾肥矿物大量溶出硅酸根组分;溶解残余物表观密度降低、DBP吸着率和比表面积增加表明水合二氧化硅是以多孔形式存在,为硅钾肥具有保水保肥、改良土壤结构的提供了矿物学依据。

It has a high activated alkali degree,strong PH buffering effect,and strong resediment effect.It cooperates with suface activated agent well. Its aid-washing effect and detersive power in scour is almost the same with that of STPP,so it can replace STPP.It is an excellent new silicate non-phosphor washing assistants.It can be used to produce washing power in both front and back compound product line.It is also an imporant washing assistant for paste and liquid washing as well as basic raw material for industrial scour.It has wider foreground in market.

层状结晶硅酸钠具有较强的软化水和去污能力,很好的活性碱度,PH缓冲能力和抗再沉积能力强,与表面活性剂有较好的协同作用,用在洗涤剂中的助洗效果和去污能力与三聚磷酸钠相近,是优秀的新型硅酸盐助剂,可用于前后配料生产洗衣粉,也是膏状、液体洗涤剂的重要助洗剂及工业清洗剂的基础原料,产品市场前景广阔。

By experiment, we can concluded that stabilizers, chelatingagents, activators are necessary. 2.5%~5% sodium silicate,0.25%~1% magnesium sulfate,1%~2.5% citric acid,1.5%~2% OOBS are appropriate for peroxy bleaching.

通过实验证实,在过氧漂白中,稳定剂、漂白活化剂、螯合剂是必不可少的添加剂。2.5%~5%的硅酸钠、0.25%~1%的硫酸镁、1%~2.5%的柠檬酸、1.5%~2.5%的OOBS对于过氧化氢开释活性氧起到稳定或活化的作用,达到较好的漂白效果。

The bung uses the stainless steel plate to make the ledger wall,the built-in aluminum silicate heat preservation, the fire door size extends 350mm, high 580mm, in spandrel wall body whole upward promotion type electrically operated heat preservation fire door, when fire door closure the entire fire door is a circular whole, the fire door sealing property strengthens,the turntable uses the stainless steel to make the 1600m/m turntable, with take load bearing work piece, the entire turntable does not divide the location as the plane, the operators may pile up the work piece willfully, because turntable every 40 minutes turn on lathe biography one week, when work theoperators did not look nearly the turntable in the rotation, the fire door starts in addition in a big way, the operators may pass in and out the work piece willfully, but is not limited the time the turntable to be possible in 20-60The minute revolves one week-long time to modulate velocity willfully,no matter the fire door opens shuts, the turntable from the start work on uninterrupted revolving, not any necessity and the fire door open shut carry on the interconnection, needs to stop when revolves, only need press down on the control electricity cabinet's pause button then, the fire door opens shuts,grasps voluntarily by the operators, presses installs nearby the fire door opens shuts Niu then.

炉盖采用不锈钢板做底板,内置硅酸铝保温,炉门尺寸宽350mm,高580mm,侧墙体中整体向上提升式电动保温炉门,炉门关闭时整个炉门为一个圆形整体,炉门密封性能增强,转盘采用不绣钢制成1600m/m转盘,用以承载工件之用,整个转盘为平面不分工位,操作人员可以任意堆放工件,由于转盘每40分钟旋传一周,工作时操作人员几乎看不到转盘在转动,加上炉门开的较大,操作人员可以任意进出工件,而不受时间限转盘可以在20—60分钟旋转一周的时间任意调速,不论炉门启闭、转盘从启动工作就不间断的旋转,没有任何必要与炉门启闭进行联锁,需要停止旋转时,只需按下控制电柜上的停止按钮即可,炉门的启闭,由操作人员自行掌握,按动安装在炉门边的启闭钮即可。

Our factory is specialized in producing various specifications of solid, liquid sodium silicate to Tianjin Soda Plant "Red Triangle" Soda and Beijing Fangshan high-quality quartz sand as raw material, the use of local natural gas as fuel, using energy efficient furnace production of.

我厂专业生产各种规格的固体、液体硅酸钠,以天津碱厂的&红三角&纯碱和北京房山的优质石英砂为原料,利用当地的天燃气为燃料,采用高效节能炉进行生产的。

In the present dissertation, a surfactant-templated mesoporous silica molecular sieve with high pore volume, high porosity and narrow bimodal mesopore size distribution was synthesized for the first time in a reaction system, which was used usually in the synthesis of mesoporous MCM-41 molecular sieves, by a judiciously controlled two-phase sol-gel processing under basic conditions.

在本论文中,我们通过对一个通常用于制备介孔MCM-41分子筛的反应体系中正硅酸乙酯水解与缩合反应相对速率的精确调控,首次在弱碱性体系中合成了一种具有高孔隙率、大孔体积和双介孔孔分布特征的新型二氧化硅分子筛材料,简记为BMS,并对BMS二氧化硅分子筛中双介孔结构形成的原因及各种可能对其结构和性质产生影响的合成因素如Ammonia/silica摩尔比、组分浓度的变化、表面活性剂烷基链长度的调节、辅助有机物均三甲苯的引入、催化剂的结构和性质、溶剂和助溶剂的极性和用量、老化和干燥条件的变化及合成后水热处理等,利用不同的测试手段如XRD,SEM,TEM,〓Si MAS NMR,TG-DTA,N〓吸附测试等进行了系统的表征研究。

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