钛

EFFECT OF TITANIUM CARBIDE ADDITION ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ULTRA-FINE Ti-Ni CERMET

添加碳化钛对超细Ti-Ni金属陶瓷显微结构和力学性能的影响

The results indicate that improving temperature to reflux, using low polarity solvent as dispersion medium and proper molar ratio of tetrabutyl titanate to stearic acid can bring out good modification. The function of tetrabutyl titanate is to react with the surface hydroxyl groups and adsorbed H2O on the powder particles to produce new binding sites such as M—O—Ti—OC4H9and M—O—Ti—OH, which can easily react with the carboxylic acid. As temperature increases from room temperature to reflux temperature, the reactions between RCOO- and Ti change from coordinate bonds to covalent bonds, which makes the carbon chains of stearic acids more strongly bound with the powder particles surface.

研究结果表明，提高处理温度、适当增加复合改性剂中硬脂酸的量并选用极性弱的有机溶剂可达到比较理想的改性效果；钛酸四丁酯的作用是与粉体粒子表面的羟基以及吸附水反应产生偶联点，如M—O—Ti—OH，这些偶联点易于与羧酸反应；在低温时RCOO-与偶联点的Ti之间以配合物的形式发生作用，在回流温度下处理时，主要发生酯化反应，使硬脂酸更牢固地嫁接到粉体粒子表面，改性效果更好。

However the chlorohydrin route generates chlorinated by-products, mainly dichloropropane and CaCl_2, which results in equipment erosion and serious environmental pollution, while the co-production route needs large investment and its economic benefit is linked to market of the by-products, namely styrene or tert-butyl alcohol.

氯醇法设备腐蚀和环境污染严重，共氧化法设备投资巨大且受到联产物——苯乙烯或叔丁醇销路的制约。1983年，Taramasso首次报道了钛硅分子筛(TS-1)的合成，为低碳烯烃选择氧化开辟了一条新的途径。

Laparoscopic treatment without titanic clip to cut down the cholecyst artery is safe and effective for acute cholecystitis.

腹腔镜下对急性胆囊炎患者施行胆囊切除，胆囊动脉不施钛夹而行电凝切断是切实可行的手术方法，可减少异物在体内残留，且安全性较高。

Objective To analysis the safety and feasibility with laparoscopic treatment of acute cholecystitis to cut down the cholecyst and cholecyst artery without titanic clip.

e# 目的分析评价胆囊炎急性发作期在腹腔镜下行胆囊切除及胆囊动脉不施钛夹电凝切断的可行性及安全性。

It was also found that the decrease of immersion resistance and impedance of the commercial anti-corrosion of poly (vinyl chloride co-isobutyl vinyl ether) coating with increase of directly adding of nano-TiO2, which was elucidated with the theory of critical pigment volume concentration. At last, the optimal coating prescription was gotten as follows: 0.5-1.0g nano-TiO2 B, 25.6g resin, 33.4g xylene, 1.4g chlorinated paraffin, 1.5g 15% slurry of organic bentonite, 0.8g green chrome, 7.7g grey mica ferric oxide and 0.6g non-float aluminum.

直接添加纳米二氧化钛的商品化防腐涂层耐浸泡性能和交流阻抗值随添加量增加而降低，利用临界体积浓度理论等解释了该现象；通过实验获得了如下最佳涂料配方为：0.5-1.0g纳米TiO2，25.6g氯醚树脂，33.4g二甲苯，1.4g氯化石蜡52＃，1.5g 15%有机膨润土浆，0.8g氧化铬绿，7.7g云母氧化铁灰，0.6g非浮型铝粉。

Pigments/fillers: aluminium powder/paste, bronze powder/paste, zinc powder/paste; lead-free pigment, titanium yellow, transparent iron Oxide, colourant; chrome yellow, molybdate red; aluminum silicate, zinc oxide, zinc stearate; anti-corrosive pigment- strontium chromate, zinc chromate, zinc phosphate, zinc dust.

色粉/填料类：铝粉/浆、铜金粉/浆、锌粉/浆；无铅颜料、钛黄、透明氧化铁颜料、色浆；铬黄、钼红；硅酸铝、氧化锌、硬脂酸锌；防锈用颜料–铬酸锶、铬酸锌、磷酸锌、锌尘。

It has been achived some of effective chelating activatirs in the flotation of chrysocolla, malachite, ilmenite and wolframite.

研究还取得了有机螯合剂活化硅孔雀石、孔雀石、钛铁矿和黑钨矿细泥浮选的一系列有效方法。

OBJECTIVE: To study the preventive effect of chitosan and titanium net on epidural cicatricle adhesion after laminectomy.

目的：观察几丁糖-钛网联合运用对防治硬膜外瘢痕粘连形成的作用。

Association of chitosan and titanium net can effectively inhibit cicatricle adhesion surrounding dura meter after laminectomy.

几丁糖-钛网联合运用能有效抑制椎板切除术后硬膜周围的瘢痕粘连。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。