硫化作用

With the help of dynamic mechanical thermal analysis, differential thermal analysis, analysis of curing behaviors and swelling test, the change of structure during the vulcanization of ebonite was analyzed. It is found that the chemical cross-linking in the ebonite trended to descend with degree of vulcanization, while the modification effects of polar groupings on the carbon backbone gradually increased, which dominated its physical and mechanical properties.

通过考察硫化时间对于硬质橡胶结构与性能的影响，结合DMTA、DSC、硫化特性分析、溶胀分析等方法，分析了硬质橡胶的硫化过程中结构的变化，认为在硫化过程中，随着硫化的进行，硬质橡胶中的化学交联作用有下降趋势，极性基团对于碳骨架的改性作用逐渐增加，并对硬质橡胶的物理机械性能起主要决定作用。

PEG1000-1500 can be used as groundmass and lubricant in medicine, textile and cosmetic industry; dispersing agent in coating industry to improve the resin property of water dispersion and flexibility.

PEG1000-1500在医药、纺织、化妆品工业中用作基质和润滑剂、柔软剂；涂料工业中作分散剂，改进树脂的水分散性、柔韧性；油墨中可提高染料的溶解能力，降低其挥发性，在蜡纸和印台油墨中尤为适用；也可在圆珠笔油墨中作调节粘度用；橡胶工业中用作分散剂，以促进硫化作用，以及用作碳黑填充料的分散剂。

The structure of uncured mix and vulcanite, physical and chemical interaction between filler and matrix, mechanical property of composites were investigated It was found and explained that the compact relationship among bound rubber, cross-linkage density and physical property in mineral filler/silicone rubber composite In detail, BR〓, D〓(cross-linkage density using basic solvent as swell liquid) and module have direct relationship, because they all show chemical interaction between filler and matrix from different angles, respectively BR〓(bound rubber in toluene solvent), D〓(cross-linkage density using toluene solvent as swell liquid) and tensile strength have compact relationship also, because they all show total interaction from different angles, respectively

研究了未硫化胶和硫化胶的结构、填料与基体的物理化学作用、及这些结构和作用的表现形式，发现和解释矿物填料/硅橡胶复合材料中结合橡胶、交联密度与复合材料的力学性能密切关系。具体说，BR〓、D〓和弹性模量均从某个侧面反映复合材料中填料与基体间的化学作用，三者的关系比较密切：BR〓、D〓和抗拉强度均反映复合材料中填料与基体间总体相互作用，三者的关系比较密切。

These processes resulted i n the formation of peculiar dunites in the hyperbasite complexes ,development of low-sulfide horizons and hortonolite dunites in the basite-hyp erbasite layered intrusions (platinum-group metal deposits),and specific proces ses of transmagmatic sulfurization of the iron-rich igneous differentiates (Cu -Ni sulfide and Cu-Zn-Pb sulfide ores).

这些作用导致产在超基性杂岩中的特殊纯橄榄岩、基性超基性层状侵入体中的低硫层和铁镁橄榄石纯橄榄岩的形成，以及富铁火成分异岩的透岩浆硫化作用(Cu-Ni硫化物和Cu-Zn-Pb硫化物矿石)。

The effect of the SDT／S on the properties of NR compound was investigated The results showed that SDT／S plays the advanced role in NR compound,in order to keep the vulcanizate properties level as before may decrease some accerlator;the physical properties of overcured vulcanizate,the adhesion strength of optimum cure or overcured valcanizate between rubber and cord were improved by adding 2 phr of SDT／S to NR compound.

研究了SDT／S对天然胶胶料配方各项性能的影响。结果表明：在配方中使用SDT／S，对天然胶胶料起硫化促进作用，为保持原水平的硫化特性，可以适当减少促进剂的用量；可有效提高胶料过硫化条件下的300%定伸应力、扯断强度、邵氏硬度、撕裂性能、磨耗性能，可有效提高正硫化或过硫化条件下的胶料与帘线间的附着力。

The effects of various factors, such as sulfurization time, temperature, sulfurization pressure, the concentration of sulfureted hydrogen, the concentration of hydrogen, granularity of catalyst and so on, are studied.

利用程序升温硫化技术，对负载在不同载体上的Co和Mo系催化剂的硫化过程进行了研究，分析了活性组分Co、Mo在催化剂硫化过程中的形态变化以及催化剂的硫化机理，同时还探讨了载体在催化剂硫化过程中的作用。

By means of UV and fluorescent light exposure accelerated corrosion test,the influence factors of corrosion inhibition on anti- tarnishment of silver antiques were studied with L16(45)orthogonal table in this paper.

1前言硫化作用是银在自然环境中变色的重要原因，而光照又引起了加速腐蚀作用。

The grafting effect and mechanism was charac- terized by FTIR,The heat stability of unvulcanized and dynamical mechanical proper- ty of vulc- lcanizates of SBR and SBR-g- were tested by TG and DMA respectively. medium-resistance properties of SBR and SBR-g- vulcan- izates were also investigated.The results showed that addition of St accelerated GMA grafting onto SBR and control the decomposition of SBR. When the conditions were GMA/St/DCP was 8/4/0.3 and grafting temperature was 160℃.

结果表明，St对提高接枝率、抑制SBR的降解起到了积极的作用；SBR中聚丁二烯的α－H和双键共同参与了GMA/St熔融接枝反应；当SBR/GMA/St/DCP=100/8/4/0.3、接枝温度为160℃时，SBR的接枝率较高（23.78%），SBR–g–硫化胶的拉伸强度和撕裂强度比SBR硫化胶的分别提高了119%和27.4%；SBR–（GMA--co-St）未硫化胶的Tg比SBR未硫化胶的高，而耐热分解性能优于SBR未硫化胶；SBR–g–硫化胶在低温条件下的刚性增大、弹性降低、具有较低的内耗，在常温下的阻尼性能较高，但弹性性能保持较好；SBR–g–硫化胶的耐热稳定性以及耐非极性有机溶剂的性能优于SBR硫化胶。

Due to fluidization, the static bed of sand particles expands and the height of the expanded bed depends upon the fluidizing velocity.

由于硫化作用，静态床沙粒的膨胀和膨胀床的高度主要取决于硫化速度。

Reducing agent carbon reduces oxide of cobalt, nickel and iron,and sulfuring agent Fe_2S forms trickles of matte at high temperature, inthe process of assembling and settling of trickles of matte slag is washed,reduced metals of iron, cobalt and nickel and sulphide in slag are enrichedin the matte to form cobalt matte and be separated from slag due to theirintimity to the matte, washing of the matte and their settling.

在高温下，还原剂碳将钴、镍、铁氧化物还原成金属，同时硫化剂硫铁矿形成锍滴，在锍滴聚集沉降过程中对炉渣进行&洗涤&，由于金属及金属硫化矿的亲锍性，锍体的&洗涤&作用及金属及金属硫化矿的沉降作用使被还原的钴、镍、铁金属及转炉渣中的金属硫化矿富集到锍体中，与转炉渣分离，形成钴冰铜。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。