查询词典 foaming

The rationality and economy of reformation for PU foaming machinery using cyclopentane as foaming agent were introduced.

阐述了采用环戊烷替代CFC-11发泡剂的聚氨酯发泡机改造的合理性和经济性。

Experiment results indicated that the foaming flowability of polymeric MDI was almost independent of 2,4'-MDI content in both CFC and cyclopentane foaming systems, but increase in 2,4'-MDI content resulted in linear rise of demoulding deform...

实验结果表明，当聚合MDI与 2种组合聚醚进行发泡时，2 ，4' MDI含量对聚合MDI的发泡流动性影响较小，而对后熟化性能的影响明显，随 2 ，4' MDI含量的增加，脱模变形呈直线上升的趋势。

The Ni-based extensive hydrogenation catalyst and the process developed by us were applied to the industrial equipment with an annual production capacity of 20 thousand tons of foaming agents in the Meilong Cyclopentane Co., Ltd of Jilin Chemical Industry Co., Ltd. In 2002, the feed and trial was successful with one attempt and produced high-quality cyclopentane foaming agents.

我们开发的 Ni 系深度加氢催化剂及其工艺在吉林化学工业公司美龙环戊烷公司年产2万吨发泡剂工业装置上应用，于2002年一次投料试车成功，生产出高质量的环戊烷发泡剂。

Basing on thermo-simulation in laboratory, experimental study was accomplished to analyze the function mechanism of foaming agent and the foaming influence of its decompound production. The results indicated: function of foaming agents was due to their decompound and inter-reaction at high temperature. And some decompound production of foaming agent can reinforce the foaming ability of refining slag.

采用实验室模拟的方法，针对钢包精炼炉常用发泡剂的作用机理以及发泡剂高温分解产物对熔渣泡沫化性能的影响进行了研究，结果表明：发泡剂的作用主要来源于其组成物质的高温分解以及相互反应；发泡剂分解后部分产物作为高熔点粒子存在于熔渣中，提高了精炼渣的泡沫化性能。

The influence of high temperature and high pressure on foaming agent's properties in opened and closed system, and influence of the change of foaming agent's properties on foaming capacity and foam stabilizing capacity are also studied. The multiple regression theory is used to establish the quantitative characteristic functions of foaming agent versus temperature and pressure. Based on the Gibbs Principle, the quantitative characterization is carried out on relation of foam system's free energy versus its surface tension, surface area and concentration, and the analysis of energy concluded that the disintegration of the foam is inconvertible. At the same time, the influence of change of foam's shape and structure on distribution of reservoir temperature and pressure is qualitatively described, and the coupling mechanism between temperature field, pressure field and chemical field is systematically expounded.

同时，研究了不封闭体系、封闭体系下高温、高压对发泡剂性质的影响，以及发泡剂性质的改变对其发泡性能、稳泡性能的影响；采用泡沫实验的相关结果，运用多元回归理论，建立温度、压力与发泡剂浓度的定量表征函数；基于Gibbs原理，对高温、高压下泡沫体系的自由能与其表面张力、体系中液体的表面积以及浓度关系进行定量化的表征研究，从能量的角度得出了泡沫衰变过程具有不可逆性；同时定性地描述了泡沫形态、结构的变化对油藏温度和压力分布的影响，系统地阐述了温度场、压力场、化学场间的耦合作用机理。

The present invention adopts polyvinyl perchloride and organosilicon modified acrylic resin as main filming material and adds cyanuramide phosphate and expanding graphite into common polytriammonium phasphate as fireproof assistant to constitute foaming material. The present invention has greatly raised foaming rate and the foamed layer has thickness of 30-50 times the original coating thickness and fireproof limit up to 90 min.

本发明采用高氯化聚乙烯和自行合成的有机硅改性丙烯酸酯树脂为主要成膜物质，并在通常所用的聚磷酸铵类防火助剂的基础上，加入三聚氰胺磷酸盐和可发性膨胀石墨作为发泡材料组成，大大提高了涂层的发泡率，发泡层厚度可达原涂层厚的30～50倍，耐火极限可达90min(涂层厚度2mm)。

This solvent has good regeneration property, low foaming tendency in the sweetening process and anti-foaming ability.

该脱硫溶剂的再生性能良好，在脱硫过程中发泡倾向低，具有较强的抗发泡能力。

It was found that increasing pressure for blank can improve the compactedness of blanks so as to make foam aluminium materials with homogeneous pores. Foaming temperature, as one of the main influencing factors on foaming process, should be controlled higher than the melting point of Al or Alalloy to a certain extant in order to keep a reasonable viscosity. Thus, the foam aluminum with homogeneous pores and high porosity is available. As shown by experiments, such materials should be made on conditions that they shall be protected with molten salt under 300?MPa pressure at 675～680?℃.

研究了粉末冶金法制备泡沫铝材料的方法讨论了发泡过程中的保护方式、制坯压力、发泡温度等参数对泡沫铝体积质量、孔隙率、孔结构的影响，并对发泡机理进行了探讨增大制坯压力使得金属坯致密，可以得到孔结构均匀的泡沫铝材料；发泡温度是影响发泡的主要因素之一，发泡温度控制在高于铝或铝合金熔点，同时保持熔体具有一定粘度的范围内，能够得到孔结构均匀、高孔隙率的泡沫铝材料实验结果表明：采用熔盐保护方式，在300MPa的压力下，温度在675～680℃时，可得到孔径均匀、孔隙率高的泡沫铝材料。

The cell structure refining mechanism shows that adding Mg decreases the surface tension of the aluminum alloy melt and hence to increase the bubble stabilization. Adding nuclear forming agent increases the nuclei of heterogeneous nucleation. Adding pre-heating foaming agent postpones its decomposition, hence to increase the uniform of foaming agent dispersion. Stirring within the middle stage of foaming agent rapid decomposition breaks up big bobbles to fine bobbles, hence to reduce mean cell diameter.

孔径细化机理分析表明，Mg的作用在于降低铝熔体的表面张力，提高气泡稳定性；形核剂的作用在于增加气泡非均匀形核的核心；发泡剂氧化预处理可以推迟和延缓发泡剂的分解，提高发泡剂的分散均匀性；搅拌发泡的作用是在发泡剂剧烈分解的中段，通过搅拌搅碎气泡，减小平均孔径。

The different foaming performance of sodium laureth sulfate, cocamidopropyl betaine and their compounds under different active concentrations, water hardnesses and temperatures were investigated. The results show that the foaming performance of SLES doesn't change under different water hardness, but that of CAB changes with different concentration, and the compounds of SLES and CAB have much better foaming performance and synergetic effect under different conditions.

通过实验主要考察了在不同活性物浓度，不同水硬度条件和不同体系温度下，SLES、CAB和它们的复合物的泡沫性能，结果表明，SLES的泡沫性能受硬水影响不大，CAB的泡沫性能随浓度的变化而有所不同，SLES和CAB的复合物有更优秀的泡沫性能，表现出良好的协同增效性。

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。