泡沫材料

When the carbon microsphere s are graphitized under the protection of Ar at 2100～2600℃,closed-cell carbon microspheric form of graphitic structure is produced.

依据微胶囊化原理，用热固性线型酚醛树脂制得微胶囊，加热去除囊芯后用作先驱体，在N2保护下进行900~1100℃的碳化处理得到具有无定型碳结构的闭孔碳微球，然后在Ar气保护下进行2100~2600℃的石墨化处理，得到具有石墨结构的闭孔微球碳泡沫材料。

For elastoplastic foams, the responses of the materials due to the multiaxial mechanical loading are analyzed.

在弹塑性行为和唯象模型方面，分析了开孔泡沫材料在多轴载荷下的弹塑性宏观力学响应。

With the increase of content of triamine monomer, the mechanical property of polyimide foams is improved, and the glass transition temperature of polyimide foams increases.

随着三胺单体含量的增加，聚酰亚胺泡沫材料的力学性能和玻璃化转变温度得到提高。

Adopt SN and ASA2 be antistatic agent, studied an impact of two kinds antistat agent over polyethylene foam material volume electric resistance..

采用十八烷基二甲基羟乙基季铵硝酸盐和硬酯酸单甘油脂混合物作为抗静电剂，研究了两种抗静电剂对聚乙烯泡沫材料体积电阻的影响。

Finally, various applications of metal foams are discussed.

最后简要总结了金属泡沫材料的应用。

Applications for these foams are emerging in the automotive, food, packaging and construction sectors.

这些泡沫材料正不断应用在汽车、食品、包装和建筑等领域。

The foams vary in density so as to obtain different degrees of softness to suit all tastes.

不同密度的泡沫材料以适应对柔软程度的各种不同需求。

In contrast, the compressive plateau stress of the foams is less sensitive to the imperfections.

研究结果表明，微结构的屈曲是泡沫材料在压缩过程中起主要作用的变形机理。

As the metal is poured, the foam vaporizes, and the metal takes its place.

当金属浇入时，泡沫材料蒸发，金属取代其位置。

B. Polyurethane products, including paints, varnishes, and foams

b。聚氨酯类产品，包括表面涂料漆类和泡沫材料

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。