The aim was to research the sound absorption properties of graded polyurethanes at incident angles.

主要研究梯度聚氨酯在全入射角下的吸声性能.

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Solid polyurethanes are similar to injection moulding materials, and more suited to thinner wall sections.

固体聚氨酯类似注射成型材料, 更适合薄壁截面零件.

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Segmented polyurethanes amorphous or crystalline soft segments as reversible phase and phase can exhibIt'shape - memory properties.

聚氨酯是一种具有微相分离本体结构的多嵌段共聚物,可通过调节原料的组成和配比,得到性能各异的新型功能高分子材料.

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EHC formulates polyurethanes in a broad range of durometers ( hardnesses ), depending on your requirements.

依合斯根据您的需求制造不同 硬度 的轮子.

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The number - average molecular weight of poly ethylene - glycol - adipate diols didn't affect the heat decompose temperatures of polyurethanes.

聚己二酸乙二醇酯二元醇的分子量对聚氨酯的热分解温度影响不明显.

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