Often used in combination with phenolic resins which impart some rigidity and add strength and fade resistance.

经常用于与酚醛树脂的使材料有一定的刚性，提高强度和耐磨性用于弹性的刹车带材料。

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Aluminum Oxide Specific gravity 2.4 Moh hardness 3. More a filler than an abrasive. Tends to fade, but has good wear resistance. Will polish the opposing surface.

氢氧化铝比重2.4莫氏硬度3。比磨料加得更多的填充物。有衰退趋势，但耐磨性好。将抛光对偶。

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They are thought as high quality products for their densities are well distributed; aperture is proper, high ductile, high oil resistance, not easy to corrode and fade away, easy to wash and soft.

毛细孔分布均匀、孔径适宜、韧度高、耐油性高、不易腐蚀、容易清洗干、不易变色、性质温和柔软，是美容界认定的一种高级产品。

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They are thought as high quality products for their densities are well distributed; aperture is proper, high ductile, high oil resistance, not easy to corrode and fade away, easy to wash and soft.

毛细孔分布均匀、孔径适宜、韧度高、耐油性高、不易腐蚀、容易清洗干、不易变色、性质温和柔软，是美容界认定的一种高级产品。

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