Development tendency of mechanical properties is: density increase oil content ratio decreases, Brinall hardness increases, crushing strength goes down first and then goes up.

机械性能的变化趋势是：密度增加，含油率下降，布氏硬度增加，而压溃强度先降低后增加。

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PEI 5% in the content, the composite material has better mechanical properties, bending strength increase by 28.0%, impact strength 26.1%.

在PEI含量5%左右时，复合材料的综合力学性能较佳，弯曲强度提高了28.0%，冲击强度提高了26.1%。

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With the increase of concentration, the breakthrough time and sulfur capacity were significantly increased, but the mechanical strength had declined somewhat.

随着含量的增加，脱硫剂穿透时间和一次硫容都明显增加，但是机械强度却有所下降。

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