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METHOD OF PREPARING SILICAS, SILICAS WITH SPECIFIC PORE-SIZE AND/OR PARTICLE-SIZE DISTRIBUTIONS, AND THE USES THEREOF, IN PARTICULAR FOR REINFORCING POLYMERS
METHOD OF PREPARING SILICAS, SILICAS WITH SPECIFIC PORE-SIZE AND/OR PARTICLE-SIZE DISTRIBUTIONS, AND THE USES THEREOF, IN PARTICULAR FOR REINFORCING POLYMERS
The invention relates to a novel method of preparing silicas and to highly-structured silicas having the following characteristics: a specific surface area CTAB (SCTAB) of between 40 and 525 m2g/g; a specific surface area BET (SBET) of between 45 and 550 m2g; an object size distribution width Ld ((d84−D16)/d50), which is measured by XDC particle size analysis after deagglomeration with ultrasound, of at least 0.91; and a pore-size distribution such that ratio V(d5−d50)/V(d5−d100) is at least 0.66. The invention also relates to the use of said silicas as polymer reinforcing fillers.
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机译:本发明涉及一种制备二氧化硅的新方法,并涉及具有以下特征的高结构化二氧化硅:比表面积CTAB(S CTAB Sub>)为40至525m 2 Sup > g / g;比表面积BET(S BET Sub>)在45和550 m 2 Sup> g之间;超声解聚后通过XDC粒度分析测得的物体尺寸分布宽度Ld((d84-D16)/ d50)至少为0.91;且孔径分布使得比率V(d5-d50)/ V(d5-d100)至少为0.66。本发明还涉及所述二氧化硅作为聚合物增强填料的用途。
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