Correlation of Enhanced Strength and Internal Structure for Heat‐Treated Submicron Stöber Silica Particles
Correlation of Enhanced Strength and Internal Structure for Heat‐Treated Submicron Stöber Silica Particles
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热处理亚微米二氧化硅颗粒的增强强度与内部结构的相关性
DOI:
10.1002/ppsc.201300306
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发表时间:
2014
影响因子:
2.7
通讯作者:
J. Schmidt
中科院分区:
文献类型:
--
作者:
S. Romeis;J. Paul;M. Hanisch;V.R.R. Marthala;M. Hartmann;R.N. Klupp Taylor;J. Schmidt
The Stöber–Fink–Bohn (SFB) method allows the synthesis of spherical silica particles over a wide size range. Owing to the complex formation mechanism, the internal structure and related mechanical properties are not well understood. Within this account, the internal structure of synthesized SFB particles is changed systematically by heat treatments. Characterization by colloid titration, infrared spectroscopy, and solid‐state nuclear magnetic resonance spectroscopy and the assessment of mechanical properties for single particles by in situ micromanipulation shed light on structure–property relations. Over the course of heat treatment, SFB particles become denser and owing to condensation of internal hydroxyl groups, the cross‐linking of the silica network is enhanced. The observed chemical and structural changes are reflected by the mechanical properties of the particles: starting from a low Young's modulus and hardness, clearly below the bulk properties of fused silica, both values are increasing over the course of the thermal treatment. Hardness for fused silica is approached after a treatment at 800 °C and exceeded after a treatment at 1000 °C. Young's modulus approaches the bulk value. Furthermore, a significant plasticity is found: the sustained deformations are extremely high, and thus silica spheres with enhanced strength have been obtained by the thermal treatment.
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DOI:
10.1016/0166-6622(86)80289-x
发表时间:
1986-08
期刊:
Colloids and Surfaces
影响因子:
--
作者:
A. Lecloux;J. Bronckart;Francis Noville;C. Dodet;P. Marchot;J. Pirard
通讯作者:
A. Lecloux;J. Bronckart;Francis Noville;C. Dodet;P. Marchot;J. Pirard
DOI:
--
发表时间:
1964
期刊:
影响因子:
--
作者:
T. Takamura;H. Yoshida;Kiyokatsu Inazuka
通讯作者:
Kiyokatsu Inazuka
DOI:
--
发表时间:
1968
期刊:
影响因子:
--
作者:
J. Lyklema
通讯作者:
J. Lyklema
影响因子:
3.9
作者:
M. Cerruti;C. Morterra
通讯作者:
C. Morterra
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Jianying He;Zhiliang Zhang;H. Kristiansen
通讯作者:
H. Kristiansen