<trans-title>Effect of Organic-inorganic Crosslinking Degree on the Mechanical and Thermal Properties of Aerogels</trans-title>

Ze ZHANG; Xiaodong WANG; Jun SHEN

doi:10.15541/jim20190186

Journal of Inorganic Materials, Volume. 35, Issue 4, 454(2020)

Effect of Organic-inorganic Crosslinking Degree on the Mechanical and Thermal Properties of Aerogels

Ze ZHANG... Xiaodong WANG* and Jun SHEN* |Show fewer author(s)

Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China

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Figures & Tables(9)

1. Photograph of silicon-based aerogels Samples 1-4 are from left to right in sequence

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2. SEM images of silicon-based aerogels

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3. N₂ adsorption/desorption isotherms (a-b) and BJH pore size distribution (c-d) of silicon-based aerogels

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4. FT-IR spectra of silicon-based aerogels

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5. Skeleton structure of 4 silicon-based aerogels obtained from (a) TEOS, (b) MTMS, (c) mixed precursor of MTMS and DMDMS, and (d) VMDMS

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6. ²⁹Si MAS NMR spectra of silicon-based aerogels

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7. TG curves of silicon-based aerogels

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8. Stress-strain curves of silicon-based aerogels

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Table 1. Physical properties of silicon-based aerogels

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Table 1. Physical properties of silicon-based aerogels

Sample	ρ^a/(g·cm^-3)	S_BET^b/(m²·g^-1)	d^c/nm	ε^d/(cm³·g^-1)	λ^e/(W·m^-1·K^-1)	R^f/%	Y^g/MPa
1	0.194	843	20.22	4.900	0.036	10%	0.71
2	0.192	1165	18.23	3.600	0.034	20%	0.82
3	0.156	34	1.72	0.025	0.041	27%	9.54×10^-3
4	0.188	1403	16.31	3.700	0.032	100%	4.51

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Ze ZHANG, Xiaodong WANG, Jun SHEN. Effect of Organic-inorganic Crosslinking Degree on the Mechanical and Thermal Properties of Aerogels[J]. Journal of Inorganic Materials, 2020, 35(4): 454

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