Evaluation of Thermal Diffusivity of Rocket Nozzle Materials.

Sato, Yutaka; Ohtake, Kunihiko; Shimada, Toru; Satô, Eiichi

doi:10.2963/jjtp.17.199

Cited by 4 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both phenolic resin and RF resin are flame resistant due to their molecular structure and thus can be used as heat-resistant/heat-shielding materials for space hardware applications. − If the thermal capacity of RF resin is the same as that of phenolic resin 1.6 kJ kg –1 K –1 , then the thermal diffusivity of RB-3.6-2 was 0.9 m 2 s –1 . This value is close to that of heat-resistant cork-phenol resin composites and carbon composites used for rocket components. , By optimizing the molecular structure of the resin in the skeletal phase, it can be expected that these composite materials will be further improved in the future. Flame resistance was also investigated by applying a liquefied natural gas (LNG) burner flame at ∼1700 °C to the RF-boehmite nanofiber monolith (Figure , Movie, Supporting Information).…”

supporting

confidence: 66%

“…This value is close to that of heat-resistant cork-phenol resin composites and carbon composites used for rocket components. 31,32 By optimizing the molecular structure of the resin in the skeletal phase, it can be expected that these composite materials will be further improved in the future. Flame resistance was also investigated by applying a liquefied natural gas (LNG) burner flame at ∼1700 °C to the RF-boehmite nanofiber monolith (Figure 4, Movie, Supporting Information).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of Boehmite Nanofiber Internally-Reinforced Resorcinol-Formaldehyde Macroporous Monoliths for Heat/Flame Protection

Hayase

2018

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

By distributing boehmite nanofibers to a resorcinol-formaldehyde (RF) skeletal phase formed by phase separation in an aqueous sol, composite macroporous monoliths were produced by performing gelation, aging, and drying processes at 60 °C. In the nanofiber-reinforced structure, boehmite nanofiber is arranged in parallel within the RF skeleton and showed high Young’s modulus against uniaxial compression for their bulk density. These materials can be expected to be applied to heat/flame protection materials using their heat insulating properties and high flame resistance.

show abstract

supporting

confidence: 66%

mentioning

confidence: 99%

Fabrication of Boehmite Nanofiber Internally-Reinforced Resorcinol-Formaldehyde Macroporous Monoliths for Heat/Flame Protection

Hayase

2018

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…The preform is carbonized in nitrogen atmosphere. The impregnation and carbonization are repeated to make the preform dense to bulk density of 1.60 g/cm 3 . The maximum temperature is 2000 °C on heat treatment.…”

Section: Methodsmentioning

confidence: 99%

“…Sato et al [3] use a laser flash method to measure the thermal diffusivity of three-dimensional woven C/C composite in the direction parallel to fiber. The laser flash method requires high power source to heat a sample instantaneously.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Thermal Diffusivity in Principal Direction of Orthotropy Material by a Step Heating Method

Matsushima

2022

MSF

View full text Add to dashboard Cite

Carbon fiber reinforced carbon composites (C/C composites) have been important structural materials at high temperatures. C/C composites are anisotropic solids and their thermal diffusivity is the second-order tensor of which components are called thermal diffusivity coefficients. Therefore, the purpose of study is to measure the thermal diffusivity in direction parallel to fiber and that in direction perpendicular to fiber by using the step heating method. This report demonstrates the correctness of the method to determine the thermal diffusivity in principal direction by comparing the time change of temperature observed by the experiment at room temperature for the C/C composite with the mathematical solution for the heat conduction under one dimension.

show abstract

“…This value is close to that of heat resistant cork-phenol resin composites and carbon composites used for rocket components. [33][34] I anticipate further improving our materials by optimizing the molecular structure of the resin in the skeletal phase.…”

Section: Main Textmentioning

confidence: 99%

Boehmite Nanofiber-Reinforced Resorcinol-Formaldehyde Macroporous Monoliths for Heat/Flame Protection

Hayase¹

2018

Preprint

View full text Add to dashboard Cite

By distributing boehmite nanofibers (BNFs) to a resorcinol-formaldehyde (RF) skeletal phase formed by phase separation in an aqueous sol, composite macroporous monoliths have been produced. The nanofiber reinforced monoliths have a skeleton in which BNF is arranged in parallel within the RF structure, and showed high Young's modulus against uniaxial compression for their bulk density. These materials can be expected to be applied to heat/flame protection materials using heat insulating properties and high flame resistance.<br>

show abstract

Evaluation of Thermal Diffusivity of Rocket Nozzle Materials.

Cited by 4 publications

References 2 publications

Fabrication of Boehmite Nanofiber Internally-Reinforced Resorcinol-Formaldehyde Macroporous Monoliths for Heat/Flame Protection

Fabrication of Boehmite Nanofiber Internally-Reinforced Resorcinol-Formaldehyde Macroporous Monoliths for Heat/Flame Protection

Measurement of Thermal Diffusivity in Principal Direction of Orthotropy Material by a Step Heating Method

Boehmite Nanofiber-Reinforced Resorcinol-Formaldehyde Macroporous Monoliths for Heat/Flame Protection

Contact Info

Product

Resources

About