A study on improvement of adhesion HTPB propellant/liner/insulation

Park, Sung-Jun; Song, Jing; Park, Euiyong; Rho, Taeho; Choi, Sang-Haeng

doi:10.6108/kspe.2019.23.4.092

Cited by 3 publications

(1 citation statement)

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“…The liner has the most excellent adhesive strength when it is less hardened compared with when it is completely hardened. In addition, it is generally known that the lower the hardness of the liner, the higher is the adhesive strength [20, 21]. To achieve a strong adhesive strength after the adhesion is completed, it is more advantageous when the adhesive strength at the interface between the adhesive and the substrate molecules is greater than the cohesiveness between the adhesive's own molecules [3].…”

Section: Resultsmentioning

confidence: 99%

The Curing Reaction Rate of the Rocket Motor Liner Based on the Aging of a Curing System

Park

2021

Propellants Explo Pyrotec

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In this study, the hardening reaction speed of a rocket motor liner based on the Aging of a curing system comprised of a hardener and hardening catalyst was investigated. With the increasing Aging time of the curing system, the liner viscosity build-up was accelerated. The raw material having the biggest impact on the hardening reaction of the curing system's liner was triphenylbismuth (TPB). Stirring isophorone diisocyanate and TPB form an ac-tivated complex, and the activated complex facilitates the urethane reaction. If TPB is ligand bound with isocyanate, it forms a TPB-isocyanate complex. This is a type of TPB's oxide, and the formation of the activated complex is visible through changes in its color. In addition, lining hardening time can be adjusted by the Aging period of the curing system through used in this study, and the adhesive strength with the liner and propellant can be improved.

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Section: Resultsmentioning

confidence: 99%

The Curing Reaction Rate of the Rocket Motor Liner Based on the Aging of a Curing System

Park

2021

Propellants Explo Pyrotec

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Study on the Improvement of Adhesion Strength between Composite Solid Propellant, Liner, and Heat‐Resistant Material

Park

Choi

Lee

et al. 2020

Propellants Explo Pyrotec

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This study was conducted to improve the adhesion strength between a propellant, liner, and heat‐resistant material. As the drying time of the heat‐resistant material increased, the adhesion strength between the propellant, liner, and heat‐resistant material improved. Further, the surface of the heat‐resistant material was subjected to buffing treatment to improve the adhesion strength. In addition, as the thickness of the heat‐resistant material increased, the adhesion strength degraded. Moreover, the adhesion strength was improved by increasing the thickness of the liner on the heat‐resistant material. Besides, the adhesion strength slightly reduced with an increase in the plasticizer content. The liner curing time was an important factor affecting the adhesion strength, and an optimum liner curing time was obtained. In this study, the adhesion strength was improved by applying a barrier coat between the heat‐resistant material and liner. The adhesion was further improved when the heat‐resistant material was buffed.

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Composite Solid Propellants for Propulsion System Including a Yellow Iron Oxide (2)

Park¹,

Kim²,

Park³

et al. 2020

KSPE

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A study on improvement of adhesion HTPB propellant/liner/insulation

Cited by 3 publications

References 0 publications

The Curing Reaction Rate of the Rocket Motor Liner Based on the Aging of a Curing System

The Curing Reaction Rate of the Rocket Motor Liner Based on the Aging of a Curing System

Study on the Improvement of Adhesion Strength between Composite Solid Propellant, Liner, and Heat‐Resistant Material

Composite Solid Propellants for Propulsion System Including a Yellow Iron Oxide (2)

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