Thermal protection layer with large length-diameter ratio and preparation process

• Main Authors: LI BAOXING, GU CHENGHUI, XING PENGTAO, YAN NING, ZHU JIAJIA
• Format: Patent
• Language: Chinese; English
• Published: 29.11.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; JET-PROPULSION PLANTS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention provides a thermal protection layer with a large length-diameter ratio and a preparation technology. The thermal protection layer comprises an ablation layer, and a thermal insulation layer is arranged on the outer side face of the ablation layer. The molded surface structure of the ablation layer comprises an ablation layer cylinder section and an ablation layer cone section which are integrally and coaxially connected in sequence; the molded surface structure of the heat insulation layer comprises a heat insulation layer non-uniform thickness section, a heat insulation layer cylinder section and a heat insulation layer cone section which are integrally and coaxially connected in sequence; a heat insulation layer cylinder section is arranged on the outer side surface of the ablation layer cylinder section, and a heat insulation layer cone section is arranged on the outer side surface of the ablation layer cone section; and an ignition lining is arranged on the inner side surface of the ablation