Method for bonding large-plasticization azide polyether propellant and thermal insulation layer

• Main Authors: WEN YANWEI, MAO CHENGLI, ZHAN GUOZHU, ZUO HAILI, MA WENXIU, HE JIANSEN
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2024
• Subjects: BLASTING; CHEMISTRY; COMBUSTION ENGINES; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; EXPLOSIVES; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART); HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; JET-PROPULSION PLANTS; LIGHTING; MATCHES; MEANS FOR GENERATING SMOKE OR MIST; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WEAPONS

The invention relates to a method for bonding a large plasticized azide polyether propellant and a heat insulation layer, and belongs to the field of solid rocket engine interface bonding, the plasticization ratio of the adopted large plasticized azide polyether propellant is 1.4-2.0, the adopted lining is an HTPB lining or PBT lining, the adopted heat insulation layer is a phenylproxazine resin modified ethylene-propylene-diene monomer heat insulation material, the vulcanization temperature is 150-170 DEG C, and the vulcanization time is 2-3 hours. The vulcanization pressure is 5-15 MPa, the vulcanization time is 30-120 min, and the ethylene-propylene-diene monomer heat insulation layer is modified by adopting the benzoxazine resin. Compared with the prior art, the high-plasticity azide polyether propellant has the advantages that the unfavorable influence of small molecule migration on the interface bonding performance is remarkably reduced, the ratio of the combined tear strength to the strength of the pro