High-thixotropy adhesive for bonding multi-layer material of deep sea high-pressure container

• Main Authors: DI CHENYANG, HUANG JINLONG, DING XIAODE, ZHU YUDUO, TANG JIJUN, TANG YINHUI, ZUO XINLONG, LUO WEIQI, TENG YUN, ZHOU LIJUN, GAO GUICHENG
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2023
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES

The invention discloses a high-thixotropy adhesive for bonding a multilayer material of a deep sea high-pressure vessel, which comprises the following preparation raw materials: epoxy resin including 50-70 parts by mass of bisphenol A epoxy resin and 30-50 parts by mass of trifunctional epoxy resin; 50-100 parts by mass of an amine curing agent; the curing accelerator accounts for 1-3% of the mass of the epoxy resin; the filler accounts for 33-55% of the mass of the epoxy resin; the coupling agent accounts for 1-3% of the mass of the epoxy resin; and the reactive diluent accounts for 1-6% of the mass of the epoxy resin. The prepared epoxy resin-based adhesive has high toughness, high cohesiveness, high hydrophobicity and good thixotropy, and after the adhesive is applied to a multi-layer structural plate of a bathyscaph main body in an adhesive mode, the service life of the adhesive under the high pressure of 114.8 MPa (deep sea 7500 m) can reach 3 months (90 days) through experiments, and the use requirement