Low-temperature oil-resisting nitrile rubber and preparation method and application thereof

Abstract

The invention discloses low-temperature oil-resisting nitrile rubber and a preparation method application thereof, and belongs to the technical field of rubber sealing materials. The rubber is prepared from, by weight, 80-120 parts of siloxane modified butadiene-acrylonitrile rubber, 5-10 parts of zinc oxide, 0.5-1.5 parts of stearic acid, 1-3 parts of an anti-aging agent NAPM, 80-120 parts of composite reinforcing agent, 1-5 parts of composite sulfurizing agent, 1-3 parts of an accelerant and 20-40 parts of TP-90 B auxiliaries. The invention further provides the preparation method of the low-temperature oil-resisting nitrile rubber and application of the low-temperature oil-resisting nitrile rubber in an aviation sealing material. The low-temperature oil-resisting nitrile rubber has the excellent low temperature resistance and good oil resistance, has the good physical and mechanical properties and bonding strength, is applicable to the environment under the temperature of subzero 70 to 100 DEG C, achieves the purposes of onboard environment conditions and sealing non-leakage, ensures safety operation of airborne equipment, and meets the requirement for defense-related science and technology weaponry development.

Description

technical field [0001] The invention belongs to the technical field of rubber sealing materials, in particular to a low-temperature oil-resistant nitrile rubber and its preparation method and application. Background technique [0002] In the field of aerospace, when the aircraft flies at an altitude of 8,000 meters, the ambient temperature will vary between -70 and 100°C; in this environment, oil-resistant sealing materials are required to have excellent oil resistance and Very good low temperature resistance. At present, the ordinary nitrile rubber materials, fluororubber materials and fluorosilicone rubber materials used today cannot meet the requirements of the aerospace field, which brings great safety hazards to aircraft and limits national defense technology and The development of weapons and equipment. Moreover, the production cost of existing fluorosilicone rubber materials is extremely high, and large-scale industrial production has not yet been formed; there are ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a low-temperature oil-resistant nitrile rubber and its preparation method and application, which solves the problem that the oil resistance, low-temperature resistance and physical and mechanical properties of rubber sealing materials in the prior art cannot meet the needs of aerospace sealing materials The problem

[0005] The low-temperature oil-resistant nitrile rubber of the present invention has excellent low-temperature resistance, is suitable for -70~100°C environmental conditions, has good oil resistance, and solves the problem of airborne extremely low-temperature environmental conditions. It is used in 10# aviation The hydraulic oil can withstand a pressure of 13MPa and the seal does not leak, which solves the airborne sealing problem; the low-temperature oil-resistant nitrile rubber has low liquid resistance, and has good resilience and sealing at an altitude of 8,000 meters and at a low temperature of -70°C Performance ensures the safe operation of airborne equipment, improves the flight safety of aircraft, meets the needs of the development of national defense technology and weaponry, and fills the gap in high-low temperature resistant rubber materials