A fire-resistant hydraulic fluid is disclosed which has an improved response to heat and flame under controlled conditions and a high degree of flame propagation resistance. The safety hydraulic fluids of the instant invention are made of at least a polyalkylene glycol, an ester and an antioxidant. Depending on the specific use, the inventive hydraulic fluid may further contain other additives such as e.g. anti-rust agents, anti-wear agents and viscosity index improvers.
A process for making the novel safety hydraulic fluid is also disclosed.
本发明公开了一种抗燃液压油,它在受控条件下对热量和火焰的反应更佳,并具有很强的抗火焰传播能力。本发明的安全液压油至少由聚亚烷基二醇、
酯类和
抗氧化剂制成。根据具体用途,本发明的液压油还可能含有其他添加剂,如防锈剂、抗磨剂和粘度指数改进剂。
此外,还公开了一种新型安全液压油的制造工艺。