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Composition of lubricating grease for protecting bridge cable anchor system

A technology for lubricating grease and bridge cables, which is applied in the field of lubricating grease and its preparation for the protection of anchorage ends of bridge cables, and can solve problems such as leakage of semi-fluid lubricating grease

Inactive Publication Date: 2013-09-25
天津市津冠润滑脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the leakage problem of semi-fluid grease in the prior art, and provide a grease for the protection of bridge cable anchorage systems, which has anti-corrosion and anti-rust performance, especially unique sealing performance It can be used in the case of poor sealing between the anchorage end of the bridge building and the rock and soil, and has the functions of water resistance, sealing, rust prevention and corrosion prevention, and can ensure the protection requirements of the bridge building components

Method used

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  • Composition of lubricating grease for protecting bridge cable anchor system

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of this lubricating grease comprises the following steps: first, 480g base oil (paraffinic base oil, 100 ℃ kinematic viscosity is 16.0mm 2 / s) into the kettle, raise the temperature to about 120°C, put in 200g thickener atactic polypropylene until it is completely melted, keep the temperature of the material in the range of 110-130°C for about 10min, then put in 160g of microcrystalline wax (70# , drop melting point is 67°C) until it is completely dissolved, keep it for about 60min. Then add 3.5g of diphenylamine, 16g of barium petroleum sulfonate, and 16g of isobutylene sulfide successively to dissolve them all, and stir at this temperature for about 60 minutes, and then cool down naturally to below 90°C to leave the kettle. List its performance in Table 1.

Embodiment 2

[0027] The preparation method of this lubricating grease comprises the following steps: first, 480g base oil (comprising 336g paraffin base oil, 40 ℃ kinematic viscosity is 601mm 2 / s, and 144g polyalphaolefin, the kinematic viscosity at 40°C is 396mm 2 / s) into the kettle, raise the temperature to about 120°C, put in 200g thickener atactic polypropylene until it is completely melted, keep the temperature of the material in the range of 110-130°C for about 10min, then put in 160g of microcrystalline wax (70# , drop melting point is 67°C) until it is completely dissolved, keep it for about 60min. Then add 3.5g of diphenylamine, 16g of barium petroleum sulfonate, and 16g of isobutylene sulfide successively to dissolve them all, and stir at this temperature for about 60 minutes, and then cool down naturally to below 90°C to leave the kettle. List its performance in Table 1.

Embodiment 3

[0029] The preparation method of this lubricating grease comprises the following steps: first, 480g base oil (paraffinic base oil, 100 ℃ kinematic viscosity is 16.0mm 2 / s) put into the kettle, raise the temperature to about 120°C, put in 200g thickener atactic polypropylene until completely melted, keep the temperature of the material in the range of 110-130°C for about 10min, then put in 160g of microcrystalline wax (85# , drop melting point is 67°C) until it is completely dissolved, keep it for about 60min. Then add 3.5g of diphenylamine, 16g of barium petroleum sulfonate, and 16g of isobutylene sulfide successively to dissolve them all, and stir at this temperature for about 60 minutes, and then cool down naturally to below 90°C to leave the kettle. List its performance in Table 1. List its performance in Table 1.

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Abstract

The invention relates to lubricating grease for protecting a bridge cable anchor system and a preparation method thereof. The lubricating grease comprises the following components in weight percentage: 55.0-79.0% of base oil, 10.0-30.0% of hydrocarbyl thickening agent, 6.0-28.0% of thickener, 1.5-3.0% of antirust agent, 0.25-0.6% of antioxidant and 1.0-3.0% of extreme pressure agent, wherein the sum of the weight percents of the components is 100%, and the base oil is mineral base oil or synthesis base oil with the kinematic viscosity of 150-700mm<2> / s at the temperature of 40 DEG C. The lubricating grease can be used under the condition that an anchoring end of a bridge construction and rock are poorly sealed, water-resistant, sealing, anti-rust and antiseptic effects are achieved, and protection requirements of a bridge construction component can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of metal protection lubricating grease, and in particular relates to a lubricating grease used for the protection of anchorage ends of bridge cables and a preparation method thereof. Background technique [0002] Bridge cables are the main load-bearing structures of modern long-span bridges—suspension bridges, cable-stayed bridges and arch suspension bridges. It can be said that bridge cables are the lifelines of bridges. It bears dynamic and static loads for a long time, and is exposed to wind, rain, humidity and polluted air. The structure of the cable structure, especially the anchor head of the prestressed tendon, is complex. There are high stress contact problems and contact gaps between the steel backing plate and the anchorage and the prestressed tendon. The former is often prone to contact corrosion between different materials, while the latter is prone to crevice corrosion. Both of these corrosions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06
Inventor 闫洪崔彦兵
Owner 天津市津冠润滑脂有限公司