CN1417309A

CN1417309A - Friction-increasing grease

Info

Publication number: CN1417309A
Application number: CN 02147785
Authority: CN
Inventors: 曹文华; 胡汉国; 郭巧玲
Original assignee: Sinopec Luoyang Petrochemical Engineering Corp; China Petrochemical Corp
Current assignee: China Petrochemical Corp; Sinopec Luoyang Guangzhou Engineering Co Ltd
Priority date: 2002-12-02
Filing date: 2002-12-02
Publication date: 2003-05-14
Anticipated expiration: 2022-12-02
Also published as: CN1177021C

Abstract

The friction-increasing grease has the main compoents including base oil with arene cnotent of 60-100 wt% and kinematic viscosity of 5-30 cSt; friction-increasing agent being resin with arene and with softening point of 100-150 deg.c; viscosity-temp. characteristic modifier of low molecular weight chain hydrocarbon polymer of number-average molecular weight of 1000-400000; and antirust, plasticizer and dropping point raising agent. The base oil may be arene-rich hydrocarbon oil as side product of oil refinery. The present invention has high friction coefficient, low cost, and good compatibility with PVC cushion, polyurethane cushion, etc.

Description

A kind of Friction-increasing grease

Technical field

The present invention relates to a kind of lubricant, be specifically related to a kind of Friction-increasing grease.

Background technology

At present, Friction-increasing grease is mainly used in the protection of the friction winding wireline that windlass, elevator etc. are used.As fiber core grease, surperficial fat.It is mainly extracted oil out with petroleum residue or residue and makes base oil, adds the viscosity temperature characteristic improving agent, increases compositions such as the agent that rubs, dropping point rising agent, rust-preventive agent, softening agent.A kind of enhancend friction type wire-rope hempwicking grease is disclosed as Chinese patent specification sheets CN1154402, it is to be base oil by viscosity greater than 42 petroleum residue, the polyisobutene of molecular weight 700 is the viscosity temperature characteristic improving agent, 210 rosin improve resol for increasing the agent that rubs, dibutyl phthalate is a softening agent, new LDPE (film grade) is the dropping point rising agent, and T708 is that rust-preventive agent is formed.Because it is too many to have or partly have the material of linear structure in the component, therefore increase the DeGrain that rubs, and the addition of additive is too big, thereby the cost height.

Summary of the invention

The technical problem to be solved in the present invention is, improves the performance of rubbing that increases of Friction-increasing grease, makes itself and various liner compatibility all can obtain higher coefficient of friction, and has lower cost simultaneously.

Friction-increasing grease provided by the invention, form by following component and weight percentage thereof:

The preferred 65-75% of base oil 40-90%

Increase the preferred 9-15% of agent 5-20% that rubs

The preferred 8-12% of viscosity-temperature improver 4-15%

The preferred 1-4% of rust-preventive agent 1-7%

The preferred 1-4% of softening agent 0-10%

The preferred 5-8% of dropping point rising agent 0-10%

Described:

Base oil is: aromaticity content 60-100 weight %, 100 ℃ of kinematic viscosity are: the hydrocarbon ils of 5-30cSt.

Increasing the agent that rubs is: structure contains the resin of aromatic ring, and its softening temperature is at 100-150 ℃, and dissolving is good in aromatic solvent.

Viscosity-temperature improver is: low molecular chain hydrocarbon polymer, its number-average molecular weight is 1000-40000.

Rust-preventive agent is: one or more in barium mahogany sulfonate, petroleum sodium sulfonate, zinc naphthenate, lanolin, the lanolin magnesium soap.

Softening agent is: C ₉-C ₁₄Aromatic hydrocarbons, wherein pure aromatics content is 80-100 weight %, boiling range is 150-330 ℃.

The dropping point rising agent is: number-average molecular weight is 1-10 ten thousand polystyrene, or fusing point is not less than 80 ℃ ceresine.

Base oil of the present invention can adopt by what extract out in the refinery by product and be rich in the aromatic hydrocarbons hydrocarbon ils, and as ethylene bottom oil, recycle stock, the aromatic hydrocarbons hydrocarbon ils etc. of being rich in of the extraction in the lubricating oil is base oil, be preferably extract out in the self-lubricating oil be rich in the aromatic hydrocarbons hydrocarbon ils.

The present invention increases the agent that rubs and can be selected from: 212 resol, tertiary butyl phenol urea formaldehyde, coumarone indene resin, 871 resins etc., preferred 212 resol.

Viscosity-temperature improver of the present invention, its polymerization methods can be homopolymerization, copolymerization, polymerization single polymerization monomer can be one or more in ethene, propylene, butylene, iso-butylene, the divinyl etc.As low molecule second third glue of number-average molecular weight 1-4 ten thousand, the low molecular polyisobutylene that number-average molecular weight is 1000-10000 etc., recommend to adopt low molecule second third glue of number-average molecular weight 1-4 ten thousand, most preferably low molecule second third glue of number-average molecular weight 10,000.

The preferred barium mahogany sulfonate of rust-preventive agent of the present invention.

Softening agent of the present invention.Can adopt pure component aromatic hydrocarbons, can also adopt BTX aromatics, for example the by product C of refinery, chemical fibre factory ₉Heavy aromatics or C ₁₀Heavy aromatics.Preferred C ₉Heavy aromatics.

The preferred polystyrene of dropping point rising agent of the present invention.

Production method of the present invention is: at first add base oil in reactor, heat to add to 115 ℃ of dehydrations and increase the agent that rubs, viscosity-temperature improver, dropping point rising agent, be warming up to 120-130 ℃ of insulated and stirred 4 hours, be cooled to 100 ℃, add rust-preventive agent and softening agent, stir, the after-filtration blowing is up to the standards.

Dropping point rising agent of the present invention and softening agent can add or not add according to raw material condition and product service requirements.

Friction-increasing grease of the present invention compared with prior art, has the following advantages:

1, has high friction coefficient.Because the frictional coefficient of aromatic hydrocarbons and naphthenic hydrocarbon is than the frictional coefficient height of chain hydrocarbon, mostly be ring texture greatly on each component structure that the present invention adopts, can not between wireline and liner, form fine and close lubricant film, the lubricant film carbon chain lengths of its formation falls short of (comparing with straight chain), and therefore Friction-increasing grease of the present invention has high friction coefficient.

2, has lower cost.Because the raw material that the present invention adopts: base oil, rust-preventive agent, softening agent, all can adopt the by product of refining of petroleum, and softening agent and viscosity temperature characteristic improving agent addition are less, and production temperature and production time all decrease than prior art and shorten, and therefore have lower raw materials cost and manufacturing cost.

3 and various gasket, good as couplings such as PVC liner, urethane liners.

Embodiment

The following examples and Comparative Examples will the invention will be further described, but do not limit the present invention.Following per-cent all is weight percentage.

Embodiment 1: add earlier second line of distillation lubricating oil and extract 68% (containing aromatic hydrocarbons 60 weight %) of aromatic hydrocarbons hydrocarbon ils out in reactor, heat and to 115 ℃ of dehydrations, add 212 resol 10%, polystyrene (number-average molecular weight 30,000) 6%, low molecule second third glue (number-average molecular weight 10,000) 9%, be warming up to 120-130 ℃ of insulated and stirred 4 hours, and be cooled to 100 ℃; Add C at last ₉Heavy aromatics 5%, barium mahogany sulfonate (barium content 8%) 2%.Stir, the after-filtration blowing is up to the standards.

Embodiment 2: aromatic hydrocarbon pumped from catalytic cracking cycle oil hydrocarbon ils 75% (containing aromatic hydrocarbons 90 weight %), coumarone indene resin (130 ℃ of softening temperatures) 10%, petroleum sodium sulfonate (petroleum sodium sulfonate molecular-weight average 450, mineral oil content 50%) 2%, low molecular polyisobutylene (number-average molecular weight 0.5 ten thousand) 10%, C ₁₀Heavy aromatics 3%.Production technique as previously mentioned.

Embodiment 3: subtract three-way lubricating oil and extract 79% (containing aromatic hydrocarbons 70 weight %) of aromatic hydrocarbons hydrocarbon ils, 871 resins (140 ℃ of softening temperatures) 10%, lanolin magnesium soap 1%, low molecular polyisobutylene (number-average molecular weight 0.8 ten thousand) 10% out.Production technique as previously mentioned.

Embodiment 4: ethylene bottom oil is extracted aromatic hydrocarbons hydrocarbon ils (containing aromatic hydrocarbons 80 weight %) 90% out, TDN-204 tertiary butyl phenol urea formaldehyde 4%, polystyrene (number-average molecular weight 30,000) 2%, zinc naphthenate (zinc content 9%) 1%, low molecular polyisobutylene (number-average molecular weight 0.3 ten thousand) 3%.Production technique as previously mentioned.

Comparative Examples: molecular weight is 700 polyisobutene 31%, catalytic cracking residual oil 45%, 210 rosin modified phenolic resin 12%, T ₇₀₈Rust-preventive agent 1%, new LDPE (film grade) 6%, dibutyl phthalate 5%.At first get molecular weight and be 700 polyisobutene 31%, catalytic cracking residual oil and extract oily 35-50% out, in water knockout, heat to 115 ℃ of deposition dehydratings, the dehydration back adds new LDPE (film grade) 3-15%, be heated to 130-150 ℃, after stirring 6-10 hour, be cooled to 130 ℃, add 210 rosin modified phenolic resin 6-20% and dibutyl phthalate 4-15%, insulation is stirred and circulating filtration at 130 ℃, adds T when cooling to 120 ℃ ₇₀₈Rust-preventive agent 0.1-3% stirs.

Following table 1 is that the performance of embodiment and Comparative Examples compares, and following table 2 is the matching effect of embodiment to domestic existing liner.

The high temperature performance of table 1 embodiment and Comparative Examples and frictional behaviour

Table 2 embodiment is to the average friction coefficient of various liners

Type of pad	K-25	PVC	Polyurethanes
Type of pad	K-25	PVC	Polyurethanes	Embodiment 1	0.35	0.30	0.33
Embodiment 2	0.30	0.29	0.27	Embodiment 1	0.35	0.30	0.33
Embodiment 2	0.30	0.29	0.27	Embodiment 3	0.33	0.31	0.30
Embodiment 4	0.28	0.27	0.31	Embodiment 3	0.33	0.31	0.30

Claims

1, a kind of Friction-increasing grease is characterized in that: be made up of following component and weight percentage thereof:

Base oil 40-90%

Increase the agent 5-20% that rubs

Viscosity-temperature improver 4-15%

Rust-preventive agent 1-7%

Softening agent 0-10%

Dropping point rising agent 0-10%

Described:

Base oil is: aromaticity content 60-100 weight %, and 100 ℃ of kinematic viscosity are: the hydrocarbon ils of 5-30 cSt;

Increasing the agent that rubs is: structure contains the resin of aromatic ring, and its softening temperature is at 100-150 ℃, and dissolving is good in aromatic solvent;

Viscosity-temperature improver is: low molecular chain hydrocarbon polymer, and its number-average molecular weight is 1000-40000;

Rust-preventive agent is: one or more in barium mahogany sulfonate, petroleum sodium sulfonate, zinc naphthenate, lanolin, the lanolin magnesium soap;

Softening agent is: C ₉-C ₁₄Aromatic hydrocarbons, wherein pure aromatics content is 80-100 weight %, boiling range is 150-330 ℃;

2, Friction-increasing grease according to claim 1, it is characterized in that: the weight percentage of each component is:

Base oil 65-75%

Increase the agent 9-15% that rubs

Viscosity-temperature improver 8-12%

Rust-preventive agent 1-4%

Softening agent 1-4%

Dropping point rising agent 5-8%

3, Friction-increasing grease according to claim 1 is characterized in that: base oil is for being rich in the aromatic hydrocarbons hydrocarbon ils by what extract out in refinery by product ethylene bottom oil, recycle stock or the lubricating oil.

4, as Friction-increasing grease as described in claim 1 or 2 or 3, it is characterized in that: increasing the agent that rubs is 212 resol, tertiary butyl phenol urea formaldehyde, coumarone indene resin or 871 resins.

5, as Friction-increasing grease as described in claim 1 or 2 or 3, it is characterized in that: viscosity-temperature improver is that low molecule second third glue, the number-average molecular weight of number-average molecular weight 1-4 ten thousand is the low molecular polyisobutylene of 1000-10000.

6, as Friction-increasing grease as described in claim 1 or 2 or 3, it is characterized in that: rust-preventive agent is barium mahogany sulfonate.

7, as Friction-increasing grease as described in claim 1 or 2 or 3, it is characterized in that: softening agent is C ₉Heavy aromatics.

8, as Friction-increasing grease as described in claim 1 or 2 or 3, it is characterized in that: the dropping point rising agent is that number-average molecular weight is 1-10 ten thousand polystyrene.