CN110029007B - Preparation method and application of environment-friendly shield tail grease - Google Patents
Preparation method and application of environment-friendly shield tail grease Download PDFInfo
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- CN110029007B CN110029007B CN201910404500.4A CN201910404500A CN110029007B CN 110029007 B CN110029007 B CN 110029007B CN 201910404500 A CN201910404500 A CN 201910404500A CN 110029007 B CN110029007 B CN 110029007B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/401—Fatty vegetable or animal oils used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/12—Polysaccharides, e.g. cellulose, biopolymers
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/34—Lubricating-sealants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a preparation method of environment-friendly shield tail grease, which comprises the following steps: 1) mixing base oil, tackifier and pumpability improver, heating to 50-100 deg.C, and stirring to mix well; 2) adding the reinforcing agent, and stirring for 40-60 min under heat preservation; 3) adding the filler and the lubricant, and stirring at 50-100 ℃ for 90-180 min.
Description
Technical Field
The invention relates to shield tail grease of a shield machine, in particular to a preparation method and application of environment-friendly shield tail grease.
Background
With the rapid development of the economy of China, the infrastructure of each city is actively developed, particularly the construction of urban rail transit, wherein 43 cities in continental areas of China are already constructing underground rail transit, the climax of the construction of the underground rail transit is raised, and unprecedented challenges and development opportunities are brought to rail transit careers and related industries. In addition, the small diameter shield method used in the construction of large diameter shield method highway tunnels, hydraulic tunnels, electric power tunnels and urban underground pipelines is also increasingly popular.
The shield tail is formed by extending a shield shell steel plate, plays a role in shielding tunnel lining assembly work, and is provided with a shield tail sealing device at the tail end of the shield tail. The shield tail sealing grease is a sealing material used for preventing underground water, soil and grouting materials from entering the shield from the gap between the shield tail and the lining. With the development of high and new technologies, the technological content of the control technology of the shield machine is higher and higher, and if the remote control technology and the like are generally applied to the shield machine, the operation of the shield machine and the control of the ground surface settlement are simpler and easier, and the construction quality of the tunnel is better and better.
The tail shield grease at present is generally composed of oil, lubricating grease, filler, fiber and other auxiliary agents, wherein the oil is mainly mineral base oil, chlorinated paraffin, engine oil, hydraulic oil and the like, and the materials are difficult to degrade and pollute soil and environment. The application of other auxiliary agents can also have a great influence on urban groundwater and soil.
In addition, the shield tail sealing device is very easy to damage due to the ever-changing position of the shield during propelling, so that the shield tail grease is required to have the following characteristics: the slurry injection material has the advantages of excellent working stability, better metal adhesion, water resistance, water pressure resistance, excellent pumping performance and corrosion resistance, thereby effectively preventing water, soil and the slurry injection material from permeating. The tail shield grease used in the prior art has poor pumping performance at low temperature, influences the use of the tail shield grease, and particularly influences the application of the tail shield grease in sealing the tail shield.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a preparation method and application of environment-friendly tail grease which has the advantages of strong water pressure resistance and sealing property, excellent lubricating property, good pumping property, suitability for low-temperature use and no pollution to the environment.
The invention provides a preparation method of environment-friendly shield tail grease, which comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 50-100 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40-60 min under heat preservation;
3) adding the filler and the lubricant, and stirring at 50-100 ℃ for 90-180 min.
In one embodiment, the environment-friendly peltate tail fat is prepared from the following raw materials in parts by weight: 10-30 parts of base oil, 1-20 parts of tackifier, 1-5 parts of pumpability improver, 1-15 parts of reinforcing agent, 10-45 parts of filler and 1-5 parts of lubricant.
In one embodiment, the environment-friendly peltate tail fat is prepared from the following raw materials in parts by weight: 10-25 parts of base oil, 2-12 parts of tackifier, 1-4 parts of pumpability improver, 5-10 parts of reinforcing agent, 20-40 parts of filler and 1-5 parts of lubricant;
preferably, the raw materials for preparing the environment-friendly peltate tail grease comprise the following components in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 7 parts of reinforcing agent, 30 parts of filler and 3 parts of lubricant.
In one embodiment, the base oil comprises one or more of a mechanical hydraulic oil, an antiwear hydraulic oil, a soybean oil, a castor oil, an epoxidized soybean oil; preferably, the base oil is antiwear hydraulic oil or soybean oil.
In one embodiment, the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: (0.1-2); preferably, the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7.
in one embodiment, the tackifier comprises one or more of natural rosin resin, C5 resin, acrylic resin, epoxy resin, vinyl chloride resin, styrene acrylate copolymer resin, terpolymer high elasticity resin, polybutylene, polyester resin, silicone resin, urea resin, melamine resin, furfural resin;
useful acrylic resins include, but are not limited to, methyl methacrylate, ethyl methacrylate, polybutyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, octyl methacrylate, hexyl methacrylate, benzyl methacrylate.
Useful epoxy resins include, but are not limited to, bisphenol a type epoxy resins, bisphenol F type epoxy resins, novolac epoxy resins, acrylic epoxy resins, polybutadiene epoxy resins.
Useful terpolymerization elastomeric resins include, but are not limited to, SBS resin, ABS resin.
Useful unsaturated polyester resins include, but are not limited to, xylene type unsaturated polyester resins, isophthalic acid type unsaturated polyester resins, bisphenol a type unsaturated polyester resins, vinyl ester type unsaturated polyester resins, terephthalic acid type unsaturated polyester resins.
Useful silicones include, but are not limited to, those designated W30-11(1053), W30-12(1152), W30-14(955), W31-11(948), W33-11(940), W33-12(941), W33-15(1153), W35-11(947S), 1151, 956, 1054.
Preferably, the tackifier is a terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is an ABS resin.
In one embodiment, the pumpability improver comprises one or more of T612, C9 petroleum resins; preferably, the pumpability improver is C9 petroleum resin.
In one embodiment, the reinforcing agent comprises one or more of cotton, asbestos, bamboo fiber, PA6, PP, PE; preferably, the reinforcing agent is asbestos or bamboo fiber.
In one embodiment, the weight ratio of the asbestos to the bamboo fibers in the reinforcing agent is 1: (0.5-2); preferably, the weight ratio of the asbestos to the bamboo fibers in the reinforcing agent is 1: 1.2.
the bamboo fiber is stearic acid modified bamboo fiber.
The preparation method of the stearic acid modified bamboo fiber comprises the following steps:
adding the bamboo fiber into a high-speed mixer with a charging basket at the temperature of 60 ℃, adding stearic acid and BPO, stirring for 1h, discharging, raising the charging basket temperature of the high-speed mixer to 120 ℃, pouring the materials into the high-speed mixer, stirring at a high speed for 1h, and discharging to obtain stearic acid modified bamboo fiber; the weight ratio of the bamboo fibers to the stearic acid and the BPO is 100: 0.2: 0.05.
in one embodiment, the filler comprises one or more of zinc oxide, titanium oxide, magnesium oxide, barium carbonate, barium sulfate, zinc carbonate, ground calcium carbonate, zinc sulfate, wood flour, peanut shell flour; the particle size of the filler is 30-300 microns; the particle size of the filler is 50-200 microns.
Preferably, the filler is ground calcium carbonate, wood flour and peanut shell powder;
in one embodiment, the weight ratio of the ground calcium carbonate to the wood flour and the peanut shell flour is 1: (0.01-0.2): (0.01-0.1); preferably, the weight ratio of the ground calcium carbonate to the wood flour to the peanut shell flour is 1: 0.1: 0.06.
in addition, hydrogen bonds are formed between partial hydroxyl groups and hydroxyl groups on the surfaces of the wood powder and the peanut shell powder to stabilize the skeleton, and the sealing performance under high water pressure in use is ensured.
In one embodiment, the lubricant comprises one or more of a calcium-based grease, a sodium-based grease, an aluminum-based grease, a lead-based grease, a barium-based grease, a lithium-based grease; preferably, the lubricant is a calcium-based grease.
In one embodiment, the environment-friendly tail grease is applied to a tail of a seal shield.
According to the invention, stearic acid has high reaction activity, one end of stearic acid is a strongly acidic carboxyl group, the stearic acid can be chemically bonded with the surface of the bamboo fiber, and under the reaction condition of solid-phase grafting, the product is combined with the surface of the bamboo fiber, so that the surface of the modified bamboo fiber contains carboxyl and hydroxyl, the effect of stabilizing the skeleton in the tail grease is promoted, the sealing performance of the tail grease under high water pressure in use is ensured, and the components and the synergistic effect are combined, so that the environment-friendly tail grease which has strong water pressure resistance and sealing performance, excellent lubricating performance, good pumping performance and suitability for low-temperature use is provided.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
Example 1
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 7 parts of reinforcing agent, 30 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is asbestos and bamboo fiber, and the weight ratio of the asbestos to the bamboo fiber in the reinforcing agent is 1: 1.2, the bamboo fiber is stearic acid modified bamboo fiber; the filler is heavy calcium carbonate, wood flour and peanut shell powder, and the weight ratio of the heavy calcium carbonate to the wood flour to the peanut shell powder is 1: 0.1: 0.06, the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
Example 2
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 17 parts of reinforcing agent, 20 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is asbestos and bamboo fiber, and the weight ratio of the asbestos to the bamboo fiber in the reinforcing agent is 1: 1.2, the bamboo fiber is stearic acid modified bamboo fiber; the filler is heavy calcium carbonate, wood flour and peanut shell powder, and the weight ratio of the heavy calcium carbonate to the wood flour to the peanut shell powder is 1: 0.1: 0.06, the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
Example 3
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 2 parts of reinforcing agent, 40 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is asbestos and bamboo fiber, and the weight ratio of the asbestos to the bamboo fiber in the reinforcing agent is 1: 1.2, the bamboo fiber is stearic acid modified bamboo fiber; the filler is heavy calcium carbonate, wood flour and peanut shell powder, and the weight ratio of the heavy calcium carbonate to the wood flour to the peanut shell powder is 1: 0.1: 0.06, the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
Example 4
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 7 parts of reinforcing agent, 30 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is asbestos and bamboo fiber, and the weight ratio of the asbestos to the bamboo fiber in the reinforcing agent is 1: 0.5, the bamboo fiber is stearic acid modified bamboo fiber; the filler is heavy calcium carbonate, wood flour and peanut shell powder, and the weight ratio of the heavy calcium carbonate to the wood flour to the peanut shell powder is 1: 0.1: 0.06, the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
Example 5
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 7 parts of reinforcing agent, 30 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is asbestos and bamboo fiber, and the weight ratio of the asbestos to the bamboo fiber in the reinforcing agent is 1: 2, the bamboo fiber is stearic acid modified bamboo fiber; the filler is heavy calcium carbonate, wood flour and peanut shell powder, and the weight ratio of the heavy calcium carbonate to the wood flour to the peanut shell powder is 1: 0.1: 0.06, the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
Example 6
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 7 parts of reinforcing agent, 30 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is asbestos and bamboo fiber, and the weight ratio of the asbestos to the bamboo fiber in the reinforcing agent is 1: 1.2, the bamboo fiber is stearic acid modified bamboo fiber; the filler is heavy calcium carbonate, wood flour and peanut shell powder, and the weight ratio of the heavy calcium carbonate to the wood flour to the peanut shell powder is 1: 0.01: 0.01, the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
Example 7
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 7 parts of reinforcing agent, 30 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is asbestos and bamboo fiber, and the weight ratio of the asbestos to the bamboo fiber in the reinforcing agent is 1: 1.2, the bamboo fiber is stearic acid modified bamboo fiber; the filler is heavy calcium carbonate, wood flour and peanut shell powder, and the weight ratio of the heavy calcium carbonate to the wood flour to the peanut shell powder is 1: 0.2: 0.1, the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
Comparative example 1
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 7 parts of reinforcing agent, 30 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is asbestos and bamboo fiber, and the weight ratio of the asbestos to the bamboo fiber in the reinforcing agent is 1: 1.2; the filler is heavy calcium carbonate, wood flour and peanut shell powder, and the weight ratio of the heavy calcium carbonate to the wood flour to the peanut shell powder is 1: 0.1: 0.06, the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
Comparative example 2
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 7 parts of reinforcing agent, 30 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is bamboo fiber, and the bamboo fiber is stearic acid modified bamboo fiber; the filler is heavy calcium carbonate, wood flour and peanut shell powder, and the weight ratio of the heavy calcium carbonate to the wood flour to the peanut shell powder is 1: 0.1: 0.06, the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
Comparative example 3
A preparation method of environment-friendly shield tail grease comprises the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 80 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40min under heat preservation;
3) adding filler and lubricant, and stirring at 70 deg.C for 120 min.
The environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 22 parts of base oil, 8 parts of tackifier, 3 parts of pumpability improver, 7 parts of reinforcing agent, 30 parts of filler and 3 parts of lubricant;
the base oil is antiwear hydraulic oil and soybean oil, and the weight ratio of the antiwear hydraulic oil to the soybean oil in the base oil is 1: 0.7; the tackifier is terpolymer high-elasticity resin, and the terpolymer high-elasticity resin is ABS resin; the pumpability improver is C9 petroleum resin; the reinforcing agent is asbestos and bamboo fiber, and the weight ratio of the asbestos to the bamboo fiber in the reinforcing agent is 1: 1.2, the bamboo fiber is stearic acid modified bamboo fiber; the filler is heavy calcium carbonate, and the particle size of the filler is 50-200 microns; the lubricant is calcium-based grease.
The results of the tests performed on examples 1 to 7 and comparative examples 1 to 3 according to the product quality were as follows:
table 1 results of performance testing
| Sealing (0.8 MPa) | Etching of | Pumpability (MPa, -10 ℃ C.) | |
| Example 1 | Grease and water leakage preventing device | Not blackened or greenened | 30 |
| Example 2 | Grease and water leakage preventing device | Not blackened or greenened | 23 |
| Example 3 | Grease and water leakage preventing device | Not blackened or greenened | 27 |
| Example 4 | Grease and water leakage preventing device | Not blackened or greenened | 24 |
| Example 5 | Grease and water leakage preventing device | Not blackened or greenened | 25 |
| Example 6 | Grease and water leakage preventing device | Not blackened or greenened | 26 |
| Example 7 | Grease and water leakage preventing device | Not blackened or greenened | 24 |
| Comparative example 1 | Grease and water leakage preventing device | Not blackened or greenened | 17 |
| Comparative example 2 | Grease and water leakage preventing device | Not blackened or greenened | 20 |
| Comparative example 3 | Grease and water leakage preventing device | Not blackened or greenened | 21 |
From the data, the environment-friendly type shield tail grease prepared by the preparation method provided by the invention has the advantages of strong water pressure resistance and sealing property, excellent lubricating property, good pumping performance and suitability for low-temperature use.
Claims (6)
1. The preparation method of the environment-friendly shield tail grease is characterized by comprising the following steps:
1) mixing base oil, tackifier and pumpability improver, heating to 50-100 deg.C, and stirring to mix well;
2) adding the reinforcing agent, and stirring for 40-60 min under heat preservation;
3) adding the filler and the lubricant, and stirring at 50-100 ℃ for 90-180 min;
the environment-friendly type shield tail grease comprises the following raw materials in parts by weight: 10-30 parts of base oil, 1-20 parts of tackifier, 1-5 parts of pumpability improver, 1-15 parts of reinforcing agent, 10-45 parts of filler and 1-5 parts of lubricant; the reinforcing agent is asbestos and bamboo fiber; the weight ratio of the asbestos to the bamboo fibers in the reinforcing agent is 1: (0.5-2); the bamboo fiber is stearic acid modified bamboo fiber; the preparation method of the stearic acid modified bamboo fiber comprises the following steps:
adding the bamboo fiber into a high-speed mixer with a charging basket at the temperature of 60 ℃, adding stearic acid and BPO, stirring for 1h, discharging, raising the charging basket temperature of the high-speed mixer to 120 ℃, pouring the materials into the high-speed mixer, stirring at a high speed for 1h, and discharging to obtain stearic acid modified bamboo fiber; the weight ratio of the bamboo fibers to the stearic acid and the BPO is 100: 0.2: 0.05; the pumpability improver comprises one or more of T612 and C9 petroleum resin; the lubricant comprises one or more of calcium-based grease, sodium-based grease, aluminum-based grease, lead-based grease, barium-based grease and lithium-based grease.
2. The method for preparing environment-friendly peltate tail fat according to claim 1, wherein the raw materials for preparing the environment-friendly peltate tail fat comprise, by weight: 10-25 parts of base oil, 2-12 parts of tackifier, 1-4 parts of pumpability improver, 5-10 parts of reinforcing agent, 20-40 parts of filler and 1-5 parts of lubricant.
3. The method for preparing the environment-friendly peltate tail grease as claimed in claim 1, wherein the base oil comprises one or more of mechanical hydraulic oil, antiwear hydraulic oil, soybean oil, castor oil and epoxidized soybean oil.
4. The method for preparing the environment-friendly shield tail grease as claimed in claim 1, wherein the tackifier comprises one or more of natural rosin resin, C5 resin, acrylic resin, epoxy resin, vinyl chloride resin, styrene acrylate copolymer resin, terpolymer high-elasticity resin, polybutylene, polyester resin, silicon resin, urea resin, melamine resin and furfural resin.
5. The method for preparing the environment-friendly shield tail grease as claimed in claim 1, wherein the filler comprises one or more of zinc oxide, titanium oxide, magnesium oxide, barium carbonate, barium sulfate, zinc carbonate, ground calcium carbonate, zinc sulfate, wood flour and peanut shell flour; the particle size of the filler is 30-300 microns.
6. The method for preparing the environment-friendly tail grease as claimed in claim 1, wherein the environment-friendly tail grease is applied to a tail of a sealing shield.
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| CN112592753A (en) * | 2020-10-21 | 2021-04-02 | 南通盘天新材料有限公司 | Double-component shield tail sealing grease |
| CN115466597B (en) * | 2021-11-12 | 2023-11-14 | 虎牌石油（中国）有限公司 | Environment-friendly shield tail sealant and preparation method thereof |
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| JP2571446B2 (en) * | 1989-12-26 | 1997-01-16 | 日本石油株式会社 | Tail seal composition for shield machine |
| CN101735581A (en) * | 2008-11-12 | 2010-06-16 | 王世和 | Full biomass-based composite material, preparation method and application thereof |
| CN101831345B (en) * | 2010-05-18 | 2013-03-27 | 上海纳克润滑技术有限公司 | Sealing grease and preparation method and application thereof |
| WO2016021690A1 (en) * | 2014-08-07 | 2016-02-11 | Ｊｘ日鉱日石エネルギー株式会社 | Tail seal composition for use in shield machine |
| CN106244299A (en) * | 2016-08-03 | 2016-12-21 | 厦门诺恩斯科技有限公司 | A kind of tail seal grease of shield and preparation method thereof |
| CN106433858A (en) * | 2016-09-19 | 2017-02-22 | 北京合东双科技有限公司 | Shield tail sealing grease with high sealing performance and application of shield tail sealing grease |
| CN109207233A (en) * | 2017-06-30 | 2019-01-15 | 江苏惠丰润滑材料股份有限公司 | A kind of environmentally friendly tail seal grease of shield and preparation method thereof |
| CN109207234A (en) * | 2017-06-30 | 2019-01-15 | 江苏惠丰润滑材料股份有限公司 | A kind of environment-friendly type shield machine shield tail seal grease and preparation method thereof |
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