CN108178952B - Low-friction-coefficient coating and application method thereof on friction pendulum seismic isolation support - Google Patents
Low-friction-coefficient coating and application method thereof on friction pendulum seismic isolation support Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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Abstract
A low-friction coefficient coating and an application method thereof on a friction pendulum seismic isolation support are provided, wherein the low-friction coefficient coating is composed of the following components in parts by weight: 100 parts of water-based resin emulsion, 1-20 parts of low-molecular lubricant with the molecular weight of less than 50000, 1-20 parts of wear-resistant filler with the particle size of less than 10 mu m, 0.1-4 parts of silane coupling agent and 1.55-4.15 parts of auxiliary agent, wherein the auxiliary agent is formed by mixing 0.05-0.15 part of defoaming agent, 0.5-2 parts of dispersing agent and 1-2 parts of film-forming auxiliary agent in parts by weight. This application reduces the coefficient of friction pendulum isolation bearing at the surface coating low coefficient of friction coating of bedplate from top to bottom, and this coating has the characteristics that coefficient of friction is low, the durability is good, and friction pendulum isolation bearing adopts low coefficient of friction coating, and the sprayed coating durability of formation is good, and low coefficient of friction coating adopts the preparation of aqueous emulsion resin to form, and is safe environmental protection.
Description
Technical Field
The invention belongs to the field of coating manufacturing, and particularly relates to a low-friction-coefficient coating and an application method thereof on a friction pendulum seismic isolation support.
Background
A friction pendulum seismic isolation support (called FPS for short) is a support which utilizes the pendulum principle to realize the seismic isolation and reduction functions and has the capability of bearing vertical load and horizontal displacement. The support consumes seismic energy through friction of the sliding interface to achieve a shock absorption function, and the structure motion period is prolonged through spherical surface swing to achieve a shock insulation function. The general structure of the friction pendulum seismic isolation support is that the stainless steel surfaces of the upper and lower seat plates and a sliding block material (generally polytetrafluoroethylene, namely PTFE, modified PTFE or modified ultra-high molecular weight polyethylene) are oppositely ground, and the structure has a large friction coefficient (the surface pressure is 24MPa, and the dynamic friction coefficient is more than 0.07 at the speed of 150 mm/s) and is not suitable for high-rise building seismic isolation.
Disclosure of Invention
The invention aims to provide a low-friction-coefficient coating and an application method thereof on a friction pendulum seismic isolation support, and aims to solve the technical problem that the prior art is not suitable for high-rise building seismic isolation; and solves the technical problem of low tolerance in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the low-friction-coefficient coating is characterized by comprising the following components in parts by weight: 100 parts of water-based resin emulsion, 1-20 parts of low molecular lubricant with the molecular weight of less than 50000, 1-20 parts of wear-resistant filler with the particle size of less than 10 mu m, 0.1-4 parts of silane coupling agent and 1.55-4.15 parts of assistant.
Further preferably, the auxiliary agent is one or a combination of several of a defoaming agent, a dispersing agent and a film-forming auxiliary agent.
Furthermore, the auxiliary agent is formed by mixing 0.05-0.15 part by weight of defoaming agent, 0.5-2 parts by weight of dispersing agent and 1-2 parts by weight of film-forming auxiliary agent.
Further, the aqueous resin emulsion is an aqueous fluororesin emulsion, and the aqueous resin emulsion is a thermoplastic or thermosetting aqueous resin emulsion.
Further, the low molecular lubricant is one or a combination of several of perfluoropolyether, polydimethylsiloxane and a polydimethylsiloxane modifier, and the polydimethylsiloxane modifier is polymethylphenylsiloxane.
Further, the low molecular lubricant has a molecular weight of less than 20000.
In addition, the wear-resistant filler is carbon black or white carbon black material, and the particle size of the wear-resistant filler is less than 10 um.
More preferably, the silane coupling agent is one or more of tetraethoxysilane, methyltriethoxysilane, phenyltrimethoxysilane, propyltrimethoxysilane, vinyltriethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane and aminopropyltriethoxysilane.
An application method of a low-friction-coefficient coating in a friction pendulum seismic isolation support is characterized by comprising the following steps:
step one, substrate treatment: carrying out sand blasting degreasing treatment on a steel plate to be sprayed, wherein the surface roughness of the steel plate is 0.5-2.5 um;
step two, manufacturing a spray coating: after the raw materials required by the low-friction-coefficient coating are weighed, stirring for half an hour at the rotating speed of 2000 rpm;
step three, spraying the low-friction-coefficient coating: after the low friction coefficient coating is sprayed on a steel plate, the steel plate is sintered in an oven at 200 ℃ for half an hour.
More preferably, friction pendulum isolation bearing includes bedplate, bedplate and spherical crown board down, the spherical crown integrated circuit board is fixed between bedplate and bedplate down, the relative face of bedplate and bedplate down is inside sunken arcwall face, the spherical crown integrated circuit board is fixed in the space that the arcwall face of bedplate and bedplate down encloses, the friction material layer has been laid between spherical crown board and bedplate and the bedplate down, the low friction coefficient coating spraying is in form the spray coating layer on the arcwall face of bedplate and bedplate down, the spray coating layer is thick 5um ~ 30 um.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
this application reduces the coefficient of friction pendulum isolation bearing at the surface coating low coefficient of friction coating of bedplate from top to bottom, and this coating has the characteristics that coefficient of friction is low, the durability is good, and friction pendulum isolation bearing adopts low coefficient of friction coating, and the sprayed coating durability of formation is good, and low coefficient of friction coating adopts the preparation of aqueous emulsion resin to form, and is safe environmental protection.
The low surface energy water-based emulsion resin is a main film forming substance, a film is formed by heating, a low molecular lubricant with better affinity with the resin is selected to further reduce the surface energy of a coating to reduce the shearing acting force between the coating and a sliding block material, the wear resistance of the coating is improved by adding the wear-resistant filler, the dispersibility of the filler in the coating and the acting force between the filler and the coating are improved by adding the silane coupling agent modified filler, and the extremely low shearing acting force between the coating and the sliding block material endows the coating with a low friction coefficient.
The coating sprayed by the low-friction-coefficient coating disclosed by the invention is smooth in surface, good in dispersibility, good in water resistance, impact resistance, corrosion resistance, aging resistance, small in friction coefficient, wear resistance, low in noise and other excellent performances, can improve the service life and the operation stability of a building friction pendulum, is strong in corrosion resistance and wear resistance, and is widely applied.
The invention has the characteristics of safety, applicability and the like, has good popularization and practical values, and can generate good economic benefits after wide popularization and application.
Drawings
FIG. 1 is a schematic structural diagram of a friction pendulum seismic isolation bearing according to the present invention.
Reference numerals: 1-an upper seat board; 2-a lower seat plate; 3-spherical crown plate; 4-a friction material layer; 5-spraying coating.
Detailed Description
In order to make the technical means, innovative features, objectives and functions realized by the present invention easy to understand, the present invention is further described below.
The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
The low-friction coefficient coating has the viscosity of less than 10000cP, preferably less than 5000cP and comprises the following components in parts by weight: 100 parts of water-based resin emulsion, 1-20 parts of low molecular lubricant with the molecular weight of less than 50000, 1-20 parts of wear-resistant filler with the particle size of less than 10 mu m, 0.1-4 parts of silane coupling agent and 1.55-4.15 parts of assistant. The auxiliary agent is one or a combination of more of an antifoaming agent, a dispersing agent and a film-forming auxiliary agent, specifically, the auxiliary agent is formed by mixing 0.05-0.15 part by weight of an antifoaming agent, 0.5-2 parts by weight of a dispersing agent and 1-2 parts by weight of a film-forming auxiliary agent, the aqueous resin emulsion is an aqueous fluororesin emulsion, the aqueous resin emulsion is a thermoplastic or thermosetting aqueous resin emulsion, the low-molecular lubricant is one or a combination of more of perfluoropolyether, polydimethylsiloxane and polydimethylsiloxane modifier, the polydimethylsiloxane modifier is polymethylphenylsiloxane, preferably, the molecular weight of the low-molecular lubricant is less than 20000, the wear-resistant filler is carbon black or white carbon black material, preferably, the particle size of the wear-resistant filler is less than 10 microns, and the silane coupling agent is tetraethoxysilane, methyltriethoxysilane, phenyltrimethoxysilane, propyltrimethoxysilane, trimethoxysilane, One or more of vinyl triethoxysilane, 3-glycidyl ether oxypropyl triethoxysilane, 3-mercaptopropyl trimethoxysilane and aminopropyl triethoxysilane.
An application method of a low-friction-coefficient coating in a friction pendulum seismic isolation support is characterized by comprising the following steps:
step one, substrate treatment: carrying out sand blasting degreasing treatment on a steel plate to be sprayed, wherein the surface roughness of the steel plate is 0.5-2.5 um;
step two, manufacturing a spray coating: after the raw materials required by the low-friction-coefficient coating are weighed, stirring for half an hour at the rotating speed of 2000 rpm;
step three, spraying the low-friction-coefficient coating: after the low friction coefficient coating is sprayed on a steel plate, the steel plate is sintered in an oven at 200 ℃ for half an hour.
As shown in fig. 1, friction pendulum isolation bearing includes bedplate 1, bedplate 2 and spherical crown plate 3 down, 3 blocks of spherical crown plate are fixed between bedplate 1 and bedplate 2 down, the face that bedplate 1 and bedplate 2 are relative down is the inside sunken arcwall face, 3 blocks of spherical crown plate are fixed in the space that bedplate 1 and bedplate 2 down's arcwall face enclosed, spherical crown plate 3 and last bedplate 1 and have laid friction material layer 4 down between bedplate 2, the low friction coefficient coating spraying forms spray coating 5 on the arcwall face of bedplate 1 and bedplate 2 down, 5um ~ 30um thick on spray coating 5um, coating durability is relatively poor when thickness is less than 5um, coating processing difficulty when being higher than 30 um. The friction pendulum vibration isolation support sprayed by the low-friction-coefficient coating has a low friction coefficient, and is specifically represented by that the dynamic friction coefficient is less than 0.03 at a speed of 150mm/s under the condition of 24MPa surface pressure.
The present invention will be described in detail by providing five specific examples, wherein the specific types and weight parts of the materials selected in the five examples are shown in tables 1 and 2:
table 1, table of specific sizes of materials selected in the five examples.
| Composition (I) | Model number |
| Aqueous fluororesin emulsion | FE4300 |
| Perfluoropolyethers | Z03 |
| Polydimethylsiloxane | KF-96, number average molecular weight 5000 |
| Silane coupling agent | A-137 |
| Wear-resistant filler | N330 |
| Defoaming agent | BYK019 |
| Dispersing agent | DISPERBYK190 |
| Film forming aid | DPNP |
Table 2, table of weight components of each material of the five specific examples.
The preparation method of the coating comprises the following steps: the five raw materials are weighed and stirred at the rotating speed of 2000rpm for half an hour. The coating is sprayed on a 304 stainless steel plate which is subjected to sand blasting degreasing treatment, the size of the 304 stainless steel plate is 350 x 240mm, and then the 304 stainless steel plate is placed in a 200 ℃ oven for sintering for half an hour, and the coating thickness is 20 mu m.
Testing the friction coefficient of the sprayed steel plate, wherein the friction coefficient testing method comprises the following steps: the surface pressure is 24MPa, the speed is 150mm/s, a grinding part PTFE (polytetrafluoroethylene) sliding block is used in a comparative example, a mirror 304 stainless steel plate is selected in the comparative example, and the dynamic friction coefficient is the smallest in the example 1 through comparison, so that the weight parts of the materials in the example 1 can be preferably matched in practical application, and as can be seen from the table 3, the dynamic friction coefficient of the example 4 finished by the matching method is larger, but is far smaller than that of the comparative example.
Table 3, table of data of dynamic friction coefficient of each example and comparative example.
| Numbering | Coefficient of dynamic friction |
| Example 1 | 0.015 |
| Example 2 | 0.03 |
| Example 3 | 0.019 |
| Example 4 | 0.04 |
| Example 5 | 0.025 |
| Comparative example | 0.07 |
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. An application method of a low-friction-coefficient coating in a friction pendulum seismic isolation support is characterized in that:
the method comprises the following steps:
step one, substrate treatment: carrying out sand blasting degreasing treatment on a steel plate to be sprayed, wherein the surface roughness of the steel plate is 0.5-2.5 microns;
step two, manufacturing a spray coating: after the raw materials required by the low-friction-coefficient coating are weighed, stirring for half an hour at the rotating speed of 2000 rpm;
step three, spraying the low-friction-coefficient coating: after the low-friction coefficient coating is sprayed on a steel plate, the steel plate is sintered in an oven at 200 ℃ for half an hour;
the friction pendulum seismic isolation support comprises an upper seat plate (1), a lower seat plate (2) and a spherical crown plate (3), wherein the spherical crown plate (3) is clamped between the upper seat plate (1) and the lower seat plate (2), the opposite surfaces of the upper seat plate (1) and the lower seat plate (2) are inwards sunken arc-shaped surfaces, the spherical crown plate (3) is clamped in a space formed by the arc-shaped surfaces of the upper seat plate (1) and the lower seat plate (2), a friction material layer (4) is laid between the spherical crown plate (3) and the upper seat plate (1) and the lower seat plate (2), a low-friction-coefficient coating is sprayed on the arc-shaped surfaces of the upper seat plate (1) and the lower seat plate (2) to form a spraying layer (5), and the spraying layer (5) is 5 mu m-30 mu m thick.
2. The method for applying the low-friction-coefficient coating to the friction pendulum seismic isolation support as claimed in claim 1, wherein the method comprises the following steps: the low-friction-coefficient coating comprises the following components in parts by weight: 100 parts of water-based resin emulsion, 1-20 parts of low-molecular lubricant with the molecular weight of less than 50000, 1-20 parts of wear-resistant filler with the particle size of less than 10 mu m, 0.1-4 parts of silane coupling agent and 1.55-4.15 parts of auxiliary agent; the auxiliary agent is one or a combination of a plurality of defoaming agents, dispersing agents and film-forming auxiliary agents.
3. The method for applying the low-friction-coefficient coating to the friction pendulum seismic isolation support as claimed in claim 2, wherein the method comprises the following steps: the auxiliary agent is formed by mixing 0.05-0.15 part by weight of defoaming agent, 0.5-2 parts by weight of dispersing agent and 1-2 parts by weight of film-forming auxiliary agent.
4. The method for applying the low-friction-coefficient coating to the friction pendulum seismic isolation support as claimed in claim 2, wherein the method comprises the following steps: the low-molecular lubricant is one or a combination of more of perfluoropolyether, polydimethylsiloxane and a polydimethylsiloxane modifier, and the polydimethylsiloxane modifier is polymethylphenylsiloxane.
5. The method for applying the low-friction-coefficient coating to the friction pendulum seismic isolation support as claimed in claim 2, wherein the method comprises the following steps: the molecular weight of the low molecular lubricant is less than 20000.
6. The method for applying the low-friction-coefficient coating to the friction pendulum seismic isolation support as claimed in claim 2, wherein the method comprises the following steps: the wear-resistant filler is carbon black or white carbon black, and the particle size of the wear-resistant filler is less than 10 mu m.
7. The method for applying the low-friction-coefficient coating to the friction pendulum seismic isolation support as claimed in claim 2, wherein the method comprises the following steps: the silane coupling agent is one or a combination of more of tetraethoxysilane, methyltriethoxysilane, phenyltrimethoxysilane, propyltrimethoxysilane, vinyltriethoxysilane, 3-glycidyl ether oxypropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane and aminopropyltriethoxysilane.
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| CN110423528B (en) * | 2019-09-12 | 2021-01-08 | 中国电建集团铁路建设有限公司 | Anti-sticking fluorocarbon coating for slag hopper car |
| CN114656807B (en) * | 2022-04-22 | 2023-05-05 | 青岛黑猫新材料研究院有限公司 | Technological method for improving wear resistance of carbon black |
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| JPS58198573A (en) * | 1982-05-13 | 1983-11-18 | Otsuka Chem Co Ltd | Wear resistant coating material |
| JP3150838B2 (en) * | 1994-02-07 | 2001-03-26 | 大日精化工業株式会社 | One-part curable fluorine-containing resin compound, production method thereof, coating agent and coating method |
| CN100595244C (en) * | 2008-03-26 | 2010-03-24 | 天津科瑞达涂料化工有限公司 | Watersoluble fluor resin non-stick paint and manufacture method thereof |
| CN102618362A (en) * | 2012-02-27 | 2012-08-01 | 深圳市优宝惠新材料科技有限公司 | Friction-reducing lubricating coating composition |
| CN103911031B (en) * | 2014-04-10 | 2016-04-06 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of pot galvanize self-lubrication treatment agent composition and self-lubricating galvanized sheet and preparation method thereof |
| CN105755953B (en) * | 2016-04-22 | 2018-11-23 | 中铁二院工程集团有限责任公司 | Triple friction pendulum supports |
| CN106320555A (en) * | 2016-10-14 | 2017-01-11 | 智性科技南通有限公司 | Friction pendulum isolation bearing with variable curvature |
| CN106759929A (en) * | 2017-03-10 | 2017-05-31 | 清华大学 | Friction slipper |
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Effective date of registration: 20230208 Address after: 0701, 7th Floor, 5th Floor, No.9, Shouti South Road, Haidian District, Beijing 100044 Patentee after: Beijing Guobiao Jian'an New Material Co.,Ltd. Address before: 100048 Beijing city Haidian District Road No. 9 Building No. 2 international subject Patentee before: CHINA INSTITUTE OF BUILDING STANDARD DESIGN & RESEARCH |