CN101333316A - Material special for bridge bearing slipping wear plate and method for preparing same - Google Patents
Material special for bridge bearing slipping wear plate and method for preparing same Download PDFInfo
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- CN101333316A CN101333316A CNA200810031849XA CN200810031849A CN101333316A CN 101333316 A CN101333316 A CN 101333316A CN A200810031849X A CNA200810031849X A CN A200810031849XA CN 200810031849 A CN200810031849 A CN 200810031849A CN 101333316 A CN101333316 A CN 101333316A
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- wear plate
- bridge bearing
- material special
- compression molding
- bearing slipping
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Abstract
Special material for a bridge support wear resistance plate and a preparation method thereof are disclosed. The invention takes ultrahigh molecular polyethylene as parent metal, the composite system of organic macromolecule, wear resistance material and inorganic solid lubricant as lubricating and wear resisting component, and inorganic filler as strengthening component, and additionally takes ultraviolet absorbent as age inhibitor and absorbent, and prepares special material for a bridge support wear resistance plate through mixing and hot fusing. The special material for a bridge support wear resistance plate has the following constituents and mixture ratio(based in weight portions): 100 portions of ultrahigh molecular polyethylene, 1-20 portions of solid composite lubricant, 1-15 portions of filler, and 0.1-1.0 portions of ultraviolet absorbent. The molecular weight of the ultrahigh molecular polyethylene is 300-900. The preparation technique of the special material for the bridge support wear resistance plate includes compression molding and blending extrusion-compression molding.
Description
Technical field
The present invention relates to a kind of macromolecular material and preparation method thereof, refer in particular to a kind of bridge bearing slipping wear plate material based on the superelevation polyethylene and preparation method thereof.Mainly be exclusively used in as bridge structure bearing high-abrasive material.
Background technology
In recent years, China railways track traffic motorway speed is advanced by leaps and bounds, and different types of rridges continue to bring out, and promote the bridge industrial expansion effectively.The bridge pad of widespread usage is divided into two classes in bridge industry: a class is a pot rubber bearing; Another kind of is spherical bearing.In the rubber support structure design, utilize the steel loading plate to solve the transmission of bridge, utilize the lubricant of high abrasion resistance to do the damping moving parts.
As wear-resistant vibration-damping moving parts material, domestic most of bridge pad manufacturing enterprise adopts pure polytetrafluoroethylene (PTFE) plate.Because PTFE is under the long-term load effect, its creep properties is bigger, and produces significantly distortion.Also useful PTFE adds graphite or curing copper solid lubricant, glass fiber compound material, does the damping moving parts.This matrix material is having certain improvement aspect the anti-creep, but its wear resistance is effectively improved.
It is the bridge pad of base material that the ultra high molecular polyethylene of employing is recently also arranged, but its effect is not very desirable, mainly at self-lubricity, wear resistance, anti-creep, aspect such as ageing-resistant is not enough to some extent, therefore need further be studied to this.
Summary of the invention
The present invention is primarily aimed at the deficiency of existing benzvalene form rubber bridge pad, proposes a kind of self-lubricity, wear resistance, anti-creep, ageing-resistant more excellent material special for bridge bearing slipping wear plate and preparation method thereof.
The present invention is base material with the ultra high molecular polyethylene, adopts organic polymer, and high-abrasive material and inorganic solid lubricant compound system are as the lubricating and wear-resisting component; The employing inorganic fillings is an enhancement component, and is aided with ultraviolet light and makes antiaging agent, absorption agent.Make material special for bridge bearing slipping wear plate by mixing heat fusing forming method.The composition and the proportioning of described material special for bridge bearing slipping wear plate following (by weight):
Ultra high molecular polyethylene: 100 parts;
Solid compounded lubricant: 1-20 part;
Fill strongthener: 1-15 part;
Ultraviolet light absorption agent: 0.1-1.0 part;
The molecular weight of ultrahigh molecular weight polyethylene(UHMWPE) of the present invention is between the 300-900.
Solid compounded lubricant of the present invention is the binary compound system of silicone and tetrafluoroethylene or molybdenumdisulphide, or three-component compound system.There are good consistency in this organic polymer lubricant and inorganic lubricant composite body system with ultra high molecular polyethylene.Can be dispersed in the base-material through mixing, ultra high molecular polyethylene excellent abrasive and very low wear characteristic can be provided.
Filling strongthener of the present invention is mica, acicular silica or sheet glass, can be used alone, but also also mix together.Such inorganic filling strongthener is because it has stratiform, needle-like or sheet structure.Have certain enhancement, can give higher flexural strength of ultrahigh molecular weight polyethylene(UHMWPE) and modulus, improve its creep resistance, reduce the load metamorphism of material.Can also keep sheet material surfacing and slipperiness.
The preparation technology of ultra high molecular polyethylene bridge bearing slipping wear plate material of the present invention comprises that compression molding and blend extrude two kinds of preparation methods of a compression molding.
1. compression molding method.
Compression molding may further comprise the steps:
(1) with ultra high molecular polyethylene, fill strongthener, solid lubricant thorough mixing in high speed agitator by a certain percentage.
(2) mixture that mixes is quantitatively packed in the mould, carry out heating and melting, compression molding, whole process is divided into precompressed, heating, heat-insulation pressure keeping, pressurize cooling four-stage, but depanning during mold cools down to 80 ℃.Its technology is as follows:
1. precompressed
Preload pressure: 5-10Mpa;
Squeeze time: 5-15 minute;
2. heating
Heating and melting time: 10-40 minute;
Die temperature: 230-260 ℃;
3. heat-insulation pressure keeping time: 20-30 minute;
4. dwell pressure: 5-10Mpa;
5. cool off pressurize
Cooling time: 40-60 minute;
Dwell pressure: 8-12Mpa;
2. the blend extrusion-die pressing method of forming:
Extrusion moulding comprises the steps:
1. premix is about to ultra high molecular polyethylene, and solid lubricant, inorganic filling strongthener add high speed agitator in proportion and stir.
2. blend is extruded, and mixture is added twin screw extruder carry out the melt blending extruding pelletization, the blend expressing technique:
Extrusion temperature: 240-280 ℃
Extrusion screw rod rotating speed: 320rpm
3. its technology of compression molding is with method 1
Two kinds of methods all can produce low abrasion, high-intensity wearing plate.Wear-resisting ultra high molecular polyethylene performance of composites of the present invention is shown in table-1
Table-1 ultra high molecular weight polyethylene wear-resistant composite property.
Table-1 explanation the present invention is owing to the application of inorganic reinforcement, and the mechanical property of its matrix material and load-carrying properties obviously are better than other patent levels.
Embodiment
The invention will be further described below in conjunction with embodiment.
The composition of embodiment one to 12 and fill a prescription as shown in table 2.
Table 2 Example formulations is formed.
By table-2 listed prescriptions, during embodiment 1-4 assembly side divided, 1,3 group and 2,4 groups prepared slipping wear plate with compression molding and extrusion die platen press respectively.Embodiment 5-12 prescription group is made sheet material by compression molding.
The performance index of embodiment 1-12 are determined as the listed performance in table-3 respectively.
Table-3 composite materials properties
| Project | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Tensile strength MPa | 36.0 | 37.0 | 35.5 | 36.4 | 35.1 | 36.2 | 35.7 | 5.8 | 37.7 | 35.0 | 36.8 | 35.0 |
| Flexural strength MPa | 56.0 | 58.0 | 55.2 | 57.3 | 55.4 | 57.1 | 56.5 | 57.5 | 58.5 | 57.1 | 58.2 | 55.0 |
| Compressive strength MPa | 51.0 | 53.0 | 50.5 | 52.5 | 52.5 | 54.0 | 54.5 | 56.2 | 57.2 | 57.0 | 56.5 | 51.0 |
| Elongation at break % | 205. 0 | 208. 0 | 201. 0 | 203. 0 | 201. 5 | 204. 0 | 201. 0 | 200. 0 | 195. 0 | 200. 0 | 200. 0 | 195. 0 |
| Maximum bearing load MPa | 55.0 | 57.0 | 55.2 | 57.2 | 57.5 | 56.7 | 57.0 | 58.1 | 59.0 | 58.5 | 58.0 | 55.1 |
| The coefficient of sliding friction | 0.08 0 | 0.07 5 | 0.04 0 | 0.03 5 | 0.06 0 | 0.06 5 | 0.07 8 | 0.07 5 | 0.07 5 | 0.08 | 0.08 | 0.08 |
The material special for bridge bearing slipping wear plate of the present invention's preparation has high abrasion, high rigidity, anti-creep, ageing-resistant, the characteristics such as coefficient is little that wear away, rub, and can be widely used in the fields such as bridge bearing slipping wear plate, bearing, mining machinery.
Claims (6)
1, a kind of material special for bridge bearing slipping wear plate is a base material with the ultra high molecular polyethylene, adopts organic polymer, and high-abrasive material and inorganic solid lubricant compound system are as the lubricating and wear-resisting component; The employing inorganic fillings is an enhancement component, and is aided with ultraviolet light and makes antiaging agent, absorption agent; Make material special for bridge bearing slipping wear plate by mixing heat fusing forming method; It is characterized in that: the composition of described bridge bearing slipping wear plate material and proportioning are as follows by weight:
Ultra high molecular polyethylene: 100 parts;
Solid compounded lubricant: 1-20 part;
Fill strongthener: 1-15 part;
Ultraviolet light absorption agent: 0.1-1.0 part.
2, material special for bridge bearing slipping wear plate as claimed in claim 1 is characterized in that: the molecular weight of described ultrahigh molecular weight polyethylene(UHMWPE) is between the 300-900.
3, material special for bridge bearing slipping wear plate as claimed in claim 1 is characterized in that: described solid compounded lubricant is the binary compound system of silicone and tetrafluoroethylene or molybdenumdisulphide, or three-component compound system.
4, material special for bridge bearing slipping wear plate as claimed in claim 1 is characterized in that: described filling strongthener is mica, acicular silica or sheet glass.
5, the preparation method of the described material special for bridge bearing slipping wear plate of a kind of claim 1 adopts the compression molding preparation method, it is characterized in that:
Described compression molding may further comprise the steps:
(1) with ultra high molecular polyethylene, fill strongthener, solid lubricant thorough mixing in high speed agitator by a certain percentage;
(2) mixture that mixes is quantitatively packed in the mould, carry out heating and melting, compression molding, whole process is divided into precompressed, heating, heat-insulation pressure keeping, pressurize cooling four-stage, but depanning during mold cools down to 80 ℃.
6, the preparation method of the described material special for bridge bearing slipping wear plate of a kind of claim 1 adopts the compression molding preparation method, it is characterized in that:
The described blend extrusion-die pressing method of forming comprises the steps:
1. premix is about to ultra high molecular polyethylene, and solid lubricant, inorganic filling strongthener add high speed agitator in proportion and stir;
2. blend is extruded, and mixture is added twin screw extruder carry out the melt blending extruding pelletization, the blend expressing technique:
Extrusion temperature: 240-280 ℃
Extrusion screw rod rotating speed: 320rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810031849XA CN101333316A (en) | 2008-07-22 | 2008-07-22 | Material special for bridge bearing slipping wear plate and method for preparing same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810031849XA CN101333316A (en) | 2008-07-22 | 2008-07-22 | Material special for bridge bearing slipping wear plate and method for preparing same |
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| Publication Number | Publication Date |
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| CN101333316A true CN101333316A (en) | 2008-12-31 |
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| CNA200810031849XA Pending CN101333316A (en) | 2008-07-22 | 2008-07-22 | Material special for bridge bearing slipping wear plate and method for preparing same |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635068A (en) * | 2012-04-26 | 2012-08-15 | 上海亿霖润滑材料有限公司 | Lubricating structure between saddle and base body of bridge and lubricating method |
| CN102675710A (en) * | 2011-03-11 | 2012-09-19 | 北京化工大学 | Molding technique of high-density polyethylene sliding layer sheets for high-speed railway ballastless tracks |
| CN103286856A (en) * | 2013-06-07 | 2013-09-11 | 上海友德实业有限公司 | Lining plate and concrete mixing equipment and manufacturing method of lining plate |
| CN104945720A (en) * | 2015-07-24 | 2015-09-30 | 衡水中铁建工程橡胶有限责任公司 | Wear-resistant composite material with high friction coefficient and preparation method thereof |
| CN104961963A (en) * | 2015-07-13 | 2015-10-07 | 山东鲍尔浦实业有限公司 | High-weatherability ultra-high molecular weight polyethylene board material and application thereof |
| CN105860225A (en) * | 2016-05-31 | 2016-08-17 | 镇江伟民新材料制品有限公司 | Preparation method of high-strength bridge bearing sliding plate for high-speed rails |
| CN107674280A (en) * | 2017-09-29 | 2018-02-09 | 镇江泽枫霖建筑材料有限公司 | A kind of high performance building materials |
| CN108047533A (en) * | 2017-12-12 | 2018-05-18 | 四川国鑫机械制造有限公司 | Wear-resisting backing plate for steel-track transport steering rack and preparation method thereof |
| US10196577B2 (en) | 2015-09-30 | 2019-02-05 | Celanese Sales Germany Gmbh | Low friction squeak free assembly |
| CN111187459A (en) * | 2019-11-21 | 2020-05-22 | 衡水市橡胶总厂有限公司 | Wear-resistant material for bridge support and preparation process thereof |
| CN115286859A (en) * | 2022-08-30 | 2022-11-04 | 中国科学院兰州化学物理研究所 | Preparation method of high-damping high-wear-resistance shock insulation support friction material |
| CN115536928A (en) * | 2022-10-14 | 2022-12-30 | 陕西交通控股集团有限公司 | Composite material for bridge support sliding wear-resisting plate and preparation method thereof |
-
2008
- 2008-07-22 CN CNA200810031849XA patent/CN101333316A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102675710A (en) * | 2011-03-11 | 2012-09-19 | 北京化工大学 | Molding technique of high-density polyethylene sliding layer sheets for high-speed railway ballastless tracks |
| CN102635068A (en) * | 2012-04-26 | 2012-08-15 | 上海亿霖润滑材料有限公司 | Lubricating structure between saddle and base body of bridge and lubricating method |
| CN102635068B (en) * | 2012-04-26 | 2014-06-11 | 上海亿霖润滑材料有限公司 | Lubricating structure between saddle and base body of bridge and lubricating method |
| CN103286856A (en) * | 2013-06-07 | 2013-09-11 | 上海友德实业有限公司 | Lining plate and concrete mixing equipment and manufacturing method of lining plate |
| CN104961963A (en) * | 2015-07-13 | 2015-10-07 | 山东鲍尔浦实业有限公司 | High-weatherability ultra-high molecular weight polyethylene board material and application thereof |
| CN104945720A (en) * | 2015-07-24 | 2015-09-30 | 衡水中铁建工程橡胶有限责任公司 | Wear-resistant composite material with high friction coefficient and preparation method thereof |
| US10196577B2 (en) | 2015-09-30 | 2019-02-05 | Celanese Sales Germany Gmbh | Low friction squeak free assembly |
| CN105860225A (en) * | 2016-05-31 | 2016-08-17 | 镇江伟民新材料制品有限公司 | Preparation method of high-strength bridge bearing sliding plate for high-speed rails |
| CN107674280A (en) * | 2017-09-29 | 2018-02-09 | 镇江泽枫霖建筑材料有限公司 | A kind of high performance building materials |
| CN108047533A (en) * | 2017-12-12 | 2018-05-18 | 四川国鑫机械制造有限公司 | Wear-resisting backing plate for steel-track transport steering rack and preparation method thereof |
| CN111187459A (en) * | 2019-11-21 | 2020-05-22 | 衡水市橡胶总厂有限公司 | Wear-resistant material for bridge support and preparation process thereof |
| CN115286859A (en) * | 2022-08-30 | 2022-11-04 | 中国科学院兰州化学物理研究所 | Preparation method of high-damping high-wear-resistance shock insulation support friction material |
| CN115286859B (en) * | 2022-08-30 | 2023-08-08 | 中国科学院兰州化学物理研究所 | Preparation method of high-damping high-wear-resistance vibration-isolation support friction material |
| CN115536928A (en) * | 2022-10-14 | 2022-12-30 | 陕西交通控股集团有限公司 | Composite material for bridge support sliding wear-resisting plate and preparation method thereof |
| CN115536928B (en) * | 2022-10-14 | 2023-10-03 | 陕西交通控股集团有限公司 | Composite material for bridge support sliding wear-resistant plate and preparation method thereof |
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Application publication date: 20081231 |