CN102003480B - Wind driven generator damping friction braking plate and preparation method thereof - Google Patents
Wind driven generator damping friction braking plate and preparation method thereof Download PDFInfo
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- CN102003480B CN102003480B CN2010105150774A CN201010515077A CN102003480B CN 102003480 B CN102003480 B CN 102003480B CN 2010105150774 A CN2010105150774 A CN 2010105150774A CN 201010515077 A CN201010515077 A CN 201010515077A CN 102003480 B CN102003480 B CN 102003480B
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Abstract
The invention relates to a friction material and a preparation method thereof. In order to solve the technical problems, a friction braking plate provided by the invention has the characteristics of high and low temperature resistance, abrasion resistance, low noise, stable friction braking torque, environmental friendliness and the like. The invention adopts the technical scheme that: a wind driven generator damping friction braking plate comprises an iron-based framework and a friction material layer stuck on the iron-based framework and is characterized in that: the friction material layer comprises the following components in part by weight: 8 to 12 parts of nano SiO2/boron modified phenolic resin, 2 to 4 parts of powdery hydrogenated nitrile rubber, 10 to 15 parts of KEVLAR fiber, 4 to 8 parts of carbon fiber, 14 to 18 parts of precipitated barium sulfate, 3 to 5 parts of cashew nut shell oil friction powder, 5 to 8 parts of metal sulfide, 3 to 5 parts of red copper fiber, 15 to 22 parts of calcium fluoride whisker, 2 to 4 parts of potassium titanate and 0.5 part of zinc stearate. The diameter of the KEVLAR fiber is 12 microns, and the length is 1 to 3 millimeters. The metal fiber is the red copper fiber, the diameter is 0.10 to 0.20 millimeter, and the length is 4 to 6 millimeters. The length of the carbon fiber is 3 to 20 millimeters. The metal sulfide is a CB300 compound and is a compound of cuprous sulfide and pyrite powder.
Description
Technical field
The present invention relates to a kind of friction material and preparation method thereof, especially carbon-based material wind-driven generator damping friction brake wafer and preparation method thereof.
Background technique
The fast development of World Economics and keen competition cause becoming increasingly conspicuous of energy problem and environmental problem, and as a kind of renewable energy sources of cleaning, wind generating technology receives the generally attention of countries in the world day by day.World's wind-powered electricity generation electric motor power at present reaches 4,900,000 kilowatts; But also with average annual 60% speed increment; Reflected a new trend of current International Power development, there is abundant wind energy resources in China, has external mature technique to use for reference again; The condition of large-scale development wind-powered electricity generation possesses, should develop actively.China adopts the wind speed measuring and calculating of 10m height, and wind energy resources theoretical reserves in land are 3.26 hundred million KW, and developable wind energy content is 2.53 hundred million KW, and China's coastal waters wind energy resources is about 3 times of land, and China can develop wind energy resources and be about 1,000,000,000 KW.Though compare with advanced international standard, China's wind-powered electricity generation development has very big gap, and China's wind-powered electricity generation has also obtained development faster in recent years, has tentatively possessed scale development and the ability of building large-scale wind power field.
The fast development of wind-powered electricity generation industry has driven the growth of wind-driven generator damping friction brake wafer application demand.As the core component of wind-driven generator, the damping friction brake wafer is extensively applied in the wind power generating set of all size, is a part indispensable in the moulding wind power generating set, is concerning the performance and the safety of wind-driven generator.The damping friction brake wafer makes wind-driven generator keep all speed runnings through the friction with mating plate, prevents to cause the blower fan operating overload because of wind-force increases suddenly, thereby has strengthened the stability of self greatly.When wind-driven generator overhauls, the damping friction brake wafer through with the fitting tightly of antithesis with blade of wind-driven generator braking, thereby guarantee the Security of wind-driven generator.
Wind-driven generator is very high to the requirement of friction material, needs stable friction, polishing machine and certain resistant of high or low temperature, and is little to the damage of driven disc simultaneously, can guarantee that product can keep stable performance in the environmental working condition of sleet and-40 ℃; Can guarantee that the life of product Danone reaches the operation cycle more than 20 years, moderate stable friction factor arranged; Material also requires to satisfy the ROHS of European Union environmental protection and the relevant requirement that limits the use of the material instruction, does not contain the material that asbestos, lead, cadmium, mercury, Cr VI etc. influence health, the whole dependence on import of present domestic this series products of wind-driven generator damping friction brake wafer.
Summary of the invention
The objective of the invention is to overcome the problem that exists in the above-mentioned background technology, a kind of wind-driven generator damping friction brake wafer is provided, this friction brake wafer should have characteristics such as high-low temperature resistant, wear-resistant, low noise and friction catch moment are stable, environmental protection.
Another object of the present invention provides the making method of above-mentioned wind-driven generator damping friction brake wafer, and it is easy that this method should have manufacturing, lower-cost characteristics.
The invention provides following technological scheme:
A kind of wind-driven generator damping friction brake wafer comprises the iron-based skeleton and is bonded in the friction material layer on the iron-based skeleton; It is characterized in that the composition and the weight portion that comprise in the friction material layer are: 8～12 parts of nanometer SiO2/ boron modified phenolic resins; 2～4 parts of powder hydrogenated nitrile-butadiene rubbers; 10～15 parts of KEVLAR fibers; 4～8 parts on graphite fiber; 14～18 parts of blanc fixes, 3～5 parts in cashew nut shell oil friction powder; 5～8 parts of metal sulfides; 3～5 parts of red copper fibers; 15～22 parts of calcirm-fluoride whiskers; 2～4 parts of potassium titanates; 0.5 part of zine stearate.
Said KEVLAR fiber diameter 12um, length 1～3mm.
Said steel fiber is the red copper fiber, diameter 0.10～0.20mm length 4～6mm.
Said carbon fiber length 3～20mm.
Said metal sulfide is the CB300 composite, is the composite of cuprous sulfide and pyrite powder.
In the said various raw material, the granularity of blanc fixe, metal sulfide, zine stearate≤300 orders, powder hydrogenated nitrile-butadiene rubber≤200 orders.
The preparation method of the friction material layer of above-mentioned friction braking plate for pneumatic clutch, carry out according to following steps:
1) it is subsequent use to take by weighing the various raw material of friction material layer by prescription;
2) earlier KEVLAR fiber and other raw material are all dropped in the high speed mixer, puddled 4～5 minutes, drop into chopped carbon fiber in the high speed mixer then, the time of puddling is 1～2 minute;
3) compression molding: coating release agent in the mold cavity of preheating; Then mixture is put into and carried out the once hot-forming processing of moulding in the mold cavity; Its hot pressing temperature is 160 ℃～170 ℃, and hot pressing time is 10～12 minutes, and hot pressing pressure is 11～13MPa;
4) heat cure: insulation is 1 hour when being warming up to 150 ℃; Then in 0.5 hour, be warming up to 160 ℃ of insulations 2 hours; In 0.5 hour, be warming up to 170 ℃ of insulations 1 hour again; In 0.5 hour, be warming up to 180 ℃ of insulations 2 hours then; In 1 hour, be warming up to 200 ℃ of insulations 2 hours at last;
5) the wind-driven generator damping friction brake wafer after solidifying carried out after the grinding.
The antirust processing of electrostatic plastic spraying is carried out on damping friction brake wafer steel backing surface, and carries out heat cure and handle.
The invention has the beneficial effects as follows: characteristics such as this friction brake wafer has high temperature resistant, wear-resistant, low noise and friction catch moment is stable, environmental protection; Through testing: friction factor still is higher than like product 15% in the time of 250 ℃, and wear rate (10
-7Cm
3/ Nm) then be like product 52%; In addition, the equal buyable of all raw material obtains, compliance with environmental protection requirements not only, and make easyly, cost is lower, has vast market prospect.
Description of drawings
Fig. 1 is a main TV structure schematic representation of the present invention.
Fig. 2 is that A-A among Fig. 1 is to structural representation.
Fig. 3 is that C-C among Fig. 1 is to the partial structurtes schematic representation.
Embodiment
Below technological scheme of the present invention is described further.
As shown in the figure, this wind-driven generator damping friction brake wafer comprises laminal iron-based skeleton 1 and is bonded in the friction material layer 2 on the iron-based skeleton binding face; Wherein the composition and the weight portion that comprise of friction material layer is: 8～12 parts of nanometer SiO2/ boron modified phenolic resins; 2～4 parts of powder hydrogenated nitrile-butadiene rubbers; 10～15 parts of KEVLAR fibers (being silicon carbide fiber), fiber diameter 12um, length 1～3mm; Graphite fiber (length of staple 3mm～20mm) 4～8 parts; 14～18 parts of blanc fixes, 3～5 parts in cashew nut shell oil friction powder; 5～8 parts of metal sulfides; 3～5 parts of red copper fibers; 15～22 parts of calcirm-fluoride whiskers; 2～4 parts of potassium titanates; 0.5 part of zine stearate.
Reinforcing fiber is the important component of friction material, has certain intensity and toughness, can play skeleton function, and the friction and wear behavior of material is had material impact.Chopped carbon fiber intensity is high, high-temperature behavior is good, wear-resistant and have certain sound absorption function, but deformability is poor; And after adding the KEVLAR fiber, can improve the combination property of friction material greatly.
Phenolic resin (PF) has good compression intensity, solvent resistance and flame retardant property, the matrix binder of doing commonly used.But common PF is because of the defective on the structure of molecule, has the hardness height, shortcomings such as matter is crisp, bonding force is little, poor heat resistance; Adopted nanometer SiO2/ boron blending and modifying phenolic resin for this reason.This pair of resin modified phenol resin; The heat resistance and the toughness of resin have been improved simultaneously; And will be fast, microwave heating technique efficient, energy-saving and environmental protection is applied in thermosetting phenolic resin synthetic, improves shortcomings such as the generated time that phenolic resin water-bath heating exists in producing is long, efficient is low, power consumption is big.In addition; Phenolic resin after the modification at high temperature is prone to form the carbonization heat insulation layer of cellular structure, can stop heat to spread to material internal, plays the effect of protection internal structure; Make friction material show good thermostability; Can also effectively suppress the generation of elevated temperature heat decline, stablize friction factor, reduce and brake hot-tempered sound and wear rate, the impact strength of goods is also improved significantly.Nanometer SiO2/ boron modified phenolic resin among the present invention available from Hexion Specialty Chemicals company (Hexion Specialty Chemicals, Inc.).
Said steel fiber is the red copper fiber, and metal sulfide is cuprous sulfide (a CB300 composite).
As recommendation, in the said various raw material, the granularity of blanc fixe, metal sulfide, zine stearate≤300 orders, powder hydrogenated nitrile-butadiene rubber≤200 orders.
Wind-driven generator damping friction brake wafer provided by the invention, described iron-based skeleton binding face is preferably rectangular, and friction material layer is processed analogous shape and is adhesively fixed on the iron-based skeleton binding face; The thickness of friction material layer can be confirmed as required.Be shaped on one on the connection joining seam of iron-based skeleton 1 right ends respectively and be used for the fixed hole 1-1 that bolt passes through, so that this braking plate is fixed on the arrestment mechanism of wind-driven generator.
Open on the said friction material layer and be shaped on two oblique trunking 2-2; Friction noise sound when this oblique trunking can obviously reduce to brake, and help the eliminating of rubbish (scraping from the dust that gets off from friction material layer during braking).
For strengthening the bonding strength of friction material layer 2 and iron-based skeleton 1, the present invention also is provided with several shrinkage pools on the binding face of iron-based skeleton 1, forms the some and matched projection 2-1 of shrinkage pool on the friction material layer.During making, when friction material layer was adhesively fixed on fan-shaped iron-based skeleton binding face through adhesive glue, said projection 2-1 filled and gets into corresponding shrinkage pool and be adhesively fixed.Can significantly strengthen the bonding strength of friction material layer 2 and iron-based skeleton 1 like this, increase substantially the quality of braking plate.
The whole outsourcings of the related raw material of the present invention obtain.
The preparation method of the friction material layer of above-mentioned wind-driven generator damping friction brake wafer, carry out according to following steps:
1) it is subsequent use to take by weighing various raw material by prescription;
2) earlier KEVLAR fiber and other raw material are all dropped in the high speed mixer, puddled 4～5 minutes, drop into chopped carbon fiber in the high speed mixer then, the time of puddling is 1～2 minute;
3) compression molding: coating release agent in the mold cavity of preheating; Then mixture is put into and carried out the once hot-forming processing of moulding in the mold cavity; Its hot pressing temperature is 160 ℃～170 ℃, and hot pressing time is 10～12 minutes, and hot pressing pressure is 11～13MPa;
4) heat cure: insulation is 1 hour when being warming up to 150 ℃; Then in 0.5 hour, be warming up to 160 ℃ of insulations 2 hours; In 0.5 hour, be warming up to 170 ℃ of insulations 1 hour again; In 0.5 hour, be warming up to 180 ℃ of insulations 2 hours then; In 1 hour, be warming up to 200 ℃ of insulations 2 hours at last;
5) the wind-driven generator damping friction brake wafer after solidifying carried out after the grinding.
The antirust processing of electrostatic plastic spraying is also carried out at the back side of said damping friction brake wafer iron-based skeleton, and carries out heat cure (heating promotes plastics solidification) and handle.
The friction brake wafer that above-mentioned processing method obtains has passed through comparison and detection, and it is following to obtain data:
Data can be known in the table: friction factor obviously is superior to contrast product (external like product); Wear rate is then significantly less than contrast product (external like product).
Embodiment 1: the friction material layer of wind-driven generator damping friction brake wafer, and included composition and weight portion are: 8 parts of nanometer SiO2/ boron modified phenolic resins; 2 parts of powder hydrogenated nitrile-butadiene rubbers; 10 parts of KEVLAR fibers (fiber diameter 12um, length 3mm); 5 parts on graphite fiber (length of staple 10mm); 18 parts of blanc fixes, 5 parts in cashew nut shell oil friction powder; 8 parts of metal sulfides; 3 parts of red copper fibers; 22 parts of calcirm-fluoride whiskers; 3 parts of potassium titanates; 0.5 part of zine stearate.
Said steel fiber is red copper fiber (diameter 0.15mm, length 5mm), and metal sulfide is that CB300 composite main component is (composite of cuprous sulfide and pyrite powder).
In the said various raw material, the granularity of blanc fixe, metal sulfide, zine stearate≤300 orders, powder hydrogenated nitrile-butadiene rubber≤200 orders.
The preparation method as previously mentioned.
Embodiment 2: the friction material layer of wind-driven generator damping friction brake wafer, and included composition and weight portion are: 12 parts of nanometer SiO2/ boron modified phenolic resins; 4 parts of powder hydrogenated nitrile-butadiene rubbers; 13 parts of KEVLAR fibers (fiber diameter 12um, length 1mm); 8 parts on graphite fiber (length of staple 3mm); 16 parts of blanc fixes, 4 parts in cashew nut shell oil friction powder; 5 parts of metal sulfides; 5 parts of red copper fibers; 15 parts of calcirm-fluoride whiskers; 2 parts of potassium titanates; 0.5 part of zine stearate.
Said steel fiber is red copper fiber (diameter 0.20mm, length 4mm), and metal sulfide is that CB300 composite main component is (composite of cuprous sulfide and pyrite powder).
In the said various raw material, the granularity of blanc fixe, metal sulfide, zine stearate≤300 orders, powder hydrogenated nitrile-butadiene rubber≤200 orders.
The preparation method as previously mentioned.
Embodiment 3: the friction material layer of wind-driven generator damping friction brake wafer, and included composition and weight portion are: 10 parts of nanometer SiO2/ boron modified phenolic resins; 3 parts of powder hydrogenated nitrile-butadiene rubbers; 15 parts of KEVLAR fibers (fiber diameter 12um, length 2mm); 4 parts on graphite fiber (length of staple 20mm); 14 parts of blanc fixes, 3 parts in cashew nut shell oil friction powder; 7 parts of metal sulfides; 4 parts of red copper fibers; 18 parts of calcirm-fluoride whiskers; 2 parts of potassium titanates; 0.5 part of zine stearate.
Said steel fiber is red copper fiber (diameter 0.10mm, length 4mm), and metal sulfide is that CB300 composite main component is (composite of cuprous sulfide and pyrite powder).
In the said various raw material, the granularity of blanc fixe, metal sulfide, zine stearate≤300 orders, powder hydrogenated nitrile-butadiene rubber≤200 orders.
The preparation method as previously mentioned.
Claims (6)
1. a wind-driven generator damping friction brake wafer comprises the iron-based skeleton and is bonded in the friction material layer on the iron-based skeleton; It is characterized in that the composition and the weight portion that comprise in the friction material layer are: 8～12 parts of nanometer SiO2/ boron modified phenolic resins; 2～4 parts of powder hydrogenated nitrile-butadiene rubbers; 10～15 parts of KEVLAR fibers; 4～8 parts on graphite fiber; 14～18 parts of blanc fixes, 3～5 parts in cashew nut shell oil friction powder; 5～8 parts of metal sulfides; 3～5 parts of red copper fibers; 15～22 parts of calcirm-fluoride whiskers; 2～4 parts of potassium titanates; 0.5 part of zine stearate.
2. a kind of wind-driven generator damping friction brake wafer according to claim 1 is characterized in that: said KEVLAR fiber diameter 12um, length 1～3mm.
3. a kind of wind-driven generator damping friction brake wafer according to claim 1 is characterized in that: the diameter 0.10～0.20mm of said red copper fiber, length 4～6mm.
4. according to claim 2 or 3 described a kind of wind-driven generator damping friction brake wafers, it is characterized in that: said carbon fiber length 3～20mm.
5. a kind of wind-driven generator damping friction brake wafer according to claim 4, it is characterized in that: said metal sulfide is the composite of cuprous sulfide and pyrite powder.
6. a kind of wind-driven generator damping friction brake wafer according to claim 5 is characterized in that: the granularity of blanc fixe, metal sulfide, zine stearate≤300 orders, powder hydrogenated nitrile-butadiene rubber≤200 orders.
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| CN102606660B (en) * | 2012-03-05 | 2015-10-14 | 临安华龙摩擦材料有限公司 | Magnetic clutch brake strip and preparation method thereof |
| CN102619914B (en) * | 2012-03-15 | 2016-08-10 | 临安华龙摩擦材料有限公司 | Disc type brake block of petroleum and preparation method thereof |
| JP6439607B2 (en) * | 2015-06-19 | 2018-12-19 | 株式会社アドヴィックス | Non-asbestos friction material |
| CN108488281B (en) * | 2018-03-22 | 2020-03-20 | 杭州科技职业技术学院 | Wear-resistant low-noise automobile brake pad and preparation method thereof |
| CN111350781A (en) * | 2020-05-07 | 2020-06-30 | 衡水众成摩擦材料有限公司 | Copper-free friction lining and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6479413B1 (en) * | 2000-08-30 | 2002-11-12 | Benjamin V. Booher | Composite friction elements and pultrusion method of making |
| CN101024760A (en) * | 2007-02-14 | 2007-08-29 | 西北工业大学 | Flexible-paper-base friction material |
| CN101074289A (en) * | 2007-06-26 | 2007-11-21 | 华南理工大学 | Double hot-rolling composite friction material and its production |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6228815B1 (en) * | 1999-06-29 | 2001-05-08 | Alliedsignal Inc. | Solid lubricants containing bismuth sulfide for use in friction lining |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6479413B1 (en) * | 2000-08-30 | 2002-11-12 | Benjamin V. Booher | Composite friction elements and pultrusion method of making |
| CN101024760A (en) * | 2007-02-14 | 2007-08-29 | 西北工业大学 | Flexible-paper-base friction material |
| CN101074289A (en) * | 2007-06-26 | 2007-11-21 | 华南理工大学 | Double hot-rolling composite friction material and its production |
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Address after: 311300 No.19 songyun Road, Longgang Town, Lin'an District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou hanleke New Material Technology Co.,Ltd. Address before: 311322 No. 130 Longgang street, Longgang Town, Zhejiang, Ling'an Patentee before: LIN'AN HUALONG FRICTION MATERIAL Co.,Ltd. |
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