CN1228461A - Semimetallic non-asbestos brake block - Google Patents
Semimetallic non-asbestos brake block Download PDFInfo
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- CN1228461A CN1228461A CN 98105056 CN98105056A CN1228461A CN 1228461 A CN1228461 A CN 1228461A CN 98105056 CN98105056 CN 98105056 CN 98105056 A CN98105056 A CN 98105056A CN 1228461 A CN1228461 A CN 1228461A
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- kilograms
- friction material
- composite friction
- brake block
- backing plate
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Abstract
The present invention relates to a semi-metallic asbestos-free brake block, and the composition of the friction composite material adhered on the steel back plate comprises (wt%) phenolic resin 15-25, nitrile rubber 2-8, high abrasion resistant furnace black 3-8, white carbon black 2-6, zinc oxide 1-3, silicon carbide 5-8, sulfur 0.5-2.5, fine iron ore powder 34-42, carbon fibre 5-10, ziram 0.2-0.6, copper fibre 2-7, N-cyclohexyl-N'-phenyl-p-phenylenediamine 0.3-3.0, glass fibre 2-8 and a proper quantity of acetone. Said invented product is smooth and stable for braking, low in noise, firm in adhesion of the friction composite material and steel back plate, abrasion resistant, non-cracking and long in service life.
Description
The present invention relates to a kind of braking control system of Motor vehicles, particularly the braking element brake facing.
At present non-asbestos brake block is various in style, as on November 19th, 1997 disclosed＜a kind of brake facing (application number 96115295.8) its to the effect that: brake facing includes following component: hybrid resin, inorganic macromolecule compound, ground barium sulfate, powdered iron ore, carbide of calcium, metal oxide, graphite, molybdenumdisulphide, glass fibre, steel fiber, the copper fiber be made up of resol and urea-formaldehyde resin.In preparation, carry out the blending and modifying processing with stirring in resol and the urea-formaldehyde resin input kneader earlier, and then carry out following preparation process.Its weak point is that the wear resistance of friction materials is not good enough, and itself and steel backing bonding is not firm.
The object of the present invention is to provide the bond semimetallic non-asbestos brake block of firm long service life of a kind of frictional coefficient height, composite friction material and Steel Backing Plate.
Purpose of the present invention can realize by following measure: a kind of semimetallic non-asbestos brake block, and it includes Steel Backing Plate and through the composite friction material of molded curing to the Steel Backing Plate, it is characterized in that: the weight percent of this each component of composite friction material is as follows:
Resol 15～25
Paracril 2～8
High abrasion furnace black(HAF) 3～8
White carbon black 2～6
Zinc oxide 1～3
Silicon carbide 5～8
Sulfur 0.5～2.5
Refined iron mine powder 34～42
Carbon fiber 5～10
Ziram 0.2～0.6
Copper fiber 2～7
N-cyclohexyl-N '-diphenyl-para-phenylene diamine 0.3～3.0
Glass fibre 2～8
Acetone is an amount of
Best semimetallic non-asbestos brake block, the weight percent of its each component of composite friction material is as follows:
Resol 16～23
Paracril 3～5
High abrasion furnace black(HAF) 4～7
White carbon black 3～5
Zinc oxide 1.5～2.2
Silicon carbide 4～7
Sulfur 1.0～1.5
Refined iron mine powder 38～40
Carbon fiber 6～8
Ziram 0.3～0.5
Copper fiber 3～6
CPPD N cyclohexyl N 1.0～1.9
Glass fibre 3～6
Acetone is an amount of
Be preferably in the one side that Steel Backing Plate is connected with composite friction material and scribble DL
XsThe type tackiness agent.
The present invention mainly is: composite friction material adopts and makes binding agent with acrylonitrile butadiene rubber modified resol, makes friction modifier with high abrasion furnace black(HAF) and white carbon black, makes anti-wear agent with silicon carbide, adopts DL simultaneously again
XsThe type tackiness agent is bonded in above-mentioned composite friction material and Steel Backing Plate one and surpasses.
Friction plate of the present invention includes Steel Backing Plate and through the composite friction material of molded curing to the Steel Backing Plate.This composite friction material mainly includes binding agent, properties-correcting agent, body material, friction modifier, anti-wear agent and toughener.Wherein the binding agent principal constituent of composite friction material is a resol, and it both can combine each component securely, had certain rigidity again.Its consumption excessive cost height, consumption cross that I haven't seen you for ages influences the stability of composite friction material.It is 15～25% more suitable generally to account in prescription, preferably accounts for 16～23%.But above-mentioned resol can not directly use, and must can use after with its some performance change with properties-correcting agent.Properties-correcting agent of the present invention includes paracril, vulcanizing agent, promotor, anti-aging agent and solvent.Wherein it can improve the fragility of resol as the paracril of principal constituent, makes it to have certain snappiness.But consumption too much can cause friction plate hardness not enough, and it is more suitable that generally it accounts for 2-8% in prescription, preferably accounts for 3～5%.Sulfur is the vulcanizing agent of paracril, and its consumption too much can make paracril crisp firmly, and it is 0.5～2.5% more suitable generally to account in prescription, preferably accounts for 1.0～1.5%.Zinc oxide and ziram are to promote paracril sulfurized promotor, and consumption too much can increase cost, and generally the former accounts for 1～3% in prescription, the latter accounts for 0.2～0.6%, and preferably the former accounts for 1.5～2.2% latter and accounts for 0.3～0.5%.For preventing paracril sulfuration back premature aging, be added with anti-aging agent N-cyclohexyl-N '-diphenyl-para-phenylene diamine in prescription, it is 0.3～3.0% more suitable that its consumption generally accounts in prescription, preferably accounts for 1.0～1.9%, if the very few DeGrain of consumption, consumption too much can increase cost.The used solvent of properties-correcting agent is an acetone, since solvent with after it is vapored away, not as the composition of composite friction material, therefore its consumption needn't strict be controlled, but its consumption is also wanted suitably, be unfavorable for its sulfuration if paracril fully can not be dissolved very little, and consumption too much can cause waste, general consumption is as the criterion paracril fully can be dissolved.The matrix of composite friction material be refined iron mine powder (iron-holder is greater than 60%, and fineness is 100～150 orders) it in prescription, account for 34～42%, preferably account for 38～40%.Friction modifier in the composite friction material includes high abrasion furnace black(HAF) and white carbon black (hydrated SiO 2).Wherein be filled in the high abrasion furnace black(HAF) in the paracril, it can not only improve the wear-resisting of composite friction material, and anti-ablation, heat conduction, performance such as lubricated can prevent that also friction plate from skidding when brake.But its consumption is too much unsuitable, can reduce frictional coefficient too much, and brake is sent out sliding.It is 3～8% more suitable generally to account in prescription, preferably accounts for 4～7%.It can improve the frictional coefficient of brake facing white carbon black, increases the gripping power of tire road pavement, and consumption too much can increase cost, and it is 2～6% more suitable generally to account in prescription, preferably accounts for 3～5%.Also have anti-wear agent silicon carbide in composite friction material, it can improve the abrasive wear resistance of composite friction material, and its wearing and tearing are reduced, and increases work-ing life.The very few DeGrain of its consumption, the too much frictional coefficient of its consumption can be above standard simultaneously that cost also will increase, and it is 5～8% more suitable therefore generally to account in prescription, preferably accounts for 4～7%.Also have strongthener in composite friction material, it includes glass fibre, copper fiber and carbon fiber, and they can improve the shock strength of composite friction material.Wherein glass fibre also can improve the thermotolerance of product, but consumption is unsuitable too much, can increase the fragility of composite friction material too much, and it is 2～8% more suitable generally to account in prescription, preferably accounts for 3～6%.The copper fiber also can improve the heat conductivility of composite friction material, and noise is arranged during as the too hard easy damaged antithesis of the too much composite friction material of consumption, brake, and generally it accounts for 2～7% more suitablely in prescription, preferably accounts for 3～6%.It also can reduce brake noise carbon fiber, and consumption is many can to increase cost, and generally it accounts for 5～10% more suitablely in prescription, preferably accounts for 6～8%.
The preparation method of friction plate of the present invention is as follows:
1, composite friction material give processing:
1. mix: at first paracril is dissolved with acetoneand ethyl acetate, and then it is mixed with Sulfur, high abrasion furnace black(HAF), zinc oxide, N-cyclohexyl-N '-diphenyl-para-phenylene diamine and ziram, fully stir and make it evenly, what obtain is modified butadiene acrylonitrile rubber.This modified butadiene acrylonitrile rubber that obtains is mixed with resol, white carbon black, silicon carbide, refined iron mine powder, carbon fiber, copper fiber, glass fibre again, fully stir and make it uniform mixing, the dispersed particle that obtains is the material that mixes.
2. dry: that the material that mixes in 60～80 ℃ of dryings, during drying will be stirred material for making uniform drying.Stop drying when material is tack-free, this moment, solvent volatilized substantially fully.
3. pulverize: the material that drying is crossed is cooled to normal temperature, drops into to pulverize in the pulverizer and cross 80 mesh sieves, gets sieve down less than 80 purpose powder.
2, Steel Backing Plate give processing:
1. the Steel Backing Plate with moulding carries out the degreasing and rust removal processing.
2. brush adhesive: the one side that is connected with composite friction material at Steel Backing Plate scribbles tackiness agent, and this tackiness agent trade(brand)name is DL
XsType tackiness agent (production of Xingda water treatment plant, Lvshun).It is dry under 60～80 ℃ the condition in temperature that tackiness agent has been coated with the back, to coating tack-free till.
3, compression molding
1. compacting: coating release agent in the mould that Xiang Yure crosses, put into Steel Backing Plate treated mistake and that scribble tackiness agent.Again load weighted composite friction material is placed die cavity, under 170～180 ℃, unit pressure 15～30MPa condition, suppress 1～1.5 minute/mm, so just obtain material is fixed on work in-process on the steel backing.
2. solidification treatment: be placed in the anchor clamps half-finished, place baking oven then, kept 3 hours prior to about 130 ℃, kept 3 hours in about 160 ℃, stop heating afterwards, treating that temperature is reduced to can discharging below 60 ℃.
4, aftertreatment: can obtain finished product through flour milling with after spraying paint.
The present invention has following advantage compared to existing technology:
1, brake facing braking of the present invention is steady, noise is little.
2, brake facing of the present invention do not chap, not stratified, wear resistance good, long service life.
3, the cohesive strength height of brake facing composite friction material of the present invention and Steel Backing Plate, the piece phenomenon is fallen in no breakdown.
Example 1
In the container that fills 8 kilograms of paracrils, add 20 kilograms of acetone, stir and make it dissolving.Get 0.5 kilogram of Sulfur, 0.2 kilogram of ziram, 0.3 kilogram of N-cyclohexyl-N '-diphenyl-para-phenylene diamine, 1 kilogram of zinc oxide and 7 kilograms of high abrasion furnace black(HAF) again and add in the said vesse, stir and make it uniform mixing.And then in this reaction vessel, add 15 kilograms of resol, 3 kilograms of white carbon blacks, 5 kilograms of silicon carbide, 40 kilograms of refined iron mine powders, 10 kilograms of carbon fibers, 7 kilograms of copper fibers, 3 kilograms of glass fibre, fully stir and make it uniform mixing.The material that mixes is placed in the aeration cabinet in 60～80 ℃ of dryings, stir material during this 2 times.After 2 hours, check the tack-free drying that promptly stops of material.The material that drying is crossed is cooled to normal temperature, drops into crusher for crushing, crosses 80 mesh sieves, and it is standby less than 80 purpose powder down to get sieve.Steel Backing Plate with moulding carries out the degreasing and rust removal processing in addition.The one side that is connected with composite friction material at Steel Backing Plate scribbles the tackiness agent that water conditioner factory of Lvshun Xingda produces, and its commodity are called DL
XsThe type tackiness agent, be coated with the back in 60 ℃～80 ℃ baking oven inner dryings, to coating tack-free till.In addition mould is placed in the hydropress, give hot temperature and be controlled at 160～180 ℃.Reach when mould and open mould after the temperature of regulation and coat the Zinic stearas releasing agent, put into the Steel Backing Plate that scribbles tackiness agent.Place die cavity middle berth flat cover upper mould cover to push hydropress load weighted material, under 170～180 ℃, unit pressure 15～30MPa condition, suppress 1～1.5 minute/mm.Molding obtains work in-process after the moulding, is placed in the anchor clamps, delivers to then in the baking oven, keeps 3 hours prior to about 130 ℃, keeps 3 hours in about 160 ℃ again, stops heating afterwards, treats that temperature reduces to 60 ℃ with bottom discharge.Can obtain finished product through flour milling with after spraying paint again.
Example 2
Repeat the operation of example 1, wherein 16 kilograms in resol, 2 kilograms of paracrils, 4 kilograms of high abrasion furnace black(HAF), 5 kilograms of white carbon blacks, 1.5 kilograms in zinc oxide, 7 kilograms in silicon carbide, 1 kilogram of Sulfur, 42 kilograms of refined iron mine powders, 8 kilograms on carbon fiber, 0.5 kilogram of ziram, 6 kilograms of copper fibers, N-cyclohexyl-N '-1 kilogram of diphenyl-para-phenylene diamine, 3 kilograms in glass fibre, 15 kilograms in acetone.
Example 3
Repeat the operation of example 1, wherein 23 kilograms in resol, 5 kilograms of paracrils, 3 kilograms of high abrasion furnace black(HAF), 6 kilograms of white carbon blacks, 2.2 kilograms in zinc oxide, 8 kilograms in silicon carbide, 2.5 kilograms of Sulfurs, 38 kilograms of refined iron mine powders, 5 kilograms on carbon fiber, 0.3 kilogram of ziram, 2 kilograms of copper fibers, N-cyclohexyl-N '-3 kilograms of diphenyl-para-phenylene diamines, 2 kilograms in glass fibre, 18 kilograms in acetone.
Example 4
Repeat the operation of example 1, wherein 25 kilograms in resol, 3 kilograms of paracrils, 8 kilograms of high abrasion furnace black(HAF), 2 kilograms of white carbon blacks, 3 kilograms in zinc oxide, 4 kilograms in silicon carbide, 1.5 kilograms of Sulfurs, 34 kilograms of refined iron mine powders, 6 kilograms on carbon fiber, 0.6 kilogram of ziram, 3 kilograms of copper fibers, N-cyclohexyl-N '-1.9 kilograms of diphenyl-para-phenylene diamines, 8 kilograms in glass fibre, 16 kilograms in acetone.
Product of the present invention is as follows through China's First Automotive Works Changchun automotive research institute test result:
Frictional coefficient
100 ℃ of 150 ℃ 200 ℃ 250 ℃ of 300 ℃ of GB5763 0.30～0.60 0.25～0.60 0.20～0.60 0.25～0.60 0.30～0.60 products 0.51 0.52 0.55 0.55 0.55 of the present invention
Wear rate 10
-7Cm
3/ N.m
100 ℃ of 150 ℃ of 200 ℃ of GB5763≤0.51≤0.71≤1.02 products 0.51 0.64 0.44 of the present invention are annotated: the per-cent in the present specification all is weight percentage.
Claims (3)
1, a kind of semimetallic non-asbestos brake block, it includes Steel Backing Plate and through the composite friction material of molded curing to the Steel Backing Plate, it is characterized in that: the weight percent of this each component of composite friction material is as follows:
Resol 15～25
Paracril 2～8
High abrasion furnace black(HAF) 3～8
White carbon black 2～6
Zinc oxide 1～3
Silicon carbide 5～8
Sulfur 0.5～2.5
Refined iron mine powder 34～42
Carbon fiber 5～10
Methyl disulfide is for chloro zinc formate 0.2～0.6
Copper fiber 2～7
N-cyclohexyl-N '-diphenyl-para-phenylene diamine 0.3～3.0
Glass fibre 2～8
Acetone is an amount of
2, semimetallic non-asbestos brake block according to claim 1 is characterized in that: the weight percent of each component of composite friction material is as follows:
Resol 16～23
Paracril 3～5
High abrasion furnace black(HAF) 4～7
White carbon black 3～5
Zinc oxide 1.5～2.2
Silicon carbide 4～7
Sulfur 1.0～1.5
Refined iron mine powder 38～40
Carbon fiber 6～8
Ziram 0.3～0.5
Copper fiber 3～6
CPPD N cyclohexyl N 1.0～1.9
Glass fibre 3～6
Acetone is an amount of
3, semimetallic non-asbestos brake block according to claim 1 and 2 is characterized in that: the one side that is connected with composite friction material at Steel Backing Plate scribbles DL
XsThe type tackiness agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98105056 CN1228461A (en) | 1998-03-06 | 1998-03-06 | Semimetallic non-asbestos brake block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98105056 CN1228461A (en) | 1998-03-06 | 1998-03-06 | Semimetallic non-asbestos brake block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1228461A true CN1228461A (en) | 1999-09-15 |
Family
ID=5218667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98105056 Pending CN1228461A (en) | 1998-03-06 | 1998-03-06 | Semimetallic non-asbestos brake block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1228461A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332141C (en) * | 2005-03-09 | 2007-08-15 | 中信重型机械公司 | Method for preparing disc-brake shoe of mine hoist |
| CN100350013C (en) * | 2006-03-10 | 2007-11-21 | 江阴职业技术学院 | Hight-performance semi-metal brake sheet material without asbestos |
| CN100384960C (en) * | 2006-05-22 | 2008-04-30 | 孙忠义 | Brake block friction material granulating manufacturing process |
| CN100406501C (en) * | 2005-09-06 | 2008-07-30 | 郭晓明 | Formulation and preparation method of polishing abrasive tools prepared by glass fiber leftover material |
| CN101550975B (en) * | 2009-05-22 | 2010-10-27 | 莱州鲁达刹车片有限公司 | Energy-saving biodegradable fiber brake shoe and wet rolling production technique thereof |
| CN101205318B (en) * | 2007-11-27 | 2011-01-26 | 信义集团公司 | Brake strap prepared by employing asbestos-free composite material |
| CN101624503B (en) * | 2009-08-18 | 2011-06-08 | 哈尔滨六环胶粘剂有限公司 | Black matt impregnated glue preparation method |
| CN102009563B (en) * | 2009-09-04 | 2012-08-29 | 莹信工业股份有限公司 | Composite rim and manufacture method thereof |
-
1998
- 1998-03-06 CN CN 98105056 patent/CN1228461A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332141C (en) * | 2005-03-09 | 2007-08-15 | 中信重型机械公司 | Method for preparing disc-brake shoe of mine hoist |
| CN100406501C (en) * | 2005-09-06 | 2008-07-30 | 郭晓明 | Formulation and preparation method of polishing abrasive tools prepared by glass fiber leftover material |
| CN100350013C (en) * | 2006-03-10 | 2007-11-21 | 江阴职业技术学院 | Hight-performance semi-metal brake sheet material without asbestos |
| CN100384960C (en) * | 2006-05-22 | 2008-04-30 | 孙忠义 | Brake block friction material granulating manufacturing process |
| CN101205318B (en) * | 2007-11-27 | 2011-01-26 | 信义集团公司 | Brake strap prepared by employing asbestos-free composite material |
| CN101550975B (en) * | 2009-05-22 | 2010-10-27 | 莱州鲁达刹车片有限公司 | Energy-saving biodegradable fiber brake shoe and wet rolling production technique thereof |
| CN101624503B (en) * | 2009-08-18 | 2011-06-08 | 哈尔滨六环胶粘剂有限公司 | Black matt impregnated glue preparation method |
| CN102009563B (en) * | 2009-09-04 | 2012-08-29 | 莹信工业股份有限公司 | Composite rim and manufacture method thereof |
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