CN1069037A - The manufacture method of friction brake wafer with tung oil modified phenolic resin - Google Patents
The manufacture method of friction brake wafer with tung oil modified phenolic resin Download PDFInfo
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- CN1069037A CN1069037A CN 91107262 CN91107262A CN1069037A CN 1069037 A CN1069037 A CN 1069037A CN 91107262 CN91107262 CN 91107262 CN 91107262 A CN91107262 A CN 91107262A CN 1069037 A CN1069037 A CN 1069037A
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- tung oil
- friction brake
- phenolic resin
- modified phenolic
- oil modified
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Abstract
A kind of tung oil modified phenolic resin brake(-holder) block that creates friction, be characterized in tung oil modified phenolic resin is incorporated into the resol that replaces former usefulness in the recipe ingredient of friction brake wafer, its product main performance index surpasses national standard, near or reached the performance index of Americanized friction brake wafer.Road test shows that this automotive friction brake(-holder) block is 2-3 times of former resol brake(-holder) block work-ing life, tung oil-modifiedly played toughness reinforcing effect, overcome shortcomings such as the original product inherent is crisp firmly, the intensity and the work-ing life of having improved brake(-holder) block, remarkable economic efficiency and social benefit have been arranged.
Description
The invention belongs to friction brake wafer with tung oil modified phenolic resin as caking agent, is the friction brake wafer field of filler maker motor vehicle with raw materials such as asbestos.
Motor vehicles, particularly automobile are existing historical for many years with the manufacturing and the application of friction brake wafer (claiming brake facing again), and at present, the friction brake wafer of production mostly is resol as caking agent both at home and abroad, makes as stopping composition with raw materials such as asbestos.Its shortcoming is the wear rate height, and particularly high temperature time wearing and tearing are more outstanding, and intensity is low, and hardness is big, poor toughness, and frangible or easy the be full of cracks, work-ing life is short, can not satisfy the requirement of user's (particularly mountain road) when driving vehicle.Through Patent Office of the People's Republic of China's literature search, 4 pieces in relevant category-B document, 1 piece of C class, U.S3438917, U.S3494884, U.S4.609381, U.S4758277 and U.S3844800, none and the closely related document of the present invention (category-A), U.S3438917 is wherein arranged, relate to resol, by generating modified phenolic resins with formaldehyde reaction again behind phenol and the isobutyric aldehyde precondensation, also available oleum lini and synourin oil, tung oil carry out modification, but any embodiment or technical solution are not provided.
The objective of the invention is provides a kind of manufacture method of friction brake wafer with tung oil modified phenolic resin and the brake(-holder) block product that creates friction at the deficiencies in the prior art, it has good toughness, hardness is low, wearing and tearing are little, and be 2-3 times that former resol is made the friction brake wafer product work-ing life.
The manufacture method of friction brake wafer with tung oil modified phenolic resin provided by the invention, its starting raw material consumption (by weight) is:
Tung oil 10-60 part
100 parts of phenol
Tosic acid (in tung oil weight) 0.05-0.5 part
100 parts in formaldehyde (37% aqueous solution)
Polycondensation catalyst (available NoOH, Ca(OH)
2, Ba(OH)
20.1-1 part
Thinner (available ethanol, acetone and toluene) is an amount of
With above-mentioned tung oil, the weighing respectively of the batching component of phenol and tosic acid, be added in and have agitator, in the reactor of condenser and thermometer, under agitation be warming up to 90-110 ℃, reaction times is 20-120 minute, when being cooled to 50-60 ℃, alkali neutralization with equivalent, regulate PH to 8, add above-mentioned formaldehyde and polycondensation catalyst sodium hydroxide again in still, under agitation be warming up to 80-100 ℃, reaction times is 60-100 minute, be cooled to 50-60 ℃,, regulate PH to 7 with the acid neutralization, dehydration is 1-2 hour under the 20KPa decompression, and it is standby as required aforesaid method to be made tung oil modified phenolic resin (A stage resin) adding proper amount of diluting.
The friction catch flake products is made used recipe ingredient (by weight):
Tung oil modified phenolic resin 15-35 part
Stearic acid 1-2 part
Glass fibre 10-20 part
Asbestos 30-40 part
Barite 20-30 part
Potassium felspar sand 2-7 part
Friction powder 4-8 part
Prescription weighing by the manufacturing of friction brake(-holder) block product, stopping composition Jia Ru Pinch such as tung oil modified phenolic resin, asbestos, glass fibre are closed Pinch closes temperature 30-80 ℃ in the machine, time 10-60 minute through the roll squeezer roll-in, temperature 50-120 ℃ time 5-8 minute, in 40-100 ℃ of following dry aftershaping, mold temperature is 140-200 ℃, time 1mm/1-2 ', pressure 300 public kg/cm
2, again through polishing, boring processing, test package warehouse-in.
The salient features that the friction brake wafer of tung oil modified phenolic resin manufacturing provided by the invention and national standard reach without the friction brake wafer of modified phenolic resins manufacturing relatively is listed as follows:
Annotate: frictional coefficient one hurdle, the test data of first row of embodiment for heating up, second row is the test data of cooling.
From showing visible friction brake wafer following characteristics are arranged with the tung oil modified phenolic resin manufacturing.
1. frictional coefficient varies with temperature for a short time, surpasses national standard, near friction brake wafer index made in U.S.A.
2. notched Izod impact strength reaches 3.59-3.7dJ/cm
2, surpassed national standard and friction brake wafer index made in U.S.A.
3. all the other every main performance index all are better than national standard.
Use without the friction brake wafer of resin modified phenol resin manufacturing from the synthetic chemical plant of the friction brake wafer of tung oil modified phenolic resin manufacturing and Chongqing and to make road test relatively, two kinds of brake(-holder) blocks are respectively applied for the result shows as follows on the same homemade Jiefang brand automobile:
1. travel with the friction brake wafer of tung oil modified phenolic resin manufacturing and also do not scrap in 3 months, and the friction brake wafer of factory's system resol manufacturing has only travelled and just scrapped in more than 20 day.
2. the be full of cracks situation of discarded slice, thin piece compares, and the friction brake wafer be full of cracks that the friction brake wafer of tung oil modified phenolic resin manufacturing does not have former resol to make is serious.
The present invention has following advantage:
1. tung oil-modified phenol formaldehyde resin replaces former resol to make the automotive friction brake(-holder) block, and its main performance index is all above national standard; Near or reached the performance index of Americanized friction brake wafer.
2. road test shows, this automotive friction brake(-holder) block be work-ing life the resol brake(-holder) block 2-3 doubly.
3. the automotive friction brake(-holder) block that tung oil-modified phenol formaldehyde resin is made has played toughness reinforcing effect really, has overcome the former shortcomings such as resol institute inherent is crisp firmly of using, and has improved braking
The intensity of sheet and work-ing life, favorable economic benefit and social benefit have been obtained.
Embodiment:
1. with 100 kilograms of phenol, 40 kilograms of tung oil, 0.4 kilogram of 50% the tosic acid aqueous solution, add and have agitator, temperature is taken into account in the reactor of reflux exchanger, under agitation is warming up to 90-100 ℃, reacts 30-56 minute, be cooled to 50-60 ℃, add alkali aqueous solution neutralization with the tosic acid equivalent.Then, 100 kilograms of the formalins of adding 37% in the affixture of tung oil-modified phenol, 2.7 kilograms of the aqueous solution of polycondensation catalyst 37-38% sodium hydroxide, regulate PH to 8, under agitation, in 80-100 ℃ of reaction 60-100 minute, be cooled to 50-60 ℃, the hydrochloric acid neutralization of adding 10% is regulated PH to 7, after treating to stir as far as possible; Place the 20Kpa decompression dehydration, add the appropriate amount of industrial alcohol dilution as required.Then, with 20 kilograms of tung oil modified phenolic resins, 1.8 kilograms of stearic acid, 15 kilograms in glass fibre, 35 kilograms in asbestos, 25 kilograms in barite, 5 kilograms of potassium felspar sands and 5 kilograms of Jia Ru of friction powder Pinch close machine Nei ， Pinch and close temperature 30-80 ℃, time 10-60 minute, through the roll squeezer roll-in, 50-120 ℃ of roll-in temperature, time 5-8 minute, dry aftershaping under 40-100 ℃, mold temperature is 140-200 ℃, time 1mm/1-2 ', pressure 300kg/cm
2, again through polishing, boring processing, test package warehouse-in.
2. with 100 kilograms of phenol, 20 kilograms of tung oil, 0.2 kilogram of adding of 50% the tosic acid aqueous solution has agitator, temperature is taken into account in the reactor of condenser, and all the other components and synthetic manufacturing process are with embodiment 1.
3. with 100 kilograms of phenol, 30 kilograms of tung oil, 0.3 kilogram of 50% the tosic acid aqueous solution adds and has agitator, and temperature is taken into account in the reactor of condenser, and all the other components and synthetic manufacturing process are with embodiment 1.
Comparative Examples:
60 kilograms of phenol, 23.7 kilograms in formaldehyde, 1.4 kilograms of polycondensation catalyst 41% aqueous sodium hydroxide solutions, method novolak resin according to routine, identical at stopping composition, the condition that manufacturing process is identical is made the automotive friction brake(-holder) block, compares with embodiments of the invention then.
Claims (2)
1, a kind of manufacture method of friction brake wafer with tung oil modified phenolic resin is characterized in that the starting raw material consumption (by weight) of this method is:
Tung oil 10-60
100 parts of phenol
Tosic acid (in tung oil weight) 0.05-0.5 part
100 parts in formaldehyde (37% aqueous solution)
Polycondensation catalyst 0.1-1 part
Thinner is an amount of
With above-mentioned tung oil, the batching component of phenol and tosic acid, weighing respectively, be added in and have agitator, in the reactor of condenser and thermometer, under agitation be warming up to 90-110 ℃, the reaction times is 20-120 minute, when being cooled to 50-60 ℃, alkali neutralization with equivalent, regulate PH to 8, add the consumption of above-mentioned formaldehyde and polycondensation catalyst sodium hydroxide again, under agitation be warming up to 80-100 ℃, reaction times is 60-100 minute, being cooled to 50-60 ℃ neutralizes with acid, regulate PH to 7, dehydration is 1-2 hour under the 20KPa decompression, and it is standby to add proper amount of diluting ethanol as required.
2, the product of making according to the described friction brake wafer with tung oil modified phenolic resin of claim 1 is characterized in that the used recipe ingredient of this product (by weight) is:
Tung oil modified phenolic resin 15-35 part
Stearic acid 1-2 part
Glass fibre 10-20 part
Asbestos 30-40 part
Barite 20-30 part
Potassium felspar sand 2-7 part
Friction powder 4-8 part
Prescription weighing by the manufacturing of friction brake(-holder) block product, stopping composition Jia Ru Pinch such as tung oil modified phenolic resin, asbestos, glass fibre are closed Pinch closes temperature 30-80 ℃ in the machine, time 10-60 minute, through the roll squeezer roll-in, temperature 50-120 ℃, time 5-8 minute, dry aftershaping under 40-100 ℃, mold temperature 140-200 ℃, time 1mm/1-2 ', pressure 300, public kg/cm
2, again through polishing, boring processing, test package warehouse-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91107262A CN1035259C (en) | 1991-08-01 | 1991-08-01 | Manufacturing method for friction brake wafer with tung oil modified phenolic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91107262A CN1035259C (en) | 1991-08-01 | 1991-08-01 | Manufacturing method for friction brake wafer with tung oil modified phenolic resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1069037A true CN1069037A (en) | 1993-02-17 |
| CN1035259C CN1035259C (en) | 1997-06-25 |
Family
ID=4908617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91107262A Expired - Fee Related CN1035259C (en) | 1991-08-01 | 1991-08-01 | Manufacturing method for friction brake wafer with tung oil modified phenolic resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035259C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235244A (en) * | 2014-08-29 | 2014-12-24 | 宁国飞鹰汽车零部件股份有限公司 | Tung oil modified phenolic resin automobile brake block |
| CN110325756A (en) * | 2017-03-16 | 2019-10-11 | 舍弗勒技术股份两合公司 | Wet friction material with the increased pressures cycle service life |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313519C (en) * | 2004-08-19 | 2007-05-02 | 湖南中野高科技特种材料有限公司 | Pnenolic aldehyde aluminium foil composite sandwich board and its production process |
| CN1311008C (en) * | 2004-11-10 | 2007-04-18 | 中国石油化工股份有限公司 | Thermosetting resin preparing method and use thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52138592A (en) * | 1976-05-15 | 1977-11-18 | Matsushita Electric Works Ltd | Preparation of modified phenolic resins |
| JPS60210616A (en) * | 1984-04-03 | 1985-10-23 | Hitachi Chem Co Ltd | Production of phenolic resin |
| JP2666010B2 (en) * | 1991-09-13 | 1997-10-22 | 松雄 相澤 | Trimmer mower |
-
1991
- 1991-08-01 CN CN91107262A patent/CN1035259C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235244A (en) * | 2014-08-29 | 2014-12-24 | 宁国飞鹰汽车零部件股份有限公司 | Tung oil modified phenolic resin automobile brake block |
| CN110325756A (en) * | 2017-03-16 | 2019-10-11 | 舍弗勒技术股份两合公司 | Wet friction material with the increased pressures cycle service life |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1035259C (en) | 1997-06-25 |
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