CN103030922A - Water-soluble phenolic resin solution for woven friction materials and preparation method thereof - Google Patents
Water-soluble phenolic resin solution for woven friction materials and preparation method thereof Download PDFInfo
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- CN103030922A CN103030922A CN2012105213132A CN201210521313A CN103030922A CN 103030922 A CN103030922 A CN 103030922A CN 2012105213132 A CN2012105213132 A CN 2012105213132A CN 201210521313 A CN201210521313 A CN 201210521313A CN 103030922 A CN103030922 A CN 103030922A
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Abstract
The invention provides a water-soluble phenolic resin solution for woven friction materials and a preparation method thereof. According to the water-soluble phenolic resin solution, polyvinyl alcohol, nano attapulgite and micro copper powder are utilized to modify the water-soluble phenolic resin. In the synthesis technique of the water-soluble phenolic resin solution, a small amount of polyvinyl alcohol is added to enhance the water solubility, bonding property and toughness of the resin; and meanwhile, the nano attapulgite and micro copper powder granules are added to enhance the heat resistance and wear resistance of the resin and also further improve the toughness. When being used as a bonding agent for preparing the woven friction material, the water-soluble phenolic resin solution has the advantages of low cost and low environmental pollution, can enhance the bonding property of fibers and other materials with slurry so as to prevent the slurry from falling off the material surface, can enhance the high temperature resistance and frictional resistance of the friction material, and effectively avoids reduction of the friction factor due to the thermal decomposition of the resin.
Description
Technical field
The present invention relates to the water soluble phenol resin technical field, concrete a kind of Weaving type friction materials water soluble phenol resin caking agent and preparation method thereof.
Background technology
The Weaving type friction materialss such as the brake facing in automobile and other mechanical means or clutch surface generally are comprised of binding agent, fortifying fibre, filler etc., its preparation technology generally adopts wet processing, the caking agent organic solvent dissolution that namely first resin and rubber is formed, add filler and be prepared into slurry, again with the fortifying fibre dipping sizing agent, braiding shaping base is then hot-forming with the shape base after the oven dry, through obtaining the friction materials goods after the aftertreatments such as hot setting, polishing and boring.
In above-mentioned preparation technology, when using soluble phenolic resin to prepare slurry, need to use a large amount of organic solvents, need to use a certain amount of rubber for the adhesiveproperties that improves slurry in addition.But the use of organic solvent and rubber can improve production cost, and volatilization and the inflammable and explosive performance of organic solvent constitute a threat to production safety simultaneously.Therefore, often use water soluble phenol resin to replace soluble phenolic resin, to avoid the use of organic solvent and rubber.But, the decomposition temperature of water soluble phenol resin is about 250 ℃, thermotolerance is lower, and in friction process, the temperature of compiling friction material surface is higher, easily decomposes at this high-temperature zone water soluble phenol resin, and the material of decomposition forms one deck gaseous state or liquid film in friction material surface, cause the frictional coefficient of friction materials to reduce, the safe operation to vehicle and other mechanical means when serious consists of larger threat; In addition, because water soluble phenol resin fragility is large, be prone to the phenomenon that slurry comes off from fiber surface after to be dried with the standby slurry impregnation of fibers of water-soluble phenolic resin-made.
In order to overcome the defectives such as the thermotolerance that water soluble phenol resin exists is not enough, fragility is large, need to carry out modification to water soluble phenol resin, improving its thermotolerance and toughness, thereby satisfy the actual needs of friction materials.
Summary of the invention
Technical purpose of the present invention be for above-mentioned with water soluble phenol resin existing deficiency during as the binding agent of preparation Weaving type friction materials, a kind of water-soluble phenol resin solution of Weaving type friction materials of modification is provided, the water soluble phenol resin solution cost of this modification is low, thermotolerance and toughness are greatly improved, can replace soluble phenolic resin as the binding agent of preparation Weaving type friction materials, not only save a large amount of organic solvents, and reduced cost, reduced the pollution of environment.
The water-soluble phenol resin solution of a kind of Weaving type friction materials is comprised of phenolic resin aqueous solution, nano level attapulgite and the Micron-Sized Copper Powders Coated of polyvinyl alcohol modification; According to the mass fraction meter, the phenolic resin aqueous solution of described polyvinyl alcohol modification is by the formalin of the phenol of 100 mass parts, 110 ~ 120 mass parts, the polyvinyl alcohol of 1 ~ 20 mass parts, and the basic catalyst hybrid reaction of 4 ~ 10 mass parts forms, and wherein the mass percent concentration of formalin is 30% ~ 45%; Be 100 mass fraction meters according to phenol content in the phenolic resin aqueous solution of polyvinyl alcohol modification, described nano level attapulgite content is 1 ~ 4 mass parts, and Micron-Sized Copper Powders Coated content is 1 ~ 2 mass parts.
Wherein, basic catalyst includes but not limited to one or several in ammoniacal liquor, hexamethylenetetramine, yellow soda ash, amine, basic metal, the alkaline earth metal oxide etc.Because alkaline earth metal oxide, alkalescence such as sodium hydroxide, hydrated barta etc. is stronger, the methylolation addition reaction speed of phenol and formaldehyde is fast under its katalysis, be rich in methylol in the resultant, and has stronger polarity, water-soluble also better, so the preferred bases soil metal oxide is as basic catalyst.
The polymerization degree of polyvinyl alcohol is preferably 1000 ~ 2000.
The mass percent concentration of formalin is preferably 35% ~ 40%.
The particle diameter of Micron-Sized Copper Powders Coated is preferably 0.5um ~ 2um.
Nano level attapulgite length is preferably 0.5um ~ 5um, and width is preferably 15nm ~ 30nm.
As preferably, the solid content of the water soluble phenol resin solution of described modification is 60 ~ 67%, and the dissolving each other than being 1:1 ~ 1:14 of water.
The Weaving type friction materials of modification of the present invention can obtain by phenolic resin aqueous solution, nano level attapulgite and the Micron-Sized Copper Powders Coated blend with polyvinyl alcohol modification with water-soluble phenol resin solution, as preferably, the preparation method that the present invention adopts may further comprise the steps:
Step 1, with the phenol of 100 mass parts, the basic catalyst of 1 ~ 20 part polyvinyl alcohol and 4 ~ 10 mass parts joins in the reaction vessel, is warming up to 60 ~ 75 ℃, stirring reaction 10 ~ 25 minutes;
Step 2, the formaldehyde solution of 110 ~ 120 mass parts is joined in the reaction vessel, be warming up to 80 ~ 100 ℃, stirring reaction 35 ~ 50 minutes;
Step 3, stopped heating after temperature is reduced to below 50 ℃, join nano level attapulgite and 1 ~ 2 mass parts Micron-Sized Copper Powders Coated particle of 1 ~ 4 mass parts in the reaction vessel, stir 20 ~ 30 minutes;
Step 4, stop to stir, collect reaction soln, place ultrasonic wave diverting device ultra-sonic dispersion even.
Above-mentioned employed phenol purity is preferably more than 98.5%.
Above-mentioned employed polyvinyl alcohol is preferably used water-soluble swollen 4 ~ 10 hours of 5 ~ 10 mass parts before use.
In the above-mentioned steps 4, ultrasonic frequency is preferably 45Hz ~ 100Hz; Temperature preferably is controlled between 30 ℃ ~ 50 ℃ during ultra-sonic dispersion, and the ultra-sonic dispersion time is preferably 60 minutes ~ and 120 minutes.
In sum, the present invention adopts polyvinyl alcohol, nano level attapulgite and the multiple modified water soluble phenol resin of Micron-Sized Copper Powders Coated, has following beneficial effect:
(1) in the water soluble phenol resin building-up process, adds a part of polyvinyl alcohol, form the phenolic resin aqueous solution of polyvinyl alcohol modification, owing to contain a certain amount of hydroxyl on the polyvinyl alcohol molecule chain, improved the solvability of resol in water, and increased the adhesive property of resol as binding agent and fiber etc., the simultaneously hydroxyl of this part and the methylol in resol polycondensation in the process of solidifying forms the toughness that the intrinsic toughening structure has also improved resol effectively; In addition, because the add-on of polyvinyl alcohol is less, less on the thermotolerance impact of resol;
(2) in the phenolic resin aqueous solution of polyvinyl alcohol modification, add nano-attapulgite, because nano-attapulgite can form a large amount of physical crosslinking points with phenolic resin as matrix resin, improved the thermotolerance of resin, also further strengthened its toughness simultaneously; In addition, the nano level attapulgite has stronger absorption property, the small-molecule substance that the friction materials that makes as binding agent with the water soluble phenol resin aqueous solution of this modification in use produces can be adsorbed by the nano level attapulgite, thereby effectively reduced the formed gaseous state of friction surface or liquid film, improved the heat resistanceheat resistant decline performance of resol resin.
(3) Micron-Sized Copper Powders Coated is dispersed in the phenolic resin aqueous solution of polyvinyl alcohol modification, has improved the wear resisting property of resin, further strengthened resin toughness simultaneously.
Therefore, the water soluble phenol resin solution Effective Raise of modification of the present invention the solvability of resol in water, and the cohesiveness of resol, toughness, thermotolerance, anti-character of heat-fading and wear resistance.Water soluble phenol resin solution with modification of the present invention prepares the Weaving type friction materials as binding agent, not only cost is low, environmental pollution is little, and can the Effective Raise fiber and other material and the cohesiveness of slurry, the phenomenon of avoiding slurry to come off from fiber surface, resistance to elevated temperatures and crocking resistance that simultaneously can Effective Raise Weaving type friction materials be effectively avoided the phenomenon that causes frictional coefficient to reduce because of the resin thermolysis.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail, it is pointed out that the following stated embodiment is intended to be convenient to the understanding of the present invention, and it is not played any restriction effect.
Embodiment 1:
In the present embodiment, the water soluble phenol resin solution of modification is comprised of phenolic resin aqueous solution, nano level attapulgite and the Micron-Sized Copper Powders Coated of polyvinyl alcohol modification; According to the mass fraction meter, the phenolic resin aqueous solution of polyvinyl alcohol modification is to be that 37% formalin, the 5 mass parts polymerization degree are 1700 polyvinyl alcohol by the phenol of 100 mass parts, 115 mass parts mass percent concentrations, and the basic catalyst NaOH hybrid reaction of 5 mass parts forms; Be 100 mass fraction meters according to phenol content in the phenolic resin aqueous solution of polyvinyl alcohol modification, contain the long 0.5um ~ 5um that is, wide is nano level attapulgite 2 mass parts of 15nm ~ 30nm, and particle diameter is Micron-Sized Copper Powders Coated 1 mass parts of 0.5um ~ 2um.
The preparation method of the water soluble phenol resin solution of above-mentioned modification comprises the steps:
(1) with 5 mass parts, the polymerization degree is 1700 polyvinyl alcohol, and what add 8 mass parts water-soluble swollenly places reaction vessel with the NaOH of 100 mass parts phenol and 5 mass parts after 5 hours simultaneously, is warming up to 70 ℃, stirring reaction 20 minutes;
(2) formaldehyde solution with 115 mass parts joins in the reaction vessel, is warming up to 92 ℃, stirring reaction 45 minutes;
(3) stopped heating treats that solution temperature is reduced to the nano level attapulgite of adding 2 mass parts in 50 ℃ of backward reaction vessels and the Micron-Sized Copper Powders Coated of 1 mass parts, stirs 20 minutes;
(4) stop to stir after, collect reacted solution and place ultrasonic unit, temperature is controlled at about 40 ℃, ultrasonic wave was disperseed 90 minutes under the 45Hz frequency, obtained the water soluble phenol resin solution of modification.
The solid content of the water soluble phenol resin solution of above-mentioned modification is 62.5%, can be dissolved in the water of 8 times of its quality.The thermal weight loss test result shows, at 5%, 435 ℃ of its thermal weight loss 10% of 342 ℃ of its thermal weight losses.
Water soluble phenol resin solution with above-mentioned modification prepares car clutch face sheet as binding agent, and concrete preparation method is as follows:
Preparation slurry: Modified Water Soluble Phenolic Resin 32 mass parts, barite 13 mass parts, chromite powder 14 mass parts, graphite 4 mass parts, carbon black 5 mass parts, zeolite 6 mass parts, aluminum oxide 2 mass parts, Wingdale 6 mass parts; With continuous blend fiber dipping sizing agent, then twining after 80 minutes 85 ℃ of lower bakings becomes parison; It is hot-forming that parison after twining is put into hot-die, and temperature is 160 ℃, and pressure is 20MPa, 5 minutes press times; Dough sheet after the hot pressing is inserted 180 ℃ of baking ovens, thermal treatment 8 hours, the processing of polishing after the cooling, boring obtains the clutch surface flake products.
In above-mentioned preparation process, blend fiber and slurry bonding firmly the phenomenon that slurry comes off from fiber surface do not occur after the oven dry of slurry impregnation of fibers.
Adopt constant speed formula trier, according to the GB/T5764-2011 standard above-mentioned clutch surface is tested, friction and wear behavior is as shown in table 1 below, this clutch surface stable friction factor of surface, wear rate is low, still have stable frictional coefficient and lower abrasion under 350 ℃ condition, quality product meets relevant national standard fully.
Embodiment 2:
In the present embodiment, the water soluble phenol resin solution of modification is comprised of phenolic resin aqueous solution, nano level attapulgite and the Micron-Sized Copper Powders Coated of polyvinyl alcohol modification; According to the mass fraction meter, the phenolic resin aqueous solution of polyvinyl alcohol modification is to be that 37% formalin, the 6 mass parts polymerization degree are 1750 polyvinyl alcohol by the phenol of 100 mass parts, 118 mass parts mass percent concentrations, and the basic catalyst Ba(OH of 8 mass parts) 2 hybrid reactions form; Be 100 mass fraction meters according to phenol content in the phenolic resin aqueous solution of polyvinyl alcohol modification, contain the long 0.5um ~ 5um that is, wide is nano level attapulgite 1.5 mass parts of 15nm ~ 30nm, and particle diameter is Micron-Sized Copper Powders Coated 2 mass parts of 0.5um ~ 2um.
The preparation method of the water soluble phenol resin solution of above-mentioned modification comprises the steps:
(1) with 6 mass parts, the polymerization degree is 1750 polyvinyl alcohol, add 9 mass parts water-soluble swollen after 5 hours with the Ba(OH of 100 mass parts phenol and 8 mass parts)
2Place simultaneously reaction vessel, be warming up to 65 ℃, stirring reaction 25 minutes;
(2) formaldehyde solution with 118 mass parts joins in the reaction vessel, is warming up to 90 ℃, stirring reaction 50 minutes;
(3) stopped heating treats that solution temperature is reduced to the nano level attapulgite of adding 1.5 mass parts in 50 ℃ of backward reaction vessels and the Micron-Sized Copper Powders Coated of 1 mass parts, stirs 25 minutes;
(4) stop to stir after, collect reacted solution and place ultrasonic unit, temperature is controlled at about 45 ℃, ultrasonic wave was disperseed 100 minutes under the 45Hz frequency, obtained Modified Water Soluble Phenolic Resin.
The solid content of the water soluble phenol resin solution of above-mentioned modification is 60.8%, can be dissolved in the water of 12 times of its quality.The thermal weight loss test result shows, at 5%, 426 ℃ of its thermal weight loss 10% of 322 ℃ of its thermal weight losses.
Water soluble phenol resin solution with above-mentioned modification prepares car clutch face sheet as binding agent, and concrete preparation method is as follows:
Preparation slurry: 30 parts of Modified Water Soluble Phenolic Resin, 14 parts in barite, 15 parts of chromite powders, 6 parts in graphite, 5.5 parts of carbon blacks, 4 parts in zeolite, 2.5 parts in aluminum oxide, 5 parts in Wingdale; With continuous blend fiber dipping sizing agent, then twining after 60 minutes 90 ℃ of lower bakings becomes parison; It is hot-forming that parison after twining is put into hot-die, and temperature is 165 ℃, and pressure is 20MPa, 6 minutes press times; Dough sheet after the hot pressing is inserted 200 ℃ of baking ovens, thermal treatment 6 hours, the processing of polishing after the cooling, boring obtains the clutch surface flake products.
In above-mentioned preparation process, blend fiber and slurry bonding firmly the phenomenon that slurry comes off from fiber surface do not occur after the oven dry of slurry impregnation of fibers.
Adopt constant speed formula trier, according to the GB/T5764-2011 standard above-mentioned clutch surface is tested, friction and wear behavior is as shown in table 1 below, this clutch surface stable friction factor of surface, wear rate is low, still have stable frictional coefficient and lower abrasion under 350 ℃ condition, quality product meets relevant national standard fully.
Embodiment 3:
In the present embodiment, the water soluble phenol resin solution of modification is comprised of phenolic resin aqueous solution, nano level attapulgite and the Micron-Sized Copper Powders Coated of polyvinyl alcohol modification; According to the mass fraction meter, the phenolic resin aqueous solution of polyvinyl alcohol modification is to be that 37% formalin, the 4 mass parts polymerization degree are 1500 polyvinyl alcohol by the phenol of 100 mass parts, 112 mass parts mass percent concentrations, and the basic catalyst NaOH hybrid reaction of 8 mass parts forms; Be 100 mass fraction meters according to phenol content in the phenolic resin aqueous solution of polyvinyl alcohol modification, contain the long 0.5um ~ 5um that is, wide is nano level attapulgite 1 mass parts of 15nm ~ 30nm, and particle diameter is Micron-Sized Copper Powders Coated 1.5 mass parts of 0.5um ~ 2um.
The preparation method of the water soluble phenol resin solution of above-mentioned modification comprises the steps:
(1) with 4 mass parts, the polymerization degree is 1500 polyvinyl alcohol, and what add 8 mass parts water-soluble swollenly places reaction vessel with the NaOH of 100 mass parts phenol and 6 mass parts after 5 hours simultaneously, is warming up to 75 ℃, stirring reaction 25 minutes;
(2) formaldehyde solution with 112 mass parts joins in the reaction vessel, is warming up to 95 ℃, stirring reaction 40 minutes;
(3) stopped heating treats that solution temperature is reduced to the nano level attapulgite of adding 1 mass parts in 50 ℃ of backward reaction vessels and the Micron-Sized Copper Powders Coated of 1.5 mass parts, stirs 30 minutes;
(4) stop to stir after, collect reacted solution and place ultrasonic unit, temperature is controlled at about 35 ℃, ultrasonic wave was disperseed 120 minutes under the 45Hz frequency, obtained Modified Water Soluble Phenolic Resin.
The solid content of the water soluble phenol resin solution of above-mentioned modification is 66.0%, can be dissolved in the water of 7 times of its quality.The thermal weight loss test result shows, at 5%, 446 ℃ of its thermal weight loss 10% of 350 ℃ of its thermal weight losses.
Water soluble phenol resin solution with above-mentioned modification prepares car clutch face sheet as binding agent, and concrete preparation method is as follows:
Preparation slurry: 33 parts of Modified Water Soluble Phenolic Resin, 12 parts in barite, 16 parts of chromite powders, 6 parts in graphite, 5 parts of carbon blacks, 5 parts in zeolite, 2 parts in aluminum oxide, 3 parts in Wingdale; With continuous blend fiber dipping sizing agent, then twining after 90 minutes 85 ℃ of lower bakings becomes parison; It is hot-forming that parison after twining is put into hot-die, and temperature is 160 ℃, and pressure is 25MPa, 6 minutes press times; Dough sheet after the hot pressing is inserted 220 ℃ of baking ovens, thermal treatment 5 hours, the processing of polishing after the cooling, boring obtains the clutch surface flake products.
In above-mentioned preparation process, blend fiber and slurry bonding firmly the phenomenon that slurry comes off from fiber surface do not occur after the oven dry of slurry impregnation of fibers.
Adopt constant speed formula trier, according to the GB/T5764-2011 standard above-mentioned clutch surface is tested, friction and wear behavior is as shown in table 1 below, this clutch surface stable friction factor of surface, wear rate is low, still have stable frictional coefficient and lower abrasion under 350 ℃ condition, quality product meets relevant national standard fully.
Table 1: adopt constant speed formula trier, test the friction and wear behavior table that obtains according to the clutch surface that the GB/T5764-2011 standard prepares above-described embodiment 1-3
Above-described embodiment has been described in detail technical scheme of the present invention; be understood that the above only is specific embodiments of the invention; be not limited to the present invention; all any modifications of in principle scope of the present invention, making, replenish or similar fashion substitutes etc., all should be included within protection scope of the present invention.
Claims (10)
1. water-soluble phenol resin solution of Weaving type friction materials, it is characterized in that: phenolic resin aqueous solution, nano level attapulgite and Micron-Sized Copper Powders Coated by polyvinyl alcohol modification form;
According to the mass fraction meter, the phenolic resin aqueous solution of described polyvinyl alcohol modification is by the formalin of the phenol of 100 mass parts, 110 ~ 120 mass parts, the polyvinyl alcohol of 1 ~ 20 mass parts, and the basic catalyst hybrid reaction of 4 ~ 10 mass parts forms, and wherein the mass percent concentration of formalin is 30% ~ 45%;
Be 100 mass fraction meters according to phenol content in the phenolic resin aqueous solution of polyvinyl alcohol modification, described nano level attapulgite content is 1 ~ 4 mass parts, and Micron-Sized Copper Powders Coated content is 1 ~ 2 mass parts.
2. the water-soluble phenol resin solution of Weaving type friction materials according to claim 1, it is characterized in that: described basic catalyst comprises one or several in ammoniacal liquor, hexamethylenetetramine, yellow soda ash, amine, basic metal, the alkaline earth metal oxide.
3. the water-soluble phenol resin solution of Weaving type friction materials according to claim 1, it is characterized in that: described alkaline earth metal oxide comprises sodium hydroxide or hydrated barta.
4. the water-soluble phenol resin solution of Weaving type friction materials according to claim 1, it is characterized in that: the polymerization degree of described polyvinyl alcohol is 1000 ~ 2000.
5. the water-soluble phenol resin solution of Weaving type friction materials according to claim 1, it is characterized in that: the solid content of described water soluble phenol resin solution is 60% ~ 67%.
6. Weaving type friction materials according to claim 1 is characterized in that: comprise the steps: with the preparation method of water-soluble phenol resin solution
Step 1, with the phenol of 100 mass parts, the basic catalyst of the polyvinyl alcohol of 1 ~ 20 mass parts and 4 ~ 10 mass parts joins in the reaction vessel, is warming up to 60 ~ 75 ℃, stirring reaction 10 ~ 25 minutes;
Step 2, the formaldehyde solution of 110 ~ 120 mass parts is joined in the reaction vessel, be warming up to 80 ~ 100 ℃, stirring reaction 35 ~ 60 minutes;
Step 3, stopped heating after temperature is reduced to below 50 ℃, join nano level attapulgite and 1 ~ 2 mass parts Micron-Sized Copper Powders Coated particle of 1 ~ 4 mass parts in the reaction vessel, stir 20 ~ 30 minutes;
Step 4, stop to stir, collect reaction soln, place ultrasonic wave diverting device ultra-sonic dispersion even.
7. Weaving type friction materials according to claim 1 is with the preparation method of water-soluble phenol resin solution, and it is characterized in that: described phenol purity is more than 98.5%.
8. Weaving type friction materials according to claim 1 is characterized in that with the preparation method of water-soluble phenol resin solution: described polyvinyl alcohol is used water-soluble swollen 4 ~ 10 hours of 5 ~ 10 mass parts before use.
9. Weaving type friction materials according to claim 1 is with the preparation method of water-soluble phenol resin solution, and it is characterized in that: in the described step 4, ultrasonic frequency is 45Hz ~ 100Hz.
10. Weaving type friction materials according to claim 1 is with the preparation method of water-soluble phenol resin solution, and it is characterized in that: in the described step 4, temperature is controlled between 30 ℃ ~ 50 ℃ during ultra-sonic dispersion, and the ultra-sonic dispersion time is 60 minutes ~ 120 minutes.
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| CN106567897A (en) * | 2016-11-13 | 2017-04-19 | 徐州乐泰机电科技有限公司 | Novel composite abrasion resistance brake piece |
| CN107035800A (en) * | 2017-04-21 | 2017-08-11 | 来安县隆华摩擦材料有限公司 | A kind of preparation method of the high heat-resisting car clutch face sheet of high abrasion |
| CN110157146A (en) * | 2019-05-10 | 2019-08-23 | 上海应用技术大学 | A kind of modifying phenolic resin composition and preparation method thereof |
| CN112852360A (en) * | 2021-01-12 | 2021-05-28 | 天津市盛世德新材料科技有限公司 | Nano magnesium hydroxide reinforced phenolic resin adhesive for impregnated paper and preparation method thereof |
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| CN101285512A (en) * | 2008-05-09 | 2008-10-15 | 海盐华强树脂有限公司 | Production method for clutch surface adopting formaldehyde-phenol resin as cementing compound |
| CN101613516A (en) * | 2008-06-26 | 2009-12-30 | 比亚迪股份有限公司 | Be used to prepare the friction material composition and the friction materials of brake facing |
| CN102627927A (en) * | 2012-03-26 | 2012-08-08 | 黑龙江省科学院石油化学研究院 | Medium temperature curing high temperature resistant phenolic adhesive |
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| CN101285512A (en) * | 2008-05-09 | 2008-10-15 | 海盐华强树脂有限公司 | Production method for clutch surface adopting formaldehyde-phenol resin as cementing compound |
| CN101613516A (en) * | 2008-06-26 | 2009-12-30 | 比亚迪股份有限公司 | Be used to prepare the friction material composition and the friction materials of brake facing |
| CN102627927A (en) * | 2012-03-26 | 2012-08-08 | 黑龙江省科学院石油化学研究院 | Medium temperature curing high temperature resistant phenolic adhesive |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567897A (en) * | 2016-11-13 | 2017-04-19 | 徐州乐泰机电科技有限公司 | Novel composite abrasion resistance brake piece |
| CN106567897B (en) * | 2016-11-13 | 2019-04-16 | 青岛方冠摩擦材料有限公司 | A kind of preparation method of NEW TYPE OF COMPOSITE wear brake pad |
| CN107035800A (en) * | 2017-04-21 | 2017-08-11 | 来安县隆华摩擦材料有限公司 | A kind of preparation method of the high heat-resisting car clutch face sheet of high abrasion |
| CN107035800B (en) * | 2017-04-21 | 2020-02-07 | 来安县隆华摩擦材料有限公司 | Preparation method of high-wear-resistance and high-heat-resistance automobile clutch facing |
| CN110157146A (en) * | 2019-05-10 | 2019-08-23 | 上海应用技术大学 | A kind of modifying phenolic resin composition and preparation method thereof |
| CN112852360A (en) * | 2021-01-12 | 2021-05-28 | 天津市盛世德新材料科技有限公司 | Nano magnesium hydroxide reinforced phenolic resin adhesive for impregnated paper and preparation method thereof |
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| CN103030922B (en) | 2014-06-11 |
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Application publication date: 20130410 Assignee: Ningbo fengdongcheng friction material Co.,Ltd. Assignor: NINGBO INSTITUTE OF MATERIALS TECHNOLOGY & ENGINEERING, CHINESE ACADEMY OF SCIENCES Contract record no.: X2023980035512 Denomination of invention: A water-soluble phenolic resin solution for woven friction material and its preparation method Granted publication date: 20140611 License type: Common License Record date: 20230515 |