CN109235119A - A kind of preparation method of enhanced paper friction material - Google Patents
A kind of preparation method of enhanced paper friction material Download PDFInfo
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- CN109235119A CN109235119A CN201811129476.XA CN201811129476A CN109235119A CN 109235119 A CN109235119 A CN 109235119A CN 201811129476 A CN201811129476 A CN 201811129476A CN 109235119 A CN109235119 A CN 109235119A
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- friction material
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- paper friction
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- enhanced paper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/35—Polyalkenes, e.g. polystyrene
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/22—Condensation polymers of aldehydes or ketones
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The present invention relates to a kind of preparation methods of enhanced paper friction material, belong to technical field of function materials.The present invention is using EVA lotion as cohesive body, the mixed and modified fiber of phenolic fibre and mullite fiber is as reinforcement, Lanthanum Stearate is as heat stabilizer, aluminium oxide, which is used as, increases the agent that rubs, prepare the enhanced paper friction material with good friction polishing machine and thermal stability, phenolic fibre and mullite fiber carry out surface by chemical method and are modified, the surface of phenolic fibre and mullite fiber is set to cover one layer of methacrylic acid, it the surface of fiber can be with a certain number of-OH and-COOH, improve the surface-active of fiber, the binding performance of enhancing and resin, reduce the wear rate of paper friction material；Lanthanum Stearate has excellent thermal stability, good weatherability as heat stabilizer；Enhanced paper friction material prepared by the present invention is high with coefficient of friction, wear rate is low, stable friction performance, wearability well has a vast market foreground and application prospect.
Description
Technical field
The present invention relates to a kind of preparation methods of enhanced paper friction material, belong to technical field of function materials.
Background technique
Paper friction material be applied to one of wet clutch and brake key function material, performance it is excellent
The safety of the bad stability for directly affecting transmission device torsion pass and driving.Paper friction material is that a kind of multicomponent is multiple simultaneously
Condensation material is usually made of ten multiple materials.Raw material can be functionally divided into reinforcement, cohesive body, frictional property regulator
With four kinds of filler, the mode for generalling use papermaking is manufactured, so being called " paper base " friction material.
Paper friction material is to be applied to one of wet clutch and brake key function material, performance superiority and inferiority
Directly affect the stability of transmission device torsion pass and the safety of driving.Paper friction material is a kind of multicomponent composite wood
Material, is usually made of ten plurality of raw materials, raw material can be functionally divided into reinforcement, binder, frictional property regulator and filled out
Four kinds of material.
Due to it is better than adjustable, abrasion resistance properties with coefficient of friction height, stable friction performance, static and dynamic friction coefficient,
Many excellent performances such as energy absorption capability height and the wet clutch for being widely used in all kinds of heavy vehicles and engineering machinery
In brake, especially as the friction plate material of wet clutch in automatic gearbox.
It is wet that paper friction material is that one kind is widely used in construction machinery gear box, automatic gearbox of vehicles and motorcycle etc.
The functional material of middle key in formula clutch, is mainly made of fiber, binder, frictional property regulator, filler etc., uses
Paper technology is made.Paper friction material in addition to be applied to wet clutch and brake in, can also differential mechanism be latched from
Clutch, parking brake and the other application for requiring high confficient of static friction.When paper friction material is as automatic transmission friction
The requirement for meeting the performance of friction and wear behavior, thermal stability etc. is generally considered when piece, and if being used in differential mechanism is latched clutch
Device, parking brake etc. require static friction relatively high place, that, which does not just require nothing more than paper friction material, high static friction,
Also there is low wear rate.
But existing paper friction material frictional behaviour is influenced by external load, and variation is big, and resistance to decline long afterwards is big, Bu Nengman
Foot is used for the requirement of existing market.
Summary of the invention
The technical problems to be solved by the invention: existing paper friction material friction and wear behavior, thermal stability are directed to
The problem of difference, provides a kind of preparation method of enhanced paper friction material.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) in mass ratio 1: 1 phenolic fibre and mullite fiber are mixed, is placed in ball-milling treatment in ball mill, fibre must be mixed
Dimension, according to parts by weight, weigh respectively 1~6 part of KH-550,5~10 parts of methacrylic acids, 1~3 part of lauryl sodium sulfate,
KH-550 and deionized water are mixed, are stirred evenly, and adjust pH by 0.2~0.8 part of methyl-silicone oil, 20~30 parts of deionized waters
Value obtains mixed liquor, and methacrylic acid, lauryl sodium sulfate and methyl-silicone oil, heating stirring is added and obtains immersion fluid, by quality
Composite fibre is immersed in immersion fluid than 1: 10, soaking and stirring processing, takes out and dry to get modified composite fibre；
(2) according to parts by weight, 10~20 parts of modified composite fibre, 30~50 parts of EVA lotions, 5~12 parts of oxidations are weighed respectively
Aluminium, 1~5 part of Lanthanum Stearate, 60~80 parts of deionized waters mix modified composite fibre aluminium oxide, Lanthanum Stearate and deionized water
It closes uniformly, obtains slurries, pour into paper former and form, dried at being 80~90 DEG C in temperature to constant weight to get body paper, used
EVA lotion decorative paper, hot-pressing processing, cooled to room temperature is to get enhanced paper friction material.
It is 300~500r/min that ball-milling treatment described in step (1), which is in revolving speed, and ratio of grinding media to material 8: 1, selecting diameter is 8
The agate ball of~10mm, 1~2h of ball milling.
Adjusting pH value described in step (1) be 20% with mass fraction acetic acid solution adjust pH value be 3.5~4.0.
Heating stirring described in step (1) be 60~80 DEG C in temperature at stir 20~30min.
Soaking and stirring processing described in step (1) is that low whipping speed is 500~600r/min, and temperature is at 50~60 DEG C
Stir 2~3h.
It is 5.0~5.8MPa that hot-pressing processing described in step (2), which is in pressure, temperature be hot pressing 10 at 160~180 DEG C~
15min。
The present invention is compared with other methods, and advantageous effects are:
The present invention is using EVA lotion as cohesive body, and the mixed and modified fiber of phenolic fibre and mullite fiber is as reinforcement, firmly
Resin acid lanthanum prepares the increasing with good friction polishing machine and thermal stability as the agent that rubs is increased as heat stabilizer, aluminium oxide
Strong type paper friction material, EVA lotion have permanent flexibility, preferable resistance to acid and alkali, can ultraviolet-resistant aging, have
Good compatibility, good film forming and good cementability；Phenolic fibre have good abrasion resistance, heat resistance and
Self-lubrication, phenolic fibre and mullite fiber carry out surface by chemical method and are modified, and make phenolic fibre and mullite fiber
Surface cover one layer of methacrylic acid, the surface of fiber can improve the surface of fiber with a certain number of-OH and-COOH
Activity, the binding performance of enhancing and resin, reduces the wear rate of paper friction material；Lanthanum Stearate has as heat stabilizer
Excellent thermal stability, good weatherability and storage stability；The hard solid particulate alumina conduct being added in the present invention
Increasing rubs agent, it by with antithesis rub face contact when the ditch dug with a plow effect that generates, binding effect improve friction factor, and aluminium oxide
Increasing effect of rubbing it is good, cheap.
Specific embodiment
In mass ratio 1: 1 mixes phenolic fibre and mullite fiber, is placed in ball mill, revolving speed be 300~
500r/min, ratio of grinding media to material 8: 1, selecting diameter is the agate ball of 8~10mm, and 1~2h of ball milling obtains composite fibre, by weight
Number meter, weighs 1~6 part of KH-550,5~10 parts of methacrylic acids, 1~3 part of lauryl sodium sulfate, 0.2~0.8 part of first respectively
KH-550 and deionized water are mixed, are stirred evenly by base silicone oil, 20~30 parts of deionized waters, and the second for being 20% with mass fraction
It is 3.5~4.0 that acid solution, which adjusts pH value, obtains mixed liquor, and methacrylic acid, lauryl sodium sulfate and methyl-silicone oil is added,
Temperature is that 20~30min is stirred at 60~80 DEG C, obtains immersion fluid, and in mass ratio 1: 10 is immersed in composite fibre in immersion fluid,
Low whipping speed is 500~600r/min, and temperature is that 2~3h is stirred at 50~60 DEG C, takes out and dries and is fine to get modified mixing
Dimension；According to parts by weight, 10~20 parts of modified composite fibre, 30~50 parts of EVA lotions, 5~12 parts of aluminium oxide, 1 are weighed respectively
~5 parts of Lanthanum Stearates, 60~80 parts of deionized waters mix modified composite fibre aluminium oxide, Lanthanum Stearate and deionized water equal
It is even, slurries are obtained, pours into paper former and forms, are dried at being 80~90 DEG C in temperature to constant weight to get body paper, with EVA cream
Liquid decorative paper is 5.0~5.8MPa in pressure, and temperature is 10~15min of hot pressing at 160~180 DEG C, naturally cools to room
Temperature is to get enhanced paper friction material.
In mass ratio 1: 1 mixes phenolic fibre and mullite fiber, is placed in ball mill, is 300r/ in revolving speed
Min, ratio of grinding media to material 8: 1, selecting diameter is the agate ball of 8mm, and ball milling 1h obtains composite fibre, according to parts by weight, weighs respectively
1 part of KH-550,5 parts of methacrylic acids, 1 part of lauryl sodium sulfate, 0.2 part of methyl-silicone oil, 20 parts of deionized waters, by KH-550
It mixes, stirs evenly with deionized water, and it is 3.5 that the acetic acid solution for being 20% with mass fraction, which adjusts pH value, obtains mixed liquor, adds
Enter methacrylic acid, lauryl sodium sulfate and methyl-silicone oil, stirs 20min at being 60 DEG C in temperature, immersion fluid is obtained, by quality
Composite fibre is immersed in immersion fluid than 1: 10, low whipping speed 500r/min, temperature is that 2h is stirred at 50 DEG C, is taken out simultaneously
Drying is to get modified composite fibre；According to parts by weight, 10 parts of modified composite fibre, 30 parts of EVA lotions, 5 parts of oxygen are weighed respectively
Change aluminium, 1 part of Lanthanum Stearate, 60 parts of deionized waters, modified composite fibre aluminium oxide, Lanthanum Stearate and deionized water is mixed equal
It is even, slurries are obtained, pours into paper former and forms, is dried at being 80 DEG C in temperature to constant weight to get body paper, is soaked with EVA lotion
Stain body paper is 5.0MPa in pressure, and temperature is hot pressing 10min at 160 DEG C, and cooled to room temperature is rubbed to get enhanced paper base
Wipe material.
In mass ratio 1: 1 mixes phenolic fibre and mullite fiber, is placed in ball mill, is 400r/ in revolving speed
Min, ratio of grinding media to material 8: 1, selecting diameter is the agate ball of 9mm, and ball milling 1.5h obtains composite fibre, according to parts by weight, claims respectively
3 parts of KH-550,7 parts of methacrylic acids, 2 parts of lauryl sodium sulfate, 0.5 part of methyl-silicone oil, 25 parts of deionized waters are taken, by KH-
550 and deionized water mixing, stir evenly, and be 20% with mass fraction acetic acid solution adjust pH value be 3.7, obtain mixed liquor,
Methacrylic acid, lauryl sodium sulfate and methyl-silicone oil is added, stirs 25min at being 70 DEG C in temperature, immersion fluid is obtained, by matter
Composite fibre is immersed in immersion fluid by amount than 1: 10, low whipping speed 550r/min, and temperature is to stir 2.5h at 55 DEG C, is taken
Out and dry to get modified composite fibre；According to parts by weight, 15 parts of modified composite fibre, 40 parts of EVA lotions, 8 are weighed respectively
Part aluminium oxide, 3 parts of Lanthanum Stearates, 70 parts of deionized waters mix modified composite fibre aluminium oxide, Lanthanum Stearate and deionized water
Uniformly, slurries are obtained, pours into paper former and forms, are dried to constant weight at being 85 DEG C in temperature to get body paper, with EVA lotion
Decorative paper is 5.4MPa in pressure, and temperature is hot pressing 13min at 170 DEG C, and cooled to room temperature is to get enhanced paper base
Friction material.
In mass ratio 1: 1 mixes phenolic fibre and mullite fiber, is placed in ball mill, is 500r/ in revolving speed
Min, ratio of grinding media to material 8: 1, selecting diameter is the agate ball of 10mm, and ball milling 2h obtains composite fibre, according to parts by weight, claims respectively
6 parts of KH-550,10 parts of methacrylic acids, 3 parts of lauryl sodium sulfate, 0.8 part of methyl-silicone oil, 30 parts of deionized waters are taken, by KH-
550 and deionized water mixing, stir evenly, and be 20% with mass fraction acetic acid solution adjust pH value be 4.0, obtain mixed liquor,
Methacrylic acid, lauryl sodium sulfate and methyl-silicone oil is added, stirs 30min at being 80 DEG C in temperature, immersion fluid is obtained, by matter
Composite fibre is immersed in immersion fluid by amount than 1: 10, low whipping speed 600r/min, and temperature is to stir 3h at 60 DEG C, is taken out
And it dries to get modified composite fibre；According to parts by weight, 20 parts of modified composite fibre, 50 parts of EVA lotions, 12 are weighed respectively
Part aluminium oxide, 5 parts of Lanthanum Stearates, 80 parts of deionized waters mix modified composite fibre aluminium oxide, Lanthanum Stearate and deionized water
Uniformly, slurries are obtained, pours into paper former and forms, are dried to constant weight at being 90 DEG C in temperature to get body paper, with EVA lotion
Decorative paper is 5.8MPa in pressure, and temperature is hot pressing 15min at 180 DEG C, and cooled to room temperature is to get enhanced paper base
Friction material.
Enhanced paper friction material prepared by the present invention is subjected to performance detection, specific testing result such as following table table 1:
Detection method:
By QM1000-II type wet type inertia frictional property test machine main shaft inertia be 0.1kgm2, it is apparent than pressure be 0.25
Under the conditions of~1.5MPa, revolving speed are 2000r/min, the dynamic friction coefficient of the enhanced paper friction material of preparation is tested；
The enhanced paper friction material performance characterization of table 1
Enhanced paper friction material prepared by the present invention is high with coefficient of friction as shown in Table 1, wear rate is low, frictional behaviour is steady
Determine, wearability well has a vast market foreground and application prospect.
Claims (6)
1. a kind of preparation method of enhanced paper friction material, it is characterised in that specific preparation step are as follows:
(1) in mass ratio 1: 1 phenolic fibre and mullite fiber are mixed, is placed in ball-milling treatment in ball mill, fibre must be mixed
Dimension, according to parts by weight, weigh respectively 1~6 part of KH-550,5~10 parts of methacrylic acids, 1~3 part of lauryl sodium sulfate,
KH-550 and deionized water are mixed, are stirred evenly, and adjust pH by 0.2~0.8 part of methyl-silicone oil, 20~30 parts of deionized waters
Value obtains mixed liquor, and methacrylic acid, lauryl sodium sulfate and methyl-silicone oil, heating stirring is added and obtains immersion fluid, by quality
Composite fibre is immersed in immersion fluid than 1: 10, soaking and stirring processing, takes out and dry to get modified composite fibre；
(2) according to parts by weight, 10~20 parts of modified composite fibre, 30~50 parts of EVA lotions, 5~12 parts of oxidations are weighed respectively
Aluminium, 1~5 part of Lanthanum Stearate, 60~80 parts of deionized waters mix modified composite fibre aluminium oxide, Lanthanum Stearate and deionized water
It closes uniformly, obtains slurries, pour into paper former and form, dried at being 80~90 DEG C in temperature to constant weight to get body paper, used
EVA lotion decorative paper, hot-pressing processing, cooled to room temperature is to get enhanced paper friction material.
2. a kind of preparation method of enhanced paper friction material according to claim 1, it is characterised in that: step
(1) it is 300~500r/min that the ball-milling treatment described in, which is in revolving speed, and ratio of grinding media to material 8: 1, selecting diameter is the agate of 8~10mm
Ball, 1~2h of ball milling.
3. a kind of preparation method of enhanced paper friction material according to claim 1, it is characterised in that: step
(1) the adjusting pH value described in be 20% with mass fraction acetic acid solution adjust pH value be 3.5~4.0.
4. a kind of preparation method of enhanced paper friction material according to claim 1, it is characterised in that: step
(1) heating stirring described in be 60~80 DEG C in temperature at stir 20~30min.
5. a kind of preparation method of enhanced paper friction material according to claim 1, it is characterised in that: step
(1) soaking and stirring processing described in is that low whipping speed is 500~600r/min, and temperature is that 2~3h is stirred at 50~60 DEG C.
6. a kind of preparation method of enhanced paper friction material according to claim 1, it is characterised in that: step
(2) it is 5.0~5.8MPa that the hot-pressing processing described in, which is in pressure, and temperature is 10~15min of hot pressing at 160~180 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445360A (en) * | 2021-06-25 | 2021-09-28 | 西北工业大学 | Rigid-flexible ZIF-8/dopamine cooperative enhancement type paper-based friction material and preparation method thereof |
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| CN101024760A (en) * | 2007-02-14 | 2007-08-29 | 西北工业大学 | Flexible-paper-base friction material |
| CN104531070A (en) * | 2014-12-29 | 2015-04-22 | 西北工业大学 | Softwood particle blending and modified rubber based friction material as well as preparation method and using method thereof |
| CN105155334A (en) * | 2015-07-22 | 2015-12-16 | 黄山奔马集团有限公司 | Paper-based frictional material for self-adaptive automatic transmission and manufacturing method for paper-based frictional material |
| CN105951505A (en) * | 2016-06-22 | 2016-09-21 | 陕西科技大学 | Preparation method of methacrylic acid non-destructively modified carbon fiber reinforced wet-type friction material |
| CN106544924A (en) * | 2016-11-23 | 2017-03-29 | 陕西科技大学 | A kind of alumina fibre strengthens the preparation method of paper friction material |
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2018
- 2018-09-27 CN CN201811129476.XA patent/CN109235119A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024760A (en) * | 2007-02-14 | 2007-08-29 | 西北工业大学 | Flexible-paper-base friction material |
| CN104531070A (en) * | 2014-12-29 | 2015-04-22 | 西北工业大学 | Softwood particle blending and modified rubber based friction material as well as preparation method and using method thereof |
| CN105155334A (en) * | 2015-07-22 | 2015-12-16 | 黄山奔马集团有限公司 | Paper-based frictional material for self-adaptive automatic transmission and manufacturing method for paper-based frictional material |
| CN105951505A (en) * | 2016-06-22 | 2016-09-21 | 陕西科技大学 | Preparation method of methacrylic acid non-destructively modified carbon fiber reinforced wet-type friction material |
| CN106544924A (en) * | 2016-11-23 | 2017-03-29 | 陕西科技大学 | A kind of alumina fibre strengthens the preparation method of paper friction material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445360A (en) * | 2021-06-25 | 2021-09-28 | 西北工业大学 | Rigid-flexible ZIF-8/dopamine cooperative enhancement type paper-based friction material and preparation method thereof |
| CN113445360B (en) * | 2021-06-25 | 2023-06-30 | 西北工业大学 | Rigid-flexible ZIF-8/dopamine synergistic enhanced paper-based friction material and preparation method thereof |
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Application publication date: 20190118 |