CN108017900A - A kind of hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer material and its preparation method and application - Google Patents
A kind of hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer material and its preparation method and application Download PDFInfo
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- CN108017900A CN108017900A CN201711406172.9A CN201711406172A CN108017900A CN 108017900 A CN108017900 A CN 108017900A CN 201711406172 A CN201711406172 A CN 201711406172A CN 108017900 A CN108017900 A CN 108017900A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/223—Packed additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
- C08J2475/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
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Abstract
The invention belongs to polymer chemistry and polymer arts, disclose a kind of hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer material and its preparation method and application.The material is mainly made by following raw material according to the mass fraction：10~30 parts of 100 parts of thermoplastic polyurethane elastomer resin and self-lubricating thermoplastic polyurethane elastomer master batch；Self-lubricating thermoplastic polyurethane elastomer master batch is prepared by 100 mass parts of thermoplastic polyurethane elastomer resin and 10~100 mass parts of self-lubricant anti-friction auxiliary agent.Thermoplastic polyurethane elastomer material provided by the invention has the function of self-lubricating, and self-lubricating auxiliary agent is free of inorganic filler, while Thermoplastic polyurethane elastomer material friction coefficient is reduced, influences very little to abrasion.Also, Thermoplastic polyurethane elastomer material provided by the invention has the function that continuous lubrication, during thermoplastic polyurethane material's use, self-lubricating auxiliary agent can separate out automatically, realize the function of self-lubricating.
Description
Technical field
The invention belongs to polymer chemistry and polymer arts, self-lubricating thermoplastic is used in more particularly to a kind of hydropneumatic sealing
Property polyurethane elastomer material and its preparation method and application.
Background technology
Thermoplastic polyurethane elastomer material has the spy of small intensity height, buckling, temperature tolerance and medium better tolerance
Point, is widely used in hydropneumatic field of sealing technology, is the ideal material for manufacturing hydropneumatic seal.Thermoplastic polyurethane material
Although excelling in abrasion resistance, frictional heat can accelerated material aging, shortening product service life, influence sealing effect.Cause
This, the friction coefficient for reducing production hydraulic pneumatic seal Thermoplastic polyurethane elastomer material is very necessary.In order to reduce liquid
Calm the anger and employ the friction coefficient of Thermoplastic polyurethane elastomer material, common method is added into polyurethane elastomer material
The inorganic anti-attrition lubricating auxiliary agent such as graphite, abrasion resistant carbon black, molybdenum disulfide, these inorganic anti-attrition lubricating auxiliary agents and thermoplastic poly
Urethane elastomer resin phase poor compatibility.By the seal of above-mentioned material manufacture in use, anti-attrition layer can be caused largely to take off
Fall, cause seal leakage and driving medium pollution.The processing method that inorganic anti-attrition auxiliary agent adds thermoplastic polyurethane elastomer leads to
Often it is double screw extruder, under twin-screw shear action, the hydraulic performance decline of Thermoplastic polyurethane elastomer material, influences product
The reliability of service life and product.
Publication number CN 105001626A disclose " a kind of extrusion grade thermoplastic polyurethane elastomer and preparation method thereof ",
Including 30~45 parts of polyether Glycols, 50~70 parts of isocyanate mixture, 5~8.75 parts of chain extender, organic-silicon-modified propylene
0.1~0.5 part of 5~10 parts of acid resin and catalyst.Its there are the shortcomings that and with the present invention difference in invention below
Rong Zhongyou is discussed in detail.
Publication number CN 106715503A disclose " self-lubricating polymer composition ", it includes diisocyanate with comprising
The reactant of the diol mixture of short chain glycol, long-chain polyether or polyester-diol and lubricant, lubricant are non-silicone
Glycol, siloxane glycol or fluorinated lubricant, mainly realize self-lubricating function by reactable lubricant therein, it is lacked
Point is exactly to add lubricant during the reaction can greatly destroy the secondary structure of polyurethane elastomer, and physical property declines tight
Weight, its result of the test also surface this point, add 5% PDMA, tensile strength drops to 2650psi from 5887psi.
Publication number CN 102015897A are disclosed " thermoplastic polyurethane composite ", including thermoplastic polyurethane (TPU),
A kind of polysiloxanes, a kind of acetal polymer and a kind of acrylonitrile-butadiene-styrene (ABS) (ABS) copolymer.Machine is squeezed by screw rod
Mechanical blending, under the Strong shear power effect of screw extruder, although realizing the reduction of friction coefficient and abrasion, material
Expect that performance degradation is serious, seriously restrict performance.
101724253 A of publication number CN are disclosed " a kind of thermoplastic polyurethane and its preparation method and application ", including heat
The blendings such as plastic polyurethane, ultra-high molecular weight polyethylene, surface lubricant, phase solvent and stabilizer obtain.Super high molecular weight
Polyethylene and surface lubricant synergistic effect, realize the reduction of TPU friction coefficient jointly, but twin-screw mechanical blending can be very big
Reduction TPU materials physical property.
Three of the above invention represents the two ways for reducing TPU friction coefficient and abrasion, is that chemical copolymerization is modified respectively
With physical mechanical blending and modifying, the two is really effective in the modification for reducing friction coefficient and abrasion, but shortcoming is also very bright
Aobvious, chemical modification can destroy the regularity of secondary structure and strand, reduce performance, and physical mechanical blending and modifying is in Strong shear
Under power effect, strand is cut, hydraulic performance decline.
The content of the invention
In order to overcome above-mentioned shortcoming and deficiency of the prior art, primary and foremost purpose of the invention is to provide a kind of hydraulic air
Dynamic sealing self-lubricating thermoplastic polyurethane elastomer material；The material includes thermoplastic polyurethane elastomer resin and self-lubricating
Thermoplastic polyurethane elastomer master batch.
Another object of the present invention is to provide a kind of above-mentioned hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer
The preparation method of material；Thermoplastic polyurethane elastomer resin is mixed with self-lubricating thermoplastic polyurethane elastomer master batch by plastics
Color machine mechanical mixture is formed；Self-lubricating thermoplastic polyurethane elastomer master batch is by self-lubricant anti-friction auxiliary agent and thermoplastic polyurethane bullet
Property body resin is blended to be formed by mixer mixing.
Still a further object of the present invention is to provide a kind of above-mentioned hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer
The application of material.
The purpose of the present invention is realized by following proposal：
Self-lubricating thermoplastic polyurethane elastomer material is used in a kind of hydropneumatic sealing, and the material mainly by pressing quality below
The raw material of number meter is made：
100 parts of thermoplastic polyurethane elastomer resin
10~30 parts of self-lubricating thermoplastic polyurethane elastomer master batch.
The thermoplastic polyurethane elastomer resin is Polyether-type thermoplastic polyurethane elastomer resin, polyester-type thermoplastic
Property polyurethane elastomer resins, polycaprolactone type thermoplastic polyurethane elastomer resin, polycarbonate type thermoplastic polyurethane bullet
At least one of property body resin.
The self-lubricating thermoplastic polyurethane elastomer master batch is made by following raw material according to the mass fraction：
100 parts of thermoplastic polyurethane elastomer resin
10~100 parts of self-lubricant anti-friction auxiliary agent.
The thermoplastic polyurethane elastomer resin is Polyether-type thermoplastic polyurethane elastomer resin, polyester-type thermoplastic
Property polyurethane elastomer resins, polycaprolactone type thermoplastic polyurethane elastomer resin, polycarbonate type thermoplastic polyurethane bullet
At least one of property body resin.
The self-lubricant anti-friction auxiliary agent is made by following raw material according to the mass fraction：
100 parts of organic siliconresin
0.1~1 part of diisocyanate.
The relative molecular mass 100,000~1,000,000 of the organic siliconresin.Diisocyanate and macromolecule
The hydroxyl-OH of organic siliconresin when being reacted, after one-NCO group has been reacted, another unreacted-NCO group
Reactivity reduces inerting, forms side shoot chain and contains-the organic siliconresin of NCO group.
The diisocyanate is 4,4 '-methyl diphenylene diisocyanate (4,4 '-MDI), paraphenylene diisocyanate
(PPDI), at least one of 1,5- naphthalene diisocyanates (NDI), 2,4- toluene di-isocyanate(TDI)s (2,4-TDI).
The self-lubricant anti-friction auxiliary agent is prepared according to following steps：
A) 100 parts by weight organic siliconresins are weighed, 80~100 DEG C are heated in reaction kettle, 10 minutes is kept the temperature, is melted
The organic siliconresin melted；
B) 0.1~1 parts by weight diisocyanate is weighed, is added directly into the reaction kettle of the organic siliconresin containing melting
In, 800~1500 revs/min of mixing speed is controlled, controls 80~100 DEG C of temperature, is reacted 30 minutes, is obtained self-lubricant anti-friction and help
Agent.
A kind of preparation method of above-mentioned hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer material, comprising with
Lower specific steps：
A) 100 parts per weight of thermoplastic's polyurethane elastomer resins of weighing, mixing 2 minutes in 140~180 DEG C of mixers,
The polyurethane elastomer resins melted；
B) 10~100 parts by weight self-lubricant anti-friction auxiliary agents are added in the thermoplastic polyurethane elastomer resin of melting, after
Continuous mixing 5 minutes, then discharges, cools down, is broken, obtaining self-lubricating thermoplastic polyurethane elastomer master batch；
C) 100 parts per weight of thermoplastic's polyurethane elastomer resins are weighed, 10~30 parts by weight step b) is added and derives from profit
Sliding thermoplastic polyurethane elastomer master batch, is uniformly mixed, obtains hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer
Material.
A kind of above-mentioned hydropneumatic sealing is with self-lubricating thermoplastic polyurethane elastomer material in manufacture hydraulic pressure and pneumatic
Application in seal product.
Compared with the patent application of Publication No. CN 105001626A, the present invention mixes polyether Glycols and catalyst,
Form mixture A；It will be mixed again after isocyanate mixture and chain extender melting with mixture A, then pass through twin-screw extrusion
Machine is granulated, then carries out post curing process, and thermoplastic polyurethane elastomer is prepared.The thermoplastic polyurethane being prepared
Elastomer has good mechanical property, its tensile strength can reach more than 52MPa, and elongation reaches more than 775%.It is led
It is to substitute polyether Glycols by organosilicon modified crylic acid resin part to want technical characterstic, to lift the tensile strength of the TPU
And elongation.Twin screw extrusion is substantially a step of synthetic polymer, and this method is synthesized in continuity method in TPU
Relatively common, if being used for process, the physical performance of TPU can degradation.
The present invention is had the following advantages and beneficial effect relative to the prior art：Thermoplastic poly ammonia provided by the invention
Ester elastomer material has the function of self-lubricating, and self-lubricating auxiliary agent is free of inorganic filler, is reducing thermoplastic polyurethane elastomer
Very little is influenced on abrasion while material friction coefficient；Also, polyurethane elastomer material provided by the invention has lasting profit
Sliding effect, during thermoplastic polyurethane material's use, self-lubricating auxiliary agent can separate out automatically, play the work of lasting self-lubricating
With.
Brief description of the drawings
Fig. 1 is production process flow chart of the present invention.
Embodiment
With reference to embodiment and attached drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.
Embodiment 1：A kind of hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer material and preparation method thereof, institute
The production procedure of self-lubricating thermoplastic polyurethane elastomer material is stated as shown in Figure 1, carrying out following step successively：
First, 1000g organic siliconresins (relative molecular mass 100,000~200,000) are weighed and adds reaction kettle, in 80
DEG C preheating 10 minutes, adds 1g 4,4 '-MDI, controls 800 revs/min of rotating speed, 80 DEG C of temperature control reacts 30 minutes, obtains self-lubricating
Anti-attrition auxiliary agent；Then, 1000g polycaprolactone type thermoplastic polyurethane elastomer resins, the mixing 2 in 150 DEG C of mixers are weighed
Minute；Then, self-lubricant anti-friction auxiliary agent 100g is added, continues mixing 5 minutes；Subsequently discharge, cool down, is broken, obtaining moistening certainly
Sliding thermoplastic polyurethane elastomer master batch；Finally, 1000g polycaprolactones type thermoplastic polyurethane elastomer resin and 100g are weighed
Self-lubricating thermoplastic polyurethane elastomer master batch, is uniformly mixed, obtains a kind of poly- ammonia of hydropneumatic sealing self-lubricating thermoplastic
Ester elastomer material.
Obtained Thermoplastic polyurethane elastomer material has a preferable mechanical property, the dynamic friction under DRY SLIDING
Coefficient, which is significantly lower than, does not add the Thermoplastic polyurethane elastomer material of organosilicon, the coefficient of kinetic friction under hydraulic pressure Oil Lubrication Condition
Less than organic silicone-modified Thermoplastic polyurethane elastomer material is not added, the addition of organic siliconresin can be reduced substantially
The friction coefficient of thermoplastic polyurethane elastomer.Self-lubricating auxiliary agent is free of inorganic filler, is reducing thermoplastic polyurethane elastomer
Very little is influenced on abrasion while material friction coefficient.Under the polyurethane elastomer material DRY SLIDING that organic siliconresin is modified
The coefficient of kinetic friction approached with the coefficient of kinetic friction under hydraulic pressure Oil Lubrication Condition, there is continuous lubrication, in thermoplastic poly
During urethane materials'use, self-lubricating auxiliary agent can separate out automatically, play the role of lasting self-lubricating.
Embodiment 2：A kind of hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer material and preparation method thereof, institute
The production procedure of self-lubricating thermoplastic polyurethane elastomer material is stated as shown in Figure 1, carrying out following step successively：
First, 1000g organic siliconresins (relative molecular mass 450,000~550,000) are weighed and adds reaction kettle, in 90
DEG C preheating 10 minutes, adds 1g 4,4 '-MDI, controls 1000 revs/min of rotating speed, and 90 DEG C of temperature control reacts 30 minutes, obtains from moistening
Sliding anti-attrition auxiliary agent；Then, 1000g polycaprolactone type thermoplastic polyurethane elastomer resins, the mixing in 150 DEG C of mixers are weighed
2 minutes；Then, self-lubricant anti-friction auxiliary agent 550g is added, continues mixing 5 minutes；Subsequently discharge, cool down, is broken, obtaining moistening certainly
Sliding thermoplastic polyurethane elastomer master batch；Finally, 1000g polycaprolactones type thermoplastic polyurethane elastomer resin and 200g are weighed
Self-lubricating thermoplastic polyurethane elastomer master batch, is uniformly mixed, obtains a kind of poly- ammonia of hydropneumatic sealing self-lubricating thermoplastic
Ester elastomer material.
Obtained Thermoplastic polyurethane elastomer material has a preferable mechanical property, the dynamic friction under DRY SLIDING
Coefficient, which is significantly lower than, does not add the Thermoplastic polyurethane elastomer material of organosilicon, the coefficient of kinetic friction under hydraulic pressure Oil Lubrication Condition
Less than organic silicone-modified Thermoplastic polyurethane elastomer material is not added, the addition of organic siliconresin can be reduced substantially
The friction coefficient of thermoplastic polyurethane elastomer.Self-lubricating auxiliary agent is free of inorganic filler, is reducing thermoplastic polyurethane elastomer
Very little is influenced on abrasion while material friction coefficient.Under the polyurethane elastomer material DRY SLIDING that organic siliconresin is modified
The coefficient of kinetic friction approached with the coefficient of kinetic friction under hydraulic pressure Oil Lubrication Condition, there is continuous lubrication, in thermoplastic poly
During urethane materials'use, self-lubricating auxiliary agent can separate out automatically, play the role of lasting self-lubricating.
Embodiment 3：A kind of hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer material and preparation method thereof, institute
The production procedure of self-lubricating thermoplastic polyurethane elastomer material is stated as shown in Figure 1, carrying out following step successively：
First, 1000g organic siliconresins (relative molecular mass 800,000~1,000,000) are weighed and adds reaction kettle, in
100 DEG C preheat 10 minutes, add 10g 4,4 '-MDI, control 1500 revs/min of rotating speed, and 100 DEG C of temperature control reacts 30 minutes；So
Afterwards, 1000g polycaprolactone type thermoplastic polyurethane elastomer resins, mixing 2 minutes in 150 DEG C of mixers are weighed；Then, add
Enter self-lubricant anti-friction auxiliary agent 1000g, continue mixing 5 minutes；Subsequently discharge, cool down, is broken, obtaining the poly- ammonia of self-lubricating thermoplastic
Ester elastomer master batch；Finally, 1000g polycaprolactones type thermoplastic polyurethane elastomer resin and 300g self-lubricating thermoplastics are weighed
Polyurethane elastomer master batch, is uniformly mixed, obtains a kind of hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer material.
Obtained Thermoplastic polyurethane elastomer material has a preferable mechanical property, the dynamic friction under DRY SLIDING
Coefficient, which is significantly lower than, does not add the Thermoplastic polyurethane elastomer material of organosilicon, the coefficient of kinetic friction under hydraulic pressure Oil Lubrication Condition
Less than organic silicone-modified Thermoplastic polyurethane elastomer material is not added, the addition of organic siliconresin can be reduced substantially
The friction coefficient of thermoplastic polyurethane elastomer.Self-lubricating auxiliary agent is free of inorganic filler, is reducing thermoplastic polyurethane elastomer
Very little is influenced on abrasion while material friction coefficient.Under the polyurethane elastomer material DRY SLIDING that organic siliconresin is modified
The coefficient of kinetic friction approached with the coefficient of kinetic friction under hydraulic pressure Oil Lubrication Condition, there is continuous lubrication, in thermoplastic poly
During urethane materials'use, self-lubricating auxiliary agent can separate out automatically, play the role of lasting self-lubricating.
Comparative example 4：1000g polycaprolactone type thermoplastic polyurethane elastomer is weighed, when heated-air drying 16 is small at 80 DEG C.
It is molded machine-shaping at 190~210 DEG C, when 100 DEG C of post processings 16 are small, in vacuum drying chamber, places 7 days at room temperature, then
Tested.
Comparative example 5：First, 1000g organic siliconresins (relative molecular mass 100,000~200,000) are weighed to add instead
Kettle to be answered, is preheated 10 minutes in 80 DEG C, adds 1g 4,4 '-MDI, controls 800 revs/min of rotating speed, 80 DEG C of temperature control reacts 30 minutes,
Obtain self-lubricant anti-friction auxiliary agent；Then, 1000g polycaprolactone type thermoplastic polyurethane elastomer resins are weighed, add organosilicon
Resin 100g, is uniformly dispersed by dispersion machine.Granulation is directly extruded by double screw extruder, continues mixing 5 minutes；Subsequently
Discharging, cooling, crush, and obtains thermoplastic polyurethane elastomer master batch；Finally, 1000g thermoplastic polyurethane elastomer trees are weighed
Fat and 100g thermoplastic polyurethane elastomer master batches, are uniformly mixed, obtain a kind of hydropneumatic sealing and gathered with self-lubricating thermoplastic
Urethane elastomeric material.
The polyurethane elastomer material that the anti-attrition master batch prepared by double-screw extruding pelletizing method is modified and 1 phase of embodiment
Than, 100% stretching strength, tensile strength and elongation at break decline, and dry friction is identical with hydraulic pressure oil medium lubrication friction coefficient,
Akron abrasion increase；Compared with Example 1, density, 100% stretching strength, tensile strength and elongation at break decline, unlubricated friction
Wipe and hydraulic pressure oil medium lubrication friction coefficient declines, Akron abrasion increase.
Comparative example 6：First, 1000g organic siliconresins (relative molecular mass 100,000~200,000) are weighed to add instead
Kettle to be answered, is preheated 10 minutes in 80 DEG C, adds 1g 4,4 '-MDI, controls 800 revs/min of rotating speed, 80 DEG C of temperature control reacts 30 minutes,
Obtain self-lubricant anti-friction auxiliary agent；Then, 1090.9g polycaprolactone type thermoplastic polyurethane elastomer resins are weighed, are added from profit
Sliding anti-attrition auxiliary agent 9.1g, is uniformly dispersed by dispersion machine.Granulation is directly extruded by double screw extruder, obtains a kind of thermoplasticity
Polyurethane elastomer material.
The polyurethane elastomer material prepared through double-screw extruding pelletizing method by organic siliconresin and polyurethane elastomer with
Embodiment 1 is compared, and 100% stretching strength, tensile strength and elongation at break decline, dry friction and hydraulic pressure oil medium lubrication friction
Coefficient is identical, Akron abrasion increase；With to comparative example 4, under density, 100% stretching strength, tensile strength and elongation at break
Drop, dry friction and hydraulic pressure oil medium lubrication friction coefficient decline, Akron abrasion increase.
Comparative example 7：First, 1000g organic siliconresins (relative molecular mass 100,000~200,000) are weighed to add instead
Kettle to be answered, is preheated 10 minutes in 80 DEG C, adds 1g 4,4 '-MDI, controls 800 revs/min of rotating speed, 80 DEG C of temperature control reacts 30 minutes,
Obtain self-lubricant anti-friction auxiliary agent；1090.9g polycaprolactone type thermoplastic polyurethane elastomer resins are weighed, add self-lubricant anti-friction
Auxiliary agent 9.1g, is uniformly dispersed by dispersion machine, obtains a kind of Thermoplastic polyurethane elastomer material, is directly molded by injection molding machine
Shaping.
By organic siliconresin and polyurethane elastomer through mechanical blending, obtained polyurethane elastomer sample is then directly molded
Compared with Example 1,100% stretching strength, tensile strength and elongation at break decline product, dry friction and hydraulic pressure oil medium lubrication
Friction coefficient is identical, Akron abrasion increase.
Comparative example 8：First, 1000g polycaprolactone type thermoplastic polyurethane elastomer resins are weighed, in 150 DEG C of mixers
Middle mixing 2 minutes；Then, polytetrafluoroethylene (PTFE) (PTFE) micro mist 100g is added, continues mixing 5 minutes；Subsequently discharge, cool down,
It is broken, obtain thermoplastic polyurethane elastomer master batch；Finally, 1000g polycaprolactone type thermoplastic polyurethane elastomer trees are weighed
Fat and 1000g thermoplastic polyurethane elastomer master batches, are uniformly mixed, obtain a kind of Thermoplastic polyurethane elastomer material.
As the Thermoplastic polyurethane elastomer material obtained by PTFE micro mist self-lubricating additive modifications compared with comparative example 4,
Mechanical property is poor, and the friction coefficient under DRY SLIDING reduces, and the friction coefficient under hydraulic pressure Oil Lubrication Condition is equal, Akron
Abrasion increase；Compared with Example 1, the coefficient of kinetic friction increase under DRY SLIDING and under hydraulic pressure Oil Lubrication Condition, abrasion increase
Add；Friction coefficient under DRY SLIDING is far above the coefficient of kinetic friction under hydraulic pressure Oil Lubrication Condition, does not possess self-lubricating function,
It can increase abrasion loss while friction coefficient is reduced.
Comparative example 9：First, 1000g polycaprolactone type thermoplastic polyurethane elastomer resins are weighed, in 150 DEG C of mixers
Middle mixing 2 minutes；Then, molybdenum disulfide (MoS is added2) 550g, continue mixing 5 minutes；Subsequently discharge, cool down, is broken, obtaining
To thermoplastic polyurethane elastomer master batch；Finally, 1000g polycaprolactones type thermoplastic polyurethane elastomer resin and 200g are weighed
Thermoplastic polyurethane elastomer master batch, is uniformly mixed, obtains a kind of Thermoplastic polyurethane elastomer material.
By MoS2Thermoplastic polyurethane elastomer material obtained by self-lubricating additive modification is compared with comparative example 4, mechanics
Poor-performing, the friction coefficient under DRY SLIDING reduce, and the friction coefficient under hydraulic pressure Oil Lubrication Condition is equal, Akron abrasion
Increase；Compared with Example 2, the coefficient of kinetic friction increase under DRY SLIDING and under hydraulic pressure Oil Lubrication Condition, abrasion increase；It is dry
Friction coefficient under friction condition is far above the coefficient of kinetic friction under hydraulic pressure Oil Lubrication Condition, does not possess self-lubricating function, is dropping
Abrasion loss can be increased while low-friction coefficient.
Comparative example 10：First, 1000g polycaprolactone type thermoplastic polyurethane elastomer resins are weighed, in 150 DEG C of mixers
Middle mixing 2 minutes；Then, graphite 1000g is added, continues mixing 5 minutes；Subsequently discharge, cool down, is broken, obtaining thermoplasticity
Polyurethane elastomer master batch；Finally, 1000g polycaprolactones type thermoplastic polyurethane elastomer resin and 300g thermoplastic polies are weighed
Urethane elastomer master batch, is uniformly mixed, obtains a kind of Thermoplastic polyurethane elastomer material.
As the Thermoplastic polyurethane elastomer material obtained by graphite self-lubricating additive modification compared with comparative example 4, mechanics
Poor-performing, the friction coefficient under DRY SLIDING reduce, and the friction coefficient under hydraulic pressure Oil Lubrication Condition is equal, Akron abrasion
Increase；Compared with Example 3, the coefficient of kinetic friction increase under DRY SLIDING and under hydraulic pressure Oil Lubrication Condition, abrasion increase；It is dry
Friction coefficient under friction condition is far above the coefficient of kinetic friction under hydraulic pressure Oil Lubrication Condition, does not possess self-lubricating function, is dropping
Abrasion loss can be increased while low-friction coefficient.Thermoplastic polyurethane elastomer material obtained by graphite self-lubricating additive modification
The Thermoplastic polyurethane elastomer material being modified in terms of friction coefficient and abrasion are reduced not as good as organic siliconresin.
The self-lubricating thermoplastic polyurethane elastomer material performance table of comparisons is used in the sealing of 1 hydropneumatic of table
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention and from above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. self-lubricating thermoplastic polyurethane elastomer material is used in a kind of hydropneumatic sealing, it is characterised in that：The material mainly by
Raw material according to the mass fraction is made below：
100 parts of thermoplastic polyurethane elastomer resin
10~30 parts of self-lubricating thermoplastic polyurethane elastomer master batch.
2. self-lubricating thermoplastic polyurethane elastomer material is used in a kind of hydropneumatic sealing according to claim 1, it is special
Sign is：The thermoplastic polyurethane elastomer resin is Polyether-type thermoplastic polyurethane elastomer resin, polyester-type thermoplastic
Property polyurethane elastomer resins, polycaprolactone type thermoplastic polyurethane elastomer resin, polycarbonate type thermoplastic polyurethane bullet
At least one of property body resin.
3. self-lubricating thermoplastic polyurethane elastomer material is used in a kind of hydropneumatic sealing according to claim 1, it is special
Sign is：The self-lubricating thermoplastic polyurethane elastomer master batch is made by following raw material according to the mass fraction：
100 parts of thermoplastic polyurethane elastomer resin
10~100 parts of self-lubricant anti-friction auxiliary agent.
4. self-lubricating thermoplastic polyurethane elastomer material is used in a kind of hydropneumatic sealing according to claim 3, it is special
Sign is：The thermoplastic polyurethane elastomer resin is Polyether-type thermoplastic polyurethane elastomer resin, polyester-type thermoplastic
Property polyurethane elastomer resins, polycaprolactone type thermoplastic polyurethane elastomer resin, polycarbonate type thermoplastic polyurethane bullet
At least one of property body resin.
5. self-lubricating thermoplastic polyurethane elastomer material is used in a kind of hydropneumatic sealing according to claim 3, it is special
Sign is：The self-lubricant anti-friction auxiliary agent is made by following raw material according to the mass fraction：
100 parts of organic siliconresin
0.1~1 part of diisocyanate.
6. self-lubricating thermoplastic polyurethane elastomer material is used in a kind of hydropneumatic sealing according to claim 5, it is special
Sign is：The relative molecular mass 100,000~1,000,000 of the organic siliconresin.
7. self-lubricating thermoplastic polyurethane elastomer material is used in a kind of hydropneumatic sealing according to claim 5, it is special
Sign is：The diisocyanate is 4,4 '-methyl diphenylene diisocyanate, paraphenylene diisocyanate, 1,5- naphthalenes two are different
At least one of cyanate, 2,4 toluene diisocyanate.
8. self-lubricating thermoplastic polyurethane elastomer material is used in a kind of hydropneumatic sealing according to claim 3, it is special
Sign is：The self-lubricant anti-friction auxiliary agent is prepared according to following steps：
A) 100 parts by weight organic siliconresins are weighed, 80~100 DEG C are heated in reaction kettle, 10 minutes is kept the temperature, is melted
Organic siliconresin；
B) 0.1~1 parts by weight diisocyanate is weighed, is added directly into the reaction kettle of the organic siliconresin containing melting, control
800~1500 revs/min of mixing speed processed, controls 80~100 DEG C of temperature, reacts 30 minutes, obtains self-lubricant anti-friction auxiliary agent.
9. according to a kind of hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer of claim 1~8 any one of them
The preparation method of material, it is characterised in that include step in detail below：
A) 100 parts per weight of thermoplastic's polyurethane elastomer resins are weighed, mixing 2 minutes, obtain in 140~180 DEG C of mixers
The polyurethane elastomer resins of melting；
B) 10~100 parts by weight self-lubricant anti-friction auxiliary agents are added in the thermoplastic polyurethane elastomer resin of melting, are continued close
Refining 5 minutes, then discharges, cools down, is broken, obtaining self-lubricating thermoplastic polyurethane elastomer master batch；
C) 100 parts per weight of thermoplastic's polyurethane elastomer resins are weighed, add self-lubricating heat obtained by 10~30 parts by weight step b)
Plastic polyurethane elastomer master batch, is uniformly mixed, obtains hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer material.
10. according to a kind of hydropneumatic sealing self-lubricating thermoplastic polyurethane elastomer of claim 1~8 any one of them
Application of the material in manufacture hydraulic pressure and pneumatic seal product.
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Application publication date: 20180511 |