CN108795024A - A kind of compound polyurethane material and the preparation method and application thereof - Google Patents
A kind of compound polyurethane material and the preparation method and application thereof Download PDFInfo
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- CN108795024A CN108795024A CN201810322191.1A CN201810322191A CN108795024A CN 108795024 A CN108795024 A CN 108795024A CN 201810322191 A CN201810322191 A CN 201810322191A CN 108795024 A CN108795024 A CN 108795024A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a kind of compound polyurethane materials and the preparation method and application thereof, belong to technical field of composite materials.Solve in the prior art that polyurethane bearing material endogenous heat is big, wet-hot aging performance is bad, and intolerant to intensive polar solvent and strong acid alkaline media, the technical issues of being easy attachment pollutant and grow bacterium.The compound polyurethane material of the present invention, is made of the plasticizer of the polyether polyurethane of 100 parts by weight, the oyster shell whiting of 4-8 parts by weight, the starch of 10-15 parts by weight, the boron nitride of 2-4 parts by weight, the titanium carbide of 0.5-1 parts by weight, the paraffin of 1-4 parts by weight, the nano-bentonite of 0.2-1 parts by weight, the polycarbodiimide of 1.5-3 parts by weight, the polytetrafluoroethylene powder of 5-10 parts by weight, 0.2-0.3 parts of antioxidant and 1-2 parts by weight.The tearing strength of the compound polyurethane material is high, tensile strength is high, good impact resistance, and antibacterial, wear-resisting, hydrolysis, wet-heat resisting.
Description
Technical field
The invention belongs to technical field of composite materials, and in particular to a kind of compound polyurethane material and preparation method thereof with answer
With.
Background technology
Sliding bearing refers to the bearing to work under sliding friction.The main water lubrication of lubricating system that sliding bearing uses
With oil lubrication two ways.Oil lubrication often will appear oily leakage phenomenon, not only pollutes environment but also can leave oil stain and give away one's position,
Therefore Ship class bearing generally uses water lubrication mode.Water lubriucated bearing frequently with material mainly have rubber and engineering plastic
Material.Rubber oil-resistant, water resistance, heat-resisting quantity, damping noise reduction are excellent, are often used as water lubriucated bearing.Compared to rubber
Glue family macromolecule material, resinae high molecular material low speed stick-slip characteristic unobvious have preferable low-speed performance, therefore in axis
The application held is more extensive, if polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene, polyimides are all common bearing materials.But
Engineering plastics class bearing is often contacted with main shaft, poor to the sundries wrapping property such as silt because not having elasticity, therefore abrasive wear is very
Seriously, the service life is also very short.
Polyurethane is the abbreviation of polyurethanes, is widely used in various fields, is known as the fifth-largest plastics.It has
There are many excellent performances such as wear-resisting property is excellent, anti-flex performance is excellent, damping performance is excellent, non-skid property is excellent, is one
The good bearing material base material of kind.In the prior art, some existing polyurethane bearing materials, but polyurethane endogenous heat is big, it is resistance to
High-temperature behavior is general, and especially wet-hot aging performance is bad, and intolerant to intensive polar solvent and strong acid alkaline media, and density is low, hole
Greatly, long period of soaking is easy attachment pollutant in water body and grows bacterium, and polyurethane bearing material nothing in the prior art
Method solves the above problems well.Moreover, polyurethane bearing material in the prior art, auxiliary material easily reunites, bad dispersibility, influences
The comprehensive performance of material.
Invention content
In view of this, the object of the present invention is to provide a kind of compound polyurethane material and the preparation method and application thereof, solve
Polyurethane bearing material endogenous heat is big in the prior art, and wet-hot aging performance is bad, and intolerant to intensive polar solvent and strong acid alkaline media,
The technical issues of being easy attachment pollutant and growing bacterium, it is comprehensive to further increase wearability, intensity of polyurethane bearing material etc.
Close performance.
It is as follows that the present invention solves the technical solution that above-mentioned technical problem is taken.
Compound polyurethane material, composition and parts by weight are as follows：
The hard section mass fraction of the polyether polyurethane is 50-55%.
Preferably, the antioxidant be antioxidant 1010, antioxidant 264, one or both of antioxidant 1076 with
On mixture.
Preferably, the plasticizer is dioctyl phthalate (DOP), dioctyl isophthalate (DOIP), adjacent benzene
The mixture of one or more of dibutyl carboxylic acid (DBP), dibutyl phthalate (DHP) (DHP).
Preferably, the mesh number of the oyster shell whiting is 300-500.
Preferably, the oyster shell whiting be 5-6 parts by weight, starch be 4-5 parts by weight, paraffin be 0.5-0.8 parts by weight, poly- four
Vinyl fluoride powder is 6-8 parts by weight.
The present invention also provides the preparation methods of above-mentioned compound polyurethane material, and steps are as follows：
Step 1: by the oyster shell whiting of 4-8 parts by weight, the starch of 2-5 parts by weight, the boron nitride of 2-4 parts by weight, 0.5-1 weights
Measure the titanium carbide of part, the paraffin of 1-4 parts by weight, the nano-bentonite of 0.2-1 parts by weight, 1.5-3 parts by weight carbodiimides,
The plasticizer of the polytetrafluoroethylene powder of 5-10 parts by weight, the antioxidant of 0.2-0.3 parts by weight and 1-2 parts by weight is uniformly mixed,
Obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
90-120 DEG C of preheating 5-10min, 300-400 turns/min stirring 10-20min, then in 175-220 DEG C of melting extrusion, obtains poly- ammonia
Ester composite material.
Application the present invention also provides above-mentioned compound polyurethane material as water lubricating bearing material.
Compared with prior art, beneficial effects of the present invention are：
Compound polyurethane material provided by the invention, tearing strength is high, tensile strength is high, good impact resistance, and antibacterial, resistance to
Mill, hydrolysis, wet-heat resisting.Through experimental tests, in room temperature and 300 DEG C of seawater, load 1000N, rotating speed 1000RPM, the time
60min, abrasion loss are only respectively 0.012g-0.017g and 0.022g-0.025g；Tensile strength is 59-65MPa, extension at break
Rate is 730%-775%, tearing strength 90KN/m-98KN/m, impact elasticity 29%-35%；Water lubriucated bearing can be used as
Materials'use.
The preparation method of compound polyurethane material provided by the invention is simple for process, and each component favorable dispersibility contributes to
Realize the promotion of material comprehensive performance.
Specific implementation mode
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still
It should be appreciated that these descriptions are only the feature and advantage further illustrated the present invention, rather than to the claims in the present invention
Limitation.
The present invention compound polyurethane material, by the polyether polyurethane of 100 parts by weight, 4-8 parts by weight oyster shell whiting,
Paraffin, the 0.2-1 of the starch of 10-15 parts by weight, the boron nitride of 2-4 parts by weight, the titanium carbide of 0.5-1 parts by weight, 1-4 parts by weight
Polytetrafluoroethylene powder, the 0.2-0.3 of the nano-bentonite of parts by weight, the polycarbodiimide of 1.5-3 parts by weight, 5-10 parts by weight
The antioxidant of parts by weight and the plasticizer composition of 1-2 parts by weight.
In the present invention, polyether polyurethane is base material, is one kind of thermoplastic polyurethane.The polyether-type that the present invention uses is poly-
The hard section mass fraction of urethane is 50-55%, can ensure the water resistance of material and the hardness of demand, so ensure and other
The mixed comprehensive performance of material.The polyether polyurethane can be used the acquisition of those skilled in the art's well-known way, it is such as commercially available or
It is prepared using laboratory, when being prepared using laboratory, it is preferred to use PolyTHF and 1,6- hexylene glycols are raw material, two isocyanides
Acid esters is not particularly limited, by matching diisocyanate and 1, the dosage of 6- hexylene glycols, you can the polyether-type for obtaining demand is poly-
Urethane.
In the present invention, since polyurethane material density is low, it is easy to adhere to pollutant and grow bacterium to lead to fault in material, shellfish
The addition of shell powder can assign material excellent antibiotic property, and the abrasion resistance and hardness of reinforcing material, and then improve material
Compactness improves water resistance.To improve dispersibility, the preferably mesh number of oyster shell whiting is 300-500.The preferred 5-6 parts by weight of oyster shell whiting.
Compared to nano-titanium dioxide, acquirement can better effect, and cost is greatly lowered.
In the present invention, due to being added to inorganic material in component, it is easy to reunite, addition starch can play good bridge
Effect, inorganic material can be good at being merged with polyurethane material, and due to the hard section of the polyurethane of the invention used
Content is higher, and stretching, the flexure of material can also wait mechanical mechanics properties can decrease, and the addition of starch can improve material
Mechanical mechanics property.Preferred starch is 4-5 parts by weight.
In the present invention, friction coefficient can be effectively reduced when material at high temperature rubs by adding titanium carbide and boron nitride,
The generation for reducing frictional heat, even if also unaffected in hygrometric state；And the wearability of material is improved, material can be ensured in high temperature
Under hygrometric state running at high speed for bearing is maintained with enough intensity, hardness.
In the present invention, addition paraffin reduces friction coefficient, and improve the compatibility of material as self-lubricating agent.
In the present invention, the addition of nano-bentonite makes the leakproofness of polyurethane material and high temperature resistance increase substantially,
And then improve the antibiotic property of material.It is preferred that nano-bentonite is 0.5-0.8 parts by weight.
In the present invention, polycarbodiimide provides material excellent hydrolysis and acid-fast alkali-proof corrosive power.
In the present invention, polytetrafluoroethylene powder improves the wear-resisting property and mechanical property of material, and can improve polyurethane material
Hydrolysis ability.Preferably polytetrafluoroethylene powder is 6-8 parts by weight.
In the present invention, antioxidant is one or more of antioxidant 1010, antioxidant 264, antioxidant 1076
Mixture.
In the present invention, plasticizer is dioctyl phthalate (DOP), dioctyl isophthalate (DOIP), adjacent benzene two
The mixture of one or more of formic acid dibutyl ester (DBP), dibutyl phthalate (DHP) (DHP).Increase the tough of material
Property, avoid material hardness excessively high.
The present invention also provides the preparation methods of above-mentioned compound polyurethane material, and steps are as follows：
Step 1: by the oyster shell whiting of 4-8 parts by weight, the starch of 10-15 parts by weight, the boron nitride of 2-4 parts by weight, 0.5-1
The poly- carbonization two of the titanium carbide of parts by weight, the paraffin of 1-4 parts by weight, the nano-bentonite of 0.2-1 parts by weight, 1.5-3 parts by weight
The plasticizer mixing of imines, the polytetrafluoroethylene powder of 5-10 parts by weight, the antioxidant of 0.2-0.3 parts by weight and 1-2 parts by weight
Uniformly, the first mixed system is obtained；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
90-120 DEG C of preheating 5-10min, 300-400 turns/min stirring 10-20min, then in 175-220 DEG C of melting extrusion, obtains poly- ammonia
Ester composite material.
It should be noted that since the inorganic filler that the present invention uses is more, it is necessary to using multiple step format hybrid mode and in advance
Thermal agitation just can guarantee the final performance of composite material, otherwise there is the influence of highly significant to mechanical property.
Application the present invention also provides above-mentioned compound polyurethane material as water lubricating bearing material.Concrete application mode with
The application mode of polyurethane bearing material in the prior art is identical.
It further illustrates the present invention with reference to embodiments.
Embodiment 1
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 4 parts by weight, 15 parts by weight
Powder, the boron nitride of 4 parts by weight, the titanium carbide of 0.5 parts by weight, the paraffin of 1 parts by weight, the nano-bentonite of 0.2 parts by weight, 1.5
The polycarbodiimide of parts by weight, the polytetrafluoroethylene powder of 10 parts by weight, the antioxidant 1010 of 0.3 parts by weight and 1 parts by weight
Plasticizer DBP composition.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by oyster shell whiting, starch, boron nitride, titanium carbide, paraffin, nano-bentonite, poly- carbonization two
Imines, polytetrafluoroethylene powder, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
120 DEG C of preheating 5min, 400 turns/min stirs 20min, then in 175-220 DEG C of melting extrusion, obtains compound polyurethane material.
Embodiment 2
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 8 parts by weight, 10 parts by weight
Powder, the boron nitride of 2 parts by weight, the titanium carbide of 1 parts by weight, the paraffin of 4 parts by weight, the nano-bentonite of 1 parts by weight, 3 parts by weight
Polycarbodiimide, the polytetrafluoroethylene powders of 5 parts by weight, 0.2 parts by weight antioxidant 264 and 2 parts by weight plasticizer
DOP is formed.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by oyster shell whiting, starch, boron nitride, titanium carbide, paraffin, nano-bentonite, poly- carbonization two
Imines, polytetrafluoroethylene powder, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
90 DEG C of preheating 8min, 400 turns/min stirring 20min, then 175-220 DEG C of melting extrusion, obtain compound polyurethane material.
Embodiment 3
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 6 parts by weight, 12 parts by weight
Powder, the boron nitride of 3 parts by weight, the titanium carbide of 1 parts by weight, the paraffin of 2 parts by weight, the nano-bentonite of 0.5 parts by weight, 2 weight
Part polycarbodiimide, the polytetrafluoroethylene powders of 8 parts by weight, 0.3 parts by weight antioxidant 1010 and 1.5 parts by weight increasing
Mould agent DOP compositions.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by oyster shell whiting, starch, boron nitride, titanium carbide, paraffin, nano-bentonite, poly- carbonization two
Imines, polytetrafluoroethylene powder, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
100 DEG C of preheating 6min, 300 turns/min stirs 10min, then in 175-220 DEG C of melting extrusion, obtains compound polyurethane material.
Embodiment 4
The compound polyurethane material of the present invention, by the polyether polyurethane of 100 parts by weight, the oyster shell whiting of 7 parts by weight, 13 weights
It is swollen to measure the starch of part, the boron nitride of 2.5 parts by weight, the titanium carbide of 0.8 parts by weight, the paraffin of 1 parts by weight, the nanometer of 1 parts by weight
The antioxidant 1076 and 2 weights of profit soil, the polycarbodiimide of 2 parts by weight, the polytetrafluoroethylene powder of 9 parts by weight, 0.2 parts by weight
Measure the Plasticizer DBP composition of part.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by oyster shell whiting, starch, boron nitride, titanium carbide, paraffin, nano-bentonite, poly- carbonization two
Imines, polytetrafluoroethylene powder, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
100 DEG C of preheating 7min, 300 turns/min stirs 15min, then in 175-220 DEG C of melting extrusion, obtains compound polyurethane material.
Comparative example 1
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 1 parts by weight, 15 parts by weight
Powder, the boron nitride of 4 parts by weight, the titanium carbide of 0.5 parts by weight, the paraffin of 1 parts by weight, the nano-bentonite of 0.2 parts by weight, 1.5
The polycarbodiimide of parts by weight, the polytetrafluoroethylene powder of 10 parts by weight, the antioxidant 1010 of 0.3 parts by weight and 1 parts by weight
Plasticizer DBP composition.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by starch, boron nitride, titanium carbide, paraffin, nano-bentonite, polycarbodiimide, gathering
Tetrafluoroethene powder, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
120 DEG C of preheating 5min, 400 turns/min stirs 20min, then in 175-220 DEG C of melting extrusion, obtains compound polyurethane material.
Comparative example 2
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 4 parts by weight, 5 parts by weight
Powder, the boron nitride of 4 parts by weight, the titanium carbide of 0.5 parts by weight, the paraffin of 1 parts by weight, the nano-bentonite of 0.2 parts by weight, 1.5
The polycarbodiimide of parts by weight, the polytetrafluoroethylene powder of 10 parts by weight, the antioxidant 1010 of 0.3 parts by weight and 1 parts by weight
Plasticizer DBP composition.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by oyster shell whiting, starch, boron nitride, titanium carbide, paraffin, nano-bentonite, poly- carbonization two
Imines, polytetrafluoroethylene powder, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
120 DEG C of preheating 5min, 400 turns/min stirs 20min, then in 175-220 DEG C of melting extrusion, obtains compound polyurethane material.
Comparative example 3
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 4 parts by weight, 15 parts by weight
Poly- the four of powder, the paraffin of 1 parts by weight, the nano-bentonite of 0.2 parts by weight, the polycarbodiimide of 1.5 parts by weight, 10 parts by weight
The Plasticizer DBP of vinyl fluoride powder, the antioxidant 1010 of 0.3 parts by weight and 1 parts by weight forms.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by oyster shell whiting, starch, paraffin, nano-bentonite, polycarbodiimide, polytetrafluoroethylene (PTFE)
Powder, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
120 DEG C of preheating 5min, 400 turns/min stirs 20min, then in 175-220 DEG C of melting extrusion, obtains compound polyurethane material.
Comparative example 4
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 4 parts by weight, 15 parts by weight
The polytetrafluoroethyl-ne of powder, the boron nitride of 4 parts by weight, the titanium carbide of 0.5 parts by weight, the nano-bentonite of 0.2 parts by weight, 10 parts by weight
The Plasticizer DBP of alkene powder, the antioxidant 1010 of 0.3 parts by weight and 1 parts by weight forms.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by oyster shell whiting, starch, boron nitride, titanium carbide, nano-bentonite, polycarbodiimide,
Polytetrafluoroethylene powder, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
120 DEG C of preheating 5min, 400 turns/min stirs 20min, then in 175-220 DEG C of melting extrusion, obtains compound polyurethane material.
Comparative example 5
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 4 parts by weight, 15 parts by weight
Powder, the boron nitride of 4 parts by weight, the titanium carbide of 0.5 parts by weight, the paraffin of 1 parts by weight, the polycarbodiimide of 1.5 parts by weight, 10
The Plasticizer DBP of the polytetrafluoroethylene powder of parts by weight, the antioxidant 1010 of 0.3 parts by weight and 1 parts by weight forms.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by oyster shell whiting, starch, boron nitride, titanium carbide, paraffin, polycarbodiimide, polytetrafluoro
Ethylene powder, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
120 DEG C of preheating 5min, 400 turns/min stirs 20min, then in 175-220 DEG C of melting extrusion, obtains compound polyurethane material.
Comparative example 6
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 4 parts by weight, 15 parts by weight
Powder, the boron nitride of 4 parts by weight, the titanium carbide of 0.5 parts by weight, the paraffin of 1 parts by weight, the nano-bentonite of 0.2 parts by weight, 0.5
The plasticizer of the polycarbodiimide of parts by weight, the antioxidant of 0.3 parts by weight and 1 parts by weight forms.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
Step 1: by weight, by oyster shell whiting, starch, boron nitride, titanium carbide, paraffin, nano-bentonite, poly- carbonization two
Imines, antioxidant and plasticizer are uniformly mixed, and obtain the first mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first exists
120 DEG C of preheating 5min, 400 turns/min stirs 20min, then in 175-220 DEG C of melting extrusion, obtains compound polyurethane material.
Comparative example 7
Compound polyurethane material, by the polyether polyurethane of 100 parts by weight, the shallow lake of the oyster shell whiting of 4 parts by weight, 15 parts by weight
Powder, the boron nitride of 4 parts by weight, the titanium carbide of 0.5 parts by weight, the paraffin of 1 parts by weight, the nano-bentonite of 0.2 parts by weight, 1.5
The polycarbodiimide of parts by weight, the polytetrafluoroethylene powder of 10 parts by weight, the antioxidant 1010 of 0.3 parts by weight and 1 parts by weight
Plasticizer DBP composition.
The preparation method of above-mentioned compound polyurethane material, steps are as follows：
By weight, by polyether polyurethane, oyster shell whiting, starch, boron nitride, titanium carbide, paraffin, nano-bentonite, poly-
Carbodiimides, polytetrafluoroethylene powder, antioxidant and plasticizer are uniformly mixed, and in 175-220 DEG C of melting extrusion, obtain poly- ammonia
Ester composite material.
The performance of the composite material of embodiment 1-4 and comparative example 1-7 is detected, the results are shown in Table 1.Wherein, it draws
Stretch intensity and examination criteria that elongation at break uses for：GB/T1701-2001；The examination criteria that hardness uses is GB/
T2411-2008；The examination criteria that impact elasticity uses is GB/T 1843-2008.Water lubrication wearability and damp and hot wear-resisting property
Detection method be that respectively in room temperature and 300 DEG C of seawater, using MPV50 type ship bearing testers, test condition is load
1000N, rotating speed 1000RPM, time 60min；The front and back weight difference of sample friction is measured as abrasion loss.The test-strips of antibiotic property
Part is：It by sample preparation at the batten at 10mm × 10mm × 2mm, is put into the culture dish of sterilizing, the sample into culture dish
The upper bacterium solution that 0.5 milliliter of coliform count is added dropwise every time and is adjusted to about 10/milliliter, culture dish is covered from outside, is prevented
Only thalline is mixed into from outside in culture dish, is taken care of at room temperature.Bacterium solution is taken out after for 24 hours, moves into culture medium and cultivates, and is measured
It is examined the bacterium number of body.
The performance characterization of the composite material of table 1 embodiment 1-4 and comparative example 1-7
As it can be seen from table 1 compound polyurethane material provided by the invention, tearing strength is high, tensile strength is high, shock resistance
Property is good, and antibacterial, wear-resisting, hydrolysis, wet-heat resisting.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (7)
1. compound polyurethane material, which is characterized in that composition and parts by weight are as follows：
The hard section mass fraction of the polyether polyurethane is 50-55%.
2. compound polyurethane material according to claim 1, which is characterized in that the antioxidant be antioxidant 1010,
The mixture of one or more of antioxidant 264, antioxidant 1076.
3. compound polyurethane material according to claim 1, which is characterized in that the plasticizer is that phthalic acid two is pungent
The mixing of one or more of ester, dioctyl isophthalate, dibutyl phthalate, dibutyl phthalate (DHP)
Object.
4. compound polyurethane material according to claim 1, which is characterized in that the mesh number of the oyster shell whiting is 300-500.
5. compound polyurethane material according to claim 1, which is characterized in that the oyster shell whiting is 5-6 parts by weight, starch
For 4-5 parts by weight, paraffin is 0.5-0.8 parts by weight, and polytetrafluoroethylene powder is 6-8 parts by weight.
6. the preparation method of the compound polyurethane material described in claim 1-5 any one, which is characterized in that steps are as follows：
Step 1: by the oyster shell whiting of 4-8 parts by weight, the starch of 2-5 parts by weight, the boron nitride of 2-4 parts by weight, 0.5-1 parts by weight
Titanium carbide, the paraffin of 1-4 parts by weight, the nano-bentonite of 0.2-1 parts by weight, 1.5-3 parts by weight carbodiimides, 5-10
The plasticizer of the polytetrafluoroethylene powder of parts by weight, the antioxidant of 0.2-0.3 parts by weight and 1-2 parts by weight is uniformly mixed, and is obtained
First mixed system；
Step 2: the polyether polyurethane of 100 parts by weight is added into the first mixed system, it is uniformly mixed, then first in 90-
120 DEG C of preheating 5-10min, 300-400 turns/min stirring 10-20min, then in 175-220 DEG C of melting extrusion, it is multiple to obtain polyurethane
Condensation material.
7. application of the compound polyurethane material described in claim 1-5 any one as water lubricating bearing material.
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| CN111621137A (en) * | 2020-06-22 | 2020-09-04 | 福州大学 | Low-smoke low-toxicity flame-retardant thermoplastic polyurethane composite material and preparation method thereof |
| CN112239597A (en) * | 2019-07-19 | 2021-01-19 | 施建辉 | Flexible noise reduction pad for dice shaking device of automatic mahjong table |
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