CN108219224A - Compounded rubber and preparation method thereof - Google Patents
Compounded rubber and preparation method thereof Download PDFInfo
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- CN108219224A CN108219224A CN201810070358.XA CN201810070358A CN108219224A CN 108219224 A CN108219224 A CN 108219224A CN 201810070358 A CN201810070358 A CN 201810070358A CN 108219224 A CN108219224 A CN 108219224A
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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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
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- C08L2201/02—Flame or fire retardant/resistant
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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
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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
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Abstract
The present invention relates to field of rubber materials, the problem of shortcoming for ozone-resistant aging property, provide a kind of compounded rubber and preparation method thereof, can preferably improve ozone-resistant aging property, the technical solution is as follows：Raw material including following mass fraction is made：20 50 parts of polyurethane, 50 80 parts of nitrile rubber, 48 parts of plasticizer, 20 50 parts of white carbon, 0.5 3 parts of silane coupling agent, 40 60 parts of fire retardant, 1.5 4 parts of crosslinking agent, 6 10 parts of clay.A kind of method for preparing above-mentioned compounded rubber, includes the following steps：（1）Milling maternal rubber；（2）Rubber master batch adds sulphur：Extend the coagulation time that rubber master batch does not add the crosslinking agent stage；（3）Vulcanization.Oil resistivity is provided by the acrylonitrile in nitrile rubber, anti-flammability is provided by fire retardant, preferable ozone-resistant aging property is provided by polyurethane.By not extending rubber master batch in open mill not plus the mixing time in crosslinking agent stage is so that clay preferably disperses in rubber compound, the ozone-resistant aging property of compounded rubber is improved.
Description
Technical field
The present invention relates to field of rubber materials, more specifically, it relates to a kind of compounded rubber and preparation method thereof.
Background technology
Compounded rubber great advantage is the length of rich a variety of materials, as high intensity, light, high-low temperature resistant, it is corrosion-resistant, adiabatic,
The properties such as insulation according to application purpose, choose high molecular material and other materials with special nature, are made and meet needs
Composite material.
Nitrile rubber is as made from butadiene and acrylonitrile through emulsion polymerization, and nitrile rubber mainly uses low temperature lotion
Polymerization produces, and oil resistivity is fabulous, and wearability is higher, and heat resistance is preferable, and bonding force is strong.The drawback is that lower temperature resistance is poor, resistance to smelly
Oxygen is poor, and insulation performance is inferior, and elasticity is slightly lower.Nitrile rubber is mainly for the manufacture of oil resistant rubber product.
In nitrile rubber acrylonitrile content mass percent have 42%~46%, 36%~41%, 31%~35%, 25%~30%,
18%~24% five kinds of grade.Acrylonitrile content is more, and oil resistivity is better, but cold resistance then accordingly declines, it can be in 120 DEG C of sky
It is used for a long time in gas or in 150 DEG C of oil.In addition, it also has good water resistance, air-tightness and excellent adhesive property.
It is widely used in the various oil resistant rubber products of system, a variety of oil seat gaskets, gasket, casing, flexible package, flexible rubber hose, printer's roll, cable
Glue material etc. becomes essential elastic material in the industries such as automobile, aviation, oil, duplicating.
But since the ozone resistance of nitrile rubber is poor, and the range of its application is wider, and is usually used in oil-resistant article, needs
Want preferable anti-flammability and longer service life, and ozone-resistant aging property is poor will be as the weight for restricting its service life
Factor is wanted, also improves space.
Invention content
The first object of the present invention is to provide a kind of compounded rubber, has and is having preferable oil resistivity and anti-flammability
The advantages of ozone-resistant aging property is excellent simultaneously.
To achieve the above object, the present invention provides following technical solutions：
A kind of compounded rubber, the raw material including following mass fraction are made, and wherein each component content is represented with mass fraction：
20-50 parts of polyurethane
50-80 parts of nitrile rubber
4-8 parts of plasticizer
20-50 parts of white carbon
0.5-3 parts of silane coupling agent
40-60 parts of fire retardant
1.5-4 parts of crosslinking agent.
Using above-mentioned technical proposal, oil resistivity is provided by the acrylonitrile in nitrile rubber, is provided by fire retardant fire-retardant
Property, by white carbon reinforcement with proof strength, by adding polyurethane so that polyurethane and nitrile rubber formation balanced constant, carry
For preferable ozone-resistant aging property.
Preferably, the content of each component is：
30-40 parts of polyurethane
60-70 parts of nitrile rubber
5-7 parts of plasticizer
30-40 parts of white carbon
0.5-1.5 parts of silane coupling agent
45-55 parts of fire retardant
2-3 parts of crosslinking agent.
Using above-mentioned technical proposal, oil resistivity is provided by the acrylonitrile in nitrile rubber, is provided by fire retardant fire-retardant
Property, by white carbon reinforcement with proof strength, by adding polyurethane so that polyurethane and nitrile rubber formation balanced constant, carry
For preferable ozone-resistant aging property.
Preferably, the crosslinking agent is peroxide cross-linking agent.
Using above-mentioned technical proposal, by using peroxide cross-linking agent, ozone-resistant aging property is further improved.
Preferably, the raw material of following mass fraction is further included：
6-10 parts of clay.
It using above-mentioned technical proposal, by adding in clay, is dispersed in system using clay and forms protective layer, stop ozone
Molecule enters in compounded rubber, and then slows down the speed that ozone molecule enters in compounded rubber, further improves resistance to ozone aging
Performance.
Preferably, the raw material of following mass fraction is further included：
1-3 parts of antiozonant.
Using above-mentioned technical proposal, by adding in antiozonant, ozone-resistant aging property is further improved.
Preferably, the raw material of following mass fraction is further included：
1-2 parts of anti-aging agent.
Using above-mentioned technical proposal, by adding in anti-aging agent, hot oxytolerant ageing properties are improved.
Preferably, the polyurethane is polyether polyurethane.
Using above-mentioned technical proposal, improved using the anti-hydrolytic performance of polyether polyurethane and preferable cryogenic property multiple
Close the water resistance and cryogenic property of rubber entirety.
Preferably, acrylonitrile content mass percent is 36%-42% in the nitrile rubber.
Using above-mentioned technical proposal, since the acrylonitrile content of nitrile rubber is 36%-42%, so that nitrile rubber dosage subtracts
It is few also to ensure enough oil resistivitys so that more polyurethane can be added in compounded rubber, and then preferably resistance to ozone is provided
Ageing properties.
The second object of the present invention is to provide a kind of compounded rubber preparation method, have have preferable oil resistivity and
The advantages of ozone-resistant aging property is excellent while anti-flammability.
To achieve the above object, the present invention provides following technical solutions：
A kind of method for preparing above-mentioned compounded rubber, includes the following steps：
（1）Milling maternal rubber：
By in polyurethane and nitrile rubber input mixer, then pressure floating weight 10-30 seconds puts into anti-aging agent, antiozonant, resistance
Fire agent, then pressure floating weight 10-30 second puts into white carbon, pressure floating weight to 140 DEG C -145 DEG C, finally input silane coupling agent,
Plasticizer, clay, pressure floating weight to 150 DEG C of -155 DEG C of dumpings；
（2）Rubber master batch adds sulphur：
Rubber master batch after parking is smash into glue 60-120 seconds on a mill, roll spacing 3-4mm continues to smash glue 60-120 seconds, roll spacing 1-
2mm, thin 6-12 times logical, roll spacing 0.5-1mm add in crosslinking agent, and roll spacing 3-4mm, thin 3-5 times logical, roll spacing 1-2mm beats triangle bag
Bottom sheet after 6-8, roll spacing 4-5mm；
（3）Vulcanization：
Conditions of vulcanization：Pressure 6-14kg/cm2, 150 DEG C -170 DEG C of temperature, vulcanization time 10-30 minutes.
Using above-mentioned technical proposal, since rubber master batch does not add the mixing time in crosslinking agent stage longer in open mill, with profit
Rubber master batch Mooney is reduced with open mill, the step of plasticating carried out to reduce Mooney can be cancelled so that compounded rubber obtains close door
While Buddhist nun, processing step is reduced, sizing material transport is reduced, improves production efficiency；Simultaneously low roll spacing it is thin it is logical during, to glue
Material provides the stronger effect of pullling so that and the layer structure of clay preferably detaches preferably in rubber compound to disperse, and then
So that the protective layer distribution area that clay is formed in compounded rubber is wider, preferably stop that ozone molecule enters compounded rubber
In, further improve the ozone-resistant aging property of compounded rubber.
Preferably, roll spacing is 0.5mm when thin 6-12 times logical in step 2.
Using above-mentioned technical proposal, due to it is thin 6-12 times logical when roll spacing be 0.5mm so that rubber master batch was subject in open mill
It pulls that power is stronger, further improves the effect of dispersion clay, and then preferably improve the ozone-resistant aging property of compounded rubber.
In conclusion the invention has the advantages that：Oil resistivity is provided by the acrylonitrile in nitrile rubber, is passed through
Fire retardant provides anti-flammability, by white carbon reinforcement with proof strength, by adding polyurethane so that polyurethane and nitrile rubber
Balanced constant is formed, preferable ozone-resistant aging property is provided；By using peroxide cross-linking agent, add in clay and addition
Antiozonant improves ozone-resistant aging property；By adding in anti-aging agent, hot oxytolerant ageing properties are improved；Since rubber master batch is in mill
In machine not plus the mixing time in crosslinking agent stage it is longer with low roll spacing it is thin it is logical during so that clay is preferably in rubber compound
Middle dispersion further improves the ozone-resistant aging property of compounded rubber.
Specific embodiment
Below by embodiment, the present invention will be described in detail.
In specific examples below, can also it add in below to processing aid of the properties of product without materially affect, it is specific as follows：
Zinc oxide；Polyethylene glycol；Paraffin；Titanium dioxide；Color masterbatch.
In specific examples below, polyurethane is pure urethane solid, and trade mark Urepan50EL06G belongs to polyether-type
Polyurethane；The trade mark of nitrile rubber be NBR3950F, acrylonitrile content 39%；The fire retardant trade mark is FR516, belongs to halogen resistance
Fire agent；Anti-aging agent uses anti-aging agent RD；Antiozonant uses antiozonant NTU and antiozonant 6PPD；Plasticizer is using this
Field Conventional plasticizers, specially plasticizer NB-4；Crosslinking agent uses this field common cross-linking agent, specially peroxidating diisopropyl
Benzene；Totally three kinds of color masterbatch, respectively color masterbatch MP-1005-1, color masterbatch MP-1002-1, color masterbatch MP-100.
Embodiment 1
A kind of compounded rubber, the raw material including following mass fraction are made, and wherein each component content is represented with mass fraction：
Urepan50EL06G polyether polyurethane：20 parts；NBR3950F nitrile rubbers：50 parts；White carbon：20 parts；Clay：6
Part；Zinc oxide：1 part；Polyethylene glycol：0.5 part；Paraffin：0.5 part；Silane coupling agent：0.5 part；Titanium dioxide：5 parts；Anti-aging agent RD：
1 part；Fire retardant FR 516：40 parts；Antiozonant NTU：0.5 part；Antiozonant 6PPD：0.5 part；Plasticizer NB-4：4 parts；Peroxide
Change diisopropylbenzene (DIPB)：1.5 part；Color masterbatch MP-1005-1：0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
Embodiment 2
A kind of compounded rubber, formula are as follows：
Urepan50EL06G polyether polyurethane：30 parts；NBR3950F nitrile rubbers：60 parts；White carbon：30 parts；Clay：6
Part；Zinc oxide：1 part；Polyethylene glycol：0.5 part；Paraffin：0.5 part；Silane coupling agent：0.5 part；Titanium dioxide：5 parts；Anti-aging agent RD：
1 part；Fire retardant FR 516：45 parts；Antiozonant NTU：0.5 part；Antiozonant 6PPD：0.5 part；Plasticizer NB-4：4 parts；Peroxide
Change diisopropylbenzene (DIPB)：2 parts；Color masterbatch MP-1005-1：0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
Embodiment 3
A kind of compounded rubber, formula are as follows：
Urepan50EL06G polyether polyurethane：40 parts；NBR3950F nitrile rubbers：70 parts；White carbon：40 parts；Clay：10
Part；Zinc oxide：3 parts；Polyethylene glycol：1 part；Paraffin：1.5 part；Silane coupling agent：1.5 part；Titanium dioxide：5 parts；Anti-aging agent RD：2
Part；Fire retardant FR 516：55 parts；Antiozonant NTU：2.5 part；Antiozonant 6PPD：0.5 part；Plasticizer NB-4：7 parts；Peroxide
Change diisopropylbenzene (DIPB)：3 parts；Color masterbatch MP-1005-1：0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
Embodiment 4
A kind of compounded rubber, formula are as follows：
Urepan50EL06G polyether polyurethane：50 parts；NBR3950F nitrile rubbers：80 parts；White carbon：50 parts；Clay：10
Part；Zinc oxide：3 parts；Polyethylene glycol：1 part；Paraffin：1.5 part；Silane coupling agent：3 parts；Titanium dioxide：5 parts；Anti-aging agent RD：2 parts；
Fire retardant FR 516：60 parts；Antiozonant NTU：2.5 part；Antiozonant 6PPD：0.5 part；Plasticizer NB-4：8 parts；Peroxidating two
Isopropylbenzene：4 parts；Color masterbatch MP-1005-1：0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
Embodiment 5
A kind of compounded rubber, formula are as follows：
Urepan50EL06G polyether polyurethane：20 parts；NBR3950F nitrile rubbers：80 parts；White carbon：50 parts；Clay：7
Part；Zinc oxide：2.5 part；Polyethylene glycol：1 part；Paraffin：1 part；Silane coupling agent：1 part；Titanium dioxide：5 parts；Anti-aging agent RD：1.5
Part；Fire retardant FR 516：48 parts；Antiozonant NTU：1 part；Antiozonant 6PPD：1 part；Plasticizer NB-4：6.3 part；Peroxidating
Diisopropylbenzene (DIPB)：2.2 part；Color masterbatch MP-1005-1：0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
Embodiment 6
A kind of compounded rubber, formula are as follows：
Urepan50EL06G polyether polyurethane：50 parts；NBR3950F nitrile rubbers：50 parts；White carbon：50 parts；Clay：7
Part；Zinc oxide：2.5 part；Polyethylene glycol：1 part；Paraffin：1 part；Silane coupling agent：1 part；Titanium dioxide：5 parts；Anti-aging agent RD：1.5
Part；Fire retardant FR 516：48 parts；Antiozonant NTU：1 part；Antiozonant 6PPD：1 part；Plasticizer NB-4：6.3 part；Peroxidating
Diisopropylbenzene (DIPB)：2.2 part；Color masterbatch MP-1005-1：0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
Embodiment 7
A kind of compounded rubber, formula are as follows：
Urepan50EL06G polyether polyurethane：30 parts；70 parts of NBR3950F nitrile rubbers；White carbon：40 parts；Clay：7 parts；
Zinc oxide：2.5 part；Polyethylene glycol：1 part；Paraffin：1 part；Silane coupling agent：1 part；Titanium dioxide：5 parts；Anti-aging agent RD：1.5 part；
Fire retardant FR 516：48 parts；Antiozonant NTU：1 part；Antiozonant 6PPD：1 part；Plasticizer NB-4：6.3 part；Peroxidating two is different
Propyl benzene：2.2 part；Color masterbatch MP-1005-1：0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
Embodiment 8
A kind of compounded rubber, formula are as follows：
Urepan50EL06G polyether polyurethane：40 parts；60 parts of NBR3950F nitrile rubbers；White carbon：40 parts；Clay：7 parts；
Zinc oxide：2.5 part；Polyethylene glycol：1 part；Paraffin：1 part；Silane coupling agent：1 part；Titanium dioxide：5 parts；Anti-aging agent RD：1.5 part；
Fire retardant FR 516：48 parts；Antiozonant NTU：1 part；Antiozonant 6PPD：1 part；Plasticizer NB-4：6.3 part；Peroxidating two is different
Propyl benzene：2.2 part；Color masterbatch MP-1005-1：0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
Embodiment 9
A kind of compounded rubber, formula are as follows：
Urepan50EL06G polyether polyurethane：33 parts；NBR3950F nitrile rubbers：67 parts；White carbon：37 parts；Clay：7
Part；Zinc oxide：2.5 part；Polyethylene glycol：1 part；Paraffin：1 part；Silane coupling agent：1 part；Titanium dioxide：5 parts；Anti-aging agent RD：1.5
Part；Fire retardant FR 516：48 parts；Antiozonant NTU：1 part；Antiozonant 6PPD：1 part；Plasticizer NB-4：6.3 part；Peroxidating
Diisopropylbenzene (DIPB)：2.2 part；Color masterbatch MP-1005-1：0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
The preparation method of compounded rubber, its steps are as follows in embodiment 1- embodiments 9：
（1）Urepan50EL06G polyether polyurethane and NBR3950F nitrile rubbers are plasticated by open mill, thin 6 times logical, roller
Away from 0.5mm, fully plasticate；Then mixer is put under conditions of 110 DEG C to press again 4 minutes, obtain rubber master batch；
（2）Input zinc oxide, paraffin, titanium dioxide, color masterbatch MP-1005-1, color masterbatch MP-1002-1, color masterbatch MP- after rubber master batch pressing
100,100 DEG C of temperature presses 2 minutes；Put into anti-aging agent RD, antiozonant NTU, antiozonant 6PPD, fire retardant FR 516, temperature
115 DEG C of degree presses 2 minutes；Then white carbon, clay are put into, 115 DEG C of temperature presses 2 minutes；Finally put into silane coupling agent,
Polyethylene glycol, plasticizer NB-4,115 DEG C of temperature are pressed 3 minutes, are sent after molding to 22 cun of open mills, tabletting heat dissipation；
（3）Rubber master batch is smash to glue on a mill 2 minutes, roll spacing 3mm；Add in cumyl peroxide, roll spacing 3mm；Bao Tongsan times,
Roll spacing 1mm；Beat triangle bag six after bottom sheet, roll spacing 5mm；Roller temperature：Preliminary roller≤60 DEG C, back roller≤60 DEG C；Conditions of vulcanization：Pressure
6kg/cm2, 150 DEG C of temperature, vulcanization time 30 minutes.
Embodiment 10
A kind of compounded rubber, the raw material including following mass fraction are made, and wherein each component content is represented with mass fraction：
Urepan50EL06G polyether polyurethane：20 parts；NBR3950F nitrile rubbers：50 parts；White carbon：20 parts；Clay：6
Part；Silane coupling agent：0.5 part；Anti-aging agent RD：1 part；Fire retardant FR 516：40 parts；Antiozonant NTU：0.5 part；Antiozonant
6PPD：0.5 part；Plasticizer NB-4：4 parts；Cumyl peroxide：1.5 part.
Embodiment 11
A kind of compounded rubber, formula are as follows：
Urepan50EL06G polyether polyurethane：50 parts；NBR3950F nitrile rubbers：80 parts；White carbon：50 parts；Clay：10
Part；Silane coupling agent：3 parts；Anti-aging agent RD：2 parts；Fire retardant FR 516：60 parts；Antiozonant NTU：2.5 part；Antiozonant
6PPD：0.5 part；Plasticizer NB-4：8 parts；Cumyl peroxide：4 parts.
The preparation method of compounded rubber, its steps are as follows in embodiment 10- embodiments 11：
（1）Urepan50EL06G polyether polyurethane and NBR3950F nitrile rubbers are plasticated by open mill, thin 6 times logical, roller
Away from 0.5mm, fully plasticate；Then mixer is put under conditions of 110 DEG C to press again 4 minutes, obtain rubber master batch；
（2）100 DEG C of temperature after rubber master batch pressing, presses 2 minutes；Put into anti-aging agent RD, antiozonant NTU, antiozonant 6PPD,
Fire retardant FR 516,115 DEG C of temperature press 2 minutes；Then white carbon, clay are put into, 115 DEG C of temperature presses 2 minutes；Finally
Silane coupling agent, plasticizer NB-4 are put into, 115 DEG C of temperature is pressed 3 minutes, sent after molding to 22 cun of open mills, tabletting dissipates
Heat；
（3）Rubber master batch is smash to glue on a mill 2 minutes, roll spacing 3mm；Add in cumyl peroxide, roll spacing 3mm；Bao Tongsan times,
Roll spacing 1mm；Beat triangle bag six after bottom sheet, roll spacing 5mm；Roller temperature：Preliminary roller≤60 DEG C, back roller≤60 DEG C；Conditions of vulcanization：Pressure
6kg/cm2, 150 DEG C of temperature, vulcanization time 30 minutes.
Comparative example
A kind of compounded rubber, formula are as follows：
NBR3950F nitrile rubbers：100 parts；White carbon：35 parts；Clay：8 parts；Zinc oxide：2 parts；Polyethylene glycol：0.8 part；Stone
Wax：1 part；Silane coupling agent：1 part；Titanium dioxide：5 parts；Anti-aging agent RD：1.5 part；Fire retardant FR 516：50 parts；Antiozonant NTU：
1.5 part；Antiozonant 6PPD：0.5 part；Plasticizer NB-4：6 parts；Cumyl peroxide：2.5 part；Color masterbatch MP-1005-1：
0.4 part；Color masterbatch MP-1002-1：1.6 part；Color masterbatch MP-100：3 parts.
The preparation method of compounded rubber, its steps are as follows in comparative example：
（1）NBR3950F nitrile rubbers are plasticated by open mill, thin 6 times logical, roll spacing 0.5mm fully plasticates；Then 110
Mixer is put under conditions of DEG C to press again 4 minutes, obtains rubber master batch；
（2）Input zinc oxide, paraffin, titanium dioxide, color masterbatch MP-1005-1, color masterbatch MP-1002-1, color masterbatch MP- after rubber master batch pressing
100,100 DEG C of temperature presses 2 minutes；Put into anti-aging agent RD, antiozonant NTU, antiozonant 6PPD, fire retardant FR 516, temperature
115 DEG C of degree presses 2 minutes；Then white carbon, clay are put into, 115 DEG C of temperature presses 2 minutes；Finally put into silane coupling agent,
Polyethylene glycol, plasticizer NB-4,115 DEG C of temperature are pressed 3 minutes, are sent after molding to 22 cun of open mills, tabletting heat dissipation；
（3）Rubber master batch is smash to glue on a mill 2 minutes, roll spacing 3mm；Add in cumyl peroxide, roll spacing 3mm；Bao Tongsan times,
Roll spacing 1mm；Beat triangle bag six after bottom sheet, roll spacing 5mm；Roller temperature：Preliminary roller≤60 DEG C, back roller≤60 DEG C；Conditions of vulcanization：6kg/
cm2, 150 DEG C of temperature, vulcanization time 30 minutes.
Specific performance compares, and the results are shown in Table 1 and table 2
Table 1
Table 2
Wherein ozone-resistant aging property test includes：It is first placed at 100 DEG C, is kept for 70 hours, it is 52 DEG C to be subsequently placed in temperature, dense
6h in the ozone environment for 600pphm is spent, no cracking is then qualification, and it is then unqualified to have cracking, to embody in different embodiments
The difference of ozone-resistant aging property places sample under these conditions to being cracked, and the testing time is compared.
It can be obtained by 1 data of table, replace part nitrile rubber using polyurethane changes less, and resistance to smelly in physical property
Oxidative aging can on have preferable promotion, polyurethane content is higher, ozone-resistant aging property promoted it is bigger.
It can be obtained by 2 data of table, the addition of processing aid does not cause practical influence, while embody polyurethane content yet
Higher, ozone-resistant aging property is promoted bigger.
Embodiment 12
A kind of compounded rubber preparation method, formula are as follows using embodiment 9：
（1）Milling maternal rubber：
By in Urepan50EL06G and NBR3950F input mixers, pressure floating weight 15 seconds puts into zinc oxide, paraffin, titanium white
Powder, color masterbatch MP-1005-1, color masterbatch MP-1002-1, color masterbatch MP-100, input anti-aging agent RD, antiozonant NTU, antiozonant
Then 6PPD, fire retardant FR 516, pressure floating weight 15 seconds put into white carbon, it is even finally to put into silane to 145 DEG C for pressure floating weight
Join agent, polyethylene glycol, plasticizer NB-4, clay, pressure floating weight to 150 DEG C of dumpings, slice heat dissipation obtains rubber master batch.
（2）Rubber master batch adds sulphur：
Rubber master batch is smash to glue on a mill 60 seconds, roll spacing 3mm；Continue to smash glue 60 seconds, roll spacing 1mm；It is thin 6 times logical, roll spacing 0.5mm；
Add in cumyl peroxide, roll spacing 3mm；It is thin 3 times logical, roll spacing 1mm；Beat triangle bag 6 after bottom sheet, roll spacing 4mm；Roller temperature：Before
Roller≤60 DEG C, back roller≤60 DEG C；
（3）Vulcanization：
Conditions of vulcanization：Pressure 6kg/cm2, 150 DEG C of temperature, vulcanization time 30 minutes.
Embodiment 13
A kind of compounded rubber preparation method, formula are as follows using embodiment 9：
（1）Milling maternal rubber：
By in Urepan50EL06G and NBR3950F input mixers, pressure floating weight 15 seconds puts into zinc oxide, paraffin, titanium white
Powder, color masterbatch MP-1005-1, color masterbatch MP-1002-1, color masterbatch MP-100, input anti-aging agent RD, antiozonant NTU, antiozonant
Then 6PPD, fire retardant FR 516, pressure floating weight 15 seconds put into white carbon, it is even finally to put into silane to 145 DEG C for pressure floating weight
Join agent, polyethylene glycol, plasticizer NB-4, clay, pressure floating weight to 150 DEG C of dumpings, slice heat dissipation obtains rubber master batch.
（2）Rubber master batch adds sulphur：
Rubber master batch is smash to glue on a mill 90 seconds, roll spacing 3mm；Continue to smash glue 90 seconds, roll spacing 1mm；It is thin 8 times logical, roll spacing 0.5mm；
Add in cumyl peroxide, roll spacing 3mm；It is thin 3 times logical, roll spacing 1mm；Beat triangle bag 6 after bottom sheet, roll spacing 4mm；Roller temperature：Before
Roller≤60 DEG C, back roller≤60 DEG C；
（3）Vulcanization：
Conditions of vulcanization：Pressure 6kg/cm2, 150 DEG C of temperature, vulcanization time 30 minutes.
Embodiment 14
A kind of compounded rubber preparation method, formula are as follows using embodiment 9：
（1）Milling maternal rubber
By in Urepan50EL06G and NBR3950F input mixers, pressure floating weight 15 seconds puts into zinc oxide, paraffin, titanium white
Powder, color masterbatch MP-1005-1, color masterbatch MP-1002-1, color masterbatch MP-100, input anti-aging agent RD, antiozonant NTU, antiozonant
Then 6PPD, fire retardant FR 516, pressure floating weight 15 seconds put into white carbon, it is even finally to put into silane to 145 DEG C for pressure floating weight
Join agent, polyethylene glycol, plasticizer NB-4, clay, pressure floating weight to 150 DEG C of dumpings, slice heat dissipation obtains rubber master batch.
（2）Rubber master batch adds sulphur：
Rubber master batch is smash to glue on a mill 120 seconds, roll spacing 3mm；Continue to smash glue 120 seconds, roll spacing 1mm；It is thin 12 times logical, roll spacing
0.5mm；Add in cumyl peroxide, roll spacing 3mm；It is thin 3 times logical, roll spacing 1mm；Beat triangle bag 6 after bottom sheet, roll spacing 4mm；Roller
Temperature：Preliminary roller≤60 DEG C, back roller≤60 DEG C；
（3）Vulcanization：
Conditions of vulcanization：Pressure 6kg/cm2, 150 DEG C of temperature, vulcanization time 30 minutes.
Specific performance compares, and refers to table 3.
Table 3
Can be obtained by 3 data of table, cancel plasticate step and by rubber master batch in open mill not plus the crosslinking agent stage mixing time extend,
To reduce rubber master batch Mooney using open mill so that while compounded rubber obtains close Mooney, reduce processing step, reduce sizing material
Transport improves production efficiency.
Simultaneously as clay forms protection system in compounded rubber, extend rubber master batch and do not add crosslinking agent rank in open mill
The mixing time of section, with low roll spacing it is thin it is logical during, provide the stronger effect of pullling to sizing material so that the stratiform knot of clay
Preferably separation in rubber compound preferably to disperse for structure, so that the protective layer distribution face that clay is formed in compounded rubber
Product is wider, preferably stops that ozone molecule enters in compounded rubber, and then preferably improve the cold resistance and the ozone aging resistance of the diaphragm of compounded rubber
Can, and rubber master batch does not add the mixing time in crosslinking agent stage longer in open mill, it is better to ozone-resistant aging property promotion.
In embodiment 12-14, by high temperature mixing Pintsch process to be utilized to reduce the Mooney of rubber master batch, by 145 DEG C of height
Silane coupling agent, polyethylene glycol, plasticizer NB-4 are added in when warm to cool down to rubber master batch, extends mixing time, passes through clay
It is added in simultaneously with silane coupling agent, polyethylene glycol, plasticizer NB-4, prevents from skidding.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of compounded rubber, it is characterized in that：Raw material including following mass fraction is made, and wherein each component content is with mass parts
Number represents：
20-50 parts of polyurethane
50-80 parts of nitrile rubber
4-8 parts of plasticizer
20-50 parts of white carbon
0.5-3 parts of silane coupling agent
40-60 parts of fire retardant
1.5-4 parts of crosslinking agent.
2. compounded rubber according to claim 1, it is characterized in that：The content of each component is：
30-40 parts of polyurethane
60-70 parts of nitrile rubber
5-7 parts of plasticizer
30-40 parts of white carbon
0.5-1.5 parts of silane coupling agent
45-55 parts of fire retardant
2-3 parts of crosslinking agent.
3. according to any compounded rubber of claims 1 or 2, it is characterized in that：The crosslinking agent is peroxide cross-linking agent.
4. compounded rubber according to claim 3, it is characterized in that：Further include the raw material of following mass fraction：
6-10 parts of clay.
5. compounded rubber according to claim 4, it is characterized in that：Further include the raw material of following mass fraction：
1-3 parts of antiozonant.
6. compounded rubber according to claim 5, it is characterized in that：Further include the raw material of following mass fraction：
1-2 parts of anti-aging agent.
7. compounded rubber according to claim 1, it is characterized in that：The polyurethane is polyether polyurethane.
8. compounded rubber according to claim 1, it is characterized in that：Acrylonitrile content mass percent in the nitrile rubber
For 36%-42%.
9. a kind of preparation method according to any compounded rubbers of claim 6-8, it is characterized in that：Include the following steps：
（1）Milling maternal rubber：
By in polyurethane and nitrile rubber input mixer, then pressure floating weight 10-30 seconds puts into anti-aging agent, antiozonant, resistance
Fire agent, then pressure floating weight 10-30 second puts into white carbon, pressure floating weight to 140 DEG C -145 DEG C, finally input silane coupling agent,
Plasticizer, clay, pressure floating weight to 150 DEG C of -155 DEG C of dumpings；
（2）Rubber master batch adds sulphur：
Rubber master batch after parking is smash into glue 60-120 seconds on a mill, roll spacing 3-4mm continues to smash glue 60-120 seconds, roll spacing 1-
2mm, thin 6-12 times logical, roll spacing 0.5-1mm add in crosslinking agent, and roll spacing 3-4mm, thin 3-5 times logical, roll spacing 1-2mm beats triangle bag
Bottom sheet after 6-8, roll spacing 4-5mm；
（3）Vulcanization：
Conditions of vulcanization：Pressure 6-14kg/cm2, 150 DEG C -170 DEG C of temperature, vulcanization time 10-30 minutes.
10. preparation method according to claim 9, it is characterized in that：Roll spacing is 0.5mm when thin 6-12 times logical in step 2.
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| CN112831175A (en) * | 2021-01-08 | 2021-05-25 | 青岛科技大学 | Wear-resistant and slip-resistant thermoplastic elastomer and preparation method thereof |
| CN112831175B (en) * | 2021-01-08 | 2022-11-04 | 青岛科技大学 | Wear-resistant and slip-resistant thermoplastic elastomer and preparation method thereof |
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