CN108794900A - A kind of ultralight heat resistant rubber composite material and preparation method - Google Patents

A kind of ultralight heat resistant rubber composite material and preparation method Download PDF

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Publication number
CN108794900A
CN108794900A CN201710295226.2A CN201710295226A CN108794900A CN 108794900 A CN108794900 A CN 108794900A CN 201710295226 A CN201710295226 A CN 201710295226A CN 108794900 A CN108794900 A CN 108794900A
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composite material
parts
carbon nanotube
heat resistant
rubber composite
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Inventor
王晓敏
王晶
张新华
李静
张桦
刘浩
刘容德
桂俊杰
苏建华
孙培培
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China Petroleum and Chemical Corp
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China Petroleum and Chemical Corp
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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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • 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
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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
    • C08K2201/004—Additives being defined by their length
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • 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
    • 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

A kind of ultralight heat resistant rubber composite material and preparation method belongs to rubber materials.It is characterized in that：Parts by weight form：40 ~ 50 parts of high vinyl polybutadiene rubber, 50 ~ 60 parts of ethylene propylene diene rubber, be chopped 18 ~ 22 parts of carbon nanotube.Preparation process is：Ball milling is carried out to carbon nanotube, 3 ~ 5 drop absolute ethyl alcohols are added, ball milling obtains the carbon nanotube that is chopped；High vinyl polybutadiene rubber and ethylene propylene diene rubber are plasticated in mixer, the carbon nanotube mixing 170s ~ 190s that is chopped is added after 110s ~ 130s, auxiliary agent mixing is added after continuing mixing；Double roller mill；Bottom sheet is vulcanized again.The present invention is mixed using high vinyl polybutadiene rubber with EPDM, and carbon nanotube reinforcement is added, and it is 0.82 g/cm to prepare density3~0.85g/cm3, linear ablative rate be 0.033 mm/s ~ 0.040mm/s, elongation at break 490% ~ 535% rubber composite material.

Description

A kind of ultralight heat resistant rubber composite material and preparation method
Technical field
A kind of ultralight heat resistant rubber composite material and preparation method belongs to rubber materials.
Background technology
Composite material is tied using chemistry or physical means by two or more mutually independent physics phase Merge the high performance material for showing macroscopical new features.Advanced composite material is as a kind of " southern exposure material " in each industrial circle More and more concerns are obtained for, wherein especially the most notable with aircraft industry.Aircraft industry is the tightest to the design requirement of weight It is careless, it may be said that be " Ke Ke haggles over " that the design of many Aircraft Engineers is all to cut each gram weight and effort.For reality The purpose that existing aircraft mitigates weight, increases payload develops advanced light composite material structure, realize it is structure lightened and Multifunction is problem in science in the urgent need to address.Light composite material is prepared using rubber based elastomers as matrix, is had The advantages that density is low, fracture elongation is high, high temperature resistant ablation.Elastic matrix early period is with nitrile rubber（NBR）Using most, then It develops to and uses the lower ethylene propylene diene rubber of density.And the poor mechanical property of ethylene propylene diene rubber, do not have and stretch orientation, no It can be used alone, in order to obtain excellent mechanical property and high temperature resistant ablation property, it is necessary to add reinforcing agent, vulcanizing agent, promotion The fillers such as agent and fire retardant, and the density of many functional stuffings is all bigger, such as the density of common silica in reinforcing agent About 2.2g/cm3, the density of carbon black is about 1.8g/cm3, and due to containing halogen etc. in fire-retardant filler, density is less than 2.0g/ cm3Kind it is considerably less, therefore reduce density, improve high temperature resistant ablation property and maintain mechanical property approach in there is Certain difficulty.
Invention content
The technical problem to be solved by the present invention is to：Overcome the deficiencies of the prior art and provide that a kind of density is low, linear ablative rate Ultralight heat resistant rubber composite material small, elongation at break is high.
The technical solution adopted by the present invention to solve the technical problems is：The ultralight heat resistant rubber composite material, feature It is：Parts by weight form：40 ~ 50 parts of high vinyl polybutadiene rubber, 50 ~ 60 parts of ethylene propylene diene rubber, chopped carbon is received 18 ~ 22 parts of mitron.
The density of the ethylene propylene diene rubber (EPDM) of selection is 0.83 g/cm3~0.87g/cm3, high vinyl polybutadiene Rubber（HVPBR）Density be 0.8066 g/cm3~0.8100g/cm3.The density of carbon nanotube (CNT) is small and is hollow knot Structure, volume parts in the composite are far longer than carbon black, can improve the stretch modulus and intensity of composite material, very high Fusing point can improve the thermal stability and flame retardant property of composite material.Therefore carbon nanotube can not only be used for high-performance composite materials Reinforcing agent but also as high added value functional material.
The density of the ultralight heat resistant rubber composite material is 0.82g/cm3~0.85g/cm3, linear ablative rate 0.033mm/s ~ 0.040mm/s, elongation at break 490% ~ 535%.
Preferably, the high vinyl polybutadiene rubber medium vinyl content is 75% ~ 85%, Mooney viscosity ML1+4 100℃It is 65 ~ 75.
Preferably, the Third monomer of the ethylene propylene diene rubber is ethylidene norbornene, contents of ethylene 55.0%- 65.0%。
Preferably, the average length of the chopped carbon nanotube is 0.8 μm ~ 1 μm.
A kind of preparation method of above-mentioned ultralight heat resistant rubber composite material, which is characterized in that preparation process is：
1）Ball milling is carried out to carbon nanotube using ball mill, 3 ~ 5 drop absolute ethyl alcohols are added in mechanical milling process and make grinding aid, ball milling obtains To chopped carbon nanotube；
2）High vinyl polybutadiene rubber and ethylene propylene diene rubber are plasticated in mixer, the carbon that is chopped is added after 110s ~ 130s Nanotube mixing 170s ~ 190s, is added 4.5 ~ 5.5 parts of paraffin oils and 2.7 ~ 3.3 parts of coumarone indene resins continue mixing 55s ~ 65s After add auxiliary agent mixing 9.5 ~ 10.5min discharges；45 DEG C ~ 55 DEG C of mixing initial temperature；Double roller mill；After bottom sheet place 24 ~ Vulcanized again after 26 hours to obtain the final product.
The present invention selects that density is lower, the preferable HVPBR of mechanical property is mixed with EPDM, and HVPBR and EPDM are non-pole Property rubber, compatibility is good, need not add compatilizer, and addition carbon nanotube replaces black-reinforced, uses traditional sulfuration process Implemented, it is 0.82 g/cm to prepare density3~0.85g/cm3, linear ablative rate be 0.033 mm/s ~ 0.040mm/s, fracture The rubber composite material of elongation 490% ~ 535%.
Preferably, step 2）Auxiliary agent parts by weight 18 ~ 22 parts of the eight ethylene POSS of composition, 4.6 ~ 5.2 parts of zinc oxide, 1.9 ~ 2.3 parts of stearic acid, 0.8 ~ 1.2 part of anti-aging agent RD, 0.47 ~ 0.53 part of antioxidant BLE, antioxidant MB 0.0.47 ~ 0.53 Part, 1.25 ~ 1.75 parts of sulphur, 0.8 ~ 1.2 part of Vulcanization accelerator TMTD, 0.56 ~ 0.64 part of accelerant CZ.
Preferably, the chopped carbon nanotube mixing first volatilizees ethyl alcohol complete.
Preferably, the carbon nanotube is the multi wall that purity is more than 95%, 10 nm of caliber ~ 20nm, 5 μm ~ 50 μm of length Carbon nanotube.
Preferably, 25 min ~ 35min is stood after in the mechanical milling process per ball milling 55min ~ 65min, ball mill turns Speed is 480 r/min ~ 520r/min, and Ball-milling Time is 4.8h ~ 5.2h.
Preferably, curing temperature is 155 DEG C ~ 165 DEG C, vulcanization time is 42 min ~ 48min, 14.5 MPa of sulfide stress ~ 15.5MPa, preheating and dwell time are 4.5 ~ 5.5 minutes.
Since carbon nanotube has the draw ratio of super large（> 1000）, height, which is tangled, reunites, it is difficult to and dispersion and processing, therefore It needs to carry out the processing of ball milling shortization to carbon nanotube, it can be easy to process with disentanglement.In order to which sizing material is easy to process, improve vulcanization The performance of glue needs that certain plasticising softening agent is added.Invention applies have thermal stability at service temperatures and do not wave Hair property, the higher paraffin oil of flash-point and coumarone indene resin are used in combination.Efficient heat-resisting type anti-aging agent, applies anti-aging agent RD, anti-aging agent BLE and antioxidant MB and with protection system, mutually coordinated effect is heat-resisting.
Compared with prior art, have possessed by a kind of ultralight heat resistant rubber composite material and preparation method of the invention Beneficial effect is：The present invention is mixed using high vinyl polybutadiene rubber with EPDM, and addition carbon nanotube replaces black-reinforced, makes It carries out implementing that HVPBR/EPDM/CNT rubber composites are made with traditional sulfuration process, be carried out using traditional sulfuration process real It applies.It is 0.82 g/cm to prepare density3~0.85g/cm3, linear ablative rate be 0.033 mm/s ~ 0.040mm/s, elongation at break 490% ~ 535% rubber composite material.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described, and wherein embodiment 1 is most preferred embodiment.
The preparation process of embodiment 1 ~ 3 and comparative example 1,2 is：
1）The preparation of the chopped carbon nanotube of ball-milling method：Using high energy oscillating and vibrating ball mill to original carbon nanotubes (multi-walled carbon nanotube, Purity is more than 95%, 10 ~ 20nm of caliber, 5 ~ 50 μm of length) ball milling is carried out, 3 ~ 5 drop absolute ethyl alcohols are added and make grinding aid, per ball milling 30min is stood after 60min, causes temperature is excessively high carbon nano tube structure is caused to destroy to prevent thermal accumlation；Drum's speed of rotation is 500r/min；Ball-milling Time is the chopped carbon nanotube of 5h, is statically placed in air and waits for that ethyl alcohol volatilization is clean；The chopped carbon of ball milling 5h Nanotube（S-CNT）0.8 μm of average length；
2）The preparation of HVPBR/EPDM/CNT：High vinyl polybutadiene rubber is plasticated with ethylene propylene diene rubber in mixer The carbon nanotube mixing 180s that is chopped is added after 120s, auxiliary agent is added after paraffin oil and coumarone indene resin continuation mixing 60s is added Mixing 10min discharges；HVPBR medium vinyls content 80%, Mooney viscosity ML1+4 100℃It is 70；The Third monomer of ethylene propylene diene rubber For ethylidene norbornene（ENB）, contents of ethylene 60%；
3）50 DEG C of the vulcanization process condition mixer initial temperature of rubber composite material, banbury rotating speed 60r/min；Double roller is opened Refining：Temperature is set as 35 DEG C, and mill time 2min, mill goes out the piece of thickness about 2mm；The vulcanization of rubber：It is placed 26 hours after bottom sheet Vulcanized, conditions of vulcanization is 160 DEG C, 45min, and vulcanizing press pressure 15MPa, preheating and dwell time are respectively 5 minutes, intermediate Exhaust 5 times vulcanizes print size：Length × width x thickness=15mm × 15mm × 2mm, 62 grams of rubber compound dosage.
The preparation process of embodiment 4 is：
1）The preparation of the chopped carbon nanotube of ball-milling method：Using high energy oscillating and vibrating ball mill to original carbon nanotubes (multi-walled carbon nanotube, Purity is more than 95%, 10 ~ 20nm of caliber, 5 ~ 50 μm of length) ball milling is carried out, 3 ~ 5 drop absolute ethyl alcohols are added and make grinding aid, per ball milling 25 min are stood after 55min, cause temperature is excessively high carbon nano tube structure is caused to destroy to prevent thermal accumlation；Drum's speed of rotation is 520r/min；Ball-milling Time is the chopped carbon nanotube of 4.8h, is statically placed in air and waits for that ethyl alcohol volatilization is clean；Ball milling 5h's is chopped Carbon nanotube（S-CNT）0.9 μm of average length；
2）The preparation of HVPBR/EPDM/CNT：High vinyl polybutadiene rubber is plasticated with ethylene propylene diene rubber in mixer The carbon nanotube mixing 190s that is chopped is added after 110s, auxiliary agent is added after paraffin oil and coumarone indene resin continuation mixing 55s is added Mixing 10.5min discharges；HVPBR medium vinyls content 75%, Mooney viscosity ML1+4 100℃It is 65；The third list of ethylene propylene diene rubber Body is ethylidene norbornene（ENB）, contents of ethylene 65.0%；
3）50 DEG C of the vulcanization process condition mixer initial temperature of rubber composite material, banbury rotating speed 60r/min；Double roller is opened Refining：Temperature is set as 35 DEG C, and mill time 2min, mill goes out the piece of thickness about 2mm；The vulcanization of rubber：It is placed 25 hours after bottom sheet Being vulcanized, conditions of vulcanization is 165 DEG C, 42min, and vulcanizing press pressure 14.5MPa, preheating and dwell time are respectively 5.5 minutes, Intermediate exhaust 5 times vulcanizes print size：Length × width x thickness=15mm × 15mm × 2mm, 62 grams of rubber compound dosage.
The preparation process of embodiment 5 is：
1）The preparation of the chopped carbon nanotube of ball-milling method：Using high energy oscillating and vibrating ball mill to original carbon nanotubes (multi-walled carbon nanotube, Purity is more than 95%, 10 ~ 20nm of caliber, 5 ~ 50 μm of length) ball milling is carried out, 3 ~ 5 drop absolute ethyl alcohols are added and make grinding aid, per ball milling 25 min ~ 35min is stood after 55min ~ 65min, causes temperature is excessively high carbon nano tube structure is caused to destroy to prevent thermal accumlation； Drum's speed of rotation is 480 r/min ~ 520r/min；Ball-milling Time is the chopped carbon nanotube of 4.8h ~ 5.2h, is statically placed in air In wait for that ethyl alcohol volatilization is clean；The chopped carbon nanotube of ball milling 5h（S-CNT）0.8 μm ~ 1 μm of average length；
2）The preparation of HVPBR/EPDM/CNT：High vinyl polybutadiene rubber is plasticated with ethylene propylene diene rubber in mixer The carbon nanotube mixing 170s that is chopped is added after 130s, auxiliary agent is added after paraffin oil and coumarone indene resin continuation mixing 55s is added Mixing 9.5min discharges；HVPBR medium vinyls content 85%, Mooney viscosity ML1+4 100℃It is 75；The third list of ethylene propylene diene rubber Body is ethylidene norbornene（ENB）, contents of ethylene 55.0%；
3）50 DEG C of the vulcanization process condition mixer initial temperature of rubber composite material, banbury rotating speed 60r/min；Double roller is opened Refining：Temperature is set as 35 DEG C, and mill time 2min, mill goes out the piece of thickness about 2mm；The vulcanization of rubber：It is placed 24 hours after bottom sheet Being vulcanized, conditions of vulcanization is 155 DEG C, 48min, and vulcanizing press pressure 15.5MPa, preheating and dwell time are respectively 4.5 minutes, Intermediate exhaust 5 times vulcanizes print size：Length × width x thickness=15mm × 15mm × 2mm, 62 grams of rubber compound dosage.
The preparation process of comparative example 3 is：
1）The preparation of the chopped carbon nanotube of ball-milling method：Using high energy oscillating and vibrating ball mill to original carbon nanotubes (multi-walled carbon nanotube, Purity is more than 95%, 10 ~ 20nm of caliber, 5 ~ 50 μm of length) ball milling is carried out, 3 ~ 5 drop absolute ethyl alcohols are added and make grinding aid, per ball milling 30min is stood after 60min, causes temperature is excessively high carbon nano tube structure is caused to destroy to prevent thermal accumlation；Drum's speed of rotation is 500r/min；Ball-milling Time is the chopped carbon nanotube of 10h, is statically placed in air and waits for that ethyl alcohol volatilization is clean；Ball milling 10h's is chopped Carbon nanotube（S-CNT）Average length 600nm；
2）The preparation of HVPBR/EPDM/CNT：High vinyl polybutadiene rubber is plasticated with ethylene propylene diene rubber in mixer The carbon nanotube mixing 180s that is chopped is added after 120s, auxiliary agent is added after paraffin oil and coumarone indene resin continuation mixing 60s is added Mixing 10min discharges；HVPBR medium vinyls content 80%, Mooney viscosity ML1+4 100℃It is 70；The Third monomer of ethylene propylene diene rubber For ethylidene norbornene（ENB）, contents of ethylene 60%；
3）50 DEG C of the vulcanization process condition mixer initial temperature of rubber composite material, banbury rotating speed 60r/min；Double roller is opened Refining：Temperature is set as 35 DEG C, and mill time 2min, mill goes out the piece of thickness about 2mm；The vulcanization of rubber：It is placed 24 hours after bottom sheet Being vulcanized above, conditions of vulcanization is 160 DEG C, 45min, and vulcanizing press pressure 15MPa, preheating and dwell time are respectively 5 minutes, Intermediate exhaust 5 times vulcanizes print size：Length × width x thickness=15mm × 15mm × 2mm, 62 grams of rubber compound dosage.
The preparation process of comparative example 4 is：
1）The preparation of the chopped carbon nanotube of ball-milling method：Using high energy oscillating and vibrating ball mill to original carbon nanotubes (multi-walled carbon nanotube, Purity is more than 95%, 10 ~ 20nm of caliber, 5 ~ 50 μm of length) ball milling is carried out, 3 ~ 5 drop absolute ethyl alcohols are added and make grinding aid, per ball milling 30min is stood after 60min, causes temperature is excessively high carbon nano tube structure is caused to destroy to prevent thermal accumlation；Drum's speed of rotation is 500r/min；Ball-milling Time is the chopped carbon nanotube of 5h, is statically placed in air and waits for that ethyl alcohol volatilization is clean；The chopped carbon of ball milling 5h Nanotube（S-CNT）0.8 μm of average length；
2）The preparation of HVPBR/EPDM/CNT：By high vinyl polybutadiene rubber, ethylene propylene diene rubber and chopped carbon nanotube Paraffin oil, coumarone indene resin and auxiliary agent mixing 11min discharges is added in the mixing 5min in mixer；HVPBR medium vinyls contain Amount 60%, Mooney viscosity ML1+4 100℃It is 55；The Third monomer of ethylene propylene diene rubber is ethylidene norbornene（ENB）, vinyl contains Amount is 75%；
3）50 DEG C of the vulcanization process condition mixer initial temperature of rubber composite material, banbury rotating speed 60r/min；Double roller is opened Refining：Temperature is set as 35 DEG C, and mill time 2min, mill goes out the piece of thickness about 2mm；The vulcanization of rubber：It is placed 24 hours after bottom sheet Being vulcanized above, conditions of vulcanization is 160 DEG C, 45min, and vulcanizing press pressure 15MPa, preheating and dwell time are respectively 5 minutes, Intermediate exhaust 5 times vulcanizes print size：Length × width x thickness=15mm × 15mm × 2mm, 62 grams of rubber compound dosage.
It is shown in Table 1 in embodiment, weight of material part proportioning of comparative example.
1 embodiment of table, weight of material part proportioning of comparative example（Part）
。
The performance test results of composite material obtained by embodiment and comparative example are shown in Table 2.
Composite property obtained by 1 embodiment and comparative example of table
Density is 0.82 g/cm3~0.85g/cm3, linear ablative rate be 0.033 mm/s ~ 0.040mm/s, elongation at break 490% ~535%
。
It is 0.82 from can be seen that the density of composite material in embodiment in the project testing table of embodiment and comparative example g/cm3~0.85g/cm3, linear ablative rate be 0.033 mm/s ~ 0.040mm/s, elongation at break 490% ~ 535%, properties are bright It is aobvious to be better than comparative example.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc. Imitate embodiment.But it is every without departing from technical solution of the present invention content, according to the technical essence of the invention to above example institute Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.

Claims (10)

1. a kind of ultralight heat resistant rubber composite material, it is characterised in that：Parts by weight form：High vinyl polybutadiene rubber 40 ~ 50 parts, 50 ~ 60 parts of ethylene propylene diene rubber, be chopped 18 ~ 22 parts of carbon nanotube.
2. a kind of ultralight heat resistant rubber composite material according to claim 1, it is characterised in that：Density is 0.82 g/cm3~ 0.85g/cm3, linear ablative rate be 0.033 mm/s ~ 0.040mm/s, elongation at break 490% ~ 535%.
3. a kind of ultralight heat resistant rubber composite material according to claim 1, it is characterised in that：The high-vinyl is poly- Butadiene rubber medium vinyl content is 75% ~ 85%, Mooney viscosity ML1+4 100℃It is 65 ~ 75.
4. a kind of ultralight heat resistant rubber composite material according to claim 1, it is characterised in that：The ethylene-propylene-diene monomer The Third monomer of glue is ethylidene norbornene, contents of ethylene 55.0%-65.0%.
5. a kind of ultralight heat resistant rubber composite material according to claim 1, it is characterised in that：The chopped carbon nanotube Average length be 0.8 μm ~ 1 μm.
6. a kind of preparation method of the ultralight heat resistant rubber composite material of claim 1 ~ 5 any one of them, which is characterized in that system It is for step：
1）Ball milling is carried out to carbon nanotube using ball mill, 3 ~ 5 drop absolute ethyl alcohols are added in mechanical milling process and make grinding aid, ball milling obtains To chopped carbon nanotube；
2）High vinyl polybutadiene rubber and ethylene propylene diene rubber are plasticated in mixer, the carbon that is chopped is added after 110s ~ 130s Nanotube mixing 170s ~ 190s, is added 4.5 ~ 5.5 parts of paraffin oils and 2.7 ~ 3.3 parts of coumarone indene resins continue mixing 55s ~ 65s After add auxiliary agent mixing 9.5 ~ 10.5min discharges；45 DEG C ~ 55 DEG C of mixing initial temperature；Double roller mill；After bottom sheet place 24 ~ Vulcanized again after 26 hours to obtain the final product.
7. the preparation method of ultralight heat resistant rubber composite material according to claim 6, it is characterised in that：Step 2）It is described Auxiliary agent parts by weight form 18 ~ 22 parts of eight ethylene POSS, 4.6 ~ 5.2 parts of zinc oxide, 1.9 ~ 2.3 parts of stearic acid, anti-aging agent RD 0.8 ~ 1.2 part, 0.47 ~ 0.53 part of antioxidant BLE, antioxidant MB 0.0.47 ~ 0.53 part, 1.25 ~ 1.75 parts of sulphur, promotion 0.8 ~ 1.2 part of agent TMTD, 0.56 ~ 0.64 part of accelerant CZ.
8. the preparation method of ultralight heat resistant rubber composite material according to claim 6, it is characterised in that：Described is chopped First ethyl alcohol is volatilized before carbon nanotube mixing complete.
9. the preparation method of ultralight heat resistant rubber composite material according to claim 6, it is characterised in that：The carbon is received Mitron is the multi-walled carbon nanotube that purity is more than 95%, 10 nm of caliber ~ 20nm, 5 μm ~ 50 μm of length.
10. the preparation method of ultralight heat resistant rubber composite material according to claim 6, it is characterised in that：The ball 25 min ~ 35min is stood during mill after every ball milling 55min ~ 65min, drum's speed of rotation is 480 r/min ~ 520r/ Min, Ball-milling Time are 4.8h ~ 5.2h.
CN201710295226.2A 2017-04-28 2017-04-28 A kind of ultralight heat resistant rubber composite material and preparation method Pending CN108794900A (en)

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