CN110041633A - Natural rubber and preparation method thereof - Google Patents
Natural rubber and preparation method thereof Download PDFInfo
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- CN110041633A CN110041633A CN201910382590.1A CN201910382590A CN110041633A CN 110041633 A CN110041633 A CN 110041633A CN 201910382590 A CN201910382590 A CN 201910382590A CN 110041633 A CN110041633 A CN 110041633A
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- natural rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
- B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2323/32—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with phosphorus- or sulfur-containing compounds
- C08J2323/34—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with phosphorus- or sulfur-containing compounds by chlorosulfonation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2407/00—Characterised by the use of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
Abstract
The present invention relates to rubber materials to provide a kind of natural rubber, the component including following mass fraction for the problem of the weatherability difference of natural rubber: 20-28 parts of calcium carbonate；35-45 parts of CSM rubber；4-10 parts of 3L glue；10-15 parts of naphthenic oil；5-10 parts of carbon black N220；0.2-0.5 parts of antioxidant 4020；3-10 parts of foaming agent；DM1.5-6 parts of rubber accelerator；0.6-1.2 parts of cross-linking aid；0.2-0.8 parts of crosslink agent DCP.A kind of preparation method of natural rubber, comprising the following steps: S1, divide glue；S2, mixed glue；S3, a mill；S4, mixing；S5, secondary mill；S6, one step foaming；S7, second time of foaming.It is uniformly mixed by the usage ratio cooperation of control CSM rubber, 3L glue, carbon black and rubber accelerator DM and by first taking out the sheet of epoxy glue addition rubber accelerator DM of 8%-12% extruding, be conducive to each component mixing to be uniformly dispersed, be conducive to natural rubber it is abundant foaming and it is full cross-linked, so that the foam cell uniformity of natural rubber is higher, be conducive to the weatherability for improving natural rubber.
Description
Technical field
The present invention relates to rubber materials, more specifically, it relates to a kind of natural rubber and preparation method thereof.
Background technique
Natural rubber has high tensile and high tear performance, and compression resilience is good, has been widely used for wrapping
Fill the multiple fields such as sealing strip, automobile, aerospace and machine-building.
But natural rubber is easy in the destruction by the natural causes such as illumination, cold and hot, wind and rain, bacterium because being crosslinked firmly
Change and be cracked, degrade so that the easy aging of natural rubber so that the tensile strength and resilience of natural rubber it is easy by
It to influence, or even is easy to have an impact the normal operation of automobile and machinery, therefore, improves the weather resistance pole of natural rubber
It is important.
Summary of the invention
In view of the deficienciess of the prior art, the first object of the present invention is to provide a kind of natural rubber, there is enhancing
The advantages of weatherability of natural rubber.
To achieve the above object, the present invention provides the following technical scheme that
A kind of natural rubber, the component including following mass fraction:
20-28 parts of calcium carbonate；
35-45 parts of CSM rubber；
4-10 parts of 3L glue；
10-15 parts of naphthenic oil；
5-10 parts of carbon black N220；
0.2-0.5 parts of antioxidant 4020；
3-10 parts of foaming agent；
DM1.5-6 parts of rubber accelerator；
0.6-1.2 parts of cross-linking aid；
0.2-0.8 parts of crosslink agent DCP.
By adopting the above technical scheme, pass through the dosage of control CSM rubber, 3L glue, carbon black N220 and rubber accelerator DM
Ratio cooperation, is conducive to the full cure of natural rubber, while being conducive to enhance natural tensile strength and tearing toughness,
Meanwhile the antioxidant 4020 by cooperating certain proportion dosage, be conducive to the weather resistance for enhancing natural rubber, so that natural rubber
Glue is not readily susceptible to the influences of natural causes such as illumination, cold and hot, wind and rain and bacterium and generates shadow to tensile strength and resilience
It rings, is conducive to the weatherability for improving natural rubber, so that the service life of natural rubber extends；In addition, passing through control CSM rubber
Glue, 3L glue and foaming agent, crosslinking agent and cross-linking aid usage ratio cooperate, be conducive to natural rubber it is abundant foam and
It is full cross-linked, to be conducive to improve the foam cell uniformity of natural rubber, so that the tensile strength and resilience of natural rubber
It is not readily susceptible to influence, meanwhile, so that natural rubber is not readily susceptible to the natural causes such as illumination, cold and hot, wind and rain and bacterium
It influences, so that the service life of natural rubber extends.
The present invention is further arranged to: the foaming agent is azodicarbonamide.
By adopting the above technical scheme, be conducive to the abundant of natural rubber as foaming agent by using azodicarbonamide
Foaming, so that the foam cell uniformity of natural rubber improves, to be conducive to improve the weather resistance of natural rubber, so that natural rubber
Glue is not readily susceptible to the influence of the natural causes such as illumination, cold and hot, wind and rain and bacterium, and be conducive to extend natural rubber uses the longevity
Life；Meanwhile the fusing point of azodicarbonamide is higher, so that azodicarbonamide is not easy to decompose in advance, is conducive to natural rubber
Abundant foaming while making the weatherability of natural rubber higher to be conducive to improve the foam cell uniformity of natural rubber, make
The tensile strength and tearing toughness that obtain natural rubber are not readily susceptible to the influence of natural cause.
The present invention is further arranged to: the cross-linking aid is zinc oxide.
By adopting the above technical scheme, the decomposition temperature of foaming agent is advantageously reduced as cross-linking aid by using zinc oxide
Degree, so that the foaming for being conducive to natural rubber is more full and uniform, is conducive to improve natural so that the foaming of foaming agent is initiated
The foam cell uniformity of rubber, at the same make the tensile strength of natural rubber and tearing toughness be not readily susceptible to illumination, it is cold and hot,
The influence of the natural causes such as wind and rain and bacterium is conducive to the weatherability for improving natural rubber, is conducive to extend natural rubber
Service life.
In view of the deficienciess of the prior art, the second object of the present invention is to provide a kind of preparation side of natural rubber
Method has the advantages that improve the weatherability for preparing resulting natural rubber.
To achieve the above object, the present invention provides the following technical scheme that
A kind of preparation method of natural rubber, comprising the following steps:
S1, divide glue: 3L glue being stirred and is crushed, and smashed 3L glue mill will be stirred and squeezed in flakes；
S2, mixed glue: the stirring of CSM rubber is broken, and S1 mill is added in stirring broken CSM rubber and squeezes in flakes
3L glue, carbon black N220, calcium carbonate, naphthenic oil, antioxidant 4020, cross-linking aid, crosslink agent DCP, controlled at 75 DEG C-
It 125 DEG C, stirs evenly to form epoxy glue and discharge；
S3, a mill: the epoxy glue in S2 being squeezed in flakes, and the sheet of epoxy glue of extruding for taking out 8%-12%,
Rubber accelerator DM is added into the sheet of epoxy glue of extruding taken out, stirs evenly to form mixture and cooling；
S4, mixing: mixing is remaining to squeeze sheet of epoxy glue, and control smelting temperature is 40 DEG C -80 DEG C, and foaming is added
The mixture formed in agent and S3, stirs evenly to form blank and discharge；
S5, secondary mill: the blank in S4 is squeezed in flakes, plate is formed；
S6, one step foaming: plate is added in mold and carries out one-step mould foaming, obtains foaming body；
S7, second time of foaming: taking out foaming body and adds progress secondary mould pressing foaming in mold, and finished product is taken out in die sinking, i.e.,
Obtain natural rubber.
By adopting the above technical scheme, by crosslink agent DCP and cross-linking aid being added first to form epoxy glue, be conducive to day
So rubber is full cross-linked；It is stirred by first taking out the sheet of epoxy glue of 8%-12% extruding and rubber accelerator DM being added
Uniformly, the 8%-12% epoxy glue being uniformly mixed then by foaming agent and with rubber accelerator DM mixes with remaining epoxy glue
It is even, be conducive to rubber accelerator DM and foaming agent spreads more evenly across in mixture, to be conducive to filling for natural rubber
Point vulcanization and sufficiently foaming so that the foam cell uniformity of natural rubber is higher, while make the tensile strength of natural rubber with
And tearing toughness is more not readily susceptible to the influence of the natural causes such as illumination, cold and hot, wind and rain and bacterium, is conducive to improve day
The weatherability of right rubber, so that the service life of natural rubber extends；By mill natural rubber twice, be conducive to improve natural
The compactness of rubber, so that it is not easy that there are abscesses in natural rubber before foaming, meanwhile, by being carried out twice to natural rubber
Foaming, so that preparing the abscess for being not easy to be conducive to there are non-uniform hole to improve natural rubber in resulting natural rubber
The uniformity, so that the tensile strength of natural rubber and tearing toughness are more not readily susceptible to illumination, cold and hot, wind and rain and thin
The influence of the natural causes such as bacterium is conducive to the weatherability for improving natural rubber.
The present invention is further arranged to: the step S2 is carried out in closed environment.
By adopting the above technical scheme, it is carried out in closed environment by step S2, so that extraneous dust and work people
The sweat of member is not easy to be mixed into internal mixing pass into epoxy glue, so that being not easy that there are non-uniform holes in epoxy glue
Hole, is conducive to improve and prepare the foam cell uniformity of resulting natural rubber, so that the tensile strength of natural rubber and resisting
Tearing strength is not readily susceptible to the influence of the natural causes such as illumination, cold and hot, wind and rain and bacterium, is conducive to improve natural rubber
Weatherability, so that the service life of natural rubber extends.
The present invention is further arranged to: in the step S2, S1 mill is added and squeezes sheet of 3L glue, carbon black N220, carbon
After sour calcium, naphthenic oil, antioxidant 4020, cross-linking aid and crosslink agent DCP, temperature is gradually risen, when temperature is up to 80 DEG C -85 DEG C
Afterwards, temperature is every increases 3 DEG C -5 DEG C, and stirring overturning mixed once material carries out epoxy glue discharging after temperature is up to 120 DEG C -125 DEG C
Operation.
By adopting the above technical scheme, 3 DEG C -5 DEG C are increased by the way that after temperature is up to 80 DEG C -85 DEG C, temperature is every, stirring overturning one
Secondary mixture, each component for being conducive to natural rubber are sufficiently mixed uniformly, so that the crosslinking for being conducive to epoxy glue is more abundant, make
The abscess for obtaining natural rubber is more uniform, while being conducive to improve the weather resistance of natural rubber, so that the stretching of natural rubber
Intensity and tearing toughness are not readily susceptible to the influence of the factors such as illumination, cold and hot, wind and rain and bacterium, are conducive to extend natural
The service life of rubber.
The present invention is further arranged to: in the step S4, gradually rising the remaining mixing for squeezing sheet of epoxy glue
The mixture formed in foaming agent and S3 is added when temperature is up to 70 DEG C -80 DEG C in temperature.
By adopting the above technical scheme, by the way that the mixing formed in foaming agent and S3 is added when temperature is up to 70 DEG C -80 DEG C
Material, so that foaming agent is not easy to decompose in advance, to be conducive to the abundant foaming of natural rubber, so that preparing resulting natural rubber
The weatherability of glue enhances so that the tensile strength of natural rubber and tearing toughness be not readily susceptible to illumination, cold and hot, wind and rain with
And the influence of the natural causes such as bacterium, it is conducive to extend the service life of natural rubber.
The present invention is further arranged to: in the step S4, after the mixture formed in foaming agent and S3 is added, and temperature
Every to increase 3 DEG C -5 DEG C, a stirring blank of overturning carries out blank draw operation when temperature is up to 95 DEG C -105 DEG C.
By adopting the above technical scheme, after by the way that the mixture formed in foaming agent and S3 is added, temperature is every to increase 3 DEG C -5
DEG C, a stirring blank of overturning, the rubber accelerator DM be conducive in foaming agent and mixture is spreaded more evenly across in blank
In, to be conducive to the abundant foaming and full cure of natural rubber, and then is conducive to improve and prepares resulting natural rubber
Weatherability so that the tensile strength of natural rubber and tearing toughness are not readily susceptible to illumination, cold and hot, wind and rain and bacterium
Etc. natural causes influence, be conducive to extend the service life of natural rubber.
The present invention is further arranged to: in the step S6, the temperature for controlling one step foaming is 140 DEG C -150 DEG C, control
The time of one step foaming is 30min-40min.
By adopting the above technical scheme, by controlling the temperature and time of one step foaming, be conducive to the abundant hair of natural rubber
Bubble to be conducive to improve the foam cell uniformity for preparing resulting natural rubber, while enhances the weatherability of natural rubber.
The present invention is further arranged to: in the step S7, the temperature for controlling second time of foaming is 160 DEG C -170 DEG C, control
The time of second time of foaming is 30min-40min.
By adopting the above technical scheme, by controlling the temperature and time of second time of foaming, be conducive to the abundant hair of natural rubber
Bubble, so that the foam cell uniformity for preparing resulting natural rubber improves, while being conducive to improve the weatherability of natural rubber,
So that the stretching intensity and tearing toughness of natural rubber are not readily susceptible to the nature such as illumination, cold and hot, wind and rain and bacterium
The influence of factor is conducive to extend the service life of natural rubber.
In conclusion the invention has the following advantages:
1. being conducive to by the usage ratio cooperation of control CSM rubber, 3L glue, carbon black N220 and rubber accelerator DM
Enhance natural tensile strength and tearing toughness, meanwhile, by cooperating the antioxidant 4020 of certain proportion dosage, be conducive to
The weather resistance for enhancing natural rubber, so that the service life of natural rubber extends；
2. being cooperated by the usage ratio of control CSM rubber, 3L glue and foaming agent, crosslinking agent and cross-linking aid, favorably
In the foam cell uniformity for improving natural rubber, so that the tensile strength and resilience of natural rubber are not readily susceptible to influence, together
When, be conducive to the weatherability for improving natural rubber；
3. it is uniformly mixed by first taking out the sheet of epoxy glue of 8%-12% extruding and rubber accelerator DM being added, then
The 8%-12% epoxy glue being uniformly mixed by foaming agent and with rubber accelerator DM is uniformly mixed with remaining epoxy glue, favorably
It is spreaded more evenly across in mixture in rubber accelerator DM and foaming agent, so that the foam cell uniformity of natural rubber is higher,
Be conducive to improve the weatherability of natural rubber；
4. being conducive to the compactness for improving natural rubber by mill natural rubber twice, so that sending out in natural rubber
It is not easy that there are abscesses before bubble, meanwhile, by being foamed twice to natural rubber, so that preparing in resulting natural rubber not
It is easy the foam cell uniformity for being conducive to improve natural rubber there are non-uniform hole, is conducive to improve the weather-proof of natural rubber
Property.
Specific embodiment
With reference to embodiments, invention is further described in detail.
In following embodiment, CSM rubber uses the CSM rubber of 40 type of model of Ningbo Jia Ju new material Co., Ltd.
In following embodiment, 3L glue uses the 3L glue of the model STRXL of Jinan Xiang Tai Chemical Co., Ltd..
In following embodiment, naphthenic oil uses the cycloalkanes of the model KN4010 of Suzhou Sai Pahan specialty oil Co., Ltd
Oil 10#。
In following embodiment, carbon black N220 uses the carbon black of the model N220 of hundred million Bo Rui Chemical Co., Ltd. of Tianjin.
In following embodiment, rubber accelerator DM uses the rubber accelerator DM-80 of Dongguan City Jun Bo footwear material Co., Ltd
It is mixed with the rubber accelerator M-80 of Wenzhou Gray Chemical Co., Ltd. with the ratio of 1:1.
Embodiment 1
A kind of natural rubber, the component including following mass fraction:
Calcium carbonate 20kg；CSM rubber 45kg；3L glue 5kg；Naphthenic oil 11kg；Carbon black N220 8kg；Antioxidant 4020
0.2kg；Foaming agent 5kg；Rubber accelerator DM4kg；Cross-linking aid 1.2kg；Crosslink agent DCP 0.2kg.
In the present embodiment, foaming agent is the H foaming agent purchased from the industrial Science and Technology Ltd. of Shenzhen's marine origin.
In the present embodiment, crosslinking agent aid is silica.
Natural rubber the preparation method is as follows:
S1, divide glue, specific as follows:
5kg3L glue is added in mixer, stirring crushes, and will stir smashed 3L glue and pour into two rollers of open mill
It squeezes in blocks.
S2, mixed glue, specific as follows:
45kgCSM rubber is added in mixer, stirring is broken, and S1 mill is added in the broken CSM rubber of stirring
Sheet of 3L glue 5kg is squeezed, carbon black N220 8kg, calcium carbonate 20kg, naphthenic oil 11kg, antioxidant 4020 0.2kg, is crosslinked and helps
Agent 1.2kg, crosslink agent DCP 0.2kg, control smelting temperature are 75 DEG C, after being uniformly mixed, and form epoxy glue, and gone out
Material operation.
S3, a mill, specific as follows:
The epoxy glue formed in S2 is added in two rollers of open mill and is squeezed in flakes, and the extruding of taking-up 8% is sheet of mixed
Glue is closed, i.e. taking-up 7.25kg epoxy glue, rubber accelerator DM4kg is added into 7.25kg epoxy glue, is uniformly mixed to be formed
After mixture, draw operation is carried out.
S4, mixing, specific as follows:
Remaining 83.35kg epoxy glue is poured into mixer, control smelting temperature is 40 DEG C, increases temperature while stirring
Mixture 11.25kg, the foaming agent being uniformly mixed with rubber accelerator DM in S3 is added when temperature is up to 65 DEG C in degree
5kg is uniformly mixed after forming blank, carries out draw operation.
S5, secondary mill, specific as follows:
The blank formed in S4 is added in two rollers of open mill, squeezes in flakes, form plate.
S6, one step foaming, specific as follows:
Plate is put into the mold of foaming oil-pressure machine and is foamed, control blowing temperature is 135 DEG C, controls foamed time
For 45min, after the completion of foaming, it is opened and cooling, obtains foaming body.
S7, second time of foaming, specific as follows:
Foaming body is put into the mold of second time of foaming machine and carries out second time of foaming, control blowing temperature is 155 DEG C, control hair
The bubble time is 45min, after the completion of foaming, is opened and cooling, takes out finished product up to natural rubber.
Embodiment 2
A kind of natural rubber, the component including following mass fraction:
Calcium carbonate 25kg；CSM rubber 40kg；3L glue 9kg；Naphthenic oil 14kg；Carbon black N220 5kg；Antioxidant 4020
0.4kg；Foaming agent 10kg；Rubber accelerator DM1.5kg；Cross-linking aid 1kg；Crosslink agent DCP 0.4kg.
In the present embodiment, foaming agent is the H foaming agent purchased from the industrial Science and Technology Ltd. of Shenzhen's marine origin.
In the present embodiment, crosslinking agent aid is silica.
Natural rubber the preparation method is as follows:
S1, divide glue, specific as follows:
9kg3L glue is added in mixer, stirring crushes, and will stir smashed 3L glue and pour into two rollers of open mill
It squeezes in blocks.
S2, mixed glue, specific as follows:
40kgCSM rubber is added in mixer, stirring is broken, and S1 mill is added in the broken CSM rubber of stirring
Sheet of 3L glue 9kg is squeezed, carbon black N220 5kg, calcium carbonate 25kg, naphthenic oil 14kg, antioxidant 4020 0.4kg, is crosslinked and helps
Agent 1kg, crosslink agent DCP 0.4kg, control smelting temperature are 125 DEG C, after being uniformly mixed, and form epoxy glue, and discharge
Operation.
S3, a mill, specific as follows:
The epoxy glue formed in S2 is added in two rollers of open mill and is squeezed in flakes, and the extruding of taking-up 12% is sheet of mixed
Glue is closed, i.e. taking-up 11.3kg epoxy glue, rubber accelerator DM1.5kg is added into 11.3kg epoxy glue, is uniformly mixed shape
After mixture, draw operation is carried out.
S4, mixing, specific as follows:
Remaining 83.5kg epoxy glue to be poured into mixer, control smelting temperature is 80 DEG C, temperature is increased while stirring,
When temperature is up to 90 DEG C, 12.8kg mixture, the foaming agent 10kg being uniformly mixed with rubber accelerator DM in S3 is added,
It is uniformly mixed after forming blank, carries out draw operation.
S5, secondary mill, specific as follows:
The blank formed in S4 is added in two rollers of open mill, squeezes in flakes, form plate.
S6, one step foaming, specific as follows:
Plate is put into the mold of foaming oil-pressure machine and is foamed, control blowing temperature is 155 DEG C, controls foamed time
For 25min, after the completion of foaming, it is opened and cooling, obtains foaming body.
S7, second time of foaming, specific as follows:
Foaming body is put into the mold of second time of foaming machine and carries out second time of foaming, control blowing temperature is 175 DEG C, control hair
The bubble time is 25min, after the completion of foaming, is opened and cooling, takes out finished product up to natural rubber.
Embodiment 3
A kind of natural rubber, the component including following mass fraction:
Calcium carbonate 28kg；CSM rubber 35kg；3L glue 4kg；Naphthenic oil 15kg；Carbon black N220 10kg；Antioxidant 4020
0.3kg；Foaming agent 3kg；Rubber accelerator DM6kg；Cross-linking aid 0.9kg；Crosslink agent DCP 0.6kg.
In the present embodiment, foaming agent is the azo dimethyl that the article No. purchased from Jiangsu Suo Pu Chemical Co., Ltd. is DN10
Amide.
In the present embodiment, cross-linking aid is zinc oxide.
Natural rubber the preparation method is as follows:
S1, divide glue, specific as follows:
4kg3L glue is added in mixer, stirring crushes, and two rollers that will stir smashed 3L glue and pour into open mill
In, control roll spacing is 2mm, is squeezed in blocks.
S2, mixed glue, specific as follows:
35kgCSM rubber is added in mixer, stirring is broken, and S1 mill is added in the broken CSM rubber of stirring
Sheet of 3L glue 4kg is squeezed, carbon black N220 10kg, calcium carbonate 28kg, naphthenic oil 15kg, antioxidant 4020 0.3kg, is crosslinked and helps
Agent 0.9kg, crosslink agent DCP 0.6kg form epoxy glue, allow mixer to dally 50s, then push pressurization lid, so that pressurization lid and mixed
It closes glue to abut, is stirred, gradually rises smelting temperature, when temperature is up to 80 DEG C, pressurization cover is lifted, so that pressurization lid
Closing and does not contact feed inlet with epoxy glue, after pressurization lid periphery is cleaned up, then covers pressurization lid, so that pressurization lid and mixed
Material contact is closed, continues to stir.Hereafter, temperature is every increases 3 DEG C, first lifts pressurization cover, and pressurization lid periphery is cleared up and is done
Only, then by pressurization lid lift completely, stirring overturning mixed once glue then pushes pressurization lid, and continue to stir again, works as temperature
When being increased to 120 DEG C, epoxy glue is discharged.
S3, a mill, specific as follows:
The epoxy glue formed in S2 is added in two rollers of open mill, control roll spacing is 2mm, is squeezed in flakes, then will squeeze
Sheet of epoxy glue is thrown to again in two rollers of open mill, and control roll spacing is 10mm, and slice is stand-by.
The 8% sheet of epoxy glue of extruding is taken out, i.e. taking-up 7.72kg epoxy glue, rubber is added into 7.72kg epoxy glue
Altax 6kg, and temperature is gradually risen, it is uniformly mixed after forming mixture, carries out draw operation.
S4, mixing, specific as follows:
The temperature that remaining 88.78kg epoxy glue is poured into mixer, and controls mixer is 40 DEG C, pushes pressurization
Lid, increases temperature while stirring, when temperature is up to 70 DEG C, partially lifts pressurization lid, pressurization lid periphery is cleaned out, then completely
Lift pressurization lid, 13.72kg mixture, the foaming agent 3kg being uniformly mixed with rubber accelerator DM in S3 is added.It is formed
Blank allows mixer to dally after 30s, then pushes pressurization lid, continue to stir.Hereafter, temperature is every increases 4 DEG C, and will first pressurize cover
Divide and lift, and pressurization lid periphery is cleaned out, then pressurization lid is lifted completely, stirring overturning is primary, then pushes and adds again
Gland, and continue to stir, when temperature is increased to 95 DEG C, blank is discharged.
S5, secondary mill, specific as follows:
The blank that S4 is formed is added in two rollers of the open mill that roller diameter is 18 cun, and control roll spacing is 1.5mm, Bao Tong 3
Secondary and extruding in flakes, then will squeeze sheet of blank and put into two rollers of the open mill that roller diameter is 16 cun, and control roll spacing is
10mm, repeatedly in roll-in to blank without obvious bubble and spot after, form plate piece, and weigh according to actual needs.
S6, one step foaming, specific as follows:
Plate after weighing is put into the mold of foaming oil-pressure machine and is foamed, control blowing temperature is 140 DEG C, control
Foamed time is 40min, after the completion of foaming, is opened and cooling, obtains foaming body.
S7, second time of foaming, specific as follows:
Foaming body is put into the mold of second time of foaming machine and carries out second time of foaming, control blowing temperature is 160 DEG C, control hair
The bubble time is 40min, after the completion of foaming, is opened and cooling, takes out finished product up to natural rubber.
Embodiment 4
A kind of natural rubber, the component including following mass fraction:
Calcium carbonate 24kg；CSM rubber 38kg；3L glue 7kg；Naphthenic oil 12kg；Carbon black N220 6kg；Antioxidant 4020
0.5kg；Foaming agent 6kg；Rubber accelerator DM3kg；Cross-linking aid 0.8kg；Crosslink agent DCP 0.8kg.
In the present embodiment, foaming agent is the azo dimethyl that the article No. purchased from Jiangsu Suo Pu Chemical Co., Ltd. is DN10
Amide.
In the present embodiment, cross-linking aid is zinc oxide.
Natural rubber the preparation method is as follows:
S1, divide glue, specific as follows:
7kg3L glue is added in mixer, stirring crushes, and two rollers that will stir smashed 3L glue and pour into open mill
In, control roll spacing is 2mm, is squeezed in blocks.
S2, mixed glue, specific as follows:
38kgCSM rubber is added in mixer, stirring is broken, and S1 mill is added in the broken CSM rubber of stirring
Sheet of 3L glue 7kg is squeezed, carbon black N220 6kg, calcium carbonate 24kg, naphthenic oil 12kg, antioxidant 4020 0.5kg, is crosslinked and helps
Agent 0.8kg, crosslink agent DCP 0.8kg form epoxy glue, allow mixer to dally 60s, then push pressurization lid, so that pressurization lid and mixed
It closes glue to abut, is stirred, gradually rises smelting temperature, when temperature is up to 83 DEG C, pressurization cover is lifted, so that pressurization lid
Closing and does not contact feed inlet with epoxy glue, after pressurization lid periphery is cleaned up, then covers pressurization lid, so that pressurization lid and mixed
Material contact is closed, continues to stir.Hereafter, temperature is every increases 4 DEG C, first lifts pressurization cover, and pressurization lid periphery is cleared up and is done
Only, then by pressurization lid lift completely, stirring overturning mixed once glue then pushes pressurization lid, and continue to stir again, works as temperature
When being increased to 123 DEG C, epoxy glue is discharged.
S3, a mill, specific as follows:
The epoxy glue formed in S2 is added in two rollers of open mill, control roll spacing is 2mm, is squeezed in flakes, then will squeeze
Sheet of epoxy glue is thrown to again in two rollers of open mill, and control roll spacing is 10mm, and slice is stand-by.
The 10% sheet of epoxy glue of extruding is taken out, i.e. taking-up 8.91kg epoxy glue, rubber is added into 8.91kg epoxy glue
Promoter for rubber DM3kg, and temperature is gradually risen, it is uniformly mixed after forming mixture, carries out draw operation.
S4, mixing, specific as follows:
The temperature that remaining 80.19kg epoxy glue is poured into mixer, and controls mixer is 45 DEG C, pushes pressurization
Lid, increases temperature while stirring, when temperature is up to 75 DEG C, partially lifts pressurization lid, pressurization lid periphery is cleaned out, then completely
Lift pressurization lid, 11.91kg mixture, the foaming agent 6kg being uniformly mixed with rubber accelerator DM in S3 is added.It is formed
Blank allows mixer to dally after 35s, then pushes pressurization lid, continue to stir.Hereafter, temperature is every increases 3 DEG C, and will first pressurize cover
Divide and lift, and pressurization lid periphery is cleaned out, then pressurization lid is lifted completely, stirring overturning is primary, then pushes and adds again
Gland, and continue to stir, when temperature is increased to 100 DEG C, blank is discharged.
S5, secondary mill, specific as follows:
The blank that S4 is formed is added in two rollers of the open mill that roller diameter is 18 cun, and control roll spacing is 1.5mm, Bao Tong 3
Secondary and extruding in flakes, then will squeeze sheet of blank and put into two rollers of the open mill that roller diameter is 16 cun, and control roll spacing is
10mm, repeatedly in roll-in to blank without obvious bubble and spot after, form plate piece, and weigh according to actual needs.
S6, one step foaming, specific as follows:
Plate after weighing is put into the mold of foaming oil-pressure machine and is foamed, control blowing temperature is 145 DEG C, control
Foamed time is 35min, after the completion of foaming, is opened and cooling, obtains foaming body.
S7, second time of foaming, specific as follows:
Foaming body is put into the mold of second time of foaming machine and carries out second time of foaming, control blowing temperature is 165 DEG C, control hair
The bubble time is 35min, after the completion of foaming, is opened and cooling, takes out finished product up to natural rubber.
Embodiment 5
A kind of natural rubber, the component including following mass fraction:
Calcium carbonate 26kg；CSM rubber 43kg；3L glue 10kg；Naphthenic oil 10kg；Carbon black N220 7kg；Antioxidant 4020
0.3kg；Foaming agent 7kg；Rubber accelerator DM5kg；Cross-linking aid 0.6kg；Crosslink agent DCP 0.5kg.
In the present embodiment, foaming agent is the azo dimethyl that the article No. purchased from Jiangsu Suo Pu Chemical Co., Ltd. is DN10
Amide.
In the present embodiment, cross-linking aid is zinc oxide.
Natural rubber the preparation method is as follows:
S1, divide glue, specific as follows:
10kg3L glue is added in mixer, stirring crushes, and two rollers that will stir smashed 3L glue and pour into open mill
In, control roll spacing is 2mm, is squeezed in blocks.
S2, mixed glue, specific as follows:
43kgCSM rubber is added in mixer, stirring is broken, and S1 mill is added in the broken CSM rubber of stirring
Sheet of 3L glue 10kg is squeezed, carbon black N220 7kg, calcium carbonate 26kg, naphthenic oil 10kg, antioxidant 4020 0.3kg, is crosslinked and helps
Agent 0.6kg, crosslink agent DCP 0.5kg form epoxy glue, allow mixer to dally 65s, then push pressurization lid, so that pressurization lid and mixed
It closes glue to abut, is stirred, gradually rises smelting temperature, when temperature is up to 85 DEG C, pressurization cover is lifted, so that pressurization lid
Closing and does not contact feed inlet with epoxy glue, after pressurization lid periphery is cleaned up, then covers pressurization lid, so that pressurization lid and mixed
Material contact is closed, continues to stir.Hereafter, temperature is every increases 5 DEG C, first lifts pressurization cover, and pressurization lid periphery is cleared up and is done
Only, then by pressurization lid lift completely, stirring overturning mixed once glue then pushes pressurization lid, and continue to stir again, works as temperature
When being increased to 125 DEG C, epoxy glue is discharged.
S3, a mill, specific as follows:
The epoxy glue formed in S2 is added in two rollers of open mill, control roll spacing is 2mm, is squeezed in flakes, then will squeeze
Sheet of epoxy glue is thrown to again in two rollers of open mill, and control roll spacing is 10mm, and slice is stand-by.
The 12% sheet of epoxy glue of extruding is taken out, i.e. taking-up 11.7kg epoxy glue, rubber is added into 11.7kg epoxy glue
Promoter for rubber DM5kg, and temperature is gradually risen, it is uniformly mixed after forming mixture, carries out draw operation.
S4, mixing, specific as follows:
The temperature that remaining 85.7kg epoxy glue is poured into mixer, and controls mixer is 50 DEG C, pushes pressurization lid,
Temperature is increased while stirring, when temperature is up to 80 DEG C, partially lifts pressurization lid, pressurization lid periphery is cleaned out, then mentions completely
Pressurization lid is played, 16.7kg mixture, the foaming agent 7kg being uniformly mixed with rubber accelerator DM in S3 is added.Form base
Material allows mixer to dally after 40s, then pushes pressurization lid, continue to stir.Hereafter, temperature is every increases 5 DEG C, and will first pressurize cover
Lift, and pressurization lid periphery is cleaned out, then pressurization lid is lifted completely, stirring overturning is primary, then pushes pressurization again
Lid, and continue to stir, when temperature is increased to 105 DEG C, blank is discharged.
S5, secondary mill, specific as follows:
The blank that S4 is formed is added in two rollers of the open mill that roller diameter is 18 cun, and control roll spacing is 1.5mm, Bao Tong 3
Secondary and extruding in flakes, then will squeeze sheet of blank and put into two rollers of the open mill that roller diameter is 16 cun, and control roll spacing is
10mm, repeatedly in roll-in to blank without obvious bubble and spot after, form plate piece, and weigh according to actual needs.
S6, one step foaming, specific as follows:
Plate after weighing is put into the mold of foaming oil-pressure machine and is foamed, control blowing temperature is 150 DEG C, control
Foamed time is 30min, after the completion of foaming, is opened and cooling, obtains foaming body.
S7, second time of foaming, specific as follows:
Foaming body is put into the mold of second time of foaming machine and carries out second time of foaming, control blowing temperature is 170 DEG C, control hair
The bubble time is 30min, after the completion of foaming, is opened and cooling, takes out finished product up to natural rubber.
Comparative example 1
Use notification number for the system in the Chinese patent " a kind of rubber pange shoes and preparation method thereof " of CN103937045B
Preparation Method prepares rubber pange piece.
A kind of rubber pange piece, the component including following mass fraction:
Natural rubber 270g；Mountain flour 650g；Zinc oxide 70g；Stearic acid 4g；Foaming agent 7g；Sulphur 5g；Diphenylguanidine 4g；Promote
Into agent DM4g；Anti-aging agent 9g；Ointment 10.5g.
Rubber pange piece the preparation method is as follows:
By natural rubber 270g, mountain flour 650g, zinc oxide 70g, stearic acid 4g, foaming agent 7g, sulphur 5g, diphenylguanidine 4g,
Altax 4g, anti-aging agent 9g, ointment 10.5g, which are added in rubber mixing machine, is kneaded 30min to get rubber pange piece.
Experiment 1
More than GB/T528-2009 " measurement of vulcanized rubber or thermoplastic elastomer tensile stress-strain performance " detection
Embodiment and comparative example prepare the fracture tensile strength (MPa) of resulting natural rubber, then by above embodiments and compare
Example, which prepares resulting natural rubber and is placed under sunlight, is exposed to the sun one week, detects its fracture tensile strength (MPa) again.
Experiment 2
Above embodiments are respectively cut and comparative example prepares resulting natural rubber to form the side of 5cm*5cm*3cm
Block, and pressure is removed, and record natural rubber to compress natural rubber square to the pressure 10s of natural rubber square application 10N
Square restores to the time (s) of original state with the resilience of testing product, then prepared by above embodiments and comparative example resulting
Natural rubber, which is placed under sunlight, to be exposed to the sun one week, detect again restore after its pressure 10s by 10N to the time (s) of original state with
The resilience of testing product.
Experiment 3
According to GB/T529-2008 " measurement (trousers shape, square and the crescent of vulcanized rubber or thermoplastic elastomer tearing strength
Shape sample) " detection above embodiments and comparative example prepare the tearing strength (MPa) of resulting natural rubber, then will be real above
It applies example and comparative example prepares resulting natural rubber and is placed under sunlight and is exposed to the sun one week, detect its tearing strength (MPa) again.
The above detection data is shown in Table 1.
It can be obtained according to the data comparison of embodiment 1-5 in table 1 and comparative example 1, embodiment 1-5 is all made of the group in the present invention
Distribution ratio and preparation method prepare natural rubber, and comparative example 1 prepares rubber using traditional component proportion and preparation method,
The fracture tensile strength of embodiment 1-5 is above comparative example 1, and the compression reinstatement time of embodiment 1-5 shorter than compares
Example 1, i.e., the resilience of embodiment 1-5 is better than comparative example 1, and the tensile strength of embodiment 1-5, compression are restored to original state
Time and tearing strength are respectively less than comparative example 1 with the difference before being exposed to the sun after being exposed to the sun, and illustrate by using group of the invention
Distribution ratio and preparation method prepare natural rubber, are conducive to enhance the fracture tensile strength of natural rubber, resilience and tear
Resistance to spalling, meanwhile, also advantageously improve the weatherability of natural rubber so that the fracture tensile strength of natural rubber, resilience with
And tearing strength is not readily susceptible to the influence of the natural causes such as illumination, cold and hot, wind and rain and bacterium, to be conducive to extend natural
The service life of rubber.
It can be obtained according to the data comparison of embodiment 1-2 in table 1 and embodiment 3-5, be made in embodiment 1-2 using H foaming agent
For foaming agent, using silica as cross-linking aid, embodiment 3-5 uses azodicarbonamide as foaming agent, using oxidation
Zinc is as cross-linking aid, and embodiment 1-2 has lacked mixer up to after certain temperature than embodiment 3-5, every to increase 3 DEG C -5 DEG C,
The operation of mixture in a stirring mixer of overturning, and when the blowing temperature of embodiment 1-2 and embodiment 3-5 and foaming
Between it is inconsistent, and the fracture tensile strength of embodiment 3-5 is above embodiment 1-2's, and the compression of embodiment 3-5 restores to the original state
Time is shorter than embodiment 1-2, i.e., the resilience of embodiment 3-5 is better than embodiment 1-2, and the stretching of embodiment 3-5 is strong
Degree is pressurized and restores to be respectively less than embodiment 1-2 with the difference before being exposed to the sun after being exposed to the sun to the time of original state and tearing strength, says
It is bright as foaming agent and to use zinc oxide as cross-linking aid by using azodicarbonamide, due to azodicarbonamide
Fusing point is higher, it is not easy to decompose in advance, simultaneously as zinc oxide advantageously reduces the decomposition temperature of foaming agent, so that foaming agent
Foaming be easier to be initiated, to be not easy to influence the foaming of natural rubber, the foaming for being conducive to natural rubber is more abundant
Uniformly, so be conducive to improve natural rubber foam cell uniformity, meanwhile, so that the tensile strength of natural rubber, resilience with
And tearing strength is not readily susceptible to the influence of the natural causes such as illumination, cold and hot, wind and rain and bacterium, is conducive to extend natural rubber
Service life；After illustrating by being increased to certain temperature, every to increase 3 DEG C -5 DEG C, stirring overturns mixed once material and passes through
The temperature and time of foaming is controlled, the mixing for being conducive to mixture is more uniform, so that the foaming process of natural rubber and friendship
Connection preferably controlled, be conducive to natural rubber material it is abundant foam and it is full cross-linked so that the bubble of natural rubber material
Hole is more uniform, thus be conducive to enhance tensile strength, resilience and the tearing strength of natural rubber material, meanwhile, favorably
In the weatherability for improving natural rubber, so that the tensile strength of natural rubber, resilience and tearing strength are not readily susceptible to light
According to the influence of the natural causes such as, cold and hot, wind and rain and bacterium, it is conducive to extend the service life of natural rubber.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of natural rubber, it is characterized in that: including the component of following mass fraction:
20-28 parts of calcium carbonate；
35-45 parts of CSM rubber；
4-10 parts of 3L glue；
10-15 parts of naphthenic oil；
5-10 parts of carbon black N220；
0.2-0.5 parts of antioxidant 4020；
3-10 parts of foaming agent；
DM1.5-6 parts of rubber accelerator；
0.6-1.2 parts of cross-linking aid；
0.2-0.8 parts of crosslink agent DCP.
2. natural rubber according to claim 1, it is characterized in that: the foaming agent is azodicarbonamide.
3. natural rubber according to claim 1 to 2, it is characterized in that: the cross-linking aid is zinc oxide.
4. a kind of preparation method of natural rubber a method according to any one of claims 1-3, it is characterized in that: the following steps are included:
S1, divide glue: 3L glue being stirred and is crushed, and smashed 3L glue mill will be stirred and squeezed in flakes；
S2, mixed glue: CSM rubber being stirred and is crushed, and S1 mill is added in stirring broken CSM rubber and squeezes sheet of 3L
Glue, carbon black N220, calcium carbonate, naphthenic oil, antioxidant 4020, cross-linking aid, crosslink agent DCP, controlled at 75 DEG C -125 DEG C,
It stirs evenly to form epoxy glue and discharge；
S3, a mill: the epoxy glue in S2 being squeezed in flakes, and the sheet of epoxy glue of extruding for taking out 8%-12%, toward taking-up
The sheet of epoxy glue of extruding in be added rubber accelerator DM, stir evenly to form mixture and cooling；
S4, mixing: mixing is remaining to squeeze sheet of epoxy glue, and control smelting temperature is 40 DEG C -80 DEG C, and be added foaming agent with
And the mixture formed in S3, it stirs evenly to form blank and discharge；
S5, secondary mill: the blank in S4 is squeezed in flakes, plate is formed；
S6, one step foaming: plate is added in mold and carries out one-step mould foaming, obtains foaming body；
S7, second time of foaming: taking out foaming body and adds progress secondary mould pressing foaming in mold, and die sinking takes out finished product to get day
Right rubber.
5. the preparation method of natural rubber according to claim 4, it is characterized in that: the step S2 in closed environment into
Row.
6. the preparation method of natural rubber according to claim 5, it is characterized in that: S1 mill is added in the step S2
After squeezing sheet of 3L glue, carbon black N220, calcium carbonate, naphthenic oil, antioxidant 4020, cross-linking aid and crosslink agent DCP, gradually
Temperature is increased, after temperature is up to 80 DEG C -85 DEG C, temperature is every to increase 3 DEG C -5 DEG C, stirring overturning mixed once material, when temperature is up to 120
After DEG C -125 DEG C, epoxy glue draw operation is carried out.
7. the preparation method of natural rubber according to claim 4, it is characterized in that: being gradually risen surplus in the step S4
The smelting temperature of the remaining sheet of epoxy glue of extruding, when temperature is up to 70 DEG C -80 DEG C, be added formed in foaming agent and S3 it is mixed
Close material.
8. the preparation method of natural rubber according to claim 7, it is characterized in that: foaming agent is added in the step S4
And after the mixture formed in S3, temperature is every to increase 3 DEG C -5 DEG C, a stirring blank of overturning, when temperature is up to 95 DEG C -105 DEG C
When, carry out blank draw operation.
9. the preparation method of natural rubber according to claim 4, it is characterized in that: controlling primary hair in the step S6
The temperature of bubble is 140 DEG C -150 DEG C, and the time for controlling one step foaming is 30min-40min.
10. the preparation method of natural rubber according to claim 4, it is characterized in that: controlling secondary hair in the step S7
The temperature of bubble is 160 DEG C -170 DEG C, and the time for controlling second time of foaming is 30min-40min.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633753A (en) * | 2009-08-21 | 2010-01-27 | 福建省易宝塑胶制品有限公司 | Neoprene closed cell foamed material and preparation method thereof |
| CN102219946A (en) * | 2011-05-10 | 2011-10-19 | 易宝(福建)高分子材料有限公司 | Low-halogen environment-friendly chloroprene rubber (CR) closed-cell foam material and preparation method thereof |
| CN102311588A (en) * | 2011-07-20 | 2012-01-11 | 中国皮革和制鞋工业研究院 | Lightweight, flame retardant and rubber foaming sole material and manufacturing method thereof |
| CN107200946A (en) * | 2016-03-16 | 2017-09-26 | 青岛科技大学 | A kind of chlorosulfonated polyethylene microcellular foam material and preparation method thereof |
-
2019
- 2019-05-09 CN CN201910382590.1A patent/CN110041633A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633753A (en) * | 2009-08-21 | 2010-01-27 | 福建省易宝塑胶制品有限公司 | Neoprene closed cell foamed material and preparation method thereof |
| CN102219946A (en) * | 2011-05-10 | 2011-10-19 | 易宝(福建)高分子材料有限公司 | Low-halogen environment-friendly chloroprene rubber (CR) closed-cell foam material and preparation method thereof |
| CN102311588A (en) * | 2011-07-20 | 2012-01-11 | 中国皮革和制鞋工业研究院 | Lightweight, flame retardant and rubber foaming sole material and manufacturing method thereof |
| CN107200946A (en) * | 2016-03-16 | 2017-09-26 | 青岛科技大学 | A kind of chlorosulfonated polyethylene microcellular foam material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 彭丹编写: "《家用电冰箱》", 30 September 1985, 贵阳：贵州人民出版社 * |
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