CN109096552A - A kind of warping strength elastic natural rubber pad and preparation method thereof - Google Patents
A kind of warping strength elastic natural rubber pad and preparation method thereof Download PDFInfo
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- CN109096552A CN109096552A CN201810879021.3A CN201810879021A CN109096552A CN 109096552 A CN109096552 A CN 109096552A CN 201810879021 A CN201810879021 A CN 201810879021A CN 109096552 A CN109096552 A CN 109096552A
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- 244000043261 Hevea brasiliensis Species 0.000 title claims abstract description 65
- 229920003052 natural elastomer Polymers 0.000 title claims abstract description 65
- 229920001194 natural rubber Polymers 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000010459 dolomite Substances 0.000 claims abstract description 49
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 49
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 39
- 229920001971 elastomer Polymers 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000012986 modification Methods 0.000 claims abstract description 27
- 230000004048 modification Effects 0.000 claims abstract description 27
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000005864 Sulphur Substances 0.000 claims abstract description 22
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- 239000006229 carbon black Substances 0.000 claims abstract description 17
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 16
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 16
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000008117 stearic acid Substances 0.000 claims abstract description 16
- 239000004902 Softening Agent Substances 0.000 claims abstract description 15
- 238000002425 crystallisation Methods 0.000 claims abstract description 12
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 42
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 37
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 28
- MHKLKWCYGIBEQF-UHFFFAOYSA-N 4-(1,3-benzothiazol-2-ylsulfanyl)morpholine Chemical compound C1COCCN1SC1=NC2=CC=CC=C2S1 MHKLKWCYGIBEQF-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000009472 formulation Methods 0.000 claims description 7
- 238000004898 kneading Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 229910052925 anhydrite Inorganic materials 0.000 claims description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 2
- 229910052927 chalcanthite Inorganic materials 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 229910052564 epsomite Inorganic materials 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims 2
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
- C08K2003/3063—Magnesium sulfate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The present invention relates to rubber pad technical fields, disclose warping strength elastic natural rubber pad of one kind and preparation method thereof.The rubber pad includes following components by weight: 100 ~ 150 parts of natural rubber, 60 ~ 80 parts of carbon black, 20 ~ 30 parts of modification dolomite, 1 ~ 3 part of stearic acid, 2 ~ 5 parts of softening agent, 4 ~ 8 parts of promotor, 3 ~ 6 parts of anti-aging agent, 20 ~ 35 parts of multi-crystallization water compound, 3 ~ 6 parts of vulcanizing agent, 1 ~ 3 part of sulphur.Natural rubber pad of the present invention has preferable flexible resistance and elasticity.
Description
Technical field
The present invention relates to rubber pad technical fields, more particularly, to a kind of warping strength elastic natural rubber pad and its preparation side
Method.
Background technique
Natural rubber is one kind with polyprene natural polymer as main component, wherein 91%~94% is
Rubber hydrocarbon, and for nonrubber materials such as protein, fatty acid, ash content, carbohydrates.Natural rubber is most widely used general rubber
Glue.Rubber usually described in us is the natural emulsion acquired from Brazilian gum, is made through manufacturing procedures such as supersolidification, dryings
At elastic decorating film.Natural rubber elasticity with higher at normal temperature, slightly band plasticity, have extraordinary mechanical strength,
Hysteresis loss is small, and in multiple deformation, heat is low, therefore its flexible resistance is fine, and is non-polar rubber, so electrical isolation
It is functional.Since natural rubber has a series of physical chemical characteristic, especially its excellent resilience, insulating properties, water proof
Property and the characteristics such as plasticity, so having extensive use.Such as common rain boots, hot-water bag, elastic band in daily life；Medical treatment
Surgeon's gloves used in health industry, blood transfusion tube, sheath；The various tires that communications and transportation uses；Industrially use
Conveyer belt, conveyer belt, acidproof and alkali-resistant gloves；Irrigation hose, ammoniacal liquor bag for agriculturally using etc..Natural rubber system is used at present
The rubber pad flexible resistance of sebific duct made of standby can be general.
Summary of the invention
The present invention is that it is good to provide a kind of flexible resistance in order to overcome the problems, such as that prior art natural rubber flexible resistance can be poor
Elastic natural rubber pad.
The present invention also provides a kind of preparation methods of warping strength elastic natural rubber pad.
To achieve the goals above, the invention adopts the following technical scheme: a kind of warping strength elastic natural rubber pad, including
Following components by weight:
100~150 parts of natural rubber, 60~80 parts of carbon black, 20~30 parts of modification dolomite, 1~3 part of stearic acid, softening agent 2~
5 parts, 4~8 parts of promotor, 3~6 parts of anti-aging agent, 20~35 parts of multi-crystallization water compound, 3~6 parts of vulcanizing agent, 1~3 part of sulphur.
Natural rubber has elasticity with higher at normal temperature, slightly band plasticity, has extraordinary mechanical strength；Carbon black
As the reinforcing agent of rubber, enhancing can be played the role of to natural rubber；Modification dolomite and carbon black filling out as rubber pad
Material reduces cost of material；Stearic acid can play the effect of softening and plasticising to natural rubber, keep natural rubber easy to process at
Type；Promotor can promote the sulfurization of natural rubber, shorten vulcanization time, reduce curing temperature；Antiaging agent can prolong
The degradation of slow rubber, extends the service life of natural rubber pad；Multi-crystallization water compound can play increasing to natural rubber
Strong effect greatly improves the flexible resistance of natural rubber.
Preferably, the promotor is the mixture of altax and accelerant NOBS, altax and promotor
The mass ratio of NOBS is 1:2~3.
Preferably, the crystallization hydrate is MgSO4·7H2O、CuSO4·5H2O、CaSO4·2H2One of O.
Preferably, the preparation method of the modification dolomite is the following steps are included: pseudobochmite is placed in Muffle furnace,
5~10h is roasted at 1200~1300 DEG C, is obtained activated alumina presoma, is then added to activated alumina presoma
It is uniformly mixed in deionized water, the mass percent that activated alumina presoma accounts for ionized water is 10~15%, then
50~60 DEG C are warming up to, acetic acid is added, the mass percent that acetic acid accounts for ionized water is 0.5~1% 2~5h of stirring, is added
Barium nitrate and dolomite stir 10~20min, are put into and are dried to obtain modified dolomite in drying box.
The present invention is modified processing to filler dolomite, dolomite surface coat one layer of aluminium oxide, aluminium oxide with it is white
The binding force that marble has had, can uniform fold on dolomite surface, aluminium oxide and dolomite combine to have and preferably absorb heat
The effect of amount can greatly increase the high temperature resistance of natural rubber of the present invention.
Preferably, the barium nitrate, activated alumina presoma, dolomite three mass ratio be 1:8~15:5~
10。
A kind of preparation method of warping strength elastic natural rubber pad, comprising the following steps:
1) by the natural rubber of formulation weight part, carbon black, modification dolomite, stearic acid, softening agent, promotor, anti-aging agent, more knots
Brilliant hydrate, vulcanizing agent and sulphur are added in kneading machine, are kneaded at 120~130 DEG C and obtain rubber compound；
2) vulcanizing agent and sulphur are added into rubber compound, then carries out press cure and obtains rubber composition；
3) rubber composition is obtained into natural rubber pad through extruder extrusion molding.
Therefore, the invention has the following beneficial effects: (1) multi-crystallization water compounds to play enhancing to natural rubber
Effect, greatly improves the flexible resistance of natural rubber pad；(2) modification dolomite improves the heat resistance of natural rubber pad.
Specific embodiment
Below by specific embodiment, technical scheme is described further.
In the present invention, if not refering in particular to, used raw material and equipment etc. are commercially available or commonly used in the art,
Method in embodiment is unless otherwise instructed the conventional method of this field.
Embodiment 1
A kind of warping strength elastic natural rubber pad, including following components by weight:
100 parts of natural rubber, 60 parts of carbon black, 20 parts of modification dolomite, 1 part of stearic acid, 2 parts of softening agent, 4 parts of promotor, prevent old
3 parts of agent, multi-crystallization water compound Mg SO4·7H220 parts of O, 3 parts of vulcanizing agent, 1 part of sulphur.
Wherein, the promotor is the mixture of altax and accelerant NOBS, altax and accelerant NOBS
Mass ratio is 1:2.
The preparation method of modification dolomite is roasted at 1200 DEG C the following steps are included: pseudobochmite is placed in Muffle furnace
5h is burnt, activated alumina presoma is obtained, then activated alumina presoma is add to deionized water and is uniformly mixed,
The mass percent that activated alumina presoma accounts for ionized water is 10%, then heats to 50 DEG C, acetic acid is added, acetic acid accounts for
The mass percent of ionized water is 0.5% stirring 2h, adds barium nitrate and dolomite, barium nitrate, activated alumina presoma,
The mass ratio of dolomite three is 1:8:5, stirs 10min, is put into and is dried to obtain modified dolomite in drying box.
A kind of preparation method of warping strength elastic natural rubber pad, comprising the following steps:
1) by the natural rubber of formulation weight part, carbon black, modification dolomite, stearic acid, softening agent, promotor, anti-aging agent, more knots
Brilliant hydrate, vulcanizing agent and sulphur are added in kneading machine, are kneaded at 120 DEG C and obtain rubber compound；
2) vulcanizing agent and sulphur are added into rubber compound, then carries out press cure and obtains rubber composition；
3) rubber composition is obtained into natural rubber pad through extruder extrusion molding.
Embodiment 2
A kind of warping strength elastic natural rubber pad, including following components by weight:
120 parts of natural rubber, 65 parts of carbon black, 22 parts of modification dolomite, 1.5 parts of stearic acid, 3 parts of softening agent, 5 parts of promotor, prevent
4 parts of old agent, multi-crystallization water compound CuSO4·5H224 parts of O, 4 parts of vulcanizing agent, 1 part of sulphur.
Wherein, the promotor is the mixture of altax and accelerant NOBS, altax and accelerant NOBS
Mass ratio is 1:2.2.
The preparation method of modification dolomite is roasted at 1220 DEG C the following steps are included: pseudobochmite is placed in Muffle furnace
6h is burnt, activated alumina presoma is obtained, then activated alumina presoma is add to deionized water and is uniformly mixed,
The mass percent that activated alumina presoma accounts for ionized water is 12%, then heats to 53 DEG C, acetic acid is added, acetic acid accounts for
The mass percent of ionized water is 0.6% stirring 3h, adds barium nitrate and dolomite, barium nitrate, activated alumina presoma,
The mass ratio of dolomite three is 1:10:6, stirs 12min, is put into and is dried to obtain modified dolomite in drying box.
A kind of preparation method of warping strength elastic natural rubber pad, comprising the following steps:
1) by the natural rubber of formulation weight part, carbon black, modification dolomite, stearic acid, softening agent, promotor, anti-aging agent, more knots
Brilliant hydrate, vulcanizing agent and sulphur are added in kneading machine, are kneaded at 124 DEG C and obtain rubber compound；
2) vulcanizing agent and sulphur are added into rubber compound, then carries out press cure and obtains rubber composition；
3) rubber composition is obtained into natural rubber pad through extruder extrusion molding.
Embodiment 3
A kind of warping strength elastic natural rubber pad, including following components by weight:
130 parts of natural rubber, 70 parts of carbon black, 25 parts of modification dolomite, 2 parts of stearic acid, 3.5 parts of softening agent, 6 parts of promotor, prevent
4.5 parts of old agent, multi-crystallization water compound CaSO4·2H226 parts of O, 4.5 parts of vulcanizing agent, 2 parts of sulphur.
Wherein, the promotor is the mixture of altax and accelerant NOBS, altax and accelerant NOBS
Mass ratio is 1:2.5.
The preparation method of modification dolomite is roasted at 1260 DEG C the following steps are included: pseudobochmite is placed in Muffle furnace
7h is burnt, activated alumina presoma is obtained, then activated alumina presoma is add to deionized water and is uniformly mixed,
The mass percent that activated alumina presoma accounts for ionized water is 13%, then heats to 55 DEG C, acetic acid is added, acetic acid accounts for
The mass percent of ionized water is 0.7% stirring 3.5h, adds barium nitrate and dolomite, barium nitrate, activated alumina forerunner
Body, dolomite three mass ratio be 1:12:7, stir 15min, be put into and be dried to obtain modified dolomite in drying box.
A kind of preparation method of warping strength elastic natural rubber pad, comprising the following steps:
1) by the natural rubber of formulation weight part, carbon black, modification dolomite, stearic acid, softening agent, promotor, anti-aging agent, more knots
Brilliant hydrate, vulcanizing agent and sulphur are added in kneading machine, are kneaded at 125 DEG C and obtain rubber compound；
2) vulcanizing agent and sulphur are added into rubber compound, then carries out press cure and obtains rubber composition；
3) rubber composition is obtained into natural rubber pad through extruder extrusion molding.
Embodiment 4
A kind of warping strength elastic natural rubber pad, including following components by weight:
140 parts of natural rubber, 75 parts of carbon black, 28 parts of modification dolomite, 2.5 parts of stearic acid, 4 parts of softening agent, 7 parts of promotor, prevent
5 parts of old agent, multi-crystallization water compound Mg SO4·7H230 parts of O, 5 parts of vulcanizing agent, 3 parts of sulphur.
Wherein, the promotor is the mixture of altax and accelerant NOBS, altax and accelerant NOBS
Mass ratio is 1:2.8.
The preparation method of modification dolomite is roasted at 1280 DEG C the following steps are included: pseudobochmite is placed in Muffle furnace
8h is burnt, activated alumina presoma is obtained, then activated alumina presoma is add to deionized water and is uniformly mixed,
The mass percent that activated alumina presoma accounts for ionized water is 14%, then heats to 58 DEG C, acetic acid is added, acetic acid accounts for
The mass percent of ionized water is 0.8% stirring 4h, adds barium nitrate and dolomite, barium nitrate, activated alumina presoma,
The mass ratio of dolomite three is 1:14:8, stirs 18min, is put into and is dried to obtain modified dolomite in drying box.
A kind of preparation method of warping strength elastic natural rubber pad, comprising the following steps:
1) by the natural rubber of formulation weight part, carbon black, modification dolomite, stearic acid, softening agent, promotor, anti-aging agent, more knots
Brilliant hydrate, vulcanizing agent and sulphur are added in kneading machine, are kneaded at 128 DEG C and obtain rubber compound；
2) vulcanizing agent and sulphur are added into rubber compound, then carries out press cure and obtains rubber composition；
3) rubber composition is obtained into natural rubber pad through extruder extrusion molding.
Embodiment 5
A kind of warping strength elastic natural rubber pad, including following components by weight:
150 parts of natural rubber, 80 parts of carbon black, 30 parts of modification dolomite, 3 parts of stearic acid, 5 parts of softening agent, 8 parts of promotor, prevent old
6 parts of agent, multi-crystallization water compound CuSO4·5H235 parts of O, 6 parts of vulcanizing agent, 3 parts of sulphur.
Wherein, the promotor is the mixture of altax and accelerant NOBS, altax and accelerant NOBS
Mass ratio is 1:3.
The preparation method of modification dolomite is roasted at 1300 DEG C the following steps are included: pseudobochmite is placed in Muffle furnace
10h is burnt, activated alumina presoma is obtained, then activated alumina presoma is add to deionized water and is stirred
Even, the mass percent that activated alumina presoma accounts for ionized water is 15%, then heats to 60 DEG C, acetic acid, acetic acid is added
The mass percent for accounting for ionized water is 1% stirring 5h, adds barium nitrate and dolomite, barium nitrate, activated alumina forerunner
Body, dolomite three mass ratio be 1:15:10, stir 20min, be put into and be dried to obtain modified dolomite in drying box.
A kind of preparation method of warping strength elastic natural rubber pad, comprising the following steps:
1) by the natural rubber of formulation weight part, carbon black, modification dolomite, stearic acid, softening agent, promotor, anti-aging agent, more knots
Brilliant hydrate, vulcanizing agent and sulphur are added in kneading machine, are kneaded at 130 DEG C and obtain rubber compound；
2) vulcanizing agent and sulphur are added into rubber compound, then carries out press cure and obtains rubber composition；
3) rubber composition is obtained into natural rubber pad through extruder extrusion molding.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (6)
1. a kind of warping strength elastic natural rubber pad, which is characterized in that including following components by weight:
100 ~ 150 parts of natural rubber, 60 ~ 80 parts of carbon black, 20 ~ 30 parts of modification dolomite, 1 ~ 3 part of stearic acid, 2 ~ 5 parts of softening agent,
4 ~ 8 parts of promotor, 3 ~ 6 parts of anti-aging agent, 20 ~ 35 parts of multi-crystallization water compound, 3 ~ 6 parts of vulcanizing agent, 1 ~ 3 part of sulphur.
2. the warping strength elasticity natural rubber pad of one kind according to claim 1, which is characterized in that the promotor is to promote
The mass ratio of the mixture of agent DM and accelerant NOBS, altax and accelerant NOBS is 1:2 ~ 3.
3. the warping strength elasticity natural rubber pad of one kind according to claim 1, which is characterized in that the crystallization hydrate
For MgSO4·7H2O、CuSO4·5H2O、CaSO4·2H2One of O.
4. the warping strength elasticity natural rubber pad of one kind according to claim 1, which is characterized in that the modification dolomite
Preparation method is the following steps are included: pseudobochmite is placed in Muffle furnace, and 5 ~ 10h of roasting, obtains activity at 1200 ~ 1300 DEG C
Then activated alumina presoma is add to deionized water and is uniformly mixed, before activated alumina by alumina precursor
Driving body and accounting for the mass percent of ionized water is 10 ~ 15%, then heats to 50 ~ 60 DEG C, acetic acid is added, acetic acid accounts for ionized water
Mass percent be 0.5 ~ 1% 2 ~ 5h of stirring, add barium nitrate and dolomite, stir 10 ~ 20min, be put into drying box and do
It is dry to obtain modified dolomite.
5. the warping strength elasticity natural rubber pad of one kind according to claim 1, which is characterized in that the barium nitrate, activity
Alumina precursor, dolomite three mass ratio be 1:8 ~ 15:5 ~ 10.
6. a kind of preparation method of the warping strength elastic natural rubber pad as described in claim 1 ~ 5 any claim, special
Sign is, comprising the following steps:
1) by the natural rubber of formulation weight part, carbon black, modification dolomite, stearic acid, softening agent, promotor, anti-aging agent, more knots
Brilliant hydrate, vulcanizing agent and sulphur are added in kneading machine, are kneaded at 120 ~ 130 DEG C and obtain rubber compound；
2) vulcanizing agent and sulphur are added into rubber compound, then carries out press cure and obtains rubber composition；
3) rubber composition is obtained into natural rubber pad through extruder extrusion molding.
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