CN104292524A - Modified natural rubber cable sheath material - Google Patents
Modified natural rubber cable sheath material Download PDFInfo
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- CN104292524A CN104292524A CN201410557218.7A CN201410557218A CN104292524A CN 104292524 A CN104292524 A CN 104292524A CN 201410557218 A CN201410557218 A CN 201410557218A CN 104292524 A CN104292524 A CN 104292524A
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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
- C08L7/00—Compositions of natural rubber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a modified natural rubber cable sheath material which is characterized by comprising the following components in parts by weight: 45-75 parts of natural rubber, 15-40 parts of butadiene styrene rubber, 10-15 parts of isoprene rubber, 25-40 parts of modified kieselguhr, 5-15 parts of white carbon black, 15-33 parts of nano calcium carbonate, 2-3.5 parts of sulfur, 1.3-2.5 parts of bis(1-(tert-butylperoxy)-1-methylethyl)-benzene, 1-1.5 parts of an accelerant M, 0.3-0.8 part of an accelerant DM, 1-1.5 parts of an accelerant CZ, 0.8-1.5 parts of stearic acid, 2-4.5 parts of zinc oxide, 5-15 parts of vitamin C rare earth complex, 0.3-0.5 part of an anti-aging agent MB, 0.3-1 part of an anti-aging agent RD, 0.3-0.8 part of polyethylene glycol, 3-15 parts of soybean oil, 1-3 parts of triethyl citrate and 2-6 parts of a silane coupling agent. The modified natural rubber cable sheath material disclosed by the invention is good in anti-aging property and excellent in mechanical property, and a cable sheath made of the modified natural rubber cable sheath material is good in comprehensive property and long in service life.
Description
Technical field
The present invention relates to cable sheath material technical field, particularly relate to a kind of modified natural rubber cable sheath material.
Background technology
The natural high moleculer eompound of natural rubber to be a kind of with polyisoprene be main component.Because natural rubber molecular chain is at normal temperatures in metamict, Chain Flexibility is good, and it has good elasticity at normal temperatures; Natural rubber due to high, the suitable molecular vibrational temperature of relative molecular mass wide, molecular chain is easy to fracture, add in rubber the gel molecular that there is some amount, be therefore easy to carry out to plasticate, mixing, calendering, extrude, shaping etc., there is good processing characteristics; And because be non-polar rubber, so electrical insulation capability is good.But because there is unsaturated double-bond, so natural rubber is the material that a kind of chemical reaction ability is stronger, light, heat, ozone, radiation, subdue distortion and the metal such as copper, manganese can promote the aging of rubber, not ageing-resistant is the deadly defect of natural rubber, the cable sheath ageing resistance made of natural rubber merely and the demand that can not meet society work-ing life, need to improve.
Summary of the invention
The present invention proposes a kind of modified natural rubber cable sheath material, its ageing resistance is good, excellent in mechanical performance, the cable sheath good combination property made of it, long service life.
The present invention proposes a kind of modified natural rubber cable sheath material, its raw material comprises following component by weight: natural rubber 45-75 part, styrene-butadiene rubber(SBR) 15-40 part, polyisoprene rubber 10-15 part, modification infusorial earth 25-40 part, white carbon black 5-15 part, nano-calcium carbonate 15-33 part, sulphur 2-3.5 part, dual-tert-butyl peroxy isopropyl base benzene 1.3-2.5 part, captax 1-1.5 part, altax 0.3-0.8 part, accelerant CZ 1-1.5 part, stearic acid 0.8-1.5 part, zinc oxide 2-4.5 part, vitamins C rare earth compounding 5-15 part, antioxidant MB 0.3-0.5 part, anti-aging agent RD 0.3-1 part, polyoxyethylene glycol 0.3-0.8 part, soybean oil 3-15 part, triethyl citrate 1-3 part, silane coupling agent 2-6 part.
Preferably, described vitamins C rare earth compounding is prepared according to following technique: join in 30-50 part water by 5-15 part rare earth nitrate and 30-40 part vitamins C by weight, stirring reaction 2-4h at 35-40 DEG C, through cooling, volatilization, washing, dry, pulverize, sieving obtains described vitamins C rare earth compounding.
Preferably, in the preparation process of vitamins C rare earth compounding, described rare earth nitrate is one or more the combination in lanthanum nitrate, cerous nitrate, samaric nitrate, Yttrium trinitrate, Erbium trinitrate.
Preferably, described vitamins C rare earth compounding is prepared according to following technique: join in 40 parts of water by 10 parts of samaric nitrates and 36 parts of vitamins Cs by weight, stirring reaction 2.5h at 36 DEG C, through cooling, volatilization, washing, dry, pulverize, sieving obtains described vitamins C rare earth compounding.
Preferably, described modification infusorial earth is prepared according to following technique: be dispersed in 20-50 part ethanol by 20-40 part diatomite by weight, be heated to 70-75 DEG C, stir 20-40min, adjustment mixing speed is 200-280r/min, dropwise add 30-50 part stearic acid ethanolic soln, wherein, in stearic acid ethanolic soln, stearic massfraction is 1-3wt%; Then regulate mixing speed to be 1600-1800r/min, stirring reaction 2-5h, filter after cooling, drying obtains described modification infusorial earth.
Preferably, described modification infusorial earth is prepared according to following technique: be dispersed in 40 parts of ethanol by 33 parts of diatomite by weight, be heated to 73 DEG C, stir 35min, adjustment mixing speed is 250r/min, dropwise add 39 parts of stearic acid ethanolic solns, wherein, in stearic acid ethanolic soln, stearic massfraction is 2.5wt%; Then regulate mixing speed to be 1750r/min, stirring reaction 2.9h, filter after cooling, drying obtains described modification infusorial earth.
Preferably, its raw material comprises following component by weight: natural rubber 60-70 part, styrene-butadiene rubber(SBR) 18-25 part, polyisoprene rubber 12-15 part, modification infusorial earth 30-36 part, white carbon black 7-13 part, nano-calcium carbonate 20-27 part, sulphur 2.6-3.3 part, dual-tert-butyl peroxy isopropyl base benzene 1.7-2.2 part, captax 1.25-1.45 part, altax 0.39-0.68 part, accelerant CZ 1.19-1.45 part, stearic acid 1.3-1.45 part, zinc oxide 3-4.1 part, vitamins C rare earth compounding 9-13 part, antioxidant MB 0.37-0.45 part, anti-aging agent RD 0.39-0.8 part, polyoxyethylene glycol 0.5-0.78 part, soybean oil 9-12 part, triethyl citrate 1.7-2.3 part, silane coupling agent 4-5.6 part.
Preferably, its raw material comprises following component by weight: natural rubber 65 parts, 20 parts, styrene-butadiene rubber(SBR), polyisoprene rubber 15 parts, modification infusorial earth 35 parts, white carbon black 10 parts, nano-calcium carbonate 26 parts, 2.9 parts, sulphur, dual-tert-butyl peroxy isopropyl base benzene 2.1 parts, captax 1.29 parts, altax 0.56 part, accelerant CZ 1.34 parts, stearic acid 1.37 parts, 3.6 parts, zinc oxide, vitamins C rare earth compounding 11 parts, antioxidant MB 0.43 part, anti-aging agent RD 0.64 part, polyoxyethylene glycol 0.59 part, soybean oil 11 parts, triethyl citrate 1.9 parts, silane coupling agent 5.5 parts.
In the present invention, the use properties of its physical and mechanical properties of styrene-butadiene rubber(SBR), processing characteristics and the goods that coordinate natural rubber to add is close to natural rubber, wear-resisting, heat-resisting, ageing-resistant and vulcanization rate is more excellent compared with natural rubber, use with natural rubber and polyisoprene rubber, the performance of three is worked in coordination with mutually, the ageing-resistant performance of elastomeric material is improved while maintaining the original high stretching of natural rubber, high tear performance, effectively extend time of scorch, add the stationarity of vulcanization reaction and the bonding force between rubber and filler, improve the performance of rubber;
Diatomite belongs to the natural mineral of aboundresources cheapness, it has high surface energy and hydrophilic oleophobic property, not easily disperse in organic matrix, and the poor compatibility between polymeric matrix, in optimal way of the present invention, after surface modification being carried out to diatomite with stearic acid, stearic acid is adsorbed on diatomite surface by physical action, diatomite surface is made to become hydrophobicity from wetting ability, add in rubber matrix, crosslinked group of reuniting tails off, dispersed enhancing, the strengthening action of rubber matrix is strengthened, again because stearic acid itself has lubrication, the frictional force between particle is reduced after modification infusorial earth, improve the mobility of rubber,
In the vitamins C rare earth compounding added, the outer field unoccupied orbital of rare earth and other raw material there occurs mating reaction in sulfidation, produce intermediate, make itself and sulphur molecular reaction easier, facilitate sulfidation, shorten the production cycle, cost-saving and resource; Complex compound is defined between rare earth metal and rubber molecule, enhance the mechanical property of rubber, and the rare earth ion of vitamins C rare earth compounding has the oxygen radical thus the ability of termination weathering process that produce in good steady heat oxygen aging process, after coordinating with antioxidant MB, anti-aging agent RD, improve the heat oxygen aging resistance effect of title complex; Rare earth ion energy stabilized radical and vitamins C has the effect of catching with stabilized radical, the vitamins C rare earth compounding that both are formed shows the aging ability of good UV resistance, the generation of elastomeric material surface crack and growth when can suppress or delay ultraviolet ageing; Because rare earth vitamins C has very strong reductibility, it can be better than ozone reaction, prevent ozone to the erosion of cross-linked rubber, rare earth ion has the effect of stable oxy radical, the zwitter-ion that can produce in stable ozone process, both effect improves the resistance to ozone ageing of elastomeric material after working in coordination with, the generation of the be full of cracks on elastomeric material surface when suppressing or delay ozone ageing and growth, also delay abrasion process in addition, improve the wear resistance of elastomeric material.
In the present invention, by selecting suitable raw material, the content of optimizing materials, each raw material is made to be in best proportioning, make the performance of each raw material obtain maximum working in coordination with, the modified natural rubber cable sheath material ageing resistance obtained is good, excellent in mechanical performance, with the cable sheath good combination property that it makes, long service life.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail; should understand; embodiment is only for illustration of the present invention, instead of for limiting the present invention, any amendment, equivalent replacement etc. made on basis of the present invention is all in protection scope of the present invention.
In a particular embodiment, modified natural rubber cable sheath material of the present invention, in its raw material, the weight part of natural rubber can be 45.6, 46, 46.3, 47, 47.8, 48, 48.9, 49, 49.5, 50.6, 51, 51.3, 52, 53, 54, 55, 55.6, 56, 56.7, 57, 57.3, 58, 59, 61, 62, 63.5, 64, 65.8, 66, 66.9, 68, 69, 70.5, 71, 71.3, 72, 72.6, 73, 73.6, 74, 74.5 parts, the weight part of styrene-butadiene rubber(SBR) can be 15.6, 16, 16.3, 17, 17.4, 18.5, 19, 19.6, 20.3, 21, 22, 22.3, 23, 23.6, 24, 24.5, 25.3, 26, 26.4, 27, 28, 29, 31, 32, 33, 35.6, 36, 38, 39, 39.4 parts, the weight part of polyisoprene rubber can be 10.6, 11, 11.3, 12.4, 13, 13.5, 14, 14.9 parts, the weight part of modification infusorial earth can be 25.3, 26, 26.4, 27, 27.5, 28, 28.9, 29, 31.3, 32, 32.5, 33, 33.6, 34, 34.5, 35.9, 37, 37.8, 38, 39, 39.5 parts, the weight part of white carbon black can be 5.6, 6, 6.3, 7.5, 8, 8.6, 9, 9.4, 10.3, 11, 12, 12.5, 13.6, 14, 14.8 parts, the weight part of nano-calcium carbonate can be 15.9, 17, 19, 20.6, 23, 23.5, 24, 25, 25.3, 26.7, 27.4, 28, 28.9, 29, 31, 31.5, 32, 32.3 parts, the weight part of sulphur can be 2.2, 2.36, 2.5, 2.64, 2.8, 3.15, 3.2, 3.45 parts, the weight part of dual-tert-butyl peroxy isopropyl base benzene can be 1.4, 1.5, 1.56, 1.6, 1.67, 1.78, 1.9, 2.0, 2.1, 2.26, 2.3, 2.34, 2.4, 2.46 parts, the weight part of captax can be 1.15, 1.2, 1.3, 1.34, 1.4, 1.46 parts, the weight part of altax can be 0.36, 0.4, 0.47, 0.5, 0.6, 0.64, 0.7, 0.78 part, the weight part of accelerant CZ can be 1.1, 1.2, 1.26, 1.3, 1.4, 1.47 parts, stearic weight part can be 0.86, 0.9, 0.94, 1.0, 1.1, 1.14, 1.2, 1.26, 1.34, 1.4, 1.47 parts, the weight part of zinc oxide can be 2.1, 2.26, 2.4, 2.59, 2.7, 2.8, 2.89, 2.9, 3.1, 3.23, 3.4, 3.46, 3.5, 3.7, 3.87, 3.9, 4.23, 4.3, 4.4, 4.46 parts, the weight part of vitamins C rare earth compounding can be 5.3, 6, 6.7, 7, 7.6, 8, 8.4, 9.6, 10, 10.3, 11.5, 12, 12.6, 13.5, 14, 14.7 parts, the weight part of antioxidant MB can be 0.38, 0.4, 0.42, 0.46 part, the weight part of anti-aging agent RD can be 0.4, 0.46, 0.5, 0.53, 0.6, 0.67, 0.7, 0.78, 0.85, 0.9, 0.94 part, the weight part of polyoxyethylene glycol can be 0.36, 0.4, 0.45, 0.53, 0.6, 0.67, 0.7, 0.74 part, the weight part of soybean oil can be, 3.5, 4, 4.3, 5, 5.4, 6, 6.7, 7, 7.8, 8, 8.5, 9.3, 10, 10.5, 11, 11.3, 12.4, 13, 13.5, 14, 14.6 parts, the weight part of triethyl citrate can be 1.1, 1.23, 1.3, 1.35, 1.4, 1.46, 1.5, 1.6, 1.8, 1.95, 2.1, 2.35, 2.5, 2.56, 2.6, 2.78, 2.9, 2.94 parts, the weight part of silane coupling agent can be 2.2, 2.8, 3, 3.3, 3.6, 4.7, 5, 5.3 part.
Embodiment 1
Modified natural rubber cable sheath material of the present invention, its raw material comprises following component by weight: natural rubber 45 parts, 40 parts, styrene-butadiene rubber(SBR), polyisoprene rubber 10 parts, modification infusorial earth 25 parts, white carbon black 15 parts, nano-calcium carbonate 15 parts, 3.5 parts, sulphur, dual-tert-butyl peroxy isopropyl base benzene 1.3 parts, captax 1 part, altax 0.8 part, accelerant CZ 1 part, stearic acid 1.5 parts, 2 parts, zinc oxide, vitamins C rare earth compounding 15 parts, antioxidant MB 0.3 part, anti-aging agent RD 1 part, polyoxyethylene glycol 0.3 part, soybean oil 15 parts, triethyl citrate 1 part, silane coupling agent 2 parts.
Performance Detection is carried out to the present embodiment gained modified natural rubber cable sheath material, its detected result is as follows: tensile strength is 19.3MPa, elongation at break is 435%, after IRM902 oil 90 DEG C × 70h process, tensile strength is 18.7MPa, and elongation at break is 421%, after 120 DEG C × 200h hot air aging, stretching strength retentivity is 93.6%, and elongation at break conservation rate is 93.9%.
Embodiment 2
Modified natural rubber cable sheath material of the present invention, its raw material comprises following component by weight: natural rubber 75 parts, 15 parts, styrene-butadiene rubber(SBR), polyisoprene rubber 15 parts, modification infusorial earth 40 parts, white carbon black 5 parts, nano-calcium carbonate 33 parts, 2 parts, sulphur, dual-tert-butyl peroxy isopropyl base benzene 2.5 parts, captax 1.5 parts, altax 0.3 part, accelerant CZ 1.5 parts, stearic acid 0.8 part, 4.5 parts, zinc oxide, vitamins C rare earth compounding 5 parts, antioxidant MB 0.5 part, anti-aging agent RD 0.3 part, polyoxyethylene glycol 0.8 part, soybean oil 3 parts, triethyl citrate 3 parts, silane coupling agent 6 parts,
Wherein, described vitamins C rare earth compounding is prepared according to following technique: join in 30 parts of water by 5 parts of rare earth nitrate and 40 parts of vitamins Cs by weight, stirring reaction 2h at 40 DEG C, through cooling, volatilization, washing, dry, pulverize, sieving obtains described vitamins C rare earth compounding.
Performance Detection is carried out to the present embodiment gained modified natural rubber cable sheath material, its detected result is as follows: tensile strength is 19.7MPa, elongation at break is 442%, after IRM902 oil 90 DEG C × 70h process, tensile strength is 19.1MPa, and elongation at break is 424%, after 120 DEG C × 200h hot air aging, stretching strength retentivity is 93.2%, and elongation at break conservation rate is 94.1%.
Embodiment 3
Modified natural rubber cable sheath material of the present invention, its raw material comprises following component by weight: natural rubber 61 parts, 28 parts, styrene-butadiene rubber(SBR), polyisoprene rubber 11 parts, modification infusorial earth 35.9 parts, white carbon black 10.3 parts, nano-calcium carbonate 24 parts, 3.15 parts, sulphur, dual-tert-butyl peroxy isopropyl base benzene 1.67 parts, captax 1.2 parts, altax 0.47 part, accelerant CZ 1.47 parts, stearic acid 1.14 parts, 2.7 parts, zinc oxide, vitamins C rare earth compounding 10 parts, antioxidant MB 0.42 part, anti-aging agent RD 0.7 part, polyoxyethylene glycol 0.74 part, soybean oil 11.3 parts, triethyl citrate 1.5 parts, silane coupling agent 5 parts,
Wherein, described vitamins C rare earth compounding is prepared according to following technique: join in 50 parts of water by 8 parts of lanthanum nitrates, 7 parts of Yttrium trinitrates and 30 parts of vitamins Cs by weight, stirring reaction 4h at 35 DEG C, volatilize after naturally cooling, by the powder distilled water wash obtained, and in the baking oven of 45 DEG C dry 2h, pulverize after cross 300 mesh sieves obtain described vitamins C rare earth coordinate;
Described modification infusorial earth is prepared according to following technique: be dispersed in 20 parts of ethanol by 20 parts of diatomite by weight, be heated to 75 DEG C, stir 20min, adjustment mixing speed is 280r/min, dropwise add 50 parts of stearic acid ethanolic solns, wherein, in stearic acid ethanolic soln, stearic massfraction is 3wt%; Then regulate mixing speed to be 1600r/min, stirring reaction 2h, filter after cooling, drying obtains described modification infusorial earth.
Performance Detection is carried out to the present embodiment gained modified natural rubber cable sheath material, its detected result is as follows: tensile strength is 20.1MPa, elongation at break is 432%, after IRM902 oil 90 DEG C × 70h process, tensile strength is 19.1MPa, and elongation at break is 425%, after 120 DEG C × 200h hot air aging, stretching strength retentivity is 94.2%, and elongation at break conservation rate is 94.1%.
Embodiment 4
Modified natural rubber cable sheath material of the present invention, its raw material comprises following component by weight: natural rubber 65 parts, 20 parts, styrene-butadiene rubber(SBR), polyisoprene rubber 15 parts, modification infusorial earth 35 parts, white carbon black 10 parts, nano-calcium carbonate 26 parts, 2.9 parts, sulphur, dual-tert-butyl peroxy isopropyl base benzene 2.1 parts, captax 1.29 parts, altax 0.56 part, accelerant CZ 1.34 parts, stearic acid 1.37 parts, 3.6 parts, zinc oxide, vitamins C rare earth compounding 11 parts, antioxidant MB 0.43 part, anti-aging agent RD 0.64 part, polyoxyethylene glycol 0.59 part, soybean oil 11 parts, triethyl citrate 1.9 parts, silane coupling agent 5.5 parts,
Wherein, described vitamins C rare earth compounding is prepared according to following technique: join in 40 parts of water by 10 parts of samaric nitrates and 36 parts of vitamins Cs by weight, stirring reaction 2.5h at 36 DEG C, naturally volatilize after cooling, washing with alcohol is used by after the powder distilled water wash obtained, and in the baking oven of 50 DEG C dry 1.5h, pulverize after cross 400 mesh sieves obtain described vitamins C rare earth coordinate;
Described modification infusorial earth is prepared according to following technique: be dispersed in 40 parts of ethanol by 33 parts of diatomite by weight, be heated to 73 DEG C, stir 35min, adjustment mixing speed is 250r/min, dropwise add 39 parts of stearic acid ethanolic solns, wherein, in stearic acid ethanolic soln, stearic massfraction is 2.5wt%; Then regulate mixing speed to be 1750r/min, stirring reaction 2.9h, filter after cooling, filter residue dry 5h at 50 DEG C is obtained described modification infusorial earth.
Performance Detection is carried out to the present embodiment gained modified natural rubber cable sheath material, its detected result is as follows: tensile strength is 21.4MPa, elongation at break is 447%, after IRM902 oil 90 DEG C × 70h process, tensile strength is 19.6MPa, and elongation at break is 435%, after 120 DEG C × 200h hot air aging, stretching strength retentivity is 95.3%, and elongation at break conservation rate is 95.9%
Embodiment 5
Modified natural rubber cable sheath material of the present invention, its raw material comprises following component by weight: natural rubber 55 parts, 32 parts, styrene-butadiene rubber(SBR), polyisoprene rubber 13 parts, modification infusorial earth 36 parts, white carbon black 9 parts, nano-calcium carbonate 21 parts, 3.3 parts, sulphur, dual-tert-butyl peroxy isopropyl base benzene 2.1 parts, captax 1.26 parts, altax 0.55 part, accelerant CZ 1.28 parts, stearic acid 1.3 parts, 4.1 parts, zinc oxide, vitamins C rare earth compounding 11 parts, antioxidant MB 0.39 part, anti-aging agent RD 0.46 part, polyoxyethylene glycol 0.39 part, soybean oil 13.5 parts, triethyl citrate 1.79 parts, silane coupling agent 3.9 parts,
Wherein, described vitamins C rare earth compounding is prepared according to following technique: join in 46 parts of water by 13 parts of rare earth nitrate and 38 parts of vitamins Cs by weight, stirring reaction 2.7h at 39 DEG C, through cooling, volatilization, washing, dry, pulverize, cross 400 mesh sieves and obtain described vitamins C rare earth and coordinate; Described rare earth nitrate is that lanthanum nitrate, cerous nitrate, samaric nitrate, Yttrium trinitrate, Erbium trinitrate are by the combination of any weight ratio;
Described modification infusorial earth is prepared according to following technique: be dispersed in 50 parts of ethanol by 40 parts of diatomite by weight, be heated to 70 DEG C, stir 40min, adjustment mixing speed is 200r/min, dropwise add 30 parts of stearic acid ethanolic solns, wherein, in stearic acid ethanolic soln, stearic massfraction is 1wt%; Then regulate mixing speed to be 1800r/min, stirring reaction 2h, filter after cooling, drying obtains described modification infusorial earth.
Performance Detection is carried out to the present embodiment gained modified natural rubber cable sheath material, its detected result is as follows: tensile strength is 20.3MPa, elongation at break is 445%, after IRM902 oil 90 DEG C × 70h process, tensile strength is 19.2MPa, and elongation at break is 435%, after 120 DEG C × 200h hot air aging, stretching strength retentivity is 94.9%, and elongation at break conservation rate is 94.6%.
Claims (8)
1. a modified natural rubber cable sheath material, it is characterized in that, its raw material comprises following component by weight: natural rubber 45-75 part, styrene-butadiene rubber(SBR) 15-40 part, polyisoprene rubber 10-15 part, modification infusorial earth 25-40 part, white carbon black 5-15 part, nano-calcium carbonate 15-33 part, sulphur 2-3.5 part, dual-tert-butyl peroxy isopropyl base benzene 1.3-2.5 part, captax 1-1.5 part, altax 0.3-0.8 part, accelerant CZ 1-1.5 part, stearic acid 0.8-1.5 part, zinc oxide 2-4.5 part, vitamins C rare earth compounding 5-15 part, antioxidant MB 0.3-0.5 part, anti-aging agent RD 0.3-1 part, polyoxyethylene glycol 0.3-0.8 part, soybean oil 3-15 part, triethyl citrate 1-3 part, silane coupling agent 2-6 part.
2. modified natural rubber cable sheath material according to claim 1, it is characterized in that, described vitamins C rare earth compounding is prepared according to following technique: join in 30-50 part water by 5-15 part rare earth nitrate and 30-40 part vitamins C by weight, stirring reaction 2-4h at 35-40 DEG C, through cooling, volatilization, washing, dry, pulverize, sieving obtains described vitamins C rare earth compounding.
3. modified natural rubber cable sheath material according to claim 2, it is characterized in that, in the preparation process of vitamins C rare earth compounding, described rare earth nitrate is one or more the combination in lanthanum nitrate, cerous nitrate, samaric nitrate, Yttrium trinitrate, Erbium trinitrate.
4. modified natural rubber cable sheath material according to Claims 2 or 3, it is characterized in that, described vitamins C rare earth compounding is prepared according to following technique: join in 40 parts of water by 10 parts of samaric nitrates and 36 parts of vitamins Cs by weight, stirring reaction 2.5h at 36 DEG C, through cooling, volatilization, washing, dry, pulverize, sieving obtains described vitamins C rare earth compounding.
5. modified natural rubber cable sheath material according to any one of claim 1-4, it is characterized in that, described modification infusorial earth is prepared according to following technique: be dispersed in 20-50 part ethanol by 20-40 part diatomite by weight, be heated to 70-75 DEG C, stir 20-40min, adjustment mixing speed is 200-280r/min, dropwise adds 30-50 part stearic acid ethanolic soln, wherein, in stearic acid ethanolic soln, stearic massfraction is 1-3wt%; Then regulate mixing speed to be 1600-1800r/min, stirring reaction 2-5h, filter after cooling, drying obtains described modification infusorial earth.
6. modified natural rubber cable sheath material according to claim 5, it is characterized in that, described modification infusorial earth is prepared according to following technique: be dispersed in 40 parts of ethanol by 33 parts of diatomite by weight, be heated to 73 DEG C, stir 35min, adjustment mixing speed is 250r/min, dropwise adds 39 parts of stearic acid ethanolic solns, wherein, in stearic acid ethanolic soln, stearic massfraction is 2.5wt%; Then regulate mixing speed to be 1750r/min, stirring reaction 2.9h, filter after cooling, drying obtains described modification infusorial earth.
7. modified natural rubber cable sheath material according to any one of claim 1-6, it is characterized in that, its raw material comprises following component by weight: natural rubber 60-70 part, styrene-butadiene rubber(SBR) 18-25 part, polyisoprene rubber 12-15 part, modification infusorial earth 30-36 part, white carbon black 7-13 part, nano-calcium carbonate 20-27 part, sulphur 2.6-3.3 part, dual-tert-butyl peroxy isopropyl base benzene 1.7-2.2 part, captax 1.25-1.45 part, altax 0.39-0.68 part, accelerant CZ 1.19-1.45 part, stearic acid 1.3-1.45 part, zinc oxide 3-4.1 part, vitamins C rare earth compounding 9-13 part, antioxidant MB 0.37-0.45 part, anti-aging agent RD 0.39-0.8 part, polyoxyethylene glycol 0.5-0.78 part, soybean oil 9-12 part, triethyl citrate 1.7-2.3 part, silane coupling agent 4-5.6 part.
8. modified natural rubber cable sheath material according to any one of claim 1-7, it is characterized in that, its raw material comprises following component by weight: natural rubber 65 parts, 20 parts, styrene-butadiene rubber(SBR), polyisoprene rubber 15 parts, modification infusorial earth 35 parts, white carbon black 10 parts, nano-calcium carbonate 26 parts, 2.9 parts, sulphur, dual-tert-butyl peroxy isopropyl base benzene 2.1 parts, captax 1.29 parts, altax 0.56 part, accelerant CZ 1.34 parts, stearic acid 1.37 parts, 3.6 parts, zinc oxide, vitamins C rare earth compounding 11 parts, antioxidant MB 0.43 part, anti-aging agent RD 0.64 part, polyoxyethylene glycol 0.59 part, soybean oil 11 parts, triethyl citrate 1.9 parts, silane coupling agent 5.5 parts.
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| CN105733034A (en) * | 2016-02-18 | 2016-07-06 | 合肥市再德高分子材料有限公司 | High-performance natural rubber/butadiene styrene rubber composite material |
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| CN109537620A (en) * | 2018-12-30 | 2019-03-29 | 衡橡科技股份有限公司 | A kind of packer for wind-powered electricity generation pile foundation |
| CN109537620B (en) * | 2018-12-30 | 2023-11-14 | 衡橡科技股份有限公司 | Packer for wind power pile foundation |
| CN111004423A (en) * | 2019-11-05 | 2020-04-14 | 长沙华脉新材料有限公司 | Aging-resistant marine cable material and preparation method thereof |
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