CN103601985B - A kind of preparation method of midium voltage cable second third Insulation Material - Google Patents
A kind of preparation method of midium voltage cable second third Insulation Material Download PDFInfo
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- CN103601985B CN103601985B CN201310565442.6A CN201310565442A CN103601985B CN 103601985 B CN103601985 B CN 103601985B CN 201310565442 A CN201310565442 A CN 201310565442A CN 103601985 B CN103601985 B CN 103601985B
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- 239000012774 insulation material Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 238000002156 mixing Methods 0.000 claims description 78
- 239000003292 glue Substances 0.000 claims description 68
- 229920001971 elastomer Polymers 0.000 claims description 64
- 239000005060 rubber Substances 0.000 claims description 63
- 239000000463 material Substances 0.000 claims description 57
- 239000003795 chemical substances by application Substances 0.000 claims description 35
- 238000004513 sizing Methods 0.000 claims description 35
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 30
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 29
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 28
- 229920001897 terpolymer Polymers 0.000 claims description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 18
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 18
- 239000000178 monomer Substances 0.000 claims description 18
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 17
- 239000005995 Aluminium silicate Substances 0.000 claims description 15
- 235000012211 aluminium silicate Nutrition 0.000 claims description 15
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 15
- 239000012188 paraffin wax Substances 0.000 claims description 15
- 235000021355 Stearic acid Nutrition 0.000 claims description 14
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 14
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 14
- 229920003023 plastic Polymers 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 14
- 239000008117 stearic acid Substances 0.000 claims description 14
- 239000011787 zinc oxide Substances 0.000 claims description 14
- 239000005977 Ethylene Substances 0.000 claims description 13
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 238000012216 screening Methods 0.000 claims description 12
- 239000012467 final product Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 230000001737 promoting effect Effects 0.000 claims description 11
- 239000007822 coupling agent Substances 0.000 claims description 10
- 238000004132 cross linking Methods 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 238000005728 strengthening Methods 0.000 claims description 7
- 238000001354 calcination Methods 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 4
- -1 number Substances 0.000 abstract description 6
- 230000032683 aging Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005065 mining Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 235000010216 calcium carbonate Nutrition 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000007306 turnover Effects 0.000 description 9
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 8
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 description 7
- WGRZHLPEQDVPET-UHFFFAOYSA-N 2-methoxyethoxysilane Chemical compound COCCO[SiH3] WGRZHLPEQDVPET-UHFFFAOYSA-N 0.000 description 7
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- OKIRBHVFJGXOIS-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=CC=C1C(C)C OKIRBHVFJGXOIS-UHFFFAOYSA-N 0.000 description 5
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 5
- 101000648997 Homo sapiens Tripartite motif-containing protein 44 Proteins 0.000 description 5
- 102100028017 Tripartite motif-containing protein 44 Human genes 0.000 description 5
- NOZAQBYNLKNDRT-UHFFFAOYSA-N [diacetyloxy(ethenyl)silyl] acetate Chemical compound CC(=O)O[Si](OC(C)=O)(OC(C)=O)C=C NOZAQBYNLKNDRT-UHFFFAOYSA-N 0.000 description 5
- 235000019241 carbon black Nutrition 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- 229920002554 vinyl polymer Polymers 0.000 description 5
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 description 4
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 4
- 235000019260 propionic acid Nutrition 0.000 description 4
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 4
- 230000003712 anti-aging effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 125000006182 dimethyl benzyl group Chemical group 0.000 description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- 239000004707 linear low-density polyethylene Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- QMMOXUPEWRXHJS-UHFFFAOYSA-N pent-2-ene Chemical group CCC=CC QMMOXUPEWRXHJS-UHFFFAOYSA-N 0.000 description 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N pentanoic acid group Chemical group C(CCCC)(=O)O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- VHOQXEIFYTTXJU-UHFFFAOYSA-N Isobutylene-isoprene copolymer Chemical group CC(C)=C.CC(=C)C=C VHOQXEIFYTTXJU-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention provides a kind of preparation method of midium voltage cable second third Insulation Material.By strict selection, through mixing-filter glue-air-cooled, optimized production process, presses the granular size in Insulation Material, number, Insulation Material that the degree that is uniformly dispersed is obtained in control, possess excellent electric property, splendid heat aging performance, be applicable to mining midium voltage cable.
Description
Technical field
The invention belongs to CABLE MATERIALS technical field, be specifically related to a kind of preparation method of midium voltage cable second third Insulation Material.
Background technology
At present, domestic colliery 8.7/10kV midium voltage cable, offshore oil platform 3.6/6kV ~ 18/30kV midium voltage cable also more and more ethylene-propylene rubber that adopts makees cable insulation.For low pressure Plastic-sheathed Cable, the test of the mechanical property of material, process industrial art performance and cable spark machine only need be considered.But midium voltage cable then needs to carry out partial discharge test, withstand voltage test.The key solving this problem be just to control macrobead particle in material size, number, be uniformly dispersed degree.
As CN201110299225.8, the patent of invention that name is called " middle pressure ethylene propylene rubber insulation material and preparation method ".Disclose in one and press ethylene propylene rubber insulation material and preparation method, material component and content are terpolymer EP rubber 15%-30%, ethylene propylene rubber 9%-20%, linear low density polyethylene 4%-10%, zinc oxide 4%-7%, stearic acid 0.1%-0.4%, superfine talcum powder 5%-35%, paraffin hydrocarbon ils 4%-7%, paraffin 0.5%-3%, calcinated argil 10%-30%, tensio-active agent γ-aminopropyl triethoxysilane 0.1%-0.9%, anti-aging agent 4, 4 ' two (α, α dimethyl benzyl) pentanoic 0.4%-1.8%, vulcanizing agent dicumyl peroxide 0.5%-1.5%, cocuring agent triallyl cyanurate 0.3%-1.4%.
Still there is following shortcoming in this patent:
1, this patent of invention selects linear low density polyethylene to mix with ethylene-propylene rubber(EPR) as one of base-material, and the consistency of plastics and rubber is bad.Under life-time service condition, the performance of material needs to be investigated.
2, this patent of invention anti-aging agent selects 4,4 ' two (α, α dimethyl benzyl) pentanoic, this type of anti-aging agent is mainly used in chloroprene rubber, isoprene-isobutylene rubber, styrene-butadiene rubber(SBR), natural rubber and polyurethanes sizing agent, not remarkable to the anti-old effect of ethylene-propylene rubber(EPR).
3, this patent of invention does not indicate in solution the fineness of pressing the key problem in technology of second third Insulation Material to be filler particles, and macrobead number and Granular composite degree, do not propose the technical indicator of the fillers such as talcum powder, calcium carbonate and calcinated argil.
4, there is not Lv Jiaozhe road critical process in the preparation method in this patent of invention, and use when taking up talcum powder to make film isolating agent, for middle pressure ethyl-propylene insulating materials, be easily mixed into large granular impurity, constitute a latent danger.
Summary of the invention
The present invention, in order to solve the problems of the technologies described above, provides a kind of preparation method of midium voltage cable second third Insulation Material.Present invention process is by strict selection, and optimized production process, presses the granular size in insulating material, number, insulating material that the degree that is uniformly dispersed is obtained in control, possess excellent electric property, splendid heat aging performance.
For achieving the above object, the present invention adopts following technical scheme:
A preparation method for middle pressure ethylene propylene rubber insulation material, is characterized in that: processing step is as follows:
A is mixing
A) by terpolymer EP rubber 30 ~ 70 parts and ethyl butyric rubber 30 ~ 70 parts of input Banbury mixeies, mixing, evenly mixing at 80 DEG C ~ 100 DEG C;
B) then promoting agent 5 ~ 13 parts is dropped into Banbury mixer, filler 50 ~ 130 parts, evenly mixing.
C) 2 ~ 8 parts, paraffin, 10 ~ 20 parts, oxidation inhibitor, coupling agent 0.5 ~ 3 part, fluidizer 5 ~ 15 parts, strengthening agent 10 ~ 35 parts is dropped into Banbury mixer, evenly mixing.
D) then drop into linking agent 2 ~ 5 parts and crosslinking coagent 1 ~ 3 part to Banbury mixer, mixing 55s ~ 65s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Sizing material is ground on page machine at three rollers and turns over white silk, then through rubber strainer filter glue, filtering net at least three layers, filter glue temperature controls at 80 ~ 100 DEG C.
Preferably, described filtering net has three layers, and skin is 150 ~ 200 order wire nettings, and middle level is 60 ~ 80 order wire nettings, and innermost layer is 150 ~ 200 order wire nettings,
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 2 ~ 3 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
The thickness of described film is 2.5 ~ 3.5mm, if film plastic discharge thickness is less than 2.5mm, then production efficiency can be made to reduce; Film stock thickness is greater than 3.5mm, then can not be complete cold because film is blocked up, and therefore 2.5 ~ 3.5mm is that compromise production efficiency and cooling result obtain optimal thickness.
Terpolymer EP rubber Third monomer content of the present invention is lower than 1%, and mooney viscosity [ML (1+4) 125 DEG C] (ML 1+4 when 125 DEG C) are 15 ~ 60, and ethylene content scope is between 60% ~ 80%.Have the following advantages:
1, terpolymer EP rubber be ethene, the propylene rubber elastomer that adds Third monomer again and synthesize, adding of usual Third monomer is for introducing double bond to use traditional method to carry out sulfuration to ethylene-propylene rubber(EPR).The content of Third monomer is higher, and the high temperature resistant and proof voltage ability of second third can decline to some extent, and in this recipe requirements Ethylene Propylene Terpolymer, the content of Third monomer is lower than 1%, is exactly the proof voltage ability for improving material.
2, mooney viscosity [ML (1+4) 125 DEG C] be 15 ~ 60 second third materials processing performance good.
3, middle pressure insulating material requires that the loss factor of material is less than 0.005, in Ethylene Propylene Terpolymer, when ethylene content is 40% ~ 60%, loss factor comparatively ethylene content is 60% ~ 80% want large, when ethylene content is greater than 80%, second third material of synthesis is exactly rigid plastics, thus choose ethylene content be 60% ~ 80% terpolymer EP rubber do the insulation of middle pressure second third CABLE MATERIALS.
Ethyl butyric rubber of the present invention is polymerized by ethene, butylene and Third monomer, and Third monomer content is lower than 0.3%, and its ethylene content is between 70% ~ 85%.Control Third monomer content and ethylene content are also mainly based on raising material withstand voltage properties and reduce spillage of material factor.
Promoting agent of the present invention is zinc oxide and stearic acid, and its ratio is 4:3 ~ 10:1.Stearic acid makes promoting agent also with the effect of lubrication, is equipped with and can produces synergistic effect adding of zinc oxide.
Strengthening agent of the present invention is white carbon black, preferentially selects thermal silica.Because the particle diameter of thermal silica is less than 100nm, specific surface area is 100 ~ 400m
2/ g, particle diameter is less, then reinforcing effect is better.
Beneficial effect of the present invention is:
1, technical process of the present invention is mixing-filter glue-air-cooled, first air-cooled technology is introduced adhesive-preparing technology, remove excessive moisture by air-cooled, reduce and may there is in the process of work material the hidden danger introducing impurity particle, effectively ensure that the quality of middle pressure ethyl-propylene insulating materials.
2, due in the type approval test of midium voltage cable, include shelf depreciation, the principal element affecting shelf depreciation experimental result is the macrobead composition in material, so the present invention carries out very strict control to the granular size of material.Present invention process adopts three metafiltration network technologies in filter glue process, and by the strict control to filter screen size, removes the large granular impurity that may exist in sizing material; Simultaneously in receipts glue process, abandon talcum powder separant, avoid the introducing of large granular impurity, ensure that the quality of material better.Finally make material possess excellent electric property, splendid heat aging performance, be applicable to mining midium voltage cable.
3, present invention process is when selection, and first using terpolymer EP rubber and the ethyl butyric rubber base-material as middle pressure second third Insulation Material, two kinds of rubber compatibilities are good, and process industrial art performance is excellent.And the maximum advantage of ethyl butyric rubber to be heat aging property good, unit price is more cheap than terpolymer EP rubber, is both ground, has saved cost what ensure rubber excellent properties.
4, the present invention is when to terpolymer EP rubber and ethyl butyric rubber selection, and the strict content controlling Third monomer, effectively improves proof voltage ability and the insulating power of material, effectively reduces the loss of material.
5, the present invention selects thermal silica as strengthening agent, and be because the particle diameter of thermal silica is less than 100nm, specific surface area is 100 ~ 400m
2/ g, particle diameter is less, then reinforcing effect is better.
6, the granular size of the present invention to filler strictly controls, select fine size, the calcium carbonate that index is clear and definite, talcum powder and calcined kaolin make filler, have stopped the existence of large granular impurity particle, and short grained material can disperse evenly, the performance of material is also better.The present invention selects zinc oxide and stearic acid as promoting agent, and control ratio is 4:3 ~ 10:1.Stearic acid makes promoting agent also with the effect of lubrication, is equipped with and can produces synergistic effect adding of zinc oxide, ensure that the dispersed of filler.
Embodiment
Below in conjunction with embodiment, essentiality content of the present invention is described in further detail.
Embodiment 1
A preparation method for middle pressure ethylene propylene rubber insulation material, processing step is as follows:
A is mixing
A) by terpolymer EP rubber 50 parts and ethyl butyric rubber 50 parts of input Banbury mixeies, mixing at 90 DEG C, evenly mixing;
B) then promoting agent 10 parts is dropped into Banbury mixer, filler 60 parts, evenly mixing.
C) 3 parts, paraffin, 20 parts, oxidation inhibitor, coupling agent 1.5 parts, fluidizer 10 parts, strengthening agent 20 parts is dropped into Banbury mixer, evenly mixing.
D) then drop into linking agent 3 parts and crosslinking coagent 2 parts to Banbury mixer, mixing 58s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Ground on page machine at three rollers by sizing material and turn over white silk, then through rubber strainer filter glue, filtering net is four layers, filter glue temperature controls at 90 DEG C.
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 2 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
Embodiment 2
A preparation method for middle pressure ethylene propylene rubber insulation material, processing step is as follows:
A is mixing
A) by terpolymer EP rubber 30 parts and ethyl butyric rubber 30 parts of input Banbury mixeies, mixing at 80 DEG C, evenly mixing;
B) then 4 parts of zinc oxide and 1 part of stearic acid is dropped into Banbury mixer, 20 parts of talcum powder and 30 parts of kaolin, evenly mixing.
C) 2 parts, paraffin, 10 parts, oxidation inhibitor, coupling agent 0.5 part, fluidizer 5 parts, strengthening agent 10 parts is dropped into Banbury mixer, evenly mixing.
D) then drop into linking agent 2 parts and crosslinking coagent 1 part to Banbury mixer, mixing 55s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Ground on page machine at three rollers by sizing material and turn over white silk, then through rubber strainer filter glue, filtering net is three layers, filter glue temperature controls at 80 DEG C.
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 2 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
Linking agent of the present invention is dicumyl peroxide (DCP) or two-tert-butyl peroxide diisopropylbenzene(DIPB) (BIBP) or the combination of the two.
Crosslinking coagent of the present invention is triallyl isocyanurate (TAIC) or triallyl cyanurate (TAC) or the combination of the two.
Processing aid of the present invention is solid paraffin.
Oxidation inhibitor of the present invention is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] arbitrary combination of pentaerythritol ester (antioxidant 1010) or 4,4'-thiobis (the 6-tertiary butyl-3-methylphenol) (antioxidant 300) or XH-3 or three.
Coupling agent of the present invention is the arbitrary combination of vinyltriacetoxy silane (A-151) or vinyltrimethoxy silane (A-171) or vinyl three (methoxy ethoxy) silane (A-172) or three.
Embodiment 3
A preparation method for middle pressure ethylene propylene rubber insulation material, processing step is as follows:
A is mixing
A) by terpolymer EP rubber 70 parts and ethyl butyric rubber 70 parts of input Banbury mixeies, mixing at 100 DEG C, evenly mixing;
B) then 10 parts of zinc oxide and 3 parts of stearic acid are dropped into Banbury mixer, 40 parts of calcium carbonate and 90 parts of kaolin, evenly mixing.
C) 8 parts, paraffin, 20 parts, oxidation inhibitor, coupling agent 3 parts, trioctyl trimellitate 15 parts, white carbon black 35 parts is dropped into Banbury mixer, evenly mixing.
D) then drop into linking agent 5 parts and crosslinking coagent 3 parts to Banbury mixer, mixing 65s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Ground on page machine at three rollers by sizing material and turn over white silk, then through rubber strainer filter glue, filtering net is three layers, filter glue temperature controls at 100 DEG C.
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 2 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
Linking agent of the present invention is dicumyl peroxide (DCP) or two-tert-butyl peroxide diisopropylbenzene(DIPB) (BIBP) or the combination of the two.
Crosslinking coagent of the present invention is triallyl isocyanurate (TAIC) or triallyl cyanurate (TAC) or the combination of the two.
Processing aid of the present invention is solid paraffin.
Oxidation inhibitor of the present invention is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] arbitrary combination of pentaerythritol ester (antioxidant 1010) or 4,4'-thiobis (the 6-tertiary butyl-3-methylphenol) (antioxidant 300) or XH-3 or three.
Coupling agent of the present invention is the arbitrary combination of vinyltriacetoxy silane (A-151) or vinyltrimethoxy silane (A-171) or vinyl three (methoxy ethoxy) silane (A-172) or three.
Embodiment 4
A preparation method for middle pressure ethylene propylene rubber insulation material, processing step is as follows:
A is mixing
A) by terpolymer EP rubber 45 parts and ethyl butyric rubber 50 parts of input Banbury mixeies, at 85 DEG C, mixing 2min, evenly mixing;
Described terpolymer EP rubber Third monomer content is lower than 1%, and mooney viscosity [ML (1+4) 125 DEG C] is 15, and ethylene content is 60%.
Described ethyl butyric rubber is polymerized by ethene, butylene and Third monomer, and Third monomer content is lower than 0.3%, and ethylene content is 70%.
B) then promoting agent 10 parts of zinc oxide and 1 part of stearic acid is dropped into Banbury mixer, 30 parts of calcium carbonate and 80 parts of kaolin, mixing 3min, evenly mixing.
C) 5 parts, paraffin, 15 parts, oxidation inhibitor, coupling agent 1.5 parts, trioctyl trimellitate 6 parts, thermal silica 25 parts is dropped into Banbury mixer, mixing 3min, evenly mixing.
D) then drop into linking agent 3 parts and crosslinking coagent 1.5 parts to Banbury mixer, mixing 60s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Ground on page machine at three rollers by sizing material and turn over white silk, then through rubber strainer filter glue, filtering net is 5 layers, filter glue temperature controls at 95 DEG C.
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 3 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
Embodiment 5
A preparation method for middle pressure ethylene propylene rubber insulation material, processing step is as follows:
A is mixing
A) by terpolymer EP rubber 65 parts and ethyl butyric rubber 60 parts of input Banbury mixeies, at 92 DEG C, mixing 2min, evenly mixing;
Described terpolymer EP rubber Third monomer content is lower than 1%, and mooney viscosity [ML (1+4) 125 DEG C] is 15, and ethylene content is 80%.
Described ethyl butyric rubber is polymerized by ethene, butylene and Third monomer, and Third monomer content is lower than 0.3%, and ethylene content is 85%.
B) then promoting agent 4 parts of zinc oxide and 3 parts of stearic acid are dropped into Banbury mixer, 20 parts of calcium carbonate, 20 parts of talcum powder and 80 parts of kaolin, mixing 3min, evenly mixing.
C) 7 parts, paraffin, 15 parts, oxidation inhibitor, coupling agent 2.5 parts, trioctyl trimellitate 12 parts, thermal silica 15 parts is dropped into Banbury mixer, mixing 3min, evenly mixing.
D) then drop into linking agent 4 parts and crosslinking coagent 1.5 parts to Banbury mixer, mixing 62s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Ground on page machine at three rollers by sizing material and turn over white silk, then through rubber strainer filter glue, filtering net is three layers, filter glue temperature controls at 85 DEG C.
Described filtering net skin is 150 order wire nettings, and middle level is 60 order wire nettings, and internal layer is 150 order wire nettings.
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 2 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
Embodiment 6
A preparation method for middle pressure ethylene propylene rubber insulation material, processing step is as follows:
A is mixing
A) by terpolymer EP rubber 56 parts and ethyl butyric rubber 62 parts of input Banbury mixeies, at 88 DEG C, mixing 3min, evenly mixing;
B) then promoting agent 8 parts of zinc oxide and 2 parts of stearic acid are dropped into Banbury mixer, 25 parts of calcium carbonate, 20 parts of talcum powder and 75 parts of kaolin, mixing 3min, evenly mixing.
C) 6 parts, paraffin, 18 parts, oxidation inhibitor, coupling agent 2.5 parts, trioctyl trimellitate 8 parts, thermal silica 26 parts is dropped into Banbury mixer, mixing 3min, evenly mixing.
D) then drop into linking agent 2.5 parts and crosslinking coagent 1.8 parts to Banbury mixer, mixing 58s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Ground on page machine at three rollers by sizing material and turn over white silk, then through rubber strainer filter glue, filtering net is three layers, filter glue temperature controls at 88 DEG C.
Described filtering net skin is 200 order wire nettings, and middle level is 80 order wire nettings, and internal layer is 200 order wire nettings.
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 3 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
Described talcum powder is rubber grade premium grads, 75 μm of testing sieve screenings massfraction≤0.1%.
Embodiment 7
A preparation method for middle pressure ethylene propylene rubber insulation material, processing step is as follows:
A is mixing
A) by terpolymer EP rubber 50 parts and ethyl butyric rubber 50 parts of input Banbury mixeies, at 92 DEG C, mixing 3min, evenly mixing;
B) then 8 parts of zinc oxide and 2 parts of stearic acid are dropped into Banbury mixer, 20 parts of calcium carbonate, 26.5 parts of talcum powder and 40 parts of kaolin, mixing 3min, evenly mixing.
C) 4 parts, paraffin, four [β-(3 are dropped into Banbury mixer, 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 6 is from part, 6 parts of XH-3,1.5 parts, vinyl three (methoxy ethoxy) silane, trioctyl trimellitate 12 parts, white carbon blacks 20 parts, mixing 3min, evenly mixing.
D) then drop into superoxide diisopropylbenzene(DIPB) 3 parts and triallyl isocyanurate 1 part to Banbury mixer, mixing 63s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Ground on page machine at three rollers by sizing material and turn over white silk, then through rubber strainer filter glue, filtering net is three layers, filter glue temperature controls at 80 ~ 100 DEG C.
Described filtering net skin is 160 order wire nettings, and middle level is 70 order wire nettings, and internal layer is 160 order wire nettings.
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 2 times, lower glue turns over white silk to another mill, and plastic emitting obtains the film that thickness is 3 ± 0.5mm, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
Described talcum powder is rubber grade premium grads, 75 μm of testing sieve screenings massfraction≤0.1%.
Described calcium carbonate is activated Calcium carbonate, 45 μm of testing sieve screenings massfraction≤0.2%, weight of iron mark < 0.08%, manganese massfraction < 0.006%, degree of activation massfraction >=96%.
Embodiment 8
A preparation method for middle pressure ethylene propylene rubber insulation material, processing step is as follows:
A is mixing
A) by terpolymer EP rubber 60 parts and ethyl butyric rubber 40 parts of input Banbury mixeies, at 96 DEG C, mixing 3min, evenly mixing;
B) then 8 parts of zinc oxide and 2 parts of stearic acid are dropped into Banbury mixer, 26.5 parts of activated Calcium carbonates, 30 parts of talcum powder and 30 parts of calcining top grade kaolin, mixing 3min, evenly mixing.
C) 2 ~ 8 parts, paraffin, 4 is dropped into Banbury mixer, 4'-thiobis (the 6-tertiary butyl-3-methylphenol) 6 parts and 6 parts of XH-3,0.5 part, vinyl three (methoxy ethoxy) silane, vinyltriacetoxy silane 1 part, trioctyl trimellitate 12 parts, white carbon blacks 20 parts, mixing 3min, evenly mixing.
D) then drop into two-tert-butyl peroxide diisopropylbenzene(DIPB) 3 parts and triallyl cyanurate 1 part to Banbury mixer, mixing 58s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Ground on page machine at three rollers by sizing material and turn over white silk, then through rubber strainer filter glue, filtering net is three layers, filter glue temperature controls at 86 DEG C.
Described filtering net skin is 180 order wire nettings, and middle level is 75 order wire nettings, and internal layer is 180 order wire nettings.
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 2 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
Described talcum powder is rubber grade premium grads, 75 μm of testing sieve screenings massfraction≤0.1%.
Described calcium carbonate is activated Calcium carbonate, 45 μm of testing sieve screenings massfraction≤0.2%, weight of iron mark < 0.08%, manganese massfraction < 0.006%, degree of activation massfraction >=96%.
Described kaolin is rubber industry calcining top grade kaolin, and 45 μm of testing sieve screenings massfraction≤3%, the content that particle diameter < is 2 μm is massfraction >=80%.
Embodiment 9
A preparation method for middle pressure ethylene propylene rubber insulation material, processing step is as follows:
A is mixing
A) by terpolymer EP rubber 40 parts and ethyl butyric rubber 60 parts of input Banbury mixeies, at 92 DEG C, mixing 2min, evenly mixing;
B) then 8 parts of zinc oxide and 2 parts of stearic acid are dropped into Banbury mixer, 21.5 parts of activated Calcium carbonates, 20 parts of talcum powder and 45 parts of calcining top grade kaolin, mixing 3min, evenly mixing.
C) 4 parts, paraffin, 4 is dropped into Banbury mixer, 4'-thiobis (the 6-tertiary butyl-3-methylphenol) 6 parts and four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester 6 parts, 1.5 parts, vinyl three (methoxy ethoxy) silane, trioctyl trimellitate 12 parts, white carbon black 20 parts, mixing 3min, evenly mixing.
D) then drop into superoxide diisopropylbenzene(DIPB) 3 parts and triallyl cyanurate 1 part to Banbury mixer, mixing 56s, then glue under Banbury mixer, obtains sizing material.
B filters glue
Ground on page machine at three rollers by sizing material and turn over white silk, then through rubber strainer filter glue, filtering net is three layers, filter glue temperature controls at 92 DEG C.
Described filtering net skin is 195 order wire nettings, and middle level is 72 order wire nettings, and internal layer is 195 order wire nettings.
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 3 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product.
Described talcum powder is rubber grade premium grads, 75 μm of testing sieve screenings massfraction≤0.1%.
Described calcium carbonate is activated Calcium carbonate, 45 μm of testing sieve screenings massfraction≤0.2%, weight of iron mark < 0.08%, manganese massfraction < 0.006%, degree of activation massfraction >=96%.
Described kaolin is rubber industry calcining top grade kaolin, and 45 μm of testing sieve screenings massfraction≤3%, the content that particle diameter < is 2 μm is massfraction >=80%.
Embodiment 10
Following table is material tests data obtained by embodiment 7-9:
rization condition: 180 DEG C aging 7 days.
Claims (9)
1. press a preparation method for ethylene propylene rubber insulation material in, it is characterized in that: processing step is as follows:
A is mixing
A) by terpolymer EP rubber 30 ~ 70 parts and ethyl butyric rubber 30 ~ 70 parts of input Banbury mixeies, mixing, evenly mixing at 80 DEG C ~ 100 DEG C;
B) then promoting agent 5 ~ 13 parts is dropped into Banbury mixer, filler 50 ~ 130 parts, evenly mixing;
C) 2 ~ 8 parts, paraffin, 10 ~ 20 parts, oxidation inhibitor, coupling agent 0.5 ~ 3 part, fluidizer 5 ~ 15 parts, strengthening agent 10 ~ 35 parts is dropped into Banbury mixer, evenly mixing;
D) then drop into linking agent 2 ~ 5 parts and crosslinking coagent 1 ~ 3 part to Banbury mixer, mixing 55s ~ 65s, then glue under Banbury mixer, obtains sizing material;
B filters glue
Sizing material is ground on page machine at three rollers and turns over white silk, then through rubber strainer filter glue, filtering net at least three layers, filter glue temperature controls at 80 ~ 100 DEG C;
C is air-cooled
The sizing material filtered is turned over white silk on a mill until, thin-pass 2 ~ 3 times, lower glue turns over white silk to another mill, and plastic emitting obtains film, and film, through air blast cooling, removes unnecessary moisture, receives glue, packs and get final product;
Described step B, filtering net has three layers, and skin is 150 ~ 200 order wire nettings, and middle level is 60 ~ 80 order wire nettings, and internal layer is 150 ~ 200 order wire nettings.
2. the preparation method of a kind of middle pressure ethylene propylene rubber insulation material according to claim 1, it is characterized in that: described terpolymer EP rubber Third monomer content is lower than 1%, mooney viscosity [ML (1+4) 125 DEG C] is 15 ~ 60, and ethylene content is 60% ~ 80%.
3. the preparation method of a kind of middle pressure ethylene propylene rubber insulation material according to claim 1, is characterized in that: described ethyl butyric rubber is polymerized by ethene, butylene and Third monomer, and Third monomer content is lower than 0.3%, and ethylene content is 70% ~ 85%.
4. the preparation method of a kind of middle pressure ethylene propylene rubber insulation material according to claim 1, it is characterized in that: described promoting agent is zinc oxide and stearic acid, its ratio is 4:3 ~ 10:1.
5. the preparation method of a kind of middle pressure ethylene propylene rubber insulation material according to claim 1, is characterized in that: described strengthening agent is thermal silica.
6. the preparation method of a kind of middle pressure ethylene propylene rubber insulation material according to claim 1, is characterized in that: described filler is any one or two kinds in talcum powder or calcium carbonate and kaolinic combination.
7. the preparation method of a kind of middle pressure ethylene propylene rubber insulation material according to claim 6, is characterized in that: described talcum powder is rubber grade premium grads, 75 μm of testing sieve screenings massfraction≤0.1%.
8. the preparation method of a kind of middle pressure ethylene propylene rubber insulation material according to claim 6, it is characterized in that: described calcium carbonate is activated Calcium carbonate, 45 μm of testing sieve screenings massfraction≤0.2%, weight of iron mark < 0.08%, manganese massfraction < 0.006%, degree of activation massfraction >=96%.
9. the preparation method of a kind of middle pressure ethylene propylene rubber insulation material according to claim 6, it is characterized in that: kaolin is rubber industry calcining top grade kaolin, 45 μm of testing sieve screenings massfraction≤3%, the content that particle diameter < is 2 μm is massfraction >=80%.
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| CN105218905A (en) * | 2014-06-04 | 2016-01-06 | 安徽弘博电缆集团有限公司 | A kind of preparation method of neoprene cable sheath material |
| CN109438855A (en) * | 2015-07-10 | 2019-03-08 | 中广核高新核材科技（苏州）有限公司 | The preparation method of soft type high thermal stability power cable low-smoke halogen-free material |
| CN105585752A (en) * | 2016-02-03 | 2016-05-18 | 安徽南洋电缆有限公司 | Formula of low temperature resistant fireproof power cable sheath |
| CN110229389A (en) * | 2019-07-03 | 2019-09-13 | 海南蓝岛环保产业股份有限公司 | A kind of rubber product and preparation method thereof based on organic calcium powder waste residue filler |
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