CN105542256A - Ageing-resistant buried NBR (nitrile butadiene rubber) cable sleeve - Google Patents
Ageing-resistant buried NBR (nitrile butadiene rubber) cable sleeve Download PDFInfo
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/049—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using steam or damp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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 an ageing-resistant buried NBR (nitrile butadiene rubber) cable sleeve. The cable sleeve is prepared from raw materials in parts by weight as follows: 50-60 parts of NBR, 20-25 parts of natural rubber, 20-25 parts of butyl rubber, 35-45 parts of carbon black N683, 20-30 parts of carbon black N880, 2-3 parts of engine oil, 1.5 parts of an anti-ageing agent, 4-6 parts of chlorinated paraffin, 15-20 parts of diatomite, 4.5 parts of stearic acid, 1-2 parts of an accelerant TMTD, 4-6 parts of magnesium oxide and 20-25 parts of modified kaolin. Four stages of mixing are performed, different raw materials are added at each stage, the mixing time of each stage is determined reasonably, and a rubber compound meeting the performance requirement is prepared within a shorter time while full mixing is realized.
Description
Technical field
The present invention relates to a kind of cable shoe, specifically the buried paracril cable shoe of a kind of aging-resistant.
Background technology
Nitrile rubber (NBR) is the interpolymer that divinyl and propylene are fine.Feature is that the performance of resistance to gasoline and aliphatic hydrocarbon oils is good especially, is only second to thiorubber, acrylate and viton, and is better than other conventional rubbers.Good heat resistance, resistance to air loss, wear-resisting and water tolerance etc. are all better, and cohesive force is strong.Shortcoming be cold-resistant and ozone resistance poor, powerful and elasticity is lower, acid resistance is poor, and electrical insulating property is bad, and resistance to polar solvent performance is also poor.Use temperature scope: about-30 DEG C ~+100 DEG C.Mainly for the manufacture of various oil-resistant article, as sebific duct, sealing article etc.
Because nitrile rubber has fabulous impermeable performance, but acid resistance is poor, powerful and elasticity is lower, therefore how to improve paracril for buried rubber cable sleeve pipe is the major issue that people face always, the invention provides a kind of buried paracril cable shoe of improvement for this reason, on the guarantee original pressuretightness basis of paracril, the paracril cable shoe processed is made to have good brute force and elasticity, and improve the acid and alkali-resistance ability in soil, improve the aging ability of against natural of himself from many aspects.
Summary of the invention
The object of the invention is to, provide a kind of aging-resistant buried paracril cable shoe, to achieve these goals, the technical solution used in the present invention is as follows:
The buried paracril cable shoe of a kind of aging-resistant, is made up of the raw material of following weight part: paracril, 50 ~ 60; Natural rubber, 20 ~ 25; Isoprene-isobutylene rubber, 20 ~ 25; Carbon black N683,35 ~ 45; Carbon black N880,20 ~ 30; Machine oil, 2 ~ 3; Anti-aging agent, 1.5; Clorafin, 4 ~ 6; Diatomite, 15 ~ 20; Stearic acid, 4.5; Vulcanization accelerator TMTD, 1 ~ 2; Magnesium oxide, 4 ~ 6; Modified kaolin, 20 ~ 25.
As preferably, described anti-aging agent to be mixed according to weight part ratio 1:2 by antioxidant NBC and antioxidant D and forms.
The preparation method of described modified kaolin is:
(1) first kaolin is pulverized, until abrasive particle degree is less than 300 orders, obtain superfine kaolin grinding distribution powder, then roasting 30 minutes under 600 DEG C of high temperature, again by the technical hydrochloric acid of roasting lapping powder and concentration 35% by weight 1:3 prepare burden, about 90 DEG C acidleach 8 hours;
(2) again by the mixed solution of acidleach and particulate matter wherein through neutralization, filter, white carbon black that washing, drying obtain roughing;
(3) white carbon black that step (2) obtains is added silane coupling agent, the consumption of silane coupling agent adds 0.5 ~ 1.5g silane coupling agent according to the white carbon black of every 100g roughing, add silane coupling agent grinding distribution 2 ~ 3 hours, finally obtain modified kaolin.
The buried paracril cable shoe of above-mentioned aging-resistant, preparation method is:
Step one, batching preparation
According to weight by anti-aging agent, diatomite, 1/3 stearic acid, Vulcanization accelerator TMTD, antioxidant NBC, antioxidant D put into container and mix evenly;
Step 2, initially mixing
According to weight, paracril, natural rubber, isoprene-isobutylene rubber are put into Banbury mixer and first carried out mixing plasticizing, the batching adding step one mixing after having plastified again proceeds mixing;
Step 3, to add weighting agent mixing
By initially mixing complete after rubber adds machine oil by weight ratio, clorafin carries out mixing again;
Step 4, to add strengthening agent mixing
By adding, the mixing rubber completed of weighting agent adds carbon black N683, carbon black N880, modified kaolin carries out mixing again;
Step 5, finally to add vulcanizing agent mixing
Last add magnesium oxide by weight, the stearic acid of residue 2/3 carries out mixing again, mixing rear sizing material is cut into adhesive tape, and feeding filter rubber machine carries out filter rubber;
Step 6, making film
From the sizing material that filter rubber machine is extruded, then be cut into adhesive tape through bale splitter, and then be pressed into slice after film through rolling page machine, cooling, parks at least 24 hours;
Step 7, making sleeve pipe
Film is fed rubber extruding machine, cross-head temperature is 90 DEG C ± 2 DEG C, fluxing zone temperature also needs to remain on 80 DEG C ± 2 DEG C, extruder temperature 70 DEG C ± 2 DEG C, screw speed 50 revs/min, obtain the pipe of buried paracril sleeve pipe after extruding, the pipe storage period is no more than 6 hours, finally pipe is enclosed within plug, in the steam vulcanization tank of 90 ~ 110 DEG C, obtains buried paracril sleeve pipe through the sulfuration of 40 ~ 50 DEG C.
Wherein main raw material(s) source:
Paracril, Shanghai low coverage International Trading Company Ltd;
Natural rubber, Shanghai Dong Hu Industrial Co., Ltd.;
Isoprene-isobutylene rubber (american exxon 1068), Shanghai Zheng Shang Chemical Industry Science Co., Ltd
The technical indicator of this kind of isoprene-isobutylene rubber is as follows:
Antioxidant NBC, Jinan Rui Bo Chemical Co., Ltd.;
Antioxidant D, Guangzhou Dong Xin Chemical Co., Ltd.;
Clorafin, Jiaozhou Futian Chemical Co., Ltd.;
Vulcanization accelerator TMTD, Guangdong Du Ba novel material Science and Technology Ltd.;
Carbon black N683, carbon black N880, sky, Tianjin century Chemicals development in science and technology company limited.
The present invention is mixing by four-stage, and each stage adds different raw materials, again by reasonably determining the mixing time in each stage, meet mixing sufficient while, prepare the rubber unvulcanizate meeting performance requriements in the short period of time, various Synergist S-421 95 has been dispersed in sizing material all, mixing time is extended if continue, then bad impact is produced on the performance of sizing material, by optimizing mixing time, avoid causing sizing material " to cross refining ", rubber molecule is prevented to be damaged, and both reduced the consumption of the energy like this, fully ensure that again the physical and mechanical properties of sizing material, by adding carbon black N683, carbon black N880, antioxidant NBC, antioxidant D, modified kaolin etc., greatly reduce the pick up of paracril cable shoe, the reduction of pick up adds the ability of the antiacid alkali of paracril cable shoe, and then improves the aging ability of against natural of paracril cable shoe self from many aspects.
Embodiment
Example 1
The buried paracril cable shoe of a kind of aging-resistant, is made up of the raw material of following weight part: paracril, 50; Natural rubber, 25; Isoprene-isobutylene rubber, 20; Carbon black N683,35; Carbon black N880,20; Machine oil, 2; Antioxidant NBC, 0.5; Antioxidant D, 1; Clorafin, 4; Diatomite, 15; Stearic acid, 4.5; Vulcanization accelerator TMTD, 1; Magnesium oxide, 4; Modified kaolin, 20.
The preparation method of above-mentioned modified kaolin is:
(1) first kaolin is pulverized, until abrasive particle degree is less than 300 orders, obtain superfine kaolin grinding distribution powder, then roasting 30 minutes under 600 DEG C of high temperature, again by the technical hydrochloric acid of roasting lapping powder and concentration 35% by weight 1:3 prepare burden, about 90 DEG C acidleach 8 hours;
(2) again by the mixed solution of acidleach and particulate matter wherein through neutralization, filter, white carbon black that washing, drying obtain roughing;
(3) white carbon black that step (2) obtains is added silane coupling agent, the consumption of silane coupling agent adds 0.5 ~ 1.5g silane coupling agent according to the white carbon black of every 100g roughing, add silane coupling agent grinding distribution 2 ~ 3 hours, finally obtain modified kaolin.
The buried paracril cable shoe of above-mentioned aging-resistant, preparation method is:
Step one, batching preparation
According to weight by anti-aging agent, diatomite, 1/3 stearic acid, Vulcanization accelerator TMTD, antioxidant NBC, antioxidant D put into container and mix evenly;
Step 2, initially mixing
According to weight, paracril, natural rubber, isoprene-isobutylene rubber are put into Banbury mixer and first carried out mixing plasticizing, the batching adding step one mixing after having plastified again proceeds mixing, and mixing time is 5 ~ 6 minutes;
Step 3, to add weighting agent mixing
By initially mixing complete after rubber adds machine oil by weight ratio, clorafin carries out mixing again, mixing time is 8 ~ 10 minutes;
Step 4, to add strengthening agent mixing
By adding, the mixing rubber completed of weighting agent adds carbon black N683, carbon black N880, modified kaolin carries out mixing again, and mixing time is 5 ~ 6 minutes;
Step 5, finally to add vulcanizing agent mixing
Last add magnesium oxide by weight, the stearic acid of residue 2/3 carries out mixing again, mixing time is 8 ~ 10 minutes, and mixing rear sizing material is cut into adhesive tape, and feeding filter rubber machine carries out filter rubber;
Step 6, making film
From the sizing material that filter rubber machine is extruded, then be cut into adhesive tape through bale splitter, and then be pressed into slice after film through rolling page machine, cooling, parks at least 24 hours;
Step 7, making sleeve pipe
Film is fed rubber extruding machine, cross-head temperature is 90 DEG C ± 2 DEG C, fluxing zone temperature also needs to remain on 80 DEG C ± 2 DEG C, extruder temperature 70 DEG C ± 2 DEG C, screw speed 50 revs/min, obtain the pipe of buried paracril sleeve pipe after extruding, the pipe storage period is no more than 6 hours, finally pipe is enclosed within plug, in the steam vulcanization tank of 90 ~ 110 DEG C, obtains buried paracril sleeve pipe through the sulfuration of 40 ~ 50 DEG C.
The pick up that the sleeve pipe of the present embodiment soaks 7 days in the chemical solution of 60 DEG C 15% is only about 0.0012%, and the lower erosion resistance of pick up is stronger; The test on bushing of the present embodiment the results are shown in Table 1, table 2.
Table 1
Table 2
| Test item | Requirement | Actual measurement (exemplar 1) | Actual measurement (exemplar 2) |
| Low temperature (-40 DEG C × 24h) | Flawless | Flawless | Flawless |
| Pulse testing (internal temperature: 180 DEG C, outside temperature: 100 DEG C, test pressure: 2.5bar, frequency: 0.5 ~ 1Hz medium: air) | Circulate 200,000 times, flawless | Circulate 200,000 times, flawless | Circulate 200,000 times, flawless |
Example 2
The buried paracril cable shoe of a kind of aging-resistant, is made up of the raw material of following weight part: paracril, 60; Natural rubber, 20; Isoprene-isobutylene rubber, 25; Carbon black N683,45; Carbon black N880,30; Machine oil, 3; Antioxidant NBC, 0.5; Antioxidant D, 1; Clorafin, 6; Diatomite, 20; Stearic acid, 4.5; Vulcanization accelerator TMTD, 2; Magnesium oxide, 6; Modified kaolin, 25.
The preparation method of above-mentioned modified kaolin is:
(1) first kaolin is pulverized, until abrasive particle degree is less than 300 orders, obtain superfine kaolin grinding distribution powder, then roasting 30 minutes under 600 DEG C of high temperature, again by the technical hydrochloric acid of roasting lapping powder and concentration 35% by weight 1:3 prepare burden, about 90 DEG C acidleach 8 hours;
(2) again by the mixed solution of acidleach and particulate matter wherein through neutralization, filter, white carbon black that washing, drying obtain roughing;
(3) white carbon black that step (2) obtains is added silane coupling agent, the consumption of silane coupling agent adds 0.5 ~ 1.5g silane coupling agent according to the white carbon black of every 100g roughing, add silane coupling agent grinding distribution 2 ~ 3 hours, finally obtain modified kaolin.
The buried paracril cable shoe of above-mentioned aging-resistant, preparation method is:
Step one, batching preparation
According to weight by anti-aging agent, diatomite, 1/3 stearic acid, Vulcanization accelerator TMTD, antioxidant NBC, antioxidant D put into container and mix evenly;
Step 2, initially mixing
According to weight, paracril, natural rubber, isoprene-isobutylene rubber are put into Banbury mixer and first carried out mixing plasticizing, the batching adding step one mixing after having plastified again proceeds mixing, and mixing time is 5 ~ 6 minutes;
Step 3, to add weighting agent mixing
By initially mixing complete after rubber adds machine oil by weight ratio, clorafin carries out mixing again, mixing time is 8 ~ 10 minutes;
Step 4, to add strengthening agent mixing
By adding, the mixing rubber completed of weighting agent adds carbon black N683, carbon black N880, modified kaolin carries out mixing again, and mixing time is 5 ~ 6 minutes;
Step 5, finally to add vulcanizing agent mixing
Last add magnesium oxide by weight, the stearic acid of residue 2/3 carries out mixing again, mixing time is 8 ~ 10 minutes, and mixing rear sizing material is cut into adhesive tape, and feeding filter rubber machine carries out filter rubber;
Step 6, making film
From the sizing material that filter rubber machine is extruded, then be cut into adhesive tape through bale splitter, and then be pressed into slice after film through rolling page machine, cooling, parks at least 24 hours;
Step 7, making sleeve pipe
Film is fed rubber extruding machine, cross-head temperature is 90 DEG C ± 2 DEG C, fluxing zone temperature also needs to remain on 80 DEG C ± 2 DEG C, extruder temperature 70 DEG C ± 2 DEG C, screw speed 50 revs/min, obtain the pipe of buried paracril sleeve pipe after extruding, the pipe storage period is no more than 6 hours, finally pipe is enclosed within plug, in the steam vulcanization tank of 90 ~ 110 DEG C, obtains buried paracril sleeve pipe through the sulfuration of 40 ~ 50 DEG C.
The pick up that the sleeve pipe of the present embodiment soaks 7 days in the chemical solution of 60 DEG C 15% is only about 0.0011%, and the lower erosion resistance of pick up is stronger; The test on bushing of the present embodiment the results are shown in Table 1, table 2.
Table 1
Table 2
| Test item | Requirement | Actual measurement (exemplar 1) | Actual measurement (exemplar 2) |
| Low temperature (-40 DEG C × 24h) | Flawless | Flawless | Flawless |
| Pulse testing (internal temperature: 180 DEG C, outside temperature: 100 DEG C, test pressure: 2.5bar, frequency: 0.5 ~ 1Hz medium: air) | Circulate 200,000 times, flawless | Circulate 200,000 times, flawless | Circulate 200,000 times, flawless |
Example 3
The buried paracril cable shoe of a kind of aging-resistant, is made up of the raw material of following weight part: paracril, 55; Natural rubber, 22; Isoprene-isobutylene rubber, 23; Carbon black N683,40; Carbon black N880,25; Machine oil, 3; Antioxidant NBC, 0.5; Antioxidant D, 1; Clorafin, 5; Diatomite, 18; Stearic acid, 4.5; Vulcanization accelerator TMTD, 2; Magnesium oxide, 5; Modified kaolin, 22.
The preparation method of above-mentioned modified kaolin is:
(1) first kaolin is pulverized, until abrasive particle degree is less than 300 orders, obtain superfine kaolin grinding distribution powder, then roasting 30 minutes under 600 DEG C of high temperature, again by the technical hydrochloric acid of roasting lapping powder and concentration 35% by weight 1:3 prepare burden, about 90 DEG C acidleach 8 hours;
(2) again by the mixed solution of acidleach and particulate matter wherein through neutralization, filter, white carbon black that washing, drying obtain roughing;
(3) white carbon black that step (2) obtains is added silane coupling agent, the consumption of silane coupling agent adds 0.5 ~ 1.5g silane coupling agent according to the white carbon black of every 100g roughing, add silane coupling agent grinding distribution 2 ~ 3 hours, finally obtain modified kaolin.
The buried paracril cable shoe of above-mentioned aging-resistant, preparation method is:
Step one, batching preparation
According to weight by anti-aging agent, diatomite, 1/3 stearic acid, Vulcanization accelerator TMTD, antioxidant NBC, antioxidant D put into container and mix evenly;
Step 2, initially mixing
According to weight, paracril, natural rubber, isoprene-isobutylene rubber are put into Banbury mixer and first carried out mixing plasticizing, the batching adding step one mixing after having plastified again proceeds mixing, and mixing time is 5 ~ 6 minutes;
Step 3, to add weighting agent mixing
By initially mixing complete after rubber adds machine oil by weight ratio, clorafin carries out mixing again, mixing time is 8 ~ 10 minutes;
Step 4, to add strengthening agent mixing
By adding, the mixing rubber completed of weighting agent adds carbon black N683, carbon black N880, modified kaolin carries out mixing again, and mixing time is 5 ~ 6 minutes;
Step 5, finally to add vulcanizing agent mixing
Last add magnesium oxide by weight, the stearic acid of residue 2/3 carries out mixing again, mixing time is 8 ~ 10 minutes, and mixing rear sizing material is cut into adhesive tape, and feeding filter rubber machine carries out filter rubber;
Step 6, making film
From the sizing material that filter rubber machine is extruded, then be cut into adhesive tape through bale splitter, and then be pressed into slice after film through rolling page machine, cooling, parks at least 24 hours;
Step 7, making sleeve pipe
Film is fed rubber extruding machine, cross-head temperature is 90 DEG C ± 2 DEG C, fluxing zone temperature also needs to remain on 80 DEG C ± 2 DEG C, extruder temperature 70 DEG C ± 2 DEG C, screw speed 50 revs/min, obtain the pipe of buried paracril sleeve pipe after extruding, the pipe storage period is no more than 6 hours, finally pipe is enclosed within plug, in the steam vulcanization tank of 90 ~ 110 DEG C, obtains buried paracril sleeve pipe through the sulfuration of 40 ~ 50 DEG C.
The pick up that the sleeve pipe of the present embodiment soaks 7 days in the chemical solution of 60 DEG C 15% is only about 0.001%, and the lower erosion resistance of pick up is stronger; The test on bushing of the present embodiment the results are shown in Table 1, table 2.
Table 1
Table 2
| Test item | Requirement | Actual measurement (exemplar 1) | Actual measurement (exemplar 2) |
| Low temperature (-40 DEG C × 24h) | Flawless | Flawless | Flawless |
| Pulse testing (internal temperature: 180 DEG C, outside temperature: 100 DEG C, test pressure: 2.5bar, frequency: 0.5 ~ 1Hz medium: air) | Circulate 200,000 times, flawless | Circulate 200,000 times, flawless | Circulate 200,000 times, flawless |
The foregoing is only the schematic embodiment of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.
Claims (5)
1. the buried paracril cable shoe of aging-resistant, is characterized in that, be made up: paracril, 50 ~ 60 of the raw material of following weight part; Natural rubber, 20 ~ 25; Isoprene-isobutylene rubber, 20 ~ 25; Carbon black N683,35 ~ 45; Carbon black N880,20 ~ 30; Machine oil, 2 ~ 3; Anti-aging agent, 1.5; Clorafin, 4 ~ 6; Diatomite, 15 ~ 20; Stearic acid, 4.5; Vulcanization accelerator TMTD, 1 ~ 2; Magnesium oxide, 4 ~ 6; Modified kaolin, 20 ~ 25.
2. the buried paracril cable shoe of a kind of aging-resistant as claimed in claim 1, is characterized in that: described anti-aging agent is made up of according to weight part ratio 1:2 mixing antioxidant NBC and antioxidant D.
3. the buried paracril cable shoe of a kind of aging-resistant as claimed in claim 1 or 2, is characterized in that, the preparation method of described modified kaolin is:
(1) first kaolin is pulverized, until abrasive particle degree is less than 300 orders, obtain superfine kaolin grinding distribution powder, then roasting 30 minutes under 600 DEG C of high temperature, again by the technical hydrochloric acid of roasting lapping powder and concentration 35% by weight 1:3 prepare burden, about 90 DEG C acidleach 8 hours;
(2) again by the mixed solution of acidleach and particulate matter wherein through neutralization, filter, white carbon black that washing, drying obtain roughing;
(3) white carbon black that step (2) obtains is added silane coupling agent, the consumption of silane coupling agent adds 0.5 ~ 1.5g silane coupling agent according to the white carbon black of every 100g roughing, add silane coupling agent grinding distribution 2 ~ 3 hours, finally obtain modified kaolin.
4. the buried paracril cable shoe of a kind of aging-resistant as claimed in claim 3, is characterized in that:
Preparation method is:
Step one, batching preparation
According to weight by anti-aging agent, diatomite, 1/3 stearic acid, Vulcanization accelerator TMTD, antioxidant NBC, antioxidant D put into container and mix evenly;
Step 2, initially mixing
According to weight, paracril, natural rubber, isoprene-isobutylene rubber are put into Banbury mixer and first carried out mixing plasticizing, the batching adding step one mixing after having plastified again proceeds mixing;
Step 3, to add weighting agent mixing
By initially mixing complete after rubber adds machine oil by weight ratio, clorafin carries out mixing again;
Step 4, to add strengthening agent mixing
By adding, the mixing rubber completed of weighting agent adds carbon black N683, carbon black N880, modified kaolin carries out mixing again;
Step 5, finally to add vulcanizing agent mixing
Last add magnesium oxide by weight, the stearic acid of residue 2/3 carries out mixing again, mixing rear sizing material is cut into adhesive tape, and feeding filter rubber machine carries out filter rubber;
Step 6, making film
From the sizing material that filter rubber machine is extruded, then be cut into adhesive tape through bale splitter, and then be pressed into slice after film through rolling page machine, cooling, parks at least 24 hours;
Step 7, making sleeve pipe
Film is fed rubber extruding machine, cross-head temperature is 90 DEG C ± 2 DEG C, fluxing zone temperature also needs to remain on 80 DEG C ± 2 DEG C, extruder temperature 70 DEG C ± 2 DEG C, screw speed 50 revs/min, obtain the pipe of buried paracril sleeve pipe after extruding, the pipe storage period is no more than 6 hours, finally pipe is enclosed within plug, in the steam vulcanization tank of 90 ~ 110 DEG C, obtains buried paracril sleeve pipe through the sulfuration of 40 ~ 50 DEG C.
5. the buried paracril cable shoe of a kind of aging-resistant as claimed in claim 4, it is characterized in that: described step 2 mixing time is 5 ~ 6 minutes, described step 3 mixing time is 8 ~ 10 minutes, described step 4 mixing time is 5 ~ 6 minutes, and described step 5 mixing time is 8 ~ 10 minutes.
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| CN201610122870.5A CN105542256A (en) | 2016-03-04 | 2016-03-04 | Ageing-resistant buried NBR (nitrile butadiene rubber) cable sleeve |
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| CN201610122870.5A CN105542256A (en) | 2016-03-04 | 2016-03-04 | Ageing-resistant buried NBR (nitrile butadiene rubber) cable sleeve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106256527A (en) * | 2015-06-19 | 2016-12-28 | 镇江耀华密封电器有限公司 | A kind of preparation method of rubber seal |
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