CN104403137A - Sealing rubber core used for rotating control head and preparation method thereof - Google Patents
Sealing rubber core used for rotating control head and preparation method thereof Download PDFInfo
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- CN104403137A CN104403137A CN201410524791.8A CN201410524791A CN104403137A CN 104403137 A CN104403137 A CN 104403137A CN 201410524791 A CN201410524791 A CN 201410524791A CN 104403137 A CN104403137 A CN 104403137A
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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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- 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
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
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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
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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
Abstract
The invention belongs to technical field of drilling well, and concretely relates to a sealing rubber core used for rotating a control head and a preparation method thereof. The sealing rubber core comprises the following raw materials by weight: 60-90 parts of smoked rubber sheet3#, 10-30 parts of hydrogenated butadiene-acrylonitrile rubber, 5-10 parts of zinc oxide, 1-3 parts of stearic acid, 2-4 parts of antioxidant 4020, 10-30 parts of carbon black N330, 20-30 parts of carbon black N550, 3-10 parts of softener DOS, 1-2 parts of promoter CZ, 1-3 parts of promoter DM, 1-2 parts of promoter TMTD, 0.4-1 part of vulcanizing agent S, and 0.5-1.5 parts of vulcanizing agent DTDM. The sealing rubber core has the advantages of high performance, long service life, high pressure-resistant value, strong corrosion resistant capability, high abrasion resistance and strong anti-tear performance.
Description
Technical field
The invention belongs to the technical field of drilling well, be specifically related to a kind of swivel control head special seal gum core and preparation method thereof.
Background technology
In recent years, air drilling, controlled pressure drilling technology and under-balanced drilling technology use at home present good development ascendant trend, use scale increasing.Air drilling is given prominence in Northeast Sichuan area, Xinjiang region result of use, has become in this area's oilfield prospecting developing the technical way of synergy of raising speed; Meanwhile, China more and more carrys out the exploitation more paying attention to coal-seam gas, and air drilling has obvious technical superiority in cbm development.Controlled pressure drilling technology is domestic active research and the modern technique applied in recent years.Under-balanced drilling technology is the drilling well new technology improving exploration and development benefit, so-called under-balanced drilling, just refer to the pore pressure of circulating pressure (comprising fluid column pressure and circulation back pressure) lower than stratum of drilling fluid in drilling process, keep the slight overflow in shaft bottom, production formations fluid is allowed to flow into well, and can ground be recycled to, ground can effectively control, and this technology is called Underbalanced Drilling Techniques.Compared with conventional drilling technologies, the major advantage of under-balanced drilling be can alleviate formation damage, increase oil well productivity, for correctly evaluate reservoir provide condition, improve rate of penetration, reduce or prevent pressure differential sticking.This technology is widely used at home.Implement above technology all to need to use swivel control head (or rotating BOP), swivel control head is the nucleus equipment implementing described technology.
Under-balanced drilling technology is a new technology with distinct economic and wide prospect of the application, is also the technology of an excessive risk, high investment, and implement this technology must have the equipment special that corresponding security, reliability are very high.The equipment implemented needed for under-balanced drilling mainly comprises: well head operating device and ground processing equipment, wherein well head operating device mainly refers to swivel control head or rotating BOP, they and original ring-like preventer, ram preventer, four-way etc. form wellhead blowout preventor group, its effect implements pressure-controlling to Oil/gas Well, accident is prevented, monitor, control, guarantee the safety of drilling people, drilling outfit and Oil/gas Well.
Swivel control head is the guarantee of under-balanced drilling safe construction, and packing unit is the most important thing especially, and packing unit is one of important factor of restriction swivel control head or the raising of rotating BOP performance.Maximum and the most expensive consumable accessory of most critical in swivel control head, consumption is packing unit, on swivel control head, the effect of special seal gum core is the annular space between sealing drilling tool and pit shaft, its principle relies on the shrink range between self and drilling tool to play sealing function, prevent the high pressure fluid leak gushed out in well, the quality of its sealing property directly has influence on the performance of swivel control head, and then has influence on the success or failure of under-balanced drilling technique; Therefore it is the consumable accessory the most key in under-balanced drilling specific equipment, consumption is maximum, price is the most expensive, is also one of most important mark of under-balanced drilling specific equipment state of the art.
The working conditions of swivel control head special seal gum core is very severe, and packing unit must have the features such as withstand voltage is high, resistance to corrosion is strong, resistance to abrasion is high, tear strength is strong, long service life.General a bite normal well about needs 6 ~ 8 glue cores according to statistics, and the glue of a bite well consumption sometimes core reaches more than 20, and the consumption costs of every mouthful of well glue core is very large.And existing swivel control head special seal gum core product performance are poor, work-ing life is lower.If packing unit lost efficacy, under-balance drilling operation cannot be proceeded; If packing unit is short for work-ing life, then need frequently to change glue core, affect normal operation, replacing glue core needs the blowout preventer below closing control head, switches flow process, if under-voltage value is larger, also need control well pressure of according to circumstances taking measures, add workload on the one hand, on the other hand owing to adding on-off times, easily cause the reliability decrease of blowout preventer, cause potential safety hazard.
As can be seen here, current problem demanding prompt solution is under the prerequisite ensureing property indices, how to improve the work-ing life of packing unit, obtains the special seal gum core that product performance are reliable, high life, price are low.
Summary of the invention
The object of the invention is to the problems such as, cost intensive poor for current swivel control head special seal gum core product performance, work-ing life is short, and provide a kind of swivel control head special seal gum core and preparation method thereof, sealing glue core performance is high; Long service life; Withstand voltage is high; Resistance to corrosion is strong; Resistance to abrasion is high; Tear strength is strong.
Technical scheme of the present invention is: a kind of swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 60 ~ 90 parts; Hydrogenated nitrile-butadiene rubber 10 ~ 30 parts; 5 ~ 10 parts, zinc oxide; Stearic acid 1 ~ 3 part; Antioxidant 4020 2 ~ 4 parts; Carbon black N330 10 ~ 30 parts; Carbon black N550 20 ~ 30 parts; Tenderizer DOS 3 ~ 10 parts; Accelerant CZ 1 ~ 2 part; Altax 1 ~ 3 part; Vulcanization accelerator TMTD 1 ~ 2 part; Vulcanizing agent S 0.4 ~ 1 part; Vulcanizing agent DTDM 0.5 ~ 1.5 part.
Described swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 60 parts; Hydrogenated nitrile-butadiene rubber 30 parts; 7 parts, zinc oxide; Stearic acid 3 parts; Antioxidant 4020 4 parts; Carbon black N330 30 parts; Carbon black N550 20 parts; Tenderizer DOS 5 parts; Accelerant CZ 1 part; Altax 1 part; Vulcanization accelerator TMTD 2 parts; Vulcanizing agent S 0.4 part; Vulcanizing agent DTDM 1.5 parts.
Described swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 80 parts; Hydrogenated nitrile-butadiene rubber 10 parts; 9 parts, zinc oxide; Stearic acid 2 parts; Antioxidant 4020 3 parts; Carbon black N33020 part; Carbon black N550 25 parts; Tenderizer DOS 8 parts; Accelerant CZ 2 parts; Altax 3 parts; Vulcanization accelerator TMTD 1 part; Vulcanizing agent S 1 part; Vulcanizing agent DTDM 0.5 part.
Described swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 70 parts; Hydrogenated nitrile-butadiene rubber 20 parts; 7 parts, zinc oxide; Stearic acid 2 parts; Antioxidant 4020 3 parts; Carbon black N33010 part; Carbon black N550 30 parts; Tenderizer DOS 9 parts; Accelerant CZ 1.5 parts; Altax 2 parts; Vulcanization accelerator TMTD 1.5 parts; Vulcanizing agent S 0.8 part; Vulcanizing agent DTDM 1 part.
Described swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 90 parts; Hydrogenated nitrile-butadiene rubber 10 parts; 10 parts, zinc oxide; Stearic acid 3 parts; Antioxidant 4020 3 parts; Carbon black N33025 part; Carbon black N550 15 parts; Tenderizer DOS 6 parts; Accelerant CZ 1.5 parts; Altax 2 parts; Vulcanization accelerator TMTD 1.5 parts; Vulcanizing agent S 0.6 part; Vulcanizing agent DTDM 1 part.
A preparation method for described swivel control head special seal gum core, comprises the following steps:
(1) rubber plastic steelmaking: roll spacing is adjusted to the smoke sheet rubber 3# of 0.2 ~ 0.3mm to well cutting and carry out first time thin-pass and plasticate, continuous thin-pass 12 ~ 15 times, slice parks 12 ~ 24 hours; Carry out second time thin-pass according to primary program again to plasticate, slice is parked to 12 ~ 24 hours, finally carries out third time thin-pass and plasticates;
(2) compounding rubber: first weigh by formula rate the smoke sheet rubber 3# and other materials that plasticate and check; Then in the following order each material is added Banbury mixer successively and carry out banburying: hydrogenated nitrile-butadiene rubber and the smoke sheet rubber 3# plasticated; Zinc oxide, antioxidant 4020 and stearic acid; Tenderizer DOS, carbon black N330 and carbon black N550; Vulcanizing agent S and vulcanizing agent DTDM; Banburying after 10 ~ 15 minutes discharging in mill; Add accelerant CZ, altax and Vulcanization accelerator TMTD to carry out mixing, thin-pass, play triangle bag, 3 ~ 5 times repeatedly; Slice parks at least 24 hours;
(3) rubber unvulcanizate inspection: rubber unvulcanizate is put into vulkameter, setting vulkameter temperature is 130 DEG C, and the time is 2 hours, measures its vulcanization curve; If vulcanization curve is steadily rise, be then up to the standards; Decline afterwards if first rise or curve unsmooth, then disqualified upon inspection; Rubber unvulcanizate is put into test piece die for special purpose, temperature 130 DEG C, carry out sulfuration and make test piece under the condition of 15 minutes time, test piece is placed after more than 1 hour in room temperature, measures its hardness, tensile strength, elongation at break and stress at definite elongation; Its inspecting standard is: hardness 75 ~ 80ShoreA; Tensile strength is not less than 15MPa; Elongation at break is not less than 300%; 100% stress at definite elongation is not less than 3MPa;
(4) prepare before sulfuration: with clean gauze and mold cleaning liquid cleaning mould, make noresidue glue slag in mould, rustless stain; Load vulcanizer by after empty for mould mould assembling, the temperature of setting vulcanizer is 120 DEG C, and pressure is 18MPa, and empty mould heats 6 hours; Associated metal accessory coats tackiness agent, dry, park 1 ~ 2 hour, must not have pollution in dry parking period; The glue mixed carried out mixing, thin-pass again, play triangle bag, 3 times repeatedly, then slice, cut out glue, weighing;
(5) sulfidation: successively according to following steps: Jin belongs to Pei Jian Installed mould; Rubber unvulcanizate loads mold injects chamber; Pressurization injecting glue; Exit 3 ~ 5 times; Sulfuration 4 hours; Finished product depanning; Inspection after construction.
In described step (1), thin-pass is plasticated and is adopted mill or Banbury mixer.
Thin-pass is plasticated employing mill in described step (1), first smoke sheet rubber 3# is preheated to 40 ~ 50 DEG C, then carries out thin-pass and plasticate.
Beneficial effect of the present invention is: whether the performance of swivel control head special seal gum core product reaches technical requirements, and key is that whether the first formula is reasonable; Whether the second rubber mixing technique is reasonable, and whether trisulfides technique is reasonable.The present invention according to the research of packing unit failure mechanism and analysis, has carried out creationary improvement and preferably to the formula of packing unit.
First swivel control head special seal gum core material of main part of the present invention adopts natural rubber and hydrogenated nitrile-butadiene rubber, the inefficacy of glue core is mainly due to rebound resilience that glue core needs gross distortion to become reconciled in use, in this case, first material will have high tensile strength, if tensile strength is low, material can be made to be destroyed when gross distortion, and the tensile strength of natural rubber and hydrogenated nitrile-butadiene rubber is all higher, again through black-reinforced and suitable vulcanization system, its tensile strength can reach 20MPa, the sealing of product and withstand voltage just ideal.By the reasonable coordination of reinforcement system and vulcanization system, the elongation at break of sizing material reaches 400%, and bounce impact elasticity can reach 55, and this just makes material can not be destroyed when gross distortion, and rebound resilience is fine, product can be returned to virgin state rapidly after gross distortion.Additionally by the choose reasonable to preventing aging system, material can be made after 100 DEG C × 72 hours aging, and aging coefficient is 0.9, and this just makes product deposit and keep good tensile strength and elongation in use procedure, and the work-ing life of product extends.
In the compounding rubber of preparation method by banburying with open the combination that glue mode refine in refining two kinds, improve refining glue efficiency, improve the uniformity coefficient of rubber unvulcanizate, and decrease the carbon black flying dust pollution in mixing process.
Consider that product is comparatively large, will ensure that in sulfidation the vulcanization system of sizing material will have longer incipient scorch phase and good sulfuration smooth phase, therefore vulcanization system adopts efficient vulcanization system.This vulcanization system has good incipient scorch phase and sulfuration smooth phase, can guarantee that material still keeps good performance index in long-time sulfidation like this.Due to the poor conductor that elastomeric material is heat, for ensureing that inside and outside sizing material, sulfuration is consistent, temperature-gradient method pattern is adopted to carry out sulfuration, first paragraph 110 DEG C keeps 40 minutes, then is warming up to 125 DEG C of maintenances 40 minutes, is again warming up to 140 DEG C and keeps 4 hours, sulfuration terminates, and goods are taken out in die sinking.
Swivel control head special seal gum core of the present invention has following specification, in table 1.Described swivel control head special seal gum core main performance index reaches imported product level, and specific performance index is respectively in table 2, table 3.The check data of described swivel control head special seal gum core is in table 4.
Table 1 swivel control head special seal gum of the present invention core specification and applicable elements.
| Specification mm | Φ115 | Φ105 | Φ73 | Φ62 |
| Be suitable for pipe | Φ 139.7mm drilling rod | Φ 127mm drilling rod | Φ 89mm drilling rod | Φ 73mm drilling rod or oil pipe |
Table 2 swivel control head special seal gum core performance index.
| Pressure rating | Working order | Joint number (individual) excessively on Special experimental platform |
| 1MPa | Dynamic seal | Be no less than 1200 |
| 17.5MPa | Dynamic seal | Be no less than 800 |
| 35MPa | Static seal | After reach work-ing life 50%, sealing load is not less than 35 |
| MPa |
Table 3: swivel control head special seal gum core product performance.
| Sequence number | Project | Data |
| 1 | Hardness (Shao Er) | 78 |
| 2 | Pull apart brute force (MPa) | 18 |
| 3 | Elongation (%) | 350 |
| 4 | Abrasion (cm 3/1.61Km) | 0.18 |
| 5 | Shock strength (%) | 38 |
| 6 | 300% stretches (MPa) surely | 11 |
| 7 | 100% stretches (MPa) surely | 4.5 |
| 8 | Tear strength (N/mm) | 4.2 |
Table 4: the product inspection data of described swivel control head Special seal.
| Sequence number | Project | Normal data | Check data |
| 1 | Hardness (Shao Er) | 75 | 78 |
| 2 | Pull apart brute force (Mpa) | 18 | 18 |
| 3 | Elongation (%) | 350 | 350 |
| 4 | Setafter break (%) | 15 | 15 |
| 5 | Abrasion (㎝ 3/1.61km) | 0.18 | 0.18 |
| 6 | Shock strength (%) | 36 | 38 |
| 7 | 300% stretches (Mpa) surely | 11 | 11 |
| 8 | 100% stretches (Mpa) surely | 4.5 | 4.5 |
| 9 | Tear strength (N/mm) | 4.2 | 4.2 |
Embodiment
Below by embodiment, the present invention will be described in detail.
Embodiment 1
A kind of swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 60 parts; Hydrogenated nitrile-butadiene rubber 10 parts; 5 parts, zinc oxide; Stearic acid 1 part; Antioxidant 4020 2 parts; Carbon black N33010 part; Carbon black N550 20 parts; Tenderizer DOS 3 parts; Accelerant CZ 1 part; Altax 1 part; Vulcanization accelerator TMTD 1 part; Vulcanizing agent S 0.4 part; Vulcanizing agent DTDM 0.5 part.
Embodiment 2
Described swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 60 parts; Hydrogenated nitrile-butadiene rubber 30 parts; 7 parts, zinc oxide; Stearic acid 3 parts; Antioxidant 4020 4 parts; Carbon black N330 30 parts; Carbon black N550 20 parts; Tenderizer DOS 5 parts; Accelerant CZ 1 part; Altax 1 part; Vulcanization accelerator TMTD 2 parts; Vulcanizing agent S 0.4 part; Vulcanizing agent DTDM 1.5 parts.
Embodiment 3
Described swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 80 parts; Hydrogenated nitrile-butadiene rubber 10 parts; 9 parts, zinc oxide; Stearic acid 2 parts; Antioxidant 4020 3 parts; Carbon black N33020 part; Carbon black N550 25 parts; Tenderizer DOS 8 parts; Accelerant CZ 2 parts; Altax 3 parts; Vulcanization accelerator TMTD 1 part; Vulcanizing agent S 1 part; Vulcanizing agent DTDM 0.5 part.
Embodiment 4
Smoke sheet rubber 3# 90 parts; Hydrogenated nitrile-butadiene rubber 10 parts; 10 parts, zinc oxide; Stearic acid 3 parts; Antioxidant 4020 3 parts; Carbon black N330 25 parts; Carbon black N550 15 parts; Tenderizer DOS 6 parts; Accelerant CZ 1.5 parts; Altax 2 parts; Vulcanization accelerator TMTD 1.5 parts; Vulcanizing agent S 0.6 part; Vulcanizing agent DTDM1 part.
Embodiment 5
Described swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 70 parts; Hydrogenated nitrile-butadiene rubber 20 parts; 7 parts, zinc oxide; Stearic acid 2 parts; Antioxidant 4020 3 parts; Carbon black N33010 part; Carbon black N550 30 parts; Tenderizer DOS 9 parts; Accelerant CZ 1.5 parts; Altax 2 parts; Vulcanization accelerator TMTD 1.5 parts; Vulcanizing agent S 0.8 part; Vulcanizing agent DTDM 1 part.
Embodiment 6
A kind of swivel control head special seal gum core, comprises the raw material of following weight part: smoke sheet rubber 3# 90 parts; Hydrogenated nitrile-butadiene rubber 30 parts; 10 parts, zinc oxide; Stearic acid 3 parts; Antioxidant 4020 4 parts; Carbon black N33030 part; Carbon black N55030 part; Tenderizer DOS 10 parts; Accelerant CZ 2 parts; Altax 3 parts; Vulcanization accelerator TMTD 2 parts; Vulcanizing agent S 1 part; Vulcanizing agent DTDM 1.5 parts.
Claims (8)
1. a swivel control head special seal gum core, is characterized in that, comprises the raw material of following weight part: smoke sheet rubber 3# 60 ~ 90 parts; Hydrogenated nitrile-butadiene rubber 10 ~ 30 parts; 5 ~ 10 parts, zinc oxide; Stearic acid 1 ~ 3 part; Antioxidant 4020 2 ~ 4 parts; Carbon black N330 10 ~ 30 parts; Carbon black N550 20 ~ 30 parts; Tenderizer DOS 3 ~ 10 parts; Accelerant CZ 1 ~ 2 part; Altax 1 ~ 3 part; Vulcanization accelerator TMTD 1 ~ 2 part; Vulcanizing agent S 0.4 ~ 1 part; Vulcanizing agent DTDM 0.5 ~ 1.5 part.
2. swivel control head special seal gum core according to claim 1, is characterized in that, comprise the raw material of following weight part: smoke sheet rubber 3# 60 parts; Hydrogenated nitrile-butadiene rubber 30 parts; 7 parts, zinc oxide; Stearic acid 3 parts; Antioxidant 4020 4 parts; Carbon black N330 30 parts; Carbon black N550 20 parts; Tenderizer DOS 5 parts; Accelerant CZ 1 part; Altax 1 part; Vulcanization accelerator TMTD 2 parts; Vulcanizing agent S 0.4 part; Vulcanizing agent DTDM 1.5 parts.
3. swivel control head special seal gum core according to claim 1, is characterized in that, comprise the raw material of following weight part: smoke sheet rubber 3# 80 parts; Hydrogenated nitrile-butadiene rubber 10 parts; 9 parts, zinc oxide; Stearic acid 2 parts; Antioxidant 4020 3 parts; Carbon black N330 20 parts; Carbon black N550 25 parts; Tenderizer DOS 8 parts; Accelerant CZ 2 parts; Altax 3 parts; Vulcanization accelerator TMTD 1 part; Vulcanizing agent S 1 part; Vulcanizing agent DTDM 0.5 part.
4. swivel control head special seal gum core according to claim 1, is characterized in that, comprise the raw material of following weight part: smoke sheet rubber 3# 70 parts; Hydrogenated nitrile-butadiene rubber 20 parts; 7 parts, zinc oxide; Stearic acid 2 parts; Antioxidant 4020 3 parts; Carbon black N330 10 parts; Carbon black N550 30 parts; Tenderizer DOS 9 parts; Accelerant CZ 1.5 parts; Altax 2 parts; Vulcanization accelerator TMTD 1.5 parts; Vulcanizing agent S 0.8 part; Vulcanizing agent DTDM 1 part.
5. swivel control head special seal gum core according to claim 1, is characterized in that, comprise the raw material of following weight part: smoke sheet rubber 3# 90 parts; Hydrogenated nitrile-butadiene rubber 10 parts; 10 parts, zinc oxide; Stearic acid 3 parts; Antioxidant 4020 3 parts; Carbon black N330 25 parts; Carbon black N550 15 parts; Tenderizer DOS 6 parts; Accelerant CZ 1.5 parts; Altax 2 parts; Vulcanization accelerator TMTD 1.5 parts; Vulcanizing agent S 0.6 part; Vulcanizing agent DTDM 1 part.
6. a preparation method for swivel control head special seal gum core described in claim 1, comprises the following steps:
(1) rubber plastic steelmaking: roll spacing is adjusted to the smoke sheet rubber 3# of 0.2 ~ 0.3mm to well cutting and carry out first time thin-pass and plasticate, continuous thin-pass 12 ~ 15 times, slice parks 12 ~ 24 hours; Carry out second time thin-pass according to primary program again to plasticate, slice is parked to 12 ~ 24 hours, finally carries out third time thin-pass and plasticates;
(2) compounding rubber: first weigh by formula rate the smoke sheet rubber 3# and other materials that plasticate and check; Then in the following order each material is added Banbury mixer successively and carry out banburying: the smoke sheet rubber 3# plasticated and hydrogenated nitrile-butadiene rubber; Zinc oxide, antioxidant 4020 and stearic acid; Tenderizer DOS, carbon black N330 and carbon black N550; Vulcanizing agent S and vulcanizing agent DTDM; Banburying after 10 ~ 15 minutes discharging in mill; Add accelerant CZ, altax and Vulcanization accelerator TMTD to carry out mixing, thin-pass, play triangle bag, 3 ~ 5 times repeatedly; Slice parks at least 24 hours;
(3) rubber unvulcanizate inspection: rubber unvulcanizate is put into vulkameter, setting vulkameter temperature is 130 DEG C, and the time is 2 hours, measures its vulcanization curve; If vulcanization curve is steadily rise, be then up to the standards; Decline afterwards if first rise or curve unsmooth, then disqualified upon inspection; Rubber unvulcanizate is put into test piece die for special purpose, temperature 130 DEG C, carry out sulfuration and make test piece under the condition of 15 minutes time, test piece is placed after more than 1 hour in room temperature, measures its hardness, tensile strength, elongation at break and stress at definite elongation; Its inspecting standard is: hardness 75 ~ 80ShoreA; Tensile strength is not less than 15MPa; Elongation at break is not less than 300%; 100% stress at definite elongation is not less than 3MPa;
(4) prepare before sulfuration: with clean gauze and mold cleaning liquid cleaning mould, make noresidue glue slag in mould, rustless stain; Load vulcanizer by after empty for mould mould assembling, the temperature of setting vulcanizer is 120 DEG C, and pressure is 18MPa, and empty mould heats 6 hours; Associated metal accessory coats tackiness agent, dry, park 1 ~ 2 hour, must not have pollution in dry parking period; The glue mixed carried out mixing, thin-pass again, play triangle bag, 3 times repeatedly, then slice, cut out glue, weighing;
(5) sulfidation: successively according to following steps: Jin belongs to Pei Jian Installed mould; Rubber unvulcanizate loads mold injects chamber; Pressurization injecting glue; Exit 3 ~ 5 times; Sulfuration 4 hours; Finished product depanning; Inspection after construction.
7. the preparation method of swivel control head special seal gum core according to claim 1, is characterized in that, in described step (1), thin-pass is plasticated and adopted mill or Banbury mixer.
8. the preparation method of swivel control head special seal gum core according to claim 7, is characterized in that, in described step (1), thin-pass is plasticated employing mill, first smoke sheet rubber 3# is preheated to 40 ~ 50 DEG C, then carries out thin-pass and plasticate.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106317511A (en) * | 2016-08-18 | 2017-01-11 | 天津市翔悦密封材料股份有限公司 | Delay solidification type sealant |
| CN110128725A (en) * | 2019-04-24 | 2019-08-16 | 四川新为橡塑有限公司 | The rubber compounding and its production mould and manufacturing method of a kind of rotary rubber core |
| CN111393730A (en) * | 2020-04-10 | 2020-07-10 | 雅安万利橡塑密封技术有限责任公司 | Special rotary blowout preventer rubber core material for oil-based mud |
| CN112593891A (en) * | 2020-12-28 | 2021-04-02 | 雅安万利橡塑密封技术有限责任公司 | Blowout prevention box rubber core sealing assembly |
| CN115716949A (en) * | 2022-11-24 | 2023-02-28 | 中国石油天然气集团有限公司 | Oil-resistant rubber core material, oil-resistant rubber core and preparation method and application thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106317511A (en) * | 2016-08-18 | 2017-01-11 | 天津市翔悦密封材料股份有限公司 | Delay solidification type sealant |
| CN106317511B (en) * | 2016-08-18 | 2018-05-08 | 天津市翔悦密封材料股份有限公司 | A kind of retardation of curing type sealant |
| CN110128725A (en) * | 2019-04-24 | 2019-08-16 | 四川新为橡塑有限公司 | The rubber compounding and its production mould and manufacturing method of a kind of rotary rubber core |
| CN111393730A (en) * | 2020-04-10 | 2020-07-10 | 雅安万利橡塑密封技术有限责任公司 | Special rotary blowout preventer rubber core material for oil-based mud |
| CN112593891A (en) * | 2020-12-28 | 2021-04-02 | 雅安万利橡塑密封技术有限责任公司 | Blowout prevention box rubber core sealing assembly |
| CN115716949A (en) * | 2022-11-24 | 2023-02-28 | 中国石油天然气集团有限公司 | Oil-resistant rubber core material, oil-resistant rubber core and preparation method and application thereof |
| CN115716949B (en) * | 2022-11-24 | 2024-04-16 | 中国石油天然气集团有限公司 | Oil-resistant rubber core material, oil-resistant rubber core, and preparation method and application thereof |
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| CN104403137B (en) | 2018-01-30 |
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Denomination of invention: The invention relates to a special sealant core for a rotary control head and a preparation method thereof Effective date of registration: 20220121 Granted publication date: 20180130 Pledgee: Lanshan Branch of Rizhao Bank Co.,Ltd. Pledgor: RIZHAO CHENHUI RUBBER Corp. Registration number: Y2022370010012 |