CN106317511A - Delay solidification type sealant - Google Patents
Delay solidification type sealant Download PDFInfo
- Publication number
- CN106317511A CN106317511A CN201610695721.8A CN201610695721A CN106317511A CN 106317511 A CN106317511 A CN 106317511A CN 201610695721 A CN201610695721 A CN 201610695721A CN 106317511 A CN106317511 A CN 106317511A
- Authority
- CN
- China
- Prior art keywords
- sealant
- retardation
- rubber
- curing type
- weight ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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 discloses delay solidification type sealant. The delay solidification type sealant is characterized in that rubber is taken as a base material and sulphur as a vulcanizing agent, and a vulcanization accelerator containing vulcanizing agent CA is matched. By the arrangement, solidification speed of an injection agent can be reduced at high temperature, and long-time fluidity of the injection agent before solidification is met.
Description
Technical field
The present invention relates to a kind of sealant, particularly to a kind of retardation of curing type sealant.
Background technology
At present, the various positions such as equipment in process units, pipeline, valve, when causing leakage because of certain reason, leakage is situated between
Matter band temperature, with pressure and outside jet flow state.Leakage position: the hole on flange, equipment, pipeline, weld defect, screw thread connect
Head gland leakage etc..Leaking medium: water, water vapour, air, oxygen, nitrogen, coal gas, ammonia, liquefied gas, gasoline, diesel oil, coal
Oil, heavy oil, lubricating oil, acid, alkali, esters, alcohols, benzene class, various heat carrier, various Hydrocarbon, various chemical gas, liquid
The leakage part of the All Medias such as body can go to eliminate by this technology.Can utilize the closed cavity that leakage position is original, or
Set up a cavity closed on leakage position, with the external thrust more than medium system pressure, will have plasticity, curable,
The sealant being resistant to leaking medium and temperature injects and is full of closing space, and blocking leakage defect and passage, sealant is necessarily
Under conditions of, solidify rapidly, leakage position is set up the new sealing structure of, eliminates the leakage of medium.Do not stop
Car on-line pressure sealant technology is the sophisticated equipment maintenance technique that middle nineteen seventies grows up, when setting of process units and enterprise
During the leakage of standby, pipeline various position, can not affect in the case of production carries out, band temperature, with pressure, rapid, peace not parking
Entirely, reliably stop a leak.
Sealant is the important component part of on-line pressure sealant technology application, and thermohardening type sealant applies to high temperature, height
The effective special injecting of pressure system media leakage closure.The performance of sealant plugging action is to contain leakage position shape at fixture
In the cavity become.Being injected in cavity by injecting sealant by special injecting instrument, by filling, extruding is to cavity wall and leaks surface
Produce the seal pressure suitable with leak pressure, terminate leakage.
Repair process units fluid media (medium) by not parking on-line pressure sealant technology to leak, the agent injecting type Sealing Method that use more, real
Execute closure operation.This encapsulating method adaptive temperature from-180 DEG C～800 DEG C, each under the conditions of-0.1MPa～35MPa of pressure
Plant the leakage sealed construction of fluid media (medium).But construction procedure is complicated, including fixture mounting and adjusting orientation, injecting operation it is noted that
Fltting speed and the coordination of sealant cures time, carry out effect observation and after-teeming compress after completing injecting.Any of which ring
Joint control is improper will affect closure quality, and this not only jeopardizes operating personnel and special equipment safe operation, is also unfavorable for resource
Save and environmental conservation.
Sealant is filled in cavity, extrusion process due to contact temperature action, make curing rate improve, mobility by
Step reduces.And the curing rate of injecting improves, be contradiction with filling up the mobility of cavity all required injectings, and existing should
For the injecting sealant of high temperature closure, in the case of satisfied leakage temperature, it is impossible to solve injecting process injecting curing rate
Harmonious problem with injecting mobility.Owing to curing rate is very fast, filling quality is difficult to ensure that, after often closure occurring
Also leak.Therefore, it is necessary to a kind of retardation of curing type injecting sealant of exploitation.
Summary of the invention
The present invention solves that technical problem present in known technology provides a kind of retardation of curing type sealant.
The present invention solves that technical problem is adopted the technical scheme that present in known technology: a kind of retardation of curing type
Sealant, this sealant is with rubber as matrix material, with sulfur as vulcanizing agent, adapted vulcanization accelerator, described vulcanization accelerator
Include accelerator CZ.
In this sealant, the weight ratio of sulfur, vulcanization accelerator part and rubber is 1.9～2.0:3.0～3.4:100, its
Middle accelerator CZ weight accounting in vulcanization accelerator is 15%～28%.
Described vulcanization accelerator includes following component: tetramethyl thiuram disulfide, dibenzothiazyl disulfide, N-ring
Ethylenebis dithiocarbamate phthalimide and N cyclohexyl 2 benzothiazole sulfenamide, tetramethyl thiuram disulfide, two sulfur
Changing bisbenzothiazole, N-ring ethylenebis dithiocarbamate phthalimide and N cyclohexyl 2 benzothiazole sulfenamide weight ratio is
1.0:1.0:0.8:0.5～1.0.
Above-mentioned sealant also includes reinforcing filler, softening agent and activator, reinforcing filler, softening agent, activator with
Rubber weight ratio is 100～108:18～20:14～16:100.
Described reinforcing filler includes following component: carbon black, expanded graphite, potter's clay and Pulvis Talci, carbon black, expanded graphite,
Potter's clay and talcous weight ratio are 30:28:25:25.
Described softening agent includes following component: dioctyl phthalate and coumarone, dioctyl phthalate and Gu
The weight ratio of Ma Long is 15:5.
Described softening agent includes following component: triethanolamine, zinc oxide and stearic acid, triethanolamine, zinc oxide and tristearin
The weight ratio of acid is 8:4:3.4.
Described rubber is nitrile rubber.
Described nitrile rubber is DQJ 270 type nitrile rubber.
The present invention has the advantage that with good effect:
1. the curing rate of injecting when reducing high temperature, meets injecting and has the flowing of long period before realizing solidification
Property.
2. being applicable to the closure of narrow leakage path, for close clearance injecting passage, injecting contacts with high temperature cavity wall, Gu
Change impact aggravation, it is difficult to fill up compacting, and retardation of curing injecting can be offset.
3. it is applicable to after-teeming fill, the sealant having been filled with in sealing cavity, As time goes on, has been formed chamber
The extruding force of wall has lax and thermal weight loss phenomenon generation, therefore, needs after-teeming to fill and compresses.Owing to injecting itself has retardation of curing
Property, can meet after-teeming fills, and enables the injecting successively injected preferably to combine, and keeps the seal pressure of needs.
Detailed description of the invention
For the summary of the invention of the present invention, feature and effect can be further appreciated that, hereby enumerate following example, describe in detail such as
Under:
Embodiment 1, a kind of retardation of curing type sealant, this sealant is with rubber as matrix material, with sulfur as vulcanizing agent,
Adapted vulcanization accelerator, described vulcanization accelerator includes that accelerator CZ, rubber can be selected for DQJ 270 type nitrile rubber.
Above-mentioned sealant, component includes sulfur, vulcanization accelerator part and rubber, sulfur, vulcanization accelerator part and rubber
Weight ratio is 1.9:3.0:100, and wherein vulcanization accelerator includes following component: tetramethyl thiuram disulfide, curing two
Benzothiazole, N-ring ethylenebis dithiocarbamate phthalimide and N cyclohexyl 2 benzothiazole sulfenamide, tetra methylthiuram
Disulphide, dibenzothiazyl disulfide, N-ring ethylenebis dithiocarbamate phthalimide and N-cyclohexyl-2-[4-morpholinodithio time sulphur
Amide weight ratio is 1.0:1.0:0.8:0.5.
Above-mentioned sealant is additionally added reinforcing filler, softening agent and activator, reinforcing filler, softening agent, activator with
Rubber weight is than for 100:18:14:100.
Wherein reinforcing filler includes following component: carbon black, expanded graphite, potter's clay and Pulvis Talci, carbon black, expanded graphite,
Potter's clay and talcous weight ratio are 30:28:25:25；Softening agent includes following component: dioctyl phthalate and Gu Ma
Grand, the weight ratio of dioctyl phthalate and coumarone is 15:5；Softening agent includes following component: triethanolamine, zinc oxide
And stearic acid, triethanolamine, zinc oxide and stearic weight ratio are 8:4:3.4.
The preparation process of this sealant is summarized as follows:
(1) first matrix material nitrile rubber is plasticated.
(2) nitrile rubber after completing to plasticate parked 20 hours.
(3) by sulfur, vulcanization accelerator, reinforcing filler, softening agent and activator according to said components priority and butyronitrile
Rubber is rear mixing stagnation 10 hours in mixing.
(4) mixture that step (3) mixes is placed in the cylinder that banded extruder is extruded into the different-diameter of needs, then presses
Need to be cut into different length.
The key property of this sealant product:
(1) product performance index meets GB/T 26556-2011 " bearing device on-line pressure sealant agent technical conditions ", and product belongs to
In thermohardening type.
A. initial injection pressure: by annex in standard GB/T 26556-2011, should control at 25 DEG C ± 5 DEG C, 8～
20MPa。
B. Thermocurable (curing characteristics t90), min (200 DEG C), >=14；Method of testing presses GB/T 16584-1996 " rubber
Vulcanization characteristics is measured " with without rotor vulcameter.
C. thermal weight loss % (500 DEG C/250 DEG C) ,≤25；Method of testing presses GB/T 14837-93 " Rubber & Rubber Products group
The mensuration thermogravimetry of part content ".
D. medium-resistance, (under room temperature), swellbility, molten severe % ,-5～10；Method of testing presses GB/T 1690-2006
" vulcanite or thermoplastic elastomer seakeeping test method ".
(2) sealant of the present embodiment hardening time at different temperatures
| Temperature | 150℃ | 200℃ | 250℃ | 300℃ | 350℃ |
| Hardening time | 150min | 63min | 42min | 24min | 15min |
Embodiment 2, a kind of retardation of curing type sealant, this sealant is with rubber as matrix material, with sulfur as vulcanizing agent,
Adapted vulcanization accelerator, described vulcanization accelerator includes accelerator CZ.Rubber selects DQJ 270 type nitrile rubber.
Above-mentioned sealant, component includes sulfur, vulcanization accelerator part and rubber, sulfur, vulcanization accelerator part and rubber
Weight ratio is 1.95:3.2:100.
Wherein vulcanization accelerator includes following component: tetramethyl thiuram disulfide, dibenzothiazyl disulfide, N-ring
Ethylenebis dithiocarbamate phthalimide and N cyclohexyl 2 benzothiazole sulfenamide, tetramethyl thiuram disulfide, two sulfur
Changing bisbenzothiazole, N-ring ethylenebis dithiocarbamate phthalimide and N cyclohexyl 2 benzothiazole sulfenamide weight ratio is
1.0:1.0:0.8:0.75。
Above-mentioned sealant is additionally added reinforcing filler, softening agent and activator, reinforcing filler, softening agent, activator with
Rubber weight is than for 104:19:15:100.
Described reinforcing filler includes following component: carbon black, expanded graphite, potter's clay and Pulvis Talci, carbon black, expanded graphite,
Potter's clay and talcous weight ratio are 30:28:25:25.
Described softening agent includes following component: dioctyl phthalate and coumarone, dioctyl phthalate and Gu
The weight ratio of Ma Long is 15:5.
Described softening agent includes following component: triethanolamine, zinc oxide and stearic acid, triethanolamine, zinc oxide and tristearin
The weight ratio of acid is 8:4:3.4.
The preparation process of the retardation of curing type sealant of the application is summarized as follows:
(1) first matrix material nitrile rubber is plasticated.
(2) nitrile rubber after completing to plasticate parked 20 hours.
(3) by sulfur, vulcanization accelerator, reinforcing filler, softening agent and activator according to said components priority and butyronitrile
Rubber is rear mixing stagnation 10 hours in mixing.
(4) mixture that step (3) mixes is placed in the cylinder that banded extruder is extruded into the different-diameter of needs, then presses
Need to be cut into different length.
The key property of this sealant product:
(1) product performance index meets GB/T 26556-2011 " bearing device on-line pressure sealant agent technical conditions ", and product belongs to
In thermohardening type.
A. initial injection pressure: by annex in standard GB/T 26556-2011, should control at 25 DEG C ± 5 DEG C, 8～
20MPa。
B. Thermocurable (curing characteristics t90), min (200 DEG C), >=14；Method of testing presses GB/T 16584-1996 " rubber
Vulcanization characteristics is measured " with without rotor vulcameter.
C. thermal weight loss % (500 DEG C/250 DEG C) ,≤25；Method of testing presses GB/T 14837-93 " Rubber & Rubber Products group
The mensuration thermogravimetry of part content ".
D. medium-resistance, (under room temperature), swellbility, molten severe % ,-5～10；Method of testing presses GB/T 1690-2006
" vulcanite or thermoplastic elastomer seakeeping test method ".
(2) sealant of the present embodiment 2 hardening time such as following table at different temperatures:
| Temperature | 150℃ | 200℃ | 250℃ | 300℃ | 350℃ |
| Hardening time | 146min | 60min | 39min | 21min | 13min |
Embodiment 3, a kind of retardation of curing type sealant, this sealant is with rubber as matrix material, with sulfur as vulcanizing agent,
Adapted vulcanization accelerator, described vulcanization accelerator includes accelerator CZ.Rubber can be selected for DQJ 270 type nitrile rubber.
Above-mentioned sealant, component includes sulfur, vulcanization accelerator part and rubber, sulfur, vulcanization accelerator part and rubber
Weight ratio is 2.0:3.4:100.
The described vulcanization accelerator following component of employing: tetramethyl thiuram disulfide, dibenzothiazyl disulfide, N-ring
Ethylenebis dithiocarbamate phthalimide and N cyclohexyl 2 benzothiazole sulfenamide, tetramethyl thiuram disulfide, two sulfur
Changing bisbenzothiazole, N-ring ethylenebis dithiocarbamate phthalimide and N cyclohexyl 2 benzothiazole sulfenamide weight ratio is
1.0:1.0:0.8:1.0。
Above-mentioned sealant is additionally added reinforcing filler, softening agent and activator, reinforcing filler, softening agent, activator with
Rubber weight is than for 108:20:16:100.
Described reinforcing filler includes following component: carbon black, expanded graphite, potter's clay and Pulvis Talci, carbon black, expanded graphite,
Potter's clay and talcous weight ratio are 30:28:25:25.
Described softening agent includes following component: dioctyl phthalate and coumarone, dioctyl phthalate and Gu
The weight ratio of Ma Long is 15:5.
Described softening agent includes following component: triethanolamine, zinc oxide and stearic acid, triethanolamine, zinc oxide and tristearin
The weight ratio of acid is 8:4:3.4.
The preparation process of the retardation of curing type sealant of the application is summarized as follows:
(1) first matrix material nitrile rubber is plasticated.
(2) nitrile rubber after completing to plasticate parked 20 hours.
(3) by sulfur, vulcanization accelerator, reinforcing filler, softening agent and activator according to said components priority and butyronitrile
Rubber is rear mixing stagnation 10 hours in mixing.
(4) mixture that step (3) mixes is placed in the cylinder that banded extruder is extruded into the different-diameter of needs, then presses
Need to be cut into different length.
2. the key property of product
(1) product performance index meets GB/T 26556-2011 " bearing device on-line pressure sealant agent technical conditions ", and product belongs to
In thermohardening type.
A. initial injection pressure: by annex in standard GB/T 26556-2011, should control at 25 DEG C ± 5 DEG C, 8～
20MPa。
B. Thermocurable (curing characteristics t90), min (200 DEG C), >=14；Method of testing presses GB/T 16584-1996 " rubber
Vulcanization characteristics is measured " with without rotor vulcameter.
C. thermal weight loss % (500 DEG C/250 DEG C) ,≤25；Method of testing presses GB/T 14837-93 " Rubber & Rubber Products group
The mensuration thermogravimetry of part content ".
D. medium-resistance, (under room temperature), swellbility, molten severe % ,-5～10；Method of testing presses GB/T 1690-2006
" vulcanite or thermoplastic elastomer seakeeping test method ".
(2) sealant of the present embodiment 3 hardening time such as following table at different temperatures:
| Temperature | 150℃ | 200℃ | 250℃ | 300℃ | 350℃ |
| Hardening time | 143min | 58min | 36min | 18min | 12min |
Embodiment described above is merely to illustrate technological thought and the feature of the present invention, in its object is to make this area
Skilled artisan will appreciate that present disclosure and implement according to this, it is impossible to only limit the patent model of the present invention with the present embodiment
Enclosing, what the most all disclosed spirit was made changes on an equal basis or modifies, and still falls in the scope of the claims of the present invention.
Claims (9)
1. a retardation of curing type sealant, it is characterised in that this sealant is with rubber as matrix material, with sulfur for sulfuration
Agent, adapted vulcanization accelerator, described vulcanization accelerator includes accelerator CZ.
Retardation of curing type sealant the most according to claim 1, it is characterised in that in this sealant, sulfur, sulfuration promote
The weight ratio of agent and rubber is 1.9～2.0:3.0～3.4:100, and wherein accelerator CZ weight in vulcanization accelerator accounts for
Ratio is 15%～28%.
Retardation of curing type sealant the most according to claim 2, it is characterised in that described vulcanization accelerator includes following group
Point: tetramethyl thiuram disulfide, dibenzothiazyl disulfide, N-ring ethylenebis dithiocarbamate phthalimide and N-hexamethylene
Base-2-[4-morpholinodithio sulfenamide, tetramethyl thiuram disulfide, dibenzothiazyl disulfide, N-ring ethylenebis dithiocarbamate neighbour's benzene
Dicarboximide and N cyclohexyl 2 benzothiazole sulfenamide weight ratio are 1.0:1.0:0.8:0.5～1.0.
Retardation of curing type sealant the most according to claim 1, it is characterised in that this sealant also includes reinforcement and filler
Agent, softening agent and activator, reinforcing filler, softening agent, activator and rubber weight ratio be 100～108:18～20:14～
16:100。
Retardation of curing type sealant the most according to claim 4, it is characterised in that described reinforcing filler includes following group
Point: carbon black, expanded graphite, potter's clay and Pulvis Talci, carbon black, expanded graphite, potter's clay and talcous weight ratio are 30:28:25:
25。
Retardation of curing type sealant the most according to claim 4, it is characterised in that described softening agent includes following component:
The weight ratio of dioctyl phthalate and coumarone, dioctyl phthalate and coumarone is 15:5.
Retardation of curing type sealant the most according to claim 4, it is characterised in that described softening agent includes following component:
Triethanolamine, zinc oxide and stearic acid, triethanolamine, zinc oxide and stearic weight ratio are 8:4:3.4.
Retardation of curing type sealant the most according to claim 1, it is characterised in that described rubber is nitrile rubber.
Retardation of curing type sealant the most according to claim 8, it is characterised in that described nitrile rubber is DQJ 270 type
Nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695721.8A CN106317511B (en) | 2016-08-18 | 2016-08-18 | A kind of retardation of curing type sealant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610695721.8A CN106317511B (en) | 2016-08-18 | 2016-08-18 | A kind of retardation of curing type sealant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106317511A true CN106317511A (en) | 2017-01-11 |
| CN106317511B CN106317511B (en) | 2018-05-08 |
Family
ID=57743411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610695721.8A Active CN106317511B (en) | 2016-08-18 | 2016-08-18 | A kind of retardation of curing type sealant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106317511B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948451A (en) * | 2018-07-09 | 2018-12-07 | 特拓(青岛)轮胎技术有限公司 | The encapsulating method of closed-smelting machine rotor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288034A (en) * | 2000-10-13 | 2001-03-21 | 天津市翔悦密封材料有限公司 | Sealing agent |
| CN101544789A (en) * | 2009-04-30 | 2009-09-30 | 天津市翔悦密封材料有限公司 | Sealant |
| CN101880413A (en) * | 2010-05-24 | 2010-11-10 | 大连理工大学 | Sealant for high temperature pressurized leakage stop-up |
| CN104403137A (en) * | 2014-10-08 | 2015-03-11 | 日照市晨晖橡塑制品有限公司 | Sealing rubber core used for rotating control head and preparation method thereof |
| CN105037845A (en) * | 2015-09-11 | 2015-11-11 | 中国化工集团曙光橡胶工业研究设计院有限公司 | High-oil-resistance conducting sealant |
-
2016
- 2016-08-18 CN CN201610695721.8A patent/CN106317511B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288034A (en) * | 2000-10-13 | 2001-03-21 | 天津市翔悦密封材料有限公司 | Sealing agent |
| CN101544789A (en) * | 2009-04-30 | 2009-09-30 | 天津市翔悦密封材料有限公司 | Sealant |
| CN101880413A (en) * | 2010-05-24 | 2010-11-10 | 大连理工大学 | Sealant for high temperature pressurized leakage stop-up |
| CN104403137A (en) * | 2014-10-08 | 2015-03-11 | 日照市晨晖橡塑制品有限公司 | Sealing rubber core used for rotating control head and preparation method thereof |
| CN105037845A (en) * | 2015-09-11 | 2015-11-11 | 中国化工集团曙光橡胶工业研究设计院有限公司 | High-oil-resistance conducting sealant |
Non-Patent Citations (1)
| Title |
|---|
| 王梦蛟等: "《橡胶工业手册 修订版 第二分册 配合剂》", 31 October 1989 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948451A (en) * | 2018-07-09 | 2018-12-07 | 特拓(青岛)轮胎技术有限公司 | The encapsulating method of closed-smelting machine rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106317511B (en) | 2018-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103396591B (en) | A kind of Oilfield ultrahigh-pressure acid-resistant rubber seal material and preparation method | |
| CN101880413A (en) | Sealant for high temperature pressurized leakage stop-up | |
| CN103317814A (en) | Preparation method of leather cup for belt pressure blocking and sealing | |
| CN110144088A (en) | A kind of new composite rubbers material and preparation method thereof for cable seal | |
| CN106317511B (en) | A kind of retardation of curing type sealant | |
| CN104908191A (en) | Production technology of vehicle door sponge rubber sealing ring with high sealability | |
| CN108359152A (en) | A kind of cooling system high temperature resistant hydrogenated nitrile-butadiene rubber material and preparation method thereof | |
| CN103387747B (en) | Expand emergent shutoff sealing agent and preparation method thereof | |
| CN110272594B (en) | High-wear-resistance high-temperature-resistance rubber and preparation method thereof | |
| CN106322049B (en) | A kind of fastening type isolation agent injecting type pipeline jig | |
| CN102839899B (en) | Nuclear radiation resistant non-marking rubber product for sealing nuclear island and preparation method thereof | |
| US20120074652A1 (en) | Delayed Curing Rubber Composition and Method | |
| CN208871028U (en) | A kind of pressure rubber-injection sealing device | |
| CN203823059U (en) | Pressure flange sealing device | |
| CN202580472U (en) | Pressure seal fixture with concave-convex groove structure | |
| CN109337377A (en) | A kind of anti-aging rubber sealing ring material and preparation method thereof | |
| CN109369979A (en) | A kind of tire curing bladder | |
| CN109027223A (en) | High-performance rubber composite seal and its manufacturing method | |
| CN108690231A (en) | A kind of preparation method of the steering pump oil inlet pipe with sponge low temperature sheath sizing material | |
| CN107325359A (en) | A kind of flame retardant type seal rubber | |
| CN105482194A (en) | Check valve sealing rubber resistant to low temperature and high temperature | |
| CN204704087U (en) | A kind of leakage of oil processing equipment | |
| CN106977782A (en) | A kind of heat exchanger anticorrosion antiwear sealing ring elastomeric material | |
| CN106090529B (en) | A kind of leakage sealed fixture of telescope jiont for pipe and its application method | |
| CN208565889U (en) | A kind of simple flange clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |