CN101724183A - Formula for negative pressure bellows - Google Patents
Formula for negative pressure bellows Download PDFInfo
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- CN101724183A CN101724183A CN200910311176A CN200910311176A CN101724183A CN 101724183 A CN101724183 A CN 101724183A CN 200910311176 A CN200910311176 A CN 200910311176A CN 200910311176 A CN200910311176 A CN 200910311176A CN 101724183 A CN101724183 A CN 101724183A
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Abstract
The invention relates to a formula for a negative pressure bellows, comprising the following ingredients by weight percentage: 30-50wt percent of butyronitrile rubber, 5-20wt percent of polyvinyl chloride, 4-8wt percent of dioctyl-phthalate (DOP), 10-16wt percent of fast extruding furnace black (FEF), 5-15wt percent of figuline, 1-2wt percent of anti-aging agent A, 1.5-2.5wt percent of zinc oxide, 0.5-1.5wt percent of stearic acid, 0.5-1.5wt percent of paraffin, 0.2-0.4wt percent of tetramethylthiuram disulfide, 0.5-1.5wt percent of brimstone, 0.2-0.6wt percent of mercaptobenzothiazole, and 1-5wt percent of aramid short fiber; after study and experiment, semi-reinforcing strong carbon black is removed in the new formula, one weighting program can be reduced and the cost is reduced; the argilla, paraffin and TMTD in the new formula can lead the aramid short fiber to be uniformly dispersed in the rubber, and the elasticity and flowability of the rubber can be increased.
Description
Background technology
Make the material of negative pressure bellows and generally select paracril and chlorinated polyethylene compound (NBR+PVC) for use.Development along with automobile industry, it is increasing to be used for the negative pressure that the sebific duct of negative pressure operating environment bears on the automobile, original corrugated tube is difficult to reach service requirements, present negative pressure bellows generally adopts the increase stiffening web, perhaps increase in sebific duct the inside a spring be used to support do not inhale when body makes it accept negative pressure flat.Adopt to increase the corrugated tube of stiffening web, the mould complexity of making, and be difficult for the demoulding during sulfuration; Adopt the corrugated tube that increases spring, not only increased by a procedure, and cost can improve greatly also.In order to satisfy higher negative pressure requirement, a kind of novel negative pressure bellows just must be arranged, it is imperative therefore to develop new prescription.
Summary of the invention
Problems such as purpose of the present invention mainly is to improve the anti-negative pressure of existing corrugated tube, and the cost that the increase that the existing corrugated tube of solution requires because of negative pressure brings improves, and output capacity is low.And in rubber, add the anti-negative pressure that a kind of aramid fiber short fibre can improve corrugated tube, can improve the tear strength of sizing material simultaneously.The staple fibre that the present invention uses is to be the aramid fiber resin by poly-terephthaloyl Ursol D (commodity of E.I.Du Pont Company the are called Kevlar) another name that Du Pont produces, aramid fiber (Aramid Fiber), claim the Kevlar that again, belong to a kind of of aromatic polyamide, be a kind of novel synthon, has superstrength, high-modulus and high temperature resistant, acid-fast alkali-proof, the premium properties that waits in light weight, its intensity is 5～6 times of steel wire, modulus is steel wire or glass fibre 2～3 times, toughness is 2 times of steel wire, and weight only is about 1/5 of steel wire, under 560 ℃, do not decompose, do not melt.It has good insulation performance and ageing resistance, has very long life cycle.Through the smart staple fibre of cutting, its length is generally about 6.35mm, has very strong wear resistance, is evenly dispersed in easily in the rubber, can improve the tear strength of sizing material, thereby improves the rigidity of sebific duct.Aramid fiber short fibre is the same with other rubber ingredients, joins in the rubber as a kind of auxiliary material, and mixing link still got final product according to former technological operation.
The rubber compounding that does not contain aramid fiber short fibre:
Content is by weight percentage:
Old prescription
| The starting material title | Original formulation |
| Paracril | ????35 |
| Polyvinyl chloride | ????15 |
| Dioctyl phthalate (DOP) (DOP) | ????7.5 |
| Fast extruding furnace black (FEF) | ????10 |
| Semi-reinforcing carbon black (N774) | ????10 |
| Fine particle calcium carbonate | ????15 |
| The starting material title | Original formulation |
| Anti-aging agent RD | ????0.5 |
| Styrenated phenol (antioxidant SP) | ????0.5 |
| Zinc hydride | ????2.5 |
| Stearic acid | ????1 |
| Polyoxyethylene glycol | ????1 |
| Pyrocatechol boric acid di-o-tolylguanidine salt (vulkacit D) | ????0.4 |
| Sulfur | ????1 |
| 2-benzothiazolyl mercaptan (captax) | ????0.6 |
The rubber compounding that contains aramid fiber short fibre, component and weight percent are as follows,
| The starting material title | New prescription |
| Paracril | ????30～50 |
| Polyvinyl chloride | ????5～20 |
| Dioctyl phthalate (DOP) (DOP) | ????4～8 |
| Fast extruding furnace black (FEF) | ????10～16 |
| Potter's clay | ????5～15 |
| Antioxidant A | ????1～2 |
| Zinc oxide | ????1.5～2.5 |
| Stearic acid | ????0.5～1.5 |
| Paraffin | ????0.5～1.5 |
| Tetramethyl-thiuram disulfide (TM monex TD) | ????0.2～0.4 |
| Sulfur | ????0.5～1.5 |
| 2-benzothiazolyl mercaptan (captax) | ????0.2～0.6 |
| The starting material title | New prescription |
| Aramid fiber short fibre | ????1～5 |
Through our research and experiment, in new prescription, removed semi-reinforcing hydrocarbon black, can reduce the weighing operation one, reduced cost.Potter's clay in the new prescription, paraffin, TMTD all can better be dispersed in aramid fiber short fibre in the rubber, and increase the elasticity of sizing material and flowability and performance and be better than old prescription.
Embodiment
The embodiment that contains the aramid fiber short fibre rubber compounding
Content by weight percentage
| Component | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Example 8 | Example 9 | Example 10 |
| Paracril | ??35 | ??47 | ??40 | ??50 | ??45 | ??47 | ??35 | ??43 | ??40 | ??30 |
| Polyvinyl chloride | ??15 | ??10 | ??18 | ??5 | ??20 | ??18 | ??20 | ??16 | ??18 | ??16 |
| Dioctyl phthalate (DOP) (DOP) | ??8 | ??6 | ??5 | ??6 | ??5 | ??4 | ??8 | ??6 | ??6 | ??8 |
| Fast extruding furnace black (FEF) | ??16 | ??14 | ??10 | ??16 | ??10 | ??15 | ??15 | ??12 | ??13 | ??16 |
| Potter's clay | ??15 | ??13 | ??14 | ??14 | ??5 | ??7 | ??12 | ??14 | ??11 | ??15 |
| Antioxidant A | ??2 | ??1.5 | ??1.4 | ??1 | ??2 | ??2 | ??1.1 | ??1.2 | ??1.8 | ??2 |
| Zinc oxide | ??2.5 | ??1.8 | ??2 | ??1.5 | ??2.5 | ??2 | ??1.6 | ??1.9 | ??2.5 | ??2.5 |
| Stearic acid | ??0.9 | ??0.6 | ??1.1 | ??0.5 | ??1.5 | ??1 | ??1.2 | ??1 | ??0.8 | ??1.5 |
| Paraffin | ??1.1 | ??0.9 | ??1.3 | ??0.5 | ??1.5 | ??1.5 | ??0.5 | ??0.8 | ??1 | ??1.5 |
| Tetramethyl-thiuram disulfide (TM monex TD) | ??0.4 | ??0.3 | ??0.4 | ??0.2 | ??0.4 | ??0.3 | ??0.3 | ??0.4 | ??0.2 | ??0.4 |
| Sulfur | ??1 | ??0.9 | ??1.2 | ??0.5 | ??1.5 | ??0.8 | ??1.3 | ??1.4 | ??1 | ??1.5 |
| Component | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Example 8 | Example 9 | Example 10 |
| 2-benzothiazolyl mercaptan (captax) | ??0.6 | ??0.6 | ??0.6 | ??0.2 | ??0.6 | ??0.4 | ??0.5 | ??0.3 | ??0.4 | ??0.6 |
| Aramid fiber short fibre | ??2.5 | ??3.4 | ??5 | ??4.6 | ??5 | ??1 | ??3.5 | ??2 | ??4.3 | ??5 |
Be to not containing aramid fiber short fibre rubber compounding and the measured performance contrast that contains the aramid fiber short fibre rubber compounding below.
| Sequence number | Interventions Requested | Standard value | Do not contain the aramid fiber short fibre rubber compounding | Contain aramid fiber short fibre rubber |
| ??1 | Hardness Shao Shi A | ??75±5 | ??77 | ??76 |
| ??2 | Tensile yield % | ??≥250 | ??432 | ??386 |
| ??3 | Tensile strength at yield Mpa | ??≥8.0 | ??13.5 | ??14.5 |
| ??4 | Tear strength N/mm | ??≥5.0 | ??12.3 | ??19.6 |
| ??5 | 120 ℃ * 70h of hot air aging | |||
| Tensile strength at yield velocity of variation % | ??≤30 | ??5.2 | ??6.5 | |
| Tensile yield velocity of variation % | ??≤50 | ?-24.5 | ?-22.1 | |
| Changes in hardness Shao Shi A | ??≤+20 | ??+5 | ??+4 | |
| ??6 | 120 ℃ * 70h the oil of anti-ASTM3# | |||
| Tensile strength at yield velocity of variation % | ??≤40 | ?-21.3 | ?-22.4 | |
| Tensile yield velocity of variation % | ??≤40 | ?-32.2 | ?-31.8 | |
| Changes in hardness Shao Shi A | ??5～+25 | ?-3 | ?-3 | |
| Volume change % | ??10～+25 | ??5.2 | ??5.4 | |
| ??7 | 23 ℃ * 48h of the gasoline of anti-120# | |||
| Volume change % | ??5～+25 | ??20.1 | ??19.6 |
By analysis, contain the aramid fiber short fibre rubber compounding and can substitute fully and do not contain the aramid fiber short fibre rubber compounding two kinds of formulation datas.
The preparation method that use contains aramid fiber short fibre rubber compounding and the negative pressure bellows product that does not contain the production of aramid fiber short fibre rubber compounding is consistent, and method is as follows:
The sizing material that has aramid fiber short fibre that (1) will mix is cut into the strip of width 50mm, and is standby.
(2) with glue-injection machine preheating and installation mold.
(3) setup parameter: patrix temperature: 180 ± 5 ℃; Counterdie temperature: 180 ± 5 ℃; 60 ± 5 ℃ of pan feeding section temperature; Penetrate the section temperature: 55 ± 5 ℃; Injecting glue amount: 650 ± 10CC (can regulate) according to variant production injecting glue amount; Curing time: 300 seconds; Injection pressure: 160 ± 10t; Dwell pressure: 100 ± 10t; Mold pressure: 160 ± 10t.
(4) matched moulds, depanning, the demoulding.
Consider the difference of the anti-negative pressure degree of negative pressure bellows, can add the staple fibre of different umbers, addition commonly used is 3 parts, can improve the use umber of staple fibre with the raising of negative pressure requirement.With internal diameter 50mm product is example, the staple fibre of 1 part of every interpolation in the prescription, and its anti-negative pressure performance can improve about 3KPa, and tear strength also has very large raising simultaneously.It is as follows to record the result through overtesting:
| Internal diameter mm | Add the aramid fiber short fibre umber | Sebific duct is inhaled the negative pressure value when flat | Tear strength |
| ??50 | ??0 | ??5.2KPa | ??5.6N/mm |
| ??50 | ??3 | ??15.1KPa | ??6.3N/mm |
| ??50 | ??4 | ??18.3KPa | ??7.2N/mm |
| ??50 | ??5 | ??22.2KPa | ??8.4N/mm |
By analysis, use the anti-negative pressure of the finished product that this sizing material makes to be greatly improved to above data.
Negative pressure bellows of the present invention is a single layer structure, and internal diameter can be made the mould of different size according to the requirement of main engine plants.
The use that the present invention proposes contains the aramid fiber short fibre rubber compounding, describe in detail by above, person skilled obviously can be changed prescription as herein described in not breaking away from content of the present invention, spirit and scope or suitably be changed with combination and realize the technology of the present invention.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are regarded as being included in spirit of the present invention, scope and the content.
Claims (1)
1. one kind is particularly related to the prescription that is used for negative pressure bellows, and component and weight percent are as follows:
Paracril 30～50
Polyvinyl chloride 5～20
Dioctyl phthalate (DOP) (DOP) 4～8
Fast extruding furnace black (FEF) 10～16
Potter's clay 5～15
Antioxidant A 1～2
Zinc oxide 1.5～2.5
Stearic acid 0.5～1.5
Paraffin 0.5～1.5
Tetramethyl-thiuram disulfide (TM monex TD) 0.2～0.4
Sulfur 0.5～1.5
2-benzothiazolyl mercaptan (captax) 0.2～0.6
Aramid fiber short fibre 1～5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103111768A CN101724183B (en) | 2009-12-10 | 2009-12-10 | Formula for negative pressure bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103111768A CN101724183B (en) | 2009-12-10 | 2009-12-10 | Formula for negative pressure bellows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101724183A true CN101724183A (en) | 2010-06-09 |
| CN101724183B CN101724183B (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103111768A Expired - Fee Related CN101724183B (en) | 2009-12-10 | 2009-12-10 | Formula for negative pressure bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101724183B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113634A (en) * | 2011-11-17 | 2013-05-22 | 青岛茂林橡胶制品有限公司 | Rubber corrugated protecting gum cover and preparation method thereof |
| ITVR20120245A1 (en) * | 2012-12-19 | 2014-06-20 | Tumedei S P A | COMPOSITION FOR A DISC-TYPE FLEXIBLE COUPLING AND COUPLING INCLUDING SUCH COMPOSITION. - COMPOSITION FOR A FLEXIBLE JOINT OF DISC TYPE AND JOINT INCLUDING SUCH COMPOSITION. |
| CN106867169A (en) * | 2017-02-28 | 2017-06-20 | 江苏三水企业孵化器有限公司 | A kind of preparation method of natural gas line bellows composite |
| CN107141536A (en) * | 2017-06-26 | 2017-09-08 | 江苏长风波纹管有限公司 | A kind of concrete pump truck tail-end rubber hose composite rubber material |
| CN115160660A (en) * | 2021-04-07 | 2022-10-11 | 昆明昌恒光电仪器有限公司 | Rubber processing and manufacturing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4010238B2 (en) * | 2002-12-06 | 2007-11-21 | 東海ゴム工業株式会社 | Hose with bellows metal tube |
| CN101445621A (en) * | 2008-11-11 | 2009-06-03 | 信义集团公司 | Method for preparing piston cup for slurry pump by Kevlar short fiber-rubber composite |
| CN101503531B (en) * | 2008-12-25 | 2011-05-04 | 天津鹏翎胶管股份有限公司 | Ethanol petrol resistant acrylonitrile butadiene / polychloroethylene blended rubber tube and preparation thereof |
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2009
- 2009-12-10 CN CN2009103111768A patent/CN101724183B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113634A (en) * | 2011-11-17 | 2013-05-22 | 青岛茂林橡胶制品有限公司 | Rubber corrugated protecting gum cover and preparation method thereof |
| CN103113634B (en) * | 2011-11-17 | 2015-07-22 | 青岛茂林橡胶制品有限公司 | Rubber corrugated protecting gum cover and preparation method thereof |
| ITVR20120245A1 (en) * | 2012-12-19 | 2014-06-20 | Tumedei S P A | COMPOSITION FOR A DISC-TYPE FLEXIBLE COUPLING AND COUPLING INCLUDING SUCH COMPOSITION. - COMPOSITION FOR A FLEXIBLE JOINT OF DISC TYPE AND JOINT INCLUDING SUCH COMPOSITION. |
| WO2014097136A1 (en) * | 2012-12-19 | 2014-06-26 | Tumedei Spa | Composition for a disc-type flexible coupling and coupling including such composition |
| US9587082B2 (en) | 2012-12-19 | 2017-03-07 | Tumedei Spa | Composition for a disc-type flexible coupling and coupling including such composition |
| CN105121532B (en) * | 2012-12-19 | 2017-08-11 | 图梅德埃股份公司 | The composition of disc type flexible coupling and the shaft coupling for including this composition |
| CN106867169A (en) * | 2017-02-28 | 2017-06-20 | 江苏三水企业孵化器有限公司 | A kind of preparation method of natural gas line bellows composite |
| CN107141536A (en) * | 2017-06-26 | 2017-09-08 | 江苏长风波纹管有限公司 | A kind of concrete pump truck tail-end rubber hose composite rubber material |
| CN115160660A (en) * | 2021-04-07 | 2022-10-11 | 昆明昌恒光电仪器有限公司 | Rubber processing and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101724183B (en) | 2011-11-30 |
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Address after: 300384 No. 1703, Ge Wan Road, Grand Port, Tianjin Patentee after: TIANJIN PENGLING GROUP Co.,Ltd. Address before: 300384 No. 1703, Ge Wan Road, Grand Port, Tianjin Patentee before: Tianjin Pengling Rubber Hose Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20211210 |