CN101538378A - All-steel tire tread synthetic adhesive with high abrasion - Google Patents
All-steel tire tread synthetic adhesive with high abrasion Download PDFInfo
- Publication number
- CN101538378A CN101538378A CN200910020127A CN200910020127A CN101538378A CN 101538378 A CN101538378 A CN 101538378A CN 200910020127 A CN200910020127 A CN 200910020127A CN 200910020127 A CN200910020127 A CN 200910020127A CN 101538378 A CN101538378 A CN 101538378A
- Authority
- CN
- China
- Prior art keywords
- type
- agent
- synthetic adhesive
- rubber
- tire tread
- 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
- 239000004826 Synthetic adhesive Substances 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 9
- 238000005299 abrasion Methods 0.000 title claims abstract description 9
- 239000010959 steel Substances 0.000 title claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000006238 High Abrasion Furnace Substances 0.000 claims abstract description 11
- 238000004073 vulcanization Methods 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000006229 carbon black Substances 0.000 claims abstract description 8
- 229920001206 natural gum Polymers 0.000 claims abstract description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000011787 zinc oxide Substances 0.000 claims abstract description 6
- 235000021355 Stearic acid Nutrition 0.000 claims description 13
- 230000003712 anti-aging effect Effects 0.000 claims description 13
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 13
- 239000004568 cement Substances 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 10
- 239000008117 stearic acid Substances 0.000 claims description 9
- 239000006236 Super Abrasion Furnace Substances 0.000 claims description 8
- 239000005864 Sulphur Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract description 30
- 239000005060 rubber Substances 0.000 abstract description 30
- 238000000034 method Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 230000020169 heat generation Effects 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 229920002857 polybutadiene Polymers 0.000 abstract 1
- 239000011265 semifinished product Substances 0.000 abstract 1
- 235000019241 carbon black Nutrition 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 229920003193 cis-1,4-polybutadiene polymer Polymers 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000013456 study Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an all-steel tire tread synthetic adhesive with high abrasion in the field of rubber for tires. The synthetic adhesive comprises the following raw materials according to parts by weight: 70 of natural gum, 25 to 35 of 3-polybutadiene rubber, 3 to 5 of zinc oxide, 1.5 to 2.5 of stearinic acid, 2 to 5 of age inhibitor, 1 to 2 of protection wax, 1.5 to 3 of homogenizing agent, 1 to 2 of silane coupling agent, 50 to 60 of high-abrasion furnace black, 4 to 6 of white carbon black, 1 to 2 of sulfur, 1 to 2 of curing catalyst, 0.5 to 1.5 of vulcanization resisting reducing agent, and 0.2 to 0.5 of antiscorching agent. The abrasion wear performance index of the synthetic adhesive is from 0.15-0.16 cm<3>/1.61 km, the requirement of the national standard is not more than 0.40 cm<3>/1.61 km, the abrasion wear performance index of the synthetic adhesive is far higher than that of the national standard, and meanwhile, a refined rubber piece has good uniformity in the course of processing the rubber matrix comprising the raw materials. The heat generation is low in the course of using parts of semi-finished products of a tire tread in the next working procedure.
Description
Technical field
The present invention relates to a kind of all-steel tire tread synthetic adhesive with high abrasion in the rubber for tire field.
Background technology
At present, the configuration of the tread rubber of whole steel wire radial tyre mainly comprises natural gum, cis-butadiene cement, butadiene-styrene rubber, zinc oxide, stearic acid, anti-aging agent, protection wax, leveler, high abrasion furnace black(HAF), sulphur and scorch retarder etc.In order to improve its wear resisting property, the content that the scheme that solves mainly comprises 1 at present, vast scale increases cis-butadiene cement in the tread rubber; 2, use super abrasion furnace black; 3, also with natural gum, cis-butadiene cement and butadiene-styrene rubber.Go up according to this tread glue formula mentality of designing, its inferior position of the tread rubber of designing has this several aspects: 1. vast scale increases the content of cis-butadiene cement in the prescription, its objective is and utilize the attrition resistant characteristic of cis-butadiene cement, improve the wear resistance of tread rubber, because characteristics such as cis-butadiene cement is poor from reinforcement, Intermolecular Forces is little, internal cohesive energy is low, make that the thorn resistance of tread rubber can be relatively poor, make tread rubber easily produce simultaneously and collapse the defect of using up piece, particularly use the later stage at tread rubber.2. using the purpose of super abrasion furnace black (as using N115) is to utilize the wear resistance of super abrasion furnace black to rubber good strengthening action raising tread rubber.Consequent problem is, because the super abrasion furnace black particle is thin, is difficult for disperseing in sizing material in mixing process, can cause the inhomogeneous of sizing material, reduces properties of rubber; Simultaneously, because the existence of this FF fine furnace black makes to make troubles tread rubber Sheng Regao, operational difficulty in the work in-process course of processing to production technique.In use big, the living heat of rolling resistance is many for finished tire, not only influences the work-ing life of tire but also can expend a large amount of fuel oils, directly increases transportation cost.3. use the tread rubber of three kinds of rubber blendings (NR, SBR, BR), exist equally and give birth to the many disadvantages of heat in the tire use, and because the synthetic rubber that uses in the tread rubber is more, the adhesive capacity of sizing material is descended, easily cause the problem of tyre surface and carcass disengagement, can influence the work-ing life of tire equally.
Summary of the invention
A kind of all-steel tire tread synthetic adhesive with high abrasion that the present invention proposes, its purpose purpose is exactly the defective that exists at prior art, carry out synthetic study, analysis and experiment, adopt the pattern of several method and usefulness, under the prerequisite of the processing characteristics that guarantees tread rubber and other use properties, increase substantially the wear resistance of tread rubber.
Its technical scheme is: the raw material by following weight part is formed: 70 parts of natural gums, 25-35 part cis-butadiene cement, 3-5 part zinc oxide, 1.5-2.5 part stearic acid, 2-5 part anti-aging agent, 1-2 part protection wax, 1.5-3 part leveler, 1-2 part silane coupling agent, 50-60 part high abrasion furnace black(HAF), 4-6 part white carbon black, 1-2 part sulphur, 1-2 part vulcanization accelerator, 0.5-1 part anti-recovery agent, 0.2-0.5 part scorch retarder.
Wherein stearic acid comprises a kind of of 18 carbonic acid, stearic acid, octadecanoic acid and octadecanoic acid; Anti-aging agent is 1-2 part RD type anti-aging agent and 1-3 part 4020 type anti-aging agent; Leveler is an A-78 type leveler; Tackifying resin is a C5 type tackifying resin; Silane coupling agent is a Si-69 type silane coupling agent; High abrasion furnace black(HAF) is a N234 type fine intermediate super abrasion furnace black high structure; Anti-recovery agent is an XY900 type anti-recovery agent; Scorch retarder is a CTP type scorch retarder.
Characteristics of the present invention are:
1, uses natural rubber and cis-1,4-polybutadiene rubber and usefulness.The consumption of control cis-butadiene cement is no more than 30 parts, improves the wear resistance of tread rubber.
2, adopt white carbon black, Si-69 equilibrium system.Si-69 has carried out modification to white carbon black in mixing process, simultaneously because the existence of white carbon black can suitably reduce the sooty consumption, reduces the heat of giving birth to of tread rubber when improving the tread rubber stress at definite elongation.
3, in prescription, use novel material anti-recovery agent XY-900.Can reduce in the tire vulcanization process on the one hand, tread rubber is in mould under the long-time cure conditions and the vulcanization crosslinking bond rupture that produces; On the other hand, in the tire use, the vulcanization crosslinking bond rupture because of the living heat of rolling causes can be compensated under anti-recovery agent XY-900 helps.The cross-linking density and the stable physical property that keep sizing material effectively improve the ageing-resistant performance and the non-deformability of goods.
4, the high short vulcanization system of low-sulfur is used.Reduce the cis-1,4-polybutadiene rubber cross-linking density so that reduce to collapse in the tire use use up the piece risk in, can improve the stress at definite elongation of tread rubber, guarantee the integral coherence energy of tread rubber and carcass.
By the cooperation of above several aspects, the wear hardness index of this prescription is 0.15～0.16cm
3/ 1.61km, the national standard requirement is≤0.40cm
3/ 1.61km exceeds national standard far away.Simultaneously, in this formulated rubber material course of processing, refining glue goes out good film good uniformity, and next procedure is used out in the tyre surface semifinished part process, gives birth to hot low.
For the use properties of this prescription of complete detection, carried out service testing as the tire of tyre surface to using tread rubber that this prescription produces.Use the vehicle of this tire, the cargo truck for 20 tons of load-carryings is used in rear drive sprocket, and actual service life surpasses 40,000 kilometers, and the surface detail wearing and tearing are no more than 6mm, and the pattern block surface is normal, the phenomenon of using up piece do not occur collapsing.
This prescription is existing to be produced in batches in the workshop, and all at present whole steel wire radial tyre tyre surfaces all use this prescription, and market feedback is all right.
Embodiment
Embodiment 1, and raw material is a weight part: 70 parts of natural gums, 35 parts of cis-butadiene cements, 3 parts of zinc oxide, 2.2 parts of stearic acid, 1 part of RD type anti-aging agent and 2 part of 4020 type anti-aging agent, 1 part of protection wax, 2 parts of A-78 type levelers, 1-2 part Si-69 type silane coupling agent, 55 parts of fine intermediate super abrasion furnace black high structures, 5 parts of white carbon blacks, 1.5 parts of sulphur, 1 part of vulcanization accelerator, 0.6 part anti-recovery agent, 0.25 part of scorch retarder.
Embodiment 2, and raw material is a weight part: 70 parts of natural gums, 30 parts of cis-butadiene cements, 4 parts of zinc oxide, 2.5 parts of stearic acid, 1.5 parts of RD type anti-aging agent and 2 part of 4020 type anti-aging agent, 1.5 part protection wax, 3 parts of A-78 type levelers, 2 parts of Si-69 type silane coupling agents, 50 parts of fine intermediate super abrasion furnace black high structures, 6 parts of white carbon blacks, 1.2 parts of sulphur, 1.6 parts of NS type vulcanization accelerators, 0.5 part XY900 type anti-recovery agent, 0.3 part of CTP type scorch retarder.
Above-mentionedly only list 2 concrete implementation columns, experimental results show that the arbitrary combination in the proportional range of this programme, all can achieve the desired result.
Claims (2)
1, a kind of all-steel tire tread synthetic adhesive with high abrasion is characterized in that: the raw material by following weight part is formed: 70 parts of natural gums, 25-35 part cis-butadiene cement, 3-5 part zinc oxide, 1.5-2.5 part stearic acid, 2-5 part anti-aging agent, 1-2 part protection wax, 1.5-3 part leveler, 1-2 part silane coupling agent, 50-60 part high abrasion furnace black(HAF), 4-6 part white carbon black, 1-2 part sulphur, 1-2 part vulcanization accelerator, 0.5-1 part anti-recovery agent, 0.2-0.5 part scorch retarder.
2, all-steel tire tread synthetic adhesive with high abrasion according to claim 1 is characterized in that: wherein stearic acid comprises a kind of of 18 carbonic acid, stearic acid, octadecanoic acid and octadecanoic acid; Anti-aging agent is 1-2 part RD type anti-aging agent and 1-3 part 4020 type anti-aging agent; Leveler is an A-78 type leveler; Tackifying resin is a C5 type tackifying resin; Silane coupling agent is a Si-69 type silane coupling agent; High abrasion furnace black(HAF) is a N234 type fine intermediate super abrasion furnace black high structure; Vulcanization accelerator is a NS type vulcanization accelerator; Anti-recovery agent is an XY900 type anti-recovery agent; Scorch retarder is a CTP type scorch retarder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100201279A CN101538378B (en) | 2009-03-31 | 2009-03-31 | All-steel tire tread synthetic adhesive with high abrasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100201279A CN101538378B (en) | 2009-03-31 | 2009-03-31 | All-steel tire tread synthetic adhesive with high abrasion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101538378A true CN101538378A (en) | 2009-09-23 |
| CN101538378B CN101538378B (en) | 2011-03-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100201279A Active CN101538378B (en) | 2009-03-31 | 2009-03-31 | All-steel tire tread synthetic adhesive with high abrasion |
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| Country | Link |
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| CN (1) | CN101538378B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857685A (en) * | 2010-06-08 | 2010-10-13 | 山东八一轮胎制造有限公司 | Low heat generation and fatigue resistance tyre pad glue and production process thereof |
| CN102040754A (en) * | 2010-12-13 | 2011-05-04 | 四川轮胎橡胶（集团）股份有限公司 | Bias tire shoulder stock |
| CN102276882A (en) * | 2011-07-19 | 2011-12-14 | 中橡集团曙光橡胶工业研究设计院 | Tread rubber with high-cutting and tearing resistant performance and low-dynamic heat generation |
| CN102492186A (en) * | 2011-12-08 | 2012-06-13 | 四川凯力威科技股份有限公司 | Composite sidewall filling rubber formula rubber material for all-steel radial tire |
| CN102746543A (en) * | 2012-07-10 | 2012-10-24 | 山东琪美达轮胎有限公司 | Environment-friendly rubber inner tube and method for producing same |
| CN102924757A (en) * | 2011-08-12 | 2013-02-13 | 招远市泰仑特塑胶化工有限公司 | External-layer low-hardness rubber fender |
| CN103483658A (en) * | 2013-09-22 | 2014-01-01 | 赛轮股份有限公司 | Rubber compound high in safety performance of processing and technology thereof |
| CN103642090A (en) * | 2013-11-19 | 2014-03-19 | 山东永泰化工有限公司 | High-temperature resistant tread rubber used for car semi-steel radial tyres |
| CN103980556A (en) * | 2014-05-05 | 2014-08-13 | 中橡集团曙光橡胶工业研究设计院 | High-wear-resistant high-strength precured tread rubber for tyre retreading of truck tyre |
| CN104419027A (en) * | 2013-09-08 | 2015-03-18 | 青岛蓝农谷农产品研究开发有限公司 | Preparation method of anti-skid all-steel radial tyre |
| CN104650402A (en) * | 2015-01-19 | 2015-05-27 | 上海轮胎橡胶（集团）股份有限公司轮胎研究所 | Improved tread rubber material and preparation method thereof |
| CN104844846A (en) * | 2015-04-25 | 2015-08-19 | 安徽微威胶件集团有限公司 | Formula for oil resistant and environment-friendly rubber |
| CN105646954A (en) * | 2014-12-02 | 2016-06-08 | 四川轮胎橡胶（集团）股份有限公司 | Tire sidewall rubber without mold release agent |
| CN105906890A (en) * | 2016-06-21 | 2016-08-31 | 柳州市中配橡塑配件制造有限公司 | Method for improving vehicle rubber component wear resistance |
| CN106146935A (en) * | 2016-07-05 | 2016-11-23 | 四川远星橡胶有限责任公司 | Automobile tire burst prevention sidewall supports glue and calendering process thereof |
| CN109043963A (en) * | 2018-10-31 | 2018-12-21 | 浙江想能睡眠科技股份有限公司 | A kind of embedded soft or hard intelligence control mattress of controller |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094065A (en) * | 1993-04-22 | 1994-10-26 | 鞍山钢铁公司 | Super wearproof rubber liner for cold burden and manufacture method |
| CN100469830C (en) * | 2005-12-03 | 2009-03-18 | 河北九星橡塑制品有限公司 | Abrasive synthetic rubber material and its production |
-
2009
- 2009-03-31 CN CN2009100201279A patent/CN101538378B/en active Active
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857685A (en) * | 2010-06-08 | 2010-10-13 | 山东八一轮胎制造有限公司 | Low heat generation and fatigue resistance tyre pad glue and production process thereof |
| CN102040754A (en) * | 2010-12-13 | 2011-05-04 | 四川轮胎橡胶（集团）股份有限公司 | Bias tire shoulder stock |
| CN102040754B (en) * | 2010-12-13 | 2012-03-21 | 四川轮胎橡胶（集团）股份有限公司 | Bias tire shoulder stock |
| CN102276882A (en) * | 2011-07-19 | 2011-12-14 | 中橡集团曙光橡胶工业研究设计院 | Tread rubber with high-cutting and tearing resistant performance and low-dynamic heat generation |
| CN102924757A (en) * | 2011-08-12 | 2013-02-13 | 招远市泰仑特塑胶化工有限公司 | External-layer low-hardness rubber fender |
| CN102492186A (en) * | 2011-12-08 | 2012-06-13 | 四川凯力威科技股份有限公司 | Composite sidewall filling rubber formula rubber material for all-steel radial tire |
| CN102746543B (en) * | 2012-07-10 | 2015-03-04 | 山东琪美达轮胎有限公司 | Environment-friendly rubber inner tube and method for producing same |
| CN102746543A (en) * | 2012-07-10 | 2012-10-24 | 山东琪美达轮胎有限公司 | Environment-friendly rubber inner tube and method for producing same |
| CN104419027A (en) * | 2013-09-08 | 2015-03-18 | 青岛蓝农谷农产品研究开发有限公司 | Preparation method of anti-skid all-steel radial tyre |
| CN103483658A (en) * | 2013-09-22 | 2014-01-01 | 赛轮股份有限公司 | Rubber compound high in safety performance of processing and technology thereof |
| CN103642090A (en) * | 2013-11-19 | 2014-03-19 | 山东永泰化工有限公司 | High-temperature resistant tread rubber used for car semi-steel radial tyres |
| CN103980556A (en) * | 2014-05-05 | 2014-08-13 | 中橡集团曙光橡胶工业研究设计院 | High-wear-resistant high-strength precured tread rubber for tyre retreading of truck tyre |
| CN105646954A (en) * | 2014-12-02 | 2016-06-08 | 四川轮胎橡胶（集团）股份有限公司 | Tire sidewall rubber without mold release agent |
| CN104650402A (en) * | 2015-01-19 | 2015-05-27 | 上海轮胎橡胶（集团）股份有限公司轮胎研究所 | Improved tread rubber material and preparation method thereof |
| CN104844846A (en) * | 2015-04-25 | 2015-08-19 | 安徽微威胶件集团有限公司 | Formula for oil resistant and environment-friendly rubber |
| CN105906890A (en) * | 2016-06-21 | 2016-08-31 | 柳州市中配橡塑配件制造有限公司 | Method for improving vehicle rubber component wear resistance |
| CN106146935A (en) * | 2016-07-05 | 2016-11-23 | 四川远星橡胶有限责任公司 | Automobile tire burst prevention sidewall supports glue and calendering process thereof |
| CN109043963A (en) * | 2018-10-31 | 2018-12-21 | 浙江想能睡眠科技股份有限公司 | A kind of embedded soft or hard intelligence control mattress of controller |
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| Publication number | Publication date |
|---|---|
| CN101538378B (en) | 2011-03-09 |
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