CN103740248A - Smooth wear-resistant high-hardness one-component water-based woodenware paint and preparation method thereof - Google Patents
Smooth wear-resistant high-hardness one-component water-based woodenware paint and preparation method thereof Download PDFInfo
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Abstract
The invention provides a smooth wear-resistant high-hardness one-component water-based woodenware paint and a preparation method thereof. The paint includes a finishing paint and a priming paint. The finishing paint is prepared from the following components: a film-forming emulsion, a preservative, a defoaming agent, wetting agents, deionized water, a leveling agent, dipropylene glycol mono butyl ether, alcohol ester-12, thickening agents, and an flash rust prevention agent; the priming paint is prepared from the following components: a film-forming emulsion, the preservative, a zinc stearate emulsion, deionized water, the defoaming agent, the wetting agents, the leveling agent, dipropylene glycol mono butyl ether, alcohol ester-12, the thickening agents, and the flash rust prevention agent. The paint has smooth surface and strong adhesion force, has the hardness and the wear resistance which are higher than technical requirements of GB/T239992009, and is the high-performance environmental-protection water-based paint.
Description
Technical field:
The present invention relates to paint field, be specifically related to single-component water-based woodwork coating of a kind of level and smooth wear-resisting high rigidity and preparation method thereof.
Background technology:
Along with social development and progress, people's environmental protection consciousness constantly promotes, and the growing tension of petroleum resources has accelerated to paint the paces of Water-borne modification.The environmental regulation that various countries formulate all has strict restriction to volatile organic compounds in coating (VOC), China has successively put into effect GB1851-2009 < < upholstery material, limits of harmful substances > > in solvent-borne type woodwork coating, GB24410-2009 < < indoor decorating and refurnishing materials, limits of harmful substances > > in water-borne wood coating, limiting the quantity of of VOC in indoor paint proposed to explicitly call for.Water-borne wood coating is compared with solvent based coating, has environmental protection, low-carbon (LC), safety, the advantage such as easy to use, and double-component waterborne polyurethane woodwork coating performance can compare favourably with solvent based coating, but higher price is difficult to be accepted by market.The problems such as the reasonable price of single-component water-based woodwork coating, is easy to be accepted by user, and initial stage hardness is low but ubiquity is filmed, fullness ratio is poor, poor, the anti-contamination ability of anti-after tackiness is low.The present invention is by science selection, optimization of C/C composites, improve technique, General Promotion at the bottom of single-component water-based woodenware, the performance of coating materials, improved the common deficiency of filming and existing, the film performance of the single-component water-based woodwork coating of development meets or surpasses the technical requirements of indices in GB/T23999-2009 < < indoor decorating use woodwork coating > >, limits of harmful substances meets the requirement of limits of harmful substances > > in GB24410-2009 < < indoor decorating and refurnishing materials water-borne wood coating.
Summary of the invention:
The invention provides a kind of level and smooth wear-resisting high rigidity list group water-borne wood coating and preparation method thereof, coating of the present invention has surface smoothing, strong adhesion, hardness and wear resistance, higher than the technical requirements of GB/T23999-2009, are a kind of high-performance environment-friendly water-borne coatingss.
Technical scheme of the present invention:
The single-component water-based woodwork coating of level and smooth wear-resisting high rigidity, comprises finish paint and priming paint, it is characterized in that, described finish paint and priming paint are made by the component of following weight part respectively:
Finish paint:
Filming emulsion 80-85, sanitas 0.07-0.1, defoamer 0.1-0.2, wetting agent 0.1-0.25, deionized water 5-6, flow agent 0.1-0.2, dipropylene glycol butyl ether 1-3, lauryl alcohol ester 2-4, thickening material 0.3-0.8, anti-sudden strain of a muscle rust agent 0.1-0.2;
Priming paint:
Filming emulsion 80-95, sanitas 0.07-0.1, Zinic stearas emulsion 8-12, deionized water 2-3, defoamer 0.1-0.2, wetting agent 0.15-0.25, flow agent 0.1-0.2, dipropylene glycol butyl ether 2-3, lauryl alcohol ester 2-4, thickening material 0.9-1.5, anti-sudden strain of a muscle rust agent 0.1-0.2.
The described single-component water-based woodwork coating of a kind of level and smooth wear-resisting high rigidity, is characterized in that: the preparation method of described finish paint is:
By formula rate, take each component raw material, first deionized water is added in stainless steel still, under whipped state, slowly add successively sanitas, defoamer, wetting agent, the agent of anti-sudden strain of a muscle rust, with the rotating speed of 300-400 rev/min, stir 20-30 minute, then rotating speed is transferred to 400-500 rev/min, slowly add again filming emulsion, and be 8.5-9 with the pH value of PH conditioning agent tune system, add part aqueous thickener solution to adjust viscosity to 75-85KU value, slowly add successively flow agent, dipropylene glycol butyl ether, lauryl alcohol ester, etc. remaining material, stir 40-50 minute, until be homogeneous system, finally again with aqueous thickener solution, adjust viscosity to 75-85KU value, with 120 eye mesh screens, filter, metering, packing, .
The described single-component water-based woodwork coating of a kind of level and smooth wear-resisting high rigidity, is characterized in that: the preparation method of described priming paint is:
First by formula rate, weighed each component raw material,
Then deionized water is added in stainless steel still, under whipped state, add sanitas, slowly add successively again Zinic stearas emulsion, defoamer, wetting agent, the agent of anti-sudden strain of a muscle rust, with the rotating speed of 300-400 rev/min, stir 20-30 minute, then rotating speed is transferred to 400-500 rev/min, slowly add again filming emulsion, and to regulate pH value be 8.5-9, add the aqueous thickener solution that part has been dissolved in advance to adjust viscosity to qualified, slowly adding successively flow agent, dipropylene glycol butyl ether, lauryl alcohol ester, etc. remaining material, stir 40-50 minute, until be homogeneous system, finally again with aqueous thickener solution, adjust viscosity to 75-85KU value, with 120 eye mesh screens, filter, metering, packing, .
Filming emulsion used in finish paint provides for Yantai ten thousand China
4210 anionic modified polyurethane dispersions; Filming emulsion used in priming paint provides for Yantai ten thousand China
4110 Hes
4300 two kinds of emulsion blendings and obtaining.
The present invention program's deterministic process:
1, emulsion determines
In water-borne wood coating, film forming matter is generally polymer emulsion or aqueous dispersion, accounts for 80% left and right (weight ratio) in formula, and the kind of emulsion and performance are the determinatives of water-borne wood coating over-all properties height.
Water dispersible alkyd has the advantages such as gloss is high, fullness ratio is high, good leveling property, but its dried coating film is slow, hardness is low, need to add siccative, and siccative contains heavy metal conventionally; ACRYLIC EMULSION has that cost is lower, quick-drying, the advantage such as fast light, weather-proof, but it is filmed, anti-after tackiness is poor, snappiness is low; Single-component water-based polyurethane dispersions (WPU) has advantage at aspects such as wear resistance, hardness, snappiness, anti-stick degree, fullness ratio, levelling properties, but it is filmed, alcohol resistance, water tolerance are slightly poor, and price is higher; Silicon the third modified polyurethane emulsion be a kind of by acrylic molecules (organosilicon molecule), polyurethane molecular by the synthetic polymer emulsion of network interpenetrating technology, compare with polyurethane dispersions co-mixing system with ACRYLIC EMULSION, over-all properties is more excellent, package stability is better, is applicable to medium-to-high grade aqueous wooden ware face and is coated with.
4210 anionic modified polyurethane dispersions belong to this type emulsion; Because this emulsion has adopted special self-crosslinking technology and rear crosslinking technological thereby had extraordinary contamination resistance, wear resistance and anti-after tackiness.
Aqueous wooden ware priming paint should meet the following aspects with emulsion property: (1) quick-drying and sanding property; (2) cross-linking density is high, and back cover is good; (3) water-tolerant; (4) infiltration wettability is strong; (5) transparency is good.
4300 propyl benzene copolymer emulsions have above characteristic,
the 4300th, a multiple cross-linked benzene emulsion, can balance cross-linked speed the too fast or deficiency brought excessively slowly, make to film simultaneously just can obtain at short notice good hardness, grinability, water tolerance etc. wet.Its with
after 4110 anion-type water-thinned polyurethane dispersion (aliphatics) blend, be applied to aqueous wooden ware primary coat, the hardness of filming, heat resistanceheat resistant after tackiness further improve.
2, polishing agent determines
Aqueous wooden ware primary coat polishing can increase smoothness and the ply adhesion of coating, and conventional polishing agent has Zinic stearas, talcum powder, silica powder etc., and different polishing agent performances as shown in Figure 1;
More than conventional polishing agent adds water-borne wood coating system to need high speed dispersion or sand milling.The present invention selects NMFH-104 aqueous coating Zinic stearas emulsion, only need under stirring at low speed, add, favourable to the stability of water-borne wood coating, does not precipitate simultaneously, and the transparency is good, easily polishing, and tool cost is reasonable, and addition is 8-12%.
3, wetting agent determines
Water-borne wood coating the condition of the abundant levelling of wood surface for the contact angle between the two be zero, the surface tension of wood surface tension force and water-borne wood coating is closely close.The lower most of < 40mN/m of surface tension of timber, and the surface tension of water is up to 72.8mN/m, so do not add the water-borne wood coating of wetting agent in the poor effect of the wetting levelling of wood surface, film and easily produce the surface imperfection such as reunion, cissing, shrinkage cavity.
Add suitable base material wetting agent, just can reach the effect that reduces coating surface tension force, promotes wetting levelling.Base material wetting agent molecule contains hydrophobic and hydrophilic two kinds of groups conventionally, the molecule of this structure adds aqueous coating system, wetting agent molecule meeting directional realignment, the surface tension of coating is declined rapidly, but the tendency that also has steady bubble simultaneously, and bubble easily causes film coated surface shrinkage cavity, so the selection of wetting agent is carried out in accordance with following principle: (1) can fast reducing static surface tension, can reduce rapidly dynamic surface tension again; (2) can reduce the surface tension of solid/liquid interfaces, can reduce again the surface tension at gas/liquid interface, because water-borne wood coating is to brush or spray all can form gas/liquid interface; (3) not only without forming process but also unstable bubble; (4) good with water-borne wood coating system matching capacity, do not affect gloss and transparency, by repeatedly testing, select DOW
cF-10 and the composite mixing effect of DAPRO W-77, can effectively reduce the surface tension of system, again can be well supporting with system, not easy to foaming, steady bubble.
4, surface smoothing agent determines
The high rigidity of water-borne wood coating and smoothness can improve the resistance to blocking of woodwork coating, but surface smoothing auxiliary agent great majority are organosilicon or modified organic silicon molecular composition, when improving surface smoothness, may reduce between different coating, the sticking power between primary coat and timber.Guaranteeing under the prerequisite of sticking power, improving the smoothness of filming need to be to level and smooth auxiliary agent repeated screening, and Levaslip 455 shows good smoothness, matching capacity in system of the present invention, does not affect sticking power.
5, defoamer determines
Water-borne wood coating when the stirring of producing and construction, easy introducing air and produce a large amount of bubbles.In primary coat construction process, the bubble in timber space can be cemented out again, the tensio-active agents such as wetting agent in water-borne wood coating have the effect of foaming, steady bubble simultaneously, if do not add defoamer, can have a strong impact on the apparent state of filming.
Conventionally defoamer is along with the intermiscibility with water-based system declines, froth breaking capability improving, but intermiscibility can produce the paint film defects such as shrinkage cavity again after declining, thereby equilibrium phase dissolubility and froth breaking ability are wanted in the selection of defoamer, by great many of experiments comparison, DAPRO DF 7015 can active balance intermiscibility and froth breaking ability in water-borne wood coating system of the present invention.
6, film coalescence aid determines
Film coalescence aid can reduce the Tg temperature of emulsion, improves plastic flow and the elastic deformation of emulsion particle, improves its coalescent performance, makes emulsion at lower temperature, still have good film-forming properties.
Film coalescence aid is a kind of temporary transient softening agent, As time goes on, and film dry and volatilizing.
Conventional film coalescence aid performance is as follows:
The film coalescence aid of water-borne wood coating should have following characteristic:
(1) strong solvent of polymkeric substance, effectively reduce the Tg of polymkeric substance, and consistency is good.
(2) in water, solvability is little, easily by emulsion particle, is adsorbed and has good cohesiveness.
(3) suitable rate of volatilization, volatilization in gradient in film process, all the time of volatilizing can not be oversize.
(4) do not affect the stability (as occurred flocculation etc.) of emulsion system, easily add and be adsorbed on emulsion particle surface.
(5) low toxic and environment-friendly.
Compare by experiment, water-borne wood coating system of the present invention adopts DPnB and the composite use of Texanol, reasonably combined by consistency, rate of volatilization speed, and good gloss and levelling effect have kept filming.
7, auxiliary rheological agents determines
For water-borne wood coating, at lay up period, should there is higher low-shear viscosity, effectively prevent the precipitated and separated of coating; The in the situation that of construction high-shear, mobility is suitable good, and modest viscosity, makes water-borne wood coating have good brushing property and levelling property, and the complete viscosity of constructing rises and prevents sagging rapidly.In order to reach above object, must select suitable auxiliary rheological agents to carry out the rheological characteristics of regulation system.
At present, conventional auxiliary rheological agents mainly contains fiber ethers, alkali Swollen polyacrylate class, association type polyurethanes, inorganic bentonite class.Their mechanism of action be by hydrophobic grouping to each other or hydrophobic grouping and latex molecular association form network structure, or in water, form spacial framework by hydrogen bond action.
Ether of cellulose can affect gloss and the mechanical property of filming, and in water-borne wood coating, seldom uses; Alkali Swollen polyacrylate class poor water resistance, inorganic bentonite affects the levelling of filming, thereby should not be for water-borne wood coating system.
Association type polyurethanes thickening material adds water-borne wood coating system, and filming of obtaining is with the obvious advantage at gloss, levelling, fullness ratio, the aspect such as water-fast, and the present invention selects this WT-105A polyurethane thickener of hamming.
Advantage of the present invention
1, environmental protection, VOC is lower than the Limited Doses of GB24410-2009
By preferred emulsion, film coalescence aid and other functional agent, rational allocation, performance performance speciality separately, makes the organic volatile VOC of water-borne wood coating of the present invention lower than GB24410-2009 Limited Doses, meets the requirement of national environmental protection;
2, film height firmly, level and smooth wear-resisting, damage resistant
At aqueous wooden ware face, be coated with preferred film forming matter in formula and give coating high rigidity, actual measurement reaches H; Composite film coalescence aid makes coating finer and close smooth, efficient smooth agent, modified filler have significantly improved wear-resisting, the scratch resistance of filming, wear resistance (750g/500r) actual measurement is 0.0045g, damage resistant (200g) does not scratch, and above key technical index is all higher than the technical requirements to category-A water-borne wood coating in GB/T23999-2009;
3, aqueous wooden ware priming paint has high transparent, after construction, within 2-3 hour, can polish
Zinic stearas emulsion applications, in this aqueous wooden ware primary coat system, has high transparent, shows the native texture of timber, increases the natural beauty of life; The dryness that aqueous wooden ware primary coat is good, makes within 2-3 hour, can polish after coating construction, has significantly improved operating efficiency;
4, this aqueous wooden ware face is coated with and has good weathering resistance and stain resistance
This aqueous wooden ware face painting system adopts
4210 anionic modified polyurethane dispersions are film forming matter, the weathering resistance that existing acrylic resin is good, there are again hardness and contamination resistance that urethane resin is higher, not xanthochromia for a long time can keep filming, Levaslip 455 surface smoothing agent are applied to this system, have improved the time span (reaching 2-3 hour) of the pollutions such as coating tolerance tea, vinegar, oil, makeup;
5, the production of this water-borne wood coating, without high-speed dispersion equipment, has reduced facility investment, has increased the security of producing.
Zinic stearas emulsion applications, in this aqueous wooden ware primary coat system, can reach the fineness of water-borne wood coating requirement without high-speed dispersion equipment, and the water-borne wood coating package stability making under lower-speed state is better, and half a year is without the phenomenon of layering, minute water.
accompanying drawing explanation
Fig. 1 is the performance schematic diagram of polishing agent Zinic stearas, talcum powder, silica powder; Wherein Fig. 1 (a) is grinability; Fig. 1 (b) is extinction; Fig. 1 (c) is the transparency.
Embodiment
Formula and the technique of embodiment 1 single group water-borne wood coating (face painting)
The formula of table 1 single group water-borne wood coating (face painting) forms
Preparation technology:
1, will after deionized water metering, add in stainless steel still, start mixing control button, be transferred to rotating speed 300-400 rev/min, after metering, slowly add successively sanitas, defoamer, wetting agent, the anti-sudden strain of a muscle rust agent (object that first adds sterilant, it is the microorganism that kills as far as possible most deionized water and equipment, prevent storage process mesometamorphism), churning time 20-30 minute;
2, rotating speed is transferred to 400-500 rev/min, after metering, slowly adds emulsion, and with PH conditioning agent, to adjust the pH value of system be 8.5-9, during adjusting, should add slowly, diligent survey;
3, in the constant situation of speed, add the WT-105A aqueous thickener solution of priorization, adjust viscosity when 40-50KU value, use 3060 thickening material water liquid instead and adjust viscosity to 75-85KU value.
4, in the situation that rotating speed is constant, after metering, slowly add successively smooth agent, dipropylene glycol butyl ether, lauryl alcohol ester, modified filler, stirs more than 40 minutes, until be homogeneous system;
5, in the situation that rotating speed is constant, with 3060 thickening material water liquid, adjust viscosity to 75-85KU value (while adding the material of the 4th step, the viscosity of system can change to some extent), under the state stirring, with 120 eye mesh screens, filter, measure, pack.
If 6 production processes can not complete continuously, the microbicide solution of applicationization 0.1% sealing material surface, in case material surface skining, affects the fineness of coating.
Formula and the technique of embodiment 2 single group water-borne wood coatings (primary coat)
The formula of table 2 single group water-borne wood coating (primary coat) forms
The preparation technology of priming paint:
1, will after deionized water metering, add in stainless steel still, start mixing control button, be transferred to rotating speed 300-400 rev/min, after metering, slowly add sanitas, slowly Zinic stearas emulsion, defoamer, wetting agent, the anti-sudden strain of a muscle rust agent (object that first adds sterilant successively again, it is the microorganism that kills as far as possible most deionized water and equipment, prevent storage process mesometamorphism), churning time 20-30 minute;
2, rotating speed is transferred to 400-500 rev/min, after metering, slowly adds 4110 and 4300 emulsions, and with PH conditioning agent, to adjust the pH value of system be 8.5-9, during adjusting, should add slowly, diligent survey;
3, in fast constant situation, add the WT-105A aqueous thickener solution of priorization, adjust viscosity when 40-50KU value, use 3060 thickening material water liquid instead and adjust viscosity to 75-85KU value.
4, in the situation that rotating speed is constant, after metering, slowly add successively smooth agent, dipropylene glycol butyl ether, lauryl alcohol ester, stir more than 40 minutes, until be homogeneous system;
5, in the situation that rotating speed is constant, with 3060 thickening material water liquid, adjust viscosity to 75-85KU value (while adding the material of the 4th step, the viscosity of system can change to some extent), under the state stirring, with 120 eye mesh screens, filter, measure, pack.
If 6 production processes can not complete continuously, the microbicide solution of applicationization 0.1% sealing material surface, in case material surface skining, affects the fineness of coating.It is below the detected result of the water-borne wood coating of this invention
At the bottom of aqueous wooden ware, face is coated with performance measured result
Claims (4)
1. the single-component water-based woodwork coating of level and smooth wear-resisting high rigidity, comprises finish paint and priming paint, it is characterized in that, described finish paint and priming paint are made by the component of following weight part respectively:
Finish paint:
Filming emulsion 80-85, sanitas 0.07-0.1, defoamer 0.1-0.2, wetting agent 0.1-0.25, deionized water 5-6, flow agent 0.1-0.2, dipropylene glycol butyl ether 1-3, lauryl alcohol ester 2-4, thickening material 0.3-0.8, anti-sudden strain of a muscle rust agent 0.1-0.2;
Priming paint:
Filming emulsion 80-95, sanitas 0.07-0.1, Zinic stearas emulsion 8-12, deionized water 2-3, defoamer 0.1-0.2, wetting agent 0.15-0.25, flow agent 0.1-0.2, dipropylene glycol butyl ether 2-3, lauryl alcohol ester 2-4, thickening material 0.9-1.5, anti-sudden strain of a muscle rust agent 0.1-0.2.
2. the single-component water-based woodwork coating of a kind of level and smooth wear-resisting high rigidity according to claim 1, is characterized in that: the preparation method of described finish paint is:
By formula rate, take each component raw material, first deionized water is added in stainless steel still, under whipped state, slowly add successively sanitas, defoamer, wetting agent, the agent of anti-sudden strain of a muscle rust, with the rotating speed of 300-400 rev/min, stir 20-30 minute, then rotating speed is transferred to 400-500 rev/min, slowly add again filming emulsion, and be 8.5-9 with the pH value of PH conditioning agent tune system, add part aqueous thickener solution to adjust viscosity to 75-85KU value, slowly add successively flow agent, dipropylene glycol butyl ether, lauryl alcohol ester, etc. remaining material, stir 40-50 minute, until be homogeneous system, finally again with aqueous thickener solution, adjust viscosity to 75-85KU value, with 120 eye mesh screens, filter, metering, packing, .
3. the single-component water-based woodwork coating of a kind of level and smooth wear-resisting high rigidity according to claim 1, is characterized in that: the preparation method of described priming paint is:
First by formula rate, weighed each component raw material,
Then deionized water is added in stainless steel still, under whipped state, add sanitas, slowly add successively again Zinic stearas emulsion, defoamer, wetting agent, the agent of anti-sudden strain of a muscle rust, with the rotating speed of 300-400 rev/min, stir 20-30 minute, then rotating speed is transferred to 400-500 rev/min, slowly add again filming emulsion, and to regulate pH value be 8.5-9, add the aqueous thickener solution that part has been dissolved in advance to adjust viscosity to qualified, slowly adding successively flow agent, dipropylene glycol butyl ether, lauryl alcohol ester, etc. remaining material, stir 40-50 minute, until be homogeneous system, finally again with aqueous thickener solution, adjust viscosity to 75-85KU value, with 120 eye mesh screens, filter, metering, packing, .
4. the single-component water-based woodwork coating of a kind of level and smooth wear-resisting high rigidity according to claim 1, is characterized in that: the Lacper that the filming emulsion used in finish paint provides for Yantai ten thousand China
?4210 anionic modified polyurethane dispersions; Filming emulsion used in priming paint obtains for Lacper 4110 and 4,300 two kinds of emulsion blendings of Lacper that Yantai ten thousand China provide.
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| CN104140751A (en) * | 2014-05-20 | 2014-11-12 | 成都拜迪新材料有限公司 | Preparation method of water-based priming paint and water-based finishing paint for tower crane |
| CN104293058A (en) * | 2014-11-04 | 2015-01-21 | 徐妍玲 | Waterborne mold-proof paint |
| CN110964390A (en) * | 2019-12-20 | 2020-04-07 | 苏州浩纳新材料科技有限公司 | Bio-based super-hydrophobic coating and preparation method and application method thereof |
| CN112080196A (en) * | 2020-09-23 | 2020-12-15 | 湖北天鹅科技有限公司 | Water-based strippable coating and preparation method thereof |
| CN112457759A (en) * | 2020-12-04 | 2021-03-09 | 浙江哈斯曼涂料有限公司 | Clear primer with good adhesion effect |
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| CN104140751A (en) * | 2014-05-20 | 2014-11-12 | 成都拜迪新材料有限公司 | Preparation method of water-based priming paint and water-based finishing paint for tower crane |
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| CN112080196A (en) * | 2020-09-23 | 2020-12-15 | 湖北天鹅科技有限公司 | Water-based strippable coating and preparation method thereof |
| CN112457759A (en) * | 2020-12-04 | 2021-03-09 | 浙江哈斯曼涂料有限公司 | Clear primer with good adhesion effect |
| CN112646443A (en) * | 2020-12-24 | 2021-04-13 | 华南理工大学 | Thermal transfer printing roller coating woodware coating composition and preparation method thereof |
| CN112646443B (en) * | 2020-12-24 | 2022-04-22 | 华南理工大学 | Thermal transfer printing roller coating woodware coating composition and preparation method thereof |
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| CN103740248B (en) | 2016-09-28 |
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