CN103820776A - Method for modifying aluminium profile for buildings - Google Patents
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- CN103820776A CN103820776A CN201410104902.XA CN201410104902A CN103820776A CN 103820776 A CN103820776 A CN 103820776A CN 201410104902 A CN201410104902 A CN 201410104902A CN 103820776 A CN103820776 A CN 103820776A
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Abstract
The invention relates to modification of aluminium profiles and in particular relates to a method for modifying an aluminium profile for buildings. The method comprises the steps of smelting aluminium ingots into molten aluminium, adding mixed powder of zirconium-coated titanium dioxide and zirconium-coated silicon dioxide, maintaining the materials at a melting temperature for 3-5 hours, pouring the materials into a mold with a temperature above 600 DEG C under the pressure of 1.1-1.5MPa, and cooling and insulating so as to obtain the aluminium profile through demolding; preparing a modifying agent from 20-40 parts of sodium fluoride, 30-60 parts of ammonium bifluoride, 10-20 parts of potassium permanganate, 40-50 parts of potassium chromate, 15-25 parts of zinc phosphate, 8-18 parts of sodium nitrate, 5-12 parts of praseodymium chloride, 10-16 parts of ethylenediamine tetraacetic acid, 7-14 parts of malic acid, 8-12 parts of sodium dodecyl benzene sulfate, 6-13 parts of nickel sulfate, 15-25 parts of triethanolamine, 5-10 parts of reducing agents containing alkali metals, 7-13 parts of chlorinated polypropylene or polyolefin substrate adhesion promoter and 500-900 parts of water by weight, and controlling the pH value to be 3-4, thus obtaining the modifying agent; dipping and drying twice to obtain a modified aluminium profile. The prepared aluminium profile is bright and soft, has excellent corrosion resistance and is safe and environment-friendly.
Description
Technical field
The present invention relates to the modification of aluminium section bar, relate in particular to a kind of aluminium section for buildings method of modifying.
Background technology
Aluminium alloy extrusions for building is anti-corrosion owing to requiring, weather-proof, wear-resisting, decorative appearance is good and the over-all properties of height such as long service life grade, therefore, aluminium section bar is before techniques such as adopting electrostatic powder coating and the coating of fluorocarbon resin paint is carried out surfacecti proteon decoration, must carry out surface chemistry conversion processing, to improve the bonding force of coating and base material and to meet high anti-corrosion requirement.
CN102828073B (2014-1-8) discloses a kind of production method of powder spraying aluminium alloy extrusions, but the performance of this aluminium alloy extrusions still haves much room for improvement.
Summary of the invention
The object of this invention is to provide that a kind of light is soft, aluminium section for buildings method of modifying that solidity to corrosion is superior, safety and environmental protection.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs:
A kind of aluminium section for buildings method of modifying, it comprises the following steps successively:
(1) aluminium section bar preparation: aluminium ingot is smelted into liquid aluminium, adds the titanium dioxide of zirconium parcel and the silicon-dioxide mixed powder of zirconium parcel, then keep 3-5 hour under melt temperature; Then under 1.1-1.5MPa pressure, be poured in more than 600 ℃ moulds, then carry out cooling, insulation, the demoulding goes out aluminium section bar;
(2) properties-correcting agent preparation: prepare by weight Sodium Fluoride 20-40 part, ammonium bifluoride 30-60 part, potassium permanganate 10-20 part, potassiumchromate 40-50 part, zinc phosphate 15-25 part, SODIUMNITRATE 8-18 part, praseodymium chloride 5-12 part, ethylenediamine tetraacetic acid (EDTA) 10-16 part, oxysuccinic acid 7-14 part, dodecyl phenenyl sulfate 8-12 part, single nickel salt 6-13 part, trolamine 15-25 part, contain alkali-metal reductive agent 5-10 weight part, Chlorinated Polypropylene III or the polyolefin substrate adhesion promoter of 7-13 part weight, water 500-900 part, control pH value 3-4 and obtain properties-correcting agent,
(3) utilize described properties-correcting agent that aluminium section bar is carried out to two aluminium section bars that soak after two dry acquisition modifications.
Advantage of the present invention is:
1. the aluminium section bar internal performance that prepared by the present invention is stablized, over-all properties is as good in stretchiness, hardness and intensity, good for the performance of aftertreatment processing;
2. the properties-correcting agent of preparation specific components, makes it have anticorrosion and promotes bright dual modified effect, has improved the performance of aluminium section bar; Add adhesion promoter, improved the consistency between each component, there will not be layering after bright sanitas is long placed in, and improved to a great extent the sticking power of itself and aluminium section bar; The present invention is different from conventional single modification, but adjusts formula of modifier and content, obtains stability and good dispersity dual modified dose;
3. coordinate dual dipping and dry, make its smooth surface, bright soft, there is superior erosion resistance; After the present invention is different from conventional dip treating modification, directly washing is dry, but after flooding for the first time, directly carry out microwave drying, make properties-correcting agent not only be tightly adhered to Surface of profile, and part effective constituent can be infiltrated wherein, part composition can overcome again and suppresses excessive corrosion to aluminium section bar of other composition and play corrosion inhibition, thereby bring into play mutual coordinative role, obtained superior erosion resistance and soft gloss;
4. in properties-correcting agent of the present invention, do not contain traditional soda acid, little to aluminium section bar loss, safety and environmental protection.
As preferably, the silicon-dioxide of the titanium dioxide of described zirconium parcel and zirconium parcel 1:2-3 composition mixed powder in mass ratio, described mixed powder accounts for the 0.5-1.2% of described quality of ingot aluminum.
As preferably, in described properties-correcting agent, also comprise and contain alkali-metal reductive agent 5-10 weight part.
More preferably, described in, contain alkali-metal reductive agent and be one or more in sodium borohydride, POTASSIUM BOROHYDRIDE, sodium-metaphosphate or Trisodium Citrate.
Contriver finds, adds the mildness that can increase aluminium section bar modified surface glossiness after this auxiliary agent.
As preferably, in described properties-correcting agent, also include crown ether 8-15 part.
Add properties-correcting agent stability and good dispersity after this material, storage time is long.
More preferably, described crown ether be bicyclohexane also-18-hat-6.
Contriver finds, adds the mildness that can increase aluminium section bar modified surface glossiness after this auxiliary agent.
More preferably, be poured into after being cooled to 350-450 ℃ by 60-80 per hour ℃ speed after mould and be incubated 2-3 hour, be then cooled to 80-100 ℃ of insulation 1-2 hour by 30-40 per hour ℃ speed again; Normal temperature cooling and demolding goes out aluminium section bar again.
More preferably, be poured into and be cooled to 80-100 ℃ of insulation by 30-40 per hour ℃ speed after mould and obtain the first insulation product after 1-2 hour; Described the first insulation product are heated to 380-440 ℃, are incubated the second insulation product that obtain for 0.5-1 hour; Then utilize extrusion machine by described the second insulation product extrusion moulding; Treat that extrusion moulding thing is down to 80-100 ℃, quenching 20-40s, then normal temperature cooling and demolding goes out aluminium section bar.
As preferably, described step (3) two is soaked two and is dryly specifically comprised:
1. dip treating for the first time: described properties-correcting agent is heated to 30-40 ℃, then aluminium section bar is flooded to wherein 2-4min;
2. dry for the first time: the aluminium section bar after dip treating is for the first time carried out to heat-wind circulate drying 40-50min at 80-95 ℃ in temperature;
3. dip treating for the second time: flood for the second time under microwave vacuum condition, specifically being evacuated to vacuum tightness is-0.02MPa～-0.001MPa, carry out again microwave treatment, microwave frequency is 100MHz～230MHz, by the microwave treatment 3～7s in the bright sanitas after dip treating for the first time of dried aluminium section bar for the first time;
4. wash for the second time and be dried: flowing water washs to elutant pH value for neutral, then 40-48 ℃ of oven dry.
Specific dual dipping and dry, makes its smooth surface, bright soft, has superior erosion resistance; After the present invention is different from conventional dip treating modification, directly washing is dry, but after flooding for the first time, directly carry out microwave drying, make properties-correcting agent not only be tightly adhered to Surface of profile, and part effective constituent can be infiltrated wherein, part composition can overcome again and suppresses excessive corrosion to aluminium section bar of other composition and play corrosion inhibition, thereby bring into play mutual coordinative role, obtained superior erosion resistance and soft gloss.
As preferably, in described dip treating for the second time, add dibenzyl xenol polyoxyethylene polyoxypropylene ether 9-15 weight part to the bright sanitas after dip treating for the first time, then carry out microwave treatment.
Aluminium section bar internal performance prepared by the present invention is stablized, over-all properties is as good in stretchiness, hardness and intensity.
Embodiment
Embodiment mono-
Aluminium section bar preparation: aluminium ingot is smelted into liquid aluminium, adds the titanium dioxide of the zirconium parcel of 1:2 composition and the silicon-dioxide mixed powder of zirconium parcel in mass ratio, mixed powder accounts for 0.5% of quality of ingot aluminum, then keeps under melt temperature 3 hours; Then under 1.1MPa pressure, be poured in more than 600 ℃ moulds, be poured into after being cooled to 350 ℃ by 60-80 per hour ℃ speed after mould and be incubated 2 hours, be then cooled to 80 ℃ of insulations 1 hour by 30 ℃ of speed per hour again; Normal temperature cooling and demolding goes out aluminium section bar again.
The preparation of light rot-resistant aluminium section bar:
Properties-correcting agent preparation: 900 parts, Chlorinated Polypropylene III, water that the chlorinity of preparing by weight 40 parts of Sodium Fluorides, 60 parts of ammonium bifluorides, 20 parts, potassium permanganate, 50 parts of potassiumchromates, 25 parts of zinc phosphates, 18 parts of SODIUMNITRATE, 12 parts of praseodymium chlorides, 16 parts of ethylenediamine tetraacetic acid (EDTA)s, 14 parts of oxysuccinic acid, 12 parts of dodecyl phenenyl sulfates, 13 parts of single nickel salts, 25 parts of trolamines, sodium-metaphosphate 8 weight parts, 10 parts of weight is 20-40%; Control pH value 4 and obtain properties-correcting agent;
Dip treating for the first time: properties-correcting agent is heated to 40 ℃, then aluminium section bar is flooded to wherein 4min;
Dry for the first time: the aluminium section bar after dip treating is for the first time carried out to heat-wind circulate drying 50min at 95 ℃ in temperature;
Dip treating for the second time: flood for the second time under microwave vacuum condition, specifically being evacuated to vacuum tightness is-0.02MPa, carry out microwave treatment, microwave frequency is 100MHz again, by the microwave treatment 3s in the bright sanitas after dip treating for the first time of dried aluminium section bar for the first time;
Wash for the second time and be dried: it is neutral that flowing water washs to elutant pH value, then obtains bright rot-resistant aluminium section bar 40 ℃ of oven dry.Product performance are tested in table 1.
Embodiment bis-
Aluminium section bar preparation: aluminium ingot is smelted into liquid aluminium, adds the titanium dioxide of the zirconium parcel of 1:3 composition and the silicon-dioxide mixed powder of zirconium parcel in mass ratio, mixed powder accounts for 1.2% of quality of ingot aluminum, then keeps under melt temperature 5 hours; Then under 1.5MPa pressure, be poured in more than 600 ℃ moulds, be poured into after being cooled to 450 ℃ by 80 ℃ of speed per hour after mould and be incubated 3 hours, be then cooled to 100 ℃ of insulations 2 hours by 40 ℃ of speed per hour again; Normal temperature cooling and demolding goes out aluminium section bar again.
The preparation of light rot-resistant aluminium section bar:
Properties-correcting agent preparation: prepare by weight 900 parts of 40 parts of Sodium Fluorides, 60 parts of ammonium bifluorides, 20 parts, potassium permanganate, potassiumchromate 40-50 part, 25 parts of zinc phosphates, 18 parts of SODIUMNITRATE, 12 parts of praseodymium chlorides, 16 parts of ethylenediamine tetraacetic acid (EDTA)s, 14 parts of oxysuccinic acid, 12 parts of dodecyl phenenyl sulfates, 13 parts of single nickel salts, 25 parts of trolamines, POTASSIUM BOROHYDRIDE 10 weight parts, the polyolefin substrate adhesion promoter of 13 parts of weight, water; Control pH value 4 and obtain properties-correcting agent;
Dip treating for the first time: properties-correcting agent is heated to 40 ℃, then aluminium section bar is flooded to wherein 4min;
Dry for the first time: the aluminium section bar after dip treating is for the first time carried out to heat-wind circulate drying 50min at 95 ℃ in temperature;
Dip treating for the second time: flood for the second time under microwave vacuum condition, specifically being evacuated to vacuum tightness is-0.001MPa, carry out microwave treatment, microwave frequency is 230MHz again, by the microwave treatment 7s in the bright sanitas after dip treating for the first time of dried aluminium section bar for the first time;
Wash for the second time and be dried: it is neutral that flowing water washs to elutant pH value, then obtains bright rot-resistant aluminium section bar 48 ℃ of oven dry.
Embodiment tri-
Aluminium section bar preparation: aluminium ingot is smelted into liquid aluminium, adds the titanium dioxide of the zirconium parcel of 1:2-3 composition and the silicon-dioxide mixed powder of zirconium parcel in mass ratio, mixed powder accounts for 0.9% of quality of ingot aluminum, then keeps under melt temperature 4 hours; Then under 1.3MPa pressure, be poured in more than 600 ℃ moulds, be poured into after being cooled to 390 ℃ by 70 ℃ of speed per hour after mould and be incubated 2.5 hours, be then cooled to 90 ℃ of insulations 1.5 hours by 38 ℃ of speed per hour again; Normal temperature cooling and demolding goes out aluminium section bar again.
The preparation of light rot-resistant aluminium section bar:
Properties-correcting agent preparation: prepare by weight 600 parts of 26 parts of Sodium Fluorides, 40 parts of ammonium bifluorides, 18 parts, potassium permanganate, 46 parts of potassiumchromates, 19 parts of zinc phosphates, 12 parts of SODIUMNITRATE, 9 parts of praseodymium chlorides, 13 parts of ethylenediamine tetraacetic acid (EDTA)s, 9 parts of oxysuccinic acid, 10 parts of dodecyl phenenyl sulfates, 11 parts of single nickel salts, 21 parts of trolamines, sodium borohydride 5 weight parts, the Chlorinated Polypropylene III substrate adhesion promoter of 7 parts of weight, water; Control pH value 4 and obtain properties-correcting agent;
Dip treating for the first time: properties-correcting agent is heated to 35 ℃, then aluminium section bar is flooded to wherein 3min;
Dry for the first time: the aluminium section bar after dip treating is for the first time carried out to heat-wind circulate drying 45min at 85 ℃ in temperature;
Dip treating for the second time: flood for the second time under microwave vacuum condition, specifically being evacuated to vacuum tightness is-0.01MPa, carry out microwave treatment, microwave frequency is 130MHz again, by the microwave treatment 5s in the bright sanitas after dip treating for the first time of dried aluminium section bar for the first time;
Wash for the second time and be dried: it is neutral that flowing water washs to elutant pH value, then obtains bright rot-resistant aluminium section bar 45 ℃ of oven dry.
Embodiment tetra-
With embodiment mono-, different is is poured into time prepared by aluminium section bar and is cooled to 80 ℃ of insulations by 30 ℃ of speed per hour after mould and obtains the first insulation product after 1 hour; The first insulation product are heated to 380 ℃, are incubated the second insulation product that obtain for 0.5 hour; Then utilize extrusion machine by the second insulation product extrusion moulding; Treat that extrusion moulding thing is down to 80 ℃, quenching 20s, then normal temperature cooling and demolding goes out aluminium section bar.
In properties-correcting agent, also comprise bicyclohexane also-15 parts of 18-hat-6 crown ethers.
In dip treating for the second time, add dibenzyl xenol polyoxyethylene polyoxypropylene ether 15 weight parts to the bright sanitas after dip treating for the first time, then carry out microwave treatment.
Embodiment five
With embodiment mono-, different is is poured into time prepared by aluminium section bar and is cooled to 100 ℃ of insulations by 40 ℃ of speed per hour after mould and obtains the first insulation product after 2 hours; The first insulation product are heated to 440 ℃, are incubated the second insulation product that obtain for 1 hour; Then utilize extrusion machine by the second insulation product extrusion moulding; Treat that extrusion moulding thing is down to 100 ℃, quenching 40s, then normal temperature cooling and demolding goes out aluminium section bar.
In properties-correcting agent, also comprise bicyclohexane also-8 parts of 18-hat-6 crown ethers.
In dip treating for the second time, add dibenzyl xenol polyoxyethylene polyoxypropylene ether 9 weight parts to the bright sanitas after dip treating for the first time, then carry out microwave treatment.
Embodiment six
With embodiment mono-, different is is poured into time prepared by aluminium section bar and is cooled to 90 ℃ of insulations by 30-40 per hour ℃ speed after mould and obtains the first insulation product after 1.5 hours; The first insulation product are heated to 400 ℃, are incubated the second insulation product that obtain for 0.8 hour; Then utilize extrusion machine by the second insulation product extrusion moulding; Treat that extrusion moulding thing is down to 90 ℃, quenching 30s, then normal temperature cooling and demolding goes out aluminium section bar.
In properties-correcting agent, also comprise bicyclohexane also-11 parts of 18-hat-6 crown ethers.
In dip treating for the second time, add dibenzyl xenol polyoxyethylene polyoxypropylene ether 13 weight parts to the bright sanitas after dip treating for the first time, then carry out microwave treatment.
comparative example one
Aluminium section bar is purchased from the HDHD-8-4080C aluminium section bar of the folded aluminium producing of Shanghai letter.
Properties-correcting agent preparation: prepare by weight 30 parts of Sodium Fluorides, 15 parts, potassium permanganate, 45 parts of potassiumchromates, 12 parts of SODIUMNITRATE, 8 parts of praseodymium chlorides, 9 parts of oxysuccinic acid, 8 parts of single nickel salts, water 500-900 part; Control pH value 3-4 and obtain properties-correcting agent;
Light rot-resistant aluminium section bar preparation technology is with embodiment mono-.
comparative example two
Aluminium section bar is purchased from the HDHD-8-4080C aluminium section bar of the folded aluminium producing of Shanghai letter.
Properties-correcting agent is prepared with embodiment mono-.
Light rot-resistant aluminium section bar preparation technology comprises dip treating and dry, specifically properties-correcting agent is heated to 35 ℃, then aluminium section bar is flooded to wherein 3min; Flowing water washs to elutant pH value for neutral, then 45 ℃ of oven dry.
Table 1 embodiment and comparative example's product properties Data Comparison
This specific embodiment is only explanation of the invention; it is not limitation of the present invention; those skilled in the art are reading after this specification sheets and can make to the present embodiment the modification that there is no creative contribution as required, but as long as within the scope of claim of the present invention, are all subject to the protection of patent law.
Claims (9)
1. an aluminium section for buildings method of modifying, is characterized in that comprising the following steps successively:
(1) aluminium section bar preparation: aluminium ingot is smelted into liquid aluminium, adds the titanium dioxide of zirconium parcel and the silicon-dioxide mixed powder of zirconium parcel, then keep 3-5 hour under melt temperature; Then under 1.1-1.5MPa pressure, be poured in more than 600 ℃ moulds, then carry out cooling, insulation, the demoulding goes out aluminium section bar;
(2) properties-correcting agent preparation: prepare by weight Sodium Fluoride 20-40 part, ammonium bifluoride 30-60 part, potassium permanganate 10-20 part, potassiumchromate 40-50 part, zinc phosphate 15-25 part, SODIUMNITRATE 8-18 part, praseodymium chloride 5-12 part, ethylenediamine tetraacetic acid (EDTA) 10-16 part, oxysuccinic acid 7-14 part, dodecyl phenenyl sulfate 8-12 part, single nickel salt 6-13 part, trolamine 15-25 part, contain alkali-metal reductive agent 5-10 weight part, Chlorinated Polypropylene III or the polyolefin substrate adhesion promoter of 7-13 part weight, water 500-900 part, control pH value 3-4 and obtain properties-correcting agent,
(3) utilize described properties-correcting agent that aluminium section bar is carried out to two aluminium section bars that soak after two dry acquisition modifications.
2. a kind of aluminium section for buildings method of modifying according to claim 1, it is characterized in that: the silicon-dioxide of the titanium dioxide of described zirconium parcel and zirconium parcel 1:2-3 composition mixed powder in mass ratio, described mixed powder accounts for the 0.5-1.2% of described quality of ingot aluminum.
3. a kind of aluminium section for buildings method of modifying according to claim 2, is characterized in that: described in to contain alkali-metal reductive agent be one or more in sodium borohydride, POTASSIUM BOROHYDRIDE, sodium-metaphosphate or Trisodium Citrate.
4. a kind of aluminium section for buildings method of modifying according to claim 3, is characterized in that: in described properties-correcting agent, also include crown ether 8-15 part.
5. a kind of aluminium section for buildings method of modifying according to claim 4, is characterized in that: described crown ether be bicyclohexane also-18-hat-6.
6. a kind of aluminium section for buildings method of modifying according to claim 4, it is characterized in that: be poured into after being cooled to 350-450 ℃ by 60-80 per hour ℃ speed after mould and be incubated 2-3 hour, be then cooled to 80-100 ℃ of insulation 1-2 hour by 30-40 per hour ℃ speed again; Normal temperature cooling and demolding goes out aluminium section bar again.
7. a kind of aluminium section for buildings method of modifying according to claim 4, is characterized in that: be poured into and be cooled to 80-100 ℃ of insulation by 30-40 per hour ℃ speed after mould and obtain the first insulation product after 1-2 hour; Described the first insulation product are heated to 380-440 ℃, are incubated the second insulation product that obtain for 0.5-1 hour; Then utilize extrusion machine by described the second insulation product extrusion moulding; Treat that extrusion moulding thing is down to 80-100 ℃, quenching 20-40s, then normal temperature cooling and demolding goes out aluminium section bar.
8. according to a kind of aluminium section for buildings method of modifying described in claim 6 or 7, it is characterized in that: described step (3) two is soaked two and dryly specifically comprised:
1. dip treating for the first time: described properties-correcting agent is heated to 30-40 ℃, then aluminium section bar is flooded to wherein 2-4min;
2. dry for the first time: the aluminium section bar after dip treating is for the first time carried out to heat-wind circulate drying 40-50min at 80-95 ℃ in temperature;
3. dip treating for the second time: flood for the second time under microwave vacuum condition, specifically being evacuated to vacuum tightness is-0.02MPa～-0.001MPa, carry out again microwave treatment, microwave frequency is 100MHz～230MHz, by the microwave treatment 3～7s in the bright sanitas after dip treating for the first time of dried aluminium section bar for the first time;
4. wash for the second time and be dried: flowing water washs to elutant pH value for neutral, then 40-48 ℃ of oven dry.
9. a kind of aluminium section for buildings method of modifying according to claim 8, it is characterized in that: in described dip treating for the second time, add dibenzyl xenol polyoxyethylene polyoxypropylene ether 9-15 weight part to the bright sanitas after dip treating for the first time, then carry out microwave treatment.
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| CN107042731A (en) * | 2017-05-03 | 2017-08-15 | 安徽同曦金鹏铝业股份有限公司 | Wood grain profile production technology |
| CN109161879A (en) * | 2018-09-10 | 2019-01-08 | 温州天迪铝业有限公司 | Bright corrosion-resistant environmental protection aluminum profile preparation method |
| CN111069322A (en) * | 2019-12-25 | 2020-04-28 | 安徽鑫发铝业有限公司 | Bright anticorrosive aluminum profile for air purifier and preparation method thereof |
| CN112391620A (en) * | 2020-11-19 | 2021-02-23 | 肇庆新联昌金属实业有限公司 | Method for modifying aluminum profile for building |
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| CN107042731A (en) * | 2017-05-03 | 2017-08-15 | 安徽同曦金鹏铝业股份有限公司 | Wood grain profile production technology |
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| CN111069322A (en) * | 2019-12-25 | 2020-04-28 | 安徽鑫发铝业有限公司 | Bright anticorrosive aluminum profile for air purifier and preparation method thereof |
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| CN103820776B (en) | 2015-11-25 |
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