CN105255205A - Low temperature recycled asphalt mixture and preparation method thereof - Google Patents
Low temperature recycled asphalt mixture and preparation method thereof Download PDFInfo
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- 239000010426 asphalt Substances 0.000 title claims abstract description 157
- 239000000203 mixture Substances 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000004064 recycling Methods 0.000 claims abstract description 12
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 11
- 238000011084 recovery Methods 0.000 claims description 85
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- 238000010276 construction Methods 0.000 claims description 12
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 10
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- 230000001172 regenerating effect Effects 0.000 claims description 9
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- 239000004575 stone Substances 0.000 abstract description 5
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Abstract
The invention relates to a low temperature recycled asphalt mixture and a preparation method thereof. The method mainly uses a low temperature recycled asphalt binder, the low temperature recycled asphalt mixture comprises 60-70 parts of petroleum asphalt, 30-40 parts of aromatic oil, 1-3 parts of thermoplastic elastomer and 0.3-0.5 part of surfactant. The low temperature recycled asphalt binder is used for producing and preparing the low temperature recycled asphalt mixture, on one hand, a waste asphalt mixture can be comprehensively regenerated, the stone resource can be used, and the original aging asphalt resource can be used to the largest extent; one the other hand, the low temperature recycled asphalt mixture has new asphalt mixture performance, can be used for a basic layer and a bottom layer of a pavement, and develops maximum value of waste asphalt mixture recycling.
Description
Technical field
The present invention relates to field of road, be specifically related to a kind of low-temp recovery asphalt and preparation method thereof.
Background technology
Highway in China construction is rapid, and the high-grade highway total kilometrage that is open to traffic leaps to second place of the world, and just with the speed increment of every 3 years newly-built 1 × 104km.Due to the comprehensive action of traffic loading and natural cause, bituminous pavement is through the use of certain time limit, and its surface layer is slowly thinning and aging gradually, there will be such as check crack, depression, rut, gathers around the various diseases such as bag and progressively expand, have a strong impact on traffic safety.Bituminous concrete pavement general design period is 15 years, and in fact, only about 10 years usual working life, that is, every 10 ~ 15 years, bituminous concrete pavement just needs to overhaul once.Safeguarding that the method for process was exactly to occurring that milling is carried out on the road surface of disease, then making again in the past, three large problems can be caused like this: one was stack occupied ground and cause environmental pollution; Two is waste a large amount of non-renewable petroleum resources, and a large amount of pitch again needed for making bituminous concrete pavement and building stones face huge resource pressure by making us; Three is destroy ecotope.Therefore, how disposing annual tens million of tons of bituminous concrete pavement waste materials must in the face of the problem with solution by becoming.Adopt Recycling Old Asphalt Mixture utilisation technology, recycling bituminous concrete pavement waste material is the effective way fundamentally solved the problem.If reclaim waste asphalt mixture; reheat; analyze by experiment and add appropriate pitch, regenerator on demand and gather materials and mix and stir; just again can be used for pavement structure as new asphalt; like this, both can save a large amount of starting material, thus save natural resources; preserve the ecological environment, the service requirements on road surface can be met again.
At present, the cold recycling technology of waste asphalt mixture mainly adopts emulsified bitumen or foam asphalt as agglutinate, waste and old compound regeneration will add a certain amount of cement when producing, and is removed the moisture in agglutinate, improve the intensity of regenerating mixture simultaneously by the hydration reaction of cement.Original pitch and the pitch newly added is useless gives full play to due effect, what really play an important role to compound intensity is cement.The technical indicator of this regenerating mixture does not reach the requirement of current specifications asphalt technical indicator, and its regenerating mixture belongs to stabilized with inorganic binder class material, can only be used for the basic unit of road.
There is following problem in existing useless bituminous mixture cold regeneration emulsified bitumen and foam asphalt: one is the building stones that only make use of in useless asphalt and more valuable pitch resource is not applied; Two is that emulsified bitumen and Foamed asphalt recycling mixture belong to inorganic binder, and pavement performance, not as asphalt, can only be used for the basic unit of road.Therefore emulsified bitumen and foam asphalt cold renewal technique just make use of mineral aggregate to waste asphalt mixture, and the higher pitch resource of value is not fully used, thorough not to the regeneration of waste asphalt mixture resource, also there is larger exploitation space.
The problems such as in addition, existing emulsified bitumen cold recycling technology also exists complex manufacturing, easy breakdown of emulsion, and construction workability is poor, and intensity rising is slow; It is short to there is the transformation period in foam asphalt regeneration techniques, the problem of construction workability difference, and this is all the technical barrier that those skilled in the art face in the cold recycling technology field of waste asphalt mixture.
Summary of the invention
In order to solve the technical problem existed in above-mentioned prior art, make full use of the pitch resource in waste asphalt mixture, the present invention researchs and develops useless Asphalt Mixture at Low Temperature regeneration techniques, under 60-80 DEG C of condition, (cold renewal (20-60 DEG C) is compared) by utilizing low-temp recovery bituminous cement, the pitch of waste asphalt mixture and mineral aggregate are regenerated comprehensively, and waste asphalt mixture all utilized adjust grating without the need to adding newly to gather materials, the recycle giving full play to waste asphalt mixture resource is worth, prepared reclaimed asphalt mixture construction workability is good, the mixing of low-temp recovery pitch continues all to have for 10 hours to roll performance.
Concrete, the present invention relates to following technical scheme:
1, a kind of low-temp recovery asphalt, it is low-temp recovery bituminous cement and waste asphalt mixture is that mixed raw material is standby, low-temp recovery bituminous cement weight percent is 2.0%-4.0%, described low-temp recovery bituminous cement, it is made up of the component of following weight part: 60-70 part petroleum pitch, 30-40 part aromatic hydrocarbon oil, 1-3 part thermoplastic elastomer, 0.3-0.5 part tensio-active agent.
Preferably, petroleum pitch is 70# or 90# high-quality pavement pitch.Through test, bituminous cement of the present invention, can only use petroleum pitch, and unavailable coal-tar pitch and rock asphalt replace.
Petroleum pitch in low-temp recovery bituminous cement preparation process as liquid phase medium environment, colloid needed for regenerator, fragrant part are provided, supplement fragrant part and the colloid of aged asphalt loss in useless asphalt, its consumption is not easily too much, too much impact has the regeneration quality of low-temp recovery agent, good media environment cannot be provided again very little, and affect adhesive property and the pavement performance of reclaimed asphalt mixture.
Preferably, aromatic hydrocarbon oil is the extraction oil in low solidifying naphthenic lube oil treating process, and preferred aromatic hydrocarbon oil condensation point is lower than-15 DEG C, and be rich in aromatic hydrocarbons, aromaticity content is greater than 70%, and 25 DEG C of viscosity are less than 50mm
2/ s, flash-point is greater than 180 DEG C; Preferred, aromatic hydrocarbon oil is the low solidifying extraction oil of normal two wires or atmosphere 3rd side cut.
Contriver finds, aromatic hydrocarbon oil is the infiltration regenerator of low-temp recovery bituminous cement, also be the key ingredient that aged asphalt supplements, have infiltration regenerative power to aged asphalt, its consumption is more, the regeneration effect of regenerator is better, the low-temperature performance of the reclaimed asphalt mixture obtained is better, but consumption is too much, can affect adhesion property, the adhesion strength of regeneration binding agent, cause the strength degradation of reclaimed asphalt mixture, high-temperature behavior is poor.
Preferably, thermoplastic elastomer is styrene series thermoplastic elastomer, comprises SBS, SBR etc., preferred, and thermoplastic elastomer is star-shaped sbs 4303 or linear SBS501 etc.
Thermoplastic elastomer is the tackifier of low-temp recovery bituminous cement, can improve the cohesive strength of regeneration asphalt binding agent, improves cleavage strength and the anti-water damage property of reclaimed asphalt mixture, and improves the high-temperature behavior of reclaimed asphalt mixture.
Preferably, tensio-active agent is nonionogenic tenside or cats product, is preferably this dish S-60, S-80, tween, or the mixture of span and tween.
Tensio-active agent Main Function is the stability improving regenerator, prevent regenerator precipitated and separated, and the adhesive property that can strengthen under regeneration asphalt binding agent and useless asphalt damping interface, contriver finds, because low-temp recovery temperature is at 60-80 DEG C, useless asphalt moisture can not all evaporate, so moist cohesiveness will be considered, dosage of surfactant very little time, can not play damping interface bonding, or cohesive strength is inadequate, can affect the high-temperature behavior of regenerating mixture too much.
Can flow under low-temp recovery bituminous cement normal temperature (25 DEG C) of the present invention, under design temperature (60-80 DEG C), to aged asphalt, there is infiltration and softening power, recover the viscoelastic property of aged asphalt.According to a certain percentage low-temp recovery bituminous cement and useless asphalt are uniformly mixed, make the cohesive strength of low-temp recovery asphalt, volume refers to and the pavement performance index of waste asphalt mixture reaches the technical requirements of new asphalt.
2, a preparation method for low-temp recovery asphalt, comprises the steps:
(1) by the useless asphalt that sieved by after the compounding conjunction of design level, be heated to 60-80 DEG C and insert and mix and stir in pot;
(2) a certain amount of low-temp recovery bituminous cement is taken according to bitumen aggregate ratio;
(3) produce: remain on 60-90 DEG C mixing and stirring in pot useless asphalt temperature, stirs and within 90 seconds, make the useless asphalt of different screening mix, then add low-temp recovery bituminous cement continuation stirring 90 seconds, obtain low-temp recovery asphalt; Or mix on station or hot recycling equipment in heat, useless asphalt, under 60-90 DEG C of condition, first mixes and stirs 10 seconds, then sprays into low-temp recovery bituminous cement, mix and stir and can produce low-temp recovery asphalt in 20 seconds.
Preferably, bitumen aggregate ratio is 2.0%-4.0%, and low-temp recovery bituminous cement volume is larger, and recycling asphalt mixtures performance is better, and performance is close to new asphalt, and volume is too large, and namely bitumen aggregate ratio is excessive, reclaimed asphalt mixture bellding, also causes waste simultaneously; And volume is too little, aged asphalt performance recovery degree does not reach, low-temp recovery asphalt insufficient strength, and asphalt is fugitive, and the pavement performance of reclaimed asphalt mixture can not meet code requirement.
Preferably, further preparation-obtained low-temp recovery asphalt is detected: adopt Mashell molding method shaping, mold temperature is at 60-80 DEG C, 80 DEG C of healths 24 hours, detect regenerating mixture technical indicator by " standard specification for construction and acceptance of highway asphalt pavement " F40-2004 technical requirements.
The present invention has following beneficial effect:
(1) reclaimed asphalt mixture of the present invention adopts low-temp recovery bituminous cement to be prepared, to compare other cold renewal agglutinate (emulsified bitumen, foam asphalt), low-temp recovery bituminous cement has not stratified, not breakdown of emulsion, does not emanate, not conglomeration, normal temperature (25 DEG C) good fluidity, easily carries, can long storage periods; Have that production unit is simple and easy, production technique is simple, transport and the advantage such as easy to use; Low-temp recovery bituminous cement consumption is less, makes low-temp recovery asphalt cost lower than emulsified bitumen regenerating mixture; Low-temp recovery bituminous cement is rich in fragrance point, has good infiltration dissolving power to aged asphalt, and supplements the colloid of waste asphalt mixture loss and fragrant part, makes aged asphalt recover viscoelastic property; Low-temp recovery bituminous cement can make the building stones of waste asphalt mixture and aged asphalt all obtain comprehensive regeneration, without the need to adding adjustment grating of newly gathering materials, just can produce reclaimed asphalt mixture, and regeneration temperature is low, energy-conserving and environment-protective.
(2) low-temp recovery bituminous mixture is simple, construction workability good, utilizes existing hot batching plant or hot recycling equipment to produce, and the mixing of low-temp recovery pitch continues all to have for 10 hours to roll performance.
(3) low-temp recovery performance of asphalt mixture is superior, and can be used for the basic unit of road, bottom surface layer or middle surface layer, Recycling Old Asphalt Mixture utility value is higher, farthest realizes the resource circulation utilization of waste asphalt mixture.
This invention exploits the low-temp recovery asphalt utilizing low-temp recovery bituminous cement manufacture, one is to make waste asphalt mixture regenerate comprehensively, not only utilizes building stones resource, and farthest utilizes original aged asphalt resource; Two is performances that low-temp recovery asphalt has new asphalt, can be used for the basic unit of road, bottom surface layer, plays the maximum value of waste asphalt mixture recycle; What is more important, low-temp recovery bitumen technology is owing to make use of the pitch resource in waste asphalt mixture, and low-temp recovery bituminous cement consumption is less, makes low-temp recovery asphalt cost lower than emulsified bitumen regenerating mixture.Therefore, be no matter the comprehensive utilization of resource, the performance of compound, construction workability or regeneration cost, low-temp recovery technique of the present invention all has obvious advantage.
Embodiment
Embodiment 1
1, low-temp recovery bituminous cement preparation flow: use equipment for production of emulsified bitumen unit (or there is the equipment of Forced Mixing performance) produce, in asphalt tank first by 70# asphalt heating to 130-140 DEG C, exported with 60 parts of flow proportionals by under meter.In solvesso tank, add 1 part of SBS modifier, 0.3 part of tensio-active agent successively, abundant stirring 10 minutes, exported with 40 parts of flow proportionals by under meter, by colloidal mill (or Forced Mixing equipment) and pitch ground and mixed, through cooling apparatus, mixture is cooled to less than 90 DEG C again, namely obtain low-temp recovery bituminous cement, technical indicator is in Table-1.
Table-1 low-temp recovery bituminous cement technical indicator
From table 1, this regenerator kinematic viscosity 25 DEG C time is 2200mm
2/ s, has good mobility, and all indexs all meet technical requirements.
2, prepare low-temp recovery asphalt with above-mentioned low-temp recovery bituminous cement, its weight part consists of 2.0 parts of regeneration asphalt binding agents, and all the other to give up asphalt for RAP.
Old material RAP need sieve as more than at least two grades for subsequent use, and the particle exceeding design maximum particle diameter should sieve utilization again after fragmentation.Disintegrating apparatus need meet the agglutinate bonding opened between mineral aggregate particle, but avoids the requirement of the fragmentation of mineral aggregate as far as possible.When screening is two grades, advise demarcating with 9.5mm.When screening is 3 grades, advise demarcating with 4.75mm and 9.5mm.Useless asphalt RAP detection sees for oneself table-2
Table-2RAP test item and specification of quality
3, in accordance with China's " standard specification for construction and acceptance of highway asphalt pavement " F40-2004, with the low-temp recovery bituminous cement of above-mentioned preparation for agglutinate, waste asphalt mixture sieve is divided into three gears: 0 ~ 5mm accounts for 22%, and 5 ~ 10mm accounts for 33%, and 10 ~ 20mm accounts for 45%.With continuous dense bitumen compound AC-20 for asphalt type, the gradation composition of the marshall' mechanic characteristic value designing asphalt mixture that code requirement F40-2004 requires, the technological property of low-temp recovery asphalt is in Table-3.
Table-3 low-temp recovery pitch mixing AC-20 expects technical indicator
As can be seen from table-3, all technical indicators of low-temp recovery asphalt all meet " standard specification for construction and acceptance of highway asphalt pavement " F40-2004 technical requirements, complete road worthy basic unit and bottom surface layer.
Embodiment 2
1, low-temp recovery bituminous cement preparation flow: use equipment for production of emulsified bitumen unit (or there is the equipment of Forced Mixing performance) produce, in asphalt tank first by 70# asphalt heating to 130-140 DEG C, exported with 65 parts of flow proportionals by under meter.In solvesso tank, add 2 parts of SBS modifier, 0.4 part of tensio-active agent successively, abundant stirring 10 minutes, exported with 35 parts of flow proportionals by under meter, by colloidal mill (or Forced Mixing equipment) and pitch ground and mixed, through cooling apparatus, mixture is cooled to less than 90 DEG C again, namely obtain low-temp recovery bituminous cement, technical indicator is in Table-4.
Table-4 low-temp recovery bituminous cement technical indicators
From table-4, this regenerator kinematic viscosity 25 DEG C time is 2785mm
2/ s, has good mobility, and all indexs all meet technical requirements.
2, prepare low-temp recovery asphalt with above-mentioned low-temp recovery bituminous cement, its weight part consists of 3.0 parts of regeneration asphalt binding agents, and all the other to give up asphalt for RAP, by third gear classification: 0 ~ 5mm accounts for 22%, 5 ~ 10mm accounts for 33%, and 10 ~ 20mm accounts for 45%, and technical indicator is in Table-5.
Table-5 low-temp recovery pitch mixing AC-20 expects technical indicator
As can be seen from table-5, pitch and SBS dosage larger, low-temp recovery asphalt technical indicator is better, and all technical indicators of low-temp recovery asphalt all meet " standard specification for construction and acceptance of highway asphalt pavement " F40-2004 technical requirements, complete road worthy basic unit and bottom surface layer.
Embodiment 3
1, low-temp recovery bituminous cement preparation flow: use equipment for production of emulsified bitumen unit (or there is the equipment of Forced Mixing performance) produce, in asphalt tank first by 70# asphalt heating to 130-140 DEG C, exported with 70 parts of flow proportionals by under meter.In solvesso tank, add 3 parts of SBS modifier, 0.5 part of tensio-active agent successively, abundant stirring 10 minutes, exported with 30 parts of flow proportionals by under meter, by colloidal mill (or Forced Mixing equipment) and pitch ground and mixed, through cooling apparatus, mixture is cooled to less than 90 DEG C again, namely obtain low-temp recovery bituminous cement, technical indicator is in Table-6.
Table-6 low-temp recovery bituminous cement technical indicators
From table-6, this regenerator kinematic viscosity 25 DEG C time is 3650mm
2/ s, has good mobility, and all indexs all meet technical requirements.
2, low-temp recovery asphalt is prepared with above-mentioned low-temp recovery bituminous cement, its weight part consists of 4.0 parts of regeneration asphalt binding agents, and all the other give up asphalt by third gear classification for RAP: 0 ~ 5mm accounts for 22%, and 5 ~ 10mm accounts for 33%, 10 ~ 20mm accounts for 45%, and technical indicator is in Table-7.
Table-7 low-temp recovery pitch mixing AC-20 expects technical indicator
As can be seen from table-7, pitch and SBS dosage larger, low-temp recovery asphalt technical indicator is better, and all technical indicators of low-temp recovery asphalt all meet " standard specification for construction and acceptance of highway asphalt pavement " F40-2004 technical requirements, complete road worthy basic unit and bottom surface layer.
Claims (10)
1. a low-temp recovery asphalt, it is low-temp recovery bituminous cement and waste asphalt mixture is that mixed raw material is standby, it is characterized in that, weight percent shared by low-temp recovery bituminous cement is 2.0%-4.0%, described low-temp recovery bituminous cement its be made up of the component of following weight part: 60-70 part petroleum pitch, 30-40 part aromatic hydrocarbon oil, 1-3 part thermoplastic elastomer, 0.3-0.5 part tensio-active agent.
2. low-temp recovery asphalt according to claim 1, is characterized in that, petroleum pitch is 70# or 90# high-quality pavement pitch.
3. low-temp recovery asphalt according to claim 1, is characterized in that, aromatic hydrocarbon oil is the extraction oil in low solidifying naphthenic lube oil treating process, and the condensation point of described aromatic hydrocarbon oil is lower than-15 DEG C, and aromaticity content is greater than 70%, and 25 DEG C of viscosity are less than 50mm
2/ s, flash-point is greater than 180 DEG C.
4. low-temp recovery asphalt according to claim 3, is characterized in that, aromatic hydrocarbon oil is the low solidifying extraction oil of normal two wires or atmosphere 3rd side cut.
5. low-temp recovery asphalt according to claim 1, is characterized in that, thermoplastic elastomer is styrene series thermoplastic elastomer.
6. low-temp recovery asphalt according to claim 5, is characterized in that, thermoplastic elastomer is SBS or SBR, and preferably, thermoplastic elastomer is star-shaped sbs 4303 or linear SBS501.
7. low-temp recovery asphalt according to claim 1, is characterized in that, tensio-active agent is cats product or nonionogenic tenside.
8. low-temp recovery asphalt according to claim 7, is characterized in that, tensio-active agent is this dish S-60, S-80, tween, or the mixture of span and tween.
9. the preparation method of the low-temp recovery asphalt described in any one of claim 1-8, comprises the steps:
(1) by the useless asphalt that sieved by after the compounding conjunction of design level, be heated to 60-80 DEG C and insert and mix and stir in pot;
(2) a certain amount of low-temp recovery bituminous cement is taken according to bitumen aggregate ratio 2.0%-4.0%;
(3) produce: remain on 60-90 DEG C mixing and stirring in pot useless asphalt temperature, stirs and within 90 seconds, make the useless asphalt of different screening mix, then add low-temp recovery bituminous cement continuation stirring 90 seconds, obtain low-temp recovery asphalt; Or
Mix on station or hot recycling equipment in heat, useless asphalt, under 60-90 DEG C of condition, first mixes and stirs 10 seconds, then sprays into low-temp recovery bituminous cement, mix and stir and can produce low-temp recovery asphalt in 20 seconds.
10. method according to claim 9, it is characterized in that, preparation-obtained low-temp recovery asphalt is detected: adopt Mashell molding method shaping, mold temperature is at 60-80 DEG C, 80 DEG C of healths 24 hours, detect regenerating mixture technical indicator by " standard specification for construction and acceptance of highway asphalt pavement " F40-2004 technical requirements.
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| CN105693143A (en) * | 2016-02-04 | 2016-06-22 | 武汉成世通环保沥青工程有限公司 | Method for preparing urban road maintenance material with high-solid-content modified medium-temperature pitch |
| CN106007491A (en) * | 2016-06-23 | 2016-10-12 | 四川国星高分子树脂有限公司 | Normal temperature recycled asphalt mixture and preparation method thereof |
| CN108485523A (en) * | 2018-03-12 | 2018-09-04 | 中交第公路勘察设计研究院有限公司 | Bituminous paving microwave is rapidly heated accelerating agent and preparation method thereof and application method |
| CN109232974A (en) * | 2018-08-15 | 2019-01-18 | 合肥孚成活性材料技术开发有限公司 | A kind of bituminous pavement reclaimed materials normal-temperature regeneration agent |
| CN110194612A (en) * | 2019-03-26 | 2019-09-03 | 东南大学 | A kind of Recycled Asphalt Pavement material and its design method ensureing cryogenic property |
| RU2730942C2 (en) * | 2016-08-02 | 2020-08-26 | Хансу Натек Ко., Лтд | Modified non-volatile binder for cold asphalt and an asphalt mixture regenerated using said binder |
| CN112142369A (en) * | 2020-08-27 | 2020-12-29 | 江苏现代路桥有限责任公司 | Production process of recycled asphalt mixture |
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| RU2730942C2 (en) * | 2016-08-02 | 2020-08-26 | Хансу Натек Ко., Лтд | Modified non-volatile binder for cold asphalt and an asphalt mixture regenerated using said binder |
| CN108485523A (en) * | 2018-03-12 | 2018-09-04 | 中交第公路勘察设计研究院有限公司 | Bituminous paving microwave is rapidly heated accelerating agent and preparation method thereof and application method |
| CN108485523B (en) * | 2018-03-12 | 2020-05-19 | 中交第一公路勘察设计研究院有限公司 | Microwave rapid heating promoter for asphalt pavement and preparation method and use method thereof |
| CN109232974A (en) * | 2018-08-15 | 2019-01-18 | 合肥孚成活性材料技术开发有限公司 | A kind of bituminous pavement reclaimed materials normal-temperature regeneration agent |
| CN109232974B (en) * | 2018-08-15 | 2021-08-17 | 合肥孚成活性材料技术开发有限公司 | Normal-temperature regenerant for recycled asphalt pavement materials |
| CN110194612A (en) * | 2019-03-26 | 2019-09-03 | 东南大学 | A kind of Recycled Asphalt Pavement material and its design method ensureing cryogenic property |
| CN110194612B (en) * | 2019-03-26 | 2021-11-30 | 东南大学 | Recycled asphalt concrete material capable of guaranteeing low-temperature performance and design method thereof |
| CN112142369A (en) * | 2020-08-27 | 2020-12-29 | 江苏现代路桥有限责任公司 | Production process of recycled asphalt mixture |
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Effective date of registration: 20231025 Address after: No. 91-1, Nongyi Operation Area, Dananban Farm, Dananban Town, Zhangpu County, Zhangzhou City, Fujian Province, 363200 Patentee after: Lufeng Shangke (Fujian) New Materials Co.,Ltd. Address before: Room 602, Unit 3, Building 5, Yiheyuan, Jianda Garden Community, Fengqi Road, Licheng District, Jinan City, Shandong Province, 250101 Patentee before: Wang Lizhi |