CN103122116A - High-density MAA/MAN (methacrylic acid/methacrylonitrile) copolymer foam plastic and preparation method thereof - Google Patents
High-density MAA/MAN (methacrylic acid/methacrylonitrile) copolymer foam plastic and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a high-density MAA/MAN (methacrylic acid/methacrylonitrile) copolymer foam plastic and a preparation method thereof. The invention is used for solving the technical problem of low density in the existing MAA/MAN copolymer foam plastic. The technical scheme is as follows: the preparation method comprises the following steps: injecting monomer MAA, monomer MAN, initiator, crosslinking agent, foaming agent, nucleating agent, density control agent and molecular weight regulator mixed solution into a closed die; carrying out thermostatic reaction in a strong circulating water bath to carry out polymerization to form a transparent or semitransparent foamable MAA/MAN copolymer sheet; pretreating the MAA/MAN copolymer sheet in strong-loop hot air; foaming the pretreated unfoamed MAA/MAN copolymer sheet in strong-loop hot air to obtain an MAA/MAN copolymer foam plastic sheet; and carrying out after-treatment on the MAA/MAN copolymer foam plastic sheet in strong loop hot air to obtain the high-density MAA/MAN copolymer foam plastic. Due to the addition of the density control agent N,N-methylene-bis acrylamide, the density of the prepared MAA/MAN copolymer foam plastic is enhanced to 200-450 Kg/m<3> from 110-150 Kg/m<3> in the background art, and the prepared MAA/MAN copolymer foam plastic has low dielectric property.
Description
Technical field
The present invention relates to a kind of MAA/MAN copolymer foam plastic, particularly a kind of high-density MAA/MAN copolymer foam plastic; The preparation method who also relates to this high-density MAA/MAN copolymer foam plastic.
Background technology
The performance of rigid foam and its density relationship are close, and generally speaking, the mechanical properties such as compressive strength and modulus, shearing resistance and modulus, tensile strength and modulus, flexural strength and modulus increase with density.And in rigid foam, the most excellent with mechanical property, resistance toheat, the creep-resistant property of Polymethacrylimide (PMI) porous plastics.The density of present commercial PMI porous plastics is mostly at 110Kg/m
3Below, its structure and performance are known by people.But need the density of PMI porous plastics to surpass 150Kg/m in some field
3Above, its performance is also had higher requirement.
Document 1 " patent No. is the Chinese patent of ZL200610091394.1 " discloses a kind of MAA/AN copolymer foam plastic and preparation method thereof, and the recipe ingredient of this MAA/AN copolymer foam plastic presses row weight part ratio polyreaction and foaming forms:
The density of the MAN/AN blend foam plastics of preparing according to " patent No. is the Chinese patent of ZL200610091394.1 " disclosed preparation method is at 52 ± 3Kg/m
3The time, its average compressive strength is that 0.8MPa, average modulus of compression are that 32MPa, average shear intensity are that 0.8MPa, average shear modulus are 27MPa; When density is 75 ± 3Kg/m
3The time, its average compressive strength is that 1.7MPa, average modulus of compression are that 56MPa, average shear intensity are that 1.3MPa, average shear modulus are 45MPa.Such performance condition is enough to satisfy common service requirements, but at some special occasions, its performance is still slightly inadequate.
Document 2 " patent No. is 5928459 United States Patent (USP) " discloses a kind of preparation method take methacrylic acid and methyl propionitrile as the PMI porous plastics of monomer, this invention is take the methacrylic acid of the methacrylonitrile of 40-60wt% and 60-40wt% as principal monomer, the 3rd monomer that adds 0-20wt%, the mixed foaming agent that adds the unitary fatty alcohol of the methane amide of 0.5-8wt% and 3-8 carbon atom to form, the unsaturated ethylene based mixtures that adds 0.005-5wt% is linking agent, aggregates into multipolymer under the effect of at least a initiator.Then foam in 200-260 ℃ of temperature range, 100-130 ℃ of lower thermal treatment 2-6h, then at 180-220 ℃ of lower thermal treatment 32-64h.Finally prepare and to stand 200 ℃, the PMI porous plastics of 0.2-0.7MPa condition moulding sandwich structure composite material.
Document 3 " patent No. is the Chinese patent of CN1903899 " discloses a kind of MAA/AN copolymer foam plastic and preparation method thereof, use methacrylic acid, vinyl cyanide, Diisopropyl azodicarboxylate, linking agent, urea etc., the water-bath pre-polymerization, 180-200 ℃ of free foaming, carry out aftertreatment in 140-180 ℃ of warm air, preparation PMI porous plastics, but the porous plastics of preparing so easy flavescence after being heated becomes fragile.
Summary of the invention
In order to overcome the existing poor deficiency of FPGA forecast Control Algorithm real-time, the invention provides a kind of high-density MAA/MAN copolymer foam plastic.This high-density MAA/MAN copolymer foam plastic is formed by monomer methacrylic acid, monomer methacrylonitrile, initiator, linking agent, whipping agent, nucleator, density-controlling agent and molecular weight regulator polyreaction and foaming.
The present invention also provides the above-specified high density MAA/MAN preparation method of copolymer foam plastic.The preparation method injects formula mixed solution in close die, isothermal reaction in the strong cyclic water-bath, polymerization forms transparent or semitransparent foamed MAA/MAN copolymerization sheet, MAA/MAN copolymerization sheet carries out pre-treatment in strong recirculated hot air, foam in strong recirculated hot air through the pretreated MAA/MAN of foaming copolymerization sheet, obtain MAA/MAN copolymer foam plastic plate and carry out aftertreatment in strong recirculated hot air, prepare high-density MAA/MAN copolymer foam plastic.Owing to adding the density-controlling agent N,N methylene bis acrylamide, can prepare high-density MAA/MAN copolymer foam plastic, make this high-density MAA/MAN copolymer foam plastic also have low dielectric characteristics.
The technical solution adopted for the present invention to solve the technical problems: a kind of high-density MAA/MAN copolymer foam plastic is characterized in forming in following ratio weight part component polyreaction and foaming:
A kind of preparation method of above-specified high density MAA/MAN copolymer foam plastic is characterized in comprising the following steps:
Step 1, in following ratio weight part component batching, evenly mix, form stock liquid;
Step 2, stock liquid is poured in the mould of being made by two dull and stereotyped unorganic glasses and natural rubber or EPT rubber packing circle, the distance between glass is between 15～30mm, and the glass mold outside is by clamp;
Step 3, have the glass mold of stock liquid to put into strong circulator bath device filling to carry out polymerization, form foamable multipolymer sheet, polymerizing condition: 40～60 ℃ of water temperatures, time 48～72h;
Step 4, the foamed MAA/MAN copolymerization sheet that step 3 is obtained carry out pre-treatment in the strong recirculated hot air of 100～150 ℃, pretreatment time is 0.5～2h, foam in 180～220 ℃ of strong recirculated hot airs through the pretreated MAA/MAN of foaming multipolymer sheet, foamed time is 30～40min, the plastic foamboard that obtains carries out aftertreatment 2～8h in 150～170 ℃ of strong recirculated hot airs, obtain high-density MAA/MAN copolymer foam plastic.
Described initiator is any of Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile) or 2,2'-Azobis(2,4-dimethylvaleronitrile).
Described linking agent is any of acrylamide or Methacrylamide.
Described whipping agent is the composite foamable agent that methane amide and monohydroxy-alcohol form.
Described monohydroxy-alcohol is any of propyl alcohol, butanols, amylalcohol or hexanol.
Described nucleator is any of urea or dimethyl urea.
Described density-controlling agent is N,N methylene bis acrylamide or N, any of N-two amido ditane type bismaleimidess.
Described molecular weight regulator is any of n-dodecyl mercaptan or quadrol.
the invention has the beneficial effects as follows: because the preparation method of high-density MAA/MAN copolymer foam plastic is with the monomer methacrylic acid, the monomer methacrylonitrile, initiator, linking agent, whipping agent, nucleator, density-controlling agent and molecular weight regulator mixed solution inject in close die, isothermal reaction in the strong cyclic water-bath, polymerization forms transparent or semitransparent foamed MAA/MAN copolymerization sheet, MAA/MAN copolymerization sheet carries out pre-treatment in strong recirculated hot air, foam in strong recirculated hot air through the pretreated MAA/MAN of foaming copolymerization sheet, obtain MAA/MAN copolymer foam plastic plate and carry out aftertreatment in strong recirculated hot air, prepare high-density MAA/MAN copolymer foam plastic.Owing to adding the density-controlling agent N,N methylene bis acrylamide, the density of the MAA/MAN copolymer foam plastic of preparing is by 110～150Kg/m of background technology
3Bring up to 200～450Kg/m
3, and have low dielectric characteristics.
Below in conjunction with drawings and Examples, the present invention is elaborated.
Description of drawings
Fig. 1 is the preparation method's of high-density MAA/MAN copolymer foam plastic of the present invention schema.
Embodiment
Describe the present invention in detail with reference to Fig. 1.
A kind of high-density MAA/MAN copolymer foam plastic provided by the invention, by following component by weight hybrid reaction obtain:
Monomer: methacrylic acid (MAA), its weight ratio part is 42～52;
Monomer: methacrylonitrile (MAN), its weight ratio part is 58～48;
Initiator: adopt Diisopropyl azodicarboxylate (AIBN), 2,2'-Azobis(2,4-dimethylvaleronitrile) (ABVN) or 2,2'-Azobis(2,4-dimethylvaleronitrile) (AMBN), its weight ratio part is 0.04～2.0;
Linking agent: adopt acrylamide (AM), Methacrylamide (MAM), its weight ratio part is 1.0～4.0;
Whipping agent: adopt the composite foamable agent of methane amide, monohydroxy-alcohol or both compositions, the unary alcohol whipping agent comprises propyl alcohol, butanols, amylalcohol or hexanol, and weight ratio part of whipping agent is 0.1～8.0;
Nucleator: adopt urea, dimethyl urea, its weight ratio part is 0.3～1.5;
Density-controlling agent: adopt N,N methylene bis acrylamide (MBA), N, N-two amido ditane type bismaleimidess (BMI), its weight ratio part is 0.01～0.5;
Molecular weight regulator: adopt n-dodecyl mercaptan, quadrol, its weight ratio part is 0.01～0.1.
Embodiment 1: recipe ingredient is pressed the row weight part ratio and is formed: 42 parts of methacrylic acids, 58 parts of methacrylonitriles, 0.6 part of Diisopropyl azodicarboxylate, 1.0 parts of acrylamides, 4.0 parts of methane amides, 1.0 parts of urea, 0.02 part of N,N methylene bis acrylamide, 0.1 part of n-dodecyl mercaptan.According to recipe ingredient configuration stock liquid, stock liquid is poured in the mould of being made by two dull and stereotyped unorganic glasses and rubber seal, the distance between glass is 20mm, the glass mold outside is by clamp; There is the glass mold of stock liquid to put into strong circulator bath device filling and carries out polymerization, polymerizing condition: 48 ℃ of water temperatures, reaction 48～72h.The foamed MAA/MAN multipolymer sheet (as baking oven, drying tunnel etc.) in the strong recirculated hot air of 120 ℃ that the upper step was obtained carries out pre-treatment, pretreatment time is 1h, foam through the pretreated MAA/MAN of foaming multipolymer sheet (as baking oven, drying tunnel etc.) in 210 ℃ of strong recirculated hot airs, foamed time is 30～40min, the plastic foamboard that obtains (as baking oven, drying tunnel etc.) in 160 ℃ of strong recirculated hot airs carries out aftertreatment 2h, prepare the cystose that thickness is 30～40mm, the density of cystose is 150～200kg/m
3
Embodiment 2: recipe ingredient is pressed the row weight part ratio and is formed: 42 parts of methacrylic acids, 58 parts of methacrylonitriles, 0.7 part of Diisopropyl azodicarboxylate, 2.0 parts of acrylamides, 4.0 parts of methane amides, 1.0 parts of urea, 0.05 part of N,N methylene bis acrylamide, 0.1 part of n-dodecyl mercaptan.According to recipe ingredient configuration stock liquid, stock liquid is poured in the mould of being made by two dull and stereotyped unorganic glasses and rubber seal, the distance between two dull and stereotyped unorganic glasses is 20mm.Polymerizing condition is in this case: 46 ℃ of water temperatures, reaction 48～72h.The foamed MAA/MAN multipolymer sheet (as baking oven, drying tunnel etc.) in the strong recirculated hot air of 140 ℃ that the upper step was obtained carries out pre-treatment, pretreatment time is 1h, foam through the pretreated MAA/MAN of foaming multipolymer sheet (as baking oven, drying tunnel etc.) in 210 ℃ of strong recirculated hot airs, foamed time is 30～40min, the plastic foamboard that obtains (as baking oven, drying tunnel etc.) in 160 ℃ of strong recirculated hot airs carries out aftertreatment 3h, the thickness of the cystose that makes is 30～40mm, and density is 150～250kg/m
3
Embodiment 3: recipe ingredient is pressed the row weight part ratio and is formed: 42 parts of methacrylic acids, 58 parts of methacrylonitriles, 0.6 part of Diisopropyl azodicarboxylate, 2.5 parts of acrylamides, 3.0 parts of methane amides, 1.0 parts of urea, 0.1 part of N,N methylene bis acrylamide, 0.1 part of n-dodecyl mercaptan.According to recipe ingredient configuration stock liquid, stock liquid is poured in the mould of being made by two dull and stereotyped unorganic glasses and rubber seal, the distance between glass is 20mm, the glass mold outside is by clamp; Have the glass mold of stock liquid to put into strong circulator bath device filling and carry out the multipolymer sheet that polymerization forms hard, clear, polymerizing condition: 49 ℃ of water temperatures, the time is 48～72h.The foamed MAA/MAN multipolymer sheet (as baking oven, drying tunnel etc.) in the strong recirculated hot air of 140 ℃ that the upper step was obtained carries out pre-treatment, pretreatment time is 1h, foam through the pretreated MAA/MAN of foaming multipolymer sheet (as baking oven, drying tunnel etc.) in 200 ℃ of strong recirculated hot airs, foamed time is 30～40min, the plastic foamboard that obtains (as baking oven, drying tunnel etc.) in 160 ℃ of strong recirculated hot airs carries out aftertreatment 4h, prepare the cystose that thickness is 25～35mm, the density of cystose is 200～300kg/m
3
Embodiment 4: recipe ingredient is pressed the row weight part ratio and is formed: 42 parts of methacrylic acids, 58 parts of methacrylonitriles, 0.6 part of Diisopropyl azodicarboxylate, 3.5 parts of acrylamides, 1.0 parts of methane amides, 0.5 part of urea, 0.2 part of N,N methylene bis acrylamide, 0.1 part of n-dodecyl mercaptan.According to recipe ingredient configuration stock liquid, stock liquid is poured in the mould of being made by two dull and stereotyped unorganic glasses and rubber seal, the distance between glass is 20mm, the glass mold outside is by clamp; There is the glass mold of stock liquid to put into strong circulator bath device filling and carries out the multipolymer sheet that polymerization forms hard, clear, polymerizing condition: 48 ℃ of water temperatures, reaction 48～72h.The foamed MAA/MAN multipolymer sheet (as baking oven, drying tunnel etc.) in the strong recirculated hot air of 140 ℃ that the upper step was obtained carries out pre-treatment, pretreatment time is 1h, foam through the pretreated MAA/MAN of foaming multipolymer sheet (as baking oven, drying tunnel etc.) in 200 ℃ of strong recirculated hot airs, foamed time is 30～40min, the plastic foamboard that obtains (as baking oven, drying tunnel etc.) in 160 ℃ of strong recirculated hot airs carries out aftertreatment 5h, prepare the cystose that thickness is 25～30mm, the density of cystose is 250～350kg/m
3
Embodiment 5: recipe ingredient is pressed the row weight part ratio and is formed: 42 parts of methacrylic acids, 58 parts of methacrylonitriles, 0.5 part of Diisopropyl azodicarboxylate, 4.0 parts of acrylamides, 1.0 parts of methane amides, 0.5 part of urea, 0.3 part of N,N methylene bis acrylamide, 0.1 part of n-dodecyl mercaptan.According to recipe ingredient configuration stock liquid, stock liquid is poured in the mould of being made by two dull and stereotyped unorganic glasses and rubber seal, the distance between glass is 20mm, the glass mold outside is by clamp; There is the glass mold of stock liquid to put into strong circulator bath device filling and carries out the multipolymer sheet that polymerization forms hard, clear, polymerizing condition: 49 ℃ of water temperatures, reaction 48～72h.The foamed MAA/MAN multipolymer sheet (as baking oven, drying tunnel etc.) in the strong recirculated hot air of 140 ℃ that the upper step was obtained carries out pre-treatment, pretreatment time is 1h, foam through the pretreated MAA/MAN of foaming multipolymer sheet (as baking oven, drying tunnel etc.) in 195 ℃ of strong recirculated hot airs, foamed time is 30～40min, the plastic foamboard that obtains (as baking oven, drying tunnel etc.) in 160 ℃ of strong recirculated hot airs carries out aftertreatment 5h, prepare the cystose that thickness is 25～30mm, the density of cystose is 300～450kg/m
3
The Main Mechanical of high-density MAA/MAN copolymer foam plastic is as shown in table 1, and the high-frequency dielectric performance of its 10GHz is as shown in table 2.
The salient features of table 1 high-density MAA/MAN copolymer foam plastic
The high-frequency dielectric performance of table 2 high-density MAA/MAN copolymer foam plastic 10GHz
Claims (9)
1. high-density MAA/MAN copolymer foam plastic is characterized in that forming in following ratio weight part component polyreaction and foaming:
2. high-density MAA/MAN copolymer foam plastic according to claim 1, it is characterized in that: described initiator is any of Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile) or 2,2'-Azobis(2,4-dimethylvaleronitrile).
3. high-density MAA/MAN copolymer foam plastic according to claim 1, it is characterized in that: described linking agent is any of acrylamide or Methacrylamide.
4. high-density MAA/MAN copolymer foam plastic according to claim 1 is characterized in that: described whipping agent is the composite foamable agent that methane amide and monohydroxy-alcohol form.
5. high-density MAA/MAN copolymer foam plastic according to claim 4, it is characterized in that: described monohydroxy-alcohol is any of propyl alcohol, butanols, amylalcohol or hexanol.
6. high-density MAA/MAN copolymer foam plastic according to claim 1, it is characterized in that: described nucleator is any of urea or dimethyl urea.
7. high-density MAA/MAN copolymer foam plastic according to claim 1, it is characterized in that: described density-controlling agent is N,N methylene bis acrylamide or N, any of N-two amido ditane type bismaleimidess.
8. high-density MAA/MAN copolymer foam plastic according to claim 1, it is characterized in that: described molecular weight regulator is any of n-dodecyl mercaptan or quadrol.
9. high-density MAA/MAN copolymer foam plastic claimed in claim 1 is characterized in that comprising the following steps:
Step 1, in following ratio weight part component batching, evenly mix, form stock liquid;
Step 2, stock liquid is poured in the mould of being made by two dull and stereotyped unorganic glasses and natural rubber or EPT rubber packing circle, the distance between glass is between 15～30mm, and the glass mold outside is by clamp;
Step 3, have the glass mold of stock liquid to put into strong circulator bath device filling to carry out polymerization, form foamable multipolymer sheet, polymerizing condition: 40～60 ℃ of water temperatures, time 48～72h;
Step 4, the foamed MAA/MAN copolymerization sheet that step 3 is obtained carry out pre-treatment in the strong recirculated hot air of 100～150 ℃, pretreatment time is 0.5～2h, foam in 180～220 ℃ of strong recirculated hot airs through the pretreated MAA/MAN of foaming multipolymer sheet, foamed time is 30～40min, the plastic foamboard that obtains carries out aftertreatment 2～8h in 150～170 ℃ of strong recirculated hot airs, obtain high-density MAA/MAN copolymer foam plastic.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524662A (en) * | 2013-10-23 | 2014-01-22 | 江苏兆鋆新材料科技有限公司 | Preparation method of microporous AN/MAA (acrylic nitrile/methacrylic acid) copolymer foam |
| CN103524661A (en) * | 2013-10-23 | 2014-01-22 | 江苏兆鋆新材料科技有限公司 | Preparation method of nano silica modified polymethacrylimide foam |
| CN103554354A (en) * | 2013-10-23 | 2014-02-05 | 江苏兆鋆新材料科技有限公司 | Method for preparing high-density polymethacrylimide foam material |
| CN104849176A (en) * | 2015-04-16 | 2015-08-19 | 中国石油大学(北京) | Flaky body glue preparation device and microsphere viscoelasticity measuring method based on body glue |
| CN109810222A (en) * | 2017-11-22 | 2019-05-28 | 财团法人工业技术研究院 | The preparation method of carbon fiber precursor composition and carbon fiber predecessor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1903899A (en) * | 2005-07-28 | 2007-01-31 | 西北工业大学 | MAA/AN copolymer foamed plastic and its preparation method |
| CN101027353A (en) * | 2004-07-16 | 2007-08-29 | 西巴特殊化学品控股有限公司 | Porous inorganic materials containing polymer additives |
| CN101248135A (en) * | 2005-06-24 | 2008-08-20 | 埃克森美孚化学专利公司 | Plasticized functionalized propylene copolymer adhesive composition |
-
2013
- 2013-01-18 CN CN201310027934.XA patent/CN103122116B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101027353A (en) * | 2004-07-16 | 2007-08-29 | 西巴特殊化学品控股有限公司 | Porous inorganic materials containing polymer additives |
| CN101248135A (en) * | 2005-06-24 | 2008-08-20 | 埃克森美孚化学专利公司 | Plasticized functionalized propylene copolymer adhesive composition |
| CN1903899A (en) * | 2005-07-28 | 2007-01-31 | 西北工业大学 | MAA/AN copolymer foamed plastic and its preparation method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524662A (en) * | 2013-10-23 | 2014-01-22 | 江苏兆鋆新材料科技有限公司 | Preparation method of microporous AN/MAA (acrylic nitrile/methacrylic acid) copolymer foam |
| CN103524661A (en) * | 2013-10-23 | 2014-01-22 | 江苏兆鋆新材料科技有限公司 | Preparation method of nano silica modified polymethacrylimide foam |
| CN103554354A (en) * | 2013-10-23 | 2014-02-05 | 江苏兆鋆新材料科技有限公司 | Method for preparing high-density polymethacrylimide foam material |
| CN104849176A (en) * | 2015-04-16 | 2015-08-19 | 中国石油大学(北京) | Flaky body glue preparation device and microsphere viscoelasticity measuring method based on body glue |
| CN104849176B (en) * | 2015-04-16 | 2017-12-26 | 中国石油大学(北京) | Microballoon viscoelasticity measuring method based on body glue |
| CN109810222A (en) * | 2017-11-22 | 2019-05-28 | 财团法人工业技术研究院 | The preparation method of carbon fiber precursor composition and carbon fiber predecessor |
| CN109810222B (en) * | 2017-11-22 | 2021-03-30 | 财团法人工业技术研究院 | Carbon fiber precursor composition and preparation method of carbon fiber precursor |
| CN111087735A (en) * | 2019-12-24 | 2020-05-01 | 安徽昌发实业有限公司 | Compression-resistant anti-deformation heat-insulation material for furniture production |
| CN111087735B (en) * | 2019-12-24 | 2022-03-08 | 安徽昌发实业有限公司 | Compression-resistant anti-deformation heat-insulation material for furniture production |
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Address after: No. 6801, North 2nd Ring Road, hi tech Zone, Baoding City, Hebei Province, 071000 Patentee after: Baoding weisai New Material Technology Co.,Ltd. Address before: 071023 northwest of Henan Zhuang village, Xiantai Township, high tech Zone, Baoding City, Hebei Province Patentee before: BAODING SAIWEI COMPOSITE MATERIAL TECHNOLOGY Co.,Ltd. |
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