CN103738038B - The preparation method of phenolic foam composite board - Google Patents
The preparation method of phenolic foam composite board Download PDFInfo
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- CN103738038B CN103738038B CN201310724977.3A CN201310724977A CN103738038B CN 103738038 B CN103738038 B CN 103738038B CN 201310724977 A CN201310724977 A CN 201310724977A CN 103738038 B CN103738038 B CN 103738038B
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- metal decking
- parts
- composite board
- phenolic
- foam composite
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- 239000006260 foam Substances 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- 239000005011 phenolic resin Substances 0.000 claims abstract description 31
- 229920005610 lignin Polymers 0.000 claims abstract description 27
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 230000004048 modification Effects 0.000 claims abstract description 26
- 238000012986 modification Methods 0.000 claims abstract description 26
- 239000003292 glue Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 229920002635 polyurethane Polymers 0.000 claims abstract description 17
- 239000004814 polyurethane Substances 0.000 claims abstract description 17
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 14
- 238000005187 foaming Methods 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 5
- 239000003063 flame retardant Substances 0.000 claims abstract description 5
- 239000004088 foaming agent Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000011888 foil Substances 0.000 claims description 7
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 phenolic aldehyde Chemical class 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical group CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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Abstract
The present invention relates to building energy conservation new material technology field, the preparation method particularly relating to a kind of phenolic foam composite board: at upper and lower metal decking surface-coated aqueous polyurethane glue, be thermally formed glue-line; Lignin modification phenol resin foam mixture is placed between described upper metal decking and lower metal decking, foaming, curing molding; Lignin modification phenol resin foam mixture is by 100 parts of lignin modification phenolic resin, emulsifying agent 2 parts, fire retardant 2 parts, foaming agent 5 parts, 10 parts of firming agent composition. Solve phenolic foam composite board and there is very big brittleness problems, by the phenol formaldehyde foam that phenol-formaldehyde resin modified foaming is obtained, there is good toughness, the raising of phenol formaldehyde foam toughness makes phenol formaldehyde foam increase with metal faced bond area, further increases the adhesion strength of phenol formaldehyde foam and composite board.
Description
Technical field
The present invention relates to building energy conservation new material technology field, the preparation method particularly relating to a kind of phenolic foam composite board.
Background technology
Phenolic foam composite board has lightweight, fire prevention, chance naked light do not burn, smokeless, nontoxic, without dripping off, use temperature to enclose extensively (-196～+200 DEG C), do not shrink under low temperature environment, not brittle feature. Owing to phenol formaldehyde foam rate of closed hole is high, then heat conductivity low (can lower than 0.030w/mk), heat-proof quality is good, and has certain water-resistance and water vapour permeability, is good heat insulating energy saving material, the desirable adiabator of HVAC Refrigeration Engineering especially. Owing to phenolic aldehyde has benzene ring structure, so dimensionally stable, rate of change < 1%. And chemical composition stability, anticorrosion aging resistance, particularly resistant to organic solution, strong acid, weak base corrosion. So, phenolic foam composite plate is very good fire prevention, thermal insulation, environment-friendly and green insulation material energy-conservation, attractive in appearance.
Cementability between existing phenol formaldehyde foam and phenol formaldehyde foam surface sheet material compound is strong, namely bonding loosely, when carrying out secondary operations after producing finished product, easily depart from, be easily peeled phenomenon. The patent No. is that CN101214746B discloses one by being uniformly coated with one layer of composite glue at panel, through being dried to viscous hands, then with incombustible glass fibre goods compound under heating backer roll, after compound through dry composite panel, the method substantially increases bonding intensity of phenolic foam composite sheet material. But the use of compound adhesive not only makes production cost improve, and contaminated environment, simultaneously because phenolic resin contains the phenolic foam composite board that this rigid structure of phenyl ring makes production of resins go out has very big fragility.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is in that the preparation method providing a kind of phenolic foam board, the method not only reduces compound adhesive and uses the environmental pollution caused, and solves the problem that composite board fragility is big simultaneously, and further increases bonding intensity of phenolic foam composite sheet material.
The preparation method that the invention provides a kind of phenolic foam board, comprises the following steps:
It is coated with aqueous polyurethane glue at upper metal decking and lower metal decking apparent surface, at 30-70 DEG C, is thermally formed glue-line;
Lignin modification phenol resin foam mixture is placed between described upper metal decking and lower metal decking, carries out foaming, obtain phenolic foam composite board after curing molding;
Wherein said lignin modification phenol resin foam mixture is by 100 parts of lignin modification phenolic resin, emulsifying agent 2 parts, fire retardant 2 parts, foaming agent 5 parts, 10 parts of firming agent composition.
Preferably, the temperature of described heating glue formation glue-line is 45-55 DEG C.
Preferably, described water-borne polyurethane bond is made up of two kinds of components of black and white material, and black and white material ratio is 2-5:1.
Preferably, described upper metal decking and lower metal decking are color steel.
The preparation method that present invention also offers a kind of phenolic foam board, comprises the following steps:
In upper metal decking or lower metal decking opposite face, one side coating aqueous polyurethane glue, is thermally formed glue-line at 30-70 DEG C;
Lignin modification phenol resin foam mixture is placed between described upper metal decking and lower metal decking, carries out foaming, obtain phenolic foam composite board after curing molding;
Wherein said lignin modification phenol resin foam mixture is by 100 parts of lignin modification phenolic resin, emulsifying agent 2 parts, fire retardant 2 parts, foaming agent 5 parts, 10 parts of firming agent composition.
Preferably, the temperature of described heating glue formation glue-line is 45-55 DEG C.
Preferably, described glue is made up of two kinds of components of black and white material, and black and white material ratio is 2-5:1.
Preferably, the metal decking of described surface-coated glue is color steel.
Preferably, described surface is not coated by the metal decking of glue is aluminum foil plate.
Preferably, described aluminum foil plate inner surface is covered with plucking non-woven fabrics.
Compared with prior art, the present invention uses water-borne polyurethane bond as compound adhesive, phenolic resin is modified simultaneously, the use temperature of water-borne polyurethane bond is controlled and lignin modification phenolic resin processes, solve phenolic foam composite board and there is very big brittleness problems. Wherein, water-borne polyurethane bond uses water as solvent, reduces the pollution to environment. Lignin modification phenolic resin is introducing toughness Long carbon chain on phenyl ring, by the phenol formaldehyde foam that phenol-formaldehyde resin modified foaming is obtained, there is good toughness, the raising of phenol formaldehyde foam toughness makes phenol formaldehyde foam increase with metal faced bond area, further increases the adhesion strength of phenol formaldehyde foam and composite board.
Detailed description of the invention
Embodiment 1
1) utilize galvanized sheet as upper and lower metal decking, be coated with, at galvanized sheet inner surface, the aqueous polyurethane glue that black and white material ratio is 2:1, at 30 DEG C, be thermally formed glue-line;
2) lignin modification phenol resin foam mixture is placed on described lower floor galvanized sheet, carries out foaming, obtain phenolic foam composite board after curing molding;
Wherein said lignin modification phenol resin foam mixture is by 100 parts of softwood lignin modification phenolic resin, aliphatic alcohol polyethenoxy 2 parts, triphenyl phosphate 2 parts, pentane 5 parts, toluenesulfonic acid 10 parts composition.
Comparative example 1
1) utilize galvanized sheet as upper and lower metal decking, be coated with butadiene-styrene latex at galvanized sheet inner surface;
Lignin modification phenol resin foam mixture is placed between described tinplate and corrosion resistant plate, carries out foaming, obtain phenolic foam composite board after curing molding;
Wherein said lignin modification phenol resin foam mixture is by 100 parts of softwood lignin modification phenolic resin, aliphatic alcohol polyethenoxy 2 parts, triphenyl phosphate 2 parts, pentane 2 parts, toluenesulfonic acid 10 parts composition.
Comparative example 2
1) utilize color steel as upper and lower metal decking, be coated with, at two sides color steel opposite face, the aqueous polyurethane glue that black and white material ratio is 5:1, at 70 DEG C, be thermally formed glue-line;
2) phenol resin foam mixture is placed between described upper and lower color steel, carries out foaming, obtain phenolic foam composite board after curing molding.
Comparative example 3
1) utilize color steel as with aluminium sheet respectively as upper and lower metal decking, at color steel lower surface and the equal SGA of aluminium sheet upper surface;
2) phenol resin foam mixture is placed between described upper and lower color steel, carries out foaming, obtain phenolic foam composite board after curing molding.
Comparative example 4
1) utilize aluminium foil and color steel respectively as upper and lower metal decking, be coated with, at color steel upper surface, the aqueous polyurethane glue that black and white material ratio is 3:1, at 48 DEG C, be thermally formed glue-line;
2) phenol resin foam is placed between described color steel and aluminum foil plate, carries out foaming, obtain phenolic foam composite board after curing molding.
Comparative example 5
1) utilize inner surface to be covered with the aluminum foil plate of plucking non-woven fabrics and color steel respectively as upper and lower metal decking, be coated with polyurethane adhesive at color steel upper surface;
2) lignin modification phenol resin foam mixture is placed between described color steel and aluminum foil plate, carries out foaming, obtain phenolic foam composite board after curing molding;
Wherein said lignin modification phenol resin foam mixture is by draft lignin and alkali lignin modified phenolic resin 100 parts, NPE 1 part and polyoxyethylene block copolymer 3 parts, 4 parts of magnesium hydroxide and calcium carbonate 2 parts, Pentamethylene. 2 parts and petroleum ether 5 parts, xylene monosulfonic acid 15 and phosphoric acid 5 parts composition.
The phenolic foam composite board that above-mentioned 10 groups of embodiments are produced carries out performance detection, and result is referring to table 1.
The performance test results of the phenolic resin that the embodiment of the present invention and comparative example provide
Embodiment described above is only that the preferred embodiment of the present invention is described; not design and the protection domain of the present invention is defined; under the premise without departing from design concept of the present invention; various modification that in this area, technical scheme is made by ordinary skill technical staff and improvement, all should fall into protection scope of the present invention.
Claims (7)
1. the preparation method of a phenolic foam composite board, it is characterised in that comprise the following steps:
It is coated with aqueous polyurethane glue at upper metal decking and lower metal decking apparent surface, at 45-55 DEG C, is thermally formed glue-line;
Lignin modification phenol resin foam mixture is placed between described upper metal decking and lower metal decking, carries out foaming, obtain phenolic foam composite board after curing molding;
Wherein said lignin modification phenol resin foam mixture is by 100 parts of lignin modification phenolic resin, emulsifying agent 2 parts, fire retardant 2 parts, foaming agent 5 parts, 10 parts of firming agent composition;
Described aqueous polyurethane glue is made up of two kinds of components of black and white material, and black and white material ratio is 2-5:1.
2. the preparation method of a kind of phenolic foam composite board according to claim 1, it is characterised in that described upper metal decking and lower metal decking are color steel.
3. the preparation method of a phenolic foam composite board, it is characterised in that comprise the following steps:
1) one side coating aqueous polyurethane glue in upper metal decking or lower metal decking apparent surface, is thermally formed glue-line at 30-70 DEG C;
Lignin modification phenol resin foam mixture is placed between described upper metal decking and lower metal decking, carries out foaming, obtain phenolic foam composite board after curing molding;
Wherein said lignin modification phenol resin foam mixture is by 100 parts of lignin modification phenolic resin, emulsifying agent 2-7 part, fire retardant 2-10 part, foaming agent 2-10 part, and firming agent 10-30 part forms;
Described aqueous polyurethane glue is made up of two kinds of components of black and white material, and black and white material ratio is 2-5:1.
4. the preparation method of a kind of phenolic foam composite board according to claim 3, it is characterised in that described in be thermally formed the temperature of glue-line and be 45-55 DEG C.
5. the preparation method of a kind of phenolic foam composite board according to claim 3, it is characterised in that the metal decking of described surface-coated aqueous polyurethane glue is color steel.
6. the preparation method of a kind of phenolic foam composite board according to claim 3, it is characterised in that it is aluminum foil plate that described surface is not coated by the metal decking of aqueous polyurethane glue.
7. the preparation method of a kind of phenolic foam composite board according to claim 6, it is characterised in that described aluminum foil plate inner surface is covered with plucking non-woven fabrics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724977.3A CN103738038B (en) | 2013-12-25 | 2013-12-25 | The preparation method of phenolic foam composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310724977.3A CN103738038B (en) | 2013-12-25 | 2013-12-25 | The preparation method of phenolic foam composite board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103738038A CN103738038A (en) | 2014-04-23 |
| CN103738038B true CN103738038B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310724977.3A Active CN103738038B (en) | 2013-12-25 | 2013-12-25 | The preparation method of phenolic foam composite board |
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| Country | Link |
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| CN (1) | CN103738038B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2624406A (en) * | 2022-11-16 | 2024-05-22 | Advanced Innergy Ltd | Passive fire-resistant structures |
Citations (6)
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|---|---|---|---|---|
| CN101214746A (en) * | 2007-12-28 | 2008-07-09 | 厦门高特高新材料有限公司 | Method for improving bonding intensity of phenolic foam composite sheet material |
| CN102199266A (en) * | 2011-04-02 | 2011-09-28 | 山东圣泉化工股份有限公司 | Method for preparing phenolic resin and phenolic resin foaming body |
| CN102501469A (en) * | 2011-10-12 | 2012-06-20 | 山东圣泉化工股份有限公司 | Phenolic aldehyde color steel sandwich panel and preparation method thereof |
| CN102718940A (en) * | 2012-06-28 | 2012-10-10 | 广州高金技术产业集团有限公司 | High-bonding-strength and high-temperature-resisting phenolic resin modified polyurethane adhesive and preparation method thereof |
| CN102996915A (en) * | 2012-11-16 | 2013-03-27 | 滕州市华海新型保温材料有限公司 | Metal face type phenolic aldehyde composite air hose plate and production method thereof |
| CN103145938A (en) * | 2013-03-26 | 2013-06-12 | 山东圣泉化工股份有限公司 | Lignin-modified phenolic resin and synthetic method thereof as well as grinding wheel comprising lignin-modified phenolic resin |
-
2013
- 2013-12-25 CN CN201310724977.3A patent/CN103738038B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214746A (en) * | 2007-12-28 | 2008-07-09 | 厦门高特高新材料有限公司 | Method for improving bonding intensity of phenolic foam composite sheet material |
| CN102199266A (en) * | 2011-04-02 | 2011-09-28 | 山东圣泉化工股份有限公司 | Method for preparing phenolic resin and phenolic resin foaming body |
| CN102501469A (en) * | 2011-10-12 | 2012-06-20 | 山东圣泉化工股份有限公司 | Phenolic aldehyde color steel sandwich panel and preparation method thereof |
| CN102718940A (en) * | 2012-06-28 | 2012-10-10 | 广州高金技术产业集团有限公司 | High-bonding-strength and high-temperature-resisting phenolic resin modified polyurethane adhesive and preparation method thereof |
| CN102996915A (en) * | 2012-11-16 | 2013-03-27 | 滕州市华海新型保温材料有限公司 | Metal face type phenolic aldehyde composite air hose plate and production method thereof |
| CN103145938A (en) * | 2013-03-26 | 2013-06-12 | 山东圣泉化工股份有限公司 | Lignin-modified phenolic resin and synthetic method thereof as well as grinding wheel comprising lignin-modified phenolic resin |
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Denomination of invention: Preparation method for phenolic foam composite sheet material Effective date of registration: 20180727 Granted publication date: 20160615 Pledgee: China Co truction Bank Corp Ji'nan Zhangqiu sub branch Pledgor: SHANDONG SHENGQUAN NEW MATERIAL CO., LTD. Registration number: 2018370000118 |
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Date of cancellation: 20210825 Granted publication date: 20160615 Pledgee: China Co. truction Bank Corp Ji'nan Zhangqiu sub branch Pledgor: SHANDONG SHENGQUAN NEW MATERIAL Co.,Ltd. Registration number: 2018370000118 |
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Denomination of invention: Preparation of phenolic foam composite sheet Effective date of registration: 20210908 Granted publication date: 20160615 Pledgee: China Co. truction Bank Corp Ji'nan Zhangqiu sub branch Pledgor: SHANDONG SHENGQUAN NEW MATERIAL Co.,Ltd. Registration number: Y2021980009038 |