CN109021489A - Phenol formaldehyde foam aluminum honeycomb product and preparation process - Google Patents
Phenol formaldehyde foam aluminum honeycomb product and preparation process Download PDFInfo
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- CN109021489A CN109021489A CN201710430193.8A CN201710430193A CN109021489A CN 109021489 A CN109021489 A CN 109021489A CN 201710430193 A CN201710430193 A CN 201710430193A CN 109021489 A CN109021489 A CN 109021489A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/141—Hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of phenol formaldehyde foam aluminum honeycomb product and preparation processes, belong to field of composite material preparation.Phenol formaldehyde foam aluminum honeycomb product of the present invention includes the component of following parts by weight: 80-120 parts of Foamex；1-8 parts of surfactant；8-25 parts of filler；3-12 parts of foaming agent；3-18 parts of curing agent.Preparation process of the invention includes: step 1: the bottom for the foaming mould that phenol formaldehyde foam resin agitating is uniformly tiled after the cleaning afterwards；Step 2: aluminium honeycomb core being impregnated in phenol formaldehyde foam resin in step 1, cover foaming mould cover board；Step 3: being attached by connection ring and foaming mould after fixing, foaming mould is heated and starts to foam；For phenol formaldehyde foam aluminum honeycomb product of the invention compared with legacy cellular sandwich material, compressive strength improves 10%-30%, and bending deformation intensity improves 20% or so.
Description
Technical field
The invention belongs to the technical fields of composite material preparation, and in particular to a kind of phenol formaldehyde foam aluminum honeycomb product and preparation
Technique.
Background technique
Aluminum honeycomb material is a kind of important lightweight structural material, its structure determines its characteristic, i.e., light, compression
Uniformly, resistance to compression, bending resistance, shearing resistance have good buffering anti-vibration performance.It is widely used in aerospace field.But
It is that there are a deadly defects for such material, when its superficial layer is worn or occurs crack and gap, water and steam is just
It easily enters in the dense cellular of the structure, under cryogenic, setting expansion occurs into the water in honeycomb can break naturally
The bonding in bad adjacent honeycomb space, and chain reaction can be caused to eventually lead to honeycomb core inner wall abutting edge cracking, so that
Honeycomb core reduced performance even fails and is badly in need of repairing or replace, and this frequent maintenance necessarily leads to high maintenance cost.
Cellular material and phenol formaldehyde foam are combined, bee aluminium phenolic foam composite material is prepared, can have lightweight, sound insulation in phenol formaldehyde foam
And on the basis of the characteristics such as heat-proof quality, in conjunction with performances such as the high specific strength of honeycomb and specific modulus, excellent comprehensive performance is obtained,
Expand the application field of composite material.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of phenol formaldehyde foam aluminum honeycomb product and preparation processes.Of the invention
For phenol formaldehyde foam aluminum honeycomb product compared with legacy cellular sandwich material, the performances such as heat-insulated, fire-retardant, mechanical, compressive strength are bright
Aobvious enhancing；And preparation process is simple, while guaranteeing the uniformity of material structure, so that the compressive strength of material improves
10%-30%, bending deformation intensity improve 20% or so.
In order to solve the above technical problems, present invention offer technical solution is as follows:
The present invention provides a kind of phenol formaldehyde foam aluminum honeycomb product, the phenol formaldehyde foam tree including aluminum honeycomb and in aluminum honeycomb
Rouge, the phenol formaldehyde foam resin include the component of following parts by weight:
80-120 parts of Foamex；
1-8 parts of surfactant；
8-25 parts of filler；
3-12 parts of foaming agent；
3-18 parts of curing agent.
Further, the phenol formaldehyde foam resin includes the component of following parts by weight:
90-100 parts of Foamex；
1-5 parts of surfactant；
10-20 parts of filler；
5-10 parts of foaming agent；
5-15 parts of curing agent.
Preferably, the surfactant is Tween 80 or silicon hexylene glycol copolymer, and the filler is aluminium hydroxide or hydrogen
Magnesia, the foaming agent are in pentane or methylene chloride；The curing agent is p-methyl benzenesulfonic acid, phenolsulfonic acid or hydrochloric acid
In any one.
The present invention also provides a kind of preparation processes of above-mentioned phenol formaldehyde foam aluminum honeycomb product, and the preparation process includes following
Step:
Step 1: the bottom for the foaming mould that phenol formaldehyde foam resin agitating is uniformly tiled after the cleaning afterwards；
Step 2: aluminium honeycomb core being impregnated in phenol formaldehyde foam resin in step 1, cover foaming mould cover board；
Step 3: after the foaming mould cover board in step 2 is attached fixation by connection ring and foaming mould, passing through
After connection ring and foaming mould are attached fixation, foaming mould is heated and starts to foam；
Step 4: after the completion of foaming, removing extra foam to consistent with honeycomb core height, it is small to continue heat aging 4-8
When.
Preferably, the foaming mould in the step 1 includes the groove profile mold and latticed mold connected by connection ring,
In, heating device is installed on the groove profile mold.
Further, the height of the aluminium honeycomb core in the step 2 is 5-20mm.
Preferably, the heating method in the step 3 is liquid heating, and temperature is 50 DEG C -100 DEG C.
The invention has the following advantages:
Phenol formaldehyde foam aluminum honeycomb product of the invention compared with legacy cellular sandwich material, it is heat-insulated, fire-retardant, mechanical,
The performances such as compressive strength are remarkably reinforced；And preparation process is simple, while guaranteeing the uniformity of material structure, so that material
The compressive strength of material improves 10%-30%, and bending deformation intensity improves 20% or so.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of phenol formaldehyde foam aluminum honeycomb product of the invention；
Partial enlarged view of the Fig. 2 for the structural schematic diagram of phenol formaldehyde foam aluminum honeycomb product of the invention, 1. foaming moulds, 2.
Foamex, 3. die cover plates, 4. water bath heating devices, 5. connection rings, 6. aluminium honeycomb cores.
Specific embodiment
The present invention provides a kind of phenol formaldehyde foam aluminum honeycomb product and preparation processes, to make the purpose of the present invention, technical side
Case and effect are clearer, clear, and the present invention is described in more detail below.It should be appreciated that specific reality described herein
It applies example to be only used to explain the present invention, be not intended to limit the present invention.The person that is not specified actual conditions in embodiment, according to conventional strip
The condition that part or manufacturer suggest carries out.Reagents or instruments used without specified manufacturer, being can be by commercially available purchase
The conventional products of acquisition.
Embodiment 1
A kind of phenol formaldehyde foam aluminum honeycomb product, the phenol formaldehyde foam resin including aluminum honeycomb and in aluminum honeycomb, phenolic aldehyde bubble
Foam resin is grouped as by the group of following parts by weight:
80 parts of Foamex；
1 part of Tween 80；
8 parts of aluminium hydroxide；
3 parts of pentane；
3 parts of p-methyl benzenesulfonic acid.
Embodiment 2
A kind of phenol formaldehyde foam aluminum honeycomb product, the phenol formaldehyde foam resin including aluminum honeycomb and in aluminum honeycomb, phenolic aldehyde bubble
Foam resin is grouped as by the group of following parts by weight:
120 parts of Foamex；
8 parts of Tween 80；
25 parts of aluminium hydroxide；
12 parts of pentane；
18 parts of p-methyl benzenesulfonic acid.
Embodiment 3
A kind of phenol formaldehyde foam aluminum honeycomb product, the phenol formaldehyde foam resin including aluminum honeycomb and in aluminum honeycomb, phenolic aldehyde bubble
Foam resin is grouped as by the group of following parts by weight:
100 parts of Foamex；
5 parts of Tween 80；
15 parts of aluminium hydroxide；
8 parts of pentane；
10 parts of phenolsulfonic acid.
Embodiment 4
A kind of phenol formaldehyde foam aluminum honeycomb product, the phenol formaldehyde foam resin including aluminum honeycomb and in aluminum honeycomb, phenolic aldehyde bubble
Foam resin is grouped as by the group of following parts by weight:
90 parts of Foamex；
Silicon hexylene glycol copolymer 1 part；
10 parts of magnesium hydroxide；
5 parts of methylene chloride；
5 parts of phenolsulfonic acid.
Embodiment 5
A kind of phenol formaldehyde foam aluminum honeycomb product, the phenol formaldehyde foam resin including aluminum honeycomb and in aluminum honeycomb, phenolic aldehyde bubble
Foam resin is grouped as by the group of following parts by weight::
100 parts of Foamex；
5 parts of silicon hexylene glycol copolymer；
20 parts of magnesium hydroxide；
10 parts of methylene chloride；
15 parts of hydrochloric acid.
Embodiment 6
A kind of phenol formaldehyde foam aluminum honeycomb product, the phenol formaldehyde foam resin including aluminum honeycomb and in aluminum honeycomb, phenolic aldehyde bubble
Foam resin is grouped as by the group of following parts by weight:
95 parts of Foamex；
3 parts of silicon hexylene glycol copolymer；
15 parts of magnesium hydroxide；
8 parts of methylene chloride；
10 parts of hydrochloric acid.
Embodiment 7
The preparation process of the phenol formaldehyde foam aluminum honeycomb product of above-described embodiment 1-6, comprising the following steps:
Step 1: phenol formaldehyde foam resin 2 is tiled the bottom of foaming mould 1 after the cleaning after mixing evenly；Foaming mould
1 includes the groove profile mold and latticed mold connected by connection ring, wherein heating device 4 is installed on the groove profile mold；
Step 2: aluminium honeycomb core 6 being impregnated in phenol formaldehyde foam resin in step 1, cover foaming mould cover board 3；Its
In, the height of aluminium honeycomb core 6 is 5mm；
Step 3: being attached by connection ring 5 and foaming mould 1 after fixing, foaming mould 1 is heated and started
Foaming；Heating method is liquid heating, and temperature is 50 DEG C；
Step 4: after the completion of foaming, removing extra foam to consistent, heat aging 4 hours of the continuation with 6 height of honeycomb core.
Embodiment 8
The preparation process of above-described embodiment 1-6 phenol formaldehyde foam aluminum honeycomb product, comprising the following steps:
Step 1: phenol formaldehyde foam resin 2 is tiled the bottom of foaming mould 1 after the cleaning after mixing evenly；Foaming mould
1 includes the groove profile mold and latticed mold by connection hook connects, wherein heating device 4 is installed on the groove profile mold.
Step 2: aluminium honeycomb core 6 being impregnated in phenol formaldehyde foam resin 2 in step 1, cover foaming mould cover board 3；Aluminium
The height of honeycomb core 6 is 20mm.
Step 3: the foaming mould cover board 3 in step 2 is passed through into connection ring and foaming mould 1 is attached after fixing, it is right
Foaming mould 1 is heated and starts to foam；Heating method is liquid heating, and temperature is 100 DEG C.
Step 4: after the completion of foaming, removing extra foam to consistent, heat aging 8 hours of the continuation with 6 height of honeycomb core.
The compressive strength and bending deformation intensity for the phenol formaldehyde foam aluminum honeycomb product that embodiment 1-6 is obtained by embodiment 7
As shown in table 1, aluminum honeycomb model 0.05/3, density are 60 ㎏/m3。
Table 1
| Product | Compressive strength (MP) | Bending deformation intensity (MP) |
| Embodiment 1 | 2.3 | 2.8 |
| Embodiment 2 | 2.7 | 2.8 |
| Embodiment 3 | 2.2 | 3.2 |
| Embodiment 4 | 2.3 | 3.0 |
| Embodiment 5 | 2.9 | 3.1 |
| Embodiment 6 | 3.0 | 3.3 |
The compressive strength and bending deformation intensity for the phenol formaldehyde foam aluminum honeycomb product that embodiment 1-6 is obtained by embodiment 8
As shown in table 2, aluminum honeycomb model 0.05/3, density are 60 ㎏/m3。
Table 2
| Product | Compressive strength (MP) | Bending deformation intensity (MP) |
| Embodiment 1 | 2.4 | 3.1 |
| Embodiment 2 | 2.0 | 3.3 |
| Embodiment 3 | 2.6 | 2.9 |
| Embodiment 4 | 2.8 | 3.0 |
| Embodiment 5 | 2.1 | 3.3 |
| Embodiment 6 | 2.5 | 2.9 |
Legacy cellular interlayer be by aluminium foil handle cleaning, aluminium foil gluing, aluminium foil overlapping solidify, the drawing and forming of sandwich
Processing and covering several steps composition, and covering and the combination of honeycomb core rely primarily on it is be bonded form, bond area is small, is easy
Phenomena such as causing covering removing or damaged skin；Its compressive strength can only achieve 2MP, and bending deformation intensity can only achieve
2.5MP。
Compared with legacy cellular sandwich material, the compressive strength of material is mentioned phenol formaldehyde foam aluminum honeycomb product of the invention
High 10%-30%, bending deformation intensity improve 20% or so.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of phenol formaldehyde foam aluminum honeycomb product, the phenol formaldehyde foam resin including aluminum honeycomb and in aluminum honeycomb, feature exist
In the phenol formaldehyde foam resin includes the component of following parts by weight:
80-120 parts of Foamex；
1-8 parts of surfactant；
8-25 parts of filler；
3-12 parts of foaming agent；
3-18 parts of curing agent.
2. phenol formaldehyde foam aluminum honeycomb product according to claim 1, which is characterized in that the phenol formaldehyde foam resin includes such as
The component of lower parts by weight:
90-100 parts of Foamex；
1-5 parts of surfactant；
10-20 parts of filler；
5-10 parts of foaming agent；
5-15 parts of curing agent.
3. phenol formaldehyde foam aluminum honeycomb product according to claim 1 or 2, which is characterized in that the surfactant is to spit
Temperature 80 or silicon hexylene glycol copolymer, the filler are aluminium hydroxide or magnesium hydroxide, and the foaming agent is pentane or dichloromethane
Alkane；The curing agent is any one in p-methyl benzenesulfonic acid, phenolsulfonic acid or hydrochloric acid.
4. the preparation process of any phenol formaldehyde foam aluminum honeycomb product of claim 1-3, which is characterized in that the preparation work
Skill the following steps are included:
Step 1: the bottom for the foaming mould that phenol formaldehyde foam resin agitating is uniformly tiled after the cleaning afterwards；
Step 2: aluminium honeycomb core being impregnated in phenol formaldehyde foam resin in step 1, cover foaming mould cover board；
Step 3: after the foaming mould cover board in step 2 is attached fixation by connection ring and foaming mould, to foaming mould
Tool is heated and starts to foam；
Step 4: after the completion of foaming, removing extra foam to consistent with honeycomb core height, continue 4-8 hours heat aging.
5. the preparation process of phenol formaldehyde foam aluminum honeycomb product according to claim 4, which is characterized in that in the step 1
Foaming mould include by connection ring connect groove profile mold and latticed mold.
6. the preparation process of phenol formaldehyde foam aluminum honeycomb product according to claim 5, which is characterized in that the groove profile mold
Upper installation heating device.
7. the preparation process of phenol formaldehyde foam aluminum honeycomb product according to claim 4, which is characterized in that in the step 2
Aluminium honeycomb core height be 5-20mm.
8. the preparation process of phenol formaldehyde foam aluminum honeycomb product according to claim 4, which is characterized in that in the step 3
Heating method be liquid heating, temperature be 50 DEG C -100 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710430193.8A CN109021489A (en) | 2017-06-09 | 2017-06-09 | Phenol formaldehyde foam aluminum honeycomb product and preparation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710430193.8A CN109021489A (en) | 2017-06-09 | 2017-06-09 | Phenol formaldehyde foam aluminum honeycomb product and preparation process |
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Family
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1496350A (en) * | 1966-10-10 | 1967-09-29 | Roland Werke F Waldmann K G | Method and device for the manufacture of plates and similar bodies of rigid phenolic resin foam |
| CN201628074U (en) * | 2009-12-24 | 2010-11-10 | 苏州浩海高分子材料研究所有限公司 | Honeycomb and phenolic aldehyde sandwich composite material |
| CN102198744A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Method for manufacturing phenol-formaldehyde-foam-filled honeycomb core reinforced advanced compound material |
| CN102199308A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Manufacturing method of phenolic-foam-filled honeycomb composite material |
| CN202416634U (en) * | 2011-03-04 | 2012-09-05 | 郑盈 | Energy-saving heat-insulation enameled pressed steel curtain wall |
| CN103203883A (en) * | 2013-03-22 | 2013-07-17 | 苏州芳磊蜂窝复合材料有限公司 | Method for preparing honeycomb enhanced phenolic foam composite materials |
-
2017
- 2017-06-09 CN CN201710430193.8A patent/CN109021489A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1496350A (en) * | 1966-10-10 | 1967-09-29 | Roland Werke F Waldmann K G | Method and device for the manufacture of plates and similar bodies of rigid phenolic resin foam |
| CN201628074U (en) * | 2009-12-24 | 2010-11-10 | 苏州浩海高分子材料研究所有限公司 | Honeycomb and phenolic aldehyde sandwich composite material |
| CN102198744A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Method for manufacturing phenol-formaldehyde-foam-filled honeycomb core reinforced advanced compound material |
| CN102199308A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Manufacturing method of phenolic-foam-filled honeycomb composite material |
| CN202416634U (en) * | 2011-03-04 | 2012-09-05 | 郑盈 | Energy-saving heat-insulation enameled pressed steel curtain wall |
| CN103203883A (en) * | 2013-03-22 | 2013-07-17 | 苏州芳磊蜂窝复合材料有限公司 | Method for preparing honeycomb enhanced phenolic foam composite materials |
Non-Patent Citations (2)
| Title |
|---|
| 曾人泉: "《塑料加工助剂》", 31 August 1997, 中国物资出版社 * |
| 高慎斌 等: "《卫星制造技术 下》", 31 August 2009, 中国宇航出版社 * |
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Effective date of registration: 20190412 Address after: 151500 Industrial Demonstration Base of Lanxi County, Suihua City, Heilongjiang Province (Development Zone) Applicant after: Heilongjiang Zhonghe Xincheng New Material Co., Ltd. Address before: 101117 100m north of Xie Lou Village Committee, Lucheng Town, Tongzhou District, Beijing Applicant before: Beijing Qiangmu International Co., Ltd. |
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Application publication date: 20181218 |