CN111590976A - Waterproof gas treatment method for honeycomb sandwich structure composite material - Google Patents

Waterproof gas treatment method for honeycomb sandwich structure composite material Download PDF

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Publication number
CN111590976A
CN111590976A CN202010466398.3A CN202010466398A CN111590976A CN 111590976 A CN111590976 A CN 111590976A CN 202010466398 A CN202010466398 A CN 202010466398A CN 111590976 A CN111590976 A CN 111590976A
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China
Prior art keywords
layer
waterproof
composite material
sandwich
skin layer
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Pending
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CN202010466398.3A
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Chinese (zh)
Inventor
吴雄芳
杨雪梅
孙浩
程章洁
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Ytd Langfang Composite Materials Technology Co ltd
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Ytd Langfang Composite Materials Technology Co ltd
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Priority to CN202010466398.3A priority Critical patent/CN111590976A/en
Publication of CN111590976A publication Critical patent/CN111590976A/en
Pending legal-status Critical Current

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    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable

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Abstract

The invention discloses a waterproof air treatment method of a sandwich structure composite material, which comprises a waterproof air sandwich composite material structure, wherein the waterproof air sandwich composite material structure comprises an outer skin layer, an outer waterproof layer, a sandwich structure layer, an inner waterproof layer and an inner skin layer, wherein the outer skin layer and the inner skin layer are made of one or more reinforced epoxy resin prepregs laminated from glass fibers, carbon fibers and aramid fibers; the composite material has the advantages of scientific and reasonable structure and simple operation, effectively blocks the erosion of moisture to the core material by adding the waterproof air layer between the skin and the core material, avoids the performance reduction of the sandwich structure due to the moisture erosion, improves the environmental adaptability of the composite material with the sandwich structure, prolongs the service life and is suitable for popularization and use.

Description

Waterproof gas treatment method for honeycomb sandwich structure composite material
Technical Field
The invention relates to the technical field of composite materials, in particular to a waterproof air treatment method for a honeycomb sandwich structure composite material.
Background
Since the beginning of the last century, various composite materials come out one after another and are widely applied to various fields, as an interlayer composite material, the honeycomb interlayer composite material is widely applied to industries such as aviation, aerospace, ships, transportation and transportation due to the advantages of higher specific strength and modulus, better heat insulation and preservation performance, excellent impact resistance and the like, and meanwhile, along with the continuous development of processing and manufacturing technologies, the production cost of the honeycomb interlayer composite material is greatly reduced, so that the honeycomb interlayer composite material is widely applied to civil construction and packaging industries;
due to good market prospect of the honeycomb composite material, China has some researches on the honeycomb sandwich composite material at present, most of the researches are focused on the excellent performances of the honeycomb sandwich composite material such as mechanical performance, heat preservation, wave transmission and the like, the defects of the honeycomb sandwich structure are less concerned, and when the honeycomb sandwich material is used outdoors, particularly under the condition that a skin is thin, the waterproof performance of a product is poor, and the service life of the product is greatly influenced, so that the waterproof performance of the product is imperative.
Disclosure of Invention
The invention provides a waterproof air treatment method for a honeycomb sandwich structure composite material, which can effectively solve the problems that when the honeycomb sandwich material is used outdoors, particularly under the condition of thin skin, the waterproof air performance of a product is poor, and the service life of the product is greatly influenced in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a waterproof gas treatment method for a sandwich structure composite material comprises a waterproof gas sandwich composite material structure, wherein the waterproof gas sandwich composite material structure comprises an outer skin layer, an outer waterproof layer, a sandwich structure layer, an inner waterproof layer and an inner skin layer;
the outer skin layer and the inner skin layer are made of one or more reinforced epoxy resin prepregs of glass fiber, carbon fiber and aramid fiber in a laminated manner; the waterproof layer and the waterproof layer comprise a polytetrafluoroethylene film and an ultra-high molecular weight polyethylene film;
and an outer waterproof layer and an inner waterproof layer are respectively arranged on two sides of the sandwich layer.
Preferably, the outer waterproof layer and the inner waterproof layer are provided with an upper layer and a lower layer, and the outer waterproof layer and the inner waterproof layer are both arranged in a paving mode.
Preferably, the preparation method of the waterproof layer comprises the following steps:
A. paving a skin layer prepreg on the surface of the mould;
A. paving a waterproof film on the surface of the prepreg of the skin layer;
A. and paving a skin layer prepreg on the waterproof film.
Preferably, the number of layers and the material of the skin layer prepreg can be adjusted according to actual conditions.
Preferably, the outer skin layer, the inner skin layer and the sandwich layer are assembled together through a structural adhesive film.
Preferably, the form of the structural adhesive film comprises a fixed-state sheet body and an amorphous state.
Preferably, the sandwich layer can be formed by laminating and assembling a plurality of layers of different sandwich materials through a prepreg reinforcing layer.
Preferably, the sandwich core material comprises aramid paper honeycomb, aluminum honeycomb, polyurethane foam and PVC foam.
Compared with the prior art, the invention has the beneficial effects that: the honeycomb sandwich material has the advantages of scientific and reasonable structure, safe and convenient use, improved special moisture resistance when the honeycomb sandwich material is used outdoors, prolonged service life of the product, improved moisture resistance treatment of the product, and suitability for popularization and use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of the present invention;
reference numbers in the figures: 1. an outer skin layer; 2. an outer waterproof layer; 3. a sandwich structure layer; 4. an inner waterproof layer; 5. an inner skin layer.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1:
as shown in fig. 1, the present invention provides a technical solution, a method for treating moisture-proof performance of a sandwich structure composite material, comprising a moisture-proof sandwich composite material structure, wherein the moisture-proof composite material structure comprises an outer skin layer 1, an outer waterproof layer 2, a sandwich structure layer 3, an inner waterproof layer 4, and an inner skin layer 5;
the outer skin layer 1 and the inner skin layer 5 are made of one or more reinforced epoxy resin prepregs of glass fiber, carbon fiber and aramid fiber; the waterproof layers 2 and 4 include but not limited to polytetrafluoroethylene films and ultrahigh molecular weight polyethylene films;
and an outer waterproof layer 2 and an inner waterproof layer 4 are respectively arranged on two sides of the sandwich layer 3.
The outer waterproof layer 2 and the inner waterproof layer 4 are provided with an upper layer and a lower layer, and the outer waterproof layer 2 and the inner waterproof layer 4 are both arranged in a paving mode.
Example 2:
the invention provides a technical scheme, a waterproof gas treatment method of a sandwich structure composite material,
the preparation method of the waterproof layer comprises the following steps:
a1, paving a skin layer prepreg on the surface of the mould;
a2, paving a waterproof film on the surface of the prepreg of the skin layer;
a3, paving a skin layer prepreg on the waterproof film.
According to the technical scheme, the number of layers and the material of the skin layer prepreg can be adjusted according to actual conditions.
According to the technical scheme, the outer skin layer 1, the inner skin layer 5 and the sandwich layer 3 are assembled together through the structural adhesive film.
According to the technical scheme, the structural adhesive film comprises a fixed sheet body and an unfixed sheet body.
According to the technical scheme, the sandwich layer 3 can be formed by laminating and assembling a plurality of layers of sandwich materials of different types through prepreg reinforcing layers.
According to the technical scheme, the core material of the sandwich layer comprises aramid paper honeycomb, aluminum honeycomb, polyurethane foam and PVC foam.
Compared with the prior art, the invention has the beneficial effects that: the honeycomb sandwich material has the advantages of scientific and reasonable structure, safe and convenient use, improved special moisture resistance when the honeycomb sandwich material is used outdoors, prolonged service life of the product, improved moisture resistance treatment of the product, and suitability for popularization and use.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The waterproof gas treatment method of the sandwich structure composite material is characterized by comprising the following steps: the waterproof and waterproof composite material structure comprises a waterproof and waterproof interlayer composite material structure, wherein the waterproof and waterproof interlayer composite material structure comprises an outer skin layer (1), an outer waterproof layer (2), a sandwich structure layer (3), an inner waterproof layer (4) and an inner skin layer (5);
the outer skin layer (1) and the inner skin layer (5) are made of one or more reinforced epoxy resin prepreg laminates in glass fiber, carbon fiber and aramid fiber; the waterproof layers (2) and (4) comprise polytetrafluoroethylene films and ultrahigh molecular weight polyethylene films;
and an outer waterproof layer (2) and an inner waterproof layer (4) are respectively arranged on two sides of the sandwich layer (3).
2. The method for treating water and gas resistance of sandwich structure composite material according to claim 1, wherein the outer waterproof layer (2) and the inner waterproof layer (4) are provided with an upper layer and a lower layer, and the outer waterproof layer (2) and the inner waterproof layer (4) are both arranged in a paving manner.
3. The method for treating sandwich structure composite material for preventing moisture according to claim 2, wherein the method for preparing the waterproof layer comprises the following steps:
a1, paving a skin layer prepreg on the surface of the mould;
a2, paving a waterproof film on the surface of the prepreg of the skin layer;
a3, paving a skin layer prepreg on the waterproof film.
4. The method for treating the sandwich structure composite material for preventing moisture according to claim 3, wherein the number of layers and the material of the prepreg of the skin layer can be adjusted according to actual conditions.
5. The method for the moisture and air proofing treatment of the sandwich structure composite material is characterized in that the outer skin layer (1), the inner skin layer (5) and the sandwich layer (3) are assembled together through a structural adhesive film.
6. The method of claim 5, wherein the structural adhesive film is in the form of a fixed sheet and an amorphous sheet.
7. The method for treating sandwich structure composite material for preventing moisture according to claim 1, wherein the sandwich layer (3) can be formed by laminating and assembling a plurality of layers of different sandwich materials through prepreg reinforcing layers.
8. The method for treating sandwich structure composite material for preventing moisture according to claim 7, wherein the material of the sandwich layer core material comprises aramid paper honeycomb, aluminum honeycomb, polyurethane foam and PVC foam.
CN202010466398.3A 2020-05-28 2020-05-28 Waterproof gas treatment method for honeycomb sandwich structure composite material Pending CN111590976A (en)

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Citations (9)

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US4937125A (en) * 1987-06-19 1990-06-26 Etat Francais Lightweight sandwich designed for making multilayer structures resistant to impact and thermal aggressions
CN203637287U (en) * 2013-11-05 2014-06-11 广州金发碳纤维新材料发展有限公司 Carbon filter plate
CN206456031U (en) * 2017-02-08 2017-09-01 东莞市协创复合材料有限公司 A kind of carbon fiber board of fire-retardant cracking resistance
CN206784617U (en) * 2017-04-24 2017-12-22 内蒙古浩源新材料股份有限公司 A kind of heat-insulating flame-retardant advanced composite material (ACM) structure
WO2018189876A1 (en) * 2017-04-14 2018-10-18 三菱電機株式会社 Honeycomb sandwich structure and method for manufacturing same
CN208760110U (en) * 2018-09-17 2019-04-19 泉州源利鞋材有限公司 A kind of foam structure of high-insulativity
CN209159104U (en) * 2018-09-26 2019-07-26 株洲电力机车广缘科技有限责任公司 Rail traffic vehicles sandwich structure composite material
CN209240599U (en) * 2018-10-22 2019-08-13 江苏长海复合材料股份有限公司 Fiber-reinforced composite cellular board
CN110641088A (en) * 2019-09-29 2020-01-03 今创集团股份有限公司 Lightweight composite board for railway vehicle

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Publication number Priority date Publication date Assignee Title
US4937125A (en) * 1987-06-19 1990-06-26 Etat Francais Lightweight sandwich designed for making multilayer structures resistant to impact and thermal aggressions
CN203637287U (en) * 2013-11-05 2014-06-11 广州金发碳纤维新材料发展有限公司 Carbon filter plate
CN206456031U (en) * 2017-02-08 2017-09-01 东莞市协创复合材料有限公司 A kind of carbon fiber board of fire-retardant cracking resistance
WO2018189876A1 (en) * 2017-04-14 2018-10-18 三菱電機株式会社 Honeycomb sandwich structure and method for manufacturing same
CN206784617U (en) * 2017-04-24 2017-12-22 内蒙古浩源新材料股份有限公司 A kind of heat-insulating flame-retardant advanced composite material (ACM) structure
CN208760110U (en) * 2018-09-17 2019-04-19 泉州源利鞋材有限公司 A kind of foam structure of high-insulativity
CN209159104U (en) * 2018-09-26 2019-07-26 株洲电力机车广缘科技有限责任公司 Rail traffic vehicles sandwich structure composite material
CN209240599U (en) * 2018-10-22 2019-08-13 江苏长海复合材料股份有限公司 Fiber-reinforced composite cellular board
CN110641088A (en) * 2019-09-29 2020-01-03 今创集团股份有限公司 Lightweight composite board for railway vehicle

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Title
谢富原编著: "《先进复合材料制造技术》", 30 September 2017, 北京：航空工业出版社 *

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Application publication date: 20200828