CN103252929A - Imitating eastward diving beetle wing case plate and preparation method thereof - Google Patents
Imitating eastward diving beetle wing case plate and preparation method thereof Download PDFInfo
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- CN103252929A CN103252929A CN2013101866045A CN201310186604A CN103252929A CN 103252929 A CN103252929 A CN 103252929A CN 2013101866045 A CN2013101866045 A CN 2013101866045A CN 201310186604 A CN201310186604 A CN 201310186604A CN 103252929 A CN103252929 A CN 103252929A
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Abstract
The invention relates to an imitating eastward diving beetle wing case plate and a preparation method thereof, and belongs to the field of light weight structures. The imitating eastward diving beetle wing case comprises an upper panel (1), a lower panel (5) and a cavity core plate, and is characterized in that the cavity core plate comprises an upper corrugated plate (2) and a lower corrugated plate (4), the upper corrugated plate and the lower corrugated plate are symmetrically spliced to form a plurality of waist-shaped enveloping cavities, and the waist-shaped enveloping cavity bodies are also internally nested with waist-shaped core pipes (3); the waist-shaped core pipes (3), the upper corrugated plate (2) and the upper panel (1) are in surface contact, and the waist-shaped core pipes (3), the lower corrugated plate (4) and the lower panel (5) are in surface contact; and the upper panel (1), the upper corrugated plate (2), the lower corrugated plate (4) and the lower panel (5) are thin plates formed by molding and solidifying of a plurality of layers of resin-based carbon fiber prepreg cloth, and the waist-shaped core pipes (3) are hollow core pipes formed by molding and solidifying of a plurality of layers of resin-based carbon fiber prepreg cloth. The imitating eastward diving beetle wing case plate and the preparation method provided by the invention have the advantages of effectively improving the integrity of a core plate and compression strength and shear strength of a light weight structure.
Description
Technical field
The present invention relates to the light structures field, specifically refer to a kind of imitative east predacious diving beetle elytrum plate and preparation method thereof.
Background technology
The develop rapidly of new high-tech industry in recent years is to demands for higher performance such as the ratio of strength to weight of material, firm anharmonic ratio, anti-damages; The anti-damage of high-strength light is the target that track traffic, automobile boats and ships and aerospace material and structure development are pursued always.Lightweight for energy conservation with reduce environmental pollution significance arranged.Adopting light alloy material, light structures is the light-weighted main path of implementation structure.The former is as titanium alloy, aluminium alloy, magnesium alloy etc., but the permission operating temperature of these materials is lower, and room for promotion is limited; The latter such as honeycomb, folded structure, foam metal, fibre reinforced composites etc., the range of choice of Available Material is wider, and intensity, rigidity, heat transfer, material topology etc. all can change, but the manufacturing process complexity.
Aspect light structures design and preparation, retrieve patent situation in recent years at present, US Patent No. patent7738691 has described a kind of Parameters design and step of imitative shell light structures, but preparation method and the material of biomimetic features are not discussed; US Patent No. patent7255916 has proposed the layered metal structural material that a kind of basalt fibre strengthens, and can be used for aircraft industry, and its main advantage is anti-damage; US Patent No. patent7285326 has described a kind of method for designing of longitudinal and transverse truss reinforcement gusset of airframe exterior skin inner surface, when realizing the integral body loss of weight, can also stop further expanding of fatigue crack; US Patent No. patent7255738 has described a kind of preparation method who is mingled with the light cement composite of foam of polymers particle, particle external surface lining dispersant, thereby the particle aggregation that stops electrostatic attraction to produce.Honeycomb is a kind of light structures that is most widely used, domestic patent aspect light structures mainly concentrates on improvement design and the preparation method to existing cellular board, for example Chinese patent CN201080052562.0 has described a kind of honeycomb core based on carbon fiber paper, this honeycomb core is made by the carbon fiber floccule paper wood that comprises 20-85% weight, and carbon fiber has noncircular cross section the ratio of width to height of at least 1.5: 1.Paper wood has at least 35% fiber volume fraction.Patent CN03116503.6 and patent CN201210119212.2 have proposed the reinforcement mode of two kinds of different honeycombs respectively.The polygonal gird of patent CN03116503.6 is characterised in that along cell walls intersection and is provided with reinforcing prop.This structure can reduce stress effectively to be concentrated, and improves the peel strength of compression strength, anti-twist intensity and upper strata or lower floor's interlayer greatly; The honeycomb that patent CN201210119212.2 describes has the hexagonal cells lattice that surrounded by the next door and the tubular periphery wall that covers honeycomb.The next door has limit portion and intersection point.Six limit portions form the hexagonal cells lattice.In addition, patent CN201110209742.1 has proposed the two-sided honeycomb of a kind of Chinese fiber crops, belongs to the weaving face fabric field; CN201080016249.1 described a kind of can be by compacted form to the cellular board that launches formal expansion, CN201210273562.4 has proposed a kind of vacuum composite honeycomb board production technology.To sum up, the subject matter of lighting structure existence at present comprises following several respects: 1. structural material needs further lightweight, as replacing metal material fully with nonmetallic materials; 2. the faying face intensity of core and upper and lower panel a little less than, as the cellular board of present extensive use, cellular-core is equivalent to line with upper and lower panel and contacts, linking intensity a little less than; 3. the specific strength of structural material and specific modulus need further to improve.Adopt fibre reinforced composites, and realize continuity and the variation laying of fiber, help when alleviating construction weight, improve the mechanical property of structural material.But present widely used cellular board common used material still is aluminium honeycomb or composite, and namely upper and lower panel is carbon/epoxy composite material, and core body still is aluminum honeycomb material.As seen, lighting structure presses for the theory of source wound at the geometrical configuration design aspect.
Summary of the invention
The object of the invention is to provide a kind of enhancing loss of weight that is applicable to the industrial products structure, based on imitative east predacious diving beetle elytrum thistle board of resin-based carbon fiber composite and preparation method thereof.
Light structures of the present invention is a kind of imitative east predacious diving beetle elytrum plate, comprise top panel, lower panel and cavity central layer, the cavity central layer comprises corrugated plating and following corrugated plating, it is bonding wherein to go up corrugated plating and following corrugated plating symmetry, form some waist shape envelope cavitys, also be nested with waist core pipe in the waist shape envelope cavity.Being the face contact between waist core pipe, last corrugated plating and the top panel, is the face contact between waist core pipe, following corrugated plating and the lower panel.Top panel, last corrugated plating and following corrugated plating, lower panel are the thin plate of some layers of resin-based carbon fiber prepreg cloth molded curing moulding, and above-mentioned waist core pipe is the hollow core pipe of some layers of resin-based carbon fiber prepreg cloth molded curing moulding.Fiber distribution mode and the fiber number of plies can be optimized according to practical application.
The preparation method of a kind of imitative east of the present invention predacious diving beetle elytrum plate, it is characterized in that comprising following process: step 1, the carbon fibre initial rinse fabric of some layers of longitude and latitude lamination is wrapped on the core tube core mould, utilize the die cavity of core pipe mold to compress moulding, form waist core pipe after being heating and curing, take out core tube core mould then; Its SMIS tube core mould comprises core pipe left side core, core pipe core mould, the right core of core pipe, core tube core mould also comprises the attachment pegs that connects for core pipe left side core, core pipe core mould, the right core of core pipe, core tube core mould also comprises for core pipe left side core, core pipe core mould, the right core of core pipe is positioned first alignment pin on the core pipe mold; Its SMIS pipe mold is made up of core pipe mold and core pipe bed die; Step 2, with some layers down carbon fiber prepreg cloth, waist core pipe, some layers go up carbon fiber prepreg cloth and be tiled in successively in the corrugated plating mould, by the moulding of binding agent co-curing, form the cavity central layer of being formed by last corrugated plating, waist core pipe and following corrugated plating; Above-mentioned corrugated plating mould comprises top board, corrugated plating mold, corrugated plating bed die, lower platen, and corrugated plating mold and corrugated plating bed die are positioned second alignment pin and block in top board and the lower platen;
A kind of imitative east of the present invention predacious diving beetle elytrum plate, it is characterized in that: top panel (1) and lower panel (5) are curved slab or flat board.
The present invention has compared following advantage with existing lightweight structural material:
1. imitative east of the present invention predacious diving beetle elytrum plate is a kind of stratiform composite light-weight scutum with cavity, hole.Wherein, be the face contact between waist core pipe, last corrugated plating and the top panel, be the face contact between waist core pipe, following corrugated plating and the lower panel.The contact of this face can effectively improve bond strength between the interface by the connection area that increases the interface;
2. imitative east of the present invention predacious diving beetle elytrum plate, material selection resin-based carbon fiber prepreg cloth has further been realized the lightweight of structural material.Simultaneously, last corrugated plating and following corrugated plating fiber continuous distributed have effectively improved tension, shearing resistance and the peel strength of structure; The fleece-laying mode of each layer can be improved design accordingly according to actual stand under load situation, with the raising of implementation structure part or whole mechanical property, has avoided the employing local material to pile up, and namely increases the shortcoming that construction weight improves structural strength;
3. the core pipe of imitative east of the present invention predacious diving beetle elytrum plate separates combination mold core because core tube core mould adopts when being heating and curing, and the space between core rod provides the deformation space after core rod is heated, and has reduced the pressure in the die cavity, has effectively avoided the distortion of core pipe; Simultaneously, the core pipe adopts when the demoulding and divides modeling method, guarantees that core pipe demoulding rear surface is smooth smooth, does not have obvious lapping defect;
4. imitative east of the present invention predacious diving beetle elytrum plate top panel, lower panel can be designed to have as the beetle elytrum panel of certain curvature, can further improve compressive property and the non-deformability of structure like this.
Light structures has development space very widely at the geometrical configuration design aspect.The present invention is from bionic angle, take a hint by the research to east predacious diving beetle elytrum section microstructure, based on resin-based carbon fiber composite, design, prepared a kind of multi-layer fiber continuous circular cavity structure, be applied to the core body part of sandwich structure, structural strength is improved greatly, simultaneously can also be by changing resistance to compression, the shearing resistance mechanical property that core pipe or corrugated plating fiber distribution mode further strengthen structure, to improve the adaptability of structure.In addition, because the existence of cavity, hole, structure also has certain heat insulation, heat sinking function.
The core body of above-mentioned bionical thistle board is the nested structure of a kind of corrugated plating and core pipe, has good resistance to compression, shearing resistance and anti-twist intensity.Described structure is the lightweight structural material of a kind of high specific strength and high specific stiffness, has a wide range of applications at high-technology fields such as track traffic, automobile boats and ships and Aero-Space.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structural fibers distribution schematic diagram of the embodiment of the invention;
Fig. 3 is the preparation core pipe mold structural representation of the embodiment of the invention;
Fig. 4 is the preparation corrugated plating core body mould structure schematic diagram of the embodiment of the invention;
The imitative east predacious diving beetle elytrum plate structure of Fig. 5 and physical dimension;
Fig. 6 contrasts with aluminum honeycomb panel structure and physical dimension;
The number in the figure title: 1. top panel, 2. go up corrugated plating, 3. waist core pipe 4. plays corrugated plating, 5. lower panel, 6. attachment pegs, 7. first alignment pin, 8. core pipe mold, 9. core pipe bed die, the 10. right core of core pipe, 11. core pipe core moulds, 12. core pipe left side core, 13. lower platens, 14. blocks, 15. second alignment pin, 16. top boards, 17. corrugated plating molds, 18. lamination prepreg cloth, 19. core tube core moulds, 20. corrugated plating bed dies
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail, this example is a kind of imitative east predacious diving beetle elytrum plate, and the fiber distribution mode schematic diagram of schematic diagram and structure is respectively as Fig. 1, Fig. 2.This light structures is made up of panel and cavity core body, the core pipe cavity shape of five layers of carbon fiber prepreg cloth composition is to be made of four sections symmetrical arc surfaces and two sections bonding planes, the core pipe outside is the corrugated plating of three layers of carbon fiber that each core pipe is combined, its fiber distribution mode and size such as Fig. 2, "-" expression fiber is along circumferentially distributing among the figure, and the vertical paper of " * " expression fiber is laid.Fiber is the layings that are interspersed of 0 °, 90 ° longitudes and latitudes.
In the above-described embodiments, raw material selection epoxy resin base carbon fiber prepreg cloth, existing as follows to preparation flow and mould specification:
Its preparation process comprises manual shop layer, and compression molding and co-curing glued joint steps such as shaping.Concrete, preparation process mainly was divided into for three steps: 1. at first make the carbon fiber core pipe, as Fig. 3, the preimpregnation cloth of three layers of longitude and latitude lamination is wrapped on the core rod, the die cavity by mould compresses moulding, after being heating and curing, takes out the carbon fiber core pipe; 2. making fiber continuous circular cavity structure core body, as formation die core, with stacked good prepreg cloth, is that corrugated plating and carbon fiber core pipe are heating and curing together by mould molding with the carbon fiber pipe for preparing, obtains core after the demoulding; 3. core body and the moulding of prepreg panel co-curing.
The mould design mainly comprises core pipe mold and central layer mould: 1) core pipe mold structural design.Structural representation such as Fig. 3, core are divided into core pipe left side core 12, core pipe core mould 11, right core 10 3 parts of core pipe; Guarantee core pipe internal surface shape by attachment pegs 6 between the core, guarantee the position of core pipe in mold cavity by alignment pin 7.2) core body mould structure design.Structural representation such as Fig. 4, corrugated plating adopt a cover assembling die moulding, comprise corrugated plating mold 17 and corrugated plating bed die 20, adopt alignment pin 15 and block 14 location between the assembling die.
The fiber distribution mode also not only is confined to embodiment in the predacious diving beetle elytrum plate of imitative east of the present invention, can adjust at aspects such as the fiber number of plies and fiber winding, the modes that is interspersed according to the actual loading situation.The preparation technology of biomimetic features also can adjust accordingly according to quantity size, cuts out or fiber automatic placement Wiring apparatus etc. as selecting prepreg cloth.
In the embodiment of the invention, the porosity of structure is 70%, and proportion is 0.43.The imitative east of preparation predacious diving beetle elytrum plate sample, size as shown in Figure 5.Among the figure, dimensional parameters B=26mm, W=25mm, H=9.3mm, t=0.13mm, R=4mm, θ=75 °, L=2.04mm, D=2mm.Carry out the quasistatic compression experiment by universal testing machine (Changchun Inst of Testing Machine, DNS series), obtain structure and be subjected to the compressive load of vertical panel to do the time spent, its flat compressed specific strength is 20.8Mpa/(gcm
-3), specific modulus is 6.5Mpa/(gcm
-3).The size of the aluminium honeycomb of same porosity (panel is carbon/epoxy composite material) as shown in Figure 6, map parameter is B '=7.44mm, W '=8.6mm, L '=2.48mm, H '=4.96mm, t '=0.12mm.Axial compression ratio intensity is 289Mpa/(gcm along the core hole to adopt finite element method analysis must imitate east predacious diving beetle elytrum plate
-3), specific modulus is 425.5Mpa/(gcm
-3), be respectively above-mentioned aluminum honeycomb panel flat compressed specific strength and specific modulus 8.3 times and 6.2 times.
Claims (4)
1. an imitative east predacious diving beetle elytrum plate comprises top panel (1), lower panel (5) and cavity central layer, it is characterized in that:
Above-mentioned cavity central layer comprises corrugated plating (2) and following corrugated plating (4), and it is bonding wherein to go up corrugated plating and following corrugated plating symmetry, forms some waist shape envelope cavitys, also is nested with waist core pipe (3) in the waist shape envelope cavity;
Being the face contact between above-mentioned waist core pipe (3), last corrugated plating (2) and the top panel (1), is the face contact between waist core pipe (3), following corrugated plating (4) and the lower panel (5);
Above-mentioned top panel (1), last corrugated plating (2), following corrugated plating (4), lower panel (5) are the thin plate of some layers of resin-based carbon fiber prepreg cloth molded curing moulding, and above-mentioned waist core pipe (3) is the hollow core pipe of some layers of resin-based carbon fiber prepreg cloth molded curing moulding.
2. a kind of imitative elytrum plate according to claim 1 is characterized in that: above-mentioned top panel (1), go up corrugated plating (2), waist core pipe (3), corrugated plating (4) down, lower panel (5) is by the moulding of binding agent co-curing.
3. a kind of imitative east according to claim 1 predacious diving beetle elytrum plate, it is characterized in that: top panel (1) and lower panel (5) are curved slab or flat board.
4. the preparation method of the described imitative east of claim 1 predacious diving beetle elytrum plate is characterized in that comprising following process:
Step 1, the carbon fibre initial rinse fabric of some layers of longitude and latitude lamination is wrapped on the core tube core mould, utilizes the die cavity of core pipe mold to compress moulding, the back that is heating and curing forms waist core pipe (3), takes out core tube core mould then; Its SMIS tube core mould comprises core pipe left side core (12), core pipe core mould (11), the right core (10) of core pipe, core tube core mould also comprises the attachment pegs (6) that connects for core pipe left side core (12), core pipe core mould (11), the right core of core pipe (10), and core tube core mould also comprises for core pipe left side core (12), core pipe core mould (11), the right core of core pipe (10) are positioned first alignment pin (7) on the core pipe mold; Its SMIS pipe mold is made up of core pipe mold (8) and core pipe bed die (9);
Step 2, carbon fiber prepreg cloth, waist core pipe (3), some layers are gone up the carbon fiber prepreg cloth and are tiled in successively in the corrugated plating mould down with some layers, by the moulding of binding agent co-curing, form the cavity central layer of being formed by last corrugated plating (2), waist core pipe (3) and following corrugated plating (4); Above-mentioned corrugated plating mould comprises top board (16), corrugated plating mold (17), corrugated plating bed die (20), lower platen (13), and corrugated plating mold (17) and corrugated plating bed die (20) are positioned second alignment pin (15) and block (14) in top board (16) and the lower platen (13);
Step 3, with lower panel (5) the co-curing moulding of cavity central layer and the top panel (1) of the bonding formation of some layers of resin-based carbon fiber prepreg cloth, the bonding formation of some layers of resin-based carbon fiber prepreg cloth.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986625A (en) * | 2015-02-05 | 2016-10-05 | 郭书祥 | Multifunctional heat preservation sheet and erecting structure |
| CN107813557A (en) * | 2017-09-28 | 2018-03-20 | 安徽工业大学 | A kind of laser welding ellipse hollow type steel sandwich boards and welding method |
| CN107962099A (en) * | 2017-11-21 | 2018-04-27 | 航天材料及工艺研究所 | A kind of four layers of thin-walled grid accessory and its superplastic forming/diffusion connection method containing entity structure |
| CN108484198A (en) * | 2018-04-03 | 2018-09-04 | 湖南南方搏云新材料股份有限公司 | A kind of preparation method of carbon/carbon composite cored slab |
| CN113085216A (en) * | 2021-03-24 | 2021-07-09 | 哈尔滨工程大学 | Fiber tube periodic positive and negative Poisson's ratio sandwich structure and preparation method thereof |
| CN113353111A (en) * | 2021-08-06 | 2021-09-07 | 四川大学 | Floor section structure of rack motor train unit, floor structure and rack motor train unit |
| CN113415414A (en) * | 2021-08-04 | 2021-09-21 | 中山大学 | Ladybug coleoptera coupling mechanism bionic damping device, unmanned aerial vehicle undercarriage and unmanned aerial vehicle |
| CN113427797A (en) * | 2021-06-23 | 2021-09-24 | 吉林大学 | Forming process of composite B column based on bionic structure of Coleoptera carinicauda of Oriental Trigonella |
| CN114211774A (en) * | 2021-11-30 | 2022-03-22 | 哈尔滨工程大学 | Composite material corrugated plate-pipe negative Poisson's ratio structure based on hot die pressing molding process and preparation method |
| CN114619610A (en) * | 2022-03-22 | 2022-06-14 | 河南金铨塑业有限公司 | Production process of glass fiber reinforced plastic pipe fitting |
| CN115504804A (en) * | 2022-10-18 | 2022-12-23 | 中国科学院金属研究所 | Method for manufacturing SiOC porous heat insulation structure through continuous additive manufacturing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1539632A (en) * | 2003-04-21 | 2004-10-27 | 陈锦祥 | Strengthened structure of interlayer with polygonal grid in middle |
| US20070112522A1 (en) * | 2003-11-30 | 2007-05-17 | Christian Hamm-Dubischar | Method of determining structural prototype data for a technical lightweight structure |
| CN102387914A (en) * | 2009-04-16 | 2012-03-21 | 埃尔塞乐公司 | Cellular panel |
-
2013
- 2013-05-16 CN CN201310186604.5A patent/CN103252929B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1539632A (en) * | 2003-04-21 | 2004-10-27 | 陈锦祥 | Strengthened structure of interlayer with polygonal grid in middle |
| US20070112522A1 (en) * | 2003-11-30 | 2007-05-17 | Christian Hamm-Dubischar | Method of determining structural prototype data for a technical lightweight structure |
| CN102387914A (en) * | 2009-04-16 | 2012-03-21 | 埃尔塞乐公司 | Cellular panel |
Non-Patent Citations (3)
| Title |
|---|
| GUO CE等: "Structural design inspired by beetle elytra and its mechanical properties", 《MECHANICAL ENGINEERING》 * |
| 李正官等: "仿生吸能结构的设计及耐撞性研究", 《信息技术》 * |
| 陈锦祥等: "《甲虫前翅结构及其仿生研究进展》", 《复合材料学报》 * |
Cited By (15)
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|---|---|---|---|---|
| CN105986625A (en) * | 2015-02-05 | 2016-10-05 | 郭书祥 | Multifunctional heat preservation sheet and erecting structure |
| CN105986625B (en) * | 2015-02-05 | 2018-05-25 | 郭书祥 | Multifunctional heat insulating piece and erecting structure |
| CN107813557A (en) * | 2017-09-28 | 2018-03-20 | 安徽工业大学 | A kind of laser welding ellipse hollow type steel sandwich boards and welding method |
| CN107962099A (en) * | 2017-11-21 | 2018-04-27 | 航天材料及工艺研究所 | A kind of four layers of thin-walled grid accessory and its superplastic forming/diffusion connection method containing entity structure |
| CN107962099B (en) * | 2017-11-21 | 2019-04-30 | 航天材料及工艺研究所 | A kind of four containing entity structure layer thin-walled grid accessory and its superplastic forming/diffusion connection method |
| CN108484198A (en) * | 2018-04-03 | 2018-09-04 | 湖南南方搏云新材料股份有限公司 | A kind of preparation method of carbon/carbon composite cored slab |
| CN113085216A (en) * | 2021-03-24 | 2021-07-09 | 哈尔滨工程大学 | Fiber tube periodic positive and negative Poisson's ratio sandwich structure and preparation method thereof |
| CN113427797A (en) * | 2021-06-23 | 2021-09-24 | 吉林大学 | Forming process of composite B column based on bionic structure of Coleoptera carinicauda of Oriental Trigonella |
| CN113415414A (en) * | 2021-08-04 | 2021-09-21 | 中山大学 | Ladybug coleoptera coupling mechanism bionic damping device, unmanned aerial vehicle undercarriage and unmanned aerial vehicle |
| CN113415414B (en) * | 2021-08-04 | 2023-11-24 | 中山大学 | Bionic damping device for ladybug and coleoptera coupling mechanism, landing gear of unmanned aerial vehicle and unmanned aerial vehicle |
| CN113353111A (en) * | 2021-08-06 | 2021-09-07 | 四川大学 | Floor section structure of rack motor train unit, floor structure and rack motor train unit |
| CN113353111B (en) * | 2021-08-06 | 2021-10-29 | 四川大学 | Floor section structure of rack motor train unit, floor structure and rack motor train unit |
| CN114211774A (en) * | 2021-11-30 | 2022-03-22 | 哈尔滨工程大学 | Composite material corrugated plate-pipe negative Poisson's ratio structure based on hot die pressing molding process and preparation method |
| CN114619610A (en) * | 2022-03-22 | 2022-06-14 | 河南金铨塑业有限公司 | Production process of glass fiber reinforced plastic pipe fitting |
| CN115504804A (en) * | 2022-10-18 | 2022-12-23 | 中国科学院金属研究所 | Method for manufacturing SiOC porous heat insulation structure through continuous additive manufacturing |
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| CN103252929B (en) | 2015-05-06 |
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