CN105383142A - Motor train unit aramid fiber honeycomb in-built part forming process - Google Patents
Motor train unit aramid fiber honeycomb in-built part forming process Download PDFInfo
- Publication number
- CN105383142A CN105383142A CN201510772899.3A CN201510772899A CN105383142A CN 105383142 A CN105383142 A CN 105383142A CN 201510772899 A CN201510772899 A CN 201510772899A CN 105383142 A CN105383142 A CN 105383142A
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- China
- Prior art keywords
- honeycomb
- aramid fiber
- time
- prepreg
- built
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Classifications
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- 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
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- 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
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a motor train unit aramid fiber honeycomb in-built part forming process. A panel is prepared from phenolic resin or cyanic acid prepreg; a middle core material is prepared from aramid fiber honeycomb; phenolic resin glass fiber foam felt is placed between the honeycomb and prepreg at corners; two layers of the prepreg are respectively paved on the upper and lower surfaces of the honeycomb; phenolic resin glass fibre foam felt is placed between the honeycomb and prepreg; blank combined by the materials is wrapped by an isolating membrane and then the wrapped blank is put onto a mould for press forming. The in-built part is light in quality, small in density and convenient to dismount, exchange and repair; the fireproofing and smoke prevention performance can reach the M1F1 grade of France NF16101, and accords with UIC564-2 standard; the production efficiency is improved greatly and the part size is accurate.
Description
Technical field
The present invention relates to a kind of EMUs built-in fitting forming technology, especially relate to a kind of aramid fiber honeycomb built-in fitting forming technology.
Background technology
At present, common rail vehicle built-in fitting uses traditional material as glued board, fiberglass, aluminium-plastic panel, engineering plastics etc.EMU is in-built not only requires some strength and lighter weight, and has and good certainly put out fire-protection rating, meets the requirement in vehicle fire-protection standard, also requires to have good resilience, Absorbable rod vibrational energy, have sound insulation and fall hot-tempered effect.CRH5 vehicle is in-built uses advanced light composite aramid fiber cellular material first, aramid fiber cellular material is in the past for the manufacture of aircraft tail and wing, its formed machining technique generally adopts autoclave, heating furnace vacuum bag forming technology, technology investment is huge, production efficiency is low, be not suitable for vehicular field produces needs in enormous quantities, and therefore exploitation low-pressure low-temperature fast shaping technology is very necessary.
Summary of the invention
The object of this invention is to provide the process of a kind of special cellular composite material combination of materials and hot forming thereof, produce the vehicle built-in fitting of high-strength light.By combining different materials: select the material composition ply angles composites such as low pressure prepreg, high-strength low-density aramid paper honeycomb, reinforcing fiber mats, each material advantage is combined; By increasing packing material laying, solving paper honeycomb and collapsing in pressing process medial end portions lead angle place honeycomb pressure, rounding off angle problem can not be formed; By determining these materials fast shaping technology under low condition requirement, meet EMUs vehicle interior part batch production demand.
For achieving the above object, the invention provides a kind of EMUs aramid fiber honeycomb built-in fitting forming technology, it is characterized in that comprising the following steps:
(1) Material selec-tion: panel selects phenolic resins or cyanic acid class prepreg, and aramid fiber cellular board selected by middle core, edge places phenolic resins glass fibre foam felt between honeycomb and prepreg;
(2) material laying: at the two-layer prepreg of each lay of honeycomb upper and lower surface; Phenolic resins glass fibre foam felt is placed between honeycomb and prepreg; And wrap above-mentioned material combination blank together with barrier film and be laid on mould;
(3) compressing.
Described phenolic resins or cyanic acid class prepreg require: solidification temperature 130-145 DEG C, solidifying pressure be not less than 0.1MPa, hardening time 30-45min, temperature rise rate is 2-5K/min, resin content is 40-50%, weight 500-1000g/m
2.
Described aramid fiber cellular board thickness is 6-20mm, hole lattice regular hexagon, aperture 4.8 ± 10%mm, density 48 ± 10%kg/m
3.
Described phenolic resins glass fibre foam felt weight is 300-400g/m
2.
Described block pressing forming process design temperature is platen temperature 135-145 DEG C, and press downstream rate in mould is closed requires that the press time divides 4 execution for 7-15mm/s, first time press time 50-70S; Second time press time 60-180S; Third time press time 60-180S; 4th press time 1500-2400S; Each compacting rear mold lifts 1-2mm, deflation time 1-5S, and carry out micro-lifting in compacting and exit 3-4 time, compacting 30-45min, the compressing rear demoulding enters next procedure.
The advantage that the present invention has relative to prior art is as follows with progress:
1) adopt the compound built-in fitting quality of aramid paper honeycomb, phenolic aldehyde prepreg compacting light, density is little, and honeycomb unit weight is only 48 kilograms every cubic metre; Other built-in fitting weight comparing same specification reduces 50-70%, and dismounting repair is convenient;
2) fire-proof smoke-proof performance: the M1F1 rank reaching French NF 16101, meets UIC564-2 standard;
3) production efficiency significantly promotes, as each press split run of side wall luffer boards can produce 8-12 part product; Minimizing personnel, mould, place, equipment investment compared with autoclave technique; The 5-10 that enhances productivity doubly;
4) product product is formed by metal die mold pressing, and part dimension is accurate;
5) surfacing is smooth, without honeycomb impression; For sequent surface application reduces surface finish workload;
6) end can form the lead angle of R6-10, and can carry out three-dimensional;
7) solve honeycomb built-in fitting when having a back of the body lamp, produce printing opacity problem.
Accompanying drawing explanation
Fig. 1 is heat pressing process schematic diagram;
Fig. 2 is edge lead angle place cut-away view.
Piece number 1 is hot press power-on and power-off heating heat conduction pressing plate; Piece number 2 is metal pair mould mould; Piece number 3 is two layers of glass fibre prepreg; Piece number 4 aramid fiber honeycomb; Piece number 5 is phenolic glass fiber foam felt.
Detailed description of the invention
Embodiment 1
Side wall luffer boards heat pressure forming process is as follows:
By shown in Fig. 1, laying preparation and compacting are carried out to material:
1) cutting thickness is the aramid fiber comb core (ECA-I-4.8-48) of 10mm;
2) one deck phenolic resins glass fibre foam felt COMPOLET400-100-4.5 is respectively put up and down at cellular board;
3) above, two-layer phenolic aldehyde prepreg PF807 is respectively put on two surfaces up and down of ready-made plank; Weight 500g/m
2, resin content (weight) 40%,
4) the good laying of compound is wrapped with barrier film;
5) hot pressing: ready-made sandwich boards blank is correctly placed in hot press, the thickness pad between adjustment mould, makes the little 0.2mm of Thickness Ratio product nominal thickness between mould; Design temperature is press die temperature is 135 DEG C, and pressing plate pressure is 0.4MPa; Then hot pressing is carried out according to clamping cycle, first time press time 60S; Second time press time 120S; Third time press time 180S; 4th press time 2400S; Each compacting rear mold lifts 1mm, deflation time 1S, carries out micro-ly lifting venting 3 times in compacting, and compacting 45min, the compressing rear demoulding enters next procedure.
Embodiment 2
Luggage carrier arc heat pressure forming process is as follows:
1) cutting thickness is the aramid fiber comb core (ECA-I-4.8-48) of 6mm;
2) one deck phenolic resins glass fibre foam felt COMPOLET400-100-4.5 is respectively put up and down at cellular board;
3) above, two-layer cyanic acid prepreg PN900 is respectively put on two surfaces up and down of ready-made plank; Weight 600g/m
2, resin content (weight) 50%;
4) the good laying of compound is wrapped with barrier film;
5) hot pressing: ready-made sandwich boards blank is correctly placed in hot press, the thickness pad between adjustment mould, makes Thickness Ratio product nominal thickness between mould be less than 0.1mm; Design temperature is press die temperature is 135 DEG C, and pressing plate pressure is 0.1MPa; Then hot pressing is carried out according to clamping cycle, first time press time 50S; Second time press time 60S; Third time press time 120S; 4th press time 1500S; Each compacting rear mold lifts 1mm, deflation time 1S, carries out micro-ly lifting venting 3 times in compacting, compacting 30min, and the compressing rear demoulding enters next procedure; Produce brace edge be the rounding off angle of R=6mm as shown in Figure 2.
Embodiment 3
Luggage carrier supporting plate heat pressure forming process is as follows:
1) cutting thickness is the aramid fiber comb core (ECA-I-4.8-48) of 15mm;
2) one deck phenolic resins glass fibre foam felt COMPOLET400-100-4.5 is respectively put up and down at cellular board;
3) above, two-layer prepreg is respectively put on two surfaces up and down of ready-made plank; PF807 weight 500g/m
2, resin content (weight) 40%,
4) the good laying of compound is wrapped with barrier film;
5) hot pressing: ready-made sandwich boards blank is correctly placed in hot press; Design temperature is press die temperature is 145 DEG C, and pressing plate pressure is 1.0MPa; Then hot pressing is carried out according to clamping cycle, first time press time 70S; Second time press time 180S; Third time press time 60S; 4th press time 1800S; Each compacting rear mold lifts 1mm, deflation time 1S, carries out micro-ly lifting venting 3 times in compacting, and compacting 30min, the compressing rear demoulding enters next procedure.
Claims (5)
1. an EMUs aramid fiber honeycomb built-in fitting forming technology, is characterized in that comprising the following steps:
(1) Material selec-tion: panel selects phenolic resins or cyanic acid class prepreg, and aramid fiber cellular board selected by middle core, edge places phenolic resins glass fibre foam felt between honeycomb and prepreg;
(2) material laying: at the two-layer prepreg of each lay of honeycomb upper and lower surface; Phenolic resins glass fibre foam felt is placed between honeycomb and prepreg; And wrap above-mentioned material combination blank together with barrier film and be laid on mould;
(3) compressing.
2. EMUs aramid fiber honeycomb built-in fitting forming technology according to claim 1, is characterized in that: phenolic resins or cyanic acid class prepreg require be: solidification temperature 130-145 DEG C, solidifying pressure be not less than 0.1MPa, hardening time 30-45min, temperature rise rate is 2-5K/min, resin content is 40-50%, weight 500-1000g/m
2.
3. EMUs aramid fiber honeycomb built-in fitting forming technology according to claim 1, is characterized in that: aramid fiber cellular board thickness is 6-20mm, hole lattice regular hexagon, aperture 4.8 ± 10%mm, density 48 ± 10%kg/m
3.
4. EMUs aramid fiber honeycomb built-in fitting forming technology according to claim 1, is characterized in that: phenolic resins glass fibre foam felt weight is 300-400g/m
2.
5. EMUs aramid fiber honeycomb built-in fitting forming technology according to claim 1, it is characterized in that: block pressing forming process design temperature is platen temperature 135-145 DEG C, press downstream rate in mould is closed requires as 7-15mm/s, press time divides 4 execution, first time press time 50-70S; Second time press time 60-180S; Third time press time 60-180S; 4th press time 1500-2400S; Each compacting rear mold lifts 1-2mm, deflation time 1-5S, and carry out micro-lifting in compacting and exit 3-4 time, compacting 30-45min, the compressing rear demoulding enters next procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772899.3A CN105383142A (en) | 2015-11-13 | 2015-11-13 | Motor train unit aramid fiber honeycomb in-built part forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772899.3A CN105383142A (en) | 2015-11-13 | 2015-11-13 | Motor train unit aramid fiber honeycomb in-built part forming process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105383142A true CN105383142A (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510772899.3A Pending CN105383142A (en) | 2015-11-13 | 2015-11-13 | Motor train unit aramid fiber honeycomb in-built part forming process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107933590A (en) * | 2017-11-27 | 2018-04-20 | 株洲时代新材料科技股份有限公司 | A kind of honeycomb sandwich structure skirtboard and preparation method thereof |
| CN109016708A (en) * | 2018-08-02 | 2018-12-18 | 株洲时代新材料科技股份有限公司 | A kind of skirt plate of railway vehicle |
| CN109304875A (en) * | 2018-09-26 | 2019-02-05 | 株洲电力机车广缘科技有限责任公司 | Top plate and preparation method thereof in rail traffic vehicles aramid fiber honeycomb |
| CN114072280A (en) * | 2019-06-28 | 2022-02-18 | 井上株式会社 | Honeycomb laminate and method for producing same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199333A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Method for manufacturing advanced reinforced phenolic honeycomb core composite material |
| CN203957429U (en) * | 2014-07-31 | 2014-11-26 | 株洲时代新材料科技股份有限公司 | A kind of light composite board |
-
2015
- 2015-11-13 CN CN201510772899.3A patent/CN105383142A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199333A (en) * | 2010-03-22 | 2011-09-28 | 苏州美克思科技发展有限公司 | Method for manufacturing advanced reinforced phenolic honeycomb core composite material |
| CN203957429U (en) * | 2014-07-31 | 2014-11-26 | 株洲时代新材料科技股份有限公司 | A kind of light composite board |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107933590A (en) * | 2017-11-27 | 2018-04-20 | 株洲时代新材料科技股份有限公司 | A kind of honeycomb sandwich structure skirtboard and preparation method thereof |
| CN109016708A (en) * | 2018-08-02 | 2018-12-18 | 株洲时代新材料科技股份有限公司 | A kind of skirt plate of railway vehicle |
| CN109304875A (en) * | 2018-09-26 | 2019-02-05 | 株洲电力机车广缘科技有限责任公司 | Top plate and preparation method thereof in rail traffic vehicles aramid fiber honeycomb |
| CN109304875B (en) * | 2018-09-26 | 2020-12-11 | 株洲电力机车广缘科技有限责任公司 | Aramid fiber honeycomb middle and top plate of rail transit vehicle and preparation method thereof |
| CN114072280A (en) * | 2019-06-28 | 2022-02-18 | 井上株式会社 | Honeycomb laminate and method for producing same |
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Application publication date: 20160309 |
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