CN105563970A - Composite structure with PMI sandwich as well as preparation method and application of composite structure - Google Patents

Composite structure with PMI sandwich as well as preparation method and application of composite structure Download PDF

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Publication number
CN105563970A
CN105563970A CN201510187341.9A CN201510187341A CN105563970A CN 105563970 A CN105563970 A CN 105563970A CN 201510187341 A CN201510187341 A CN 201510187341A CN 105563970 A CN105563970 A CN 105563970A
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CN
China
Prior art keywords
resin
composite material
pmi
material structure
core
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Pending
Application number
CN201510187341.9A
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Chinese (zh)
Inventor
黄险波
陈大华
蒋新
范欣愉
卢勇
高雄
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GUANGZHOU KINGFA CARBON FIBER NEW MATERIAL DEVELOPMENT Co Ltd
Original Assignee
GUANGZHOU KINGFA CARBON FIBER NEW MATERIAL DEVELOPMENT Co Ltd
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Priority to CN201510187341.9A priority Critical patent/CN105563970A/en
Publication of CN105563970A publication Critical patent/CN105563970A/en
Pending legal-status Critical Current

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    • 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
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
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    • B32B27/285—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyethers
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Abstract

The invention discloses a composite structure with a PMI sandwich as well as a preparation method and application of the composite structure. The composite structure comprises a core material (I) and two skin layers (II) which are arranged on the upper and lower surfaces of the core material (I), wherein the skin layers are made of a resin-based fiber reinforced composite; PMI foam is adopted as the core material (I); and the relative density and the thickness of the core material (I) are 75-200 kg/m<3> and 0.4-5.0 mm respectively. The prepared composite structure has the excellent properties of being high in strength, light in weight, good in inter-layer bonding effect, low in delamination and splitting possibility, and resistant to impact, high temperature and corrosion; under the premise of the same thickness, the composite structure has the similar strength with aluminum alloy, but the weight of the composite structure is less than one quarter of that of the aluminum alloy; and the composite structure is simple in preparation process, and applicable to the 3C, household appliance, automobile, aerospace or rail transportation industry.

Description

A kind of have composite material structure of PMI sandwich and its preparation method and application
Technical field
The present invention relates to Composite Sandwich structure field, be specifically related to a kind of to there is composite material structure of PMI sandwich and its preparation method and application.
Background technology
Along with materials industry development, advanced composite material (ACM) application is more and more wider, and the fields such as Aero-Space, automobile, steamer, 3C household electric appliances are all in application.But along with the development of technology, more and more higher to the requirement of advanced composite material (ACM), conventional composite more and more can not meet the demand of people.Existing known light wood core, honeycomb core or Polyurethane Foam Core etc. can not be high temperature resistant, do not possess again excellent mechanical property, are therefore badly in need of wanting a kind of novel sandwich material to occur.
The patent No. is 200580029564.7 disclose a kind of sandwich structural body, this sandwich structural body (III) by core (I) and be configured in this core (I) two sides, the fiber-reinforced material (II) that is made up of continuous reinforcement fiber (A) and matrix resin (B) forms, wherein said core (I) has gap structure, described space is formed by the bubble of foaming body, or core is made up of discontinuous reinforcing fiber and thermoplastic resin, the space that described space is formed by infall mutual between the long filament of this reinforcing fiber is formed.But this sandwich structural body is the carbon fibre composite sheet material adopting common resin forming to become sandwich structural body, is common fabrication scheme in the market, there is intensity low, rigidity is inadequate, and molding cycle is long, and production automation degree is low, high in cost of production problem.
The full name of PMI foam is polymethacrylimide foam, have compared with conventional foam that intensity is high, quality be light, good rigidly, Halogen, the performance such as high temperature resistant, be the closed pore Engineering Foam that performance is the most superior.
Summary of the invention
The object of the present invention is to provide that a kind of intensity is high, quality is light, interlaminar bonding is good, not easily delamination division, the premium properties such as shock-resistant, high temperature resistant, corrosion-resistant the composite material structure with PMI sandwich.
Another object of the present invention is to provide the above-mentioned preparation method with the composite material structure of PMI sandwich.
Another object of the present invention is to provide the above-mentioned application with the composite material structure of PMI sandwich.
The present invention is achieved through the following technical solutions:
A kind of composite material structure with PMI sandwich, comprise core (I) and be configured in the skinning layer (II) of this core (I) upper and lower surface, described skinning layer is made up of resin base fiber reinforced composite material, described core (I) is PMI foam, and the proportion of described core (I) is 75kg/m 3~ 200kg/m 3, thickness is 0.4mm ~ 5.0mm.
It is>=80MPa that the elastic modelling quantity of described PMI foam is tested according to ASTMD638, and modulus of shearing is>=25MPa according to ASTMD638 test, and shear strength is>=1.2MPa according to ASTMD638 test; Proportion is preferably 110kg/m 3~ 150kg/m 3, thickness is preferably 0.6mm ~ 1.2mm.
Preferably, the resin matrix in described skinning layer (II) can be thermosetting resin, is specifically preferably one or more in epoxy resin, phenolic resins, epoxy phenolics, unsaturated polyester resin or polyurethane resin; Fibre reinforcement in described skinning layer (II) is one or more in carbon fiber, glass fibre, basalt fibre or aramid fiber, and wherein the content of resin matrix is 30wt% ~ 45wt%, and preferred content is 35wt% ~ 40wt%.When the resin matrix in skinning layer (II) is thermosetting resin, preparation transition glued membrane tack coat (III) in the middle of core (I) and skinning layer (II).Described transition glued membrane tack coat (III) is made up of resin glued membrane or resin-based fibre reinforced materials, and thickness is 0.02mm ~ 2.0mm, and proportion is 0.9g/cm 3~ 1.3g/cm 3.
Described resin glued membrane is made up of one or more in epoxy resin, phenolic resins, epoxy phenolics, unsaturated polyester resin or polyurethane resin; Resin matrix in described resin-based fibre reinforced materials is one or more in epoxy resin, phenolic resins, epoxy phenolics, unsaturated polyester resin or polyurethane resin, and wherein the content of resin matrix is 35wt% ~ 70wt%;
Fibre reinforced materials can be one or more in continuous print carbon fiber, glass fibre, basalt fibre or aramid fiber, and have tiling or woven cloth fiber appearance structure continuously, wherein, the specification of glass fiber woven cloth is 25gsm ~ 300gsm.Fibre reinforced materials can also for discontinuous size be greater than in carbon fiber, glass fibre, basalt fibre or the aramid fiber that short fiber that the long fibre of 2mm or size be less than 2mm forms one or more, described resin matrix and discontinuous fibre intersect to form gap structure after infiltrating mutually.
The preparation method of the transition glued membrane tack coat (III) be made up of resin-based fibre reinforced materials is by being covered in by thermosetting resin above release liners/film, then by fibre reinforced materials uniform spreading on resin molding, by being heated to about 70 DEG C, with heating two roller bearing steel roll roll after make.
The effect of described transition glued membrane tack coat (III) mainly coordinates skinning layer (II) and core (I) as bonding agent, increases cohesive force therebetween.
Preferably, resin matrix in described skinning layer (II) can also be thermoplastic resin, one or more being preferably in polypropylene PP, polythene PE, polyamide PA, polybutylene terephthalate (PBT) PBT, PEI PEI, polycarbonate, polyether sulfone PES, polyether-ether-ketone PEEK, polyimides PI or polyamidoimide PAI concrete; Fibre reinforcement is one or more in carbon fiber, glass fibre, basalt fibre or aramid fiber, and wherein the content of resin matrix is 30wt% ~ 60wt%, and preferred content is 35wt% ~ 50wt%.
The preparation method of what the present invention was above-mentioned the have composite material structure of PMI sandwich, comprises the steps:
When the resin matrix in skinning layer (II) is thermosetting resin, its step is included in core (I) upper and lower surface and pastes transition glued membrane tack coat (III), and then skinning layer (II) is pasted on transition glued membrane tack coat (III), mode finally by mold pressing or lamination heating is shaping, the temperature of heating is between 140 DEG C ~ 180 DEG C, pressure is between 0.3MPa ~ 10MPa, and molding time is between 1min ~ 30min.Wherein, PMI foam core cuts into desired thickness by machine cuts mode; Upper and lower surface skinning layer is that thermosetting resin base fiber reinforced composite material is formed, the freezer at-18 DEG C-5 DEG C is needed to store, the composite material sheet needing size is processed into by cutting after thaw at RT, then at room temperature according to Lay up design requirement, the prepreg sheet material of the structural thickness that lamination needs; Transition glued membrane tack coat (III) is also be processed into the sheet material the same with PMI foam core size by thaw at RT and cutting; Required mould is steel or aluminium-making mould, and have certain thickness die cavity, die cavity upper and lower surface is smooth, has excellent stripping result, and stripping result is played in the effect also can with the mould release membrance of stripping result.
When the resin matrix in skinning layer (II) is thermoplastic resin, because thermoplastic resin has very high resin content and moldable surface, therefore do not need to paste transition glued membrane tack coat (III) in PMI foam core upper and lower surface, its step comprises upper and lower surface skinning layer (II) being layered in described core (I), by cooling forming after the heating of mold heated, flat heater or steel band, the temperature of heating is between 150 DEG C ~ 300 DEG C, shaping heating pressing time is 1s ~ 600s, and cool time is 1s ~ 120s.
The application of composite material structure in 3C industry, household electric appliances, automobile industry, Aero-Space or track traffic industry of what the present invention was above-mentioned have PMI sandwich.
The present invention compared with prior art, has following beneficial effect:
The composite material structure of PMI foam core that 1) prepared by the present invention has that intensity is high, quality is light, interlaminar bonding is good,
Not easily delamination division, the excellent properties such as shock-resistant, high temperature resistant, corrosion-resistant, under condition of equivalent thickness, intensity and aluminium alloy match in excellence or beauty, and weight is then less than 1/4th of aluminium alloy;
2) preparation technology of the present invention is simple, can be applicable in 3C industry, household electric appliances, automobile industry, Aero-Space or track traffic industry.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention has the composite material structure of PMI sandwich.
Detailed description of the invention
Further illustrate the present invention below by detailed description of the invention, following examples are the present invention's preferably embodiment, but embodiments of the present invention are not by the restriction of following embodiment.
The material adopted in the embodiment of the present invention and comparative example is as follows:
PMI foam: commercial.
embodiment 1:
As shown in Figure 1, a kind of composite material structure with PMI sandwich, comprises core (I), is configured in the skinning layer (II) of this core (I) upper and lower surface, and is formulated in the adhesive film (III) in the middle of core (I) and skinning layer (II).
Its preparation technology is as follows:
By PMI structural foam, (proportion is 75kg/m 3) cut into 1.0mm thickness using as core, according to ASTMD638 testing standard, the elastic modelling quantity test of core is>=80MPa, modulus of shearing>=25MPa, shear strength>=1.2MPa;
The transition glued membrane tack coat be made up of with glass fiber woven cloth (specification 50gsm) 40wt% thermosetting epoxy resin (thickness is 0.05mm) is processed into the sheet material the same with PMI size by thaw at RT and cutting, and in PMI foam upper and lower surface, this pastes transition glued membrane tack coat;
And then on transition glued membrane tack coat, paste the skinning layer be made up of epoxy resin and 35wt% carbon fiber 3K woven cloth, the last mode heated by mold pressing in steel die is shaping, the temperature of heating is 140 DEG C, pressure is 0.5MPa, molding time is 10min, must have the composite material structure of PMI sandwich.Test its property indices, the results are shown in Table 1.
embodiment 2:
By PMI structural foam, (proportion is 110kg/m 3) cut into 0.6mm thickness using as core, according to ASTMD638 testing standard, the elastic modelling quantity test of core is>=80MPa, modulus of shearing>=25MPa, shear strength>=1.2MPa;
The transition glued membrane tack coat be made up of with continuous carbon fibre 35wt% thermosetting epoxy resin (thickness is 0.05mm) is processed into the sheet material the same with PMI size by thaw at RT and cutting, and in PMI foam upper and lower surface, this pastes transition glued membrane tack coat;
And then on transition glued membrane tack coat, paste the skinning layer be made up of epoxy resin and 40wt% continuous carbon fibre, the last mode heated by mold pressing in steel die is shaping, the temperature of heating is 150 DEG C, pressure is 1.0MPa, molding time is 20min, must have the composite material structure of PMI sandwich.Test its property indices, the results are shown in Table 1.
embodiment 3:
By PMI structural foam, (proportion is 150kg/m 3) cut into 3.0mm thickness using as core, according to ASTMD638 testing standard, the elastic modelling quantity test of core is>=80MPa, modulus of shearing>=25MPa, shear strength>=1.2MPa;
To form transition glued membrane tack coat (thickness is 0.07mm) by thermosetting epoxy resin and be processed into the sheet material the same with PMI size by thaw at RT and cutting, in PMI foam upper and lower surface, this pastes transition glued membrane tack coat;
And then on transition glued membrane tack coat, paste the skinning layer be made up of epoxy resin and 30wt% basalt fibre woven cloth, the last mode heated by mold pressing in steel die is shaping, the temperature of heating is 160 DEG C, pressure is 2.0MPa, molding time is 15min, must have the composite material structure of PMI sandwich.Test its property indices, the results are shown in Table 1.
embodiment 4:
By PMI structural foam, (proportion is 200kg/m 3) cut into 1.0mm thickness using as core, according to ASTMD638 testing standard, the elastic modelling quantity test of core is>=80MPa, modulus of shearing>=25MPa, shear strength>=1.2MPa;
The skinning layer be made up of polypropylene PP resin and 35wt% continuous carbon fibre is layered in the upper and lower surface of PMI foam, by cooling forming after mold heated heating, the temperature of heating is 260 DEG C, shaping heating 20s pressing time, cool time is 30s, must have the composite material structure of PMI sandwich.Test its property indices, the results are shown in Table 1.
embodiment 5:
By PMI structural foam, (proportion is 100kg/m 3) cut into 1.2mm thickness using as core, according to ASTMD638 testing standard, the elastic modelling quantity test of core is>=80MPa, modulus of shearing>=25MPa, shear strength>=1.2MPa;
The skinning layer be made up of polypropylene PE resin and 50wt% continuous carbon fibre is layered in the upper and lower surface of PMI foam, by cooling forming after mold heated heating, the temperature of heating is 260 DEG C, shaping heating 30s pressing time, cool time is 50s, must have the composite material structure of PMI sandwich.Test its property indices, the results are shown in Table 1.
comparative example 1:
Core uses (Shao and electrician's (strain) make " EFCELL(registration mark) " RC2010, independent expanded polypropylene (thickness 1.0mm, proportion 0.48g/cm 3);
The transition glued membrane tack coat be made up of with glass fiber woven cloth (specification 50gsm) 40wt% thermosetting epoxy resin (thickness is 0.05mm) is processed into the sheet material the same with expanded polypropylene size by thaw at RT and cutting, and in expanded polypropylene upper and lower surface, this pastes transition glued membrane tack coat;
And then on transition glued membrane tack coat, paste the skinning layer be made up of epoxy resin and 35wt% carbon fiber 3K woven cloth, the last mode heated by mold pressing in steel die is shaping, the Stress control of heating is at 100kg, temperature controls at 150 DEG C, time keeps 10min, obtains composite material structure.Test its property indices, the results are shown in Table 1.
comparative example 2:
Core uses (Shao and electrician's (strain) make " EFCELL(registration mark) " RC2010, independent expanded polypropylene (thickness 1.0mm, proportion 0.48g/cm 3);
The skinning layer be made up of polypropylene PP resin and 35wt% continuous carbon fibre is layered in the upper and lower surface of expanded polypropylene, by cooling forming after mold heated heating, the temperature of heating is 260 DEG C, shaping heating 20s pressing time, cool time is 30s, obtains composite material structure.Test its property indices, the results are shown in Table 1.
The performance test results of table 1 embodiment 1 ~ 5 and comparative example 1 ~ 2
　 Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Comparative example 1 Comparative example 2
Proportion 0.75 0.7 0.3 0.8 1.0 1.0 0.96
Thickness/mm 2.0 1.0 3.4 2.0 2.2 2.0 2.0
Bending modulus/Gpa 51 67 53 48 40 38 32
Bending strength/Mpa 610 700 300 500 420 300 260
Properties method of testing:
Proportion: by GB1033-86, the proportion of test clip laminar structure;
Thickness: by micrometer or slide measure test sheet metal thickness;
Bending strength: Plastics-Oetermination of flexural properties GB/T9341-2008;
Bending modulus: Plastics-Oetermination of flexural properties GB/T9341-2000.

Claims (11)

1. there is a composite material structure for PMI sandwich, it is characterized in that, comprise core (I) and be configured in this core
(I) skinning layer (II) of upper and lower surface, described skinning layer is made up of resin base fiber reinforced composite material, and described core (I) is PMI foam, and the proportion of described core (I) is 75kg/m 3~ 200kg/m 3, thickness is 0.4mm ~ 5.0mm.
2. the composite material structure with PMI sandwich according to claim 1, it is characterized in that: the elastic modelling quantity of described core (I) is>=80MPa according to ASTMD638 test, modulus of shearing is>=25MPa according to ASTMD638 test, and shear strength is>=1.2MPa according to ASTMD638 test; Proportion is 110kg/m 3~ 150kg/m 3, thickness is 0.6mm ~ 1.2mm.
3. the composite material structure with PMI sandwich according to claim 1, is characterized in that: described skinning layer (II)
In resin matrix be thermosetting resin, fibre reinforcement is one or more in carbon fiber, glass fibre, basalt fibre or aramid fiber, and wherein the content of resin matrix is 30wt% ~ 45wt%, and preferred content is 35wt% ~ 40wt%.
4. the composite material structure with PMI sandwich according to claim 3, is characterized in that: described thermosetting resin
For one or more in epoxy resin, phenolic resins, epoxy phenolics, unsaturated polyester resin or polyurethane resin.
5. the composite material structure with PMI sandwich according to claim 3, is characterized in that: preparation transition glued membrane tack coat (III) in the middle of core (I) and skinning layer (II).
6. the composite material structure with PMI sandwich according to claim 5, is characterized in that: described transition glued membrane glues
Knot layer (III) is made up of resin glued membrane or resin-based fibre reinforced materials, and thickness is 0.02mm ~ 2.0mm, and proportion is 0.9g/cm 3~ 1.3g/cm 3.
7. the composite material structure with PMI sandwich according to claim 6, is characterized in that: described resin glued membrane is
Be made up of one or more in epoxy resin, phenolic resins, epoxy phenolics, unsaturated polyester resin or polyurethane resin; Resin matrix in described resin-based fibre reinforced materials is one or more in epoxy resin, phenolic resins, epoxy phenolics, unsaturated polyester resin or polyurethane resin, fibre reinforced materials is one or more in continuous or discrete carbon fiber, glass fibre, basalt fibre or aramid fiber, and wherein the content of resin matrix is 35wt% ~ 70wt%.
8. the composite material structure with PMI sandwich according to claim 1, it is characterized in that: the resin matrix in described skinning layer (II) is thermoplastic resin, fibre reinforcement is one or more in carbon fiber, glass fibre, basalt fibre or aramid fiber, wherein the content of resin matrix is 30wt% ~ 60wt%, and preferred content is 35wt% ~ 50wt%.
9. the composite material structure with PMI sandwich according to claim 8, is characterized in that: described thermoplastic resin is one or more in polypropylene PP, polythene PE, polyamide PA, polybutylene terephthalate (PBT) PBT, PEI PEI, polycarbonate, polyether sulfone PES, polyether-ether-ketone PEEK, polyimides PI or polyamidoimide PAI.
10. the preparation method with the composite material structure of PMI sandwich according to any one of claim 1 ~ 8, is characterized in that, comprise the steps:
When the resin matrix in skinning layer (II) is thermosetting resin, its step is included in core (I) upper and lower surface and pastes transition glued membrane tack coat, and then skinning layer (II) is pasted on transition glued membrane tack coat, mode finally by mold pressing or lamination heating is shaping, the temperature of heating is between 140 DEG C ~ 180 DEG C, pressure is between 0.3MPa ~ 10MPa, and molding time is between 1min ~ 30min;
When the resin matrix in skinning layer (II) is thermoplastic resin, its step comprises upper and lower surface skinning layer (II) being layered in described core (I), by cooling forming after the heating of mold heated, flat heater or steel band, the temperature of heating is between 150 DEG C ~ 300 DEG C, shaping heating pressing time is 1s ~ 600s, and cool time is 1s ~ 120s.
11. application of the composite material structure with PMI sandwich in 3C industry, household electric appliances, automobile industry, Aero-Space or track traffic industry according to any one of claim 1 ~ 8.
CN201510187341.9A 2015-04-20 2015-04-20 Composite structure with PMI sandwich as well as preparation method and application of composite structure Pending CN105563970A (en)

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