CN107650325A - A kind of complex of stainless steel and plastics and preparation method thereof - Google Patents
A kind of complex of stainless steel and plastics and preparation method thereof Download PDFInfo
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- CN107650325A CN107650325A CN201710773841.XA CN201710773841A CN107650325A CN 107650325 A CN107650325 A CN 107650325A CN 201710773841 A CN201710773841 A CN 201710773841A CN 107650325 A CN107650325 A CN 107650325A
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- Prior art keywords
- stainless steel
- injection molded
- molded layers
- acid
- steel substrate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14237—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity
- B29C2045/14245—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity using deforming or preforming means outside the mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
Abstract
The invention discloses complex of a kind of stainless steel and plastics and preparation method thereof.The preparation method includes：Stainless steel substrate is provided；Mechanical surface treatment is carried out to stainless steel substrate, stainless steel substrate is formed the surface with micron order roughness；Corrosion etching processing is carried out to stainless steel substrate, coarse injection molded layers are formed on the surface with micron order roughness, the coarse injection molded layers include cellular pore and/or sunk structure, the thickness range of the coarse injection molded layers is 10 nanometers 15 microns, the pore diameter range of the cellular pore concentrates on 10 300 nanometers, and the depth bounds of the sunk structure concentrates on 10 nanometers 15 microns；The injection molding plastic material in the coarse injection molded layers, the part-structure of the plastic material are embedded in the coarse injection molded layers.One of the present invention has technical effect that, increases stainless steel watch surface roughness and uniformity, improves the bond strength with working of plastics.
Description
Technical field
The present invention relates to materials processing technology field, in particular it relates to the complex and its system of a kind of stainless steel and plastics
Preparation Method.
Background technology
In fields such as electronic apparatus, automobile mechanical, home decorations, increasing product is compound using metal and plastics
Form forms product structure, to realize the functional effect compared with horn of plenty.For example, product appearance needs metallicity, internal structure
When more complicated, reduction technological process, the purpose for reducing weight, saving material can be played by injection molding.
With adhesive bonds, buckle engaging or traditional combination such as rivet interlacement, there is that compound reliability is low, needs to increase
The defects of being fixed the mechanism of connection.With the development of technology, have also appeared in the prior art by plastic injection in metal surface
Complex method.When carrying out the injection molding of plastics, using metal material as base material, by the direct injection molding of plastics in metal
On material.But the combination power between metal and plastics is limited, the risk to come off, compound reliability between the two be present
It is difficult to improve.
Further, because the surface of metal material generally has the fine defects such as crystal defect, cut.This kind of defect one
Aspect can cause the injection junction air-tightness of plastics and metal to decline, and plastic material can not closely be embedded in metal material surface
Microstructure in.On the other hand, the combination power that plastics and metal are also result in the defects of metal material surface declines, and increases
The big risk that both depart from.
Therefore, it is necessary to be improved to the combination process of metal and plastic material, the structure for improving Material cladding is reliable
Property, or the structure of product made of simplification, reduce increases additional component on product.
The content of the invention
It is an object of the present invention to provide a kind of stainless steel and the improvement processing scheme of the complex of plastics.
According to the first aspect of the invention, there is provided a kind of preparation method of the complex of stainless steel and plastics, including：
Stainless steel substrate is provided；
Mechanical surface treatment is carried out to stainless steel substrate, stainless steel substrate is formed the surface with micron order roughness；
Corrosion etching processing is carried out to stainless steel substrate, coarse injection is formed on the surface with micron order roughness
Layer, the coarse injection molded layers include cellular pore and/or sunk structure, and the thickness range of the coarse injection molded layers is received for 10
- 15 microns of rice, the pore diameter range of the cellular pore concentrate on 10-300 nanometers, and the depth bounds of the sunk structure is concentrated
At 10 nanometers -15 microns；
The injection molding plastic material in the coarse injection molded layers, the part-structure of the plastic material are embedded in the coarse injection
In layer.
Alternatively, the mechanical surface treatment includes at least one of sandblasting or laser engraving.
Alternatively, the sandblasting uses material spray of the particle size range for 0-1.5 millimeters.
Alternatively, the material spray that the sandblasting uses is emergy, silicon carbide sand, glass sand, ceramic sand, glass sand, steel sand
At least one of.
Alternatively, the parameter of the laser engraving：Power is 10-120 watts, and speed is 50-3500 mm/seconds, and frequency is
20-80 KHzs.
Alternatively, the corrosion etching processing includes, and stainless steel substrate is placed in 30-90 degrees Celsius of chemical etching liquor
0.5-60 minutes are impregnated, the chemical etching liquor includes：Sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid, boric acid, formic acid, propionic acid, butyric acid,
At least one of alginic acid, oxalic acid, citric acid.
Alternatively, the corrosion etching processing includes, and using stainless steel substrate as anode, makes the table with micron order roughness
Electrochemical corrosion occurs for face, and the voltage range of electrochemical corrosion is 5-60V, and the duration is 0.5-30 minutes.
Alternatively, one layer of profit hole agent is adsorbed in the coarse injection molded layers, the profit hole agent includes terephthalic acid (TPA), second two
Amine tetraacethyl, disodium ethylene diamine tetraacetate, p-nitrophenyl sulfonic acid, water-soluble amino acids, ethylenediamine, triethanolamine, ammoniacal liquor, chloroethene
At least one of alkane, epoxychloropropane.
Another aspect of the present invention additionally provides a kind of complex of stainless steel and plastics, and the engaging member includes stainless base steel
Material and plastic material, the surface of the stainless steel substrate have coarse injection molded layers, and the coarse injection molded layers are by mechanical surface
Reason and corrosion etching processing are formed, and the coarse injection molded layers include cellular pore and/or sunk structure, the coarse injection
The thickness range of layer is 10 nanometers -15 microns, and the pore diameter range of the cellular pore concentrates on 10-300 nanometers, the depression
The depth bounds of structure concentrates on 10 nanometers -15 microns, injection molding plastic material in the coarse injection molded layers, the plastic material
Part-structure is embedded in the coarse injection molded layers.Alternatively, the material of the plastic material includes thermoplastic resin and filling material
Material, mass percent of the packing material in the plastic material be 5-40%, the packing material including nylon fiber,
At least one of carbon fiber, glass fibre, aromatic polyamide fibre, calcium carbonate, magnesium carbonate, silica and clay.
One of the present invention has technical effect that after mechanical surface treatment, the surface for adding stainless steel substrate is thick
Rugosity, improve the bond strength of stainless steel substrate and plastic material.
By referring to the drawings to the present invention exemplary embodiment detailed description, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
It is combined in the description and the accompanying drawing of a part for constitution instruction shows embodiments of the invention, and even
It is used for the principle for explaining the present invention together with its explanation.
Fig. 1 is the structural representation of the complex of stainless steel and plastics provided by the invention；
Fig. 2 is the surface appearance feature of the stainless steel substrate after mechanical surface treatment in the specific embodiment of the invention；
Fig. 3 is complex schematic diagram of the complex provided by the invention in drawing experiment；
Fig. 4 is surface macro morphology characteristic pattern of the stainless steel substrate after stretching experiment；
Fig. 5 is the Cross Section Morphology characteristic pattern that stainless steel substrate engages with plastic material；
Fig. 6 is the surface appearance feature figure of the coarse injection molded layers of stainless steel substrate.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless have in addition
Body illustrates that the unlimited system of part and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative to be never used as to the present invention below
And its application or any restrictions that use.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
The invention provides the preparation method of a kind of stainless steel and the complex of plastics, first, there is provided stainless steel substrate.First
Mechanical surface treatment is carried out to the surface of stainless steel substrate, its surface is formed the surface with micron order roughness.Further
Ground, then corrosion etching process is carried out to stainless steel substrate, coarse injection molded layers are formed on the surface with micron order roughness.
The microscopic appearance features such as cellular pore and/or sunk structure, these shapes can be included in the coarse injection molded layers
Looks feature is produced by corrosiveness, is advantageous to improve the injection adhesion between plastic material and stainless steel substrate.It is described coarse
Injection molded layers from the thickness range that the skin surface of stainless steel substrate extends inward be 10 nanometers (nm) to 15 microns (μm).It is described
The pore diameter range of cellular pore and the depth bounds of sunk structure are 10 nanometers (nm) to 15 (μm).Alternatively, such as Fig. 6 institutes
Show, the aperture of the cellular pore 112 is concentrated in the range of 10-300nm；The depth of the sunk structure is relatively deep,
The depth of sunk structure is optionally concentrated in the range of 500nm-3 μm.It is described cellular thin by the corrosion etching processing
Hole 112 can also be formed in the sunk structure, and two kinds of microscopic appearances can be collectively forming, and be together with each other.
Then, the injection molding plastic material in the coarse injection molded layers of the stainless steel substrate, the part-structure of plastic material is made
In the coarse injection molded layers, the complex of stainless steel and plastics is formed.Pass through preparation method provided by the invention, Neng Gouyou
Effect improves the combination power between plastic material and stainless steel substrate.Fig. 5 shows that stainless steel substrate is combined with plastic material
Cross Section Morphology feature, the part of lower left is stainless steel substrate 1 in figure, and the part in upper right side is plastic material 2.It can be seen that slightly
For the integral thickness of rough injection molded layers 11 between 3-5 microns, the roughness of coarse injection molded layers 11 is higher and homogeneous.Plastics material can be made
Material 2 is embedded in injection, is formed and closely combined.The microscopic appearance of sunk structure 111, the depression are shown in Fig. 5
Structure 111 extends inward from the surface of stainless steel substrate 1.Plastic material 2 can be embedded into sunk structure 111.By right
Stainless steel substrate carries out mechanical surface treatment, adds stainless steel watch surface roughness, forms the male and fomale(M＆F) of uniformity distribution, changes
The structure such as original cut, crystal boundary gully, then chemical etching processing, in above-mentioned bumps on kind or elimination stainless steel substrate surface
Cellular pore or sunk structure are formed on face.So as to improve the surface conformance of stainless steel substrate, homogeneity and roughness.
So, plastic material stronger can be incorporated on stainless steel substrate.Combination power is less prone to decline, with reference to air-tightness
The situation of difference.
In the embodiment of the present invention, the mechanical surface treatment can use sandblasting or laser engraving.This hair
The bright concrete operations mode not to mechanical surface treatment is strictly limited, as long as can be formed stainless steel substrate has micron
The surface of level roughness.
The optional concrete technology of mechanical surface treatment can be：Degreasing, cleaning, drying first are carried out to stainless steel substrate.It
Afterwards, stainless steel substrate is placed in abrasive blast equipment, the parameter of blasting treatment is as follows：Admission pressure scope is 0.6-0.9MPa, spray
Sand pressure limit is 0.1-0.4MPa, and sandblasting particle size range 0-1.5 millimeters, blast time scope 2-60s, specific blast time can
With depending on specific roughness requirements.Especially, it is contemplated that in actual production processing, preferentially from automatic sand blasting equipment, ensure
The production efficiency and sandblasting uniformity of blasting treatment.Still optionally further, can be by stainless base steel after blasting treatment is completed
Material carries out degreasing, water-washing step successively, removes the sand grains remained on stainless steel substrate or the impurity of absorption.Blasting craft passes through
Material spray is hit to the surface of stainless steel substrate, deforms upon surface, forms tiny depression stricken.Original gully,
The defects of cut, is deformed, and similar tiny pit is formed to the surface of surrounding.Pass through this blasting craft, it is possible to increase no
The surface uniformity for steel substrate entirety of becoming rusty, roughness uniformity, reduce the influence for even eliminating native defect.
In other embodiment mode, performance that can be according to the coarse injection molded layers ultimately generated, pattern requirement, selection is not
Same blasting craft parameter.For example, when the material spray of sandblasting is tetrahedron, stainless steel surfaces pattern is deeper gully after sandblasting；
When the material spray of sandblasting is spherosome, stainless steel surfaces pattern is to be relatively large in diameter shallower circular pit after sandblasting.
Further, blasting treatment can be used in emergy, silicon carbide sand, glass sand, ceramic sand, glass sand, steel sand
At least one, the present invention limited not to this.Can according to actual product to the performances of coarse injection molded layers, pattern will
Ask, select different materials as blasting guardrail.
In addition to sandblasting, mechanical surface treatment can also be carried out using laser engraving mode., can be with laser engraving technique
Pattern engraving is carried out to the surface of stainless steel substrate using laser beam array, the defects of removing gully on surface, cut, formed
It is some laser scored.The pattern of the indentation can be rice font, array, polygon, concentric circles group, circle, ellipse, broken line,
One or more in curve, spiral shape, straight line.
The optional concrete technology of laser engraving can be：Degreasing, cleaning, drying first are carried out to stainless steel substrate.Afterwards, will
Stainless steel part is placed in laser engraving equipment, laser equipment operational factor：Power is 10-120 watts, and speed is 50-3500 millis
Meter per second, frequency are 20-80 KHzs.Depiction is circular array, and circular pit is sequentially distributed in stainless steel into array format
Material surface, form micron order roughness.Especially, depiction is not limited to circle, can be carried out according to laser equipment and material
Design.The controllable technological parameter of laser engraving, realize the indentation of different depth, different in width, different pattern.After laser engraving
Stainless steel watch surface state is more consistent, and roughness value is bigger, enables in particular to be formed the indenture of vertical surface distribution, this structure can
Firmly embedding firmly plastics, dramatically increase the bond strength of stainless steel and plastics.
For corroding etching processing, the invention provides two kinds of optional embodiments.The present invention can also use
Other concrete technologies carry out corrosion etching processing to stainless steel substrate, and to form the coarse injection molded layers, the present invention enters not to this
Row limitation.
A kind of optional embodiment is coarse injection can be formed on the stainless steel substrate by chemical etching
Layer, stainless steel substrate is placed in dipping 0.5-60 minutes, the chemical etching liquor bag in 30-90 degrees Celsius of chemical etching liquor
Include：In sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid, boric acid, formic acid, propionic acid, butyric acid, alginic acid, oxalic acid, citric acid and their salt
It is at least one.For chemical etching, still optionally further, the process of whole etching process pore-forming can include repeatedly different changes
Etching step is learned, to regulate and control the pore-forming effect such as the aperture of cellular pore, distribution situation.
Another optional embodiment is coarse note can be formed on the stainless steel substrate by chemical etching
Layer is moulded, using stainless steel substrate as anode, makes to have the surface of micron order roughness that electrochemical corrosion, the electricity of chemical etching occurs
Pressure scope is 5-60V, and the duration is 0.5-30 minutes.
Especially, chemical etching and chemical etching can also be respectively adopted in the different step of whole etching process.
This etching mode can obtain more rich pore-forming regulating effect, for example, it is larger first aperture can be formed using chemical etching
Hole, afterwards again with chemical etching directional etching formed the less cellular pore in aperture.
Alternatively, the stainless steel part after etching process, which can be placed in profit hole liquid, carries out moistening hole processing.By after etching not
Rust steel substrate is placed in profit hole agent, after soaking a period of time, takes out naturally dry, can also cleaning, drying.Profit hole processing
The characteristic on stainless steel part surface can be improved, form more ammonium ions, enable plastic material in follow-up injection molding more preferable
Be filled into the cellular pore, formed plastic material solidification after be embedded in cellular pore in form.
It is described profit hole agent include terephthalic acid (TPA), ethylenediamine tetra-acetic acid, disodium ethylene diamine tetraacetate, p-nitrophenyl sulfonic acid,
At least one of water-soluble amino acids, ethylenediamine, triethanolamine, ammoniacal liquor, chloroethanes, epoxychloropropane.By stainless steel substrate from
Moisten after being taken out in the agent of hole, be uniformly attached to profit hole agent in oxide layer can with the plastic material generation physics in injection moulding process and
Chemical reaction so that plastic material accelerates, full of in cellular pore, to significantly improve the adhesion of plastic cement and stainless steel part.
The present invention actually gives a kind of stainless steel substrates prepared through the above method.Specifically, sand blasting process parameter,
Sandblasting admission pressure 0.8MPa, blasting pressure 0.2MPa, blast time 6s, it is micro- via Scanning Electron after cleaning, drying
Mirror is analyzed, and blasting treatment significantly increases base surface roughness, forms equally distributed concavo-convex pattern, and pit is ellipse into approximation
Circle, a diameter of 8 microns.Fig. 2 is 304 stainless steel surfaces shape characteristics after sandblasting.
Then do etching process to sandblasting and non-sand-blasting stainless steel part, etching process solution be the sulfuric acid of mass fraction 20%+
The hydrofluoric acid of 50% oxalic acid+30%, 75 degrees Celsius of solution temperature, dip time is after 12 minutes, after being cleaned by ultrasonic drying, observes two groups
The pattern of sample is found：Identical etch process conditions, the substrate surface macro morphology after blasting treatment is more consistent, and color is deeper
Ash, extent of corrosion are more heavier compared with non-sandblasting.The modified stainless steel part in surface is embedded into injection mold, obtained most
Whole complex of complex.The plastic material mixed by PBT+30wt% glass fibres is injected under being 270 degrees Celsius in injection temperature, most
Injection moulding obtains the complex of stainless steel and plastics eventually.Fig. 3 is the complex of stainless steel and plastics in stretching experiment of the present invention
Schematic diagram.Wherein, plastic material 2 is embedded into cellular pore 11, the contact area of plastic material 2 and stainless steel substrate 1
For 0.5cm2.The complex by sandblasting and non-sandblasting draws stretching on cupping machine respectively, obtains the fracture of its average shear
Intensity is 34.5MPa and 25.3MPa, and blasting treatment has greatly improved the bond strength of stainless steel part and plastics.
Even more noteworthy, after mechanical surface treatment, the remaining plastics of complex are more, the remnants of different zones
Plastics are more consistent.Reason is：Increase mechanical surface treatment in procedure of processing, the shortcomings that single chemical etching can be overcome,
Substrate surface forms the sunk structure of uniformity distribution, the structural stability of complex is improved, thus, it is possible to avoid compound
Caused by local pore-forming is bad in body the problem of poor air-tightness, product yield is improved.Fig. 4 is in the present invention in an embodiment
Stainless steel substrate surface macro morphology figure after stretching experiment, wherein left side steel disc is without mechanical surface treatment, the plastics of residual
(darker regions on steel disc top) are less and uneven；Right side steel disc have passed through mechanical surface treatment, and the plastics of residual are (on steel disc
The darker regions in portion) it is more and uniform.
Present invention also offers a kind of stainless steel and the complex of plastics, the complex includes stainless steel substrate and injection is moulded
Material.As a shown in Figure 6, formed with coarse injection molded layers 11, cellular pore 112 therein on the surface of the stainless steel substrate 1
Preferably nano level pore space structure, sunk structure are preferably micron-sized groove.Alternatively, the coarse injection molded layers 11 can be with
Being only formed in needs the region of injection molding plastic material 2 on stainless steel substrate 1.Or can also be in whole tables of stainless steel substrate 1
Face forms coarse injection molded layers 11.
Especially, for the stainless steel substrate 1 first via mechanical surface treatment, being formed uniformly has micron order roughness
Surface, corrosion etching is then done again.In such manner, it is possible to form the cellular pore 112 and sunk structure of size evenly, i.e., it is coarse
The structural homogeneity of injection molded layers 11 is higher.In an embodiment of the present invention, following mechanical surface treatment technique can be used.
The stainless steel substrate is positioned in abrasive blast equipment, adjusts admission pressure and the blasting pressure rotation of the equipment of sandblasting
Button, the direction of adjustment stainless steel substrate and sandblasting air-flow so that shot blasting particles can act perpendicularly to stainless steel substrate, at sandblasting
After managing a period of time, examine, complete mechanical surface treatment flow.Alternatively, the admission pressure scope of the blasting treatment is
0.3-0.9MPa, the blasting pressure scope of the blasting treatment is 0.1-0.5MPa.Preferably, the sandblasting pressure of the blasting treatment
Power is 0.2MPa.Fig. 2 shown after blasting treatment, the shape characteristic of stainless steel surfaces.
Through above-mentioned mechanical surface treatment, stainless steel substrate forms the surface with micron order roughness.Corruption is then carried out again
Etching process is lost, forms the coarse injection molded layers 11 with cellular pore and/or sunk structure.Stainless steel substrate is put into plastics
In the injection mold of material.By the Shooting Technique of plastics, plastic material 2 is molded to the table for being fixed on the stainless steel substrate 1
On face, as shown in Figure 1,5.Stainless steel substrate 1 and the microstructure at the faying face of plastic material 2, the plastics are shown in Fig. 5
Material 2 can be embedded into injection moulding process in coarse injection molded layers 11, the combination of reinforced plastics material 2 and stainless steel substrate 1.
In Fig. 5 embodiment, there is sunk structure 111 in coarse injection molded layers 11, sunk structure 111 is embedded in it for plastic material 2
In.Further, Fig. 6 shows the structure of the cellular pore 112 in coarse injection molded layers 11, and the cellular pore 112 can
To be distributed in the surface and inside of whole coarse injection molded layers, can also be formed on the surface of sunk structure 111.The energy of plastic material 2
Enough it is embedded in the cellular pore 112, improves combination power.
After mechanical surface treatment, the roughness and hardness on stainless steel substrate top layer are highly improved, and ultimately form tool
There is the uniform and delicate pitted skin of certain roughness.The sandblasting of mechanical surface treatment generally use, ball blast or shot-blast process, there is purification to make
Acted on with surface peening.Stainless steel substrate can play after blasting treatment and eliminate surface extruding striped and abrasive effect,
Simultaneously under the percussion of material, the surface of script becomes to be roughened, and ultimately forms the pitted skin of uniform and delicate.In addition, the skill
Another advantage of art is that the roughness of substrate surface can be adjusted by the particle diameter of material spray, processing time, surge etc..Root
According to the performance requirement to complex, above-mentioned parameter can be adjusted, the present invention is limited not to this.
Mechanical surface treatment changes the institutional framework on the surface of stainless steel substrate, reduces pitting nucleation activation energy, more
Be advantageous to later stage etching process.Strong plastic deformation occurs under the impact of mechanical surface treatment for the surface of stainless steel substrate,
Along with the increase of dislocation density in subgrain in plastic history, distortion of lattice, the change of spacing of lattice.Etched in the later stage
In processing, surface corrosion majority develops along dislocation direction, and the effect such as Cottrell air mass near dislocation is enriched largely
Solute atoms or foreign atom, reduce substrate surface energy, thus reduce pitting nucleation activation energy, contribute to etching formed
Preferably cellular pore.
Exemplified by rolling the stainless steel of state 304, in identical etching period, sample surfaces preferentially occur one after blasting treatment
The equally distributed black corrosion product of layer.There is such phenomenon to characterize, blasting treatment reduces the resistance to corrosion of material, improved
Substrate surface erosion uniformity.
Preferably, in the embodiment using blasting treatment, the admission pressure scope of blasting treatment is 0.6-0.9MPa,
The blasting pressure scope of blasting treatment is 0.3-0.4MPa, and the time of blasting treatment is 2-60s.Pass through the air inlet to blasting treatment
The conditional regulatories such as pressure, blasting pressure, time, sandblasting particle diameter, thickness, the roughness of sand blasted surface deformation layer can be controlled.
Pretreatment stage of the mechanical surface treatment as etching process, there is provided there is the top layer of certain roughness.Formed
Plastically deforming area changes the institutional framework on surface, reduces substrate surface energy, is advantageous to the etching process in corrosive liquid.
Etching process stage, rough top layer can provide favourable condition for corrosion process, be formed equally distributed cellular
Pore and/sunk structure.
It is worth noting that, mechanical surface treatment forms certain roughness on stainless steel substrate surface, base is not only increased
Material surface and the physical chelation of plastics, also add the specific surface area of stainless steel substrate, improve stainless steel and plastics
Adhesion.Blasting treatment formation and surface into the pit at certain angle of inclination, are had a certain degree with plastics faying face,
The possibility that plastics are peeled off is reduced, which thereby enhances the adhesion of stainless steel substrate and plastics.
Alternatively, the plastic material can be by polyphenylene sulfide, poly terephthalic acid butanol resin, polyamide, poly-
At least one of carbonic ester and polyolefin thermoplastic resin are made.These thermoplastic resins can combine the knot to form high rigidity
Crystalline substance resin combination, in Shooting Technique, composition cooling after can in cellular pore crystallization and freezing.The line of stainless steel
The coefficient of expansion is 1.5 × 10-5/ DEG C, and the linear expansion coefficient of plastic material is in 6-8 × 10-5/ DEG C, between stainless steel and plastic material
The linear expansion coefficient for differing larger is unfavorable for the solidification process of plastic material.Therefore, can be modified for plastic material with
Reduce the linear expansion coefficient of plastic material.The plastic material can include thermoplastic resin and packing material.The filling material
Expect that the mass percent in the plastic material is 5-40%.The packing material includes nylon fiber, carbon fiber, glass fibers
At least one of dimension, aromatic polyamide fibre, calcium carbonate, magnesium carbonate, silica and clay.Using glass fiber material as
Example, its linear expansion coefficient is only 3.8 × 10-5/ DEG C, the materials such as glass fibre can be mixed in thermoplastic resin, make plastics material
The linear expansion coefficient of feed composition and stainless steel as close as.
Although some specific embodiments of the present invention are described in detail by example, the skill of this area
Art personnel it should be understood that example above merely to illustrating, the scope being not intended to be limiting of the invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (10)
- A kind of 1. preparation method of the complex of stainless steel and plastics, it is characterised in that including：Stainless steel substrate is provided；Mechanical surface treatment is carried out to stainless steel substrate, stainless steel substrate is formed the surface with micron order roughness；Corrosion etching processing is carried out to stainless steel substrate, coarse injection molded layers, institute are formed on the surface with micron order roughness Stating coarse injection molded layers includes cellular pore and/or sunk structure, and the thickness range of the coarse injection molded layers is 10 nanometer -15 Micron, the pore diameter range of the cellular pore concentrate on 10-300 nanometers, and the depth bounds of the sunk structure concentrates on 10 - 15 microns of nanometer；The injection molding plastic material in the coarse injection molded layers, the part-structure of the plastic material are embedded in the coarse injection molded layers In.
- 2. preparation method according to claim 1, it is characterised in that the mechanical surface treatment includes sandblasting or laser is carved At least one of carve.
- 3. preparation method according to claim 2, it is characterised in that the sandblasting uses particle size range as 0-1.5 millimeters Material spray.
- 4. the preparation method according to Claims 2 or 3, it is characterised in that the material spray that the sandblasting uses is emergy, carbon At least one of SiClx sand, glass sand, ceramic sand, glass sand, steel sand.
- 5. preparation method according to claim 2, it is characterised in that the parameter of the laser engraving：Power is 10-120 Watt, speed is 50-3500 mm/seconds, and frequency is 20-80 KHzs.
- 6. preparation method according to claim 1, it is characterised in that the corrosion etching processing includes, by stainless base steel Material, which is placed in dipping 0.5-60 minutes, the chemical etching liquor in 30-90 degrees Celsius of chemical etching liquor, to be included：Sulfuric acid, nitric acid, phosphorus At least one of acid, hydrofluoric acid, boric acid, formic acid, propionic acid, butyric acid, alginic acid, oxalic acid, citric acid.
- 7. preparation method according to claim 1, it is characterised in that the corrosion etching processing includes, with stainless base steel Material is anode, makes to have the surface of micron order roughness that electrochemical corrosion occurs, and the voltage range of electrochemical corrosion is 5-60V, Duration is 0.5-30 minutes.
- 8. preparation method according to claim 1, it is characterised in that one layer of profit hole is adsorbed in the coarse injection molded layers Agent, the profit hole agent include terephthalic acid (TPA), ethylenediamine tetra-acetic acid, disodium ethylene diamine tetraacetate, p-nitrophenyl sulfonic acid, water solubility At least one of amino acid, ethylenediamine, triethanolamine, ammoniacal liquor, chloroethanes, epoxychloropropane.
- A kind of 9. complex of stainless steel and plastics, it is characterised in that the engaging member includes stainless steel substrate and plastic material, The surface of the stainless steel substrate has coarse injection molded layers, and the coarse injection molded layers are by mechanical surface treatment and corrode at etching Reason is formed, and the coarse injection molded layers include cellular pore and/or sunk structure, and the thickness range of the coarse injection molded layers is 10 nanometers -15 microns, the pore diameter range of the cellular pore concentrates on 10-300 nanometers, the depth bounds of the sunk structure Concentrate on 10 nanometers -15 microns, injection molding plastic material in the coarse injection molded layers, the part-structure of the plastic material is embedded in institute State in coarse injection molded layers.
- 10. the complex of stainless steel according to claim 9 and plastics, it is characterised in that the material of the plastic material Including thermoplastic resin and packing material, mass percent of the packing material in the plastic material is 5-40%, institute Stating packing material includes nylon fiber, carbon fiber, glass fibre, aromatic polyamide fibre, calcium carbonate, magnesium carbonate, titanium dioxide At least one of silicon and clay.
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