CN109013252A - A kind of Medical device box bracket - Google Patents

A kind of Medical device box bracket Download PDF

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Publication number
CN109013252A
CN109013252A CN201810594777.3A CN201810594777A CN109013252A CN 109013252 A CN109013252 A CN 109013252A CN 201810594777 A CN201810594777 A CN 201810594777A CN 109013252 A CN109013252 A CN 109013252A
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CN
China
Prior art keywords
workpiece
nylon
priming paint
coating
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810594777.3A
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Chinese (zh)
Inventor
路璐
杨玉宁
夏逸
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Paragon Medical Equipment (changzhou) Co Ltd
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Paragon Medical Equipment (changzhou) Co Ltd
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Application filed by Paragon Medical Equipment (changzhou) Co Ltd filed Critical Paragon Medical Equipment (changzhou) Co Ltd
Priority to CN201810594777.3A priority Critical patent/CN109013252A/en
Publication of CN109013252A publication Critical patent/CN109013252A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B05D1/22—Processes for applying liquids or other fluent materials performed by dipping using fluidised-bed technique
    • B05D1/24—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
    • B05D3/102—Pretreatment of metallic substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/546—No clear coat specified each layer being cured, at least partially, separately
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/002—Priming paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/67—Particle size smaller than 100 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/10—Metallic substrate based on Fe
    • B05D2202/15—Stainless steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2350/00—Pretreatment of the substrate
    • B05D2350/30—Change of the surface
    • B05D2350/33—Roughening
    • B05D2350/35—Roughening by chemical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2451/00—Type of carrier, type of coating (Multilayers)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2502/00—Acrylic polymers
    • B05D2502/005—Acrylic polymers modified
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2505/00—Polyamides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

The present invention relates to a kind of Medical device box brackets, comprising the following steps: A. pretreatment；Workpiece is impregnated in an acidic solution；B. basecoat paint；To workpiece surface spraying priming paint；C. drying heating: by solidifying priming paint and workpiece preheats；D. nylon coated: the workpiece of preheating is immersed in nylon powder, so that nylon powder forms nylon coating in workpiece surface；E. levelling, it is cooling.Stainless steel surface nylon coated method coating adhesion of the present invention is good, durable.

Description

A kind of Medical device box bracket
Technical field
The present invention relates to a kind of method of stainless steel surface nylon coated, especially a kind of Medical device box bracket.
Background technique
Currently, coating nylon on metal surface, generally uses high pressure electrostatic painting method, this method can make the gold of complicated shape It is uneven to belong to the covering of rack surface nylon layer, bottom drain phenomenon can be generated, while requirement is not achieved in the adhesive force of coating, repeatedly Blistering or decortication phenomenon can be generated after high-temperature sterilization disinfection, be absolutely unacceptable in medical device industry.
Summary of the invention
The technical problem to be solved by the present invention is to propose that a kind of coating adhesion is good, long-lived stainless steel surface Buddhist nun Imperial coating method, and the product as made from the method.
A kind of technical solution that the present invention proposes to solve above-mentioned technical problem is: a kind of stainless steel surface nylon coated side Method, comprising the following steps:
A. it pre-processes；Workpiece is impregnated into 20min~25min in an acidic solution, the ingredient of the acid solution be 3wt%~ The hydrochloric acid of 5wt%, the nitric acid of 5wt%~8wt%, the ethanedioic acid of 2wt%~3wt%, remaining is water；
B. basecoat paint；To workpiece surface spraying with a thickness of 10 μm to 30 μm of priming paint, the priming paint is by following mass percent Component mix: amino modified acrylate 20%~30%, methacrylate 15%~20% are nano-silicon dioxide modified Acrylate 5%~8%, curing agent 0.3%~2%, silane coupling agent 5%~10%, dispersing agent 8%~15%, remaining is organic solvent；
C. drying heating: it is 5min~6min in 250 DEG C~280 DEG C of baking oven that workpiece, which is placed in temperature, so that solidifying priming paint and Workpiece preheating；
D. nylon coated: using fluidized bed dipping technique, the workpiece of preheating is immersed 3s~6s in nylon powder, so that nylon powder exists The nylon coating that workpiece surface is formed with a thickness of 100 μm to 500 μm；
E. levelling, it is cooling.
The mass percentage content of amino modified acrylate is 25%~28% in the priming paint, the matter of methacrylate Measuring degree is 18%~20%, and the mass percentage content of nano-silicon dioxide modified acrylic ester is 7%~8%.
The amino modified acrylate is aliphatic urethane acrylate.
The methacrylate is hydroxyethyl methacrylate, methyl methacrylate or dimethacrylate second two Ester；
The organic solvent is one of N-butyl, ethyl acetate, ethyl alcohol and acetone or a variety of.
The curing agent is Isocyanates curing agent；
The dispersing agent is fatty alcohol polyoxyethylene ether.
Workpiece is first successively carried out to deburring, sandblasting, bending processing in the step A, then is impregnated in an acidic solution.
In the step E, the planarization on surface is checked after workpiece is cooling, is then packed and stored.
A kind of technical solution that the present invention proposes to solve above-mentioned technical problem is: a kind of to use above-mentioned stainless steel surface Buddhist nun Product obtained by imperial coating method.
The present invention has the effect of positive: the method that stainless steel surface nylon coated method of the invention uses acid corrosion Both the impurity for having washed away surface obtains the roughness of needs further through pore corrosion, so that the painting of stainless steel substrate and surface Layer combination is even closer, and will not influence the dimensional accuracy of workpiece.Stainless steel surface nylon coated method of the invention uses Special priming paint, adhesive force is good, excellent combination property, so that the combination of stainless steel substrate and nylon coating is stronger.It is made Medical device box stent surface smoothing it is thick and solid, make the equipment surfaces being supported will not be by scratch or friction.Wearability is not 3 times or more of rust steel, tension and yield strength are high, and bracket is able to maintain intact, 25 continuous high temperatures by 30 degree of coating surfaces of bending Sterilizing test, any deformation does not occur, can pass through 2000 hours salt spray tests, durable.
Specific embodiment
Embodiment 1
The stainless steel surface nylon coated method of the present embodiment, comprising the following specific steps
A. it pre-processes；Workpiece is first successively carried out to deburring, sandblasting, bending processing, then workpiece is impregnated in an acidic solution 22min, the ingredient of the acid solution are the hydrochloric acid of 5wt%, and the nitric acid of 7wt%, the ethanedioic acid of 2.5wt%, remaining is water.It is acid Solution can remove the impurity of workpiece surface, while carry out pore corrosion to workpiece surface, form 12 μm to 18 μm of micropore, make Obtaining workpiece surface has certain roughness, and cost is relatively low compared with blasting craft, and can guarantee that workpiece will not deform, will not Influence dimensional accuracy.It is tested using above-mentioned special acid solution, the bond strength of follow-up coating is not up to when less than 20min To requirement, it will lead to coating when greater than 25min and the case where out-of-flatness locally occur, therefore, workpiece impregnates in an acidic solution Time preferred 20min to 25min.
B. basecoat paint；To workpiece surface spraying with a thickness of 25 μm to 30 μm of priming paint, the priming paint is by following quality hundred The component of ratio is divided to mix: amino modified acrylate 26%, methacrylate 18%, nano-silicon dioxide modified acrylic Ester 8%, curing agent 1.5%, silane coupling agent 8%, dispersing agent 10%, remaining is organic solvent.
Wherein, amino modified acrylate use Zhongshan city's Ke Tian Electron Material Co., Ltd trade mark for 3295 aliphatic Urethane acrylate.Nano-silicon dioxide modified acrylic ester is by acrylic resin and the nanometer for accounting for acrylic resin dosage 6% Silicon dioxide gel is combined.Methacrylate uses hydroxyethyl methacrylate.Silane coupling agent is KH550.It is organic Solvent is ethyl acetate.Curing agent is TDI tripolymer.Dispersing agent is fatty alcohol polyoxyethylene ether.
Aliphatic urethane acrylate is conducive to improve the flexibility and elasticity of adhesive force and coating.Nanometer titanium dioxide Fluorine-silicon modified acrylic ester is conducive to reinforce the physical mechanical strength of coating, improves bend-resistance.The base paint formulation dispersion effect is good, With suitable surface tension and film forming.
C. drying heating: being placed in 5min in the baking oven that temperature is 280 DEG C for workpiece, so that solidifying priming paint and workpiece preheating. The temperature of workpiece surface commonly reaches 230 DEG C or so.
D. nylon coated: using fluidized bed dipping technique, the workpiece of preheating is immersed 3s in nylon powder, so that nylon powder exists The nylon coating that workpiece surface is formed with a thickness of 150 μm.Fluidized bed dipping technique can also be replaced with electrostatic painting process.
E. levelling, it is cooling, the planarization of workpiece surface is checked, is then packed and stored.
Embodiment 2
The stainless steel surface nylon coated method of the present embodiment, comprising the following specific steps
A. it pre-processes；Workpiece is first successively carried out to deburring, sandblasting, bending processing, then workpiece is impregnated in an acidic solution 25min, the ingredient of the acid solution are the hydrochloric acid of 4wt%, and the nitric acid of 6wt%, the ethanedioic acid of 3wt%, remaining is water.
B. basecoat paint；To workpiece surface spraying with a thickness of 15 μm to 20 μm of priming paint, the priming paint is by following quality hundred The component of ratio is divided to mix: amino modified acrylate 25%, methacrylate 19%, nano-silicon dioxide modified acrylic Ester 7%, curing agent 1.2%, silane coupling agent 10%, dispersing agent 12%, remaining is organic solvent.
C. drying heating: being placed in 5min in the baking oven that temperature is 280 DEG C for workpiece, so that solidifying priming paint and workpiece preheating.
D. nylon coated: using fluidized bed dipping technique, the workpiece of preheating is immersed 6s in nylon powder, so that nylon powder exists The nylon coating that workpiece surface is formed with a thickness of 300 μm.
E. levelling, it is cooling, the planarization of workpiece surface is checked, is then packed and stored.
Embodiment 3
The stainless steel surface nylon coated method of the present embodiment, comprising the following specific steps
A. it pre-processes；Workpiece is first successively carried out to deburring, sandblasting, bending processing, then workpiece is impregnated in an acidic solution 20min, the ingredient of the acid solution are the hydrochloric acid of 3wt%, and the nitric acid of 8wt%, the ethanedioic acid of 3wt%, remaining is water.
B. basecoat paint；To workpiece surface spraying with a thickness of 25 μm to 30 μm of priming paint, the priming paint is by following quality hundred The component of ratio is divided to mix: amino modified acrylate 28%, methacrylate 20%, nano-silicon dioxide modified acrylic Ester 7.5%, curing agent 1.5%, silane coupling agent 9%, dispersing agent 11%, remaining is organic solvent.
C. drying heating: being placed in 5min in the baking oven that temperature is 280 DEG C for workpiece, so that solidifying priming paint and workpiece preheating.
D. nylon coated: using fluidized bed dipping technique, the workpiece of preheating is immersed 3s in nylon powder, so that nylon powder exists The nylon coating that workpiece surface is formed with a thickness of 150 μm.
E. levelling, it is cooling, the planarization of workpiece surface is checked, is then packed and stored.
Embodiment 4
The stainless steel surface nylon coated method of the present embodiment, comprising the following specific steps
A. it pre-processes；Workpiece is first successively carried out to deburring, sandblasting, bending processing, then workpiece is impregnated in an acidic solution 20min, the ingredient of the acid solution are the hydrochloric acid of 4.5wt%, and the nitric acid of 6wt%, the ethanedioic acid of 2wt%, remaining is water.
B. basecoat paint；To workpiece surface spraying with a thickness of 12 μm to 18 μm of priming paint, the priming paint is by following quality hundred The component of ratio is divided to mix: amino modified acrylate 27%, methacrylate 19%, nano-silicon dioxide modified acrylic Ester 8%, curing agent 1.5%, silane coupling agent 8%, dispersing agent 10%, remaining is organic solvent.
C. drying heating: being placed in 5min in the baking oven that temperature is 280 DEG C for workpiece, so that solidifying priming paint and workpiece preheating.
D. nylon coated: using fluidized bed dipping technique, the workpiece of preheating is immersed 6s in nylon powder, so that nylon powder exists The nylon coating that workpiece surface is formed with a thickness of 300 μm.
E. levelling, it is cooling, the planarization of workpiece surface is checked, is then packed and stored.
Embodiment 5
The stainless steel surface nylon coated method of the present embodiment, comprising the following specific steps
A. it pre-processes；Workpiece is first successively carried out to deburring, sandblasting, bending processing, then workpiece is impregnated in an acidic solution 25min, the ingredient of the acid solution are the hydrochloric acid of 3.5wt%, and the nitric acid of 5wt%, the ethanedioic acid of 3wt%, remaining is water.
B. basecoat paint；To workpiece surface spraying with a thickness of 25 μm to 30 μm of priming paint, the priming paint is by following quality hundred The component of ratio is divided to mix: amino modified acrylate 26%, methacrylate 19%, nano-silicon dioxide modified acrylic Ester 7.5%, curing agent 1.2%, silane coupling agent 5%, dispersing agent 15%, remaining is organic solvent.
C. drying heating: being placed in 5min in the baking oven that temperature is 280 DEG C for workpiece, so that solidifying priming paint and workpiece preheating.
D. nylon coated: using fluidized bed dipping technique, the workpiece of preheating is immersed 3s in nylon powder, so that nylon powder exists The nylon coating that workpiece surface is formed with a thickness of 150 μm
E. levelling, it is cooling, the planarization of workpiece surface is checked, is then packed and stored.
Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and is not to of the invention The restriction of embodiment.For those of ordinary skill in the art, it can also be made on the basis of the above description Its various forms of variation or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair The obvious changes or variations that bright spirit is extended out are still in the protection scope of this invention.

Claims (3)

1. a kind of Medical device box bracket, the stainless steel surface nylon coated method of the bracket, comprising the following steps:
A. it pre-processes；Workpiece is first successively carried out to deburring, sandblasting, bending processing, then workpiece is impregnated in an acidic solution 22min, the ingredient of the acid solution are the hydrochloric acid of 5wt%, and the nitric acid of 7wt%, the ethanedioic acid of 2.5wt%, remaining is water.
2. acid solution can remove the impurity of workpiece surface, while carry out pore corrosion to workpiece surface, 12 μm are formed to 18 μ The micropore of m, so that workpiece surface has certain roughness, cost is relatively low compared with blasting craft, and can guarantee workpiece not It can deform, will not influence dimensional accuracy.
3. being tested using above-mentioned special acid solution, the bond strength of follow-up coating is not reached requirement when less than 20min, It will lead to coating when greater than 25min and the case where out-of-flatness locally occur, therefore, the time that workpiece impregnates in an acidic solution is preferred 20min to 25min；
B. basecoat paint；To workpiece surface spraying with a thickness of 25 μm to 30 μm of priming paint, the priming paint is by following mass percent Component mix: amino modified acrylate 26%, methacrylate 18%, nano-silicon dioxide modified acrylic ester 8%, curing agent 1.5%, silane coupling agent 8%, dispersing agent 10%, remaining is organic solvent；
C. drying heating: being placed in 5min in the baking oven that temperature is 280 DEG C for workpiece, so that solidifying priming paint and workpiece preheating；
D. nylon coated: using fluidized bed dipping technique, the workpiece of preheating is immersed 3s in nylon powder, so that nylon powder is in workpiece The nylon coating that surface is formed with a thickness of 150 μm；
E. levelling, it is cooling；
The amino modified acrylate is aliphatic urethane acrylate；
The organic solvent is ethyl acetate；
In the step E, the planarization on surface is checked after workpiece is cooling, is then packed and stored.
CN201810594777.3A 2016-02-05 2016-02-05 A kind of Medical device box bracket Pending CN109013252A (en)

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