CN208784484U - Cookware or baking tray panel and equipment of cooking - Google Patents
Cookware or baking tray panel and equipment of cooking Download PDFInfo
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- CN208784484U CN208784484U CN201720688317.8U CN201720688317U CN208784484U CN 208784484 U CN208784484 U CN 208784484U CN 201720688317 U CN201720688317 U CN 201720688317U CN 208784484 U CN208784484 U CN 208784484U
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Abstract
The utility model relates to electric heating appliance technical fields, disclose a kind of cookware or baking tray panel and equipment of cooking, the cookware or baking tray panel include matrix (1) and non-sticking lining, the non-sticking lining includes the ceramic coating (2) and fluororesin layer (3) being sequentially formed on described matrix (1), the ceramic coating (2) be aluminum oxide coating layer, titania coating perhaps the composite coating of the aluminium oxide and titanium oxide fluororesin layer (3) be PTFE layers, PFA layers or PTFE and PFA composite layer.The bond strength of the non-sticking lining of the cookware, baking tray panel or equipment of cooking is high, surface hardness is high, scraping and wiping resistance performance is good, wetability is good, and its preparation process is at low cost, suitable for mass production.
Description
Technical field
The utility model relates to electric heating appliance technical fields, and in particular to a kind of cookware or baking tray panel and equipment of cooking.
Background technique
The non-sticking lining that traditional cooker industry uses includes organic fluorine (such as PTFE non-sticking lining) or inorganic ceramic
Non-sticking lining, existing fluororesin, ceramic non-stick coating are using air pressure spraying, high temperature sintering again after electrostatic spraying mostly
Solidify, and this coating life generally only has half a year to one-year age, and the low (dimension of PTFE non-sticking lining of coating hardness
Family name's hardness is 100-200HV, and the Vickers hardness of ceramic non-stick coating is 200-350HV), small (the PTFE not snearing of coating adhesion
The binding force of layer is 2-10MPa, and the binding force of ceramic non-stick coating is 2-5MPa), coating layer thickness it is smaller (PTFE non-sticking lining
With a thickness of 20-50 μm, ceramic non-stick coating with a thickness of 20-40 μm), acid and alkali-resistance and salt resistant character it is also general, be used for a long time
In the process inevitably scrape, wear, corrosion and cause coating shedding, failure, and when surface covering fail after, it is this not
Adhesive coating layer will not have non-stick, this caused and significantly limit to service life of coating and application.
For above-mentioned phenomenon mainly since coating structure and its technique cause, common non-sticking lining is two layers or three layers, is lifted
For example, aluminum substrate of the bottom with aluminum substrate or after anodized is contacted, and surface layer is painted on bottom, is led to
Oversintering film forming.Since the thicknesses of layers of anodic oxidation is only 2-5 μm, and coating hardness is lower, not fine and close, and works as salt water, salt
Cl in acid-It when the surface erosion of ion penetration non-sticking lining is to matrix, just directly reacts with bottom metal, forms corrosion,
And then surface covering performance is had an impact.In addition, the membrane thickness unevenness of air pressure spraying preparation, and film thickness it is uneven just
Lead to the difference of coating surface performance, the relatively thin place of coating is easy to appear failure, and unavoidably there are impurity for spraying
Grain causes the coating surface of preparation there are miscellaneous point, these miscellaneous points are also that coating the main reason of dotted failure occurs.
Therefore, it is necessary to develop new coating structure and preparation process, providing one kind has persistently not viscous and has excellent performance
The equipment of cooking of coating have become the critical issue of cooker industry.
Utility model content
The purpose of this utility model is to overcome the above problem of the existing technology, a kind of cookware or baking tray face are provided
Plate and equipment of cooking, the bond strength of the non-sticking lining of the cookware, baking tray panel or equipment of cooking is high, surface hardness is high, scratch resistance
Wiping performance is good, wetability is good, and its preparation process is at low cost, suitable for mass production.
To achieve the goals above, in a first aspect, the utility model provides a kind of cookware or baking tray panel, the cookware or
Baking tray panel includes matrix and non-sticking lining, and the non-sticking lining includes the ceramic coating and fluorine sequentially formed on the matrix
Resin layer, the ceramic coating are the composite coating of aluminum oxide coating layer, titania coating or aluminium oxide and titanium oxide, the fluorine
The composite layer that resin layer is PTFE layers, PFA layers or PTFE and PFA.
Preferably, the ceramic coating is the composite coating of aluminium oxide and titanium oxide.
Preferably, in the composite coating, on the basis of the total weight of aluminium oxide and titanium oxide, the content of titanium oxide is 3-
20 weight %, the content of aluminium oxide are 80-97 weight %.
Preferably, the ceramic coating with a thickness of 20-500 μm.
Preferably, the surface roughness of the ceramic coating is Ra 3-8 μm.
Preferably, the fluororesin layer with a thickness of 5-50 μm.
Preferably, the surface roughness of the fluororesin layer is Ra 0.5-1.5 μm.
Preferably, the porosity of the non-sticking lining is 1-3%.
Preferably, the ceramic coating is prepared in such a way that plasma spraying is handled, and the fluororesin layer passes through
Sol-gel-dip czochralski method is prepared.
Second aspect, the utility model provide one kind and cook equipment, which includes described in the utility model
Cookware or baking tray panel.
Preferably, the equipment of cooking is frying pan, frying pan, air fryer, baking machine, bread producing machine, electric cooker, Voltage force
Pot, soy bean milk making machine or baking tray.
The cookware of the utility model or the non-sticking lining of baking tray panel, bond strength is high, surface hardness is high, scraping and wiping resistance performance
Well, wetability is good, and its preparation process is at low cost, suitable for mass production.
In the cookware or baking tray panel of the utility model, non-sticking lining uses plasma spraying processing+sol-gel-dip
The performances such as czochralski method is prepared, and bond strength, surface hardness, surface are non-stick are superior to traditional air pressure spraying significantly
The coating being prepared, and process costs are low, it is suitable for mass production.
Specifically, ceramic coating (aluminum oxide coating layer, titania coating or aluminium oxide are prepared by plasma spray coating process
With the composite coating of titanium oxide), obtained ceramic coating surface has porosity, and surface roughness is larger, fluororesin layer meeting
Intrusion enters and then improves the bond strength of fluororesin layer and ceramic coating, and surface hardness is high, and can be improved non-sticking lining
Wearability, and plasma spraying technology process stabilizing, the binding force between coating and matrix is very high, further passes through Best-Effort request
Method prepares fluororesin layer in ceramic coating surface, and the binding force between fluororesin layer and ceramic coating is high, and Best-Effort request legal system
Standby fluororesin layer surfacing, even film layer will not generate miscellaneous point.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the non-sticking lining of the utility model.
Fig. 2 is the surface topography map of the non-sticking lining of the utility model.
Fig. 3 is the cross-section morphology figure of the non-sticking lining of the utility model.
Description of symbols
1 is matrix, and 2 be ceramic coating, and 3 be fluororesin layer.
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
In a first aspect, the utility model provides a kind of preparation method of non-sticking lining, this method comprises:
(1) alumina powder and/or titanium dioxide powder are subjected to plasma spraying processing, are applied with forming ceramics on matrix
Layer, the ceramic coating are the composite coating of aluminum oxide coating layer, titania coating or aluminium oxide and titanium oxide；
(2) then the matrix that impregnation steps (1) obtain in PTFE colloidal sol and/or PFA colloidal sol carries out at the uniform velocity lifting processing
To form fluororesin layer, the composite layer that the fluororesin layer is PTFE layers, PFA layers or PTFE and PFA；
(3) matrix that step (2) obtains is sintered.
In the method for the utility model, under preferable case, in step (1), 80% or more further preferred 90% or more
The sphericity of the alumina powder is 70%-99%, further preferably 90-99%.
Under preferable case, the partial size D50 of the alumina powder is 5-100 μm, further preferably 20-50 μm.
Under preferable case, the mobility of the alumina powder is 10-30s/50g, further preferably 10-20s/50g.
Under preferable case, the purity of the alumina powder is 90%-99.99%, further preferably 99%-
99.9%.
In the method for the utility model, under preferable case, in step (1), 80% or more further preferred 90% or more
The sphericity of the titanium dioxide powder is 70%-99%, further preferably 90-99%.
Under preferable case, the partial size D50 of the titanium dioxide powder is 5-100 μm, further preferably 20-50 μm.
Under preferable case, the mobility of the titanium dioxide powder is 10-30s/50g, further preferably 10-20s/50g.
Under preferable case, the purity of the titanium dioxide powder is 90%-99.99%, further preferably 99%-
99.9%.
In the method for the utility model, under preferable case, in step (1), by the mixed of alumina powder and titanium dioxide powder
It closes powder and carries out plasma spraying processing, on the basis of the weight of mixed-powder, the content of titanium dioxide powder is 3-20 weight %,
The content of alumina powder is 80-97 weight %.
In the method for the utility model, under preferable case, in step (1), the condition of the plasma spraying processing includes:
Spray power is 35-45kW, further preferably 38-42kW；Spray distance is 60-120mm, further preferably 80-
100mm；Spray angle is 60-90 °, further preferably 70-80 °；Spraying current is 650-700A, further preferably 670-
690A；Coating thickness is 20-500 μm, further preferably 50-300 μm；Main gas is argon gas, auxiliary gas is hydrogen, and hydrogen flowing quantity is
4-8L/min, further preferably 5-7L/min；Argon flow is 30-50L/min, further preferably 35-45L/min.
In the method for the utility model, under preferable case, the surface roughness of the ceramic coating formed in step (1) is Ra
3-8μm。
In the method for the utility model, under preferable case, before step (1), matrix is pre-processed, it then will be pre-
It handles obtained matrix surface and carries out the pre-heat treatment.
Wherein, pretreated method may include blasting treatment and ungrease treatment, for blasting treatment and ungrease treatment
There is no particular limitation for method, can be respectively various methods commonly used in the art.For example, the method for blasting treatment includes: to adopt
With the sand grains (such as aluminium oxide, glass sand, brown steel sand, black brown jade, white fused alumina, diamond dust) of 60-150 mesh, Jet Stream is controlled
Pressure is 0.2-0.9MPa, and obtained roughness is about Ra 2-8 μm.After blasting treatment, base inner surface need to be remained
Fine powder particles etc. remove, for the method for removing, there is no particular limitation, and can be blown clean with high pressure draught can also be with
It is removed by washing, this is well known to the skilled person, and details are not described herein.For example, the method for ungrease treatment can be with
It successively include alkali cleaning, pickling, washing and high temperature drying (such as 200-450 DEG C drying 10-15min).
Wherein, the method for the pre-heat treatment may include: that the matrix surface that pretreatment obtains is preheated to 100-150 DEG C.
In the method for the utility model, matrix can be stainless steel base, aluminum substrate, alloy matrix aluminum, titanium alloy substrate
Equal metallic matrixes or multilayer (including bilayer and three layers or more) metal clad substrates.The thickness of matrix can be 0.5-6mm.
In the method for the utility model, under preferable case, in step (2), PTFE colloidal sol and/or PFA colloidal sol are by including
The method of following steps is prepared:
(a) epoxy acrylate, hydrophilic organic solvent and water are mixed, obtains mixed liquor；
(b) PTFE emulsion and/or PFA lotion are added in mixed liquor, are mixed, acidity SiO is then added2Colloidal sol, coupling
Agent and curing agent are mixed, are stood.
Wherein, for the hydrophilic organic solvent in step (a), there is no particular limitation, can be common respectively hydrophilic
Property organic solvent, such as can be dehydrated alcohol and/or acetone.
Preferably, the method that mixed liquor is obtained in step (a) includes: that 10-15ml epoxy acrylate, 5-10ml is anhydrous
Ethyl alcohol, 5-10ml acetone and the mixing of 10-15ml deionized water, obtain mixed liquor.
Preferably, the method for step (b) includes: by the PTFE emulsion of 60-65ml and/or PFA lotion (in PTFE emulsion
The concentration that the concentration of PTFE is PFA in 55-65 weight %, PFA lotion is 55-65 weight %) it is slowly dropped into mixed liquor, ultrasound
Oscillation stirring 10-15min, is then added 10-20ml acidity SiO2Colloidal sol (acid SiO2SiO in colloidal sol2Concentration be 20-30 weight
Measure %), 0.3-1.2ml coupling agent and 1-2ml curing agent, sonic oscillation stirs 15-20min, and room temperature stands reaction 1-1.5h.
Preferably, coupling agent is silane coupling agent (such as KH-550), in titanate coupling agent and chromium complex coupling agent
It is at least one.Aforementioned silane coupling agent (such as KH-550), titanate coupling agent and chromium complex coupling agent can be obtained by commercially available
?.
Preferably, curing agent is at least one of epoxy resin, fatty amine and aromatic amine.The aforementioned ring as curing agent
Oxygen resin, fatty amine and aromatic amine can be commercially available.
In the method for the utility model, under preferable case, in step (2), the condition of the dipping include: the time be 3-
15min, further preferably 5-10min.
In the method for the utility model, under preferable case, in step (2), the condition at the uniform velocity lifting processing includes: to mention
Pulling rate degree is 1-10cm/min, further preferably 3-5cm/min.
In the method for the utility model, under preferable case, in step (3), the condition of the sintering processes includes: first to exist
20-50 DEG C of dry 1-6h, then in 60-100 DEG C of heating 8-16h.It is further preferred that first in 25-35 DEG C of dry 2-5h, then
80-90 DEG C of heating 10-15h.
In the method for the utility model, under preferable case, the fluororesin layer of formation with a thickness of 5-50 μm, further preferably
It is 10-30 μm.
In the method for the utility model, under preferable case, the surface roughness of the fluororesin layer of formation is Ra 0.5-1.5 μ
m。
In the method for the utility model, under preferable case, the porosity of the non-sticking lining is 1-3%.
Second aspect, the utility model provide the non-sticking lining that method described in the utility model is prepared.
The third aspect, as shown in Figure 1, the utility model provides a kind of cookware or baking tray panel, the cookware or baking tray face
Plate includes matrix 1 and non-sticking lining, and the non-sticking lining includes the ceramic coating 2 being sequentially formed in described matrix 1 and fluorine tree
Rouge layer 3, the ceramic coating 2 are the composite coating of aluminum oxide coating layer, titania coating or aluminium oxide and titanium oxide, the fluorine
The composite layer that resin layer 3 is PTFE layers, PFA layers or PTFE and PFA.
Preferably, the ceramic coating 2 is the composite coating of aluminium oxide and titanium oxide；It is further preferred that described compound
In coating, on the basis of the total weight of aluminium oxide and titanium oxide, the content of titanium oxide is 3-20 weight %, and the content of aluminium oxide is
80-97 weight %.
Preferably, matrix 1 is the metallic matrixes or more such as stainless steel base, aluminum substrate, alloy matrix aluminum, titanium alloy substrate
Layer (including bilayer and three layers or more) metal clad substrates.Wherein, multilayer metal compound matrix can for stainless steel/aluminum substrate,
Stainless steel/copper matrix, stainless steel/aluminium/Copper substrate etc..
Preferably, matrix 1 with a thickness of 0.5-6mm.
Preferably, the ceramic coating 2 with a thickness of 20-500 μm, further preferably 50-300 μm.
Preferably, the surface roughness of the ceramic coating 2 is Ra 3-8 μm.
Preferably, the fluororesin layer 3 with a thickness of 5-50 μm, further preferably 10-30 μm.
Preferably, the surface roughness of the fluororesin layer 3 is Ra 0.5-1.5 μm.
Preferably, the porosity of the non-sticking lining is 1-3%.
Preferably, the ceramic coating 2 is prepared in such a way that plasma spraying is handled.
Preferably, the fluororesin layer 3 is prepared by sol-gel-dip czochralski method.
Preferably, the non-sticking lining is non-sticking lining described in the utility model.
In the cookware or baking tray panel of the utility model, each coating can come according to the method for existing preparation respective coatings
Preparation, preferably prepares according to the utility model correlation method above-mentioned.
The third aspect, the utility model provide one kind and cook equipment, which includes described in the utility model
Cookware or baking tray panel.
Preferably, the equipment of cooking is frying pan, frying pan, air fryer, baking machine, bread producing machine, electric cooker, Voltage force
Pot, soy bean milk making machine or baking tray.
The utility model will be described in detail by preparation example and embodiment below.Following preparation example and embodiment
In, unless otherwise instructed, each material used is commercially available, and each method used is the common method of this field.
Using the grain of laser particle size analyzer (being purchased from Xiamen Ke Wang Electronics Co., Ltd., model KW510) measurement powder
Diameter D50.
Using particle image analyzer (purchased from the American-European gram Instrument Ltd. in Zhuhai, model PIP8.1) measurement powder
The sphericity of grain.
According to GB1482-84 using the mobility of Hall flowmeter measurement powder.
Using the purity of automatic polarimeter (opening up China, model AP-300 purchased from love) measurement powder.
Using surface roughometer (being purchased from Beijing Time Zhifeng Science Co., Ltd, model TIME3201) measurement surface
Roughness Ra.
Using contact angle measurement (being purchased from Shenzhen Xin Hengsen trade Co., Ltd, model XHSCAZ-2) measurement contact
Angle, measurement range are 0-180 °.
Alumina powder is purchased from Beijing Sang Yao Science and Technology Development Co., Ltd., and partial size D50 is 25 μm, the spherical shape of 95% powder
Degree is 95%, mobility 12s/50g, purity 99.5%.
Titanium dioxide powder is purchased from Beijing Sang Yao Science and Technology Development Co., Ltd., and partial size D50 is 22 μm, the spherical shape of 95% powder
Degree is 92%, mobility 18s/50g, purity 99.8%.
PTFE emulsion is purchased from Dajin Fluorine Coating (Shanghai) Co., Ltd., and the concentration of PTFE is 60 weight %.
PFA lotion is purchased from Dajin Fluorine Coating (Shanghai) Co., Ltd., and the concentration of PFA is 60 weight %.
Silane resin acceptor kh-550 is purchased from Nanjing Chemical Co., Ltd. forward.
Titanate coupling agent is purchased from Nanjing Pin Ning coupling agent Co., Ltd, model PN-130.
Chromium complex coupling agent is purchased from DuPont Corporation.
Epoxy acrylate is purchased from Foshan City Wei Chuan Chemical trade Co., Ltd, trade mark UV-359.
Epoxy resin gathers easy Chemical Co., Ltd., trade mark YD128 purchased from Guangzhou.
Embodiment 1
The present embodiment is used to illustrate the preparation method of the non-sticking lining of the utility model.
(1) aluminum pot matrix is pre-processed, wherein pretreated method includes: a) oil removing 8 minutes at a temperature of 55 DEG C；
B) it is cleaned with deionized water；C) 100 DEG C of drying 5min；D) the brown steel sand for using 60-80 mesh, in the Jet Stream pressure of 0.6MPa
Under to aluminum pot matrix surface carry out blasting treatment make 3 μm of its surface roughness Ra, it is then with air-flow that pot body matrix surface is residual
The powder particle stayed is blown clean；E) with the NaOH solution of 40 weight % at 80 DEG C alkali cleaning 1 minute；F) with the nitric acid of 20 weight %
In solution and 3 minutes；G) it after being cleaned with deionized water, is dried 12 minutes at 300 DEG C；
(2) matrix surface that step (1) obtains is preheated to 120 DEG C；
(3) plasma spraying processing is carried out using the mixed-powder of alumina powder and titanium dioxide powder, on matrix
Form the composite coating of aluminium oxide and titanium oxide, wherein on the basis of the weight of mixed-powder, the content of titanium dioxide powder is 5
Weight %, the content of alumina powder are 95 weight %；The condition of plasma spraying processing includes: that spray power is 40kW, spray
Applying distance is 90mm, and spray angle is 75 ° ± 1 °, spraying current 680A, and coating thickness is 200 μm, and main gas is argon gas, auxiliary gas
For hydrogen, hydrogen flowing quantity 6L/min, argon flow 40L/min.After measured, the table of the composite coating of aluminium oxide and titanium oxide
Surface roughness is 8 μm of Ra.
(4) PTFE colloidal sol is prepared: by 12ml epoxy acrylate, 8ml dehydrated alcohol, 8ml acetone and 12ml deionized water
Mixing, obtains mixed liquor；The PTFE emulsion of 62ml is instilled in mixed liquor, sonic oscillation stirs 12min, and 15ml acid is then added
Property SiO2Colloidal sol (SiO2Concentration be 25 weight %, similarly hereinafter), 0.8ml silane resin acceptor kh-550 and 1.5ml epoxy resin, surpass
18min is stirred in sound oscillation, and 25 DEG C of standings react 1.2h, obtain PTFE colloidal sol.
(5) then the matrix 8min that impregnation steps (3) obtain in PTFE colloidal sol is carried out with the pull rate of 4cm/min
At the uniform velocity lifting processing is to form PTFE layers；
(6) matrix for obtaining step (5) is first in 30 DEG C of dry 4h, then in 85 DEG C of heating 12h, obtains with a thickness of 25 μm
PTFE layers.After measured, PTFE layers of surface roughness is 0.6 μm of Ra；The contact angle of the non-sticking lining of formation is 125 °, wherein
PTFE layer surface is smooth, even film layer, does not occur miscellaneous point, and the surface topography map of the non-sticking lining of formation is as shown in Fig. 2, form
The cross-section morphology figure of non-sticking lining is as shown in Figure 3.
Embodiment 2
The present embodiment is used to illustrate the preparation method of the non-sticking lining of the utility model.
(1) stainless-steel pan matrix is pre-processed, wherein pretreated method includes: a) oil removing 8 at a temperature of 55 DEG C
Minute；B) it is cleaned with deionized water；C) 100 DEG C of drying 5min；D) the brown steel sand for using 60-80 mesh, in the jet gas of 0.8MPa
Carrying out blasting treatment to stainless-steel pan matrix surface under flowing pressure makes 3 μm of its surface roughness Ra, then with air-flow by pot body
The remaining powder particle of matrix surface is blown clean；E) with the NaOH solution of 40 weight % at 80 DEG C alkali cleaning 1 minute；F) with 20 weights
Measure % nitric acid solution in and 3 minutes；G) it after being cleaned with deionized water, is dried 11 minutes at 375 DEG C；
(2) matrix surface that step (1) obtains is preheated to 100 DEG C；
(3) plasma spraying processing is carried out using the mixed-powder of alumina powder and titanium dioxide powder, on matrix
Form the composite coating of aluminium oxide and titanium oxide, wherein on the basis of the weight of mixed-powder, the content of titanium dioxide powder is 3
Weight %, the content of alumina powder are 97 weight %；The condition of plasma spraying processing includes: that spray power is 38kW, spray
Applying distance is 80mm, and spray angle is 71 ° ± 1 °, spraying current 670A, and coating thickness is 150 μm, and main gas is argon gas, auxiliary gas
For hydrogen, hydrogen flowing quantity 5L/min, argon flow 45L/min.After measured, the table of the composite coating of aluminium oxide and titanium oxide
Surface roughness is 5 μm of Ra.
(4) PFA colloidal sol is prepared: by 10ml epoxy acrylate, 5ml dehydrated alcohol, 10ml acetone and 10ml deionized water
Mixing, obtains mixed liquor；The PFA lotion of 60ml is instilled in mixed liquor, sonic oscillation stirs 10min, and 10ml acid is then added
Property SiO2Colloidal sol, 0.5ml titanate coupling agent and 1ml ethylenediamine, sonic oscillation stir 15min, and 25 DEG C of standings are reacted 1h, obtained
PFA colloidal sol.
(5) then the matrix 5min that impregnation steps (3) obtain in PFA colloidal sol is carried out even with the pull rate of 3cm/min
Speed lifting processing is to form PFA layers；
(6) matrix for obtaining step (5) is first in 25 DEG C of dry 5h, then in 80 DEG C of heating 15h, obtains with a thickness of 15 μm
PFA layers.After measured, PFA layers of surface roughness is 0.9 μm of Ra, and PFA layer surface is smooth, even film layer, does not occur miscellaneous point；Shape
At non-sticking lining contact angle be 122 °.
Embodiment 3
The present embodiment is used to illustrate the preparation method of the non-sticking lining of the utility model.
(1) aluminum pot matrix is pre-processed, wherein pretreated method includes: a) oil removing 8 minutes at a temperature of 55 DEG C；
B) it is cleaned with deionized water；C) 100 DEG C of drying 5min；D) the brown steel sand for using 60-80 mesh, in the Jet Stream pressure of 0.8MPa
Under to aluminum pot matrix surface carry out blasting treatment make 4 μm of its surface roughness Ra, it is then with air-flow that pot body matrix surface is residual
The powder particle stayed is blown clean；E) with the NaOH solution of 40 weight % at 80 DEG C alkali cleaning 1 minute；F) with the nitric acid of 20 weight %
In solution and 3 minutes；G) it after being cleaned with deionized water, is dried 10 minutes at 450 DEG C；
(2) matrix surface that step (1) obtains is preheated to 150 DEG C；
(3) plasma spraying processing is carried out using the mixed-powder of alumina powder and titanium dioxide powder, on matrix
Form the composite coating of aluminium oxide and titanium oxide, wherein on the basis of the weight of mixed-powder, the content of titanium dioxide powder is 10
Weight %, the content of alumina powder are 90 weight %；The condition of plasma spraying processing includes: that spray power is 42kW, spray
Applying distance is 100mm, and spray angle is 79 ° ± 1 °, spraying current 690A, and coating thickness is 250 μm, and main gas is argon gas, auxiliary
Gas is hydrogen, hydrogen flowing quantity 7L/min, argon flow 35L/min.After measured, the composite coating of aluminium oxide and titanium oxide
Surface roughness is 6 μm of Ra.
(4) PTFE colloidal sol is prepared: by 15ml epoxy acrylate, 10ml dehydrated alcohol, 5ml acetone and 15ml deionized water
Mixing, obtains mixed liquor；The PTFE emulsion of 65ml is instilled in mixed liquor, sonic oscillation stirs 15min, and 20ml acid is then added
Property SiO2Colloidal sol, 1.2ml chromium complex coupling agent and 2ml m-xylene diamine, sonic oscillation stir 20min, 25 DEG C of standing reactions
1.5h obtains PTFE colloidal sol.
(5) then the matrix 10min that impregnation steps (3) obtain in PTFE colloidal sol is carried out with the pull rate of 5cm/min
At the uniform velocity lifting processing is to form PTFE layers；
(6) matrix for obtaining step (5) is first in 35 DEG C of dry 3h, then in 90 DEG C of heating 10h, obtains with a thickness of 30 μm
PTFE layers.After measured, PTFE layers of surface roughness is 0.5 μm of Ra, and PTFE layer surface is smooth, even film layer, does not occur miscellaneous
Point；The contact angle of the non-sticking lining of formation is 120 °.
Embodiment 4
According to the method for embodiment 1, unlike, the condition of the plasma spraying processing includes: that spray power is
35kW, spray distance 70mm, spray angle are 62 ° ± 1 °, spraying current 650A, and coating thickness is 200 μm；Main gas is argon
Gas, auxiliary gas are hydrogen, hydrogen flowing quantity 4L/min, argon flow 48L/min.After measured, aluminium oxide and titanium oxide is compound
The surface roughness of coating is 3 μm of Ra；The contact angle of the non-sticking lining of formation is 112 °.
Embodiment 5
According to the method for embodiment 1, unlike, plasma spraying processing is carried out using alumina powder.After measured, oxygen
The surface roughness for changing aluminized coating is 6.5 μm of Ra；The contact angle of the non-sticking lining of formation is 118 °.
Embodiment 6
According to the method for embodiment 1, unlike, plasma spraying processing is carried out using titanium dioxide powder.After measured, oxygen
The surface roughness for changing titanium coating is 6.8 μm of Ra；The contact angle of the non-sticking lining of formation is 117 °.
Embodiment 7
According to the method for embodiment 1, unlike, in step (5), impregnation steps (3) obtain in PTFE colloidal sol base
Then body 3min carries out at the uniform velocity lifting processing with the pull rate of 8cm/min to form PTFE layers.PTFE layers with a thickness of 8 μm,
After measured, PTFE layers of surface roughness is 1.5 μm of Ra；The contact angle of the non-sticking lining of formation is 114 °.
Comparative example 1
According to the method for embodiment 1, unlike, the method for non-sticking lining is formed in step (3) are as follows: use common PFA
Powder carry out electrostatic spraying processing, with matrix surface formed PFA non-sticking lining, wherein electrostatic spraying processing condition include:
Powder spray, voltage 35kV are carried out using electrostatic gun, electrostatic induced current is 15 μ A, velocity pressure 0.45MPa, atomizing pressure
For 0.4MPa, spray-on coating is with a thickness of 40 μm, after the completion of spraying, dries in infra-red furnace, dries 10min in 120 DEG C of low-temperature zones,
20min is kept the temperature in 400 DEG C of high temperature sections.
Comparative example 2
PTFE non-sticking lining is sprayed using air pressure spraying method, which includes bottom and surface layer；Base oil includes fluorine
Resin, binder, pigment and auxiliary agent, face oil include fluororesin, abrasion resistant particles and coalescing agent.Specific steps include:
(1) matrix is pre-processed according to (1) the step of embodiment 1；
(2) matrix surface that step (1) obtains is preheated to 85 DEG C；
(3) base oil sprays: spray pressure 0.3MPa, and spray angle is 70 °, spray distance 30cm, and thicknesses of layers is
20 μm, drying temperature is 130 DEG C, keeps the temperature 12min；
(4) face oil sprays: spray pressure 0.4MPa, and spray angle is 70 °, and spray distance is 35 μm, and film thickness is 30 μm,
Baking and curing temperature is 420 DEG C, keeps the temperature 15min.
Comparative example 3
Using the ceramic coated non-sticking lining of air pressure spraying method, which includes bottom and surface layer；Base oil includes viscous
Tying agent, pigment and auxiliary agent, face oil includes silica and aluminium oxide.Specific steps include:
(1) matrix is pre-processed according to (1) the step of embodiment 1；
(2) matrix surface that step (1) obtains is preheated to 60 DEG C；
(3) base oil sprays: spray pressure 0.3MPa, and spray angle is 70 °, spray distance 25cm, and thicknesses of layers is
25 μm, predrying temperature is 70 DEG C, keeps the temperature 10min；
(4) face oil sprays: spray pressure 0.3MPa, spray distance 25cm, and spray angle is 70 °, and thicknesses of layers is
10 μm, 280 DEG C of sintering after the completion of spraying keep the temperature 15min.
Test example
1, the rectangular optical instrument in Shanghai (coating surface hardness: is purchased from using Vickers according to GB/T 9790-1988
Co., Ltd, model HX-1000) each coating of measurement Vickers hardness.It the results are shown in Table 1.
2, the combination between ceramic coating and matrix the binding force between ceramic coating and matrix: is measured according to G9 8642-88
Power.It the results are shown in Table 1.
3, it the binding force between ceramic coating and fluororesin layer: is measured between ceramic coating and fluororesin layer according to G9 8642-88
Binding force.It the results are shown in Table 1.
4, coating porosity coating porosity: is measured according to People's Republic of China (PRC) machinery industry standard JB/T7509-94.
It the results are shown in Table 1.
5, the scratch resistance of coating: the washing water for being 5 weight % with dish washing liquid compound concentration, 3M (7447C) scouring pad are born
Weight 2.5kgf, the one way that swings are 1 time, every 250 replacements scouring pad, check whether coating falls off either after scraping every time
No exposing substrate (to expose >=10 lines as termination test), and record abrasion resistance.It the results are shown in Table 1.
Table 1
It can be seen that the not snearing being prepared using the method for the utility model by the result of table 1 and each embodiment
Layer, bond strength is high, surface hardness is high, scraping and wiping resistance performance is good, wetability is good, and fluororesin layer surfacing, even film layer, no
Miscellaneous point can be generated.
Preferred embodiments of the present invention are described in detail above, still, the utility model is not limited to this.At this
In the range of the technology design of utility model, a variety of simple variants can be carried out to the technical solution of the utility model, including each
Technical characteristic is combined with any other suitable method, these simple variants and combination equally should be considered as the utility model
Disclosure of that belongs to the protection scope of the utility model.
Claims (10)
1. a kind of cookware or baking tray panel, which is characterized in that the cookware or baking tray panel include matrix (1) and non-sticking lining, institute
The group for stating non-sticking lining becomes the ceramic coating (2) and fluororesin layer (3) being sequentially formed on described matrix (1), the ceramics
Coating (2) is the composite coating of aluminum oxide coating layer, titania coating or aluminium oxide and titanium oxide, and the fluororesin layer (3) is
PTFE layers, PFA layers or PTFE and PFA of composite layer.
2. cookware according to claim 1 or baking tray panel, which is characterized in that the ceramic coating (2) be aluminium oxide with
The composite coating of titanium oxide.
3. cookware according to claim 2 or baking tray panel, which is characterized in that in the composite coating, with aluminium oxide and
On the basis of the total weight of titanium oxide, the content of titanium oxide is 3-20 weight %, and the content of aluminium oxide is 80-97 weight %.
4. cookware according to claim 1 or baking tray panel, which is characterized in that the ceramic coating (2) with a thickness of 20-
500μm。
5. cookware according to claim 1 or baking tray panel, which is characterized in that the rough surface of the ceramic coating (2)
Degree is Ra 3-8 μm.
6. cookware according to claim 1 or baking tray panel, which is characterized in that the fluororesin layer (3) with a thickness of 5-
50μm。
7. cookware according to claim 1 or baking tray panel, which is characterized in that the rough surface of the fluororesin layer (3)
Degree is Ra 0.5-1.5 μm.
8. cookware according to any one of claims 1-7 or baking tray panel, which is characterized in that the non-sticking lining
Porosity is 1-3%.
The equipment 9. one kind is cooked, which is characterized in that the equipment of cooking include cookware described in any one of claim 1-8 or
Baking tray panel.
10. equipment according to claim 9 of cooking, which is characterized in that the equipment of cooking is fried for frying pan, frying pan, air
Pot, baking machine, bread producing machine, electric cooker, electric pressure cooking saucepan, soy bean milk making machine or baking tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720688317.8U CN208784484U (en) | 2017-06-14 | 2017-06-14 | Cookware or baking tray panel and equipment of cooking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720688317.8U CN208784484U (en) | 2017-06-14 | 2017-06-14 | Cookware or baking tray panel and equipment of cooking |
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| Publication Number | Publication Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110432786A (en) * | 2019-08-29 | 2019-11-12 | 武汉安在厨具有限公司 | A kind of non-sticking cooking utensils production technology with pottery fluorite coating |
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2017
- 2017-06-14 CN CN201720688317.8U patent/CN208784484U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110432786A (en) * | 2019-08-29 | 2019-11-12 | 武汉安在厨具有限公司 | A kind of non-sticking cooking utensils production technology with pottery fluorite coating |
| CN110432786B (en) * | 2019-08-29 | 2021-04-09 | 武汉安在厨具有限公司 | Cooker with ceramic fluorite coating and production process thereof |
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