CN105111906A - Environment-friendly high-heat-dissipation titanium silver home appliance backing plate - Google Patents
Environment-friendly high-heat-dissipation titanium silver home appliance backing plate Download PDFInfo
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- CN105111906A CN105111906A CN201510571219.1A CN201510571219A CN105111906A CN 105111906 A CN105111906 A CN 105111906A CN 201510571219 A CN201510571219 A CN 201510571219A CN 105111906 A CN105111906 A CN 105111906A
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Abstract
The invention relates to an environment-friendly high-heat-dissipation titanium silver home appliance backing plate. The environment-friendly high-heat-dissipation titanium silver home appliance backing plate is sequentially provided with a titanium silver fine coating, a heat-dissipation linkage layer, a titanium silver pre-coating, a first passivation layer, a galvanized plate, a second passivation layer and a titanium silver back coating from top to bottom; the titanium silver fine coating comprises polyurethane resin, silver powder, zirconium carbide, titanium dioxide and surfactants; the titanium silver back coating comprises epoxy resin, zirconium powder, scandium oxide, titanium carbide and the surfactants; the heat-dissipation linkage layer comprises propylene-ethyl hexyl acrylate copolymer, glycerin, p-methoxybenzoic acid essien ester, silver nanowires and nickel nanowires. According to the environment-friendly high-heat-dissipation titanium silver home appliance backing plate, due to the fact that improvements are conducted on the coating structure of the home appliance backing plate and the coating formula, the corrosion resistance, the high-heat-dissipation property and the anti-aging property of the backing plate are improved, high coating bonding strength can still be maintained for a long time in the damp environment or when the temperature difference is larger, the heat-dissipation efficiency is high, the surface of the coating is not prone to dirt retention, pulverization and cracking do not occur after long time use, and the bubbling phenomenon does not exist.
Description
Technical field
The present invention relates to a kind of household electrical appliances back veneer material, particularly a kind of environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard.
Background technology
Along with the fast development of science and technology, the work-ing life of household electrical appliances also extends thereupon, for refrigerator, the normal service life of the core component compressor of its inside is at least about 10-15, therefore, for a refrigerator, the corresponding work-ing life of all accessories of its inside also should at least reach more than 10 years, otherwise for the compressor of major parts does not have bad, other finding has but damaged, and when a household electrical appliances enter into its end of life, its maintenance cost is very high, many people are also unwilling the expense of deflorating compared with a old household electrical appliances of a large sum of money maintenance, this makes many old household electrical appliances just be dropped in not completely written-off state, virtually cause the waste of resource.Therefore, only should not be directed to kernel component to the research and development of family's electrical accessory, and should be that all component are advanced side by side.
Household electrical appliances backboard is a kind of very common sheet material, is mainly used in the back of household electrical appliances, as the backboard of refrigerator; the backboard of washing machine, these backboards are positioned at the back side of home appliance, not see by people; thus easily ignored by people; but these backboards are the heart areas near household electrical appliances, for the protection of isolated important component, if it damages; when causing, the core component of household electrical appliances is outside exposed; namely be unfavorable for component self, also have certain potential safety hazard, as there is the hazardous conditions such as electric shock.According to the level of modern technologies, the work-ing life of backboard also should at least reach more than 10 years.The backboard of prior art generally can only maintain 3-5; this is not mainly that the quality of the substrate steel sheet of backboard is good not; but the bonding strength of the coating on its surface is not high enough; cracking is started at coatingsurface under the impacts such as long high/low temperature, humidity, dust corrosion; even come off; and after coating shedding; exposed out beginning of steel plate of the inside is got rusty; along with the damage of backboard protective layer; the core component of household electrical appliances inside also correspondingly starts to suffer various erosion; thus start the work-ing life of household electrical appliances to decline, thus, the importance of backboard is self-evident.How to develop the study hotspot that high-quality is durable more backboard also becomes household electrical appliances sheet material supplier.
Summary of the invention
For the deficiencies in the prior art part, the object of the present invention is to provide a kind of environment-friendly type for the daily household electrical appliances such as refrigerator, washing machine height heat radiation titanium silvery white household electrical appliances backboard, it can have higher strength of coating, excellent stable heat dispersion and the work-ing life of overlength.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard, is provided with the smart coating of titanium silvery white, heat radiation connecting layer, titanium silvery white precoated layer, the first passivation layer, galvanized sheet, the second passivation layer and titanium silvery white back coating from top to bottom successively;
The smart coating of described titanium silvery white comprises the material of following weight part:
Described titanium silvery white back coating comprises the material of following weight part:
Described heat radiation connecting layer comprises the material of following weight part:
Preferably, described environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard, wherein, described titanium silvery white precoated layer comprises the material of following weight part:
Preferably, described environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard, wherein, in described propylene acrylic acid monooctyl ester multipolymer, propylene content is 26 ~ 28wt%, and the number-average molecular weight of described propylene acrylic acid monooctyl ester multipolymer is 4000 ~ 4500g/mol.
Preferably, described environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard, wherein, described first passivation layer, the second passivation layer are trivalent chromate epithelium.
Preferably, described environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard, wherein, the length-to-diameter ratio of described nano-silver thread and nanometer nickel wire is 1000 ~ 1200.
Preferably, described environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard, wherein, described heat radiation connecting layer also comprises the molybdic oxide of 0.3 ~ 0.5 weight part.
Preferably, described environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard, wherein, the smart coating of described titanium silvery white also comprises six strontium borides of 0.3 ~ 0.5 weight part.
The invention has the beneficial effects as follows: by the improvement to household electrical appliances backboard coating structure and coating formula, not only do not affect the bending machining performance that backboard self is good, but also make backboard have corrosion-resistant, high heat radiation, anti-aging characteristic, in wet environment or when the larger temperature difference, still can keep higher anchoring strength of coating for a long time, coating is good to the sticking power of base material, not loss of gloss pool, radiating efficiency is high, coatingsurface is laying dust not easily, uses not efflorescence to ftracture for a long time, without foaming phenomena.
Accompanying drawing explanation
Fig. 1 is the structural representation of environment-friendly type of the present invention height heat radiation titanium silvery white household electrical appliances backboard.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to specification sheets word to make those skilled in the art.
Refer to Fig. 1, the structure of environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard is: be provided with the smart coating 1 of titanium silvery white, heat radiation connecting layer 2, titanium silvery white precoated layer 3, first passivation layer 4, galvanized sheet 5, second passivation layer 6 and titanium silvery white back coating 7 from top to bottom successively;
In the prior art, the structure design of most of backboard is directly again be coated with smart coating on precoated layer substantially, the benefit done like this is that operation is few, cost is low, but two-layer like this modified coating directly superposes, the surface stress of coating can be caused to raise, after use 2-3, coating easily starts cracking because expanding with heat and contract with cold, bulge.For this reason, some producer starts to improve this structure, an adhesive layer is increased between precoated layer and smart coating, attempt increases the work-ing life of coating by the strong viscosity of binding agent, but this structure also defectiveness, namely the weathering resistance of binding agent self is poor, and binding agent can dry up sclerosis after long-term use, easily cause adhesive layer to peel off together with whole smart coating, this characteristic is especially embodied on the pressure sensitive adhesive headed by polyacrylic ester.But undeniable, the work-ing life of this backboard at least can be increased to 5-8 by the introducing of adhesive layer, but the service requirements of distance more than 10 years still has a segment distance.
In fact, between two layers of coatings, increase the such thinking of adhesive layer be in the main true macroscopically, but suffer from the bottleneck of prior art, make us cannot seek a kind ofly can stablize the use binding agent of more than 10 years, and, this adhesive layer must can be enough thin, at least reach nano level, otherwise it cannot exist between very thin two layers of coatings.If change a kind of thinking to go to see, totally unnecessary one deck adhesive layer of have to setting up is to increase the bonding strength of coating in fact, and the method increasing bonding strength can have a lot.Coating himself is just provided with good bonding stability after the drying, just when two layers of coatings simple superposition, combination is between layers firm not enough, therefore, if we can erect a bridge block between two layers of coatings, make it as medium, can be connected two layers of coatings well, that just can play the object increasing coating structure stability, we call connecting layer this medium, and it is not binding agent, without full-bodied constraint, it is very thin that it can be coated with.Certainly, although connecting layer is not binding agent, it also has certain viscosifying power, but it is prior, that it by regulating the performance of its own face, can reduce its own face stress, after making coating and its combination than the combination of coating and coating more firmly and stablize.Certainly, it is abundant that the function of connecting layer also can continue through modified optimization to realize expansion, and this case is by the design to connecting layer formula, and common connecting layer is possessed excellent heat dispersion, defines heat radiation connecting layer 2.
The concrete formula of coating and heat radiation connecting layer is as follows:
The smart coating 1 of titanium silvery white comprises the material of following weight part:
This case tensio-active agent used is tensio-active agent conventional in prior art, and therefore this case no longer makes restriction to its concrete kind, as conventional polyvinylpyrrolidone.In this case, the smart coating 1 of titanium silvery white, heat radiation connecting layer 2 and titanium silvery white precoated layer 3 are complementary as an organic whole.Because this case is not the formula of the heat radiation connecting layer going exploitation one new for existing coating, the formula developing new smart coating and precoated layer neither be removed for the formula of existing heat radiation connecting layer, this case is based on this case technical problem to be solved, completely newly have developed the formula that three is complete, therefore, the formula of three has the matching of height, if simply replace certain composition (except tensio-active agent) wherein, has a greatly reduced quality causing final technique effect.Coincidentally, after the composition in coating formula is combined, present distinctive titanium silvery white, improve the aesthetics of coating.
Titanium silvery white back coating 7 comprises the material of following weight part:
Back coating is because distinguish to some extent with the effect of precoated layer, smart coating, and therefore the formula of himself also exists certain difference, the difference of material of main part of most importantly filling a prescription, and namely have employed the epoxy resin that surface stress is less and weather-proof heat dispersion is more excellent.Metal in formula and metal oxide are for improving the scrath resistance of back coating, wear resistance, rotproofness, surface strength, thermal diffusivity, oil resistant cigarette and surperficial laying dust degree.Here back coating is generally the outside surface of household electrical appliances backboard, its towards the outside, smart coating is the internal surface of household electrical appliances backboard, and it is towards the kernel component of household electrical appliances inside.
Heat radiation connecting layer 2 comprises the material of following weight part:
Wherein, propylene is to the modification of polyacrylic acid monooctyl ester, the thermal conductivity of polyacrylic acid monooctyl ester can be improved, reduce the viscosity of polyacrylic acid monooctyl ester, reduce the internal stress of polyacrylic acid monooctyl ester, increase break resistance and the structural strength of polyacrylic acid monooctyl ester, glycerol is mainly used in the collaborative surface bonding strength improving heat radiation connecting layer 2, this is that ethylene glycol cannot realize, and it also has moisture-keeping function simultaneously, ruptures at life-time service or after being exposed to the sun to prevent heat radiation connecting layer.Anisic acid monooctyl ester is mainly used in improving the bonding strength of propylene acrylic acid monooctyl ester multipolymer to metal-powder in coating and metallic compound, to ensure that heat radiation connecting layer can be combined closely with coating, does not loosen for a long time.Further, it is emphasized that the metal-powder that the modified effect of anisic acid monooctyl ester to propylene acrylic acid monooctyl ester multipolymer is only limitted to mention in precoated layer and smart coating and metallic compound, and the metal-powder of not all and metallic compound.Nano-silver thread and nanometer nickel wire are used for the collaborative heat dispersion improving heat radiation connecting layer 2, amazingly be, in the system that propylene acrylic acid monooctyl ester multipolymer and glycerol coexist, waiting under quality condition, the radiating effect that the combination of nano-silver thread and nanometer nickel wire produces is better than single nano-silver thread or nanometer nickel wire at least 3 ~ 5%, this may be because the physical properties of propylene acrylic acid monooctyl ester multipolymer and glycerol self has neutralized heat conductivility difference between nano-silver thread and nanometer nickel wire, makes both can balance to coexist and play a role.
Titanium silvery white precoated layer 3 comprises the material of following weight part:
Wherein, boron oxide not only can increase the bonding strength of itself and connecting layer, can also increase the bonding strength with the first passivation layer 4, thus can increase the structural stability of backboard further; But the prerequisite of this lifting effect is that boron oxide is present in polyester resin system, if be present in other as in urethane, polymeric amide or epoxy resin, then this effect will be affected.The effect of zinc powder is the toughness regulating precoated layer, increases the bonding strength with propylene acrylic acid monooctyl ester multipolymer.Calcium titanate and nickel oxide can increase vibrin hardness after hardening, and calcium titanate than be easier to by containing glycerol propylene acrylic acid monooctyl ester multipolymer wrap up, therefore here their effect reality also comprise increase with heat radiation connecting layer 2 bonding strength.
As another embodiment of this case, wherein, in propylene acrylic acid monooctyl ester multipolymer, propylene content is 26 ~ 28wt%, and the number-average molecular weight of described propylene acrylic acid monooctyl ester multipolymer is 4000 ~ 4500g/mol.Experiment finds, the performance of content to propylene acrylic acid monooctyl ester multipolymer of propylene plays a major role, and its secondary role of the molecular weight of multipolymer, therefore, go from the angle obtaining optimal performance, the content of propylene and the molecular weight of multipolymer all should be defined.If depart from preferred scope, all the degradation of heat radiation connecting layer 2 will be caused.If propylene content is less than 26wt%, then cause the viscosity of multipolymer and viscosity to raise, weathering resistance is deteriorated, and internal stress raises, easily dry and cracked after life-time service, and hardness reduces, and heat radiation connecting layer 2 resistance to impact shock is in the horizontal direction weakened; If propylene content is greater than 28wt%, then cause the surface rigidity of multipolymer to increase, when running into the larger temperature difference or psychrometric difference, easily there is tiny dark line in multipolymer self, treats that the time one long, easily causes loosening or fracture of heat radiation connecting layer 2.
As another embodiment of this case, wherein, the first passivation layer 4, second passivation layer 6 is trivalent chromate epithelium.Trivalent chromate epithelium is environment-friendly type passivation layer, environmentally safe.
As another embodiment of this case, wherein, the length-to-diameter ratio of nano-silver thread and nanometer nickel wire is 1000 ~ 1200.Research finds, the length-to-diameter ratio of nano-silver thread and nanometer nickel wire should be defined because it can have influence on and the compatibility issue of propylene acrylic acid monooctyl ester copolymer systems containing glycerol, namely can mutual tolerance, can be disperseed well; Further, length-to-diameter ratio also can have influence on efficiency and the speed of nano-silver thread and nanometer nickel wire participation heat transfer.
As another embodiment of this case, wherein, the connecting layer 2 that dispels the heat also comprises the molybdic oxide of 0.3 ~ 0.5 weight part.Molybdenum and chromium belong to metal of the same clan, both compatibility are higher, rejection probability is low, therefore, the effect of molybdic oxide is the bonding strength and the durability degree that increase heat radiation connecting layer 2 and trivalent chromate epithelium (passivation layer), to tamp substrate further, from the structural stability of Inner elongate backboard, thus effectively can ensure the work-ing life of backboard.But the addition of molybdic oxide should be limited, and too much unsuitable, if its addition is very few, then cannot produce synergistic improved action; If addition is too much, then by the original particle dispersion structure of destruction heat radiation connecting layer 2, the character making heat radiation connecting layer 2 similarly is more smart coating or precoated layer, but not play real " linking " effect, thus, the stacking of three layers " coatings " is drawn a snake and add feet to it on the contrary, makes rear panel structure more unstable; Moreover, add the also easy generating portion sedimentation in solidification way of excessive molybdic oxide, make more molybdic oxide accumulate in the side of close precoated layer, bring negative impact to backboard performance.
As another embodiment of this case, wherein, the smart coating 1 of titanium silvery white also comprises six strontium borides of 0.3 ~ 0.5 weight part.For the back veneer material of family expenses, corrosion factor faced by it is main is dust, oil smoke, the temperature difference, psychrometric difference, ultraviolet rays corrosion, and the effect of six strontium borides is: the toughness 1) increasing smart coating, to improve its tear resistance to the larger temperature difference and larger psychrometric difference, prevent the generation having dark line at coat inside; 2) object of smart coating to the corrosion resistance of dust and oil smoke is improved by suppressing dust or oil smoke to reach at the probability that coatingsurface forms small galvanic cell; 3) ageing resistance of smart coating under solar exposure is increased.Certainly, for component balanced protection coexisted each in whole smart coating system, the addition of six strontium borides should be defined, and 0.3 ~ 0.5 weight part is that six strontium borides can be added and normally can play the optimized scope of improved action.Originally just very exquisite " monarch ", the quantitative change of a component often can cause qualitative change to the formula of coating, and in the present embodiment, six strontium borides especially can embody this point.
When producing, galvanized sheet is first through washing passivation again, subsequently each layer component is taken in proportion, solvent is made with ethyl acetate or toluene, dissolve mixing, carry out gradation coating in the mode of roller coat or brushing by project organization subsequently, dry at 110 ~ 130 DEG C after each coating and namely form stable single-layer coating structure.
The household electrical appliances backboard pencil hardness > 2H that this case is obtained, pliability test < 1T, binding strength of coating is greater than 3.5MPa/20 DEG C; Backboard respectively through 5wt% hydrochloric acid and 5wt% sodium hydroxide test 72 hours non-foaming, non-corrosive, does not peel off; Unchanged through 30W uv irradiating 72 hours surface colors, coating is not hardening or ftracture; Through dust deposit (0.1mg/cm
2) place 90 days afterwards, there is not corrosion phenomenon in coatingsurface; With the speed of-20 ~ 80 DEG C/h transformation temperature repeatedly, after 72 hours, coatingsurface does not cave in, does not occur crackle, does not come off; With 30% ~ 100%/hour speed repeatedly convert humidity, after 72 hours coatingsurface do not occur evidence of corrosion, softening, there is not aberration.The thermal conductivity of back plate surface is 10 ~ 12W/mK.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (7)
1. an environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard, is characterized in that, is provided with the smart coating of titanium silvery white, heat radiation connecting layer, titanium silvery white precoated layer, the first passivation layer, galvanized sheet, the second passivation layer and titanium silvery white back coating from top to bottom successively;
The smart coating of described titanium silvery white comprises the material of following weight part:
Described titanium silvery white back coating comprises the material of following weight part:
Described heat radiation connecting layer comprises the material of following weight part:
2. environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard according to claim 1, it is characterized in that, described titanium silvery white precoated layer comprises the material of following weight part:
3. environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard according to claim 1, it is characterized in that, in described propylene acrylic acid monooctyl ester multipolymer, propylene content is 26 ~ 28wt%, and the number-average molecular weight of described propylene acrylic acid monooctyl ester multipolymer is 4000 ~ 4500g/mol.
4. environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard according to claim 1, it is characterized in that, described first passivation layer, the second passivation layer are trivalent chromate epithelium.
5. environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard according to claim 1, it is characterized in that, the length-to-diameter ratio of described nano-silver thread and nanometer nickel wire is 1000 ~ 1200.
6. environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard according to claim 1, it is characterized in that, described heat radiation connecting layer also comprises the molybdic oxide of 0.3 ~ 0.5 weight part.
7. environment-friendly type height heat radiation titanium silvery white household electrical appliances backboard according to claim 1, it is characterized in that, the smart coating of described titanium silvery white also comprises six strontium borides of 0.3 ~ 0.5 weight part.
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| CN201510571219.1A CN105111906B (en) | 2015-09-10 | 2015-09-10 | The high radiating titanium silvery white household electrical appliances backboard of environment-friendly type |
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| CN201510571219.1A CN105111906B (en) | 2015-09-10 | 2015-09-10 | The high radiating titanium silvery white household electrical appliances backboard of environment-friendly type |
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| CN105491423A (en) * | 2016-01-18 | 2016-04-13 | 广东富胜实业有限公司 | Long-service-life and high-heat-radiation-performance set-top-box |
| CN105505207A (en) * | 2016-01-18 | 2016-04-20 | 广东富胜实业有限公司 | High-strength environment-friendly television backboard |
| CN106224077A (en) * | 2016-08-29 | 2016-12-14 | 江苏嘉和热系统股份有限公司 | A kind of radiator core body for vehicle |
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