CN107972331B - A kind of preparation method of automobile thermal insulation, sun-shade pad - Google Patents
A kind of preparation method of automobile thermal insulation, sun-shade pad Download PDFInfo
- Publication number
- CN107972331B CN107972331B CN201711301148.9A CN201711301148A CN107972331B CN 107972331 B CN107972331 B CN 107972331B CN 201711301148 A CN201711301148 A CN 201711301148A CN 107972331 B CN107972331 B CN 107972331B
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- China
- Prior art keywords
- sun
- thermal insulation
- coating
- heat
- resistant layer
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- Expired - Fee Related
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Classifications
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
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Abstract
The invention discloses a kind of preparation methods of automobile thermal insulation, sun-shade pad, the following steps are included: step 1, braiding high-strength yarn, aramid fiber is merged into twisting into high-strength yarn for 2:1 according to mass percent with polyester fiber, high-strength yarn is then woven into tear resistant layer；Obtained tear resistant layer is immersed in silica solution by step 2, is then allowed to stand carry out gel, and taking-up, which is put into 60 DEG C of thermostatic drying chambers, after 10h is dried, and the tear resistant layer after obtaining Gel Treatment is spare；Step 3, the face jet-plating metallization reflectance coating in tear resistant layer, then spray fluorocarbon varnish on the metallic reflective coating of formation, spare and etc. after dry.Thermal insulation, sun-shade pad significant effect produced by the present invention can make vehicle interior temperature maintain 36 DEG C or less (generally at 33 DEG C or so) at 30 DEG C of temperature, vehicle body temperature maintains 39 DEG C or less (generally at 35 DEG C or so), and overall thickness is no more than 1cm, foldable, carry easy to use, application easy to spread.
Description
The application is title are as follows: a kind of automobile thermal insulation, sun-shade pad, application No. is: 201610814021.6 patent of invention
Divisional application, parent application day be on 09 09th, 2016.
Technical field
The present invention relates to automobile sun-shadings to pad technical field, in particular to a kind of preparation method of automobile thermal insulation, sun-shade pad.
Background technique
For automobile as people's outdoor activities tool, the probability by extraneous strong illumination is very high, and the time is especially long, especially
It is the arriving with torridity summer, the vehicle of many people is parked on open parking ground, by being exposed to the sun, when people turn again to car
When, vehicle interior temperature is odd high, and people can not endure at all, by field observation, in Sichuan Province, sunny one day, Chengdu, works as the external world
When temperature is 32 DEG C, after the automobile of no sun-shade cushion is parked in open parking ground 1 hour, with thermometer measure vapour vehicle interior temperature, survey
Testing result is, interior cabin temperature reaches 65 DEG C, is higher by 33 DEG C than outside air temperature, and at this temperature, people can only first open
Interior air-conditioning could into the car after for a period of time, this not only time consumption and energy consumption source, can also happen suddenly fortuitous event, and dizziness is caused to vomit
It spits or even falls in a swoon, the harm such as self-burning of vehicle, meanwhile, through testting, the temperature of automobile metal body portion can reach 75 DEG C or more, pole
Easily cause scald.
Therefore, in recent years it has been developed that various types of products are used for automobile cooling, mainly with awning, glass
Heat insulation type adhering film and thermal insulation, sun-shade pad are main product, and since thermal insulation, sun-shade pad carries and uses conveniently, price is lower, heat insulation
It is good, like by people always.It is claimed according to certain famous thermal insulation, sun-shade pad manufacturing enterprise, after thermal insulation, sun-shade pad, automobile interior exterior
Temperature difference within 12 DEG C, generally between 6-7 DEG C, i.e., when outdoor temperature be 32 DEG C when, be capped with thermal insulation, sun-shade pad
For temperature in automobile generally at 38 DEG C or so, highest does not exceed 44 DEG C, has outstanding heat insulation.
But the existing automobile heat insulation sun-shade cushion used remains not perfect place, heat-insulated approach can only be by anti-
Sunlight is penetrated to realize, and cooling cannot be thermally shielded to vehicle body, therefore there is also the larger rising spaces for its heat-insulating capability.Namely
It is to say, existing thermal insulation, sun-shade pad often has ignored the heat absorption of vehicle body itself, even if vehicle interior temperature differs 6 DEG C with outside air temperature, gold
The temperature for belonging to vehicle body then at least differs 13 DEG C or more, especially black paint vehicle body, and temperature can reach 20 DEG C of difference, still suffer from
A possibility that scalding, heat insulation need to be improved.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, providing a kind of system of automobile thermal insulation, sun-shade pad
Preparation Method, with bad, the interior and higher problem of vehicle body temperature that solves existing thermal insulation, sun-shade pad heat insulation.
The technical solution adopted by the invention is as follows: a kind of automobile thermal insulation, sun-shade pad, is successively bonded with metal from top to bottom
Reflectance coating, tear resistant layer, mineral wool structure sheaf and flexible heat-conducting layer, one side of the metallic reflective coating far from tear resistant layer uniformly coat
Have fluorocarbon varnish, tear resistant layer is woven with high-strength yarn, mineral wool structure sheaf with flexible heat-conducting layer is Nian Jie sets on one side
There are several cone substrates, phase-change material is full of in cone substrate, flexible heat-conducting layer is Nian Jie with mineral wool structure sheaf by adhesive coating.
Due to the setting of above structure, metallic reflective coating for reflecting back most sunlights, use by fluorocarbon varnish
In protection metallic reflector；On the one hand tear resistant layer is used to improve the mechanical strength and durability of thermal insulation, sun-shade pad, on the other hand
Energy for obstructing sunlight carrying infiltrates into inside thermal insulation, sun-shade pad, and then plays heat-blocking action；Mineral wool structure sheaf one
Aspect is for heat-insulated, on the other hand for providing storage organization and fixed flexible heat-conducting layer for phase-change material；Flexible heat-conducting layer is used
In carrying out heat radiator to vehicle body, to reduce the temperature in vehicle society；Phase-change material layers for reducing flexible heat-conducting layer heat dynamic
Equilibrium temperature keeps cooling effect more significant.
Further, high-strength yarn is twisted by aramid fiber and polyester fiber merging, wherein aramid fiber and terylene
The mass percent of fiber is 2:1.
Further, adhesive coating is covered in the one side with cone substrate of mineral wool structure sheaf.
Further, cone substrate is conic tower type dome structure, is evenly distributed on mineral wool structure sheaf, the height for boring substrate is
0.2-5mm。
Further, fluorocarbon varnish coating thickness is 150-300 μm, and metallic reflective coating sputter is flexible with a thickness of 50-150 μm
Heat-conducting layer with a thickness of 0.6-1mm.
Further, flexible heat-conducting layer is made of flexible heat-conductive coating, and flexible heat-conductive coating is by weight by following raw material
Composition: 38 parts of organosilicon modified crylic acid resin, 8 parts of expanded graphite, 14 parts of heat conducting fiber silk, 6 parts of mica powder, transition metal is multiple
Close 6 parts of oxide powder, 10 parts of butyl acetate, 0.7 part of fumed silica, 15 parts of diacetone alcohol, 1.3 parts of dispersing agent and levelling
0.7 part of agent.
Further, phase-change material is solid-liquid phase change material, and the phase transition temperature of solid-liquid phase change material is 31-36 DEG C.
The invention also includes a kind of preparation methods of automobile thermal insulation, sun-shade pad, comprising the following steps:
Step 1, braiding high-strength yarn, by 42-58 root aramid fiber and 21-29 root polyester fiber according to mass percent
Merge twisting into high-strength yarn for 2:1, high-strength yarn is then woven into tear resistant layer；
Obtained tear resistant layer is immersed in silica solution by step 2, is then allowed to stand carry out gel, is taken out after 10h and be put into 60
It is dried in DEG C thermostatic drying chamber, the tear resistant layer after obtaining Gel Treatment is spare；
Then step 3, the face jet-plating metallization reflectance coating in tear resistant layer spray fluorine carbon on the metallic reflective coating of formation
Varnish, it is spare after dry；
Mineral wool is pressed into mineral wool structure sheaf of the one side with cone substrate by step 4, manufacture mineral wool molding die,
It is spare；
Step 5, the face spray containment glue that cone substrate is had in mineral wool structure sheaf, and on the face of mineral wool structure sheaf
One layer of sealant is formed, it is spare after dry；
Step 6, manufacture solid-liquid phase change material, become liquid phase for solid-liquid phase change material heating and are placed on mineral wool structure sheaf
Cone substrate in, wherein bore intrabasement liquid phase phase-change material depth be no more than cone substrate height, then by glass cotton knot
Structure is placed on that vacuum tank is hollow to be cooled to room temperature；
Step 7 manufactures flexible heat-conductive coating, organosilicon modified crylic acid resin and dispersing agent is added in reactor, so
Mixed component is stirred up to being uniformly dispersed with the revolving speed of 800r/min with blender afterwards, base-material is obtained, then to base-material
In sequentially add carbon fiber wire, expanded graphite, mica powder, fumed silica, compound transition metal oxide powder, then plus
Enter butyl acetate and diacetone alcohol, mixture is sufficiently stirred with blender, mixing speed 1000r/min, until point
It dissipates uniformly, obtains initial point；
Metal fiber wire and levelling agent are added in the initial point of step 7 step 8, after being uniformly dispersed with dispersion machine
To uncured coating, uncured coating is pumped into the storage tank of air gun, is then sprayed on step 6 with air gun
One side of the obtained mineral wool structure sheaf with cone substrate, stands to coating levelling, is put into high temperature oven vacuum at 140 DEG C
Baking-curing film forming, then keeps the temperature 10min again, cools to room temperature with the furnace, obtain initial thermal insulation, sun-shade pad；
Step 9, tear resistant layer that step 3 obtains is obtained with step 7 without the one side of metallic reflective coating it is initial heat-insulated
Sun-shade cushion be adhesively fixed without the one side of flexible heat-conductive coating with binder after to get to thermal insulation, sun-shade pad.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, thermal insulation, sun-shade of the invention pad raw material sources are extensive, and it is convenient that the processing is simple, and manufacturing cost is low, are suitable for industrial big
Large-scale production；
2, tear resistant layer is worked out with high-strength yarn, can greatly improve the mechanical strength of thermal insulation, sun-shade pad, simultaneously
After tear resistant layer is impregnated with silica solution, it is filled with Silica hydrogel in gap, there is significant heat-proof quality, flame retardant property and prevents
Aqueous energy, improves the quality of thermal insulation, sun-shade pad on the whole；
3, the setting of flexible heat-conducting layer and phase-change material, makes thermal insulation, sun-shade pad not only have the function of thermal insulation, sun-shade, also has
There is heat radiator effect, the temperature of vehicle body can be greatly reduced, the temperature of vehicle body is made to maintain the wind for avoiding scald compared with low state
Danger, further improves the performance of thermal insulation, sun-shade pad；
4, thermal insulation, sun-shade of the invention pad significant effect can make vehicle interior temperature maintain 36 DEG C or less at 30 DEG C of temperature
(generally at 33 DEG C or so), vehicle body temperature maintain 39 DEG C or less (generally at 35 DEG C or so), and overall thickness is no more than 1cm, can roll over
It is folded, carry easy to use, application easy to spread.
Detailed description of the invention
Fig. 1 is a kind of thermal insulation, sun-shade mat structure schematic diagram of the invention；
Fig. 2 is the partial structurtes enlarged diagram of part A in Fig. 1；
Fig. 3 is flexible heat-conducting layer Part portions structure enlargement diagram.
Marked in the figure: 1 is fluorocarbon varnish, 2 be metallic reflective coating, and 3 be tear resistant layer, and 4 be mineral wool structure sheaf, and 5 be phase
Become material, 6 be flexible heat-conducting layer, and 61 be metal fiber wire, and 62 be carbon fiber wire, and 63 be expanded graphite, and 64 is multiple for transition metal
Oxide powder is closed, 7 be adhesive coating.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one
As depicted in figs. 1 and 2, a kind of automobile thermal insulation, sun-shade pad is successively bonded with metallic reflective coating 2 from top to bottom, resists
Tearing layer 3, mineral wool structure sheaf 4 and flexible heat-conducting layer 6, metallic reflective coating 2 are uniformly coated with fluorine far from the one side of tear resistant layer 3
Carbon varnish 1, tear resistant layer 3 are woven with high-strength yarn, mineral wool structure sheaf 4 with flexible heat-conducting layer 6 is Nian Jie sets on one side
There are several cone substrates, phase-change material 5 is full of in cone substrate, flexible heat-conducting layer 6 is viscous by adhesive coating 7 and mineral wool structure sheaf
It connects.
Mineral wool structure sheaf 4, mineral wool has thermal insulation function well, while also having toughness and stabilization well
Property, when this is used for thermal insulation, sun-shade pad, good heat insulation and preservation effect on the one hand can be played, on the other hand can be enhanced heat-insulated
The mechanical property of sun-shade cushion, it is more stable to be allowed to structure, is not susceptible to deform.The one side setting cone substrate of mineral wool structure sheaf 4
Cause be, on the one hand make bore substrate in fill phase-change material 5, on the other hand make bore substrate protrusion part and flexible heat-conducting layer
6 connections, flexible heat-conducting layer 6, which is firmly combined, to be not easily disconnected from.Furthermore, cone substrate is conic tower type dome structure, is uniformly divided
For cloth on mineral wool structure sheaf 4, it is preferably 0.2mm that the height for boring substrate, which is 0.2-5mm(, and 0.2mm or 5mm also may be selected).
Tear resistant layer 3 is woven with high-strength yarn, and high-strength yarn merges twisting by aramid fiber and polyester fiber
It forms, aramid fiber has the features such as elongation is high, and pulling force is strong, thermal resistance and acid-alkali resistance, and terylene is high with intensity, elasticity is good, heat-resisting resistance to
The features such as soda acid, the two was applied in combination, and had complementary advantages, and making high-strength yarn not only has good stability, also had height
The elasticity and tear resistance of intensity, intensity is high, not tearable.Furthermore, the quality hundred of aramid fiber and polyester fiber
Divide than being 2:1, so that high-strength yarn mainly has the advantageous feature of aramid fiber.
Flexible heat-conducting layer 6, to carry out heat radiator to vehicle body, reduces the temperature of vehicle body, more for directly contacting with vehicle body
It further says, flexible heat-conducting layer 6 is made of flexible heat-conductive coating, and flexible heat-conductive coating is by weight by following raw material group
At: 34-39 parts of organosilicon modified crylic acid resin, 7-9 parts of expanded graphite, 12-15 parts of heat conducting fiber silk, 6-8 parts of mica powder, mistake
Cross 5-7 parts of metal compound oxide powder, 9-11 parts of butyl acetate, 0.5-1 parts of fumed silica, 12-17 parts of diacetone alcohol,
1-1.5 parts and levelling agent 0.5-1 parts of dispersing agent.
In the present embodiment, flexible heat-conductive coating can be made of the raw material of following parts by weight: by weight by following original
Material composition: 34-39 parts of organosilicon modified crylic acid resin, 7-9 parts of expanded graphite, 12-15 parts of heat conducting fiber silk, mica powder 6-8
Part, 5-7 parts of compound transition metal oxide powder, 9-11 parts of butyl acetate, 0.5-1 parts of fumed silica, diacetone alcohol 12-
17 parts, 1-1.5 parts and levelling agent 0.5-1 parts of dispersing agent；Flexible heat-conductive coating can also be made of the raw material of following parts by weight: organic
39 parts of fluorine-silicon modified acrylic resin, 9 parts of expanded graphite, 15 parts of heat conducting fiber silk, 8 parts of mica powder, compound transition metal oxide
7 parts of powder, 11 parts of butyl acetate, 1 part of fumed silica, 17 parts of diacetone alcohol, 1.5 parts and 1 part of levelling agent of dispersing agent；As
It is preferred that flexible heat-conductive coating is made of following raw material by weight: 38 parts of organosilicon modified crylic acid resin, expanded graphite 8
Part, 14 parts of heat conducting fiber silk, 6 parts of mica powder, 6 parts of compound transition metal oxide powder, 10 parts of butyl acetate, gas phase titanium dioxide
0.7 part of silicon, 15 parts of diacetone alcohol, 1.3 parts and 0.7 part of levelling agent of dispersing agent.
Among the above, organosilicon modified crylic acid resin is copolymerized by vinylic organosiloxane monomer and acrylic ester monomer
It forms, with performances such as outstanding high temperature resistant, weatherability, good slightly flexible and strong adhesive force, this is used to lead as flexibility
The base-material of hot coating can make base-material have good thermally conductive, flexible and stability, and in the present embodiment, selection contains hydroxyl
Silicone modified acrylic resin, admittedly containing 50%, silicon contains 40%.
Expanded graphite, as thermally conductive reinforced filling, since it is with excellent thermal conductivity and flexibility, in the present embodiment
It is mainly used to, to form thermally conductive " terminal ", so that the heat in flexible heat-conductive coating is discharged rapidly as heat-conducting block, increase
The heat dissipation performance of strong flexibility heat-conductive coating.Preferably, expanded graphite select little particle expanded graphite, mesh number more than 325 mesh,
It is advisable below 400 mesh.
Heat conducting fiber silk, heat conducting fiber silk include metal fiber wire and carbon fiber wire, metal fiber wire and carbon fiber wire
Mass percent is 4:1, after two different kinds of heat conducting fiber silk is blended, can not only improve it is filametntary be uniformly distributed, also
It can be further formed the network thermal conducting path of three-dimensional shape, as shown in figure 3, being main channel with long and thin metal fiber filament 61, with carbon fiber
Tieing up silk 62 is tributary and overlap joint bridge, can be formed in coating continuous continual network-like " thermally conductive route ", coating by
When heating, heat can be scattered in coating everywhere by heat conducting fiber silk latticed in coating, and heat is all with coating after being dispersed
It encloses object and heat exchange occurs, and then reach heat dissipation purpose, the comprehensive of long and short fiber silk uses, and overcomes the fiber filament of single specification
Easily occur overlapping the problem of blind area and dispersion unevenness, solves network-like fiber and form the difficult and easy breakpoint of network-like fiber, do not connect
Continuous technological difficulties, meanwhile, the three-dimensional mesh fiber filament of formation additionally aids the increase of coating flexibility, make coating by
When stretching, compress, expanding with heat and contract with cold, the defects of being less prone to cracking, fold, crackle, compressed shape variability is extremely low, the base-material after solidification
It is not easily to fall off, stability enhancing.
In the present embodiment, metal fiber wire 61 can for brass fiber, stainless steel fibre, carbon steel fiber, aluminum fiber and
Aluminum alloy fiber is one such or several mixing, preferably the preferable brass fiber of heating conduction, more specifically, brass fiber
Filament diameter should be between 40-80 μm, with 50-60 μm for main filament diameter, draw ratio 40-60:1, to ensure brass fibre
Dimension silk has the performances such as thermally conductive, toughness good enough.Carbon fiber wire is thin short asphalt-based carbon fiber silk, and filament diameter is 10-15 μ
M, draw ratio 2-3:1, to ensure that carbon fiber wire can form good overlap joint bridge between brass fiber silk.
Mica powder can form substantially parallel orientations under the action of surface tension in coating, obstruct corrosivity
The infiltration to the flexible heat-conducting layer of formation such as substance such as water, machine oil, improves the corrosion resistance of coating, while mica powder can be with
Bear tensile stress, increase the adhesive force of coating, improve coating heat radiation and mechanical performance, the addition of mica powder, moreover it is possible to it is thermally conductive
Fiber acts synergistically, and reduces stress suffered by heat conducting fiber, the trend that heat conducting fiber is fallen off is reduced, in the present embodiment
In, sericite in powder is preferably used, first is that mica powder plays the best use.
Butyl acetate and diacetone alcohol are used as solvent in the present embodiment, can guarantee film-formation result when coating is dry,
Compared to single solvent, two kinds of solubility parameters are close, and the effect that can achieve mutual supplement with each other's advantages is blended with solvent similar in boiling point, gram
The intrinsic disadvantage of single solvent is taken, the film-formation result of coating is made to be easier to be protected, success rate is high.Fumed silica is at this
Anti-settling agent is used as in embodiment, fluffy powder shape, porous fumed silica can effectively improve the suspension of filler in coating,
The generation for preventing lamination makes coating keep good stability.Used in the process of dispersing agent is dispersed with stirring for reduction
Time enables mixture to be uniformly dispersed as early as possible, selects BYK-ATU dispersing agent in the present embodiment, levelling agent is for avoiding forming a film
There is phenomena such as shrinkage cavity, be a kind of polyacrylate solution, selects BYK-355 levelling agent.
Compound transition metal oxide powder 64 is used as heat-absorbing material in the present embodiment, and absorptance can reach 0.91,
Transmitting ratio is about 0.4, has very strong heat absorption capacity, after compound transition metal oxide powder 64 is evenly dispersed, in coating
Several heat sinks are formed, each heat sink is similar to " absorption heat pump ", the heat of surrounding is largely sucked, and then passes through thermally conductive fibre
It ties up silk and heat is transported in coating everywhere, make not will form amount of localized heat concentration phenomenon inside and outside coating, coating is heated evenly, heat absorption
Ability improves, so that coating stability is more preferable.As shown in figure 3, expanded graphite 63, compound transition metal oxide powder
64, three dimentional heat conduction network is collectively formed in metal fiber wire 61 and carbon fiber 62, in two-dimensional diagram, elongated metal fiber wire 61
It is overlapped to form basic rack, since, there are more overlap joint blind area, basic rack is more multibreak to possess between long and thin metal fiber filament 61
The basic rack of point, it is evenly dispersed at the overlap joint blind area of basic rack to have overlapped a thin short carbon fiber silks 62 several mutually, one
Point thin short carbon fiber silk 62 connects the basic rack of breakpoint, and most of breakpoint of basic rack is switched on, another part carefully short carbon
Fiber filament 62 and expanded graphite 63 and compound transition metal oxide powder 64 overlap, and pass through expanded graphite 63 and transition metal
Composite oxide power 64 connects basic rack indirectly, has generally formed uninterruptedly three dimentional heat conduction network.
Further, compound transition metal oxide can be FeMnCuO2、FeMnCuO3、FeMnCuO4、FeMnCuO5With
FeCuO5One such or several blendings, preferably FeCuO5。
Among the above, flexible heat-conductive coating preparation and application the following steps are included:
Organosilicon modified crylic acid resin and BYK-ATU dispersing agent are added in reactor step 1, then use blender
Mixed component is stirred up to being uniformly dispersed with the revolving speed of 800r/min, obtains base-material；
Step 2 sequentially adds asphalt-based carbon fiber silk, little particle expanded graphite, sericite into the base-material that step 1 obtains
Powder, fumed silica, FeCuO5Then powder is added butyl acetate and diacetone alcohol, is filled with blender to mixture
Divide stirring, mixing speed 1000r/min, until being uniformly dispersed, obtains initial point；
Brass fiber silk and BYK-355 levelling agent are added in the initial point of step 2 step 3, are dispersed with dispersion machine equal
Uncured coating is obtained after even, and uncured coating is pumped into the storage tank of air gun, is then sprayed with air gun
On processed substrate (in the present embodiment, substrate is mineral wool structure sheaf) surface, stands to coating levelling, be put into high temperature
Baking oven vacuum bakeout film-forming at 140 DEG C, then keeps the temperature 10min again, cools to the furnace after room temperature to obtain the final product.
Metallic reflective coating has biggish extinction coefficient, and reflectivity is very high, is a kind of outstanding light screening material, and metal is anti-
Film is penetrated for that in thermal insulation, sun-shade pad, can make thermal insulation, sun-shade pad that there is very high reflectivity, reflectivity is close to 1.Further, root
Difference is needed according to people, the metallic reflective coating of selection is also different, such as in the common metal thin material in ultra-violet (UV) band is aluminium, visible
The common metal thin material in light area is aluminium and silver, is gold, silver, copper metal thin material in infrared region common used material, in the present embodiment
In, consider to be used to reflected sunlight accident at metallic reflective coating, reflectance coating is also needed to have the function of weakening infrared energy, it is comprehensive
Consider, metallic reflective coating can select silver, aluminium, copper etc., preferably use silver metal thin material；Furthermore, metallic reflection is adopted
It is plated in tear resistant layer with the mode of sputter, (preferably 100 μm, also can choose 50 μm or 150 to sputter with a thickness of 50-150 μm
μm).
Fluorocarbon varnish has the characteristics that excellent weatherability, resistance to persistence, scratch resistance, flexibility, anti-corrosion and adhesive force are strong,
Make a kind of good cover protective coating, since fluorocarbon varnish is that clear dope will not when being coated on metallic reflective coating
Corrosion and destruction metallic reflective coating, while will not influence the reflectivity of metallic reflective coating, metallic reflective coating is protected well,
In the present embodiment, the coating thickness of fluorocarbon varnish is 150-300 μm (preferably 180 μm, also can choose 150 μm or 300 μm).
The setting of phase-change material 5 can play the role of auxiliary flexible heat-conducting layer heat radiator, be conducive to flexible heat-conducting layer and inhale
Hot radiation processes, by the function of phase-change material accumulation of heat, absorb soft when self-temperature is higher not in time for the heat dissipation of flexible heat-conducting layer
Property heat-conducting layer heat, reduce flexible heat-conducting layer temperature, and then play the heat radiator ability of flexible heat-conducting layer again, phase
When becoming material accumulation of heat to critical value, phase-change material no longer absorbs heat, and withdraws thermal insulation, sun-shade pad at this time, flexible heat-conducting layer is due to no longer inhaling
Hot temperature reduces rapidly, and phase-change material discharges accumulation of heat, and outwardly distributes heat by flexible heat-conducting layer, until restoring initial state
(solid-like) is realized and is recycled in case continuing to use next time.
In order to make phase-change material have above-mentioned function, phase-change material is solid-liquid phase change material, the phase of solid-liquid phase change material
Temperature is 31-36 DEG C, and furthermore, solid-liquid phase change material is made up of by mass percentage: expanded graphite 7%,
Binary eutectic fatty acid 87%, porous magnesia 2%, porous polyester fiber 2%, carboxymethyl cellulose 2%, wherein binary eutectic
Fatty acid is blended by lauric acid and myristic acid.Design binary eutectic fatty acid is phase-transition heat-storage matrix, due to laurel
Acid and myristic acid have it is cheap and easy to get, property stablize, it is almost non-toxic, it is environmentally friendly and renewable the features such as, binary eutectic fat
Acid is blended by lauric acid and myristic acid, and the phase transition temperature of the eutectic object formed after blending is suitable for meeting current demand (altogether
Phase transition temperature is at 20-50 DEG C after mixed), furtherly, in the present embodiment, it is desirable that obtained after lauric acid and myristic acid blending
Binary eutectic fatty acid phase transition temperature at 31-36 DEG C, latent heat of phase change 141-167J/g, phase transition temperature is selected in 31-
36 DEG C of cause is that the hot dynamic equilibrium temperature general control of body of a motor car and heat absorbing coating exists after mainly considering cooling
31-36 DEG C is more suitable for, it is preferable that by the control of hot dynamic equilibrium temperature at 33 DEG C, the influence of vehicle body temperature can be ignored not
Meter, geological measuring ratio corresponding to lauric acid and myristic acid is 58:42, phase transformation in the phase transition temperature of binary eutectic fatty acid at this time
Temperature is 33 DEG C or so, latent heat of phase change 151J/g.
Expanded graphite is common organic phase-change material, has a compatibility well with fatty acid organic matter, fatty acid/
In expanded graphite-based phase change composite material, the maximum adsorption quality of expanded graphite is up to 80%, and fatty acid is when undergoing phase transition, almost
Liquid leakage will not occur, there is very strong stability.But fatty acid/expanded graphite-based phase change composite material can only not by
To outstanding stability is just able to maintain in the case where greater impact power and bending power, when fatty acid/expanded graphite-based phase transformation is multiple
When condensation material is by greater impact power and bending power while folding (such as heat insulating mattress), in expanded graphite, the ground square hole that is stretched
Porosity can become larger, and easily be detached from for the fatty acid of liquid, can be become smaller by the local porosity compressed, be full of in gap
Interior liquid can be extruded and then lose adherence, and liquid flowing can occur for these liquid fatty acids for being detached from expanded graphite, into
And so that phase-change material layers is wrecked and ineffective, it therefore, in the present embodiment joined auxiliary shaping adsorbate porous oxidation
Magnesium and porous polyester fiber, porous magnesia have outstanding meso pore characteristics, and liquid fatty acid can sufficiently be adsorbed on porous oxygen
Change in magnesium matrix, after porous magnesia is mixed in binary eutectic fatty acid, when phase-change material layers are by impact force and bending power,
A large amount of porous magnesias are flooded in fatty acid to form liquid stream, the porous magnesia of these free shapes is that liquid stream fatty acid mentions
Point is adsorbed for mobile, and then increases the viscosity of liquid stream, prevents the trend of phase-change material layers malformation to a certain extent,
And then the problem of effectivelying prevent phase-change material laminar flow to leak, while in order to further be fully solved change material layer flowing leakage
Problem, also added porous polyester fiber in phase-change material layers, and porous polyester fiber not only can be with, moreover it is possible to amount of stored heat is improved,
Phase-change material layers are made to play optimum efficiency.
Porous magnesia and porous polyester fiber composite use, and in the phase-change material layers of formation, act synergistically, when
When solid fatty acid is undergone phase transition, free porous magnesia is mobile with liquid stream, porous polyester fiber will keep off obtain it is free
Porous magnesia further increases the viscosity of liquid stream, shows as on the whole, when phase-change material layers are undergone phase transition, the liquid of formation
Body is gathered in part since viscosity is big, not will form liquid stream, and then maintain the stable structure of phase-change material layers.Meanwhile phase
For change material layer when being stretched and impacting, the combined use of grain shape and fiber shape increases the tough of phase-change material layers
Property, tearing toughness and fatigue resistance, enable phase-change material layers to bend, improve its adaptability.
Furthermore, porous magnesia the preparation method comprises the following steps: weighing the triblock polymer F-127 template of design flow
Dehydrated alcohol and magnesium nitrate hexahydrate is added in reactor in agent, then is placed under vacuum environment and is stirred 10-15h, then will
Solution is put into drying in 50 DEG C of thermostatic drying chambers, is put into box resistance until sample is colloidal, then by obtained colloid
It is calcined in furnace in 450 DEG C, heating rate control is 2 DEG C/min, and 8h is calcined under air conditions, 2h is kept the temperature after calcining, so
After cool to room temperature with the furnace to obtain the final product.
The preparation method of above-mentioned solid-liquid phase change material the following steps are included:
Step 1, by under normality lauric acid and myristic acid be by mass percentage 58:42 ratio taken amount, then in
It is uniformly mixed in reactor, seals reactor and is kept the temperature in 80 DEG C of baking oven, until lauric acid and Pork and beans in reactor
Cool acid all melts, and then takes out and is uniformly mixed with blender, obtains binary eutectic fatty acid mixed solution；
Binary eutectic fatty acid mixed solution is placed in ultrasonic water bath pot by step 2, in 60 DEG C to binary eutectic rouge
Fat acid mixed solution carries out ultrasonic vibration 4min, be then again sealed off reactor be placed in 60 DEG C of baking oven keep the temperature it is spare；
Natural flake graphite is dried 12h in 50 DEG C of vacuum ovens by step 3, box in 800 DEG C with high temperature puffing method
It is heated in resistance furnace and expanded graphite is made, it is spare；
Expanded graphite obtained in step 3 is put into reactor by step 4, be put into reactor porous magnesia and
Porous polyester fiber, is then uniformly mixed, then 60 DEG C of water-bath heat preservations, spare；
Step 5, under vacuum conditions is instilled binary eutectic fatty acid mixed solution and carboxymethyl cellulose with dropper
In the reactor of step 4, until being added dropwise；
After the completion of step 6, step 5, reactor continues 60 DEG C of water-baths, with blender to being sufficiently stirred in reactor,
Until be uniformly mixed, then the material in reactor pours into the mold pre-processed to (in the present embodiment, mold is glass
Cotton structure layer), then mold is placed in freeze-day with constant temperature 20-30h in 70 DEG C of baking oven, finally take out and demould to obtain the final product.
To sum up, thermal insulation, sun-shade pad preparation method the following steps are included:
Step 1, braiding high-strength yarn, by 42-58 root aramid fiber and 21-29 root polyester fiber according to mass percent
Merge twisting into high-strength yarn for 2:1, high-strength yarn is then woven into tear resistant layer；
Obtained tear resistant layer is immersed in silica solution by step 2, is then allowed to stand carry out gel, is taken out after 10h and be put into 60
It is dried in DEG C thermostatic drying chamber, tear resistant layer after obtaining Gel Treatment (so that gel is full of the hole in tear resistant layer,
Intercept heat is propagated to vehicle body, greatly improves the heat-proof quality of tear resistant layer), it is spare；
Then step 3, the face jet-plating metallization reflectance coating in tear resistant layer spray fluorine carbon on the metallic reflective coating of formation
Varnish, it is spare after dry；
Mineral wool is pressed into mineral wool structure sheaf of the one side with cone substrate by step 4, manufacture mineral wool molding die,
It is spare；
Step 5, the face spray containment glue that cone substrate is had in mineral wool structure sheaf, and on the face of mineral wool structure sheaf
One layer of sealant is formed, it is spare after dry；
Step 6, manufacture solid-liquid phase change material, become liquid phase for solid-liquid phase change material heating and are placed on mineral wool structure sheaf
Cone substrate in, wherein bore intrabasement liquid phase phase-change material depth be no more than cone substrate height, then by glass cotton knot
Structure is placed on that vacuum tank is hollow to be cooled to room temperature；
Step 7 manufactures flexible heat-conductive coating, organosilicon modified crylic acid resin and dispersing agent is added in reactor, so
Mixed component is stirred up to being uniformly dispersed with the revolving speed of 800r/min with blender afterwards, base-material is obtained, then to base-material
In sequentially add carbon fiber wire, expanded graphite, mica powder, fumed silica, compound transition metal oxide powder, then plus
Enter butyl acetate and diacetone alcohol, mixture is sufficiently stirred with blender, mixing speed 1000r/min, until point
It dissipates uniformly, obtains initial point；
Metal fiber wire and levelling agent are added in the initial point of step 7 step 8, after being uniformly dispersed with dispersion machine
To uncured coating, uncured coating is pumped into the storage tank of air gun, is then sprayed on step 6 with air gun
Obtained mineral wool structure sheaf with cone substrate one side, coating thickness be 1-5mm(be preferably 2mm, also may be selected 1mm or
It 5mm) stands to coating levelling, is put into high temperature oven vacuum bakeout film-forming at 140 DEG C, then keeps the temperature 10min again, with
Furnace is cooled to room temperature, and obtains initial thermal insulation, sun-shade pad；
Step 9, tear resistant layer that step 3 obtains is obtained with step 7 without the one side of metallic reflective coating it is initial heat-insulated
Sun-shade cushion be adhesively fixed without the one side of flexible heat-conductive coating with binder after to get to thermal insulation, sun-shade pad.
As depicted in figs. 1 and 2, metallic reflective coating 2 reflects most sunlights, plays shaded effects well, remains
Remaining part divides sunlight and heat to be isolated by tear resistant layer 3, and heat and sunlight can not infiltrate into the rebasing portion of thermal insulation, sun-shade, in turn
Play heat insulation；When flexible heat-conducting layer 6 is contacted with vehicle body, it is a large amount of that the biggish temperature difference promotes flexible heat-conducting layer to absorb vehicle body
Heat, and then make the reduction of vehicle body constant temperature, until vehicle body and flexible heat-conducting layer 6 reach hot dynamic balancing, if heat dynamic is flat at this time
The temperature that weighs is higher, then phase-change material 5 largely absorbs the heat of flexible heat-conducting layer, promotes flexible 6 temperature of heat-conducting layer to reduce, and then make
Hot dynamic equilibrium temperature reduces, and on the whole, so that the temperature of vehicle body is in lower state, avoids the risk of scald.Meanwhile vehicle
The reduction of body temperature, it also occur that chain effect, further decreases interior temperature, it is 30 in temperature by on-the-spot test
DEG C open parking ground in, the thermal insulation, sun-shade pad of the present embodiment is covered after 1h on automobile, is measured with thermometer, interior temperature
Degree is differed with outside air temperature within 6 DEG C, and best only 2-3 DEG C of difference, the temperature of vehicle body is differed with outside air temperature within 9 DEG C,
Best only 4-5 DEG C of difference, hence it is evident that better than the existing thermal insulation, sun-shade pad used.
Embodiment two
Embodiment two is the same as example 1, the difference is that, solid-liquid phase change material is by mass percentage by following
Composition: expanded graphite 9%, binary eutectic fatty acid 82%, porous magnesia 1%, porous polyester fiber 5%, carboxymethyl cellulose
3%, wherein binary eutectic fatty acid is blended by lauric acid and myristic acid.
Embodiment three
Embodiment three is identical as embodiment one and embodiment two, the difference is that, solid-liquid phase change material presses quality hundred
Ratio is divided to be made up of: expanded graphite 7%, binary eutectic fatty acid 83%, porous magnesia 5%, porous polyester fiber 3%, carboxylic
Methylcellulose 2%, wherein binary eutectic fatty acid is blended by lauric acid and myristic acid.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (3)
1. a kind of preparation method of automobile thermal insulation, sun-shade pad, which comprises the following steps:
Aramid fiber is merged twisting into height for 2:1 according to mass percent with polyester fiber by step 1, braiding high-strength yarn
Then high-strength yarn is woven into tear resistant layer by strength yarns；
Obtained tear resistant layer is immersed in silica solution by step 2, is then allowed to stand carry out gel, is taken out after 10h and be put into 60 DEG C of perseverances
It is dried in warm drying box, the tear resistant layer after obtaining Gel Treatment is spare；
Then it is clear to spray fluorine carbon on the metallic reflective coating of formation for step 3, the face jet-plating metallization reflectance coating in tear resistant layer
Paint, it is spare after dry；
Mineral wool is pressed into mineral wool structure sheaf of the one side with cone substrate by step 4, manufacture mineral wool molding die, spare；
Step 5 has a face spray containment glue of cone substrate in mineral wool structure sheaf, and is formed on the face of mineral wool structure sheaf
One layer of sealant, it is spare after dry；
Solid-liquid phase change material heating is become the cone that liquid phase is placed on mineral wool structure sheaf by step 6, manufacture solid-liquid phase change material
In substrate, wherein the depth for boring intrabasement liquid phase phase-change material is no more than the height of cone substrate, then by mineral wool structure sheaf
It is placed in that vacuum tank is hollow to be cooled to room temperature；
Step 7 manufactures flexible heat-conductive coating, and organosilicon modified crylic acid resin and dispersing agent are added in reactor, then used
Blender is stirred until be uniformly dispersed mixed component with the revolving speed of 800r/min, obtains base-material, then into base-material according to
Secondary addition carbon fiber wire, expanded graphite, mica powder, fumed silica, compound transition metal oxide powder, are then added vinegar
Acid butyl ester and diacetone alcohol are sufficiently stirred mixture with blender, mixing speed 1000r/min, until dispersion is equal
It is even, obtain initial point；
Metal fiber wire and levelling agent are added in the initial point of step 7 step 8, obtain not after being uniformly dispersed with dispersion machine
Uncured coating is pumped into the storage tank of air gun by cured coating, is then sprayed on step 6 with air gun and is obtained
One side of the mineral wool structure sheaf with cone substrate, stand to after coating levelling, be put into high temperature oven vacuum bakeout at 140 DEG C
Then film-forming keeps the temperature 10min again, cool to room temperature with the furnace, obtains initial thermal insulation, sun-shade pad；
Step 9, the initial thermal insulation, sun-shade for obtaining the tear resistant layer that step 3 obtains with step 7 without the one side of metallic reflective coating
It pads after the one side without flexible heat-conductive coating is adhesively fixed with binder to get to thermal insulation, sun-shade pad.
2. the preparation method of automobile thermal insulation, sun-shade pad as described in claim 1, which is characterized in that in step 1, aramid fiber is fine
It is 42-58 root that radical is measured by Wesy, and polyester fiber dosage radical is 21-29 root.
3. the preparation method of automobile thermal insulation, sun-shade pad as described in claim 1, which is characterized in that in step 6, solid-liquid
The phase transition temperature of phase-change material is 31-36 DEG C.
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| CN201711301148.9A CN107972331B (en) | 2016-09-09 | 2016-09-09 | A kind of preparation method of automobile thermal insulation, sun-shade pad |
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| CN201711301148.9A CN107972331B (en) | 2016-09-09 | 2016-09-09 | A kind of preparation method of automobile thermal insulation, sun-shade pad |
| CN201610814021.6A CN106240026B (en) | 2016-09-09 | 2016-09-09 | Automobile using thermal insulation, sun-shade pad |
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| CN201610814021.6A Expired - Fee Related CN106240026B (en) | 2016-09-09 | 2016-09-09 | Automobile using thermal insulation, sun-shade pad |
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| CN110499649A (en) * | 2018-05-18 | 2019-11-26 | 澳洋集团有限公司 | A kind of preparation method of heat-resistant fabric |
| CN109177419A (en) * | 2018-10-11 | 2019-01-11 | 泉州市联控自动化科技有限公司 | A kind of sun-proof Sunshade film of phase transformation |
| CN113500833B (en) * | 2021-05-19 | 2023-06-09 | 深圳市华科创智技术有限公司 | Flexible phase-change automatic temperature control device for intelligent wearing and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203888586U (en) * | 2014-06-26 | 2014-10-22 | 张天华 | Inflatable sunshade pad in automobile |
| CN104943511A (en) * | 2015-07-10 | 2015-09-30 | 江苏领腾汽车部件有限公司 | Durable heat-insulating and sun-shading automotive pad |
| CN204820516U (en) * | 2015-07-10 | 2015-12-02 | 江苏领腾汽车部件有限公司 | Car sunshade pad that insulates against heat |
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| DE10033322B4 (en) * | 2000-07-03 | 2005-08-04 | HP-chemie Pelzer Ltd. Industrial Estate | Method for producing composite elements and composite element |
| KR100830060B1 (en) * | 2006-12-15 | 2008-05-19 | 한국과학기술연구원 | Phase-change ram and fabrication method thereof |
| CN202200918U (en) * | 2011-06-22 | 2012-04-25 | 中国科学院深圳先进技术研究院 | Automobile |
| CN203088633U (en) * | 2012-11-20 | 2013-07-31 | 浙江三赢医疗器械有限公司 | Gel cushion containing phase-change material |
| CN206217262U (en) * | 2016-09-09 | 2017-06-06 | 泰安天元棉麻有限公司 | Automobile thermal insulation, sun-shade pad |
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2016
- 2016-09-09 CN CN201711301148.9A patent/CN107972331B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203888586U (en) * | 2014-06-26 | 2014-10-22 | 张天华 | Inflatable sunshade pad in automobile |
| CN104943511A (en) * | 2015-07-10 | 2015-09-30 | 江苏领腾汽车部件有限公司 | Durable heat-insulating and sun-shading automotive pad |
| CN204820516U (en) * | 2015-07-10 | 2015-12-02 | 江苏领腾汽车部件有限公司 | Car sunshade pad that insulates against heat |
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| CN107972331A (en) | 2018-05-01 |
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