TWI411531B - Structures of heat-insulating films and the process of producing the same - Google Patents

Abstract

The present invention relates to heat-insulating films, comprising: (a) a substrate; and (b) a surface coating layer containing (b-1) a heat-insulating layer positioned onto the substrate, wherein the heat-insulating layer contains aerogels, (b-2) a refracting layer positioned onto the heat-insulating layer, wherein the refracting layer contains metal oxides and hollow glass balls. The present invention further relates to a process for the preparation of heat-insulating films.

Description

Insulation cloth film structure and manufacturing method thereof

The invention discloses a heat insulating cloth film characterized by comprising a heat insulating resin layer composed of a polymer resin containing an aerogel material and a reflection composed of a polymer resin containing a metal oxide and a hollow glass ball. a resin layer; and a method of manufacturing the above-mentioned heat insulating cloth film.

Generally, the way to block the heat source is the shielding method and the reflection method. The shielding causes the heat to remain on the surface to increase the temperature of the surface of the material. The solution is to reflect the heat back to the atmosphere to achieve the effect of blocking the heat source.

When sunlight hits the surface of the substrate, most of the light is reflected to the atmosphere, while the unreflected light penetrates the surface of the substrate (the first layer) and enters the insulating resin layer (the second layer). It is known that if the heat transfer coefficient of the heat insulating resin layer is too low, the heat energy entering the heat insulating resin layer cannot be completely transferred to the next layer (third layer), so that heat energy cannot be transferred to the third layer and accumulation occurs in the first layer. Therefore, when the temperature of the first layer is greater than the temperature of the external environment, the heat energy starts to be transmitted to the outside, and thus radiation occurs.

In the prior art, U.S. Patent No. 4,770,927 discloses a Reinforced fluoropolymer composite having a low modulus and chemical resistance, comprising a coated parent material (matrix). The substrate comprises: (a) an initial layer of a fluoropolymer, and (b) an overcoat layer of a fluoroelastomer.

U.S. Patent No. 5,230,937 discloses a flexible, corrosion-resistant fabric composite comprising: first and second flexible fabric substrates, and a layer of melt processability between the first and second substrates Fluoroplastic film. U.S. Patent No. 5,421,450 discloses a heat-resistant laminated conveyor belt comprising a reinforcing layer and a wear-resistant layer, wherein each layer of the base fabric is formed by impregnating a fluoroplastic with a heat-resistant fiber cloth.

In the above patents, the heat-insulating fabric is processed and compounded by resin impregnation, and the design of the heat-insulating coating structure is not disclosed.

The Republic of China Published Patent Application No. 200827420 discloses a double-layer heat insulating coating structure comprising a porous insulating layer and a reflective insulating resin layer formed on a substrate, wherein the porous insulating layer contains a gas condensing a rubber powder, a dispersion, a binder, and a resin, the reflective heat insulating resin layer containing a hollow filler, a powder filler, a dispersion, and a resin, and the reflective heat insulating resin layer is sprayed on the porous heat insulating layer by high pressure. . In the prior case, a metal substrate was used and a reflective heat insulating resin layer was formed on the porous heat insulating layer by high pressure spraying. It was not disclosed that the fabric substrate was used and the layers were formed by direct coating.

The Republic of China Published Patent Application No. 201018715 discloses an insulating coating which adds hollow microspheres and ruthenium gel to a material having a light reflecting function to improve the heat insulating effect. In the previous case, fluorocarbon resin was not used, and there was no design of the overall layer structure. Further, the pore-enlarging agent was added to the material of the prior case, and the mechanical strength of the material was often broken due to excessive pores.

The Republic of China Patent No. I265186 discloses a high temperature heat insulating coating which is coated on a substrate to form a high temperature heat insulating resin layer comprising a polymer base layer, an alumina aerogel and hollow microspheres. The previous case mainly consists of high temperature flame resistance and thermal dimensional stability.

The Republic of China Patent No. I318999 discloses an insulating coating which is applied to a substrate to form a heat insulating resin layer comprising a polymer base layer, an organic/inorganic hybrid gel, and an aerogel. The former case uses a carbon dioxide supercritical drying method to form a dry organic/inorganic hybrid filler.

The Republic of China Published Patent Application No. 200948617 discloses a transparent heat-insulating multilayer structure comprising a transparent substrate, a first transparent heat-resistant layer, and a second transparent heat-resistant layer. In the previous case, the use of antimony tin oxide (ATO) or the like as a transparent heat-resistant layer causes environmental pollution problems, and the former case does not have a fluorocarbon resin.

The above prior art does not disclose the use of a multilayer structure film design comprising a reflective resin layer, a heat insulating resin layer and a fluorocarbon resin layer to solve the problem of heat insulation in which the material is often exposed to sunlight.

Therefore, the present invention proposes a multi-layer structure of the heat-insulating cloth film, which can have both excellent composite strength and heat insulation effect, and can avoid the problem of material damage caused by long-term exposure.

One object of the present invention is to provide a heat insulating cloth film comprising: (a) a base layer composed of a fluorocarbon resin; and (b) a surface coating layer comprising: (b-1) a heat insulating resin layer as a first surface coating layer on the base layer, wherein the heat insulating resin layer is composed of a polymer resin, and the resin comprises an aerogel material; and (b-2) a reflective resin layer is coated as the second surface And a layer on the heat insulating resin layer, wherein the reflective resin layer is composed of a polymer resin, and the resin comprises a metal oxide and a hollow glass ball.

Another object of the present invention is to provide a method for manufacturing a heat insulating cloth film, the steps comprising: i) providing a fluorocarbon resin impregnation liquid; ii) immersing a glass fiber cloth in the fluorocarbon resin immersion liquid, a surface of the glass fiber cloth forms a fluorocarbon resin base layer; iii) providing a heat insulating resin coating solution, the solution comprising an aerogel, and coating the heat insulating resin coating solution on the fluorocarbon resin base layer to form a heat insulating resin layer; iv) providing a reflective resin coating solution comprising a metal oxide and a hollow glass sphere, and applying the reflective resin coating solution to the heat insulating resin layer to form a reflection Resin layer.

The heat insulating cloth film of the present invention comprises (a) a base layer composed of a fluorocarbon resin, the base layer comprising an intermediate layer composed of a glass fiber cloth, wherein the glass fiber cloth is a glass fiber cloth woven after twisting The size of the yarn diameter is less than or equal to 6 μm, and the thickness of the glass cloth is 0.1 to 0.4 mm, preferably 0.3 mm.

According to a specific example of the present invention, the glass fiber cloth is used as an intermediate layer, and a fluorocarbon resin solution is immersed on the surface thereof to form a fluorocarbon resin base layer. The impregnation solution preferably has a solid content of more than 50% of fluorine. The carbon resin solution is more preferably an aqueous solution of a fluorocarbon resin having a solid content of more than 60%.

In the present invention, the fluorocarbon resin layer has a thickness of 0.05 to 0.3 mm, preferably 0.05 mm.

The fluorocarbon resin may be selected from the group consisting of polytetrafluoroethylene resin (PTFE), a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether (PFA), a copolymer of tetrafluoroethylene and hexafluoropropylene (FEP), and tetrafluoroethylene. A group of ethylene and ethylene copolymers (ETFE), polyvinylidene fluoride (PVDF), and polychlorotrifluoroethylene (PCTFE).

According to the present invention, (b) a surface coating layer is coated on the (a) base layer, wherein the surface coating layer comprises (b-1) a heat insulating resin layer and (b-2) a reflective resin layer. According to an embodiment of the present invention, (b-1) the heat insulating resin layer is on the (a) base layer, and (b-2) the reflective resin layer is on the (b-1) heat insulating resin layer.

(b-1) The heat insulating resin layer is composed of a polymer resin, and the resin contains an aerogel material. The aforementioned heat insulating resin layer has a thickness of 0.1 to 0.5 mm, preferably 0.15 mm.

In the present invention, the polymer resin is selected from the group consisting of a fluorocarbon resin, an acrylic resin, and a polyvinyl chloride resin, preferably a fluorocarbon resin selected from the group consisting of polytetrafluoroethylene resin (PTFE), tetrafluoroethylene, and Copolymer of fluoroalkyl vinyl ether (PFA), copolymer of tetrafluoroethylene and hexafluoropropylene (FEP), copolymer of tetrafluoroethylene and ethylene (ETFE), polyvinylidene fluoride (PVDF) and polychlorotrifluorochloride Group of ethylene (PCTFE).

According to one embodiment of the present invention, the polymer resin is preferably a fluorocarbon resin solution having a solid content of more than 50%, more preferably an acetoxy solution of a fluorocarbon resin having a solid content of more than 60%.

The aerogel system may be selected from aerogels synthesized at normal temperature and pressure. The aerogel is preferably a helium gel.

The aerogel ratio is from 8 to 50 parts by weight, preferably from 10 to 30 parts by weight, based on 100 parts by weight of the fluorocarbon resin.

Preferably, the polymer resin of the (b-1) heat insulating resin layer is additionally provided with a hollow glass sphere having a spherical diameter ranging from 120 nm to 550 nm, preferably about 350 nm, and The hollow glass spheres have a pore size ranging from 40 nm to 350 nm, preferably about 320 nm.

The ratio of the hollow glass spheres is from 8 to 25 parts by weight, preferably from 10 to 20 parts by weight, based on 100 parts by weight of the fluorocarbon resin.

(b-2) The reflective resin layer is another heat insulating layer composed of a polymer resin, and the resin contains a metal oxide and a hollow glass ball. The thickness of the reflective resin layer is 0.05 to 0.4 mm, preferably 0.05 mm.

In the present invention, the polymer resin is selected from the group consisting of a fluorocarbon resin, an acrylic resin, and a polyvinyl chloride resin, and preferably the fluorocarbon resin is selected from the group consisting of polytetrafluoroethylene resin (PTFE), tetrafluoroethylene, and perfluorocarbon. Copolymer of alkyl vinyl ether (PFA), copolymer of tetrafluoroethylene and hexafluoropropylene (FEP), copolymer of tetrafluoroethylene and ethylene (ETFE), polyvinylidene fluoride (PVDF) and polychlorotrifluoroethylene Group of (PCTFE).

According to one embodiment of the present invention, the polymer resin is preferably a fluorocarbon resin solution having a solid content of more than 50%, more preferably an ethyl acetate solution or an aqueous solution of a fluorocarbon resin having a solid content of more than 60%.

The metal oxide is selected from the group consisting of titanium oxide, zirconium oxide, tin oxide, zinc oxide, and manganese oxide. The metal oxide has a particle size of less than 100 nm, preferably less than 40 nm.

The proportion of the metal oxide is from 8 to 50 parts by weight, preferably from 15 to 25 parts by weight, based on 100 parts by weight of the fluorocarbon resin.

The diameter of the hollow glass sphere ranges from 120 nm to 550 nm, preferably about 350 nm, and the hollow glass sphere has a pore size ranging from 40 nm to 350 nm, preferably about 320 nm.

The ratio of the hollow glass spheres is from 5 to 35 parts by weight, preferably from 8 to 25 parts by weight, based on 100 parts by weight of the fluorocarbon resin.

Optionally, an additive such as a stabilizer and/or an anti-UV agent may be additionally added to the reflective resin layer of the present invention, and the ratio of the additive is 1 to 25 parts by weight, preferably 5 to 25 parts by weight, and 100 parts by weight of the polymer. As the benchmark.

The anti-UV agent is selected from a Benzotriazole type or a Benzophnon Type.

In the present invention, referring to Fig. 1, the heat insulating cloth film (1) comprises a fluorocarbon resin base layer (21), a heat insulating resin layer (31), and a reflective resin layer (41). According to a specific example of the present invention, the heat insulating resin layer and the reflective resin layer are composed of a fluorocarbon resin, more preferably a polytetrafluoroethylene resin, wherein the heat insulating resin layer (31) comprises a helium gel (31a). And the hollow glass ball (31b), the reflective resin layer (41) contains a metal oxide (41a) and a hollow glass ball (41b).

According to a preferred embodiment of the present invention, referring to Fig. 2, the fluorocarbon resin base layer (21) comprises an intermediate layer (51), wherein a fluorocarbon resin is impregnated on the surface of the intermediate layer (51), the intermediate layer As a glass fiber cloth, the surface of the glass fiber cloth is impregnated to form a top surface fluorocarbon resin base layer (211) and a bottom fluorocarbon resin base layer (212). A heat insulating resin layer (31) is formed on the fluorocarbon resin (211) on the top surface, and a reflective resin layer (41) is formed on the surface of the heat insulating resin layer (31).

The insulating film of the present invention has a total thickness in the range of at least 0.35 mm, preferably in the range of 0.35 to 2.0 mm, more preferably 0.6 to 1.9 mm.

In the present invention, a multilayer structure heat insulating cloth film can be obtained by a dipping and coating method.

The method for manufacturing a heat insulating cloth film according to the present invention, the steps comprising:

i) providing a fluorocarbon resin impregnating solution;

Ii) immersing a glass fiber cloth in the fluorocarbon resin impregnation liquid, uniformly impregnating the surface of the glass fiber film with a fluorocarbon resin impregnation liquid to form a fluorocarbon resin base layer on the surface of the glass fiber cloth. It comprises a fluorocarbon resin base layer on the top surface and a fluorocarbon resin base layer on the bottom surface. Wherein, the glass fiber cloth is used as an intermediate layer, and the fluorocarbon resin base layer is used as a protective layer;

Iii) providing a heat-insulating resin coating solution, the solution comprising an aerogel, optionally additionally adding a hollow glass ball, coating the heat insulating resin coating solution on the fluorocarbon resin base layer to be on the top surface Forming a heat insulating resin layer on the surface of the fluorocarbon resin base layer;

Iv) providing a reflective resin coating solution comprising a metal oxide and a hollow glass sphere, the reflective resin coating solution being coated on the heat insulating resin layer to form on the surface of the heat insulating resin layer A reflective resin layer. Accordingly, a multilayered fabric film having a heat insulating effect is finally obtained.

According to a specific example of the present invention, a method for manufacturing a heat insulating cloth film as shown in FIG. 3 includes: step S1: providing a glass fiber cloth; and step S2: pretreating the glass fiber cloth to be cleaned with hot water; S3: immersing the pretreated glass fiber cloth in a fluorocarbon resin impregnation liquid to uniformly coat the surface of the glass fiber cloth to form a fluorocarbon resin base layer. Preferably, the fluorocarbon resin base layer comprises a fluorocarbon resin base layer on the top surface of the glass fiber cloth and a fluorocarbon resin base layer formed on the bottom surface; Step Sa: providing a heat insulating resin solution containing an aerogel hollow glass ball; Step S4: the heat insulating resin solution Coating on the surface of the fluorocarbon resin base layer formed in the above step S3 to form a heat insulating resin layer on the fluorocarbon resin base layer, preferably on the surface of the fluorocarbon resin base layer on the top surface of the glass fiber cloth Coating to form a heat insulating resin layer; Step Sb: providing a reflective resin solution containing a metal oxide and a hollow glass ball; and Step S5: applying the reflective resin solution on the surface of the heat insulating resin layer To form a top reflective resin layer.

According to the above steps, a cloth film having a multi-layer functional structure can be obtained. The cloth film has the advantages of excellent composite strength and weather resistance, and can have the effects of reflection or radiant heat and heat insulation at the same time, through sunlight or ultraviolet light. After the light is irradiated, the heat source is reflected back to the atmosphere in the reflective resin layer, and the unreflected heat source enters the heat insulating resin layer to be blocked and radiated back to the atmosphere, thereby reducing the heat transfer coefficient and the heat insulating effect. Thereby, the material can be protected and the surface temperature can be lowered.

According to the present invention, by means of a glass fiber layer, a fluorocarbon resin layer and a multi-layer structure design of a high-reflection and high-emissivity layer with a fluorocarbon polymer, combined with a processing method of dipping, coating or laminating, through reflection, scattering, and high Radiation and resistance heat transfer can make the multilayer structure film exhibit excellent composite strength, weather resistance and heat insulation properties.

The heat insulating cloth film of the present invention can be applied to various uses, including: a structural cloth film, a weather resistant cloth film, a functional cloth film, a coated bonding fabric, and the like.

The invention is illustrated by the following examples without restricting the invention. In the examples, the respective composition ratios are by weight unless otherwise specified.

[Examples] I) Test equipment and evaluation methods 1) Weather resistance test

According to the ISO 4892-2 method, the samples were evaluated for weather resistance by the warp strength and the weft strength of the tensile strength measured at 0 hours, 500 hours, and 1000 hours, respectively.

2) Near-infrared light/UV-Vis spectral analysis

Instrument: Original HITACHI, model: U-4100 Solid sample measurement system.

Analytical method: The masking rate, absorptivity and reflectivity of the material are measured in different wavelengths of the light source.

(2-1) Using UV detection

The wavelength range is 280 to 400 nm and the film is measured for transmittance/absorption.

(2-2) NIR detection

The wavelength range is 724 to 2500 nm, and the transmittance/absorption rate of the film is measured.

3) Insulation test (3-1) Open system test

Place a simulated closed box on the experimental table (the size of the closed box is 30 cm x 22 cm x 62 cm). A film sample (length to width of 350 mm x 250 mm x 0.6 mm) was placed on a simulated closed box, and a halogen lamp (500 W) was placed at a fixed position above the sample as a stable heat source.

A temperature detecting device is placed on the surface of the sample and at a fixed position of about 10 cm from the top of the closed box.

The halogen lamp is turned on to illuminate the surface of the sample, and the temperature on both sides of the sample is measured. The temperature on the outer surface side of the sample is expressed as T1 _(O) , and the temperature on the inner side of the simulated sealed case is T2 _(O) until stable, and the temperature difference between the two sides is calculated. .

(3-2) Closed system test

Place two simulated closed boxes stacked on top of each other on the heating panel (the size of the closed box is 30 cm x 22 cm x 62 cm). A film sample (length and width of 350 mm x 250 mm x 6 mm) is placed in the center of the bottom of the upper closed box, that is, close to the middle position of the two simulated closed boxes, respectively, in the two simulated sealed boxes Place the temperature detection device.

The temperature of the heating panel was set to 180 ° C, and the temperature on both sides of the sample was measured. The temperature of the sample on the upper surface of the upper simulated enclosure was expressed as T1 _(C) , and the temperature inside the simulated enclosure was T2 _(C) until stable. And calculate the temperature difference between the two sides.

II) Preparation of composition formula of each film layer 1) Dip coating formulation of fluorocarbon resin base layer

An aqueous dispersion of a polytetrafluoroethylene (PTFE) resin having 60% solid content was prepared as the immersion liquid A.

2) Coating formula of insulating resin layer

15 parts by weight of a helium aerogel and 10 parts by weight of hollow glass spheres (having a spherical diameter of about 350 nm and a pore diameter of about 320) were added to 100 parts by weight of the polytetrafluoroethylene resin dispersion (solid content 60%, ethyl acetate solution). Nano) to obtain a thermal barrier coating solution B.

3) High reflection / high radiation coating formula

The high-reflection/high-radiation coating solution N was prepared according to the composition ratio shown in Table 1. The composition ratio in the table was 100 parts by weight (phr) of polytetrafluoroethylene resin dispersion (solid content 60%, ethyl acetate solution). For the benchmark, the anti-UV agent is benzotriazole, ), the diameter of the hollow glass ball is 350 nm.

Example 1

A multilayer structure of the heat insulating cloth film was prepared according to the following procedure.

Referring to Fig. 2, a glass fiber cloth (51) having a thickness of 0.3 mm was taken and pretreated by hot water washing.

The pretreated glass fiber cloth (51) is immersed in the fluorocarbon resin impregnation liquid A, and the immersion liquid A is uniformly coated on the surface of the glass fiber cloth, and after drying, on the top surface of the glass fiber cloth. Forming a top surface of the polytetrafluoroethylene resin coating (211) and a bottom surface of the polytetrafluoroethylene resin coating (212) as a protective layer, wherein the polytetrafluoroethylene resin coating is respectively formed on the bottom surface. The thickness is 0.05 mm.

Next, a heat insulating coating solution B is applied on the surface of the top surface of the polytetrafluoroethylene resin coating (211), and after drying, a heat insulating resin layer is formed on the surface of the coating layer (211). ), its thickness is 0.15 mm.

Thereafter, a reflective resin coating solution N-1 is coated on the surface of the heat insulating resin layer (31), and after drying, a reflective resin coating layer is formed on the surface of the heat insulating resin coating layer (31) ( 41), the thickness of which is 0.05 mm. Accordingly, a heat insulating cloth film can be obtained.

Examples 2 to 9

A heat insulating film was prepared as in the procedure of Example 1, except that the reflective resin coating solution was coated with the reflective resin coating solutions N-2 to N-9, respectively.

Comparative example 1

A reflective resin coating solution N-0 was added without adding any additives, and a heat insulating cloth film was prepared as in the procedure described in Example 1.

[Property testing and analysis]

According to the above test and evaluation methods, the film samples prepared in the examples and the comparative examples were subjected to characteristic test and analysis.

1) Weather resistance

The film sample of Example N-6 (thickness 0.6 mm) was tested for weather resistance according to the ISO 4892-2 method. The tensile time of the sample was 0 hours, 500 hours and 1000 hours, respectively. The strength and latitudinal strength are shown in Table 2.

2) Insulation

Samples 1 to 9 and Comparative Example 1 insulating cloth films were taken to prepare samples, and tested according to the above-mentioned heat insulation test method, and the heat insulation effect was evaluated by the temperature difference value.

As shown in Table 3, in an open system, the temperature difference (℃) to _{T1 (O) -T2 (O)} , the results demonstrate, comprising a reflective layer and a resin insulating layer fabric film multilayer structure according to the present invention obtained in which the reflection The resin layer is added with a metal oxide (for example, titanium oxide, zinc oxide and manganese oxide), a helium gel and a hollow glass sphere. As in Examples 1 to 9, the surface temperature of the substrate on the film layer is lower than the temperature of the outer surface of the film. In addition, compared with the commercially available FTG-600 film, it is shown that coating a reflective resin layer having a reflective function on the heat insulating layer of the film produces a better cooling effect.

In addition, in a closed system, the temperature difference (°C) is T1 _{(C) -} T2 _(C) . The multilayer structure film obtained according to the present invention comprises a reflective resin layer and a heat insulating layer, wherein the reflective resin layer is added with a metal oxide (for example, titanium oxide, zinc oxide and manganese oxide), a helium gel and a hollow glass ball, as in the embodiment. From 1 to 9, the surface temperature of the base layer of the film is lower than the temperature of the outer surface of the film. Further, a resin layer not containing a metal oxide (for example, titanium oxide, zinc oxide, and manganese oxide), a helium gel, and a hollow glass ball is coated on the heat insulating layer of the film, as in Comparative Example 1, the temperature difference is generated. The value is much lower than the heat insulating cloth film having the reflective resin layer (as in Examples 1 to 9). This also proves that the multilayer structure heat insulating film obtained according to the present invention has a cooling effect.

Note [1]: FTG-600 film is a commercial product, thickness 0.6 mm, purchased from Zhongxing Huacheng

3) Covering

The insulation film samples of Examples 2, 3 and 6 were taken, and the near-infrared light shielding (%) and ultraviolet light shielding (%) tests were carried out in accordance with the aforementioned test methods to evaluate the heat insulation effect.

As shown in Table 4, the test results prove that the multilayer structure film comprising the reflective resin layer and the heat insulating layer according to the present invention can completely shield the near-infrared light and the ultraviolet light to achieve the effect of blocking the heat source.

Comparing the insulation film samples of Examples 2, 3 and 6 with the commercially available FSK film, as shown in Table 5, the film samples obtained according to the present invention have better reflection effects in the visible and near-infrared regions. .

Note [2]: Absorption rate (%) measurement value, instrument model: HITACHI, U-4100 Solid sample measurement system

[3]: Penetration rate (%) measurement value, instrument model: HITACHI, U-4100 Solid sample measurement system

[4]: reflectance = 1 - (absorption rate + penetration rate)

[5]: FSK film is a commercial product, thickness 0.6 mm, purchased from LINTEC

As described above, the heat insulating film structure of the present invention is composed of a composition having a low heat transfer coefficient in the heat insulating resin layer and a metal oxide containing high reflectivity or high radiation in the reflective resin layer, and has weather resistance, The properties of heat insulation and radiant heat are suitable for materials used as commercial fabric film related products.

The above-described embodiments of the present invention are not intended to be limited thereto, and various modifications and improvements may be made without departing from the spirit and scope of the invention. Equivalent changes or modifications of the meaning and range of the substance are intended to be included in the scope of the invention.

1. . . Insulation cloth

twenty one. . . Fluorocarbon resin base layer

211. . . Top fluorocarbon resin base

212. . . Bottom fluorocarbon resin base

31. . . Insulating resin layer

31a. . . Aerogel

31b. . . Hollow glass ball

41. . . Reflective resin layer

41a. . . Metal oxide

41b. . . Hollow glass ball

51. . . Glass fiber cloth

Fig. 1 is a schematic view showing the structure of the heat insulating cloth film of the present invention.

Fig. 2 is a schematic view showing the structure of a heat insulating cloth film according to a specific embodiment of the present invention.

Fig. 3 is a flow chart showing the manufacturing method of the heat insulating film of the present invention.

1. . . Insulation cloth

twenty one. . . Fluorocarbon resin base layer

31. . . Insulating resin layer

31a. . . Aerogel

31b. . . Hollow glass ball

41. . . Reflective resin layer

41a. . . Metal oxide

41b. . . Hollow glass ball

Claims (11)

A heat insulating cloth film comprising: (a) a base layer composed of a fluorocarbon resin; and (b) a surface coating layer comprising: (b-1) a heat insulating resin layer as a first surface coating layer, Located on the base layer, wherein the heat insulating resin layer is composed of a polymer resin, and the resin comprises an aerogel material; and (b-2) a reflective resin layer is provided as the second surface coating layer. On the resin layer, wherein the reflective resin layer is composed of a polymer resin, and the resin comprises a metal oxide and a hollow glass sphere. The heat insulating cloth film of claim 1, wherein the base layer comprises an intermediate layer composed of a glass fiber cloth, and the fluorocarbon resin is impregnated on the surface of the intermediate layer. The heat insulating cloth film of claim 2, wherein the glass fiber cloth has a yarn diameter of 6 μm or less. The heat insulating film of the first aspect of the invention, wherein the heat insulating resin layer and the resin of the reflective resin layer are independently selected from the group consisting of a fluorocarbon resin, an acrylic resin, and a polyvinyl chloride resin. The heat insulating film of claim 1, wherein the aerogel is a helium gel. The heat insulating film of claim 1, wherein the metal oxide is selected from the group consisting of titanium oxide, zinc oxide, and manganese oxide. The heat insulating film of any one of claims 1 to 6, wherein the reflective resin layer further comprises an anti-UV agent and/or a stabilizer. A method for manufacturing a heat insulating cloth film, comprising the steps of: i) providing a fluorocarbon resin impregnating solution; ii) immersing a glass fiber cloth in the fluorocarbon resin impregnating liquid to form a fluorine on the surface of the glass fiber cloth. a carbon resin base layer; iii) providing a heat insulating resin coating solution, the solution comprising an aerogel, coating the heat insulating resin coating solution on the fluorocarbon resin base layer to form a heat insulating resin layer; Providing a reflective resin coating solution comprising a metal oxide and a hollow glass sphere, and applying the reflective resin coating solution to the heat insulating resin layer to form a reflective resin layer. The method for producing a heat insulating cloth film according to claim 8, wherein the fluorocarbon resin impregnating liquid has a solid content of more than 50%. The method for producing a heat-insulating cloth film according to claim 8, wherein the glass fiber cloth has a yarn diameter of 6 μm or less. The method for producing a heat-insulating cloth film according to claim 8, wherein the reflective resin layer further comprises an anti-UV agent and/or a stabilizer.