CN111452439A - Multifunctional stimulation-responsive polyester film and preparation method thereof - Google Patents
Multifunctional stimulation-responsive polyester film and preparation method thereof Download PDFInfo
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- CN111452439A CN111452439A CN202010262222.6A CN202010262222A CN111452439A CN 111452439 A CN111452439 A CN 111452439A CN 202010262222 A CN202010262222 A CN 202010262222A CN 111452439 A CN111452439 A CN 111452439A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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Abstract
The invention discloses a stimulation-responsive multifunctional polyester film which comprises a stimulation-responsive layer, a wear-resistant layer, a waterproof layer, an antistatic layer, a PET (polyethylene terephthalate) base layer, an adhesive layer, a first heat-insulating layer, a core layer and a second heat-insulating layer, wherein the stimulation-responsive layer, the wear-resistant layer, the waterproof layer, the antistatic layer, the PET base layer, the adhesive layer, the first heat-insulating layer, the core layer and. The first heat-insulating layer and the second heat-insulating layer in the scheme enable the polyester film to have the heat-insulating function, the performance of the polyester film is further optimized, the stimulus response layer enables the stimulus response polyester film to have photochromic performance, and the application range of the polyester film is widened.
Description
Technical Field
The invention relates to the field of films, in particular to a stimulation-responsive multifunctional polyester film and a preparation method thereof.
Background
With the development of economy, the polyester film is widely applied to the fields of glass fiber reinforced plastic industry, building material industry, printing industry, medicine and health and the like, but the common polyester film does not have a photochromic stimulation response function, so that the application range of the polyester film is limited, and the expansion of the application range of the polyester film is hindered.
Disclosure of Invention
Aiming at the technical problem that the polyester film in the prior art cannot realize photochromism, the invention discloses a stimulation-responsive multifunctional polyester film which has quick and variable photochromism performance and widens the application range of the polyester film.
In the first aspect, a stimuli-responsive polyester film comprises a stimuli-responsive layer, a wear-resistant layer, a waterproof layer, an antistatic layer, a PET (polyethylene terephthalate) base layer, an adhesive layer, a first heat-insulating layer, a core layer and a second heat-insulating layer which are sequentially arranged from top to bottom.
The utility model provides a pair of stimulus response nature polyester film, include by the stimulus response layer that sets gradually from the top down, the wearing layer, the waterproof layer, the antistatic layer, the PET basic unit, the gluing layer, first thermal-insulated heat preservation, sandwich layer and the thermal-insulated heat preservation of second, first thermal-insulated heat preservation and the thermal-insulated heat preservation of second in this scheme make this polyester film possess the thermal-insulated function of heat preservation, the performance of polyester film has further been optimized, and, the setting up on stimulus response layer makes stimulus response nature polyester film have photochromic performance, the range of application of polyester film has been widened.
Further, the stimulus response layer is 5um to 10um thick.
Further, the core layer thickness is 10um to 20 um.
Further, the PET base layer film thickness is 12um to 25 um.
Further, the sum of the thicknesses of the first heat-insulation layer and the second heat-insulation layer is 5um to 10 um.
The thickness of each layer is reasonable, so that the function of the stimulus-responsive multifunctional polyester film is optimized, the service life of the stimulus-responsive multifunctional polyester film is prolonged, and the function of the stimulus-responsive multifunctional polyester film is diversified.
In a second aspect, a method for preparing a stimuli-responsive multifunctional polyester film, comprising the steps of:
preparing a film main body: the manufacturing method comprises the following steps of manufacturing a thick sheet by adopting an extrusion method, and manufacturing a film main body by biaxial stretching, wherein the film main body sequentially comprises a wear-resistant layer, a waterproof layer, an antistatic layer, a PET (polyethylene terephthalate) base layer, an adhesive layer, a first heat-insulating layer, a core layer and a second heat-insulating layer from top to bottom;
uniformly coating a stimulus response solution on the prepared film main body through off-line coating equipment to form a stimulus response layer, wherein the coating speed is 90-120 m/min, and the coating weight per unit area is 1-20 g/m2。
According to the preparation method of the stimulus-responsive multifunctional polyester film, the formed stimulus-responsive layer has reversible photochromic performance through reasonable coating parameters of the stimulus-responsive solution, and the application range of the stimulus-responsive multifunctional polyester film is widened.
Further, the method for preparing the stimulus response solution comprises the following steps:
50ml of deionized water is placed in a dry and clean beaker to be heated to 60 ℃ in a water bath, 0-3.0 g of triethylene glycol and 2.0-2.5 g of gelatin are added into the deionized water, the mixture is stirred until the triethylene glycol and the gelatin are completely dissolved, then the temperature is reduced to 30 ℃ and the stirring is continued, then 0.5-1.5 g of ammonium molybdate is dissolved and stirred uniformly, the temperature is kept, and the ultrasonic defoaming is carried out until a stimulus response solution is obtained.
The stimulus response solution has better performance, so that the stimulus response layer has reversible photochromic performance, the performance of the stimulus response multifunctional polyester film is optimized, and the stimulus response layer is easier to coat.
Further, the PET base layer film is composed of 70% of optical grade PET raw material particles and 30% of PET polyester chips.
The PET base layer is composed of 70% of optical grade PET raw material particles and 30% of PET polyester slices, and the reasonable proportion of the optical grade PET raw material particles and the PET polyester slices further optimizes the performance of the stimulus-responsive multifunctional polyester film.
Further, the adhesive layer is one or a mixture of more of EVA hot melt adhesive, polyurethane, polyamide and EEA.
The optimization of the adhesive property of the adhesive layer improves the stability of the stimulus-responsive multifunctional polyester film and prolongs the service life of the stimulus-responsive multifunctional polyester film.
Furthermore, the first heat-insulating layer and the second heat-insulating layer both contain ultraviolet and infrared absorbing or blocking agents and optical-grade PET raw material particles, wherein the ultraviolet and infrared absorbing or blocking agents account for 10-55% of the weight, and the optical-grade PET raw material particles account for 45-90% of the weight.
The first heat-insulating layer and the second heat-insulating layer both contain ultraviolet and infrared absorbing or blocking agents with reasonable specific gravity and optical PET raw material particles, so that the heat-insulating function is optimized.
Drawings
The following drawings are merely exemplary, not all of the drawings of the disclosed aspects, and other drawings may be derived by those skilled in the art from the disclosed aspects.
FIG. 1 is a schematic diagram of one embodiment of the present disclosure.
Figure 2 is a photochromic diagram.
FIG. 3 is a comparative plot of fading process under one environment.
Fig. 4 is a comparative plot of fade in another environment.
Fig. 5 is a comparative fade process under a third environment.
Reference numerals: 1. a stimulus-responsive layer; 2. a wear layer; 3. a waterproof layer; 4. an antistatic layer; 5. a PET base layer; 6. an adhesive layer; 7. a first heat insulation layer; 8. a core layer; 9. and the second heat-insulating layer.
Detailed Description
The technical scheme of the disclosure is further explained by combining specific embodiments. The following examples are intended only to provide one possible solution and are not intended to limit the present disclosure.
As shown in fig. 1, in a first aspect, a stimulus-responsive multifunctional polyester film comprises: stimulus response layer 1, wearing layer 2, waterproof layer 3, antistatic layer 4, PET basic unit 5, gluing layer 6, first thermal-insulated heat preservation 7, sandwich layer 8 and the thermal-insulated heat preservation 9 of second that set gradually from top to bottom.
In this embodiment, by last stimulus response layer 1, wearing layer 2, antistatic layer 4, PET basic unit 5, gluing layer 6, first thermal-insulated heat preservation 7, sandwich layer 8 and the thermal-insulated heat preservation 9 of second that sets gradually under to, the combination on multiple performance layer makes this stimulus response nature multifunctional polyester film possess multiple performance, has widened stimulus response nature multifunctional polyester film's range of application.
In some possible embodiments, the stimulus-responsive layer 1 is 5um to 10um thick; the thickness of the core layer 8 is 10um to 20 um; the thickness of the PET base layer 5 film is 12um to 25 um; the sum of the thicknesses of the first heat-insulating layer 7 and the second heat-insulating layer 9 is 5um to 10 um. In order to consider the comprehensive properties of the stimuli-responsive multifunctional polyester film, the thickness of each performance layer should be properly selected within the above range so as to optimize the properties of the stimuli-responsive multifunctional polyester film.
In a second aspect, a method for preparing a stimuli-responsive multifunctional polyester film, comprising the steps of:
preparing a film main body: the manufacturing method comprises the following steps of manufacturing a thick sheet by adopting an extrusion method, and manufacturing a film main body by biaxial stretching, wherein the film main body sequentially comprises a wear-resistant layer 2, a waterproof layer 3, an antistatic layer 4, a PET (polyethylene terephthalate) base layer 5, an adhesive layer 6, a first heat-insulating layer 7, a core layer 8 and a second heat-insulating layer 9 from top to bottom;
uniformly coating a stimulus response solution on the prepared film main body through off-line coating equipment to form a stimulus response layer 1, wherein the coating speed is 90-120 m/min, and the coating weight per unit area is 1-20 g/m2。
In this embodiment, the coating parameters of the stimulus response solution should be 90-120 m/min according to the coating speed, and the coating weight per unit area should be 1-20 g/m2To set it.
In some possible embodiments, the method of preparing a stimuli-responsive solution comprises:
50ml of deionized water is placed in a dry and clean beaker to be heated to 60 ℃ in a water bath, 0-3.0 g of triethylene glycol and 2.0-2.5 g of gelatin are added into the deionized water, the mixture is stirred until the triethylene glycol and the gelatin are completely dissolved, then the temperature is reduced to 30 ℃ and the stirring is continued, then 0.5-1.5 g of ammonium molybdate is dissolved and stirred uniformly, the temperature is kept, and the ultrasonic defoaming is carried out until a stimulus response solution is obtained.
In some possible embodiments, the PET base layer 5 is composed of 70% optical grade feedstock particles and 30% PET polyester chips.
The specific weight of the optical grade raw material particles and the polyester chip is not particularly limited, and those skilled in the art can make a reasonable selection according to their own requirements.
In some possible embodiments, the adhesive layer 6 is one or more of EVA hot melt adhesive, polyurethane, polyamide, EEA.
The specific composition of the adhesive layer 6 is not limited, and can be appropriately selected by those skilled in the art as needed.
In some possible embodiments, the first insulating layer 7 and the second insulating layer 9 both contain uv, ir absorbing or blocking agent and optical grade PET raw material particles, wherein the uv, ir absorbing or blocking agent accounts for 10% to 55% by weight, and the optical grade PET raw material particles account for 45% to 90% by weight.
In the preparation of the first heat-insulating layer 7 and the second heat-insulating layer, the proportion of ultraviolet and infrared absorbing or blocking agent is 10-55% according to the requirement, and the proportion of corresponding optical-grade PET raw material particles is reasonably adjusted.
The present embodiment is mainly the arrangement of the stimulus-responsive layer 1 of the stimulus-responsive multifunctional polyester film, so that the common polyester film has the stimulus-responsive function, and the performance of the stimulus-responsive multifunctional polyester film is further optimized. The method for preparing the other performance layers of the stimuli-responsive multifunctional polyester film, except for the coating control of the stimuli-responsive layer 1, can be referred to the prior art.
Photochromic performance test: the light source used in the photochromic process was an ultraviolet lamp (Uvitron International, Intelli-ray 600, maximum light intensity of 150mw/cm2), and the distance between the sample and the ultraviolet lamp was 20cm at the time of irradiation, and the light intensity was set to the maximum. During the test, the sample is placed under an ultraviolet lamp, and is respectively irradiated for 0, 5, 10, 15 and 20 … … 60s, and images are respectively collected by using a flat-panel scanner.
Under the irradiation of ultraviolet light for 60s, the color-changing film gradually changes from no transparency to dark green and the color-changing degree deepens along with the prolonging of the irradiation time; the color of the color-changing film can be well regulated and controlled by adjusting the ultraviolet light irradiation time.
Placing the 6 color-changing films in a room temperature environment for 7 days after changing color by light, and generating color attenuation of different degrees; 6 photochromic films, the color of which is changed from light to dark before exposure and from light to dark after exposure, are basically changed linearly; this phenomenon can be seen as the effect of erasing information by the color-changing film.
The time for the color-changing film to fade can be accelerated in both a wet air environment and an oxygen environment; the oxygen environment is better than the humid air environment in the degree of color fading.
Under the environment of wet air, the temperature rise can accelerate the fading degree of the color-changing film, so that the color-changing film can complete the fading process more quickly.
While several possible embodiments of the disclosure have been described above with reference to the accompanying drawings, it is to be understood that these embodiments are not all examples of the disclosure, and that those skilled in the art may devise other embodiments in accordance with the disclosure without any inventive step, and that these embodiments still fall within the scope of the disclosure.
(1) 0-60 s, 5s per interval, as shown in FIG. 2.
The conclusion is that ① the color-changing film gradually changes from no transparency to dark green after 60s of ultraviolet irradiation and the color-changing degree deepens along with the prolonging of the irradiation time, ② the color of the color-changing film can be better regulated and controlled by adjusting the irradiation time of the ultraviolet light.
(2) A comparison graph of the fading process of the color-changing film irradiated by ultraviolet light before and after exposure for seven days in the room-temperature air environment is shown in fig. 3, the conclusion is that ① 6 color-changing films are subjected to color-changing by light and then placed in the room-temperature environment for 7 days, the color fading occurs to different degrees, ② 6 photochromic films are subjected to color change from light to dark before exposure and are subjected to color change from light to dark after exposure, and the color change is basically linear, and the information erasing effect of the color-changing film can be obtained through ③.
(3) A comparison graph of the fading process of the color-changing film irradiated by ultraviolet light under the environment of humid air and O2 at room temperature is shown in FIG. 4.
The conclusion is that ① the time for the color-changing film to fade can be accelerated in both the wet air environment and the oxygen environment, and ② the oxygen environment has better effect than the wet air environment in the degree of fading.
(3) The fading process of the color-changing film irradiated by ultraviolet light in a humid air environment at different temperatures is shown in a comparative graph, as shown in fig. 5.
① the temperature increase in a humid air environment accelerates the degree of discoloration of the color shifting film, allowing the color shifting film to complete the discoloration process more quickly.
Claims (10)
1. A stimuli-responsive multifunctional polyester film, comprising: the anti-static PET composite material comprises a stimulus response layer (1), a wear-resistant layer (2), a waterproof layer (3), an antistatic layer (4), a PET base layer (5), an adhesive layer (6), a first heat-insulating layer (7), a core layer (8) and a second heat-insulating layer (9) which are sequentially arranged from top to bottom.
2. The stimulus-responsive multifunctional polyester film according to claim 1, wherein: the thickness of the stimulus response layer (1) is 5um to 10 um.
3. The stimulus-responsive multifunctional polyester film according to claim 1, wherein: the thickness of the core layer (8) is 10um to 20 um.
4. The stimulus-responsive multifunctional polyester film according to claim 1, wherein: PET basic unit (5) thickness is 12um to 25 um.
5. The stimulus-responsive multifunctional polyester film according to claim 1, wherein: first thermal-insulated heat preservation (7) and second thermal-insulated heat preservation (9) thickness sum are 5um to 10 um.
6. A preparation method of a multifunctional stimulation-responsive polyester film is characterized by comprising the following steps:
preparing a film main body: the manufacturing method comprises the following steps of manufacturing a thick sheet by adopting an extrusion method, and manufacturing a film main body by biaxial stretching, wherein the film main body sequentially comprises a wear-resistant layer (2), a waterproof layer (3), an antistatic layer (4), a PET (polyethylene terephthalate) base layer (5), an adhesive layer (6), a first heat-insulating layer (7), a core layer (8) and a second heat-insulating layer (9) from top to bottom;
uniformly coating a stimulus response solution on the prepared film main body through off-line coating equipment to form a stimulus response layer (1), wherein the coating speed is 90-120 m/min, and the coating weight per unit area is 1-20 g/m2。
7. The method for preparing a stimuli-responsive multifunctional polyester film according to claim 6, wherein: the preparation method of the stimulus response solution comprises the following steps:
50ml of deionized water is placed in a dry and clean beaker to be heated to 60 ℃ in a water bath, 0-3.0 g of triethylene glycol and 2.0-2.5 g of gelatin are added into the deionized water, the mixture is stirred until the triethylene glycol and the gelatin are completely dissolved, then the temperature is reduced to 30 ℃ and the stirring is continued, then 0.5-1.5 g of ammonium molybdate is dissolved and stirred uniformly, the temperature is kept, and the ultrasonic defoaming is carried out until a stimulus response solution is obtained.
8. The method for preparing a stimuli-responsive multifunctional polyester film according to claim 6, wherein: the PET base layer (5) is composed of 70% of optical grade PET raw material particles and 30% of PET polyester chips.
9. The method for preparing a stimuli-responsive multifunctional polyester film according to claim 6, wherein: the adhesive layer (6) is one or a mixture of more of EVA hot melt adhesive, polyurethane, polyamide and EEA.
10. The method for preparing a stimuli-responsive multifunctional polyester film according to claim 6, wherein: the first heat-insulating layer (7) and the second heat-insulating layer (9) both contain ultraviolet and infrared absorbing or blocking agents and optical PET raw material particles, wherein the ultraviolet and infrared absorbing or blocking agents account for 10-55% of the weight, and the optical PET raw material particles account for 45-90% of the weight.
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| CN202010262222.6A CN111452439B (en) | 2020-04-06 | 2020-04-06 | Stimulus-responsive multifunctional polyester film and preparation method thereof |
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| CN202010262222.6A CN111452439B (en) | 2020-04-06 | 2020-04-06 | Stimulus-responsive multifunctional polyester film and preparation method thereof |
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| CN110588121A (en) * | 2019-10-19 | 2019-12-20 | 浙江和顺新材料有限公司 | Self-healing heat-insulation heat-preservation polyester film and preparation method thereof |
| CN110684360A (en) * | 2018-07-04 | 2020-01-14 | 长春工业大学 | Preparation method of gelatin-based photochromic film for inkless printing |
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2020
- 2020-04-06 CN CN202010262222.6A patent/CN111452439B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108045041A (en) * | 2017-09-14 | 2018-05-18 | 杭州和顺科技股份有限公司 | A kind of fenestrated membrane heat-insulated polyester film and preparation method thereof |
| CN208827231U (en) * | 2018-02-08 | 2019-05-07 | 泉州东大塑胶有限公司 | A kind of air-isolation health polyester film |
| CN110684360A (en) * | 2018-07-04 | 2020-01-14 | 长春工业大学 | Preparation method of gelatin-based photochromic film for inkless printing |
| CN209619263U (en) * | 2019-01-28 | 2019-11-12 | 浙江和顺塑业有限公司 | A kind of antistatic heat-insulation and heat-preservation fenestrated membrane structure of compound mixed type |
| CN110395034A (en) * | 2019-07-25 | 2019-11-01 | 杭州和顺科技股份有限公司 | A kind of Multifunctional sound insulation heat-insulation and heat-preservation anti-static polyester film and its preparation process |
| CN110588121A (en) * | 2019-10-19 | 2019-12-20 | 浙江和顺新材料有限公司 | Self-healing heat-insulation heat-preservation polyester film and preparation method thereof |
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