Environmentally friendly and energy-saving temperature-insulating adhesive tape and its manufacturing method

Abstract

The present invention relates to an environmentally friendly and energy-saving temperature-insulating adhesive tape, comprising: a substrate having a predetermined thickness; an insulating layer composed of a nano-silicone aerogel dispersion and a composite solid filler, the insulating layer having a predetermined thickness and disposed on one side of the substrate; and an adhesive layer disposed on the other side of the substrate, wherein the adhesive layer is provided for covering and adhering to the outside of at least one tube, a predetermined part of a mechanical device, a predetermined part of an electronic device, or the wall of a building, and the insulating layer is used to insulate against temperature.

Description

[Technical Field]

[0001] This invention relates to an adhesive tape, and more particularly to an environmentally friendly and energy-saving temperature-insulating adhesive tape, which is provided for wrapping and adhering to the surface of pipelines or equipment, thereby achieving the effects of temperature insulation, heat preservation and cold preservation. [Previous Technology]

[0002] At present, most pipelines and equipment are still covered with insulating rock wool for energy saving and heat preservation. However, it is easy for water vapor to penetrate and cause corrosion under insulation. Rock wool is industrial waste and the treatment and recycling costs are high. It has been gradually replaced by air blankets, pre-foamed materials and heat preservation coatings.

[0003] The thickness of the covering material required for conventional thermal insulation and cold insulation projects varies depending on its thermal conductivity coefficient. Conventional thermal insulation and cold insulation coatings require multiple sprays (each layer is about 200-300um) to achieve a layered thickness. Especially at lower temperatures (room temperature to 60 degrees Celsius), the coating dries slowly, resulting in a long construction time. Therefore, conventional aerosol blankets, pre-foamed materials, and thermal insulation and cold insulation coatings still need improvement.

[0004] In view of this, how to eliminate the above-mentioned deficiencies is the technical difficulty that the inventor of this case wants to solve; therefore, based on years of experience in related industries, the inventor of this case has devoted himself to research and improvement for many years and finally successfully developed this case, thus giving birth to this invention to improve its effectiveness. [Summary of the Invention]

[0005] In view of the above-mentioned disadvantages, the present invention provides an environmentally friendly and energy-saving temperature-insulating adhesive tape, comprising: a substrate having a predetermined thickness; an insulating layer composed of a nano-silicone aerogel dispersion and a composite solid filler, the insulating layer having a predetermined thickness and disposed on one side of the substrate; and an adhesive layer disposed on the other side of the substrate, wherein the adhesive layer is provided for covering and adhering to the outside of at least one tube, a predetermined part of a mechanical device, a predetermined part of an electronic device, or the wall of a building, and the insulating layer is used to insulate against temperature.

[0006] Preferably, the composite solid filler of the insulating layer comprises an inorganic pigment, a heat-insulating filler, and other functional fillers. The inorganic pigment may be at least one of micron-sized titanium dioxide, talc, carbon black, etc., in a proportion of 0.5 to 7 grams. The heat-insulating filler may be at least one of hollow glass beads, expanded perlite, diatomaceous earth, etc., in a proportion of 5 to 10 grams. The other functional filler may be at least one of quartz powder, mica, metakaolin, calcium carbonate, saponin, kaolin, etc., in a proportion of 7 to 25 grams.

[0007] Preferably, the predetermined thickness of the insulating layer is 2mm to 1cm.

[0008] Preferably, the substrate is any one of aluminum foil fiber cloth, glass fiber cloth or non-woven fabric.

[0009] Preferably, the temperature range is from -200 degrees Celsius to 160 degrees Celsius.

[0010] Traditional thermal insulation and cold insulation coatings are applied by spraying or brushing. However, the required thickness of the coating material for thermal insulation and cold insulation is often several centimeters. If spraying or brushing is used, a lot of time will be spent on stacking the thickness. Although traditional coating materials such as rock wool and precast foamed pipes have short construction time, they have problems such as corrosion under thermal insulation, thick thickness, fire resistance, and waterproofness. Therefore, this invention solves the problem of the time required for stacking the thickness of thermal insulation and cold insulation coatings, and has the characteristics of low water vapor permeability, good waterproofness, good flame retardancy, thin required thickness, and good adhesion to equipment and pipelines.

Implementation Method

[0011] To facilitate the explanation of the content and effects of the present invention, specific embodiments are listed below with reference to the figures. Please refer to Figure 1 and Figure 2. The environmentally friendly and energy-saving temperature-insulating adhesive tape of the present invention includes:

[0012] A substrate 10 having a predetermined thickness. In this embodiment, the substrate 10 is any one of aluminum foil fiber cloth, glass fiber cloth or non-woven fabric, but is not limited to this.

[0013] An insulating layer 20 is formed by drying a heat-insulating and cold-insulating coating 20A composed of a nano-silicone aerogel dispersion and a composite solid filler. The insulating layer 20 has a predetermined thickness and is disposed on one side of the substrate 10. The predetermined thickness of the insulating layer 20 is 2 mm to 1 cm, but is not limited to this.

[0014] An adhesive layer 30 is disposed on the other side of the substrate 10, and is provided to cover and adhere to the outside of at least one tube, a predetermined part of a mechanical device, a predetermined part of an electronic device or a wall of a building, and is used to insulate against temperature, wherein the temperature range is from -200 degrees Celsius to 160 degrees Celsius.

[0015] In detail, the preparation method of the nano-silicone aerogel dispersion mainly involves the following steps: (1). First, a Tritonx-100 is dissolved in an aqueous solution to form a first solution. The proportion of Tritonx-100 is between 0.1 and 1.2 grams, preferably 0.5 grams; the amount of the aqueous solution is between 15 and 30 grams, preferably 25 grams; (2). A separately prepared silica aerogel is added to the first solution and continuously mechanically stirred to obtain a silica aerogel slurry. The silica aerogel has the following mass: density: 0.11 g / cm3, average particle size: 1.4-2 μm, porosity: 95%. %, Specific surface area: 584.06m2 / g is preferred, and the mechanical stirring is preferably carried out at 300rpm for 10-15min; (3). In the above process, sodium dodecylbenzenesulfonate, sodium dodecyl polyoxyethylene sulfate, hydroxycellulose thickener and water are mixed and stirred continuously to form a second solution. The proportions are as follows: the amount of sodium dodecylbenzenesulfonate is between 0.3 and 1.2g, preferably 0.5g; the amount of sodium dodecyl polyoxyethylene sulfate is between 0.05 and 1g, preferably 0.5g; the amount of hydroxycellulose thickener is between 0.1 and 0.3g, preferably 0.3g; the amount of water is between 1g and 1g. The amount of water-based acrylic is between 5 and 30 grams, preferably 25 grams; the continuous stirring is preferably at 300 rpm for 30-40 minutes; (4) Then, an aqueous acrylic is added to the second solution and continuously stirred until homogeneous to obtain a third solution, wherein the aqueous acrylic can be at least one of acrylic emulsion, styrene-acrylate emulsion and vinyl acetate-acrylic emulsion, and the amount of the aqueous acrylic is between 30 and 50 grams, preferably 45 grams; the continuous stirring after adding the aqueous acrylic to the second solution is preferably at 300 rpm for 5-10 minutes; (5) Then, the third solution is added to the silica aerogel slurry and continuously stirred. A silica aerogel dispersion is obtained by mixing evenly. It is preferred that the third solution is added to the silica aerogel slurry and the stirring is continued at 300 rpm for 5 to 10 minutes. (6) Then, the silica aerogel dispersion is placed on a drum ball mill for grinding to produce a grinding slurry. It is preferred that the drum ball mill is continuously ground at 300 rpm for 240 minutes (4 hours). Zirconia beads with a size of 2 mm are used as grinding balls, and the ball filling ratio is 1:1 of the silica aerogel volume. (7) Finally, the grinding slurry containing grinding balls (i.e., zirconia beads) is filtered through a filter screen to obtain a nano silica aerogel dispersion. It is preferred that the filter screen is 10 mesh.

[0016] The composite solid filler comprises an inorganic pigment 21, a heat-insulating filler 22, and an other functional filler 23. The inorganic pigment may be at least one of micron-sized titanium dioxide, talc, carbon black, etc., in a proportion of 0.5 to 7 grams; the heat-insulating filler may be at least one of hollow glass beads, expanded perlite, diatomaceous earth, etc., in a proportion of 5 to 10 grams; the other functional filler may be at least one of quartz powder, mica, metakaolin, calcium carbonate, saponin, kaolin, etc., in a proportion of 7 to 25 grams.

[0017] Among them, quartz powder has the functions of filling gaps, preventing corrosion and wear resistance; mica has the function of preventing corrosion; metakaolin has the function of acid resistance; calcium carbonate has the functions of whitening, insulation and thermal stability; soap clay has the functions of weather resistance and corrosion resistance; and kaolin has the functions of weather resistance and corrosion resistance.

[0018] Please refer to Figures 3 to 5. The manufacturing steps of the environmentally friendly and energy-saving temperature-insulating adhesive tape of the present invention include:

[0019] Preparation of coating S1: After the composite solid filler is completed, the previously prepared nano-silicone aerogel dispersion (ratio of 101.8 g) is first mechanically stirred to make the liquid uniform. The mechanical stirring is preferably performed at 300 rpm for 3 to 5 minutes. Then, the dry composite solid filler (ratio between 15 and 33 g) is slowly added and stirred continuously at 300 rpm for 3 to 5 minutes to form a heat insulation and cold insulation coating 20A. After the heat insulation and cold insulation coating 20A is stirred evenly, it is placed in the discharge mixing tank 41 of a coating machine 40.

[0020] Preparation of substrate S2: The substrate 10 has a predetermined thickness and is any one of aluminum foil fiber cloth, glass fiber cloth or non-woven fabric. The substrate 10 is placed flat under the coating machine 40.

[0021] Coating S3: The coating machine 40 includes a scraper module 42 and a control module 43. The control module 43 is electrically connected to the scraper module 42 and the discharge mixing tank 41. The control module 43 is used to adjust the height of the scraper module 42, set the coating thickness of the thermal insulation and cold insulation coating 20A, set the forward speed of the scraper module 42 and the discharge speed of the discharge mixing tank 41, so that the thermal insulation and cold insulation coating 20A can be coated evenly and with a uniform thickness. In this embodiment, the thickness range of the thermal insulation and cold insulation coating 20A is 2mm~1cm.

[0022] Furthermore, the thermal insulation and cold insulation coating 20A is placed in the discharge mixing tank 41 of the coating machine 40. The discharge mixing tank 41 needs to have a stirring device inside to prevent the coating from being left to separate for a long time. The stirring speed is 150 rpm. The substrate 10 is fixed to the front end of the coating machine 40, and one end is placed under the coating scraper module 42 and fixed with a clamp. The clamp is pulled back at a fixed speed of 5-20 cm / s. The speed is adjusted according to the thickness of the thermal insulation and cold insulation coating 20A. The thicker the coating, the slower the speed needs to be (too fast a speed will result in insufficient thickness). At the same time, the discharge switch is opened, and the thermal insulation and cold insulation coating 20A is discharged onto the substrate 10 under the scraper module 42 at a discharge rate of 100-400 g / s. While the clamp is being pulled, the thermal insulation and cold insulation coating 20A will be coated on the substrate 10 with a uniform thickness.

[0023] Cut S4: After the coated substrate 10 is output to a predetermined length by the coating machine 40, it is cut by a cutting device 50.

[0024] Drying S5: Place the cut substrate 10 on a multi-layer cabinet or a multi-layer trolley, and push it into a drying room manually or electrically. The drying room temperature is 45-65℃. Depending on the coating thickness, the drying time is 15-90 min. After drying, the surface can be cured and the parts can be collected and used.

[0025] Please refer to Figures 6 and 7, which show the steps of another embodiment of the present invention. Since the main steps are the same as those in the foregoing embodiments, the similarities will not be repeated here.

[0026] In this embodiment, the substrate preparation S2 involves: flatly placing the substrate 10 below a coating machine 40, with one end of the substrate 10 detachably fixed to a roll-up device 60; and

[0027] Coating S3: The discharge mixing tank 41 outputs the heat-insulating and cold-insulating coating 20A, and the scraper module 42 applies the heat-insulating and cold-insulating coating 20A evenly and uniformly to the substrate 10. At the same time, the winding device 60 pulls the substrate 10 at a predetermined speed, so that the substrate 10 enters a drying channel 70 at 45~65 degrees Celsius for drying. After drying, the heat-insulating and cold-insulating coating 20A hardens to form an insulating layer 20 and is wound up on the winding device 60. In other words, in step coating S3, coating, drying and winding are carried out simultaneously and continuously, which can improve work efficiency.

[0028] The insulating layer 20 of the present invention is formed by thoroughly mixing the nano-silicone aerogel dispersion and the composite solid filler. Therefore, the nano components of the nano-silicone aerogel dispersion can be completely diffused and filled between the particles of the composite solid filler. After drying, the water evaporates, so it is quickly dried and solidified, and after drying, it aggregates into a high-hardness form, which is sufficient to completely isolate the temperature.

[0029] The adhesive layer 30 of the present invention is a high-temperature resistant adhesive (which can withstand 160 degrees Celsius for a long time) or a low-temperature adhesive (which needs to maintain its adhesion when alternating between room temperature and low temperature), selected according to the equipment's heat preservation and cold preservation requirements; the function of the adhesive layer 30 is to improve the adhesion between the coated tape and pipelines, equipment, and between layers, prevent water vapor from penetrating the gaps and corroding the pipelines, and the present invention has a water vapor permeability test report for the coated tape, which overcomes the disadvantage of traditional thermal insulation rock wool, even if the outer layer is covered with an aluminum strip as a protective layer, that it is easy to generate gaps between it and the equipment, pipelines, and between layers, causing water vapor to penetrate and corrode the pipelines.

[0030] The above detailed description is a specific description of one feasible embodiment of the present invention. However, the embodiment is not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the spirit of the present invention should be included in the patent scope of this case. [Simplified Explanation of the Diagram]

[0031] Figure 1 is a cross-sectional view of the present invention. Figure 2 is a partially enlarged view of the barrier layer, continuing from Figure 1. Figure 3 is a flowchart of the steps of the present invention. Figure 4 is a schematic diagram of the coating and cutting process, continuing from Figure 3. Figure 5 is a schematic diagram of the coating machine structure of the present invention. Figure 6 is a flowchart of another embodiment of the present invention. Figure 7 is a schematic diagram of the coating, drying, and winding process, continuing from Figure 6.

Claims

1. An environmentally friendly and energy-saving temperature-insulating adhesive tape, comprising: a substrate, which is any one of aluminum foil fiber cloth, glass fiber cloth, or non-woven fabric, having a predetermined thickness; an adhesive layer is provided on the other side of the substrate, the adhesive layer being used to cover and adhere to the outside of at least one tube, a predetermined part of a mechanical device, a predetermined part of an electronic device, or a wall of a building, and the insulating layer is used to insulate against temperature, the temperature range being -200 degrees Celsius to 160 degrees Celsius; and an insulating layer composed of a nano-silicone aerogel dispersion and a composite solid filler, the insulating layer being... The layer has a predetermined thickness and is disposed on at least one side of the substrate. The composite solid filler of the insulating layer comprises an inorganic pigment, a heat-insulating filler, and other functional fillers. The inorganic pigment may be at least one of micron-sized titanium dioxide, talc, carbon black, etc., in a proportion of 0.5 to 7 grams. The heat-insulating filler may be at least one of hollow glass beads, expanded perlite, diatomaceous earth, etc., in a proportion of 5 to 10 grams. The other functional filler may be at least one of quartz powder, mica, metakaolin, calcium carbonate, saponin, kaolin, etc., in a proportion of 7 to 25 grams.

2. The environmentally friendly and energy-saving temperature-insulating adhesive tape as described in claim 1, wherein the predetermined thickness of the insulating layer is 1mm to 1cm.

3. A method for preparing an environmentally friendly and energy-saving temperature-insulating adhesive tape, comprising the following steps: preparing a coating: mechanically stirring a nano-silicone aerogel dispersion to make the liquid uniform, the mechanical stirring being performed at 300 rpm for 3-5 minutes; slowly adding a composite solid filler and continuously stirring at 300 rpm for 3-5 minutes to form a heat-insulating and cold-insulating coating; after the heat-insulating and cold-insulating coating is stirred evenly, it is placed in the discharge mixing tank of a coating machine, wherein the proportion of the nano-silicone aerogel dispersion is 101.8 grams and the proportion of the composite solid filler is 15-33 grams; preparing a substrate: the substrate has a predetermined thickness and is any one of aluminum foil fiber cloth, glass fiber cloth, or non-woven fabric; the substrate is placed flat under a coating machine; coating: the coating machine includes a doctor blade module and a control module, the control module being electrically connected to the doctor blade module and the discharge mixing tank, and the control module adjusting the doctor blade... The coating process includes: setting the height of the scraper assembly, setting the coating thickness of the thermal insulation coating, setting the forward speed of the scraper assembly, and setting the discharge speed and stirring speed of the discharge mixing tank. The discharge mixing tank outputs the thermal insulation coating, and the scraper assembly applies the thermal insulation coating to the substrate with a uniform and consistent thickness. Cutting: After the coated substrate is output to a predetermined length by the coating machine, it is cut by a cutting device. Drying: The cut substrate with the thermal insulation coating is placed on a multi-layer cabinet or a multi-layer trolley and sent into a drying channel at 45-65 degrees Celsius for drying. After drying, the thermal insulation coating hardens to form an insulating layer. The insulating layer is located on one side of the substrate, and an adhesive layer is provided on the other side of the substrate. The adhesive layer is used to adhere to the outside of at least one pipe, a predetermined part of a mechanical device, a predetermined part of an electronic device, or the wall of a building, and the insulating layer insulates against temperature.

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