KR20200130934A - Insulation composition having expancel microspheres and process for their preparation - Google Patents

Abstract

The present invention relates to a heat insulating material composition having expandable microspheres and a method of manufacturing the same. More particularly, the present invention provides: a heat insulating material composition having expandable microspheres, which comprises, with respect to a mixture in which 1 part by weight of expanded thermoplastic microspheres are added into 100 parts by weight of silicone oil, 100 parts by weight of a curing agent, 3 to 7 parts by weight of a thickener, 10 to 15 parts by weight of a flame retardant and 1 to 5 parts by weight of a release agent as an additive; and a manufacturing method thereof. Accordingly, the present invention can manufacture a heat insulating material composition having high heat insulation performance by lowering thermal conductivity as the expanded thermoplastic microspheres are directly dispersed in the silicone oil, and the viscosity of the silicone oil is increased through a thickener so as to increase cohesion with the expanded thermoplastic microspheres, thereby increasing a dispersion rate.

Description

Insulating material composition having expandable microspheres and method for manufacturing the same TECHNICAL FIELD [Insulation COMPOSITION HAVING EXPANCEL MICROSPHERES AND PROCESS FOR THEIR PREPARATION}

The present invention relates to a composition of an insulating material having expandable microspheres and a manufacturing technology thereof, and more particularly, to lower thermal conductivity and increase thermal insulation performance by improving the dispersion ratio of expandable microspheres in silicone oil. It relates to a heat insulating material composition having an expandable microspheres so that the heat insulating material composition can be prepared, and a method of manufacturing the same.

Valves, pipes, equipment and devices used throughout the industry are mostly exposed to outside air, so it is difficult to maintain the set temperature. In order to compensate for this, heat insulation is performed by wrapping the device with a separate insulation material.

However, conventional industrial insulation materials have a disadvantage in that it is difficult to apply a solid insulation material having a fixed shape in the case of a device having a sophisticated shape such as a complicatedly entangled pipe or a valve handle.

In order to overcome these shortcomings, it has been replaced with an insulation method of wrapping the periphery of the device with insulation fibers in the form of non-woven fabrics. However, since it does not completely enclose itself in accordance with the shape of the device, it is impossible to insulate through close contact, and thus, it is difficult to prevent heat loss in the near-bottom manner.

In addition, the industrial insulation material containing organic material has a disadvantage that it cannot be used in an industrial site in a high temperature environment due to weak heat resistance.

1 is a view showing an example of construction of an insulation material for thermal insulation of devices having an atypical shape in the related art, and FIGS. 2A and 2B are views showing an example of a case in which devices having an atypical shape in the related art were left without heat insulation to be.

Figure 1 (a) is a case of thermal insulation by wrapping the periphery of the device with a non-woven insulating fiber, and (b) shows a method of warming with a detachable thermal insulation cover. Here, the thermal insulation cover is non-flammable. It is manufactured in the form of a cover by filling the non-woven form of insulating fiber into the fabric of the material.

2A and 2B are cases in which the valves are left unheated for reasons such as an increase in the unit price of an insulating material, and show thermal images at this time. As such, heat insulation is poor, and as it is left without insulation, personal protection of workers is not secured, and energy loss is caused, resulting in a problem of incurring significant annual energy costs.

Korean Patent Registration No. 10-0707336 relates to a thermal insulation insulating material using a glass fiber metal yarn woven fabric, and a glass nonwoven fabric and a glass fiber metal yarn woven fabric or a ceramic fiber metal yarn woven fabric are formed in a layered form inside and coated with silicone on the outer surface. It is an insulating insulating material composed of exterior silicone coated cloth. By weaving glass fiber together with metal yarn to form a cloth, it can be reused many times by making up for the weakness of glass fiber, which is weak in durability, and can suppress the generation of harmful dust. , When attaching to a device, it is a spring of a certain length with binding rings formed at both ends, and it is configured to be resiliently attached to the hook formed on the thermal insulation material and pulled by the tension of the spring, making it easy to attach and detach. It is characterized in that it is capable of maintaining a strong binding force with the elasticity of the spring even in the vibration of the device.

Korea Published Utility Model No. 20-2011-0001967 relates to a thermal insulation cover for industrial facilities. Ribbed surfaces of a certain width at both ends of an opening that can be fixed by covering and fixing various pipes and valves, etc. They are formed, and heat-resistant male and female Velcro is formed on the rib surfaces, so that the opening can be kept closed by adhesion of the male and female Velcro to the opening.

Korean Patent Registration No. 10-0707336 (registered on 2007.04.06) Korean Utility Model No. 20-2011-0001967 (released on February 28, 2011)

An embodiment of the present invention is to improve the dispersion rate of the expandable microspheres in silicone oil to lower the thermal conductivity (thermal conductivity) and increase the thermal insulation performance to prepare an insulating material composition having expandable microspheres, and It is intended to provide a method of manufacturing the same.

In one embodiment of the present invention, the expanded thermoplastic microspheres, which are blown due to their light mass, are injected into the silicone oil from the lower side of the pressurized stirrer and are directly dispersed to improve the dispersion rate so that they can be easily inserted into the silicone oil, which is an insulating material. It is intended to provide an insulating material composition having expandable microspheres and a method of manufacturing the same.

An embodiment of the present invention is to increase the viscosity of the silicone oil by adding a thickener to silicone oil, which is a heat insulating material, to increase the adhesion of expandable microspheres, so that the dispersion of the expandable microspheres is evenly distributed during agitation, thereby lowering the thermal conductivity to enhance the insulation properties. It is intended to provide an insulating material composition having an expandable microspheres and a method of manufacturing the same.

An embodiment of the present invention is to provide an insulating material composition having expandable microspheres and a method of manufacturing the same, which can increase the thermal insulation performance by adhesive construction in a form that completely encloses itself according to the corresponding shape of devices having an atypical shape. do.

Among the embodiments, the heat insulating material composition having expandable microspheres includes 100 parts by weight of a curing agent as an additive, and 3 to 3 to a thickener for a mixture in which 1 part by weight of expanded thermoplastic microspheres are inserted into 100 parts by weight of silicone oil. 7 parts by weight, 10 to 15 parts by weight of a flame retardant, and 1 to 5 parts by weight of a release agent.

Among the embodiments, the method of manufacturing an insulating material composition having expandable microspheres comprises the steps of: (a) inserting expanded thermoplastic microspheres into silicone oil and stirring so that they are evenly dispersed, (b) the expanded thermoplastic microspheres and stirred silicone Mixing and stirring the curing agent in a ratio of 1:1 to the oil, (c) increasing the viscosity of the silicone oil by adding a thickener to the curing agent and the stirred silicone oil, and (d) the silicone to which the thickener is added And adding a flame retardant and a release agent to the oil to prepare an insulating material composition in the form of a plaster that is easily detachable.

In the step (a), 1 part by weight of the thermoplastic microspheres expanded in the lower direction of the pressure stirrer are added to 100 parts by weight of the silicone oil in the pressure stirrer to be directly dispersed in the silicone oil, and the pressure of the pressure stirrer is adjusted. The expanded thermoplastic microspheres that are suspended in the air are settled down given at 2 to 3 atm, contacted with the silicone oil, and stirred at 200 to 300 RPM for 20 minutes to determine the dispersion rate of the expanded thermoplastic microspheres inserted into the silicone oil. You can increase it.

In the step (b), 100 parts by weight of a curing agent may be mixed with 100 parts by weight of the expanded thermoplastic microspheres and 100 parts by weight of the agitated silicone oil, and stirred at 300 to 400 RPM for 15 to 25 minutes.

In the step (c), 5 parts by weight of a thickener is added to 100 parts by weight of the silicone oil stirred with the curing agent to increase the viscosity of the silicone oil to increase the cohesive force with the expanded thermoplastic microspheres and to increase the dispersion rate during stirring. You can increase it.

In the step (d), 10 to 15 parts by weight of a flame retardant and 1 to 5 parts by weight of a release agent may be added to the silicone oil to which the thickener is added, and the mixture may be stirred at 250 to 350 RPM for 25 to 35 minutes.

The disclosed technology can have the following effects. However, since it does not mean that a specific embodiment should include all of the following effects or only the following effects, it should not be understood that the scope of the rights of the disclosed technology is limited thereby.

In the heat insulating material composition having expandable microspheres according to an embodiment of the present invention and a method of manufacturing the same, the expanded thermoplastic microspheres, which are blown due to their light mass, are injected from the lower side of the pressure stirrer and are directly dispersed in silicone oil, which is an insulating material, and inserted. This easy and low-speed stirring allows the expansion of thermoplastic microspheres to be evenly mixed with silicone oil to improve dispersion, thereby lowering thermal conductivity and increasing thermal insulation performance.

The insulating material composition having expandable microspheres according to an embodiment of the present invention and a method of manufacturing the same include adding a thickener to silicone oil, which is an insulating material, to increase the viscosity of the silicone oil to increase the adhesion of expandable microspheres. As the dispersion of microspheres is even, the thermal conductivity can be lowered to improve the thermal insulation properties.

One embodiment of the present invention is an insulating material composition having expandable microspheres and a method of manufacturing the same, an insulating material composition capable of enhancing thermal insulation performance by adhesive construction in a form that completely surrounds itself to fit the corresponding shape of devices having an atypical shape Can provide.

Therefore, the heat insulation material manufactured according to an embodiment of the present invention has a thermal conductivity of 0.04 W/m·K or less, and the thermal conductivity of an insulation material consisting of expandable microspheres based on silicone oil is lower than 0.07 W/m·K or more, and has a thickness As it can be reduced by more than 40%, it is excellent in constructability and has the effect of maximizing space utilization.

1 is a view showing an example of construction of an insulation material for thermal insulation of devices having a conventional atypical shape.
2A-2B are diagrams showing examples of devices having a conventional atypical shape that are left without thermal insulation.
3 is a diagram for explaining an expandable microsphere.
4 is a process chart for explaining a method of manufacturing an insulating material composition having expandable microspheres according to an embodiment of the present invention.
5A-5B are SEM diagrams showing states before and after the thickener addition process in FIG. 4.
6A-6B are actual photographs showing an insulating material composition manufactured through the manufacturing process in FIG. 4.

Since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only those effects, the scope of the present invention should not be understood as being limited thereto.

Meanwhile, the meaning of terms described in the present application should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from other components, and the scope of rights is not limited by these terms. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

When a component is referred to as being "connected" to another component, it should be understood that although it may be directly connected to the other component, another component may exist in the middle. On the other hand, when it is mentioned that a certain component is "directly connected" to another component, it should be understood that no other component exists in the middle. On the other hand, other expressions describing the relationship between the constituent elements, that is, "between" and "just between" or "neighboring to" and "directly neighboring to" should be interpreted as well.

Singular expressions are to be understood as including plural expressions unless the context clearly indicates otherwise, and terms such as “comprise” or “have” refer to implemented features, numbers, steps, actions, components, parts, or It is to be understood that it is intended to designate that a combination exists and does not preclude the presence or addition of one or more other features or numbers, steps, actions, components, parts, or combinations thereof.

In each step, the identification code (for example, a, b, c, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, and each step has a specific sequence clearly in context. Unless otherwise stated, it may occur differently from the stated order. That is, each of the steps may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be construed as having meanings in the context of related technologies, and cannot be construed as having an ideal or excessive formal meaning unless explicitly defined in the present application.

3 is a diagram for explaining an expandable microsphere.

Referring to FIG. 3, the expandable microsphere refers to a hollow foam containing a foaming agent (gas) enclosed in a thermoplastic resin shell. Here, the sphere is filled with gas, for example, Hydrocarbon, and the shell of the sphere is made of a thermoplastic resin.

Upon heating, the foaming agent (gas) expands to increase the internal pressure of the thermally expandable thermoplastic microspheres, and at the same time, the thermoplastic resin cell softens to expand the thermally expandable thermoplastic microspheres, thereby forming expanded thermoplastic microspheres. Expanded thermoplastic microspheres usually have a diameter of at least 2 to 5 times the diameter of thermally expandable thermoplastic microspheres. For example, for thermally expandable thermoplastic microspheres having a cell thickness of 2 µm and a particle size of 12 µm before expansion, the cell thickness after expansion is 0.1 µm and a particle size of 40 µm after expansion to form thermoplastic microspheres.

The thermally expandable thermoplastic microspheres are available as dry free-flowing thermally expandable thermoplastic microspheres or as a slurry of thermally expandable thermoplastic microspheres in which the thermally expandable thermoplastic microspheres are present in a carrier liquid.

Thermally expandable thermoplastic microspheres or expanded thermoplastic microspheres are used for a variety of applications. Thermally expandable thermoplastic microspheres are used, for example, in thermal printing paper, porous ceramics, injection molding, extrusion of thermoplastic materials, printing inks, paper and boards. Expanded thermoplastic microspheres are used, for example, as emulsion explosives, liquid based paints, liquid based coatings and as a sensitizer of various thermosetting materials (e.g., artificial marble, polyester putty and artificial wood). . These expandable thermally expandable thermoplastic microspheres and/or expanded thermoplastic microspheres can also be used in cementitious compositions, for example to impart freeze-thaw durability to these cementitious compositions.

Transporting expanded thermoplastic microspheres is not commercially feasible as it requires significant volume due to the expanded size of the expanded thermoplastic microspheres. Therefore, thermally expandable thermoplastic microspheres are transported from a slurry of thermally expandable thermoplastic microspheres to end users who produce expanded thermoplastic microspheres in situ. These thermally expandable thermoplastic microspheres are then expanded to form expanded thermoplastic microspheres in or adjacent to the end use, for example, in a process for any of the aforementioned uses.

Insulation composition according to an embodiment of the present invention may be made by mixing the expanded thermoplastic microspheres with a silicone oil as a subject.

Insulation composition

The insulation composition according to an embodiment is an additive to a mixture in which 1 part by weight of expanded thermoplastic microspheres are inserted into 100 parts by weight of silicone oil, and 100 parts by weight of a curing agent, 3 to 7 parts by weight of a thickener, 10 to 15 parts by weight of a flame retardant , It may be made by mixing 1 to 5 parts by weight of a release agent.

Here, silicone oil means a liquid silicone resin with a relatively low degree of polymerization.

In general, silicone resin is a dendritic silicone in which a three-dimensional network structure is introduced into diorganopolysiloxane, and a methyl group, a phenyl group, a hydroxy group on silicon in the form of a siloxane bond (Si-O bond) in which silicon and oxygen are alternately formed. It is a thermoplastic synthetic resin to which the like is added.

In one embodiment, the insulation composition is based on a silicone oil and can be mixed with expanded thermoplastic microspheres, which are hollow foams. Here, the expanded thermoplastic microspheres have low thermal conductivity and are light, so that the density and thermal conductivity can be lowered as they are introduced into the silicone oil. Accordingly, the thermal conductivity of the heat insulating material composition is lowered and the heat insulating property can be relatively improved.

However, the expanded thermoplastic microspheres are difficult to measure and have a light mass, so that they are difficult to mix with silicone oil because they are blown up in the air and cause a lot of loss, and dispersion is not even, so there is a problem that it cannot be lowered any more at a certain thermal conductivity.

Accordingly, in an embodiment of the present invention, an injection pipe is provided on the lower side of the device when a pressure stirrer is injected with the expanded thermoplastic microspheres that are blown due to their light mass, and they are injected into the inside of the silicone oil through a pump operation so that they can be directly dispersed. . At this time, the pressure of the pressurized stirrer is applied to 2~3atm, the expanded thermoplastic microspheres floating in the air in the pressurized stirrer are settled down, contacted with the silicone oil, and then stirred so that the expanded thermoplastic microspheres are evenly dispersed.

The silicone oil mixed with the expanded thermoplastic microspheres is stirred and mixed with a curing agent in a ratio of 1:1.

The silicone curing agent chemically bonds the molecules of the silicone resin compound to each other to form a net structure, and organic peroxide may be used.

In one embodiment, the silicone oil is formed into a cured foam by mixing the expanded thermoplastic microspheres, which is a hollow foaming agent, and a curing agent, and the cured foam has a plaster shape having a predetermined thickness including a porous structure. At this time, the thickness of the cured foam may be adjusted according to the added content of the expanded thermoplastic microspheres.

Thickening agents are substances that increase the viscosity of a liquid, and include Cellulose derivatives type, Alkaliswellable type, and Urethane associative type. In one embodiment, the thickener serves to increase the viscosity of the silicone oil, thereby increasing the adhesion of the expanded thermoplastic microspheres, thereby increasing the dispersion rate during stirring.

The flame retardant is an additive added to improve combustion resistance, and a phosphorus flame retardant or a melamine compound may be used.

Phosphorus-based flame retardants are compounds containing phosphorus, which have the effect of blocking active radicals in the gaseous phase, and high molecular weight polyphosphoric acid generated during the pyrolysis process promotes the formation of carbides on the surface of the product, thereby preventing the movement of oxygen and heat into the material. It plays a role of blocking at the same time.

Melamine is a heterocyclic amine, an organic base, and a trimer of cyanamide. 66% of the mass is made of nitrogen, so when mixed with a resin, it is resistant to fire. Here, melamine is used in the form of a powder so that it can be distributed evenly throughout the silicone oil.

Parting agents refer to lubricants or waxes applied to the inner surface of the mold so that the plastic molded product does not adhere to the inner surface of the mold and cannot be removed in the case of compression molding or casting. Silicone resins, polyvinyl alcohol, paraffin, waxes, Teflon dispersion (dispersion phase of polytetrafluoroethylene), and the like are used as the mold release agent.

When a thickener, a flame retardant, and a release agent are mixed and stirred in a silicone oil in which the expanded thermoplastic microspheres and a curing agent are mixed, a plaster-type insulation composition that is easily detachable can be obtained.

Plaster-shaped cured foam can be cut with a cutter according to product specifications and used as insulation.

Insulation composition manufacturing method

4 is a process chart for explaining a method of manufacturing an insulating material composition having expandable microspheres according to an embodiment of the present invention.

Referring to FIG. 4, a method of manufacturing an insulating material composition having expandable microspheres according to an embodiment includes the step of inserting expanded thermoplastic microspheres (S100), mixing a curing agent (S200), adding a thickener (S300), and completion of production. It includes step S400.

In the step of inserting the expanded thermoplastic microspheres (S100), the expanded thermoplastic microspheres may be inserted into the silicone oil and stirred so that they are evenly dispersed. 1 part by weight of expanded thermoplastic microspheres is inserted into 100 parts by weight of the silicone oil main body in the inside of the pressure stirrer, and stirred at a low speed of 200 to 300 RPM for 20 minutes.

In one embodiment, when injecting the expanded thermoplastic microspheres, which are blown by the weight of the pressure stirrer, an input tube is installed at the lower part of the device, and by pump operation, the injection tube is directly injected into the inside of the silicone oil accommodated in the pressure stirrer through the lower input tube. Can be distributed. In a conventional pressurized stirrer, when an injection tube is provided at the top and expanded thermoplastic microspheres are injected from the top to the bottom, they cannot be precipitated in the silicone oil at the bottom and float on the empty space at the top. Here, the expanded thermoplastic microspheres are introduced to the lower side of the pressurized stirrer to physically improve the dispersion ratio of the silicone oil. At this time, the pressure of the pressurized stirrer is applied to 2~3atm, and the expanded thermoplastic microspheres floating in the air in the pressurized stirrer are settled down to be dispersed by contacting the silicone oil main body.

A hollow foam may be included by inserting the expanded thermoplastic microspheres into the silicone oil and stirring so as to be evenly dispersed.

The curing agent mixing step (S200) may be stirred by mixing a curing agent in a ratio of 1:1 with silicone oil. For example, 100 parts by weight of a curing agent is mixed with 100 parts by weight of a silicone oil containing a hollow foam, and dispersed and stirred at 300 to 400 RPM for 15 to 25 minutes. Here, the silicone oil used as the main material is in a liquid form and can be semi-solidified by adding a curing agent.

In the step of adding a thickener (S300), the viscosity of the silicone oil may be increased by adding a thickener to the silicone oil mixed with the curing agent. In one embodiment, by adding 3 to 7 parts by weight of a thickener to 100 parts by weight of the silicone oil, the viscosity of the silicone oil is increased, thereby increasing the adhesion of the expanded thermoplastic microspheres, thereby increasing the dispersion rate during stirring. Preferably, 5 parts by weight of a thickener may be added based on 100 parts by weight of the silicone oil.

5A-5B are SEM diagrams showing states before and after the thickener addition process in FIG. 4, FIG. 5A is a state before addition of a thickener, and FIG. 5B is a state after addition of a thickener.

As shown in FIGS. 5A and 5B, when a thickener is added to the silicone oil, the viscosity of the silicone oil increases compared to before the addition. Accordingly, the expanded thermoplastic microspheres come into contact with the silicone oil to increase cohesion.

Returning to FIG. 4 again, in the manufacturing completion step (S400), a flame retardant and a release agent are added to the silicone oil to which the thickener is added to complete the manufacture of a plaster-type insulation composition that is easily detachable to devices having an atypical shape. have. In one embodiment, 10 to 15 parts by weight of a flame retardant and 1 to 5 parts by weight of a release agent are added, respectively, and sufficiently stirred at 250 to 350 RPM for 25 to 35 minutes. Preferably, with respect to 100 parts by weight of the silicone oil, 12 parts by weight of a flame retardant and 3 parts by weight of a release agent are mixed and stirred at 300 RPM for 30 minutes. Here, the flame retardant may be melamine powder.

Melamine-based flame retardants are less toxic and easier to handle than halogen-based. In particular, there is no generation of toxic gas during thermal decomposition, less smoke than other flame retardants, excellent thermal stability, non-toxic during use or in fire, easy handling and processing, and thermally and chemically stable. Thus, the melanin powder provides flame retardancy to the product so that when the product comes into contact with a fire, the flame gradually extinguishes and does not burn.

The agitated silicone oil mixture having expanded thermoplastic microspheres can be poured into a certain Teflon frame (or a ceramic or iron plate that withstands heat) and heat treated by placing the frame in an electric furnace or hot press at 100 to 120 degrees Celsius. At this time, if the entire liquid plaster contained in the mold is kept for about 20 to 30 minutes under heat, the silicone oil causes a curing reaction and the liquid silicone oil becomes semi-solid. Here, the semi-solidified silicone oil can be used at a high temperature, and includes a hollow foam to improve thermal insulation, and includes a flame retardant to improve flame retardancy. The insulating composition in a semi-solid state can be separated from the Teflon frame, cut as needed, and insulated in a form that completely surrounds itself to fit the shape of the device.

The results of measuring the density and thermal conductivity according to the mixing ratio of the insulation composition prepared according to an embodiment of the present invention are shown in Table 1 below.

Item Example 1 Example 2 Example 3 Example 4 Density (㎏/㎡) 141 ㎏/㎡ 133 ㎏/㎡ 136 ㎏/㎡ 129 ㎏/㎡ Silicone oil 44.3 Wt% 45 Wt% 45.2 Wt% 46 Wt% Expanded thermoplastic microspheres 0.4 Wt% 0.5 Wt% 0.5 Wt% 0.4 Wt% Hardener 44.3 Wt% 45 Wt% 45.2 Wt% 46 Wt% Thickener 2.2 Wt% 2.3 Wt% 2.3 Wt% 2.2 Wt% Flame retardant 6.6 Wt% 5.8 Wt% 5.4 Wt% 4.6 Wt% Release agent 2.2 Wt% 1.4 Wt% 1.4 Wt% 0.8 Wt% Thermal conductivity (W/m·K) 0.040 W/mK 0.040 W/mK 0.038 W/mK 0.040 W/mK

In general, the insulating material composed of expandable microspheres based on silicone oil has a thermal conductivity of 0.07 W/m·K or more, but is constructed by improving the dispersion ratio of physically and chemically expandable microspheres in silicone oil according to an embodiment of the present invention. As shown in Table 1 above, the thermal insulation material can have a thermal conductivity lowered to 0.04 W/m·K or less, and can reduce its thickness by 40% or more compared to the existing insulation material, so that it is excellent in workability and space utilization can be maximized.

6A-6B are actual photographs showing an insulating material composition having expanded thermoplastic microspheres manufactured through the manufacturing process in FIG. 4, FIG. 6A is a form of a manufactured insulating material, and FIG. 6B is a view of the insulating material product of FIG. 6A. It is a construction form.

After cutting the insulation product in the shape as shown in FIG. 6A to fit the construction surface, it can be installed by attaching it to the surface as shown in FIG. 6B.

The insulating material composition having expanded thermoplastic microspheres according to an embodiment is a material that can be used at high temperatures and forms a structure of an insulating material with improved heat resistance.

Plaster-type insulation composition having expanded thermoplastic microspheres according to an embodiment may be prepared based on silicone oil, and may have a porous structure including a hollow foam.

The heat insulating material composition having expanded thermoplastic microspheres according to an embodiment may include a porous structure to improve heat insulation. For example, it may have a Mooney viscosity ML(1+4) of 5 to 20 MU at 23 degrees Celsius.

The insulating composition having expanded thermoplastic microspheres according to an embodiment has a semi-solid form by controlling the degree of curing, so that it can be installed in a detachable form such as a complicated pipe or a device having a sophisticated shape such as a valve handle. Heat loss can be minimized by reducing the space between the and the insulated material.

In general, industrial insulation materials can be classified into organic and inorganic materials, and organic materials may include cork, cotton, felt, carbonized cork, foam rubber, and the like. Inorganic substances include glass fiber, mineral wool, glass wool, E-glass, asbestos, glass wool, quartz wool, diatomaceous earth, magnesium carbonate powder, magnesia powder, calcium silicate, and pearlite. These industrial insulation materials are manufactured in a solid form with a shape, and are manufactured in various forms such as fibers, pipes, and plates depending on the use and environment, and are applied to each site.

The solid industrial insulation is practically impossible to install on a complicated pipe or a device having a sophisticated shape such as a valve handle.

On the other hand, the heat insulating material composition having expandable microspheres according to an embodiment can be used as an industrial heat insulating material in the form of a hollow foam, and is manufactured in a semi-solid form so as to be attached to and detached from a device having a sophisticated shape such as a complicated pipe or a valve handle. It can be constructed with

In the heat insulating material composition having expandable microspheres of the present invention and a method of manufacturing the same, expanded thermoplastic microspheres having a light mass are injected from the lower side of a pressure stirrer to be directly dispersed in the silicone oil, and pressure is applied to the pressure stirrer to float in the air. By sending the expanded thermoplastic microspheres down to contact with silicone oil, the dispersion rate is physically improved, and the viscosity of the silicone oil is increased by adding a thickener to increase the adhesion to the expanded thermoplastic microspheres to chemically improve the dispersion rate. It is possible to prepare a heat insulating material composition with lowered thermal conductivity. Therefore, by using silicone oil in which expanded thermoplastic microspheres are evenly dispersed, the density and thermal conductivity of the insulation product can be lowered, thereby improving insulation and workability.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You will understand that you can do it.

Claims (6)

For a mixture in which 1 part by weight of expanded thermoplastic microspheres are inserted into 100 parts by weight of silicone oil, 100 parts by weight of a hardener as an additive, 3 to 7 parts by weight of a thickener, 10 to 15 parts by weight of a flame retardant, 1 to 1 part by weight of a release agent Insulation composition having expandable microspheres comprising 5 parts by weight.
(a) inserting the expanded thermoplastic microspheres into the silicone oil and stirring so as to be evenly dispersed;
(b) mixing the expanded thermoplastic microspheres and the stirred silicone oil with a curing agent in a ratio of 1:1 and stirring;
(c) increasing the viscosity of the silicone oil by adding a thickener to the curing agent and the stirred silicone oil; And
(D) a method of manufacturing an insulating material composition having expandable microspheres, comprising the step of preparing an insulating material composition in the form of a plaster that is easily detachable by adding a flame retardant and a release agent to the silicone oil to which the thickener is added.
The method of claim 2, wherein step (a)
1 part by weight of thermoplastic microspheres expanded from the lower side of the pressure stirrer are added to the inside of the pressure stirrer with respect to 100 parts by weight of silicone oil, and are directly dispersed in the silicone oil, and the pressure of the pressure stirrer is given in 2 to 3 atm. Expansion characterized by increasing the dispersion rate of the expanded thermoplastic microspheres inserted into the silicone oil by sedimenting the expanded thermoplastic microspheres floating in the air down to contact the silicone oil and stirring at 200 to 300 RPM for 20 minutes Method for producing a heat insulating material composition with possible microspheres.
The method of claim 2, wherein step (b) is
A method for producing an insulating material composition having expandable microspheres, characterized in that 100 parts by weight of a curing agent is mixed with the expanded thermoplastic microspheres and 100 parts by weight of the agitated silicone oil, and stirred at 300 to 400 RPM for 15 to 25 minutes.
The method of claim 2, wherein step (c) is
Expansion characterized in that by adding 5 parts by weight of a thickener to 100 parts by weight of the silicone oil stirred with the curing agent to increase the viscosity of the silicone oil to increase cohesion with the expanded thermoplastic microspheres and to increase the dispersion rate during stirring Method for producing an insulating composition with possible microspheres.
The method of claim 2, wherein step (d) is
10 to 15 parts by weight of a flame retardant and 1 to 5 parts by weight of a releasing agent are added to the silicone oil to which the thickener is added, and agitated at 250 to 350 RPM for 25 to 35 minutes.

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