High-efficiency thermal insulation glass wool product and method for manufacturing the same

Abstract

The application discloses a kind of high-efficiency heat-insulating glass wool products and preparation method thereof, the glass wool includes multiple glass fibers, the surface of the glass fiber is infiltrated with composite heat-insulating coating, the interstitial filling of the glass fiber is filled with composite heat-insulating filler;The component of the composite heat-insulating coating includes epoxy resin 30-50 parts by weight, hydroxyl acrylic resin 10-15 parts, silicone resin 10-15 parts, high-chlorinated polyethylene 5-10 parts and auxiliary agent 3-5 parts;The composite heat-insulating filler includes hollow glass microbeads, hollow ceramic microbeads, functional filler filled in micropore of hollow glass microbeads and hollow ceramic microbeads and filler adhesive component, the advantage of the application is that the composite heat-insulating coating and the composite heat-insulating filler are supplemented for traditional glass wool, on the one hand, the heat-insulating performance of the overall glass wool is greatly improved, on the other hand, the structural strength of the overall glass wool is also effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a glass wool, in particular, is a kind of high-efficiency thermal insulation glass wool product and its preparation method. BACKGROUND

[0002] Glass wool belongs to a category of glass fibers, which is a kind of inorganic fiber. Glass wool is a kind of inorganic fiber formed by fiberizing molten glass into cotton-like material. It has good formability, small bulk density, low thermal conductivity, good thermal insulation, good sound absorption performance, corrosion resistance and stable chemical properties.

[0003] The glass wool on the market is divided into two types: white formaldehyde-free glass wool and yellow phenolic resin glass wool. The white formaldehyde-free glass wool mainly uses waste glass as raw material, which is melted, centrifuged, and blown into cotton, and then an acrylic resin without formaldehyde is used as a binder to make a glass wool board. Other glass wool on the market uses phenolic resin as a binder, which is yellow in color and contains formaldehyde, which is an environmentally unfriendly glass wool product.

[0004] The improvement of energy-saving standards has led to the fact that the existing glass wool with a thickness of 2 cm on the market cannot meet the requirements. Most glass wool enterprises have increased the thickness of glass wool at the expense of the effective volume of the building, which will inevitably require substantial adjustments to the production and installation system, consume a large amount of manpower, material resources and financial resources, and also contradict the long-term planning and development of national building energy conservation, which is not conducive to the sustainable development of society. In addition, there is currently no suitable material for insulation in narrow spaces and complex piping. Therefore, there is still a demand for high-efficiency thermal insulation glass wool products with low thermal conductivity. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art and provide a high-efficiency thermal insulation glass wool product and its preparation method.

[0006] Technical solution: The high-efficiency thermal insulation glass wool product comprises a plurality of glass fibers, the surface of the glass fibers is infiltrated with a composite thermal insulation coating, and the space between the glass fibers is filled with a composite thermal insulation filler.

[0007] The composite thermal insulation coating comprises, by weight fraction, 30-50 parts of epoxy resin, 10-15 parts of hydroxy acrylic resin, 10-15 parts of silicone resin, 5-10 parts of high-chlorinated polyethylene, and 3-5 parts of auxiliary agent.

[0008] The composite thermal insulation filler comprises hollow glass microbeads, hollow ceramic microbeads, functional fillers filled in the micropores of the hollow glass microbeads and the hollow ceramic microbeads, and a filler adhesive component.

[0009] As preferred, the adjuvant includes a cross-linking agent including hydroxyethyl acrylate and a stabilizer including calcium stearate.

[0010] As preferred, the functional filler includes a combination of one or more of titanium dioxide, zirconium oxide, aluminum trioxide and silicon carbide.

[0011] As preferred, the filler binder includes a silicone adhesive.

[0012] A method for preparing a high-efficiency thermal insulation glass wool product, comprising the following steps:

[0013] S1, first prepare a composite thermal insulation coating, dissolve silicone resin with low alcohol to prepare a gel-sol solution system of silicone resin, then heat the epoxy resin, hydroxy acrylate resin and high-chlorinated polyethylene to a molten state respectively;

[0014] S2, keep the temperature at 125℃, mix the molten state of epoxy resin, hydroxy acrylate resin and high-chlorinated polyethylene uniformly, then mix the adjuvant and the gel-sol solution system of silicone resin, continuously heat and mix to prepare a mixture of the composite thermal insulation coating in a solution state, continuously inject gas into the mixture while heating and mixing, and generate a large number of dense bubbles in the mixture;

[0015] S3, prepare a composite thermal insulation filler, put the hollow glass beads and hollow ceramic beads into the container of the oscillator, then pour the functional filler, continuously oscillate until the functional filler fills the micropores of the hollow glass beads and hollow ceramic beads, then pour the filler binder component into the container of the oscillator, and continue to oscillate until the filler binder component fully wraps the outer surface of the hollow glass beads and hollow ceramic beads;

[0016] S4, fully immerse and adhere the mixture of the composite thermal insulation coating to the glass fiber, then take it out, then use high-temperature high-speed hot air at 150℃ to blow the taken-out glass fiber, blow off the excess mixture of the composite thermal insulation coating on the surface of the glass fiber, and leave a thin layer of the composite thermal insulation coating on the surface of the glass fiber;

[0017] S5, lay the coated glass fiber in the mold for multiple times, each time lay 1-2mm thick glass fiber, then lay the composite thermal insulation filler on the single layer of glass fiber, then continue to lay the glass fiber on the composite thermal insulation filler, repeat the operation, lay multiple layers of glass fiber and multiple layers of composite thermal insulation filler, and prepare a crude glass wool;

[0018] S6, place the crude glass wool on the turnover oscillation table, fix it stably, then perform a full oscillation operation to make the composite thermal insulation filler fully dispersed in the glass wool, then perform a compression operation, and complete the preparation of the high-efficiency thermal insulation glass wool product.

[0019] Compared with the prior art, the present application has the following beneficial effects: the composite thermal insulation coating and the composite thermal insulation filler are supplemented to the traditional glass wool, which greatly improves the thermal insulation performance of the whole glass wool and effectively improves the structural strength of the whole glass wool. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0021] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, can be integrated; can be mechanical connection, can be electrical connection, can be communication connection; can be direct connection, can be indirect connection through an intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0022] The technical solutions of the present application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments.

[0023] A high-efficiency thermal insulation glass wool product, the glass wool comprises a plurality of glass fibers, the surface of the glass fibers is infiltrated with a composite thermal insulation coating, and the space between the glass fibers is filled with a composite thermal insulation filler; the composite thermal insulation coating comprises, by weight fraction, 30-50 parts of epoxy resin, 10-15 parts of hydroxyl acrylic resin, 10-15 parts of silicone resin, 5-10 parts of high-chlorinated polyethylene, and 3-5 parts of auxiliary agent; the composite thermal insulation filler comprises hollow glass microbeads, hollow ceramic microbeads, functional fillers filled in the micropores of the hollow glass microbeads and the hollow ceramic microbeads, and a filler adhesive component.

[0024] The composite thermal insulation coating is used to wrap the glass fibers, which can fill the gaps between adjacent glass fibers and improve the adhesion between the glass fibers. The epoxy resin is used as the base component of the composite thermal insulation coating, which is combined with hydroxy acrylic resin, silicone resin and high-chlorinated polyethylene. Compared with single epoxy resin, the combination has better elasticity and interface fusion ability. The composite thermal insulation filler based on hollow glass microbeads and hollow ceramic microbeads is filled in the macropores, which is combined with functional fillers to provide diversified functions for the whole and further improve the thermal insulation performance. In summary, the composite thermal insulation coating and the composite thermal insulation filler are added to the traditional glass wool, which greatly improves the thermal insulation performance of the whole glass wool and effectively improves the structural strength of the whole glass wool.

[0025] The additives include cross-linking agents and stabilizers. The cross-linking agents include hydroxyethyl acrylate, and the stabilizers include calcium stearate. The hydroxyethyl acrylate can be used as a fiber treatment agent, a thermosetting coating and a high-bond-strength adhesive. It is the most suitable cross-linking agent for mixtures of mixed resins with thermal insulation requirements. The calcium stearate is used as a stabilizer because the composite thermal insulation coating contains high-chlorinated polyethylene. The calcium stearate is a non-toxic thermal stabilizer for polyvinyl chloride and has excellent lubricity. It has low price, low toxicity and good processing performance.

[0026] The functional fillers include a combination of one or more of titanium dioxide, zirconium oxide, aluminum oxide and silicon carbide. In specific implementation, a mixture of titanium dioxide, zirconium oxide, aluminum oxide and silicon carbide is preferably used, which has good thermal insulation, waterproof and antibacterial properties.

[0027] The filler adhesive includes silicone adhesive. The silicone adhesive can fully cooperate with the silicone resin in the composite thermal insulation coating, has good interface fusion with the composite thermal insulation coating, and improves the adhesion effect of the composite thermal insulation filler and the composite thermal insulation coating wrapped on the surface of the glass fiber.

[0028] Embodiment: A preparation method of a high-efficiency thermal insulation glass wool product, including the following steps:

[0029] S1, first, prepare a composite thermal insulation coating. Dissolve the silicone resin in a low-alcohol solution to prepare a silicone resin of a sol-gel solution system. Then heat the epoxy resin, hydroxy acrylic resin and high-chlorinated polyethylene to a molten state, respectively.

[0030] S2, keep the temperature at 125℃, mix the molten epoxy resin, hydroxy acrylic resin and high-chlorinated polyethylene uniformly, then mix the additives and the silicone resin of the sol-gel solution system, continuously heat and mix to prepare a mixture of the composite thermal insulation coating in a solution state. While heating and mixing, continuously inject gas into the mixture to generate a large number of dense bubbles in the mixture.

[0031] S3, preparing the composite thermal insulation filler, putting the hollow glass beads and hollow ceramic beads into the container of the oscillator, then pouring the functional filler, continuously oscillating until the functional filler fills into the micropores of the hollow glass beads and hollow ceramic beads, then pouring the filler adhesive component into the container of the oscillator, continuing to oscillate until the filler adhesive component is fully wrapped on the outer surface of the hollow glass beads and hollow ceramic beads;

[0032] S4, the glass fibers are fully immersed and adhered to the mixture of the composite thermal insulation coating, then fished out, then the fished-out glass fibers are subjected to air blowing operation at a high temperature of 150 DEG C and a high speed, and the mixture of the composite thermal insulation coating on the surface of the glass fibers is blown away, so that a thin layer of the composite thermal insulation coating is left on the surface of the glass fibers;

[0033] S5, the coated glass fibers are laid in the mold for multiple times, each time laying 1-2 mm thick glass fibers, then laying the composite thermal insulation filler on the single layer of glass fibers, then continuing to lay the glass fibers on the composite thermal insulation filler, repeating the operation, laying multiple layers of glass fibers and multiple layers of composite thermal insulation filler, and preparing the crude glass wool;

[0034] S6, placing the crude glass wool on the turnover oscillation table, stably fixing and then fully oscillating to make the composite thermal insulation filler fully dispersed in the glass wool, then compacting to complete the preparation of the high-efficiency thermal insulation glass wool product.

[0035] Comparative Example 1: using traditional single-component thermal insulation glass wool.

[0036] Comparative Example 2: a method for preparing thermal insulation glass wool, comprising the following steps:

[0037] S1, the glass fibers are laid in the mold for multiple times, each time laying 1-2 mm thick glass fibers, then laying the porous thermal insulation filler on the single layer of glass fibers, then continuing to lay the glass fibers on the porous thermal insulation filler, repeating the operation, laying multiple layers of glass fibers and multiple layers of porous thermal insulation filler, and preparing the crude glass wool;

[0038] S2, placing the crude glass wool on the turnover oscillation table, stably fixing and then fully oscillating to make the porous thermal insulation filler fully dispersed in the glass wool, then compacting to complete the preparation of the thermal insulation glass wool.

[0039] The same size and thickness of the glass wool products prepared by the examples, comparative example 1 and comparative example 2 are used to wrap a solid iron ball with a diameter of 20 cm and heated to 150 DEG C, and at the same time, placed in a fume hood with the same wind speed at room temperature, and the temperature of the three solid iron balls is tested after standing for 4 h, and the measured data is as follows:

[0040] Temperature of solid iron ball after 4h (°C) Examples 137 Comparative Example 1 98 Comparative Example 2 Comparative Example 3 112

[0041] Therefore, the heat insulation capacity of the high-efficiency heat insulation glass wool product prepared by using the technical scheme of the embodiment is obviously superior to that of Comparative Examples 1 and 2.

[0042] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first feature and the second feature, or indirect contact between the first feature and the second feature through an intermediate medium. Moreover, the first feature can be directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The first feature can be directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height. In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0043] Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-efficiency, insulating glass wool product, characterized in that: The glass wool comprises a plurality of glass fibers, the glass fibers are infiltrated with a composite thermal insulation coating, and the glass fibers are filled with a composite thermal insulation filler; The composite thermal insulation coating comprises, in parts by weight, 30-50 parts of epoxy resin, 10-15 parts of hydroxyl acrylic resin, 10-15 parts of silicone resin, 5-10 parts of high-chlorinated polyethylene, and 3-5 parts of auxiliary agent; The composite thermal insulation filler comprises hollow glass beads, hollow ceramic beads, functional fillers filled in micropores of the hollow glass beads and the hollow ceramic beads, and a filler adhesive component; The preparation method of the high-efficiency thermal insulation glass wool product comprises the following steps: S1, first, a composite thermal insulation coating is prepared, an organic silicon resin is dissolved in a low-grade alcohol to prepare a sol-gel solution system of the organic silicon resin, and then the epoxy resin, the hydroxyl acrylic resin, and the high-chlorinated polyethylene are heated to a molten state respectively; S2, the temperature is kept at 125°C, the molten epoxy resin, the molten hydroxyl acrylic resin, and the molten high-chlorinated polyethylene are stirred and mixed uniformly, then the auxiliary agent and the sol-gel solution system of the organic silicon resin are stirred and mixed, a mixture of the composite thermal insulation coating in a solution state is prepared by continuously heating and stirring, and while the mixture is continuously heated and stirred, gas is continuously injected into the mixture to generate a large number of dense bubbles in the mixture; S3, a composite thermal insulation filler is prepared, the hollow glass beads and the hollow ceramic beads are put into a container of a shaker, then the functional fillers are poured into the container, the functional fillers are continuously vibrated until the functional fillers are filled into micropores of the hollow glass beads and the hollow ceramic beads, then the filler adhesive component is poured into the container of the shaker, and the filler adhesive component is continuously vibrated until the filler adhesive component is fully wrapped on outer surfaces of the hollow glass beads and the hollow ceramic beads; S4, the glass fibers are fully immersed in and adhered to the mixture of the composite thermal insulation coating, then the glass fibers are fished out, and then high-temperature high-speed hot air at 150°C is used to blow the fished-out glass fibers to blow off the mixture of the composite thermal insulation coating on the surface of the glass fibers and leave a thin layer of the composite thermal insulation coating on the surface of the glass fibers; S5, the glass fibers coated are laid in a mold for multiple times, 1-2 mm-thick glass fibers are laid each time, then the composite thermal insulation filler is laid on the single layer of the glass fibers, then the glass fibers are continuously laid on the composite thermal insulation filler, the operation is repeated, and multiple layers of the glass fibers and multiple layers of the composite thermal insulation filler are laid to prepare a crude glass wool; S6, the crude glass wool is placed on a turnover shaker table, is stably fixed, and is fully vibrated to make the composite thermal insulation filler fully dispersed in the glass wool, and then the crude glass wool is compressed to complete the preparation of the high-efficiency thermal insulation glass wool product.

2. A high efficiency insulating glass wool product according to claim 1, characterised in that: The auxiliary agent comprises a crosslinking agent and a stabilizer, the crosslinking agent comprises hydroxyethyl acrylate, and the stabilizer comprises calcium stearate.

3. A high efficiency insulating glass wool product according to claim 1, characterised in that: The functional fillers comprise a combination of one or more of titanium dioxide, zirconium oxide, aluminum oxide, and silicon carbide.

4. A high efficiency insulating glass wool product according to claim 1, characterised in that: The filler adhesive comprises an organic silicon adhesive.