CN108679370B - Glass fiber insulation felt and preparation method thereof - Google Patents
Glass fiber insulation felt and preparation method thereof Download PDFInfo
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- CN108679370B CN108679370B CN201810948698.8A CN201810948698A CN108679370B CN 108679370 B CN108679370 B CN 108679370B CN 201810948698 A CN201810948698 A CN 201810948698A CN 108679370 B CN108679370 B CN 108679370B
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- fiber
- felt
- glass fiber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
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Abstract
The invention provides a glass fiber insulation felt, which is formed by laminating at least 10 layers of fiber mats, wherein the thickness of each layer of fiber mat is 0.1-1mm, and the grid of the fiber mat is 1-200 mu m. Can completely meet the requirement of the non-combustible A1 grade, and is the preferred material for heat preservation, heat insulation and fire prevention. Meanwhile, the material has the characteristics of softness, foldability, cladding, easiness in construction and the like.
Description
Technical Field
The invention belongs to the technical field of heat preservation materials, and particularly relates to a glass fiber heat preservation felt.
Background
The heat-insulating and energy-saving materials used in the industry and the building at home and abroad mainly comprise: (1) rock wool, glass wool, high performance fibers and products thereof, (2) aerogel and products thereof, (3) organic foam-based insulation materials and products thereof, (4) hard-based insulation materials and products thereof, and (5) asbestos-based insulation materials and products thereof.
The above various heat insulating materials have defects:
(1) rock mineral wool presents a number of problems during application: if the strength is insufficient, the material sags, is damaged and is invalid due to self gravity in the use process; the skin is too irritated, so that workers do not want to construct; the toughness and resilience of the material are insufficient, fibers are broken after compression or kneading, dust flies upward, the effective heat preservation thickness cannot be ensured, and the due effect cannot be achieved; the temperature resistance is insufficient, and when the glass wool is used at the temperature of more than 200 ℃, the rock mineral wool and the common glass wool are easy to age and become brittle and are seriously damaged.
(2) Only silica aerogel in aerogel and products thereof realizes large-scale production and is popularized, and other types of aerogel are only produced on a small scale or are used for specific purposes. Because of the high price, the popularization is difficult, and the share of the total market scale in the heat-insulating and energy-saving material market is small.
(3) The hard heat-insulating products are used in specific occasions (such as foam concrete blocks and the like), and are fragile, cannot be subjected to surface coating construction, have small market scale and are slow in market development.
(4) Asbestos-based heat insulating energy saving materials and products thereof are suspected carcinogens and are classified as forbidden substances by many countries and regions in the world.
Therefore, there is an increasing demand for high-performance heat-insulating energy-saving materials in the market.
Disclosure of Invention
In order to solve the technical problems, the invention provides the glass fiber heat-insulating felt which can completely meet the requirement of non-combustible A1 grade and is a preferred material for heat insulation, heat insulation and fire prevention. Meanwhile, the material has the characteristics of softness, foldability, cladding, easiness in construction and the like.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the glass fiber heat insulating felt is formed by laminating at least 10 layers of fiber mats, wherein the thickness of each layer of fiber mat is 0.1-1mm, and the grid of the fiber mat is 1-200 mu m.
The fibers in the fiber mat of the invention comprise glass fibers and basalt fibers.
The superfine glass fiber is an inorganic fiber and has the advantages of small volume density, heat conductivity , heat preservation, heat insulation, good sound absorption performance, corrosion resistance, stable chemical performance and the like.
The basalt fiber is continuous fiber produced by adding natural basalt ore crushed into a certain particle size into a special melting furnace, melting at high temperature and then producing through a bushing. The basalt fiber raw material is purely natural, has no fluorine-containing raw material with high harmfulness and boron raw material with easy volatility, has no harmful gas in the production process, has no toxic substances such as industrial garbage and the like, is a real environment-friendly high-performance fiber, has excellent tensile strength, acid and alkali corrosion resistance, heat preservation, weather resistance and fire resistance, and is an ideal novel environment-friendly fireproof heat preservation material.
Preferably, the raw materials consist of, by mass:
superfine glass fiber: 40-90%
Basalt fiber: 10-60%
Auxiliary materials: 0-15%.
The auxiliary material provided by the invention comprises silicon oxide powder, aluminum oxide powder, silicon carbide fiber and carbon fiber, so that a synergistic effect is generated, and the heat conductivity coefficient of the material can be further reduced.
Further preferably, the raw material composition is 50-80% of ultrafine glass fibers and 20-50% of basalt fibers.
According to the invention, a small amount of basalt fibers are matched with ultrafine glass fibers, so that the fiber dispersion is better, and the material thermal conductivity is high and can reach a thermal conductivity lower than 0.03.
Further preferably, the fineness of the superfine glass fiber is 3-9 μm, and the fineness of the basalt fiber is 5-13m.
Further preferably, the ultra fine glass fiber is composed of two kinds of fibers having fineness of 3 to 5 μm and fineness of 7 to 9 μm.
The fibers of the single-layer fiber mat are arranged in a disordered way in a two-dimensional space, and through reasonable matching of length and thickness, pores among the fibers are blocked, so that the resistance of gas passing is very high, and the heat conductivity coefficient of the material is reduced.
Further preferably, the length of the filaments is 50-100mm. The material has good mechanical property and is not easy to be broken.
The fiber filaments are intertwined together to form a three-dimensional crossed state, so that a plurality of tiny pores are formed in the fiber mat to isolate air into small single cells, the air and the glass have low heat conductivity, and the multi-layer three-dimensional crossed fiber filaments limit the rapid flow and diffusion of the air, namely reduce the heat convection of the air, so that the fiber mat has good heat insulation performance.
The density of the fiber mat is 20-200 g/square meter, and the fiber mat is dense and airtight.
The invention also provides a preparation method of the glass fiber insulation felt, which comprises the following steps:
A. weighing raw materials in a formula proportion, and uniformly mixing;
B. arranging the raw materials into a thin felt through carding directional arranging equipment;
C. extruding the thin felt into a fiber thin felt with the thickness of 0.1-1 mm;
D. and (3) laying the fiber mats layer by layer to form fiber mats, compressing to 3-30mm, and needling to obtain a finished product.
Preferably, the fibrous raw materials are all subjected to a cleaning pretreatment. Reducing the content of chlorofluoro ions in the finished product.
The invention has the beneficial effects that:
1. the invention adopts high-quality high-performance glass fiber and basalt fiber which are rich in alumina, magnesia, silica and the like and meet the requirements of environmental protection and human health, and the product can completely meet the requirements of non-combustible A1 grade, thus being the preferred material for heat preservation, heat insulation and fire prevention. Meanwhile, the novel plastic bag has the characteristics of softness, foldability, cladding, easiness in construction and the like. The prepared grey rolled felt material thoroughly solves various problems faced by the current heat insulation materials. The device comprises:
(1) good flexibility and rebound resilience, difficult fracture, durability and repeated use.
(2) High temperature resistance and meets the requirement of non-inflammable A1 grade.
(3) The radiation resistance test is passed, and the radiation resistance test can be used in the nuclear power field.
(4) The environment-friendly paint does not contain illicit substances such as asbestos, heavy metals, harmful gases and the like, passes the ROHS test and the VOC test, and has no harm to the environment, animals and plants.
(5) The use is safe, the fiber length is 30-100 mm, and no fine dust is generated in the use process.
(6) The product has extremely low chlorofluoroion content and no corrosiveness to metal equipment and pipelines; the heat preservation effect and the performance of the heat preservation material are not affected after the heat preservation material is soaked in boiling water for 96 hours; can withstand continuous vibration to maintain various performance indexes of the material, and ensure that the heat preservation effect of the material is unchanged for a long time.
2. The fiber mat is formed by laminating layers of fiber mats, the size of the grid is strictly controlled, the grid is small, air is not easy to pass through, the heat conductivity coefficient is small, and the heat insulation effect of the material is good.
3. Two kinds of fibers with fineness of 3-5 mu m and fineness of 7-9 mu m are adopted, through reasonable matching of length and thickness, pores among the fibers are blocked, the resistance of gas passing is very large, and the heat conductivity coefficient of the material is reduced. The filler in the gaps of the fiber mat adopts finer fibers, the powder is better than powder filling, the powder is easy to be separated out from the material, and the fine fibers are stably in the material and cannot be separated out.
4. The length of the fiber filaments is controlled to be 50-100mm, and the fiber filaments are mutually intertwined to form a three-dimensional crossed state, so that a plurality of tiny pores are formed in the fiber mat to isolate air into small single cells, the air and the glass have low heat conductivity, and the multi-layer three-dimensional staggered fiber filaments limit the rapid flow and diffusion of the air, namely reduce the heat convection of the air, so that the fiber mat has good heat insulation performance.
5. The existing heat preservation felt mostly adopts adhesives, the use of the adhesives can reduce the heat preservation effect of materials and the fireproof performance of the materials, and the existing adhesives all use phenolic resin, so formaldehyde is released, and the heat preservation felt is unhealthy and environment-friendly. The invention adopts superfine glass fiber, and the fiber insulation felt after compression does not contain adhesive, thereby overcoming the defects.
6. The preparation method of the invention comprises the steps of firstly directionally arranging fibers into a thin felt, then extruding the thin felt into a fiber thin felt with the thickness of 0.1-1mm, layering the layers into a fiber felt, and then compressing and needling the fiber felt to obtain a finished product. In the second compression process, the fine fibers can automatically plug the pores, so that the fiber mat is dense and airtight, gas is difficult to pass through, and the heat conduction system of the material is as low as 0.02.
Detailed Description
The invention will be further described by the following examples for the purpose of more clearly and specifically describing the object of the invention. The following examples are only for specific illustration of the implementation method of the present invention and do not limit the protection scope of the present invention.
Example 1
A glass fiber insulation felt is formed by laminating 10 layers of fiber mats, wherein the thickness of each layer of fiber mat is 0.3mm, and the grid of the fiber mat is 120 mu m.
Example 2
A glass fiber insulation felt is formed by overlapping 50 layers of fiber mats, wherein the thickness of each layer of fiber mat is 0.1mm, and the grid of the fiber mat is 1 mu m.
The fiber mat density was 200 grams per square meter.
Example 3
A glass fiber insulation felt is formed by laminating 80 layers of fiber mats, wherein the thickness of each layer of fiber mat is 1mm, and the grids of the fiber mat are 200 mu m.
The fiber mat density was 1 gram per square meter.
Example 4
A glass fiber insulation felt is formed by laminating 100 layers of fiber mats, wherein the thickness of each layer of fiber mat is 0.5mm, and the grid of the fiber mat is 100 mu m.
The fiber mat density was 100 grams per square meter.
Example 5
The glass fiber insulation felt comprises the following raw materials in mass:
superfine glass fiber: 75 percent of
Basalt fiber: 10 percent of
Auxiliary materials: 15%.
Example 6
The glass fiber insulation felt comprises the following raw materials in mass:
superfine glass fiber: 55%
Basalt fiber: 40 percent of
Auxiliary materials: 5%.
The auxiliary materials comprise silicon oxide powder, aluminum oxide powder, silicon carbide fiber and carbon fiber.
Example 7
The glass fiber insulation felt comprises the following raw materials in mass:
superfine glass fiber: 40 percent of
Basalt fiber: 60 percent of
The auxiliary materials comprise silicon oxide powder, aluminum oxide powder, silicon carbide fiber and carbon fiber.
The fineness of the superfine glass fiber is 3-9 mu m, and the fineness of the basalt fiber is 5-13 mu m.
Example 8
The glass fiber insulation felt comprises the following raw materials in mass:
superfine glass fiber: 90 percent of
Basalt fiber: 10 percent of
The auxiliary materials comprise silicon oxide powder, aluminum oxide powder, silicon carbide fiber and carbon fiber.
The superfine glass fiber consists of two fibers with fineness of 3-5 mu m and fineness of 7-9 mu m. The fineness of basalt fiber is 5-13 mu m.
The length of the fiber is 50-100mm.
Example 9
The glass fiber insulation felt comprises the following raw materials in mass:
superfine glass fiber: 50 percent of
Basalt fiber: 50 percent of
The auxiliary materials comprise silicon oxide powder, aluminum oxide powder, silicon carbide fiber and carbon fiber.
The superfine glass fiber consists of two fibers with fineness of 3-5 mu m and fineness of 7-9 mu m. The fineness of basalt fiber is 5-13 mu m.
The length of the fiber is 50-100mm.
Example 10
The glass fiber insulation felt comprises the following raw materials in mass:
superfine glass fiber: 80 percent of
Basalt fiber: 20 percent of
The auxiliary materials comprise silicon oxide powder, aluminum oxide powder, silicon carbide fiber and carbon fiber.
The superfine glass fiber consists of two fibers with fineness of 3-5 mu m and fineness of 7-9 mu m. The fineness of basalt fiber is 5-13 mu m.
The length of the fiber is 50-100mm.
Example 11
The glass fiber insulation felt comprises the following raw materials in mass:
superfine glass fiber: 70 percent of
Basalt fiber: 30%
The auxiliary materials comprise silicon oxide powder, aluminum oxide powder, silicon carbide fiber and carbon fiber.
The superfine glass fiber consists of two fibers with fineness of 3-5 mu m and fineness of 7-9 mu m. The fineness of basalt fiber is 5-13 mu m.
The length of the fiber is 50-100mm.
Example 12
The preparation method of the glass fiber insulation felt comprises the following steps:
A. weighing raw materials in a formula proportion, and uniformly mixing;
B. arranging the raw materials into a thin felt through carding directional arranging equipment;
C. extruding the mat into a 0.1mm thick fiber mat by a pressure roller;
D. and (3) laying the fiber mats layer by layer to form fiber mats, compressing to 8mm, and needling to obtain a finished product.
Example 13
The preparation method of the glass fiber insulation felt comprises the following steps:
A. weighing raw materials in a formula proportion, and uniformly mixing;
B. arranging the raw materials into a thin felt through carding directional arranging equipment;
C. extruding the mat into a 1mm thick fiber mat by a pressure roller;
D. and (3) laying the fiber mats layer by layer to form fiber mats, compressing to 30mm, and needling to obtain a finished product.
Example 14
The preparation method of the glass fiber insulation felt comprises the following steps:
A. weighing raw materials in a formula proportion, and uniformly mixing;
B. arranging the raw materials into a thin felt through carding directional arranging equipment;
C. extruding the mat into a 0.2mm thick fiber mat by a pressure roller;
D. and (3) laying the fiber mats layer by layer to form fiber mats, compressing to 3mm, and needling to obtain a finished product.
The fiber raw materials are all subjected to cleaning pretreatment. Reducing the content of chlorofluoro ions in the finished product.
The invention adopts compression roller compression, and finally the needling shaping is carried out.
Table 1 shows the comparison of the performance test of the product of the present invention with that of the conventional thermal insulation material.
| The product of the invention | Traditional heat-insulating material | |
| Coefficient of thermal conductivity | 0.025W/(m.k) | 0.045W/(m.k) |
| Compression spring rate | 95％ | 50％ |
| Flexibility of the product | Vibration does not damage | Vibration damage |
Therefore, the heat-insulating felt has the advantages of small heat conductivity coefficient, high compression rebound rate and good flexibility, and is particularly suitable for wrapping and insulating pipelines.
The foregoing examples merely illustrate specific embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (5)
1. The glass fiber insulation felt is characterized in that: the heat-insulating felt is formed by superposing at least 10 layers of fiber thin felts, wherein the thickness of each layer of fiber thin felt is 0.1-1mm, and the grid of the fiber thin felt is 1-200 mu m;
the raw materials of the fiber mat comprise the following components:
superfine glass fiber: 40-90%
Basalt fiber: 10-60%
Auxiliary materials: 0-15%;
the fiber length is 50-100mm, the superfine glass fiber consists of two fibers with fineness of 3-5 mu m and fineness of 7-9 mu m, and the fineness of basalt fiber is 5-13 mu m; the auxiliary materials comprise silicon oxide powder, aluminum oxide powder, silicon carbide fiber and carbon fiber.
2. The glass fiber insulation mat of claim 1, wherein: the density of the fiber mat is 20-200 g/square meter.
3. The glass fiber insulation mat of claim 1, wherein: the raw materials comprise 50-80% of superfine glass fiber and 20-50% of basalt fiber.
4. The method for preparing the glass fiber insulation felt according to claim 1, wherein: the method comprises the following steps:
A. weighing raw materials in a formula proportion, and uniformly mixing;
B. arranging the raw materials into a thin felt through carding directional arranging equipment;
C. extruding the thin felt into a fiber thin felt with the thickness of 0.1-1mm by adopting a pressure roller;
D. and (3) laying the fiber mats layer by layer to form fiber mats, compressing to 3-30mm, and needling to obtain a finished product.
5. The method for preparing the glass fiber insulation felt according to claim 4, wherein: the fiber raw materials are all subjected to cleaning pretreatment.
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| CN201810948698.8A CN108679370B (en) | 2018-08-20 | 2018-08-20 | Glass fiber insulation felt and preparation method thereof |
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| CN201810948698.8A CN108679370B (en) | 2018-08-20 | 2018-08-20 | Glass fiber insulation felt and preparation method thereof |
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| CN108679370B true CN108679370B (en) | 2023-09-15 |
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| CN111534921B (en) * | 2020-05-15 | 2020-11-20 | 成都硕屋科技有限公司 | Production process of nano microporous composite material |
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