WO2017088721A1 - Procédés de fabrication pour matériau central interne utilisé pour panneau d'isolation sous vide, et panneau d'isolation sous vide - Google Patents

Procédés de fabrication pour matériau central interne utilisé pour panneau d'isolation sous vide, et panneau d'isolation sous vide Download PDF

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Publication number
WO2017088721A1
WO2017088721A1 PCT/CN2016/106701 CN2016106701W WO2017088721A1 WO 2017088721 A1 WO2017088721 A1 WO 2017088721A1 CN 2016106701 W CN2016106701 W CN 2016106701W WO 2017088721 A1 WO2017088721 A1 WO 2017088721A1
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WO
WIPO (PCT)
Prior art keywords
vacuum insulation
insulation panel
core material
inner core
manufacturing
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PCT/CN2016/106701
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English (en)
Chinese (zh)
Inventor
王振安
吴志煌
罗宇彦
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福建赛特新材股份有限公司
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Publication of WO2017088721A1 publication Critical patent/WO2017088721A1/fr

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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
    • 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
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • 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
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/07—Arrangements using an air layer or vacuum the air layer being enclosed by one or more layers of insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving

Definitions

  • the present invention relates to a method for manufacturing an inner core material and a vacuum insulation panel for use in a vacuum insulation panel.
  • the vacuum insulation board is a high-efficiency new insulation insulation material combined with the vacuum insulation principle and the traditional insulation material. It is widely used in refrigerators, incubators, building walls, refrigerated containers, etc. It consists of membrane materials, core materials, getter materials and so on.
  • the core material is mostly made of a material having a multi-void ratio, a pore connection, and a low thermal conductivity.
  • Most of the core material production adopts the wet production process, that is, the glass fiber or glass wool, flame cotton, etc. are beaten, paper-made, dried, and cut to make the core material, but the energy consumption is high, the process is complicated, and the cost is high. .
  • the invention relates to a short glass fiber adopting an improved non-woven process technology to dryly produce a vacuum insulation plate core material, and solves the problem of the wet process production of the glass fiber core material.
  • the main technical problem to be solved by the present invention is to provide a method for manufacturing an inner core material used in a vacuum insulation panel, which has an excellent internal heat insulation performance, and has a simple production process and a low cost.
  • the present invention provides a method for manufacturing an inner core material used in a vacuum insulation panel, comprising the following steps:
  • the surface extends in substantially parallel directions;
  • a step of laminating a plurality of the nonwoven fabrics is a step of laminating a plurality of the nonwoven fabrics.
  • the glass fibers have an average fiber diameter of from 6 to 15 ⁇ m and an average fiber length of from 10 to 50 mm.
  • the method of manufacturing a plurality of glass fibers and low-melting-point organic fibers by using a dry non-woven process comprises: opening and combing a plurality of glass fibers and low-melting organic fibers. Thereafter, monofilamentized glass fibers are formed; and the monofilamentized glass fibers are further formed into the nonwoven fabric in an air laid machine.
  • the opening means that a plurality of glass fibers and low melting point organic fibers are opened twice by an opener and a fine opener.
  • the carding means that a plurality of glass fibers and low melting point organic fibers which have been subjected to two opening operations are passed through a cotton carding machine and a special fiberglass carding machine.
  • the static eliminating device is mounted on the opening machine, the fine opening machine, the cotton carding machine, and the fiberglass special carding machine.
  • the step of laminating a plurality of the non-woven fabrics specifically refers to: reciprocating a plurality of the non-woven fabrics by a clamp-type laying machine, and entering the double-layer type Hot press setting furnace hot pressing setting.
  • the two-layer hot press setting furnace has a hot pressing temperature of 200 to 350 °C.
  • the plurality of nonwoven fabrics are laminated to form a glass fiber laminate, and the glass fiber laminate is compacted by hot pressing, and the fiber laminate is passed through. It is formed into a plate shape by hot pressing, and the surface is smooth and flat.
  • the plurality of nonwoven fabrics are laminated and then hot pressed without forming a laminate in a plate shape.
  • the invention also provides a method for manufacturing a vacuum insulation panel, comprising the following steps:
  • the surface extends in substantially parallel directions;
  • the invention provides a method for manufacturing an inner core material used in a vacuum insulation panel, which uses a dry non-woven process to make the glass fiber substantially completely single-fibrillated, and then the air-laid non-woven fabric is thin.
  • the grammage can be around 50-100 g/m 2 . Since the glass fiber is stretched in the carding machine, the glass fiber is straight, the glass fiber is not bent, the glass fiber is evenly distributed in the horizontal plane, and there is no through-glass fiber in the plane of the vertical nonwoven fabric, so the layer of the plurality of laminated nonwoven fabrics is laminated. A lot, glass fiber and fiberglass have only a few point contacts.
  • the non-woven fabric and the non-woven fabric are bonded by the melted organic fiber, so that the void formed by the glass fiber contact and the nonwoven fabric lamination is not filled with the adhesive, the heat conduction area is reduced, and the heat insulation performance is greatly improved.
  • Figure 1 is a flow chart showing the production of a preferred embodiment 1 of the present invention.
  • the present embodiment uses a dry non-woven process technology to produce an inner core material for use in a vacuum insulation panel, using glass fibers and a small amount of low-melting organic fibers, by opening, mixing, combing, air-laid, and gripping. Paving machine, heat setting machine, hot roll, vertical and horizontal cutting machine and other equipment to produce the inner core material used in vacuum insulation board.
  • the glass fiber and the low-melting polyester fiber are dispersed and loosened by a two-way opening machine, and a part of the glass short fiber is monofilamentized.
  • the glass fiber and the low-melting polyester fiber which have passed through two opening machines are carded by a carding machine to further monofilamentize the glass fiber and the low-melting polyester fiber, and the glass fiber and the low-melting polyester fiber are straightened, and Clean up impurities and remove very fine fibers.
  • the relative density of glass fiber is about twice that of synthetic fiber.
  • the glass fiber has a round bar shape, the surface is smooth, no curling, and the cohesion of the fiber and the fiber is small.
  • the fiber entering the carding machine has some impurities, the fiberglass ratio is large, and it is smooth and has no cohesion. Therefore, a large amount of glass fiber short wire falls into the belly of the machine, causing waste, which requires adjusting the position of the dust removing knife and installing The angle and the distance from the licker roller minimizes the amount of fiberglass that falls into the belly.
  • the size of the gauge should be adjusted to avoid excessive combing damage to the glass fiber, and breakage, resulting in a large amount of glass fiber pulverization.
  • glass fiber and low-melting polyester fiber should be rubbed with the moving machinery in the spinning equipment such as opening, carding, air-laid, etc., it is easy to accumulate electric charge on the surface of the fiber, so that the fiber and the fiber are repelled, and the fiber and the machine are The fibers are attracted to each other such that the glass fibers and the low-melting polyester fibers are agglomerated at the cylinders of the carding machine, the cages or corners of the air-laid machine. Therefore, the glass fiber and the low-melting-point polyester fiber are poorly combed, and the air-laid nonwoven fabric is poor in uniformity. In order to overcome the effects of static electricity, the following means are needed:
  • the ion wind bar and the ion tuyere can generate a large number of air masses with positive and negative charges, which are blown out by the compressed gas at high speed, and can neutralize the electric charge on the object.
  • the static electricity on the surface of the object is negative, it attracts.
  • Positive charge in the airflow which attracts negative airflow when the surface of the object is positively charged
  • the electric charge so that the static electricity on the surface of the object is neutralized, so as to eliminate the static electricity on the surface of the fiber;
  • Humidifier is used in the production workshop to maintain the humidity of the production workshop at 60-75%.
  • the air-laid glass fiber and a small amount of low-melting organic synthetic fiber mixed non-woven fabric have a weight of 50-100 g/m 2 , and the nonwoven fabric is laminated by a clamp cross-lapper (ie, a single-layer non-woven fabric net) The layer was folded back and forth at 90 degrees to form a glass fiber laminate having a basis weight of 500 to 5000 g/m 2 .
  • the glass fiber laminate core material has a basis weight of about 2500 g/m 2 , and the cross-lapper is used to laminate 32 to 50 layers of the nonwoven fabric. If it is necessary to make a vacuum insulation panel of the remaining thickness, the number of layers of the nonwoven fabric laminate may be adjusted as needed.
  • the double-layer hot press setting machine consists of three sections: two sections with natural gas heating device, length 6 meters, control temperature 200-250 ° C and A section of cooling zone with a chiller, 3 meters long.
  • the heating temperature control is for the low melting point polyester fiber to melt and bond the glass fiber to form a core material with better strength.
  • the glass fiber laminate from the hot press setting machine enters a pair of hot roll rolls, and the hot roll is heated by electric heating or heating oil to 200-250 ° C to compact the surface of the glass fiber laminate, and the surface is smooth and flat.
  • the glass fiber laminate passing through the hot roll has a density of 40-120 KG/m 3 , enters slitting, and is cross-cut to obtain a desired core material size.
  • the inner core material used in the vacuum insulation panel can be made by laminating a plurality of non-woven fabrics;
  • the non-woven fabric is a dry non-woven process for a plurality of glass fibers and low-melting organic fibers. manufacturing;
  • most of the plurality of glass fibers extend in a direction substantially parallel to a surface of the nonwoven fabric.
  • the glass fibers have an average fiber diameter of 7 to 15 ⁇ m and an average fiber length of 10 to 50 mm.
  • the content of the glass fiber is 90-99%, and the content of the low melting point organic fiber is 1%-10%.
  • the glass fibers are substantially completely single-fibrillated, and then the air-laid nonwoven fabric is thin, and the basis weight can be about 50-100 g/m 2 . Since the glass fiber is stretched in the carding machine, the glass fiber is straight, the glass fiber is not bent, the glass fiber is evenly distributed in the horizontal plane, and there is no through-glass fiber in the plane of the vertical nonwoven fabric, so the layer of the plurality of laminated nonwoven fabrics is laminated. A lot, glass fiber and fiberglass have only a few point contacts.
  • the non-woven fabric and the non-woven fabric are bonded by the melted organic fiber, so that the void formed by the glass fiber contact and the nonwoven fabric lamination is not filled with the adhesive, the heat conduction area is reduced, and the heat insulation performance is greatly improved.
  • the internal core material used in the above vacuum insulation panel has a thermal conductivity of 1.0-1.8 mw/mk.
  • the air-laid felt has a thin basis weight of about 50-80 g/m 2 , because the fiber is stretched in the carding machine, The fiber is straight, the fiber is not bent, there is no penetrating fiber in the vertical felt plane, the number of layers is many, the fiber and the fiber have only a few point contact, and the gap formed by the fiber contact and lamination is not filled with adhesive, which reduces the heat conduction area.
  • the thermal insulation performance is better than that of the non-woven fabric produced by the wet method, and has the advantages of simple process, low production cost, energy saving, and no waste water discharge.
  • a method for manufacturing a vacuum insulation panel comprising the following steps:
  • the surface extends in substantially parallel directions;
  • the present invention uses a dry non-woven process to make the glass fibers substantially completely single-fibrillated, and then the air-laid nonwoven fabric is very thin, and the basis weight can be about 50-100 g/m 2 .
  • the glass fiber is stretched in the carding machine, the glass fiber is straight, the glass fiber is not bent, the glass fiber is evenly distributed in the horizontal plane, and there is no vertical fiberglass through the plane of the nonwoven fabric.

Abstract

L'invention concerne un procédé de fabrication pour un matériau central interne utilisé pour un panneau d'isolation sous vide, lequel procédé comprend les étapes suivantes, consistant : à fabriquer des tissus non tissés à partir de multiples fibres de verre et de fibres organiques à point de fusion bas à l'aide d'un procédé non tissé sec, et, dans l'étape, la plus grande partie des multiples fibres de verre s'étendant dans une direction fondamentalement parallèle aux tissus non tissés fabriqués ; et à stratifier les multiples tissus non tissés. Le matériau central interne fabriqué à l'aide de ce procédé a d'excellentes performances d'isolation thermique, et le procédé de fabrication a un processus de production simple et un faible coût.
PCT/CN2016/106701 2015-11-23 2016-11-22 Procédés de fabrication pour matériau central interne utilisé pour panneau d'isolation sous vide, et panneau d'isolation sous vide WO2017088721A1 (fr)

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CN201510815554.1 2015-11-23
CN201510815554.1A CN106015839A (zh) 2015-11-23 2015-11-23 一种真空绝热板使用的内部芯材和真空绝热板的制造方法

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CN115262081A (zh) * 2022-07-25 2022-11-01 泰山玻璃纤维有限公司 一种高强度连续玻纤防火保温板的生产工艺和生产线

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CN106015839A (zh) * 2015-11-23 2016-10-12 福建赛特新材股份有限公司 一种真空绝热板使用的内部芯材和真空绝热板的制造方法
CN106015838A (zh) * 2015-11-23 2016-10-12 福建赛特新材股份有限公司 一种真空绝热板使用的内部芯材及真空绝热板
CN107953496A (zh) * 2017-12-08 2018-04-24 刘军 一种真空绝热板芯材及其制备工艺
CN108642706A (zh) * 2018-05-11 2018-10-12 上海邦季新材料有限公司 一种真空隔热板用玻璃纤维芯材的制备方法
CN108488545A (zh) * 2018-05-11 2018-09-04 上海邦季新材料有限公司 真空隔热板用玻璃纤维芯材的制备方法
CN108729016A (zh) * 2018-07-10 2018-11-02 张瑜 一种玻纤合成保温棉毡及其制备方法
CN109853137A (zh) * 2019-02-21 2019-06-07 浙江华恒复合材料有限公司 一种干法无针刺制备真空绝热板芯材的方法及生产设备
CN115626323A (zh) * 2022-10-14 2023-01-20 泰山玻璃纤维有限公司 一种真空绝热板自动化生产系统

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