WO2011066789A1 - 一种芯材、其制备方法及采用该芯材的真空绝热板 - Google Patents

一种芯材、其制备方法及采用该芯材的真空绝热板 Download PDF

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Publication number
WO2011066789A1
WO2011066789A1 PCT/CN2010/079305 CN2010079305W WO2011066789A1 WO 2011066789 A1 WO2011066789 A1 WO 2011066789A1 CN 2010079305 W CN2010079305 W CN 2010079305W WO 2011066789 A1 WO2011066789 A1 WO 2011066789A1
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Prior art keywords
core material
glass wool
wool
vacuum insulation
centrifugal cotton
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PCT/CN2010/079305
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English (en)
French (fr)
Inventor
汪坤明
胡永年
洪国莹
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福建赛特新材股份有限公司
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Priority to JP2012600049U priority Critical patent/JP3181657U/ja
Publication of WO2011066789A1 publication Critical patent/WO2011066789A1/zh

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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
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum

Definitions

  • the invention relates to a core material for a vacuum insulation panel, a preparation method thereof and a vacuum insulation panel using the core material.
  • the vacuum insulation board is an upgraded product of insulation materials, and is a new type of insulation material that integrates high efficiency and energy saving.
  • the vacuum insulation panel is composed of a surface high barrier material and a core material, a getter or a desiccant.
  • the gas remaining in the adiabatic space is removed by maximizing the internal vacuum, so that various heat transfer paths caused by the gas are eliminated to insulate heat conduction, thereby achieving the purpose of heat preservation and energy saving.
  • traditional thermal insulation materials such as polyurethane foam
  • vacuum insulation panels do not use ODS materials during their production and application, and have low thermal conductivity and low thickness, which has the dual advantages of environmental protection and energy saving.
  • the core material used in the vacuum insulation panel generally selects a porous medium such as powdered silica, aerogel, glass fiber or microporous polyurethane, and each material has its advantages and disadvantages, such as micropores.
  • Polyurethane is not flame retardant; powdered silica has a high density, powder is not conducive to smoothing, which limits its wide application; while glass fiber, especially ultrafine glass wool, has many advantages, such as high strength and extremely low thermal conductivity. It has been developed and used, but the price of ultra-fine glass wool is high, which limits its wide application.
  • the main object of the present invention is to overcome the disadvantages of the prior art and to provide a core material for a vacuum insulation panel, which is reduced in manufacturing cost by incorporating centrifugal cotton and/or mineral wool into the ultrafine glass wool.
  • Another object of the present invention is to provide a method for producing a core material for a vacuum insulation panel.
  • a core material comprising ultrafine glass wool, and one or both of centrifugal cotton and mineral wool.
  • the core material is composed of ultrafine glass wool and centrifugal cotton, and the weight ratio of the two is 100:1 to 50.
  • the core material may also be composed of ultrafine glass wool and mineral wool, and the weight ratio of the two is 100:1 to 60.
  • the core material may also be composed of ultra-fine glass wool, centrifugal cotton and mineral wool, and the weight ratio of the three is 100:1 to 30:1-50.
  • the ultrafine glass wool, centrifugal cotton and mineral wool have a fiber diameter ranging from 1.2 to 12 ⁇ m.
  • the wet preparation method of the above core material comprises the following steps:
  • the ultrafine glass wool and one or both of the centrifugal cotton and the mineral wool are dosed and mixed into the beater, and the inorganic fiber raw materials are dissociated by the combination of mechanical and chemical methods.
  • the slurry is evenly arranged on the filter net of the twin-wire extruder through the conveying device, and then pressurized, and subjected to press dewatering and setting to obtain a wet sheet core material;
  • the wet sheet core material is conveyed to an oven at 100 to 180 ° C for drying, and is conveyed to a cutting area for cutting to obtain a core material meeting the size requirement.
  • the dry preparation method of the above core material comprises the following steps:
  • Step one the ultrafine glass wool and one or two of the centrifugal cotton and the mineral wool are compounded according to the weight ratio, and then placed in the tank, and fully mixed by high pressure gas to obtain a uniform mixed fiber;
  • the mixed fiber is conveyed to the carding device for carding and impurity removal, so that all the mixed fibers are basically in a straight single fiber state, in the process, the impurities and the lint in the mixed fiber are also removed;
  • Step three combing and separating the mixed fibers into felt fibers
  • the obtained felt-like fibers are wound up by a roll to obtain a rolled core material.
  • a vacuum insulation panel using the above core material comprising a closed high barrier packaging bag on the outer layer, a core material on the inner layer, and a getter or adsorbent disposed in the packaging bag, the core material being Ultra-fine glass wool, and one or two of centrifugal cotton and mineral wool.
  • the function of the core material in the vacuum insulation panel is to support the space of the VIP, which is the same as the column of the house, and at the same time acts to block the direct collision of molecules in the air for heat exchange.
  • a single ultra-fine glass wool is affected by various factors of the manufacturer, and different batches of products may differ.
  • the single ultra-fine glass wool is made into a VIP core material, and the wet process is prepared.
  • the ultra-fine glass wool fiber has a small diameter, the space between the fibers is too small, the core material is too dense, and the ultra-fine glass wool fiber is controlled.
  • the uniformity of space, the process control requirements in the production process are relatively strict, and it is not suitable for mass production; for the dry process, in the carding process, it is easy to break the fibers. To this end, it is necessary to add more ultrafine Glass wool fiber, therefore, the interfiber space of the product is too narrow.
  • the core material is made by mixing centrifugal cotton and/or mineral wool into the ultrafine glass wool. Since the diameter of the centrifugal cotton and the mineral wool is between 1.2 and 12 micrometers, the fiber diameter is uniform, and the space for supporting the fibers can be ensured, and The price is relatively low compared to the ultra-fine glass wool. Compared with the core material and vacuum insulation board made of single ultra-fine glass wool in the prior art, the production cost of the core material and the vacuum insulation board of the invention is significantly reduced while still retaining the strength. High and low thermal conductivity.
  • the core material of the present invention is a sheet-shaped heat insulating support material composed of one or two kinds of ultrafine glass wool, centrifugal cotton and mineral wool, which are mixed according to the following weight ratios:
  • the fiber diameter of the ultrafine glass wool, the centrifugal cotton, and the mineral wool is preferably 1.2 to 12 ⁇ m.
  • Embodiment 2 Wet preparation method of core material
  • the wet preparation method of the core material of the invention comprises the following steps:
  • the ultrafine glass wool and one or both of the centrifugal cotton and the mineral wool are compounded according to the weight ratio in the first embodiment, and then put into the beater, and the inorganic and inorganic methods are combined to form the inorganic
  • the fiber raw material dissociates the cost color slurry;
  • the so-called chemical method refers to the addition of an acid such as sulfuric acid or hydrochloric acid;
  • the slurry is evenly arranged on the filter net of the twin-wire extruder through the conveying device, and then pressurized, and subjected to press dewatering and setting to obtain a wet sheet core material;
  • the wet sheet core material is conveyed to an oven of 100 to 180 ° C for drying, and is conveyed to a cutting area for cutting to obtain a core material meeting the size requirement, and the thickness of the obtained core material is generally 2 to 10mm.
  • the dry preparation method of the core material of the invention comprises the following steps:
  • Step one the ultrafine glass wool and one or both of the centrifugal cotton and the mineral wool are compounded according to the weight ratio in the first embodiment, and then placed in the tank, and fully mixed by high pressure gas to obtain uniformity.
  • the mixed fiber is conveyed to the carding device for carding and impurity removal, so that all the mixed fibers are basically in a straight single fiber state, in the process, the impurities and the lint in the mixed fiber are also removed;
  • Step three combing and separating the mixed fibers into felt fibers
  • the obtained felt-like fiber is wound up by a roll to obtain a rolled core material, which is properly placed and used.
  • Embodiment 4 Vacuum insulation board
  • a vacuum insulation panel manufactured by using the core material of the first embodiment comprises a closed high barrier packaging bag on the outer layer, a core material on the inner layer, and a getter or adsorbent disposed in the packaging bag.
  • the vacuum insulation panel is prepared as follows:
  • the core material is placed in a heat treatment furnace and heated, the maximum temperature is 120-160 ° C; when the temperature rises to a set value of 120-160 ° C, the temperature is kept for 5-10 min, and then the heat treatment furnace is opened to take out the core material; It is required to put the laminated chip core material into a high barrier packaging bag, and place the getter or adsorbent in a certain position, and then put the high barrier bag with the core material into the pre-set vacuum sealing machine. Sealing is carried out to obtain a vacuum insulation panel, and finally the vacuum sealing machine is opened, and the vacuum insulation panel is taken out.
  • the production cost of the core material and the vacuum insulation board prepared by the invention can be reduced by 10%, while still retaining high strength and low thermal conductivity. advantage.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the centrifugal cotton fiber has a diameter of 5-9 microns.
  • the core material is prepared by a wet or dry process, it is further prepared into a VIP plate.
  • the centrifugal cotton fiber has a diameter of 5-9 microns.
  • the core material is prepared by a wet or dry process, it is further prepared into a VIP plate.
  • the invention manufactures the core material by incorporating centrifugal cotton and/or mineral cotton into the ultrafine glass wool, and the price of the centrifugal cotton and the mineral cotton is relatively low compared to the ultrafine glass wool, and the single superfine is used in the prior art.
  • the production cost of the core material and the vacuum insulation panel of the present invention is remarkably reduced, and the advantages of high strength and low thermal conductivity are still retained.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)

Description

一种芯材、其制备方法及采用该芯材的真空绝热板 技术领域
本发明涉及一种真空绝热板用的芯材、其制备方法及采用该芯材的真空绝热板。
背景技术
真空绝热板是保温材料的升级换代产品，是一种新型的、集高效与节能于一体的保温材料。真空绝热板是由表面高阻隔材料和芯材、吸气剂或干燥剂构成。通过最大限度提高内部真空度将存留在绝热空间的气体清除掉，从而使得气体导致的各种传热途径被消除来隔绝热传导，达到保温、节能的目的。相对于传统的聚氨酯泡沫等绝热材料，真空绝热板在其生产和应用过程中，不使用ODS物质，而且导热系数较低，而其厚度也较低，具有环保和节能的双重优点。
现有技术中，真空绝热板采用的芯材一般选择多孔介质，如粉状二氧化硅、气凝胶、玻璃纤维或微孔聚氨酯等材料，每一种材料都有其优缺点，如微孔聚氨酯不阻燃；粉状二氧化硅密度较大，粉状不利于平整，限制了其广泛应用；而玻璃纤维尤其是超细玻璃棉具有诸多优点，如强度高、导热系数极低，近年来得以大力发展使用，但是超细玻璃棉的价格较高，限制了它的广泛应用。
发明内容
本发明的主要目的在于克服现有技术的缺点，提供一种真空绝热板用的芯材，藉由在超细玻璃棉中掺入离心棉和/或矿物棉来降低其制造成本。
本发明的另一目的在于提供一种真空绝热板用芯材的制造方法。
本发明的再一目的在于提供一种真空绝热板。
本发明采用如下的技术方案：
一种芯材，包括有超细玻璃棉，以及离心棉和矿物棉中的一种或两种。
进一步地，该芯材由超细玻璃棉和离心棉组成，二者的重量配比为100：1～50。
进一步地，该芯材也可由超细玻璃棉和矿物棉组成，二者的重量配比为100：1～60。
进一步地，该芯材也可由超细玻璃棉、离心棉和矿物棉组成，三者的重量配比为100：1～30：1～50。
进一步地，所述超细玻璃棉、离心棉和矿物棉的纤维直径范围为1.2～12微米。
上述芯材的湿法制备方法，包括如下步骤：
步骤一，将超细玻璃棉与离心棉、矿物棉中的一种或两种按重量配比配料后投入到打浆机中，用机械和化学两者相结合的方法把无机纤维原料离解成本色料浆；
步骤二，将料浆通过输送设备均匀布置在双网挤浆机的过滤网上，然后加压，进行压榨脱水定型后得到湿的片状芯材；
步骤三，将湿的片状芯材输送到100～180℃的烘箱中烘干，并输送到裁切区进行裁切，得到符合尺寸要求的芯材。
上述芯材的干法制备方法，包括如下步骤：
步骤一，将超细玻璃棉与离心棉、矿物棉中的一种或两种按重量配比配料后放入料罐中，用高压气体鼓吹使其充分混合，得到均匀的混合纤维；
步骤二，将混合纤维输送到梳理设备，进行分梳和除杂，使得所有混合纤维基本成为伸直的单纤维状态，在此过程中，也除掉了混合纤维中的杂质和短绒；
步骤三，将分梳和除杂后的混合纤维梳制成毡状纤维；
步骤四，将得到的毡状纤维用卷筒收卷，得到成卷芯材。
采用上述芯材的一种真空绝热板，包括位于外层的封闭高阻隔包装袋、位于内层的的芯材，以及设于该包装袋内的吸气剂或吸附剂，所述芯材由超细玻璃棉，以及离心棉和矿物棉中的一种或两种组成。
在传统绝热材料中，对其传热做主要贡献的是残留于材料孔隙间的气体导热，在常规多孔状或纤维绝热材料中，空气对总体导热的传热贡献一般要远高于骨架导热和辐射传热量，要占到总导热系数的50%，甚至是80%。因而，可以通过减少甚至消除气体传导以提高绝热效果。
由于复合薄膜是软态的，真空绝热板中芯材的作用是支撑起VIP的空间，就同房屋的柱子，同时又起着阻挡空气中的分子直接碰撞而进行热交换的作用。单一的超细玻璃棉因受生产厂家的各种因素影响，不同批次的产品会有差别。而将单一的超细玻璃棉制作成VIP芯材，湿法工艺的制备，超细玻璃棉纤维直径细，纤维间支撑的空间太小，芯材过于密实，而且为控制超细玻璃棉纤维间空间的均匀性，生产工艺中的过程控制要求比较严格，不太适合大批量生产;而对于干法工艺，在梳理过程中，容易将纤维理断，为此，就需添加较多的超细玻璃棉纤维，因此，制品的纤维间空间过于狭小。
由在超细玻璃棉中掺入离心棉和/或矿物棉来制造芯材，由于离心棉和矿物棉直径在1.2-12微米间，纤维直径均匀，可以保证纤维间支撑的空间足够，而且其价格相对超细玻璃棉价格较低，与现有技术中采用单一超细玻璃棉制造的芯材及真空绝热板对比，本发明的芯材及真空绝热板的生产成本显著降低，同时依然保留强度高、导热系数低的优点。
具体实施方式
以下通过具体实施方式对本发明进行详细说明。
实施例一 芯材
本发明的芯材，为由超细玻璃棉与离心棉、矿物棉中的一种或两种按如下重量配比混合构成的片状隔热支撑材料：
超细玻璃棉：离心棉=100：1～50；或
超细玻璃棉：矿物棉=100：1～60；或
超细玻璃棉：离心棉：矿物棉=100：1～30：1～50。
其中，超细玻璃棉、离心棉和矿物棉的纤维直径优选为1.2～12微米。
实施例二 芯材的湿法制备方法
本发明的芯材的湿法制备方法，包括如下步骤：
步骤一，将超细玻璃棉与离心棉、矿物棉中的一种或两种按实施例一中的重量配比配料后投入到打浆机中，用机械和化学两者相结合的方法把无机纤维原料离解成本色料浆；所谓化学方法是指加入硫酸或盐酸等酸进行作用；
步骤二，将料浆通过输送设备均匀布置在双网挤浆机的过滤网上，然后加压，进行压榨脱水定型后得到湿的片状芯材；
步骤三，将湿的片状芯材输送到100～180℃的烘箱中烘干，并输送到裁切区进行裁切，得到符合尺寸要求的芯材，得到的芯材的厚度一般为2～10mm。
实施例三 芯材的干法制备方法
本发明的芯材的干法制备方法，包括如下步骤：
步骤一，将超细玻璃棉与离心棉、矿物棉中的一种或两种按实施例一中的重量配比配料后放入料罐中，用高压气体鼓吹使其充分混合，得到均匀的混合纤维；
步骤二，将混合纤维输送到梳理设备，进行分梳和除杂，使得所有混合纤维基本成为伸直的单纤维状态，在此过程中，也除掉了混合纤维中的杂质和短绒；
步骤三，将分梳和除杂后的混合纤维梳制成毡状纤维；
步骤四，将得到的毡状纤维用卷筒收卷，得到成卷芯材，妥善放置，备用。
实施例四 真空绝热板
采用实施例一中的芯材制造的一种真空绝热板，包括位于外层的封闭高阻隔包装袋、位于内层的的芯材，以及设于该包装袋内的吸气剂或吸附剂。该真空绝热板的制备方法如下：
首先将芯材置于热处理炉中并加温，最高温度为120-160℃；当温度升至设定的数值120-160℃后保温5-10min，然后打开热处理炉将芯材取出；按照厚度要求将层叠的片状芯材装入高阻隔包装袋，并将吸气剂或吸附剂放置到一定位置，然后将放有芯材的高阻隔包装袋放入到预先设置好的真空封口机中进行封口，得到真空绝热板，最后打开真空封口机，取出真空绝热板。
与现有技术中采用单一超细玻璃棉制造的芯材及真空绝热板对比，本发明制备的芯材及真空绝热板的生产成本降幅可达10%，同时依然保留强度高、导热系数低的优点。
实施例五：
本实施例的芯材，由超细玻璃棉与离心棉按如下重量配比混合构成的片状隔热支撑材料：
超细玻璃棉:离心棉=100:6;
其中，离心棉纤维直径为5-9微米。
采用湿法或干法工艺制备芯材后，进一步制备成VIP板。
由实施例芯材制成的绝热板性能比较：
项目 本实施例 超细玻璃棉芯材真空绝热板
导热系数（mW/m.k） 3.5 4.0
成本降低(%) 6 --
实施例六：
本实施例的芯材，由超细玻璃棉与离心棉按如下重量配比混合构成的片状隔热支撑材料：
超细玻璃棉:离心棉=100:8;
其中，离心棉纤维直径为5-9微米。
采用湿法或干法工艺制备芯材后，进一步制备成VIP板。
由实施例芯材制成的绝热板性能比较：
项目 本实施例 超细玻璃棉芯材真空绝热板
导热系数（mW/m.k） 3.6-3.7 4.0
成本降低(%) 6 --
上述仅为本发明的几个具体实施方式，但本发明的设计构思并不局限于此，凡利用此构思对本发明进行非实质性的改动，均应属于侵犯本发明保护范围的行为。
工业实用性
本发明藉由在超细玻璃棉中掺入离心棉和/或矿物棉来制造芯材，由于离心棉和矿物棉的价格相对超细玻璃棉价格较低，与现有技术中采用单一超细玻璃棉制造的芯材及真空绝热板对比，本发明的芯材及真空绝热板的生产成本显著降低，依然保留强度高、导热系数低的优点。

Claims (10)

  1. 一种芯材，包括有超细玻璃棉，其特征在于：还包括有离心棉和矿物棉中的一种或两种。
  2. 如权利要求1所述的一种芯材，其特征在于：它由超细玻璃棉和离心棉组成，二者的重量配比为100：1～50。
  3. 如权利要求1所述的一种芯材，其特征在于：它由超细玻璃棉和矿物棉组成，二者的重量配比为100：1～60。
  4. 如权利要求1所述的一种芯材，其特征在于：它由超细玻璃棉、离心棉和矿物棉组成，三者的重量配比为100：1～30：1～50。
  5. 如权利要求1或2或3或4所述的一种芯材，其特征在于：所述超细玻璃棉、离心棉和矿物棉的纤维直径范围为1.2～12微米。
  6. 权利要求1所述的一种芯材的制备方法，其特征在于：包括如下步骤：
    步骤一，将超细玻璃棉与离心棉、矿物棉中的一种或两种按重量配比配料后投入到打浆机中，用机械和化学两者相结合的方法把无机纤维原料离解成本色料浆；
    步骤二，将料浆通过输送设备均匀布置在双网挤浆机的过滤网上，然后加压，进行压榨脱水定型后得到湿的片状芯材；
    步骤三，将湿的片状芯材输送到100～180℃的烘箱中烘干，并输送到裁切区进行裁切，得到符合尺寸要求的芯材。
  7. 权利要求1所述的一种芯材的制备方法，其特征在于：包括如下步骤：
    步骤一，将超细玻璃棉与离心棉、矿物棉中的一种或两种按重量配比配料后放入料罐中，用高压气体鼓吹使其充分混合，得到均匀的混合纤维；
    步骤二，将混合纤维输送到梳理设备，进行分梳和除杂，使得所有混合纤维基本成为伸直的单纤维状态，在此过程中，也除掉了混合纤维中的杂质和短绒；
    步骤三，将分梳和除杂后的混合纤维梳制成毡状纤维；
    步骤四，将得到的毡状纤维用卷筒收卷，得到成卷芯材。
  8. 一种真空绝热板，包括位于外层的封闭高阻隔包装袋、位于内层的的芯材，以及设于该包装袋内的吸气剂或吸附剂，其特征在于：所述芯材由超细玻璃棉，以及离心棉和矿物棉中的一种或两种组成。
  9. 如权利要求1所述的一种真空绝热板，其特征在于：所述芯材由如下重量配比的组分组成：
    超细玻璃棉：离心棉=100：1～50；或
    超细玻璃棉：矿物棉=100：1～60；或
    超细玻璃棉：离心棉：矿物棉=100：1～30：1～50。
  10. 如权利要求8或9所述的一种真空绝热板，其特征在于：所述超细玻璃棉、离心棉和矿物棉的纤维直径范围为1.2～12微米。
PCT/CN2010/079305 2009-12-01 2010-12-01 一种芯材、其制备方法及采用该芯材的真空绝热板 WO2011066789A1 (zh)

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CN102797300A (zh) * 2012-08-01 2012-11-28 王志勇 一种复合保温板
CN103807569A (zh) * 2012-11-12 2014-05-21 苏州维艾普新材料有限公司 一种超薄叠层的真空绝热板芯材及其制备方法
CN104373761A (zh) * 2013-08-12 2015-02-25 苏州维艾普新材料股份有限公司 一种浸泡离心棉制作真空绝热板的方法
CN104373767A (zh) * 2013-08-12 2015-02-25 苏州维艾普新材料股份有限公司 一种超层结构超细离心玻璃纤维干法芯材
CN105155703A (zh) * 2015-09-22 2015-12-16 苏州维艾普新材料股份有限公司 一种stp芯材的制备方法
CN107698272B (zh) * 2017-11-03 2020-07-03 辽宁科途环保节能材料有限公司 一种真空绝热板用复合芯材及其制备方法

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