CN104373751A - 一种长径比差异的vip玻璃纤维芯材 - Google Patents

一种长径比差异的vip玻璃纤维芯材 Download PDF

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CN104373751A
CN104373751A CN201310349076.0A CN201310349076A CN104373751A CN 104373751 A CN104373751 A CN 104373751A CN 201310349076 A CN201310349076 A CN 201310349076A CN 104373751 A CN104373751 A CN 104373751A
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vip
length
glass fiber
diameter
glass fibre
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陈照峰
周介明
李承东
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Suzhou VIP New Material Co Ltd
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Suzhou VIP New Material Co Ltd
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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
    • F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)

Abstract

本发明公开了一种长径比差异的VIP玻璃纤维芯材，其特征在于由不同长径比的玻璃纤维制成的玻璃纤维芯材片通过叠加而成。芯材片中玻璃纤维平均长度为4～25mm，平均直径为0.5～8μm。长径比小的玻璃纤维芯材片与长径比大的玻璃纤维芯材片交错叠层，叠加层数为2～100层。本发明的优点在于采用本发明所述的长径比差异的VIP玻璃纤维芯材制备的VIP导热系数更低，使用寿命更长。该芯材可用作建筑、机械、热能等领域的隔热元件或隔热填料，也可以用作VIP的芯材。

Description

一种长径比差异的VIP玻璃纤维芯材
技术领域
本发明涉及一种无机复合材料毡，特别是涉及一种长径比差异的VIP玻璃纤维芯材。
背景技术
玻璃纤维真空绝热板(GF-VIP)由表面高效阻隔膜、玻璃纤维芯材、吸气剂或干燥剂构成，是一种新型、高效节能的保温绝热材料，导热系数可低至0.003mW/(m·K)以下，成为目前世界上导热系数最低的材料。玻璃纤维芯材是真空绝热板(VIP)中的支撑体，是一种多孔毡，具有高的孔隙率，是决定VIP导热系数的关键。
公开号为CN101793340B的发明专利上公开了一种真空绝热板芯材及其制造方法。该芯材采用48份矿物棉、45份玻璃纤维棉27～31°SR和35份玻璃纤维棉18°SR作为原材料，通过独立制浆、稀释除渣、酸度调节、除渣抄造、干燥和分切之后，制备出高性能的真空绝热板芯材。
公开号为CN1212485C的发明专利上公开了一种真空隔热材料及使用它的设备。该真空隔热材料的芯材采用多枚以SiO2为主要成分的具有层叠结构的片材作为芯材。芯材中的纤维直径在１０μm以下，具有优良的绝热性能。
目前，GF-VIP芯材采用同一规格的玻璃纤维芯材片通过叠加而成。离心玻璃纤维棉的纤维直径较为粗大，长度较长，具有性脆的弱点。火焰玻璃纤维棉的纤维直径较小，长度短，具有柔软、手感较好的特点。若采用离心玻璃纤维棉和火焰玻璃纤维棉作为原材料，需要根据它们的配比采用恰当的制浆工艺，才能制得纤维分布均匀、平铺排列的VIP芯材。虽然在部分场合，可通过将不同工艺、不同纤维直径和不同纤维长度的玻璃纤维进行混合制浆、成型、烘干处理得到性能较为稳定的玻璃纤维芯材。但是不同长径比的玻璃纤维在水溶液中的悬浮性不一样，易导致纤维在芯材上下表面的分配含量不同，造成芯材强度分布的不均匀，制成的VIP导热系数也较难精确地控制。
发明内容
本发明所要解决的技术问题是克服现有的VIP玻璃纤维芯材的缺点，提供一种长径比差异的VIP玻璃纤维芯材，该芯材可用作建筑、机械、热能等领域的隔热元件或隔热填料，也可以用作VIP的芯材。
本发明所述的一种长径比差异的VIP玻璃纤维芯材，其特征在于由不同长径比的玻璃纤维制成的玻璃纤维芯材片通过叠加而成。芯材片中玻璃纤维平均长度为4～25mm，平均直径为0.5～8μm。
通常来说，长径比大的玻璃纤维在成型过程中，更加容易平铺排列。因此，长径比大的玻璃纤维芯材具有较长的热传导路径，制成的VIP导热系数也较小。然而在同样的纤维分散度情况下，长径比大的玻璃纤维芯材内部的孔隙较大。内外相互连通的大孔隙使得VIP内部残留的气体很容易构成循环流通的路径。因此，长径比大的玻璃纤维芯材制成的VIP初始导热系数较大，但是对内部气体含量较为敏感，导热系数上升很快，具有较短的服役寿命。本发明通过将长径比小的玻璃纤维芯材片与长径比大的玻璃纤维芯材片交错叠层，叠加层数为2～100层，使得芯材中的大孔径不能相互连通，达到阻碍VIP内部气体在大范围内流动的目的。
与现有VIP玻璃纤维芯材相比，本发明的优点在于：(1)所述的一种长径比差异的VIP玻璃纤维芯材制备的VIP导热系数更低，寿命更长；(2)成本低，废料可回收利用。
具体实施方法
下面结合具体实施例，进一步阐明本发明，应理解这些实施例仅用于说明本发明而不用于限制本发明的范围，在阅读了本发明之后，本领域技术人员对本发明的各种等价形式的修改均落于本申请所附权利要求所限定。
实施例1
将2片厚度为3mm的平均长径比为500的玻璃纤维芯材片分别放置于芯材的上、下表面。10片厚度为１mm的平均长径比为800的玻璃纤维芯材片放置于中间。通过烘干、抽真空工艺之后，测试VIP的导热系数，为0.0022W/(m·K)。
实施例2
将2片厚度为5.5mm的平均长径比为800的玻璃纤维芯材片分别放置于芯材的上、下表面。15片厚度为１mm的平均长径比为1200的玻璃纤维芯材片放置于中间。通过烘干、抽真空工艺之后，测试VIP的导热系数，为0.0024W/(m·K)。
实施例3
将2片厚度为5.8mm的平均长径比为600的玻璃纤维芯材片和2片厚度为5.5mm的平均长径比为500的玻璃纤维芯材片分别放置于芯材的上、下表面。10片厚度为0.5mm的平均长径比为1000的玻璃纤维芯材片放置于中间。通过烘干、抽真空工艺之后，测试VIP的导热系数，为0.0025W/(m·K)。
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的范围的行为。

Claims (5)

1.一种长径比差异的VIP玻璃纤维芯材，其特征在于由不同长径比的玻璃纤维制成的玻璃纤维芯材片通过叠加而成。
2.依据权利要求１所述的长径比差异的VIP玻璃纤维芯材，其特征在于芯材片中玻璃纤维平均长度为4～25mm。
3.依据权利要求1所述的长径比差异的VIP玻璃纤维芯材，其特征在于芯材片中玻璃纤维平均直径为0.5～8μm。
4.依据权利要求１所述的长径比差异的VIP玻璃纤维芯材，其特征在于长径比小的玻璃纤维芯材片与长径比大的玻璃纤维芯材片交错叠层。
5.依据权利要求１所述的长径比差异的VIP玻璃纤维芯材，其特征在于玻璃纤维芯材片的叠加层数为2～100层。
CN201310349076.0A 2013-08-12 2013-08-12 一种长径比差异的vip玻璃纤维芯材 Pending CN104373751A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104494235A (zh) * 2015-01-06 2015-04-08 青岛科瑞新型环保材料有限公司 一种真空绝热板及其制造方法
CN109945016A (zh) * 2018-05-11 2019-06-28 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
CN112092471A (zh) * 2020-09-22 2020-12-18 南通远顺耐纤有限公司 一种交错重叠式vip玻璃纤维芯材

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101363566A (zh) * 2007-08-06 2009-02-11 三菱电机株式会社 真空隔热材料及绝热箱
JP2010007683A (ja) * 2008-06-24 2010-01-14 Mitsubishi Electric Corp 真空断熱材
US7754122B2 (en) * 2001-09-28 2010-07-13 Johns Manville Equipment and duct liner insulation and method
CN102971571A (zh) * 2010-07-06 2013-03-13 日立空调·家用电器株式会社 真空绝热材料以及使用了该真空绝热材料的冰箱
CN203082454U (zh) * 2012-09-27 2013-07-24 辽宁科途环保节能材料有限公司 一种玻璃纤维隔板与硬质岩棉复合芯材vip板

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7754122B2 (en) * 2001-09-28 2010-07-13 Johns Manville Equipment and duct liner insulation and method
CN101363566A (zh) * 2007-08-06 2009-02-11 三菱电机株式会社 真空隔热材料及绝热箱
JP2010007683A (ja) * 2008-06-24 2010-01-14 Mitsubishi Electric Corp 真空断熱材
CN102971571A (zh) * 2010-07-06 2013-03-13 日立空调·家用电器株式会社 真空绝热材料以及使用了该真空绝热材料的冰箱
CN203082454U (zh) * 2012-09-27 2013-07-24 辽宁科途环保节能材料有限公司 一种玻璃纤维隔板与硬质岩棉复合芯材vip板

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104494235A (zh) * 2015-01-06 2015-04-08 青岛科瑞新型环保材料有限公司 一种真空绝热板及其制造方法
CN109945016A (zh) * 2018-05-11 2019-06-28 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
CN112092471A (zh) * 2020-09-22 2020-12-18 南通远顺耐纤有限公司 一种交错重叠式vip玻璃纤维芯材

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Application publication date: 20150225