CN105839801A - Insulation board - Google Patents

Insulation board Download PDF

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Publication number
CN105839801A
CN105839801A CN201610338628.1A CN201610338628A CN105839801A CN 105839801 A CN105839801 A CN 105839801A CN 201610338628 A CN201610338628 A CN 201610338628A CN 105839801 A CN105839801 A CN 105839801A
Authority
CN
China
Prior art keywords
layer
warming plate
material layer
cavity structure
porous material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610338628.1A
Other languages
Chinese (zh)
Inventor
胡映宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi University
Original Assignee
Guangxi University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangxi University filed Critical Guangxi University
Priority to CN201610338628.1A priority Critical patent/CN105839801A/en
Publication of CN105839801A publication Critical patent/CN105839801A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78Heat insulating elements
    • E04B1/80Heat insulating elements slab-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78Heat insulating elements
    • E04B1/80Heat insulating elements slab-shaped
    • E04B1/803Heat insulating elements slab-shaped with vacuum spaces included in the slab
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/304Insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00Buildings or parts thereof

Abstract

The embodiment of the invention discloses an insulation board which comprises a surface layer (3), a middle layer (2) and a bottom layer (1), wherein the surface layer (3), the middle layer (2) and the bottom layer (1) are compounded together; the middle layer (2) comprises a microporous material layer (6) and a multilayer cavity structure (5) arranged in the microporous material layer (6); the multilayer cavity structure (5) is filled with an insulation filling material. The middle layer of the insulation board provided by the invention comprises the microporous material layer and the cavity structure, and the cavity structure is filled with the insulation filling material, so that compared with a simple insulation board with a plate-shaped structure in the prior art, the insulation board provided by the invention is capable of obviously improving the insulation effect; furthermore, compared with a traditional foaming insulation board, the insulation board provided by the invention has the advantages that the strength is obviously improved, the weather resistance is good, a protective layer is not needed to be additionally arranged on the surface, the quality is high, and the insulation board is integrated with an insulation function and a decoration function.

Description

A kind of warming plate
Technical field
The present invention relates to insulation material technical field, more particularly, it relates to a kind of warming plate.
Background technology
Insulation material is a kind of construction material common in building, the field such as industrial, civilian, currently commonly uses Insulation material have polyurethane, polystyrene, phenolic board, extruded sheet, rubber and plastic etc..Warming plate is by protecting The sheet material that adiabator is made.
Current warming plate heat-insulating property is the best, and soundproof effect problem of poor often can only be led in practice Cross increase insulation material thickness to realize heat insulation effect, expend material, take up space.It addition, warming plate Inflammable, add fire retardant often high cost;The alite paste that warming plate uses would generally discharge volatility to be had Machine thing, poisonous has abnormal flavour, affects human health problems;Warming plate needs to solve resistance to compression, impact strength Relatively low problem;Warming plate unprotect layer, destructible, weatherability is poor, easy-weathering, has a strong impact on the use longevity Life.When doing wall thermal insulating, warming plate and wall connecting complex process, loaded down with trivial details, general warming plate of constructing And the connection between plate all use splicing and fastening bolt fixed form, the most not only construct loaded down with trivial details time-consumingly, And it is excessive to easily cause piece, metope out-of-flatness and being easily deformed comes off.
Therefore, without increasing its thickness while how improving warming plate heat insulation effect, this area skill is become The technical problem that art personnel are urgently to be resolved hurrily.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of warming plate, to improve warming plate heat insulation effect While without increasing the purpose of its thickness.
For achieving the above object, the present invention provides following technical scheme:
A kind of warming plate, including top layer, intermediate layer and bottom, described top layer, described intermediate layer and described Bottom is combined with each other;Described intermediate layer includes porous material layer and is arranged in described porous material layer Multi-layer cavity structure, is filled with thermo insulating filling material in described cavity structure.
Preferably, in above-mentioned warming plate, every layer of described cavity structure is some continuous print holes, adjacent Hole is isolated by described porous material layer.
Preferably, in above-mentioned warming plate, described some continuous print holes are multi-tier arrangement, and adjacent layer passes through Described porous material layer is isolated, hole interlaced arrangement adjacent in adjacent layer.
Preferably, in above-mentioned warming plate, described hole is polygon, circle, oval or cellular.
Preferably, in above-mentioned warming plate, described thermo insulating filling material is air, noble gas, foaming Polyurethane, phenolic aldehyde or aeroge.
Preferably, in above-mentioned warming plate, described porous material layer be organic hard material layer or inorganic firmly Material layer.
Preferably, in above-mentioned warming plate, described organic material layer includes foaming PVC or bamboo chip;Described Inorganic material layer includes foam cement.
Preferably, in above-mentioned warming plate, described top layer and described bottom are hard material layer.
Preferably, in above-mentioned warming plate, the surface on described top layer is additionally provided with decorative layer.
Preferably, in above-mentioned warming plate, the two ends that described warming plate in axial direction extends are provided with recessed Groove or projection, the described projection being arranged on different warming plate can coordinate with described groove in grafting.
From above-mentioned technical scheme it can be seen that the intermediate layer of the warming plate of present invention offer includes micropore Material layer and cavity structure, and cavity structure are filled with thermo insulating filling material, simple with prior art The warming plate of platy structure compare, warming plate provided by the present invention can significantly improve its heat insulation effect, And, without increasing the thickness of warming plate while improving its heat insulation effect.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below, Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art, On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The schematic cross-section of a kind of warming plate that Fig. 1 is provided by the embodiment of the present invention;
The structural representation in a kind of warming plate intermediate layer that Fig. 2 is provided by the embodiment of the present invention;
Fig. 3 installs the structural representation of groove and projection by a kind of warming plate that the embodiment of the present invention is provided;
The overall structure schematic cross-section of a kind of warming plate that Fig. 4 is provided by the embodiment of the present invention.
Wherein, 1 it is bottom, 2 is intermediate layer, 3 is top layer, 4 is decorative layer, 5 is cavity structure, 6 is Porous material layer, 7 be groove, 8 for projection.
Detailed description of the invention
The core of the present invention is to provide a kind of warming plate, with improve while warming plate heat insulation effect without Increase its thickness but the high purpose of case hardness.
Hereinafter, referring to the drawings embodiment is illustrated.Additionally, embodiments illustrated below is not to right Summary of the invention described in requirement plays any restriction effect.It addition, composition represented by example below Full content is not limited to as necessary to the solution of the invention described in claim.
Refer to the cross section signal of a kind of warming plate that Fig. 1 to Fig. 4, Fig. 1 are provided by the embodiment of the present invention Figure;The structural representation in a kind of warming plate intermediate layer that Fig. 2 is provided by the embodiment of the present invention;Fig. 3 is this A kind of warming plate that inventive embodiments is provided installs the structural representation of groove and projection;Fig. 4 is the present invention The overall structure schematic cross-section of a kind of warming plate that embodiment is provided.
The warming plate that the embodiment of the present invention is provided includes top layer 3, intermediate layer 2 and bottom 1, wherein, top layer 3, intermediate layer 2 and bottom 1 are combined with each other;Intermediate layer 2 includes porous material layer 6 and is arranged on poromerics Multi-layer cavity structure 5 in layer 6, is filled with thermo insulating filling material in cavity structure 5.
Intermediate layer 2 in the warming plate that the present invention provides includes porous material layer 6 and cavity structure 5, and cavity Being filled with thermo insulating filling material in structure 5, the coefficient of heat conduction of thermo insulating filling material is low single with prior art The warming plate of pure platy structure is compared, and warming plate provided by the present invention can significantly improve its insulation effect Really, and, without increasing the thickness of warming plate while improving its heat insulation effect.
It should be noted that above-mentioned every layer of cavity structure 5 is the porous being arranged in porous material layer 6, i.e. Some continuous print holes, wherein, the arrangement form in hole is that unordered shape arranges, and also can arrange in orderly shape.? In order in shape arrangement, the interval between the shape in hole, size and adjacent holes is all carried out in specific rule Arrangement.Adjacent holes is isolated by porous material layer 6.
In the embodiment of the present invention, some continuous print holes are multi-tier arrangement, so-called multilamellar i.e. according to from bottom 1 to Intermediate layer 2 is divided into many levels by the direction on top layer 3, if the dry hole wherein in every layer is arranged continuously, and Adjacent layer is isolated by porous material layer 6, hole interlaced arrangement adjacent in adjacent layer.
If dry hole is also divided into multiple rows of in every layer, hole interlaced arrangement adjacent in adjacent row;Or adjacent row In adjacent hole be mutually aligned.Above-mentioned hole is polygon, circle, oval or cellular.
Cavity structure 5 is filled with the thermo insulating filling material that heat conductivity is low, to improve the insulation of this warming plate Effect.Above-mentioned thermo insulating filling material is divided into fixing material and gas material, and wherein, solid material can be Polyurethane, phenolic aldehyde or aeroge;Gas material can be the material of the good heat-insulation effect such as air or noble gas Material, in order to reduce cost and difficulty of processing, this thermo insulating filling material is air.
Micropore in porous material layer 6 can be closed pore, it is ensured that thermal and insulating performance;As required soundproof effect Good then micropore is open-celled structure, acoustic energy decay can be made to produce sound-absorbing effect, reach the function of sound insulation. Porous material layer 6 is organic hard material layer or inorganic hard material layer.So-called porous material layer 6 is for using Micro-aperture technique is made to guarantee that porous material layer 6 is internally formed microcellular structure, effectively intercepts heat energy and passes Lead;Porous material layer 6 has porous venting capability simultaneously, and acoustic energy decay can be made to produce sound-absorbing effect, Reach the function of sound insulation.Organic hard material layer of the porous material layer 6 being capable of this function includes foaming PVC or bamboo chip;Inorganic hard material layer includes foam cement.
In order to improve the resistance to compression of warming plate, shock resistance, extend the service life of warming plate.Warming plate Top layer 3 make for hard material.This top layer 3 can by composite ganoine PVC, or non-foamed cement surface, Bamboo and woods fiber plate, pottery, glass etc. are fabricated by, the resistance to compression shock resistance energy overall to increase insulation material Power, is effective against aging, air slaking phenomenon, extends the materials'use life-span.It addition, top layer 3 is in proof strength Under conditions of can be made ratio relatively thin, its thickness is fewer than the mortar cover of common insulation material more than 50% Times, to reduce thickness and the weight of insulation material.
In order to improve the resistance to compression of warming plate, shock resistance further, extend the service life of warming plate. The bottom 1 of warming plate is made for hard material layer.
Warming plate in the embodiment of the present invention has or the micropore performance of self-forming due to material itself, tissue Stability Analysis of Structures, it is not necessary to bonding agent allows granular material stick together, abandoning employing release volatility has Machine thing, as alite paste, has fire-retardant, nontoxic, the effect of environmental protection.
The surface on top layer 3 is additionally provided with decorative layer 4, and top layer 3 has the function in protection intermediate layer 2, and arranges Decorative layer 4 on top layer 3 can beautify the outward appearance of warming plate.Decorative layer 4 can print as required or cover Film different pattern and color, insulation, combination with decorative surfaces integration, it is ensured that good looking appearance, eliminate wall Face Puttying, the construction of paint of whitewashing a wall, save material, and cost is lower, fits up faster, having without wall paint Evil gas release, is more beneficial for environment protection health.
Top layer 3, intermediate layer 2 and bottom 1 can use multiple co-extrusion technology to be processed and formed at one time;So-called multiple common Squeeze technology this be a kind of method by extruded mould molding, the sheet material of several meters of length can be done.
Installing for convenience, the two ends that warming plate in axial direction extends are provided with groove 7 or projection 8, if The projection 8 put on different warming plates can coordinate with groove 7 in grafting.Splicing between warming plate can be led to The buckle crossing groove 7 and projection 8 completes, install simple and convenient while, it also avoid piece excessive, Poor thermal insulation property, insulation material be yielding and the phenomenon that comes off.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art See, generic principles defined herein can without departing from the spirit or scope of the present invention, Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.

Claims (10)

1. a warming plate, it is characterised in that include top layer (3), intermediate layer (2) and bottom (1), Described top layer (3), described intermediate layer (2) and described bottom (1) are combined with each other;Described intermediate layer (2) porous material layer (6) and the multi-layer cavity structure being arranged in described porous material layer (6) are included (5), described cavity structure (5) is filled with thermo insulating filling material.
2. warming plate as claimed in claim 1, it is characterised in that every layer of described cavity structure (5) is Some continuous print holes, adjacent hole is isolated by described porous material layer (6).
3. warming plate as claimed in claim 2, it is characterised in that described some continuous print holes are multilamellar Arranging, adjacent layer is isolated by described porous material layer (6), hole interlaced arrangement adjacent in adjacent layer.
4. warming plate as claimed in claim 3, it is characterised in that described hole be polygon, circle, Oval or cellular.
5. warming plate as claimed in claim 1, it is characterised in that described thermo insulating filling material be air, Noble gas, polyurathamc, phenolic aldehyde or aeroge.
6. warming plate as claimed in claim 1, it is characterised in that described porous material layer (6) is for having Machine hard material layer or inorganic hard material layer.
7. warming plate as claimed in claim 6, it is characterised in that described organic hard material layer includes Foaming PVC or bamboo chip;Described inorganic material layer includes foam cement.
8. warming plate as claimed in claim 1, it is characterised in that described top layer (3) and described bottom (1) it is hard material layer.
9. warming plate as claimed in claim 8, it is characterised in that the surface of described top layer (3) also sets It is equipped with decorative layer (4).
10. warming plate as claimed in any one of claims 1-9 wherein, it is characterised in that described warming plate edge The two ends that axial direction extends are provided with groove (7) or projection (8), are arranged on different warming plate Described projection (8) can coordinate with described groove (7) in grafting.
CN201610338628.1A 2016-05-20 2016-05-20 Insulation board Pending CN105839801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610338628.1A CN105839801A (en) 2016-05-20 2016-05-20 Insulation board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610338628.1A CN105839801A (en) 2016-05-20 2016-05-20 Insulation board

Publications (1)

Publication Number Publication Date
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106760348A (en) * 2017-03-09 2017-05-31 江苏省建筑科学研究院有限公司 A kind of insulation and decoration acoustic wall board and its construction method of installation
CN106739378A (en) * 2016-12-28 2017-05-31 广西大学 A kind of Multilayer honeycomb board
CN106906980A (en) * 2017-03-09 2017-06-30 浙江天振竹木开发有限公司 Floor based on elastic interlayer
CN108625502A (en) * 2017-03-17 2018-10-09 长沙星纳气凝胶有限公司 A kind of heat insulating board and preparation method thereof
CN109835363A (en) * 2017-11-28 2019-06-04 中车齐齐哈尔车辆有限公司 Insulation construction, the manufacturing method of insulation construction, chassis and refrigerator car

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EP0397598A2 (en) * 1989-05-02 1990-11-14 Ferrara, Santo Wall panel
CN200955222Y (en) * 2006-10-11 2007-10-03 贾镠平 Light heat-insulation wall board
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CN102071753A (en) * 2011-03-02 2011-05-25 天津开发区福林发展有限公司 Plaster composite inner wallboard of concrete column
CN202831357U (en) * 2012-10-18 2013-03-27 宜昌光大陶粒制品有限责任公司 Multi-row hole ceramisite concrete external wall batten
CN202969712U (en) * 2012-11-27 2013-06-05 浙江建设职业技术学院 Light partition board made of flue gas desulfurization gypsum
CN103774785A (en) * 2012-10-18 2014-05-07 宜昌光大陶粒制品有限责任公司 Multi-row hole ceramisite concrete external wall batten
CN103850388A (en) * 2012-12-04 2014-06-11 辽宁亚泰新型建材科技有限公司 Outer wall self-thermal insulation wallboard and production method thereof
CN204023878U (en) * 2014-07-18 2014-12-17 关淏 A kind of light cellular partition board
CN104369256A (en) * 2013-08-15 2015-02-25 天津市滨海新区励胜智成建材科技发展有限公司 Wall composite insulation board and production method thereof
CN204715617U (en) * 2015-03-27 2015-10-21 中南大学 A kind of light composite insulating wall board
CN205776834U (en) * 2016-05-20 2016-12-07 广西大学 A kind of warming plate

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397598A2 (en) * 1989-05-02 1990-11-14 Ferrara, Santo Wall panel
CN200955222Y (en) * 2006-10-11 2007-10-03 贾镠平 Light heat-insulation wall board
CN101831987A (en) * 2010-04-30 2010-09-15 深圳阿科太新型建材有限公司 Light refractory partition concrete batten and preparation method thereof
CN102071753A (en) * 2011-03-02 2011-05-25 天津开发区福林发展有限公司 Plaster composite inner wallboard of concrete column
CN202831357U (en) * 2012-10-18 2013-03-27 宜昌光大陶粒制品有限责任公司 Multi-row hole ceramisite concrete external wall batten
CN103774785A (en) * 2012-10-18 2014-05-07 宜昌光大陶粒制品有限责任公司 Multi-row hole ceramisite concrete external wall batten
CN202969712U (en) * 2012-11-27 2013-06-05 浙江建设职业技术学院 Light partition board made of flue gas desulfurization gypsum
CN103850388A (en) * 2012-12-04 2014-06-11 辽宁亚泰新型建材科技有限公司 Outer wall self-thermal insulation wallboard and production method thereof
CN104369256A (en) * 2013-08-15 2015-02-25 天津市滨海新区励胜智成建材科技发展有限公司 Wall composite insulation board and production method thereof
CN204023878U (en) * 2014-07-18 2014-12-17 关淏 A kind of light cellular partition board
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CN205776834U (en) * 2016-05-20 2016-12-07 广西大学 A kind of warming plate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106739378A (en) * 2016-12-28 2017-05-31 广西大学 A kind of Multilayer honeycomb board
CN106760348A (en) * 2017-03-09 2017-05-31 江苏省建筑科学研究院有限公司 A kind of insulation and decoration acoustic wall board and its construction method of installation
CN106906980A (en) * 2017-03-09 2017-06-30 浙江天振竹木开发有限公司 Floor based on elastic interlayer
CN108625502A (en) * 2017-03-17 2018-10-09 长沙星纳气凝胶有限公司 A kind of heat insulating board and preparation method thereof
CN109835363A (en) * 2017-11-28 2019-06-04 中车齐齐哈尔车辆有限公司 Insulation construction, the manufacturing method of insulation construction, chassis and refrigerator car

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Application publication date: 20160810

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