CN105459504A - High temperature resistant sound-absorbing insulation felt and processing technology thereof - Google Patents

High temperature resistant sound-absorbing insulation felt and processing technology thereof Download PDF

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Publication number
CN105459504A
CN105459504A CN201510814768.7A CN201510814768A CN105459504A CN 105459504 A CN105459504 A CN 105459504A CN 201510814768 A CN201510814768 A CN 201510814768A CN 105459504 A CN105459504 A CN 105459504A
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CN
China
Prior art keywords
high temperature
temperature resistant
felt
product
cotton
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Pending
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CN201510814768.7A
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Chinese (zh)
Inventor
蔡正杰
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ZHEJIANG LIANYANG NEW MATERIAL Co Ltd
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ZHEJIANG LIANYANG NEW MATERIAL Co Ltd
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Priority to CN201510814768.7A priority Critical patent/CN105459504A/en
Publication of CN105459504A publication Critical patent/CN105459504A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/06—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 structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • 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
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/70—Other properties
    • B32B2307/712—Weather resistant
    • 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
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • 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
    • B32B2605/00—Vehicles
    • 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
    • B32B2607/00—Walls, panels

Abstract

The invention relates to a high temperature resistant sound-absorbing insulation felt, which comprises a three-layer structure: an upper layer and a lower layer are respectively aluminum foil, chopped strand mat or surfacing mat, and a middle layer is fiberglass cotton. The three-layer structure is formed by stitch-knitting of high-silica fiberglass wires. The product has characteristics of flat surface of the surfacing mat, uniformly dispersed fiber, good hand feeling, strong air permeability, fast resin impregnation and the like. Due to good mold fitting performance, the product fits with surfaces of any products with complex shapes and mold products, can cover cloth marks, raise surface smoothness and anti-seepage performance and enhance interlaminar shear strength and surface toughness. Corrosion resistance and weather resistance of the product are raised. By combining fiberglass cotton of the product and the surface layer aluminium foil and surfacing mat/chopped strand mat, mechanical and physical properties of the final product, such as shock resistance and tensile strength, etc., are greatly enhanced. Fiberglass cotton is loose, porous and nonhygroscopic, and has effects of sound insulation and heat insulation. The special coating aluminium foil is light and soft and is easy for moulding. High-silica fiberglass wires are high temperature resistant, and are not easy to break during stitch-knitting.

Description

A kind of high temperature resistant acoustical absorption heat preserving felt and processing technology thereof
Technical field:
The present invention relates to technical field of composite materials, particularly relate to a kind of high temperature resistant acoustical absorption heat preserving felt and manufacture method thereof.
Background technology:
Existing high temperature resistant acoustical absorption heat preserving felt adopts glue to be bonded together cotton for glass with aluminium foil etc., and because the cohesive force of glue is by environment, the factors such as temperature affect equal strength and can decline gradually, occurs the layering that comes off after of long duration.
Summary of the invention:
The technical problem to be solved in the present invention is that existing high temperature resistant acoustical absorption heat preserving felt adopts glue to be bonded together cotton for glass with aluminium foil etc., because the cohesive force of glue is by environment, the factors such as temperature affect equal strength and can decline gradually, there is the deficiencies such as layering that come off after of long duration, a kind of high temperature resistant acoustical absorption heat preserving felt and manufacture method thereof are provided.
For solving the problems of the technologies described above, the present invention adopts so a kind of high temperature resistant acoustical absorption heat preserving felt, and it comprises three-decker, and it at the middle and upper levels, lower floor is aluminium foil respectively, shortly cuts felt or surperficial felt, intermediate layer is that glass is cotton, and this three-decker is formed through loop bonding by high silica glass line.
Above-mentioned high temperature resistant acoustical absorption heat preserving felt globality is very good, and surperficial felt surfacing fiber dispersion is even, good hand touch, and gas permeability is strong, the features such as resin impregnated speed is fast.Its good any complex-shaped product of volt mould sexual compatibility and molded article surface, can cover woven design, improves surface smoothness and leakproof, strengthens interlaminar shear strength and surface toughness simultaneously, improves corrosion resistance and the weather resisteant of product.Product has fabulous operability, and designability, and intermediate layer is that mineral wool has and well attracts insulation effect.Glass cotton and top layer aluminium foil, surperficial felt/short combination of cutting felt makes the mechanical and physical performances such as the shock resistance of end article and hot strength greatly improve.Glass cotton has loose porous, nonhygroscopic characteristic, sound insulation, heat insulation effect; The aluminium-foil paper light weight of specific coatings is soft, easily moulding feature; High silica glass line is high temperature resistant, during loop bonding, and not easily broken characteristic.
Further, described loop bonding line adopts the resistant to elevated temperatures high silica glass of twisting.Loop bonding line adopts the resistant to elevated temperatures high silica glass of twisting, and this ensure that and fit tightly between layers, special loop bonding line can not be cut because of the hard of metal in the process of making, and also can bear scorching of the high temperature being up to degree more than 1000 on the other hand; Secondly also solve the cotton diameter of glass and length trickle, the problem of intensity difference.
The present invention also discloses a kind of processing technology of high temperature resistant acoustical absorption heat preserving felt, comprise the steps: that the upper and lower to be sprawled or chopped device is short cuts by spreading yarn feeding device, intermediate layer is directly unreeled by unwinding device, three are stackedly added together, enter loop bonding device, by high speed loop bonding operation, be combined into an entirety.
Above-mentioned processing technology adopts reinforced needle plate, nook closing member, loop bonding line adopts the resistant to elevated temperatures high silica glass of twisting, this ensure that and fit tightly between layers, special loop bonding line can not be cut because of the hard of metal in the process of making, and also can bear scorching of the high temperature being up to degree more than 1000 on the other hand; Secondly also solve the cotton diameter of glass and length trickle, the problem of intensity difference; Individual layer glass cotton is the brute force without any direction, after increasing aluminium foil, goods are made to be provided with the characteristic of metal, the felt being easy to be formed after machine-shaping makes compound has larger intensity and makes this product be widely used in construction wall, heating and ventilating equipment, communications and transportation, pipeline, and domestic and international market demand is large.
The present invention has the following advantages: globality is very good, and surperficial felt surfacing fiber dispersion is even, good hand touch, and gas permeability is strong, the features such as resin impregnated speed is fast.Its good any complex-shaped product of volt mould sexual compatibility and molded article surface, can cover woven design, improves surface smoothness and leakproof, strengthens interlaminar shear strength and surface toughness simultaneously, improves corrosion resistance and the weather resisteant of product.Product has fabulous operability, and designability, and intermediate layer is that mineral wool has and well attracts insulation effect.Glass cotton and top layer aluminium foil, surperficial felt/short combination of cutting felt makes the mechanical and physical performances such as the shock resistance of end article and hot strength greatly improve.Glass cotton has loose porous, nonhygroscopic characteristic, sound insulation, heat insulation effect; The aluminium-foil paper light weight of specific coatings is soft, easily moulding feature; High silica glass line is high temperature resistant, during loop bonding, and not easily broken characteristic.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the present invention's high temperature resistant acoustical absorption heat preserving felt section.
Detailed description of the invention:
Below in conjunction with specific embodiment, the invention will be further described.
The present invention is a kind of high temperature resistant acoustical absorption heat preserving felt, and it comprises three-decker, and it at the middle and upper levels 1, lower floor 3 is aluminium foil respectively, shortly cuts felt or surperficial felt, and intermediate layer 2 is that glass is cotton, and this three-decker is formed through loop bonding by high silica glass line.Described loop bonding line adopts the resistant to elevated temperatures high silica glass of twisting.Loop bonding line adopts the resistant to elevated temperatures high silica glass of twisting, and this ensure that and fit tightly between layers, special loop bonding line can not be cut because of the hard of metal in the process of making, and also can bear scorching of the high temperature being up to degree more than 1000 on the other hand; Secondly also solve the cotton diameter of glass and length trickle, the problem of intensity difference.
Above-mentioned high temperature resistant acoustical absorption heat preserving felt globality is very good, and surperficial felt surfacing fiber dispersion is even, good hand touch, and gas permeability is strong, the features such as resin impregnated speed is fast.Its good any complex-shaped product of volt mould sexual compatibility and molded article surface, can cover woven design, improves surface smoothness and leakproof, strengthens interlaminar shear strength and surface toughness simultaneously, improves corrosion resistance and the weather resisteant of product.Product has fabulous operability, and designability, and intermediate layer is that mineral wool has and well attracts insulation effect.Glass cotton and top layer aluminium foil, surperficial felt/short combination of cutting felt makes the mechanical and physical performances such as the shock resistance of end article and hot strength greatly improve.Glass cotton has loose porous, nonhygroscopic characteristic, sound insulation, heat insulation effect; The aluminium-foil paper light weight of specific coatings is soft, easily moulding feature; High silica glass line is high temperature resistant, during loop bonding, and not easily broken characteristic.
The present invention also discloses a kind of processing technology of high temperature resistant acoustical absorption heat preserving felt, comprise the steps: that the upper and lower to be sprawled or chopped device is short cuts by spreading yarn feeding device, intermediate layer is directly unreeled by unwinding device, three are stackedly added together, enter loop bonding device, by high speed loop bonding operation, be combined into an entirety.
Above-mentioned processing technology adopts reinforced needle plate, nook closing member, loop bonding line adopts the resistant to elevated temperatures high silica glass of twisting, this ensure that and fit tightly between layers, special loop bonding line can not be cut because of the hard of metal in the process of making, and also can bear scorching of the high temperature being up to degree more than 1000 on the other hand; Secondly also solve the cotton diameter of glass and length trickle, the problem of intensity difference; Individual layer glass cotton is the brute force without any direction, after increasing aluminium foil, goods are made to be provided with the characteristic of metal, the felt being easy to be formed after machine-shaping makes compound has larger intensity and makes this product be widely used in construction wall, heating and ventilating equipment, communications and transportation, pipeline, and domestic and international market demand is large.
Above-described embodiment is one of the present invention preferably scheme, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.

Claims (3)

1. a high temperature resistant acoustical absorption heat preserving felt, it is characterized in that, it comprises three-decker, and it at the middle and upper levels, lower floor is aluminium foil respectively, shortly cuts felt or surperficial felt, and intermediate layer is that glass is cotton, and this three-decker is formed through loop bonding by high silica glass line.
2. the high temperature resistant acoustical absorption heat preserving felt of one according to claim 1, is characterized in that, described loop bonding line adopts the resistant to elevated temperatures high silica glass of twisting.
3. the processing technology of the high temperature resistant acoustical absorption heat preserving felt described in a claim 1-2, it is characterized in that, comprise the steps: that the upper and lower to be sprawled or chopped device is short cuts by spreading yarn feeding device, intermediate layer is directly unreeled by unwinding device, three are stackedly added together, enter loop bonding device, by high speed loop bonding operation, be combined into an entirety.
CN201510814768.7A 2015-11-23 2015-11-23 High temperature resistant sound-absorbing insulation felt and processing technology thereof Pending CN105459504A (en)

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CN201510814768.7A CN105459504A (en) 2015-11-23 2015-11-23 High temperature resistant sound-absorbing insulation felt and processing technology thereof

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Application Number Priority Date Filing Date Title
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Publications (1)

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CN105459504A true CN105459504A (en) 2016-04-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538316A (en) * 2018-11-23 2019-03-29 中国航发沈阳黎明航空发动机有限责任公司 A kind of high silicon oxygen thermal insulation layer of circular ring shape and its heat-insulating method of the rear housing covering for engine abnormal shape
CN110757903A (en) * 2019-09-23 2020-02-07 苏州市君悦新材料科技股份有限公司 Nano flame-retardant sound-insulation heat-insulation plate for aviation and membrane material
CN112848560A (en) * 2021-01-14 2021-05-28 云南智仁节能环保工程有限公司 Recyclable regenerated composite high-temperature-resistant heat-preservation felt and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201483839U (en) * 2009-07-30 2010-05-26 浙江联洋复合材料有限公司 Glass fiber and polyester non-woven fabric compound knitted chopped strand mat
CN201483838U (en) * 2009-07-30 2010-05-26 浙江联洋复合材料有限公司 Sandwich composite mat with high-strength continuous strand mat
CN201931664U (en) * 2010-12-25 2011-08-17 浙江联洋复合材料有限公司 Flame-retardant aluminium foil glass fiber fabric
CN203077733U (en) * 2012-09-29 2013-07-24 南京百朋纺织材料有限公司 Double-layer three-dimensional glass fiber fabric reinforced composite plate
CN203919886U (en) * 2014-05-26 2014-11-05 浙江联洋新材料股份有限公司 A kind of woven roving composite felt of sticking with paste technique for hand

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201483839U (en) * 2009-07-30 2010-05-26 浙江联洋复合材料有限公司 Glass fiber and polyester non-woven fabric compound knitted chopped strand mat
CN201483838U (en) * 2009-07-30 2010-05-26 浙江联洋复合材料有限公司 Sandwich composite mat with high-strength continuous strand mat
CN201931664U (en) * 2010-12-25 2011-08-17 浙江联洋复合材料有限公司 Flame-retardant aluminium foil glass fiber fabric
CN203077733U (en) * 2012-09-29 2013-07-24 南京百朋纺织材料有限公司 Double-layer three-dimensional glass fiber fabric reinforced composite plate
CN203919886U (en) * 2014-05-26 2014-11-05 浙江联洋新材料股份有限公司 A kind of woven roving composite felt of sticking with paste technique for hand

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538316A (en) * 2018-11-23 2019-03-29 中国航发沈阳黎明航空发动机有限责任公司 A kind of high silicon oxygen thermal insulation layer of circular ring shape and its heat-insulating method of the rear housing covering for engine abnormal shape
CN110757903A (en) * 2019-09-23 2020-02-07 苏州市君悦新材料科技股份有限公司 Nano flame-retardant sound-insulation heat-insulation plate for aviation and membrane material
CN112848560A (en) * 2021-01-14 2021-05-28 云南智仁节能环保工程有限公司 Recyclable regenerated composite high-temperature-resistant heat-preservation felt and preparation method thereof

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Application publication date: 20160406