CN108164854A - A kind of building acoustic material of environment-friendly light - Google Patents

A kind of building acoustic material of environment-friendly light Download PDF

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Publication number
CN108164854A
CN108164854A CN201810092420.5A CN201810092420A CN108164854A CN 108164854 A CN108164854 A CN 108164854A CN 201810092420 A CN201810092420 A CN 201810092420A CN 108164854 A CN108164854 A CN 108164854A
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parts
agent
acoustic material
polyethylene
environment
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CN201810092420.5A
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Chinese (zh)
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韩霞
侯盛楠
杨昆
杨莉
蒋桂芝
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Shangqiu Polytechnic
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Shangqiu Polytechnic
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • C08J9/0071—Nanosized fillers, i.e. having at least one dimension below 100 nanometers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0085—Use of fibrous compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2427/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/10—Silicon-containing compounds
    • C08K7/12—Asbestos
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/22—Expanded, porous or hollow particles
    • C08K7/24—Expanded, porous or hollow particles inorganic

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Finishing Walls (AREA)

Abstract

The invention discloses a kind of building acoustic materials of environment-friendly light, are prepared from the following raw materials in parts by weight：0.3 0.6 parts of 10 20 parts of flyash, 5 12 parts of bastard coal mountain flour, 5 10 parts of asbestos wool, 7 15 parts of ceramic microspheres, 57 parts of thermoplastic phenol resin, 26 parts of ethylene propylene diene rubber, 59 parts of polyvinyl chloride resin, 5 11 parts of polyethylene, 14 parts of plasticizer, 13 parts of binding agent, 25 parts of waterproofing agent, 6 10 parts of nano carbon black, 9 11 parts of polystyrene foam plastics and foaming agent；Its internal ceramic microspheres has reflection and scattering process to sound wave, effectively reduce noise, and addition asbestos wool, thermoplastic phenol resin, ethylene propylene diene rubber, polyvinyl chloride resin, polyethylene and polystyrene foam plastics further enhance reflection and the scattering power to sound wave wherein, so that this building acoustic material is light-weight, is easily installed, with good environment protecting, suitable for building etc., noise reduction is lasting, does not pollute indoor environment.

Description

A kind of building acoustic material of environment-friendly light
Technical field
The present invention relates to building material field, the building acoustic material of specifically a kind of environment-friendly light.
Background technology
Acoustic material refers to the isolation of noise, partition, a kind of material, component or the structure detached propagated in air.It is right In sound insulating material, to weaken transmission acoustic energy, stop the propagation of sound, it cannot be porous as sound-absorbing material, loose, saturating Gas, its material should be heavy and closely knit on the contrary, such as a kind of material of steel plate, stereotype, brick wall.The requirement of sound insulating material material It is closely knit imporosity or gap；There is larger weight.Since this kind of sound insulating material is closely knit, it is difficult to absorb and be reflected through acoustic energy Can be strong, so its sound absorbing performance is poor.
Currently, noise has become a kind of main environmental pollution, and especially the acoustic environment of building is increasingly by people Concern and attention, therefore, it is necessary to it is existing building acoustic material be improved, with enhance its sound-absorbing, sound insulation processing effect Fruit, to weaken transmission acoustic energy, stop the propagation of sound, and be improved in the environmental protection of material and quality, to reach a kind of The building acoustic material of environment-friendly light meets the protection demand of building acoustic environment.
Invention content
The purpose of the present invention is to provide a kind of building acoustic material of environment-friendly light, to solve to carry in above-mentioned background technology The problem of going out.
To achieve the above object, the present invention provides following technical solution：
A kind of building acoustic material of environment-friendly light, including：Flyash, bastard coal mountain flour, asbestos wool, ceramic microspheres, thermoplastic Property phenolic resin, ethylene propylene diene rubber, polyvinyl chloride resin, polyethylene, plasticizer, binding agent, waterproofing agent, nano carbon black, polystyrene Foamed plastics and foaming agent, the building acoustic material is calculated according to mass percent, including parts by weight once：Flyash 10- 20 parts, 5-12 parts of bastard coal mountain flour, 5-10 parts of asbestos wool, 7-15 parts of ceramic microspheres, 5-7 parts of thermoplastic phenol resin, ternary 2-6 parts of EP rubbers, 5-9 parts of polyvinyl chloride resin, 5-11 parts of polyethylene, 1-4 parts of plasticizer, 1-3 parts of binding agent, 2-5 parts of waterproofing agent, 0.3-0.6 parts of 6-10 parts of nano carbon black, 9-11 parts of polystyrene foam plastics and foaming agent.
As further embodiment of the present invention：The building acoustic material is calculated according to mass percent, including once weighing Measure part：15 parts of flyash, 7 parts of bastard coal mountain flour, 8 parts of asbestos wool, 10 parts of ceramic microspheres, 5 parts of thermoplastic phenol resin, ternary 3 parts of EP rubbers, 7 parts of polyethylene, 2 parts of plasticizer, 2 parts of binding agent, 3 parts of waterproofing agent, 8 parts of nano carbon black, gathers 6 parts of polyvinyl chloride resin 0.4 part of 10 parts of styrofoam and foaming agent.
As further scheme of the invention：The building acoustic material is calculated according to mass percent, including once Parts by weight：18 parts of flyash, 11 parts of bastard coal mountain flour, 9 parts of asbestos wool, 13 parts of ceramic microspheres, 7 parts of thermoplastic phenol resin, 5 parts of ethylene propylene diene rubber, 8 parts of polyvinyl chloride resin, 10 parts of polyethylene, 3 parts of plasticizer, 2.5 parts of binding agent, 4 parts of waterproofing agent, Nano carbon 0.5 part of black 8 parts, 10.5 parts of polystyrene foam plastics and foaming agent.
As further scheme of the invention：The building acoustic material is calculated according to mass percent, including once Parts by weight：20 parts of flyash, 12 parts of bastard coal mountain flour, 10 parts of asbestos wool, 15 parts of ceramic microspheres, 7 parts of thermoplastic phenol resin, 6 parts of ethylene propylene diene rubber, 9 parts of polyvinyl chloride resin, 11 parts of polyethylene, 4 parts of plasticizer, 3 parts of binding agent, 5 parts of waterproofing agent, nano carbon black 0.6 part of 10 parts, 11 parts of polystyrene foam plastics and foaming agent.
Compared with prior art, the beneficial effects of the invention are as follows：Flyash, bastard coal mountain flour, asbestos wool, hollow ceramic are micro- Ball, thermoplastic phenol resin, ethylene propylene diene rubber, polyvinyl chloride resin, polyethylene, plasticizer, binding agent, waterproofing agent, nano carbon black, Polystyrene foam plastics and foaming agent
A kind of building acoustic material of environment-friendly light, internal ceramic microspheres have reflection and scattering to sound wave Effect, hollow structure in the ball of ceramic microspheres more can long-term holding so that material of the invention has very high Sound-absorbing sound insulation capabilities, effectively reduce noise, and add in wherein asbestos wool, thermoplastic phenol resin, ethylene propylene diene rubber, Polyvinyl chloride resin, polyethylene and polystyrene foam plastics further enhance the reflection and scattering power to sound wave so that the building every Sound material weight is light, is easily installed, and has good environment protecting, and suitable for building etc., noise reduction is lasting, does not pollute Indoor environment.
Specific embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation Example is only the part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common All other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects It encloses.
Embodiment 1
A kind of building acoustic material of environment-friendly light, including：Flyash, bastard coal mountain flour, asbestos wool, ceramic microspheres, thermoplastic Property phenolic resin, ethylene propylene diene rubber, polyvinyl chloride resin, polyethylene, plasticizer, binding agent, waterproofing agent, nano carbon black, polystyrene Foamed plastics and foaming agent, are prepared from the following raw materials in parts by weight：
15 parts of flyash, 7 parts of bastard coal mountain flour, 8 parts of asbestos wool, 10 parts of ceramic microspheres, 5 parts of thermoplastic phenol resin, ternary 3 parts of EP rubbers, 7 parts of polyethylene, 2 parts of plasticizer, 2 parts of binding agent, 3 parts of waterproofing agent, 8 parts of nano carbon black, gathers 6 parts of polyvinyl chloride resin 0.4 part of 10 parts of styrofoam and foaming agent.
Embodiment 2
A kind of building acoustic material of environment-friendly light, including：Flyash, bastard coal mountain flour, asbestos wool, ceramic microspheres, thermoplastic Property phenolic resin, ethylene propylene diene rubber, polyvinyl chloride resin, polyethylene, plasticizer, binding agent, waterproofing agent, nano carbon black, polystyrene Foamed plastics and foaming agent, are prepared from the following raw materials in parts by weight：
18 parts of flyash, 11 parts of bastard coal mountain flour, 9 parts of asbestos wool, 13 parts of ceramic microspheres, 7 parts of thermoplastic phenol resin, ternary 5 parts of EP rubbers, 8 parts of polyvinyl chloride resin, 10 parts of polyethylene, 3 parts of plasticizer, 2.5 parts of binding agent, 4 parts of waterproofing agent, nano carbon black 8 0.5 part of part, 10.5 parts of polystyrene foam plastics and foaming agent.
Embodiment 3
A kind of building acoustic material of environment-friendly light, including：Flyash, bastard coal mountain flour, asbestos wool, ceramic microspheres, thermoplastic Property phenolic resin, ethylene propylene diene rubber, polyvinyl chloride resin, polyethylene, plasticizer, binding agent, waterproofing agent, nano carbon black, polystyrene Foamed plastics and foaming agent, are prepared from the following raw materials in parts by weight：
20 parts of flyash, 12 parts of bastard coal mountain flour, 10 parts of asbestos wool, 15 parts of ceramic microspheres, 7 parts of thermoplastic phenol resin, three First 6 parts of EP rubbers, 9 parts of polyvinyl chloride resin, 11 parts of polyethylene, 4 parts of plasticizer, 3 parts of binding agent, 5 parts of waterproofing agent, nano carbon black 10 0.6 part of part, 11 parts of polystyrene foam plastics and foaming agent.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party Formula, can also be under the premise of this patent objective not be departed from the knowledge that one skilled in the relevant art has It makes a variety of changes.

Claims (4)

1. a kind of building acoustic material of environment-friendly light, which is characterized in that including：It is flyash, bastard coal mountain flour, asbestos wool, hollow Ceramic microsphere, thermoplastic phenol resin, ethylene propylene diene rubber, polyvinyl chloride resin, polyethylene, plasticizer, binding agent, waterproofing agent, nanometer Carbon black, polystyrene foam plastics and foaming agent, the building acoustic material is calculated according to mass percent, including weight once Part：10-20 parts of flyash, 5-12 parts of bastard coal mountain flour, 5-10 parts of asbestos wool, 7-15 parts of ceramic microspheres, thermoplastic phenol tree 5-7 parts of fat, 2-6 parts of ethylene propylene diene rubber, 5-9 parts of polyvinyl chloride resin, 5-11 parts of polyethylene, 1-4 parts of plasticizer, 1-3 parts of binding agent, 0.3-0.6 parts of 2-5 parts of waterproofing agent, 6-10 parts of nano carbon black, 9-11 parts of polystyrene foam plastics and foaming agent.
2. the building acoustic material of environment-friendly light according to claim 1, which is characterized in that the building acoustic material is pressed It is calculated according to mass percent, including parts by weight once：15 parts of flyash, 7 parts of bastard coal mountain flour, 8 parts of asbestos wool, ceramic microspheres 10 parts, 5 parts of thermoplastic phenol resin, 3 parts of ethylene propylene diene rubber, 6 parts of polyvinyl chloride resin, 7 parts of polyethylene, 2 parts of plasticizer, binding agent 2 Part, 3 parts of waterproofing agent, 8 parts of nano carbon black, 10 parts of polystyrene foam plastics and 0.4 part of foaming agent.
3. the building acoustic material of environment-friendly light according to claim 1, which is characterized in that the building acoustic material is pressed It is calculated according to mass percent, including parts by weight once：18 parts of flyash, 11 parts of bastard coal mountain flour, 9 parts of asbestos wool, hollow ceramic are micro- 13 parts of ball, 5 parts of ethylene propylene diene rubber, 8 parts of polyvinyl chloride resin, 10 parts of polyethylene, 3 parts of plasticizer, bonds 7 parts of thermoplastic phenol resin 0.5 part of 2.5 parts of agent, 4 parts of waterproofing agent, 8 parts of nano carbon black, 10.5 parts of polystyrene foam plastics and foaming agent.
4. the building acoustic material of environment-friendly light according to claim 1, which is characterized in that the building acoustic material is pressed It is calculated according to mass percent, including parts by weight once：20 parts of flyash, 12 parts of bastard coal mountain flour, 10 parts of asbestos wool, hollow ceramic are micro- 15 parts of ball, 6 parts of ethylene propylene diene rubber, 9 parts of polyvinyl chloride resin, 11 parts of polyethylene, 4 parts of plasticizer, bonds 7 parts of thermoplastic phenol resin 0.6 part of 3 parts of agent, 5 parts of waterproofing agent, 10 parts of nano carbon black, 11 parts of polystyrene foam plastics and foaming agent.
CN201810092420.5A 2018-01-31 2018-01-31 A kind of building acoustic material of environment-friendly light Pending CN108164854A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109265079A (en) * 2018-11-09 2019-01-25 河南建筑材料研究设计院有限责任公司 A kind of energy-saving environmentally friendly indoor building material
CN111253600A (en) * 2020-03-19 2020-06-09 江苏朗悦新材料科技有限公司 Environment-friendly sheet and preparation method thereof
CN114835966A (en) * 2022-06-02 2022-08-02 南京中远高分子材料科技有限公司 Ultralow frequency soundproof cotton, production process thereof and production detection device

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Publication number Priority date Publication date Assignee Title
CN104845036A (en) * 2015-06-09 2015-08-19 李平兰 Decorating interior sound insulation material
CN106751220A (en) * 2016-12-30 2017-05-31 吴中区穹窿山德毅新材料技术研究所 A kind of decoration interior trim environmental protection acoustic material for building
CN107383842A (en) * 2017-08-01 2017-11-24 合肥欧仕嘉机电设备有限公司 A kind of sound-absorbing building panel material and preparation method thereof
CN107474536A (en) * 2017-08-23 2017-12-15 安徽智博新材料科技有限公司 A kind of construction and decoration light flame-retardant acoustic material

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Publication number Priority date Publication date Assignee Title
CN104845036A (en) * 2015-06-09 2015-08-19 李平兰 Decorating interior sound insulation material
CN106751220A (en) * 2016-12-30 2017-05-31 吴中区穹窿山德毅新材料技术研究所 A kind of decoration interior trim environmental protection acoustic material for building
CN107383842A (en) * 2017-08-01 2017-11-24 合肥欧仕嘉机电设备有限公司 A kind of sound-absorbing building panel material and preparation method thereof
CN107474536A (en) * 2017-08-23 2017-12-15 安徽智博新材料科技有限公司 A kind of construction and decoration light flame-retardant acoustic material

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109265079A (en) * 2018-11-09 2019-01-25 河南建筑材料研究设计院有限责任公司 A kind of energy-saving environmentally friendly indoor building material
CN111253600A (en) * 2020-03-19 2020-06-09 江苏朗悦新材料科技有限公司 Environment-friendly sheet and preparation method thereof
CN114835966A (en) * 2022-06-02 2022-08-02 南京中远高分子材料科技有限公司 Ultralow frequency soundproof cotton, production process thereof and production detection device
CN114835966B (en) * 2022-06-02 2024-02-06 南京中远高分子材料科技有限公司 Ultralow-frequency soundproof cotton, production process thereof and production detection device

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Application publication date: 20180615