CN106009609B - A kind of flexibility sound insulation composite material and preparation method thereof - Google Patents
A kind of flexibility sound insulation composite material and preparation method thereof Download PDFInfo
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- CN106009609B CN106009609B CN201610351284.8A CN201610351284A CN106009609B CN 106009609 B CN106009609 B CN 106009609B CN 201610351284 A CN201610351284 A CN 201610351284A CN 106009609 B CN106009609 B CN 106009609B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The present invention provides a kind of flexible sound insulation composite material, the structure of the composite material is mainly made of the flexible back bone of high density granular object, the thermoplastic material of viscoelasticity and flexible and stretch-proof and failure by shear；Composite material prepared by the present invention has the good excellent characteristics of high intensity, high density, fire-retardant, asepsis environment-protecting, corrosion-resistant and sound insulation effect, it can be widely applied to highway communication, urban track traffic, mechanical equipment, the industries such as building construction, ship, home decoration and industrial goods packaging；In addition, the present invention also provides the preparation methods of the flexibility sound insulation composite material, decomposition and the molecular migration of material are reduced by strict control extrusion temperature and later period heating temperature, it is low to obtain smell, VOC volatile matter is low, volatilizable object is low, and the excellent sheet material of mechanical performance index of product, is a kind of environment friendly material.
Description
Technical field
The present invention relates to a kind of materials and preparation method thereof, belong to sound insulation field of new materials, and in particular to it is a kind of it is flexible every
Sound composite material and preparation method.
Background technique
In recent years, with the lasting propulsion of Urbanization in China, for building for the infrastructure such as road traffic and real estate
And if the manufacturing development such as automobile, steamer, aircraft, equipment provides fabulous opportunity to develop, while because construction, traffic,
The brings noise problems such as building, equipment operation also become increasingly conspicuous, to the body for the personnel and surrounding resident for being engaged in these work
Heart health causes to seriously endanger.
Flexible sound-proof materials do not occur resonance with easy to use, low frequency, high frequency does not occur the main feature of coincidence effect,
It is had obtained relatively broad application in noise control engineering, but that there is also sound-insulation capabilities is insufficient, intensity is lower, weatherability is poor, ring
The problems such as guaranteed cost is poor leads to that its using effect is bad, the service life is shorter or brings the secondary pollution to environment, and main cause is
The material mixture ratio and manufacturing method used due to it is improper to be caused, and domestic many experts and scholars explore and it is desirable that open making great efforts
Hair produces high performance sound insulation composite material.
It is filling that Chinese patent CN1421845A, CN1424350A, which just once disclosed one kind by matrix, metal powder of PVC,
The high density sound insulation composite material of object；Chinese patent CN101735530B also discloses one kind using PVC and CPVC as matrix, with iron
Powder is the sound insulation composite material of filler；Chinese patent CN1937031B also disclose it is a kind of using thermoplastic resin membrane and
General fibre cotton or polyurethane foam plastics carry out sound insulation polymer composite hot compound and being made；Chinese patent
CN102816378 A also discloses one kind using PP as matrix, and barium sulfate and talcum powder are that the middle-high density of filler insulates against sound macromolecule
Composite material；103044803 A of Chinese patent CN also disclose one kind using basalt fibre as matrix, and utilize thermoplastic PVC
The sound insulation polymer composite that bonding agent heat is combined.But currently, density, the mechanical property of domestic and international sound insulating material, resist
Heat ageing, sound insulation property and environmental-protecting performance can't fully meet various technical needs, for this purpose, designer of the invention
In view of the above problem, by concentrating on studies and test of many times, the experience of comprehensive long campaigns related work, researching and designing go out one
Kind of mechanical property is excellent, long service life, high, environmental-friendly, recoverable the flexible sound insulation composite material of sound insulation property and its
Succinct preparation method, has a very important significance.
Summary of the invention
It is an object of the invention in place of overcome the deficiencies in the prior art, provide a kind of high density, high intensity, sound insulation property
Excellent environment-friendly type flexibility sound insulation composite material and preparation method thereof.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of flexibility sound insulation composite material, the structure of the composite material is mainly by high density granular object, the thermoplastic of viscoelasticity
The flexible back bone of property material and flexible and stretch-proof and failure by shear is constituted；The preparation method of the composite material includes such as
Lower step:
(1) 50~80 parts of high density granular object is weighed, is heated in 1~2 part of coupling agent investment high-speed mixer
Activation, 70-110 DEG C of premix temperature, do time 2-8min in advance, and revolving speed 400-600 turns/min；
(2) by the thermoplastic material of 5~20 parts of viscoelasticity, 30~50 parts of flexible back bone, 5~20 parts of plasticizer,
0.5~1.5 part of antioxidant, 6~12 parts of fire retardant, which is added in high speed machine, to be mixed, and further heating premix is uniform, premix temperature
80-120 DEG C of degree, do time 2-8min in advance, and revolving speed 200-400 turns/min；
(3) by the raw material of step (2), further negative pressure is premixed in a high speed mixer, and the temperature of negative pressure premix maintains
80-120 DEG C, the 2-8min that holds time of negative pressure premix, the vacuum degree -0.02Mpa~-0.04MPa, revolving speed 200- of negative pressure premix
400 turns/min, negative pressure is released after premix；
(4) step (3) treated raw material is continuously squeezed out by the forced feed of bi-conical feed machine into extruder
In flakes, 130-170 DEG C of the temperature of the material charging region of the extrusion screw rod of extruder, the temperature of the fluxing zone of the extrusion screw rod of extruder
80-220 DEG C, 160-200 DEG C of the temperature of the homogenization zone of the extrusion screw rod of extruder, the revolving speed 50-300 of the extrusion screw rod of extruder
Turn/min, residence time of the raw material in the extrusion screw rod of extruder is less than 200s.
Optimization, a kind of above-mentioned flexible sound insulation composite material, the high density granular object is selected from aluminium oxide, vulcanization
One of lead, lead iodide, barium sulfate, ceruse, calcium carbonate, boric acid thorium, strontium carbonate, vermiculite power, mica powder are a variety of,
Granule density is not less than 2000kg/m3, and granularity is not less than 50 mesh, and distribution density in the composite is not less than 1500kg/m3.
Optimization, a kind of above-mentioned flexible sound insulation composite material, the thermoplastic material of the viscoelasticity is selected from natural rubber
Glue, synthetic rubber, nitrile rubber, polyvinyl chloride, polyisobutene, polysulfide, polyurethane, polyvinyl butyral, polyethylene
One of acetate ethylene copolymer, butadiene-propylene nitrile rubber are a variety of.
Optimization, a kind of above-mentioned flexible sound insulation composite material, the flexible back bone is flexible fiber, and preferably polyurethane is fine
Peacekeeping aramid fiber.
Optimization, a kind of above-mentioned flexible sound insulation composite material, the plasticizer is selected from tributyl citrate, lemon
One of triethylenetetraminehexaacetic acid ester, tributyl 2-acetylcitrate, trimethylbenzene lipoprotein of phosphoric acid, phthalandione dibutyl ester, phthalandione dibutylester are a variety of.
Optimization, a kind of above-mentioned flexible sound insulation composite material, the coupling agent is selected from silane coupling agent, titanate esters
One of coupling agent or aluminate coupling agent are a variety of.
Optimization, a kind of above-mentioned flexible sound insulation composite material, the fire retardant be selected from antimony oxide, zinc borate,
One of three (nonylated phenyl) phosphite esters.
Optimization, a kind of above-mentioned flexible sound insulation composite material, the antioxidant is selected from 2,6- three-level butyl -4- methyl
Phenol, bis- (3,5- three-level butyl -4- hydroxy phenyl) thioethers, four (Β-(3,5- three-level butyl -4- hydroxy phenyl) propionic acid) seasons penta
One or more of four alcohol esters, three (2,4- di-tert-butyl-phenyl) phosphite esters.
Flexibility sound insulation composite material of the present invention, requires, sound insulating material can have not according to the difference of usage
Same thickness and different density.
The invention has the benefit that
(1) present invention mainly by high density granular object, the thermoplastic material of viscoelasticity and flexible and stretch-proof and is cut
It cuts through bad flexible back bone to be constituted, by the raw material for adding plasticizer, coupling agent, antioxidant, fire retardant during the preparation process
Ingredient, various raw materials are used in conjunction with each other, and by optimizing constituent content, have the composite material of preparation
High intensity, high density, fire-retardant, asepsis environment-protecting, corrosion-resistant and sound insulation effect good excellent characteristics.
(2) flexible sound insulation composite material of the present invention is environment-friendly type, pollution-free, meets " three proofings " requirement used: anti-
Fire, waterproof, gas defence, non-ignitable and high temperature resistant, used 10 years at 240 DEG C or more, the service life organic high temperature of industry above all
Fiber.At 280 DEG C, by 120h, mechanical strength still keeps original 70%, and the short time is exposed in 320 DEG C of high temperature also not
Can shrink, embrittlement, softening or melting.Its material just starts to be carbonized at 750 DEG C of high temperature, and when burning does not have dropping generation,
High-temp combustion can be with self-extinguishment from fiery 1-2s.
(3) after tested, the mean transmission loss under room temperature is in 25-35dB, tension for flexible sound insulation composite material of the present invention
Intensity is 85-110MPa, bending strength 370-420Mpa；Room temperature surface density is 3.0-5.Okg/m2；With preferable sound insulation,
Heat-proof quality, the contraction of material with distort that relatively small, dimensional stability is high, processability is good；Its performance obviously reaches at present
There is the performance of fiber-reinforced resin base sound insulation composite material, can be widely applied to highway communication, urban track traffic, machinery is set
Standby, the industries such as building construction, ship, home decoration and industrial goods packaging are early to substitute similar glass fiber compound material etc.
Phase sound insulating material.
(4) in preparation process of the invention, negative pressure premixing process is used before extrusion, passes through small point of negative pressure exclusive segment
Subclass substance, premixing process ensure that the dispersing uniformity of formula materials.It is heated by strict control extrusion temperature and later period
Temperature reduces decomposition and the molecular migration of material, obtains that smell is low, and VOC volatile matter is low, volatilizable object is low, and the mechanical property of product
The excellent sheet material of energy index, is a kind of environment friendly material.
Detailed description of the invention
Fig. 1 is the structure design diagram of the flexible sound insulation composite material of the present invention.
In figure, 1, particle；2, viscoelasticity thermoplastic material；3, flexible back bone layer.
Specific embodiment
Embodiment 1
A kind of flexibility sound insulation composite material, the preparation method of the composite material include the following steps:
(1) 60 parts of barium sulfate is weighed, carries out heat-activated in 2 parts of silane coupling agent investment high-speed mixer, in advance
Mixed 90 DEG C of temperature, do time 6min in advance, 500 turns/min of revolving speed；
(2) by 10 parts of butadiene-propylene nitrile rubber, 40 parts of polyurethane fiber, 10 parts of tributyl citrate, 1 part
2,6- three-level butyl -4- methylphenol, 8 parts of zinc borate is added in high speed machine and mixes, further heating premix uniformly, premix
90 DEG C of temperature, do time 6min in advance, 300 turns/min of revolving speed；
(3) by the raw material of step (2), further negative pressure is premixed in a high speed mixer, and the temperature of negative pressure premix maintains 90
DEG C, the 5min that holds time of negative pressure premix, vacuum degree -0.03Mpa, the 300 turns/min of revolving speed of negative pressure premix are solved after premix
Except negative pressure；
(4) step (3) treated raw material is continuously squeezed out by the forced feed of bi-conical feed machine into extruder
In flakes, 150 DEG C of the temperature of the material charging region of the extrusion screw rod of extruder, 120 DEG C of the temperature of the fluxing zone of the extrusion screw rod of extruder,
180 DEG C of the temperature of the homogenization zone of the extrusion screw rod of extruder, the 130 turns/min of revolving speed of the extrusion screw rod of extruder, raw material are squeezing
The residence time in the extrusion screw rod of machine is less than 200s out.
Embodiment 2
A kind of flexibility sound insulation composite material, the preparation method of the composite material include the following steps:
(1) weigh 40 parts of calcium carbonate, 30 parts of boric acid thorium, in 1 part of titanate coupling agent investment high-speed mixer into
Row heat-activated, 100 DEG C of premix temperature, do time 5min in advance, 450 turns/min of revolving speed；
(2) by 12 parts of polyvinyl chloride, 42 parts of aramid fiber, 13 parts of trimethylbenzene lipoprotein of phosphoric acid, bis- (the 3,5- of 1.1 parts
Three-level butyl -4- hydroxy phenyl) thioether, 9 parts of three (nonylated phenyl) phosphite esters are added in high speed machine and mix, further plus
Warm premixing is uniform, and 100 DEG C of premix temperature, do time 4min in advance, 280 turns/min of revolving speed；
(3) by the raw material of step (2), further negative pressure is premixed in a high speed mixer, and the temperature of negative pressure premix maintains 88
DEG C, the 7min that holds time of negative pressure premix, vacuum degree -0.04MPa, the 330 turns/min of revolving speed of negative pressure premix are solved after premix
Except negative pressure；
(4) step (3) treated raw material is continuously squeezed out by the forced feed of bi-conical feed machine into extruder
In flakes, 140 DEG C of the temperature of the material charging region of the extrusion screw rod of extruder, 150 DEG C of the temperature of the fluxing zone of the extrusion screw rod of extruder,
170 DEG C of the temperature of the homogenization zone of the extrusion screw rod of extruder, the 200 turns/min of revolving speed of the extrusion screw rod of extruder, raw material are squeezing
The residence time in the extrusion screw rod of machine is less than 200s out.
Embodiment 3
A kind of flexibility sound insulation composite material, the preparation method of the composite material include the following steps:
(1) weigh 40 parts of strontium carbonate, 40 parts of vermiculite power, in 2 parts of aluminate coupling agent investment high-speed mixer into
Row heat-activated, 110 DEG C of premix temperature, do time 8min in advance, 600 turns/min of revolving speed；
(2) by 20 parts of natural rubber, 50 parts of aramid fiber, 20 parts of tributyl 2-acetylcitrate, the four of 0.8 part
(Β-(3,5- three-level butyl -4- hydroxy phenyl) propionic acid) pentaerythritol ester, 12 parts of antimony oxide, which is added in high speed machine, to be mixed
It closes, further uniformly, 120 DEG C of premix temperature, do time heating premix 8min in advance, 400 turns/min of revolving speed；
(3) by the raw material of step (2), further negative pressure is premixed in a high speed mixer, and the temperature of negative pressure premix maintains
120 DEG C, the 8min that holds time of negative pressure premix, the vacuum degree -0.04MPa of negative pressure premix, 400 turns/min of revolving speed, premix terminates
After release negative pressure；
(4) step (3) treated raw material is continuously squeezed out by the forced feed of bi-conical feed machine into extruder
In flakes, 170 DEG C of the temperature of the material charging region of the extrusion screw rod of extruder, 220 DEG C of the temperature of the fluxing zone of the extrusion screw rod of extruder,
200 DEG C of the temperature of the homogenization zone of the extrusion screw rod of extruder, the 300 turns/min of revolving speed of the extrusion screw rod of extruder, raw material are squeezing
The residence time in the extrusion screw rod of machine is less than 200s out.
Embodiment 4
A kind of flexibility sound insulation composite material, the preparation method of the composite material include the following steps:
(1) weigh 25 parts of aluminium oxide, 25 parts of vulcanized lead, in 1 part of silane coupling agent investment high-speed mixer into
Row heat-activated, 70 DEG C of premix temperature, do time 2min in advance, 400 turns/min of revolving speed；
(2) by 12 parts of polyvinyl acetate ethylene copolymer, 30 parts of polyurethane fiber, 8 parts of phthalandione dibutyl ester, 1 part
Three (2,4- di-tert-butyl-phenyl) phosphite esters, 6 parts of zinc borate is added in high speed machine and mixes, and further heating is mixed in advance
Even, 80 DEG C of premix temperature, do time 2min in advance, 200 turns/min of revolving speed；
(3) by the raw material of step (2), further negative pressure is premixed in a high speed mixer, and the temperature of negative pressure premix maintains 80
DEG C, the 2min that holds time of negative pressure premix, vacuum degree -0.02MPa, the 200 turns/min of revolving speed of negative pressure premix are solved after premix
Except negative pressure；
(4) step (3) treated raw material is continuously squeezed out by the forced feed of bi-conical feed machine into extruder
In flakes, 130 DEG C of the temperature of the material charging region of the extrusion screw rod of extruder, 80 DEG C of the temperature of the fluxing zone of the extrusion screw rod of extruder,
160 DEG C of the temperature of the homogenization zone of the extrusion screw rod of extruder, the 150 turns/min of revolving speed of the extrusion screw rod of extruder, raw material are squeezing
The residence time in the extrusion screw rod of machine is less than 200s out.
Using the structure as shown in Figure 1 of material made from above-described embodiment, mainly by high density granular, viscoelasticity thermoplasticity
Material and flexible and the flexible back bone of stretch-proof and failure by shear is formed, overall shape are panel or sheet type, can not only
Play the role of good sound insulation, and stretch-proof with higher and failure by shear ability.
When flexible back bone selection, the various flexible fibers etc. in above-described embodiment can also be replaced with steel wire, as long as easily
The material of bending and stretch-proof deformation.When processing, fiber or flexible finer wire are woven into latticed, the flexible bone of formation
Frame, the later solidified forming under certain temperature and pressure together.
Implement provided a kind of flexible sound insulation composite material and preparation method thereof to the invention above to have carried out in detail
Thin introduction creates the thought of embodiment for those of ordinary skill in the art according to the present invention, in specific embodiment and
There will be changes in application range, in conclusion the content of the present specification should not be construed as the limitation to the invention.
Claims (6)
1. a kind of flexibility sound insulation composite material, which is characterized in that the structure of the composite material is mainly by high density granular object, glutinous bullet
The flexible back bone of the thermoplastic material of property and flexible and stretch-proof and failure by shear is constituted；The preparation side of the composite material
Method includes the following steps:
(1) 50~80 parts of high density granular object is weighed, carries out heat-activated in 1~2 part of coupling agent investment high-speed mixer,
70-110 DEG C of premix temperature, do time 2-8min in advance, and revolving speed 400-600 turns/min；
(2) by the thermoplastic material of 5~20 parts of viscoelasticity, 30~50 parts of flexible back bone, 5~20 parts of plasticizer, 0.5~
1.5 parts of antioxidant, 6~12 parts of fire retardant, which is added in high speed machine, to be mixed, and further heating premix is uniform, premix temperature 80-
120 DEG C, do time 2-8min in advance, and revolving speed 200-400 turns/min；
(3) by the raw material of step (2), further negative pressure is premixed in a high speed mixer, and the temperature of negative pressure premix maintains 80-120
DEG C, the 2-8min that holds time of negative pressure premix, vacuum degree -0.02Mpa~-0.04MPa of negative pressure premix, revolving speed 200-400 turns/
Min releases negative pressure after premix；
(4) step (3) treated raw material is carried out continuously squeezing out into extruder by the forced feed of bi-conical feed machine it is in blocks,
130-170 DEG C of the temperature of the material charging region of the extrusion screw rod of extruder, the temperature 80-220 of the fluxing zone of the extrusion screw rod of extruder
DEG C, 160-200 DEG C of the temperature of the homogenization zone of the extrusion screw rod of extruder, the revolving speed 50-300 of the extrusion screw rod of extruder turns/
Min, residence time of the raw material in the extrusion screw rod of extruder are less than 200s
Wherein, the high density granular composition granule density is not less than 2000kg/m3, granularity is not less than 50 mesh, in the composite
Distribution density be not less than 1500kg/m3；The thermoplastic material of the viscoelasticity is selected from natural rubber, synthetic rubber, polychlorostyrene
Ethylene, polyisobutene, polysulfide, polyurethane, one of polyvinyl butyral, polyvinyl acetate ethylene copolymer or more
Kind；The flexible back bone is flexible fiber.
2. flexibility sound insulation composite material according to claim 1, which is characterized in that the high density granular object is selected from oxygen
Change aluminium, vulcanized lead, lead iodide, barium sulfate, ceruse, calcium carbonate, boric acid thorium, strontium carbonate, vermiculite power, one of mica powder or
It is a variety of.
3. flexibility sound insulation composite material according to claim 1, which is characterized in that the plasticizer is selected from citric acid
Tributyl, triethyl citrate, tributyl 2-acetylcitrate, trimethylbenzene lipoprotein of phosphoric acid, phthalandione dibutyl ester, one in phthalandione dibutylester
Kind is a variety of.
4. flexibility sound insulation composite material according to claim 1, which is characterized in that the coupling agent is selected from silanes idol
Join one of agent, titanate coupling agent or aluminate coupling agent or a variety of.
5. flexibility sound insulation composite material according to claim 3, which is characterized in that the fire retardant is selected from three oxidations two
One of antimony, zinc borate, three (nonylated phenyl) phosphite esters.
6. flexibility sound insulation composite material according to claim 3, which is characterized in that the antioxidant is selected from 2,6- bis- or three
Grade butyl -4- methylphenol, bis- (3,5- bis- three-level butyl -4- hydroxy phenyl) thioethers, four (Β-(3,5- bis- three-level butyl -4-
Hydroxy phenyl) propionic acid) pentaerythritol ester, one or more of three (2,4- di-tert-butyl-phenyl) phosphite esters.
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| CN110183842A (en) * | 2019-06-11 | 2019-08-30 | 哈尔滨通达工业环保自动化有限公司 | A kind of wide temperature range flame-proof environmental protection acoustic material and the preparation method and application thereof based on EVA modified polyurethane |
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|---|---|---|---|---|
| CN104629217A (en) * | 2015-02-14 | 2015-05-20 | 青岛科技大学 | Sound insulating material and preparation method thereof |
| CN104629218A (en) * | 2015-02-14 | 2015-05-20 | 青岛科技大学 | Sound insulation material, composite carpet using the material and preparation method thereof |
| CN105034509A (en) * | 2015-06-16 | 2015-11-11 | 株洲时代新材料科技股份有限公司 | Halogen-free flame-retardant sound-insulation composite material |
| CN105504586A (en) * | 2015-12-30 | 2016-04-20 | 日丰科技有限公司 | Sound-insulation shielding composite material and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104629217A (en) * | 2015-02-14 | 2015-05-20 | 青岛科技大学 | Sound insulating material and preparation method thereof |
| CN104629218A (en) * | 2015-02-14 | 2015-05-20 | 青岛科技大学 | Sound insulation material, composite carpet using the material and preparation method thereof |
| CN105034509A (en) * | 2015-06-16 | 2015-11-11 | 株洲时代新材料科技股份有限公司 | Halogen-free flame-retardant sound-insulation composite material |
| CN105504586A (en) * | 2015-12-30 | 2016-04-20 | 日丰科技有限公司 | Sound-insulation shielding composite material and preparation method thereof |
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