CN107641213A - A kind of aeroge polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film and preparation method thereof - Google Patents
A kind of aeroge polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film and preparation method thereof Download PDFInfo
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- CN107641213A CN107641213A CN201710967711.XA CN201710967711A CN107641213A CN 107641213 A CN107641213 A CN 107641213A CN 201710967711 A CN201710967711 A CN 201710967711A CN 107641213 A CN107641213 A CN 107641213A
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Abstract
The invention discloses a kind of aeroge polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film and preparation method thereof, including：Ventilative film layer and sol pellicle layer, sol pellicle layer are compound in the single side face or multiple sides of ventilative film layer, and sol pellicle thickness degree is 10 100 μm；Including following preparation process：Ventilated membrane is subjected to 10 ~ 20min of supersound process respectively in deionized water, ethanol and acetone, dried, the ventilated membrane after must cleaning；By appropriate aerogel precursor body ie in solution, in different ways on the ventilated membrane of even spread after cleaning, final sol pellicle thickness is 10 ~ 100 μm；The ventilated membrane for scribbling sol pellicle is put into baking oven and is dried, final colloidal sol occurs gel and is converted into aeroge, that is, is prepared into aeroge polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film.By the above-mentioned means, the present invention improves the thermal acoustic insulation effect of laminated film；Fire protecting performance is preferable, friendly to environment and human-body safety, long lifespan, anticorrosion, outdoor resistance to ultraviolet environments aging.
Description
Technical field
The present invention relates to thermal acoustic insulation technical field, more particularly to a kind of aeroge-polytetrafluoroethylene (PTFE) composite adiabatic every
Sound ventilated membrane and preparation method thereof.
Background technology
At present the insulation material that largely uses be mainly mineral wool, it is inorganic fireproof thermal-insulation mortar, rock wool, foam glass, poly-
Styrofoam and polyurethane foam plastics etc., these material heat insulation effects are poor, and conventional organic material fire protecting performance is not
Ideal, and inorganic material water absorption rate it is big, easily " condensation ", when constructing the problems such as skin urtication.Aeroge has continuous three dimensional network
Network structure, it is a kind of novel porous materials with nano-pore structure, its density is low and can be in interior regulation in a big way, voidage
Up to 80% ~ 99.8%, aperture is between 1 ~ 100 nm, and specific surface area is up to 1000 m2/g；Due to its unique structure, aeroge
With good thermal and insulating performance.Make aerogel material in calorifics, acoustics, optics, microelectronics, grain just because of these features
There is very wide application potential in terms of sub- detection.
Silica aerogel material has extremely low thermal conductivity factor, 0.013-0.016W/ (m K) is can reach, less than quiet
State air（0.024W/(m•K)）Thermal conductivity coefficient, the 2-3 order of magnitude lower than corresponding inorganic insulating material.Even in 800 DEG C
At a high temperature of its thermal conductivity factor be just 0.043W/ (m K).Do not decomposed under high temperature, no pernicious gas is released, and belongs to environmental type
Material.
Due to the low acoustic-velocity characteristic of aerosil, it or a kind of preferably acoustical delay or high temperature acoustic material
Material.This is the three-dimensional hole built by nano level silicon dioxide microparticle, and its porosity is up to 80-99.8%, the typical chi of hole
Very little is 1-100 nm, and the resistance of the air molecule flowing in these nano level holes is very big, it is necessary to consume substantial amounts of incidence
Noise wave energy so that the direction of transfer of noise wave energy changes, and noise wave energy is as aeroge labyrinth inside duct
Exponential damping is presented in the multi-direction stickiness dissipation effect of reciprocating vibration of generation, and substantial amounts of noise energy is absorbed by aeroge so that
It is decreased obviously through the sound of aerogel layer, so as to show the effect of strong sound insulation.
The preparation of silica aerogel is more ripe（CN1544324《The system of silica aerogel material
Preparation Method》）, but bad mechanical strength be present, the problems such as shed powder, it is more using and other materials such as polyimides or polytetrafluoroethyl-ne
The compound mode such as alkene improves mechanical strength.Current silicon dioxide aerogel composite thermal insulation material will be it has been reported that use will more
Substrate surface is bonded at after the airsetting rubber pulverizing of preparation, ultimately forms composite.Such as CN1546312《Aeroge composite and flexible is protected
Warm thermal insulation film and preparation method thereof》, combined after aerosil is crushed with silicones, it is final to obtain silica gas
Gel/Kapton/metallic aluminium (Al) film, but destruction be present to the structure of aeroge in shattering process, reduce gas
The heat-proof quality of gel, while preparation process is complicated, is unfavorable for producing on a large scale.CN1875060B《Aeroge/polytetrafluoroethylene (PTFE)
Composite insulation material》It is similar, aeroge shattering process is equally existed, reduces the heat-proof quality of aeroge；Only focus on simultaneously
The heat-proof quality of laminated film, do not utilized effectively for acoustical behavior.In addition, the research of current aerogel composite
Heat-insulated aspect is focused primarily upon, the cost of aeroge is higher, it is necessary to widen the performance and application field of aerogel composite.
The content of the invention
The present invention solves the technical problem of provide it is a kind of there is stronger thermal acoustic insulation performance, mechanical performance is steady
It is fixed, environment-friendly aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film and preparation method thereof.
In order to solve the above technical problems, one aspect of the present invention is：A kind of aeroge-polytetrafluoroethyl-ne is provided
Alkene composite adiabatic sound-proof and ventilating film, including：Ventilative film layer and sol pellicle layer, sol pellicle layer are compound in the one side of ventilative film layer
On face or multiple sides, sol pellicle thickness degree is 10-100 μm.
In a preferred embodiment of the present invention, the ventilative film layer is eptfe membrane layer.
In a preferred embodiment of the present invention, described sol pellicle layer is silicon dioxide gel film layer.
In a preferred embodiment of the present invention, a kind of aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating is further related to
The preparation method of film, comprises the following steps：
1）The cleaning of ventilated membrane
Ventilated membrane is subjected to 10 ~ 20min of supersound process respectively in deionized water, ethanol and acetone, dried, it is saturating after must cleaning
Air film；
2）The coating of sol pellicle
By appropriate aerogel precursor body ie in solution, in different ways on the ventilated membrane of even spread after cleaning, final is molten
Glue film thickness is 10 ~ 100 μm；
3）The drying of aeroge
The ventilated membrane for scribbling sol pellicle is put into baking oven and is dried, final colloidal sol occurs gel and is converted into aeroge,
It is prepared into aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film.
In a preferred embodiment of the present invention, the ventilated membrane is eptfe membrane.
In a preferred embodiment of the present invention, the aeroge is aerosil.
In a preferred embodiment of the present invention, the step 2）In, aerogel precursor body is with methyl trimethoxy epoxide silicon
Alkane MTMS, dimethyldimethoxysil,ne DMDMS and hexadecyltrimethylammonium chloride CTAC are raw material, and hydrochloric acid HCl is catalysis
Agent, mix the solution of formation.
In a preferred embodiment of the present invention, the volume proportion of each raw material of the solution is MTMS: DMDMS: HCl
For 3-6：2-5：20-26, concentration of hydrochloric acid are 4 × 10-4 -8×10-4Mol/L, the mixed solution of acquisition is per 20-30 mL additions 1-
3g CTAC.
In a preferred embodiment of the present invention, step 2）In, coating method is：Spin coating, blade coating, spraying or dipping-carry
Daraf(reciprocal of farad).
In a preferred embodiment of the present invention, step 3）In, drying mode CO2Supercritical drying, Ethanol supercritical
Dry or constant pressure and dry.
The beneficial effects of the invention are as follows：The present invention realizes answering for aerosil layer and eptfe membrane
Close, it is poor to overcome aerosil mechanical stability, it is loose frangible the shortcomings that, and aerosil and varicosity are gathered
The thermal insulation and the advantage of sound absorption sound insulation and noise reduction that tetrafluoroethylene has combine, and that has expanded aerogel composite applies model
Enclose, improve the thermal acoustic insulation effect of laminated film；Fire protecting performance is preferable, friendly to environment and human-body safety, long lifespan, anti-corrosion
Erosion, outdoor resistance to ultraviolet environments aging.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other
Accompanying drawing, wherein：
Fig. 1 is the structural representation of aeroge of the present invention-preferred embodiment of polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film one；
Fig. 2 is the structural representation of aeroge of the present invention-another preferred embodiment of polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film.
Embodiment
The technical scheme 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, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
All other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
The embodiment of the present invention includes：
A kind of aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, including：Ventilative film layer 1 and sol pellicle layer 2, colloidal sol
Film layer 2 is compound on single side face or the multiple sides of ventilative film layer 1, and as depicted in figs. 1 and 2, the thickness of sol pellicle layer 2 is
10-100μm。
Wherein, the ventilative film layer 1 is preferably eptfe membrane layer.Described sol pellicle layer 2 is preferably two
Silica sol film layer.
Embodiment 1：A kind of aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating membrane material, comprises the following steps：
1）The cleaning of ventilated membrane
The m of 1 m × 1 expanded PTFE film layer of breathing freely is ultrasonically treated respectively in deionized water, ethanol and acetone
15min, drying, the ventilative film layer after must cleaning；
2）The coating of sol pellicle
By 7 mL MTMS, 4.2 mL DMDMS and 28.8 mL concentration 4 × 10-4Mol/L HCl solution adds reactor, and
1.68 g CTAC are added, 40 mL aerogel precursor bodies are obtained after stirring 1 h in a kettle（Colloidal sol）, colloidal sol is poured on varicosity
On polyfluortetraethyleventilated ventilated membrane layer, breathed freely in expanded PTFE using 50 μm of scrapers and scratched in film layer, final is molten
Glue film thickness is 50 μm.
3）The drying of aeroge
Scribble 50 μm of aerogel precursor bodies（Colloidal sol）Ventilative film layer be put into 40 DEG C of oven drying 72 h, final colloidal sol occurs solidifying
Glue is simultaneously converted into aeroge, obtains aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film.
The thermal conductivity of the composite adiabatic sound-proof and ventilating film is 0.023W/ (m K), the nothing in -200 DEG C ~ 300 DEG C temperature environments
Bursting by freezing, the not aging that works can be chronically exposed under the ultraviolet of outdoor exposure.
Embodiment 2：A kind of aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating membrane material, comprises the following steps：
1）The cleaning of ventilated membrane
The m of 1 m × 1 expanded PTFE film layer of breathing freely is ultrasonically treated respectively in deionized water, ethanol and acetone
15 min, drying, the ventilative film layer after must cleaning；
2）The coating of sol pellicle
By 11.2 mL MTMS, 6.8 mL DMDMS and 46.1 mL, concentration is 5 × 10-4 Mol/L HCl solution adds reaction
Kettle, and 2.69 g CTAC are added, obtain 65 mL aerogel precursor bodies after stirring 1 h in a kettle（Colloidal sol）, use spray gun
Breathe freely in expanded PTFE and sprayed in film layer, final sol pellicle thickness is 80 μm.
3）The drying of aeroge
Scribble 80 μm of aerogel precursor bodies（Colloidal sol）Ventilative film layer be put into CO2Gel occurs for supercritical drying, final colloidal sol simultaneously
Aeroge is converted into, obtains aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film.
The thermal conductivity of the composite adiabatic sound-proof and ventilating film is 0.020W/ (m K), the nothing in -200 DEG C ~ 300 DEG C temperature environments
Bursting by freezing, the not aging that works can be chronically exposed under the ultraviolet of outdoor exposure.
Embodiment 3：
A kind of aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating membrane material, comprises the following steps：
1）The cleaning of ventilated membrane
The m of 1 m × 1 expanded PTFE film layer of breathing freely is ultrasonically treated respectively in deionized water, ethanol and acetone
20min, drying, the ventilative film layer after must cleaning；
2）The coating of sol pellicle
By 6 mL MTMS, 4.5 mL DMDMS and 31.5 mL, concentration is 8 × 10-4 Mol/L HCl solution adds reactor,
And 3.12 g CTAC are added, obtain 42mL aerogel precursor bodies after stirring 1 h in a kettle（Colloidal sol）, existed using spin coater
Spin coating is carried out in the ventilative film layer of expanded PTFE, final sol pellicle thickness is 76 μm.
3）The drying of aeroge
Scribble 76 μm of aerogel precursor bodies（Colloidal sol）Ventilative film layer be put into ethanol supercritical drying, gel occurs for final colloidal sol simultaneously
Aeroge is converted into, obtains aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film.
The thermal conductivity of the composite adiabatic sound-proof and ventilating film is 0.020W/ (m K), the nothing in -200 DEG C ~ 300 DEG C temperature environments
Bursting by freezing, the not aging that works can be chronically exposed under the ultraviolet of outdoor exposure.
Embodiment 4：
A kind of aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating membrane material, comprises the following steps：
1）The cleaning of ventilated membrane
The m of 1 m × 1 expanded PTFE film layer of breathing freely is ultrasonically treated respectively in deionized water, ethanol and acetone
10min, drying, the ventilative film layer after must cleaning；
2）The coating of sol pellicle
By 13.8mL MTMS, 11.5 mL DMDMS and 59.8 mL, concentration is 5 × 10-4 Mol/L HCl solution adds reaction
Kettle, and 7.9g CTAC are added, obtain 85 mL aerogel precursor bodies after stirring 1 h in a kettle（Colloidal sol）, using impregnating-carry
Daraf(reciprocal of farad) is breathed freely in expanded PTFE and smeared in film layer, and final sol pellicle thickness is 93 μm.
3）The drying of aeroge
Scribble 93 μm of aerogel precursor bodies（Colloidal sol）The ventilative h of film layer constant pressure and dry 72 or so, final colloidal sol occurs gel and simultaneously turns
Aeroge is turned to, obtains aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film.
The thermal conductivity of the composite adiabatic sound-proof and ventilating film is 0.020W/ (m K), the nothing in -200 DEG C ~ 300 DEG C temperature environments
Bursting by freezing, the not aging that works can be chronically exposed under the ultraviolet of outdoor exposure.
The present invention realizes the compound of aerosil layer and eptfe membrane, overcomes silica gas
Gel mechanical stability is poor, it is loose frangible the shortcomings that, and aerosil and eptfe membrane had exhausted
Heat and the advantage of sound absorption sound insulation and noise reduction combine, and have expanded the application of aerogel composite, have improved laminated film
Thermal acoustic insulation effect；Fire protecting performance is preferable, friendly to environment and human-body safety, long lifespan, anticorrosion, outdoor resistance to ultraviolet environments
Aging.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, it is included within the scope of the present invention.
Claims (10)
- A kind of 1. aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, it is characterised in that including：Ventilative film layer and colloidal sol Film layer, sol pellicle layer are compound in the single side face or multiple sides of ventilative film layer, and sol pellicle thickness degree is 10-100 μm.
- 2. aeroge according to claim 1-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, it is characterised in that described Ventilative film layer is eptfe membrane layer.
- 3. aeroge according to claim 1-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, it is characterised in that described Sol pellicle layer be silicon dioxide gel film layer.
- 4. the preparation method of aeroge according to claim 1-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, its feature It is, comprises the following steps：1）The cleaning of ventilated membraneVentilated membrane is subjected to 10 ~ 20min of supersound process respectively in deionized water, ethanol and acetone, dried, it is saturating after must cleaning Air film；2）The coating of sol pellicleBy appropriate aerogel precursor body ie in solution, in different ways on the ventilated membrane of even spread after cleaning, final is molten Glue film thickness is 10 ~ 100 μm；3）The drying of aerogeThe ventilated membrane for scribbling sol pellicle is put into baking oven and is dried, final colloidal sol occurs gel and is converted into aeroge, It is prepared into aeroge-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film.
- 5. the preparation method of aeroge according to claim 4-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, its feature It is, the ventilated membrane is eptfe membrane.
- 6. the preparation method of aeroge according to claim 4-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, its feature It is, the aeroge is aerosil.
- 7. the preparation method of aeroge according to claim 4-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, its feature It is, the step 2）In, aerogel precursor body is with MTMS MTMS, dimethyldimethoxysil,ne DMDMS and hexadecyltrimethylammonium chloride CTAC is raw material, and hydrochloric acid HCl is catalyst, mixes the solution of formation.
- 8. the preparation method of aeroge according to claim 6-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, its feature It is, the volume proportion of each raw material of the solution is MTMS: DMDMS:HCl is 3-6：2-5：20-26, concentration of hydrochloric acid 4 ×10-4 -8×10-4Mol/L, the mixed solution of acquisition add 1-3g CTAC per 20-30 mL.
- 9. the preparation method of aeroge according to claim 4-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, its feature It is, step 2）In, coating method is：Spin coating, blade coating, spraying or dipping-pulling method.
- 10. the preparation method of aeroge according to claim 4-polytetrafluoroethylene (PTFE) composite adiabatic sound-proof and ventilating film, it is special Sign is, step 3）In, drying mode CO2Supercritical drying, ethanol supercritical drying or constant pressure and dry.
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| CN109336544A (en) * | 2018-11-05 | 2019-02-15 | 天津摩根坤德高新科技发展有限公司 | Silica modified PVDF aerogel heat-insulating felt and preparation method thereof |
| WO2021139012A1 (en) * | 2020-01-07 | 2021-07-15 | 南京大学 | Method for activating polytetrafluoroethylene and application |
| CN113527760A (en) * | 2020-04-20 | 2021-10-22 | 江苏泛亚微透科技股份有限公司 | Method for manufacturing expanded polytetrafluoroethylene (ePTFE) -silicon dioxide aerogel composite heat-insulating film material |
| CN114804818A (en) * | 2022-05-24 | 2022-07-29 | 巩义市泛锐熠辉复合材料有限公司 | Low-cost aerogel composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109336544A (en) * | 2018-11-05 | 2019-02-15 | 天津摩根坤德高新科技发展有限公司 | Silica modified PVDF aerogel heat-insulating felt and preparation method thereof |
| CN109336544B (en) * | 2018-11-05 | 2021-02-23 | 天津摩根坤德高新科技发展有限公司 | Silicon dioxide modified PVDF aerogel heat insulation felt and preparation method thereof |
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