CN108434862A - A kind of preparation method of antiacid alkali filtrate capable of washing - Google Patents
A kind of preparation method of antiacid alkali filtrate capable of washing Download PDFInfo
- Publication number
- CN108434862A CN108434862A CN201810182709.6A CN201810182709A CN108434862A CN 108434862 A CN108434862 A CN 108434862A CN 201810182709 A CN201810182709 A CN 201810182709A CN 108434862 A CN108434862 A CN 108434862A
- Authority
- CN
- China
- Prior art keywords
- raw material
- preparation
- filtrate
- antiacid alkali
- polytetrafluoroethylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000706 filtrate Substances 0.000 title claims abstract description 46
- 238000005406 washing Methods 0.000 title claims abstract description 19
- 239000003513 alkali Substances 0.000 title claims abstract description 18
- 230000001458 anti-acid effect Effects 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 59
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 58
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 41
- 239000002994 raw material Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000005245 sintering Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 7
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 7
- 238000007731 hot pressing Methods 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- MMINFSMURORWKH-UHFFFAOYSA-N 3,6-dioxabicyclo[6.2.2]dodeca-1(10),8,11-triene-2,7-dione Chemical group O=C1OCCOC(=O)C2=CC=C1C=C2 MMINFSMURORWKH-UHFFFAOYSA-N 0.000 claims 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims 1
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 46
- 230000000694 effects Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 239000003365 glass fiber Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of preparation methods of antiacid alkali filtrate capable of washing, mainly include the following steps：Polytetrafluoroethylene (PTFE) raw material is smashed to pieces, 10 mesh was smashed to pieces and sieves~20 mesh sieve；The raw material smashed to pieces is handled into for 24 hours~48h in 23 DEG C~25 DEG C environment；Raw material is placed under the pressure environment of 15MPa~30MPa, pressurize 1min~10min；Raw material is placed under 360 DEG C~380 DEG C environment and is sintered；Cooling processing is carried out to the polytetrafluoroethylene film formed after sintering processes；Polytetrafluoroethylene film is carried out hot pressing with polyethylene terephthalate to be complex as a whole.By using polytetrafluoroethylene (PTFE) as raw material, was smashed to pieces 10 mesh and sieve~20 mesh sieve；The raw material smashed to pieces is handled into for 24 hours~48h in 23 DEG C~25 DEG C environment；Raw material is placed under the pressure environment of 15MPa~30MPa, pressurize 1min~10min；Raw material is placed under 360 DEG C~380 DEG C environment and is sintered, cooling processing is carried out to the polytetrafluoroethylene film formed after sintering processes, ultimately forms a kind of filtrate that antiacid alkali ability is strong, capable of washing.
Description
Technical field
The invention belongs to technical field of air purification, specially a kind of preparation method of antiacid alkali filtrate capable of washing.
Background technology
The major function of conventional air filter equipment is dedusting, with the continuous development of technology and carrying for people's living standard
Height, and more complicated air pollution ingredient, market proposes more requirements for air filtration product.Air is dirty at present
Object is contaminated mainly by flue dust, SO2、HF、CO2、N2、H2O etc., under the conditions of the high temperature of environment complexity, high humidity, high corrosion, partial particulate
The stickums such as object, subtle floccule, which are liable to stick on filtrate, causes filtrate to block, and most of filtrates are not capable of washing, often
It can cause prodigious waste.
Filtrate currently used for dedusting is mainly non-woven fabrics and glass fiber filter material, and that there are dust removing effects is poor for dedusting for non-woven fabrics
The problem of；Glass fiber filter material good dedusting effect, but due to the physicochemical properties of glass, the service life of glass fiber filter material
It is short so that the higher operating costs of glass fiber filter material.And there is also the antioxygenic properties poor, anti-hydrolytic performance of filtrate in the market
Difference, the disadvantage that chemical-resistance is poor, tensile strength is low, thus common filtering material cannot meet the needs of market, need
A kind of novel filtrate is wanted to solve the above problems.
Invention content
The technical problem to be solved by the present invention is to：A kind of preparation method of antiacid alkali filtrate capable of washing is provided.
The present invention is to solve a kind of technical solution that its technical problem provides to be：
A kind of preparation method of antiacid alkali filtrate capable of washing, mainly includes the following steps：
The first step smashs polytetrafluoroethylene (PTFE) raw material to pieces, smashed 10 mesh to pieces and sieves~20 mesh sieve；
The raw material smashed to pieces is handled for 24 hours~48h by second step in 23 DEG C~25 DEG C environment；
Third walks, and raw material is placed under the pressure environment of 15MPa~30MPa, pressurize 1min~10min；
Raw material is placed under 360 DEG C~380 DEG C environment and is sintered by the 4th step；
5th step carries out cooling processing to the polytetrafluoroethylene film formed after sintering processes；
6th step, polytetrafluoroethylene film and polyethylene terephthalate are complex as a whole.
As the improvement of said program, when being sintered in the 4th step, the heating rate of sintering is 30 DEG C/h.
As the improvement of said program, in the sintering process of the 4th step, sintering temperature carries out heat preservation 2h at 330 DEG C,
Sintering temperature carries out heat preservation 3h at 370 DEG C.
As the improvement of said program, when being cooled down in the 5th step, cooling rate is in 20 DEG C/h.
As the improvement of said program, in cooling procedure, temperature reduces temperature Rate when being down to 330 ± 5 DEG C.
As the improvement of said program, polytetrafluoroethylene (PTFE) and polyethylene terephthalate are answered in the 6th step
It closes, in the compound polyethylene terephthalate of the upper and lower surface of polytetrafluoroethylene (PTFE), forms filtrate.
Further include giving a discount to the filtrate after compound as being further improved for said program.
As the improvement of said program, during giving a discount to filtrate, the component on discounting device does anti-quiet
Electric treatment.
As the improvement of said program, the component on the discounting device is grounded.
The method have the benefit that：By using polytetrafluoroethylene (PTFE) as raw material, smashed to pieces 10 mesh sieve~
20 mesh sieve；The raw material smashed to pieces is handled into for 24 hours~48h in 23 DEG C~25 DEG C environment；Raw material is placed in the pressure of 15MPa~30MPa
Under force environment, pressurize 1min~10min；Raw material is placed under 360 DEG C~380 DEG C environment and is sintered, to shape after sintering processes
At polytetrafluoroethylene film carry out cooling processing, ultimately form a kind of filtrate that antiacid alkali ability is strong, capable of washing.
Description of the drawings
It is required in being described below to embodiment to make for the clearer technical solution illustrated in the embodiment of the present invention
Attached drawing briefly describes.
Fig. 1 is the flow chart of one embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of embodiment of discounting device of the present invention.
Specific implementation mode
With reference to embodiments with attached drawing to the technique effect of design, concrete structure and the generation of the present invention carry out it is clear,
It is fully described by, to fully understand the purpose of the present invention, scheme and effect.It should be noted that in the absence of conflict originally
The feature in embodiment and embodiment in application can be combined with each other.In addition the upper and lower, left and right etc. used in the present invention
It describes in only opposite figure for each component part mutual alignment relation of the present invention.
Fig. 1 is the flow chart of one embodiment of the present invention, and with reference to figure 1, the preparation method of antiacid alkali filtrate capable of washing is main
Include the following steps：
The first step smashed ready polytetrafluoroethylene (PTFE) raw material to pieces 10 mesh and sieves~20 mesh sieve, former convenient for polytetrafluoroethylene (PTFE)
The machine-shaping of material in the follow-up process.
The polytetrafluoroethylene (PTFE) raw material smashed to pieces is placed in 23 DEG C~25 DEG C environment and handles for 24 hours~48h by second step so that poly-
Tetrafluoroethylene fiber shredding and decomposition, are convenient for the processing of polytetrafluoroethylene (PTFE) raw material, while can also reduce polytetrafluoroethylene fibre and exist
Damage in process.
Third walks, and polytetrafluoroethylene (PTFE) raw material is placed under the pressure environment of 15MPa~30MPa, pressurize 1min~10min.
In one embodiment, polytetrafluoroethylene (PTFE) raw material is placed under 15MPa pressure environments, carries out pressurize, dwell pressure is at 15MPa
It is easier to be stretched uniformly, when dwell pressure is less than 15MPa, then will appear the problem of part stretches on a large scale so that raw material
The aperture of upper formation is excessive, reduces the filter effect of filtrate.In another embodiment, polytetrafluoroethylene (PTFE) raw material is placed in
Under 35MPa, polytetrafluoroethylene (PTFE) raw material is easier to be stretched uniformly, and can make polytetrafluoroethylene (PTFE) raw material when pressure is more than 35MPa
It is stretched rapidly, it is more difficult to control the tensile speed of raw material, be easy to make stretching mesh excessive, reduce the filter effect of filtrate.Cause
And preferably, when stretching, selection pressure is between 15MPa~30MPa, to obtain best drawing effect.
Preferably, select pressure limit in 15MPa during carrying out pressurize to polytetrafluoroethylene (PTFE) raw material in the third step
Between~30MPa so that polytetrafluoroethylene (PTFE) raw material can get preferable drawing effect in process, improve the good of product
Rate.
When the dwell time is less than 1min in one embodiment, polytetrafluoroethylene (PTFE) raw material can't be stretched sufficiently, pressurize
When time is more than 10min, it may appear that polytetrafluoroethylene (PTFE) raw material is excessively stretched, and being drawn usually occurs in raw material under the effect of the pressure
Disconnected problem, thus preferably in pressure maintaining period the dwell time selection between 1min~10min, it is best to obtain
Drawing effect.
Raw material is placed under 360 DEG C~380 DEG C environment and is sintered, constantly risen in sintering process by the 4th step
Temperature.Preferably when polytetrafluoroethylene (PTFE) raw material is heated to 330 DEG C, isothermal holding 2h is carried out to raw material, is heated in temperature
At 370 DEG C, then heat preservation 3h is carried out, effect is stretched caused by material flexibility so that being compensated as far as possible in stretching sintering process
The non-uniform problem of fruit.
Preferably select heating speed for 30 DEG C/h during being heated to raw material, so that raw material can be equal
It is even heated.
Preferably, cooling processing is carried out to the polytetrafluoroethylene film after sintering processes, cooling rate is 20 DEG C/h, in cooling
In temperature-fall period when temperature is down to 330 ± 5 DEG C, it is gradually reduced cooling rate so that polytetrafluoroethylene film can carry out slowly
Uniform decrease in temperature forms reliable filtrate, ensures the characteristic of polytetrafluoroethylene film.
Polytetrafluoroethylene film is formed after the completion of above-mentioned steps operation, by the upper and lower surface of polytetrafluoroethylene film
By the compound polyethylene terephthalate of hot pressing, the composite construction of multilayer is formed, enhances the acid-alkali-corrosive-resisting of filtrate, with
And water resistance.
Discounting operation preferably is carried out by discounting device to the compound rear filtrate formed, it is preferably on sale to beat in the process
Component on device for folding does grounding, ensures and not will produce electrostatic on filtrate during giving a discount, improves the reliability of filtrate.
Fig. 2 is a kind of schematic diagram of embodiment of discounting device of the present invention, with reference to figure 2, by that will be located at the filter on reel
Material expansion, setting ion blower 1 destatics processing to the filtrate of expansion at deployment opening, later in auxiliary roller 2 and increasing
Humidification process is done to filtrate under the action of wet blower 3, then filtrate is done under the action of heater 4 and is heated so that filtering
Material has good flexibility, in order to the processing that gives a discount.
Humidification wind turbine 3 is still set after filtrate comes out from heater, humidification processing, and setting ion blower 1 are done to filtrate
Processing is destaticed to filtrate, is realized under the crisscross motion of cutter 5 and bottom knife 6 and under the action of heater 4 later
The discounting of filtrate operates, and the filtrate by discounting continues through ion blower 1 and carries out destaticing processing, and be humidified wind turbine 3 into
Row humidification process ensures and remains and have good toughness on filtrate without electrostatic.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
In vain, it is not departing from the spirit and scope of the present invention defined by described claims, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (9)
1. a kind of preparation method of antiacid alkali filtrate capable of washing, mainly includes the following steps：
The first step smashs polytetrafluoroethylene (PTFE) raw material to pieces, smashs 10~20 mesh sieve to pieces；
The raw material smashed to pieces is handled for 24 hours~48h by second step in 23 DEG C~25 DEG C environment；
Third walks, and raw material is placed under the pressure environment of 15MPa~30MPa, pressurize 1min~10min；
Raw material is placed under 360 DEG C~380 DEG C environment and is sintered by the 4th step；
5th step carries out cooling processing to the polytetrafluoroethylene film formed after sintering processes；
Polytetrafluoroethylene film is carried out hot pressing with polyethylene terephthalate and is complex as a whole by the 6th step.
2. the preparation method of antiacid alkali filtrate capable of washing according to claim 1, it is characterised in that：It is carried out in the 4th step
When sintering, the heating rate of sintering is 30 DEG C/h.
3. the preparation method of antiacid alkali filtrate capable of washing according to claim 1 or 2, it is characterised in that：In the 4th step
In sintering process, sintering temperature carries out heat preservation 2h at 330 DEG C, and sintering temperature carries out heat preservation 3h at 370 DEG C.
4. the preparation method of antiacid alkali filtrate capable of washing according to claim 1, it is characterised in that：It is carried out in the 5th step
When cooling, cooling rate is in 20 DEG C/h.
5. according to the preparation method for the antiacid alkali filtrate capable of washing that claim 1 or 4 is told, it is characterised in that：In cooling procedure
In, temperature reduces cooling rate when being down to 330 ± 5 DEG C.
6. the preparation method of antiacid alkali filtrate capable of washing according to claim 1, it is characterised in that：It will gather in the 6th step
Tetrafluoroethene carries out compound tense with polyethylene terephthalate, compound poly- pair in the upper and lower surface of polytetrafluoroethylene (PTFE)
Ethylene terephthalate forms filtrate.
7. the preparation method of antiacid alkali filtrate capable of washing according to claim 6, it is characterised in that：Further include to after compound
Filtrate give a discount.
8. the preparation method of antiacid alkali filtrate capable of washing according to claim 7, it is characterised in that：It is beaten to filtrate
During folding, the component on discounting device does antistatic process.
9. the preparation method of antiacid alkali filtrate capable of washing according to claim 8, it is characterised in that：On the discounting device
Component be grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810182709.6A CN108434862A (en) | 2018-03-06 | 2018-03-06 | A kind of preparation method of antiacid alkali filtrate capable of washing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810182709.6A CN108434862A (en) | 2018-03-06 | 2018-03-06 | A kind of preparation method of antiacid alkali filtrate capable of washing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108434862A true CN108434862A (en) | 2018-08-24 |
Family
ID=63193678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810182709.6A Pending CN108434862A (en) | 2018-03-06 | 2018-03-06 | A kind of preparation method of antiacid alkali filtrate capable of washing |
Country Status (1)
| Country | Link |
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| CN (1) | CN108434862A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621748A (en) * | 2019-01-07 | 2019-04-16 | 浙江净膜环保有限责任公司 | The preparation method of low-resistance coated filter material |
| CN109647054A (en) * | 2019-01-07 | 2019-04-19 | 浙江净膜环保有限责任公司 | Laminating base fabric filtrate |
| CN112076538A (en) * | 2020-09-11 | 2020-12-15 | 厦门格锐特环保科技有限公司 | Pure PTFE (polytetrafluoroethylene) filtering material and preparation method thereof |
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| CN1052797A (en) * | 1989-12-07 | 1991-07-10 | 大金工业株式会社 | Method for manufacturing multilayer polytetrafluoroethylene porous membrane and semi-sintered polytetrafluoroethylene multilayer structure product |
| CN103007632A (en) * | 2012-12-31 | 2013-04-03 | 上海博格工业用布有限公司 | High-efficiency low-resistance non-woven filter material and production method thereof |
| CN103585833A (en) * | 2013-11-28 | 2014-02-19 | 新乡市胜达过滤净化技术有限公司 | Bag type dust collector filter bag |
| CN104144734A (en) * | 2012-02-23 | 2014-11-12 | 日东电工株式会社 | Blended nonwaven fabric, filter filtration material, and filter unit |
| CN107415265A (en) * | 2017-05-23 | 2017-12-01 | 威孔过滤科技（苏州）有限公司 | The preparation method of sintering polytetrafluoroethylene filter core |
-
2018
- 2018-03-06 CN CN201810182709.6A patent/CN108434862A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052797A (en) * | 1989-12-07 | 1991-07-10 | 大金工业株式会社 | Method for manufacturing multilayer polytetrafluoroethylene porous membrane and semi-sintered polytetrafluoroethylene multilayer structure product |
| CN104144734A (en) * | 2012-02-23 | 2014-11-12 | 日东电工株式会社 | Blended nonwaven fabric, filter filtration material, and filter unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621748A (en) * | 2019-01-07 | 2019-04-16 | 浙江净膜环保有限责任公司 | The preparation method of low-resistance coated filter material |
| CN109647054A (en) * | 2019-01-07 | 2019-04-19 | 浙江净膜环保有限责任公司 | Laminating base fabric filtrate |
| CN112076538A (en) * | 2020-09-11 | 2020-12-15 | 厦门格锐特环保科技有限公司 | Pure PTFE (polytetrafluoroethylene) filtering material and preparation method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180824 |
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