CN105220257B - The modification monofilament and the preparation method of industrial filter screen of resistive connection crystalline substance and high-wearing feature - Google Patents
The modification monofilament and the preparation method of industrial filter screen of resistive connection crystalline substance and high-wearing feature Download PDFInfo
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- CN105220257B CN105220257B CN201510581151.5A CN201510581151A CN105220257B CN 105220257 B CN105220257 B CN 105220257B CN 201510581151 A CN201510581151 A CN 201510581151A CN 105220257 B CN105220257 B CN 105220257B
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- filter screen
- monofilament
- preparation
- crystalline substance
- resistive connection
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000126 substance Substances 0.000 title claims abstract description 17
- 230000004048 modification Effects 0.000 title abstract description 13
- 238000012986 modification Methods 0.000 title abstract description 13
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims abstract description 19
- 238000002844 melting Methods 0.000 claims abstract description 14
- 230000008018 melting Effects 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000004743 Polypropylene Substances 0.000 claims description 29
- 229920001155 polypropylene Polymers 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000011265 semifinished product Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 7
- 238000003490 calendering Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 238000005491 wire drawing Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 11
- 238000001914 filtration Methods 0.000 abstract description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 10
- 239000011737 fluorine Substances 0.000 description 10
- 229910052731 fluorine Inorganic materials 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002243 precursor Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000005661 hydrophobic surface Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
- Filtering Materials (AREA)
- Woven Fabrics (AREA)
Abstract
The invention discloses resistive connection crystalline substance and the modification monofilament and the preparation method of industrial filter screen of high-wearing feature, including steps such as raw material preparation, blended melting extruded monofilament, monofilament hot gas spring, thermal finalizations, make full use of ETFE non-stick and hydrophobicity, the material of filtering is set to be separated completely with filter screen, so as to avoid the problem of material is crystallized in filter screen hole, while making the anti-wear performance of filter screen be greatly improved.
Description
Technical field
The present invention relates to chemical field, the modification monofilament and industrial filter screen of specially a kind of resistive connection crystalline substance and high-wearing feature.
Background technology
Monofilament is of different nature to use the one filament that the number obtained by multi-holed jet is larger in production of chemical fibre
Monofilament can be used for meeting different demand product, such as textile, fishing lines, rope, industrial filter screen.
Industrial chemicals is indispensable important source material in industrial production, and it is former that every industrial production nearly all be unable to do without chemical industry
Material, the extraction and production of wherein Inorganic Chemicals mostly come from mineral products, with a large amount of exploitations of mineral products in recent years, ore
Grade is more and more lower, and the extraction of useful mineral products becomes more and more difficult in ore, therefore industrial filter screen is as filtering and divides
Medium from mineral slurry just seems more and more important, and particularly non-ferrous metal industry, phosphoric acid industry and titanium dioxide industry are used
Industrial filter screen there is serious crystallization fouling, result in blockage filter screen, is gradually reduced the strainability of filter screen, causes product
Production capacity and quality degradation, while easily hardened after filter screen crystallization, toughness reduction, the wearability of filter screen is also deteriorated, local to gall
Scrapping for whole piece filter screen can be caused afterwards.The monofilament material that filter screen in the market is used is based on polypropylene (PP), and material is easy
Crystallize in filter screen grandson's gap, cause filter screen pore plugging, simultaneously because PP materials wear no resistance, reliable service life is no more than
One month, the requirement of industry production is not reached completely.
The content of the invention
It is an object of the invention to provide a kind of modified monofilament and industrial filter screen, to avoid material from being crystallized in filter screen hole
The problem of, while improving the anti-wear performance of filter screen.
The invention discloses the preparation method of resistive connection crystalline substance and the modification monofilament of high-wearing feature, comprise the following steps：
S1. raw material preparation, is equipped with by weight ratio：Wire drawing grade polypropylene（PP）4 parts, ethylene-tetrafluoroethylene copolymer
（ETFE）1 part；
S2. blended melting extruded monofilament, by it is above-mentioned with the raw material got ready in extrusion screw rod blended melting and extruded monofilament,
The temperature setting that each section of extrusion screw rod is：270 DEG C~280 DEG C of feed zone, 290 DEG C~300 DEG C of compression section, 300 DEG C of metering section~
310 DEG C, 310 DEG C~315 DEG C of die head；
S3. monofilament hot gas spring, the monofilament that step S2 is extruded from die head obtains nascent fibre through 60 DEG C~80 DEG C of water cooling
Dimension, then successively through 90 DEG C~100 DEG C of hot water and 120 DEG C~140 DEG C of hot blast progress twice hot gas spring, total draft multiple is 6
~6.5 times；
S4. monofilament thermal finalization, the monofilament after drawing-off carries out thermal finalization processing through 130 DEG C~150 DEG C of hot blast and changed
Property monofilament.
Wherein, described wire drawing grade polypropylene（PP）Melting means be 2~3g/10min, described ethylene-tetrafluoroethylene is total to
Polymers（ETFE）Melting means be 20~30g/min.
Preferably, in step S3, the drawing multiple of first of hot gas spring accounts for the 70%~80% of total drawing multiple.
The modification monofilament of the present invention has the advantages that：
（1）Using the PP monofilament through fluoroplastic modification, ethylene-tetrafluoroethylene copolymer is taken full advantage of（ETFE）Do not glue
Property and hydrophobicity so that with anti-crystallization energy.
（2）From the ETFE of the high melting means trade mark, mainly there is both sides reason：On the one hand the processing in view of ETFE is needed
Temperature must try one's best close with PP processing temperature, so be conducive to both miscible, while can avoid because of processing temperature difference
Cause a kind of decomposition of material greatly；On the other hand under same processing temperature, the ETFE of high melting means possesses preferable flowing
Property, makes it easier for the surface migration to monofilament, is so conducive to making the surface characteristic of monofilament closer to ETFE.
（3）Hot water and hot blast twice hot gas spring are used when monofilament heat is led, first is preliminary draft, and drafting multiple accounts for total draft
The 70-80% of multiple, second is so conducive to improving the tension strength of monofilament to strengthen drawing-off.And the control of total draft multiple exists
6-6.5 times be in order to ensure strength of filament on the premise of, while to take into account the pliability of monofilament, multiple is too high, monofilament it is tough
Property be deteriorated, multiple is too low, and the strength of monofilament is not enough.By twice hot gas spring, the intensity and pliability of modification monofilament of the invention
More satisfactory state is reached.
The invention also discloses the preparation method of resistive connection crystalline substance and the industrial filter screen of high-wearing feature, by above-mentioned steps S1~S4 systems
Followed the steps below again after standby modified monofilament：
S5. filter screen is woven, modified monofilament is carried out on heavy loom being woven into semi-finished product by the density and texture of fabric
Filter screen；
S6. filter screen thermal finalization, described semi-finished product filter screen carries out thermal finalization at a temperature of 120 DEG C~150 DEG C；
Preferably, in addition to step S7 calendering shapings, semi-finished product filter screen carries out carrying out heat under calender after thermal finalization pressing and smooth
Light, temperature is 130 DEG C~150 DEG C, and pressure is 4MPa~6MPa.
Modified monofilament is used for industrial filter screen by the present invention, is made full use of ETFE non-stick and hydrophobicity, is made the thing of filtering
Material can be separated with filter screen completely, so that the problem of material is crystallized in filter screen hole is avoided, while the fiber being modified through ETFE
Skin-friction coefficient is greatly reduced, and the anti-wear performance of filter screen is greatly improved.Using high-temperature shaping and calendering skill
Art can improve the surface flatness of filter screen, the non-stick and wearability of filter screen is further enhanced.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.
Embodiment one
The preparation method of resistive connection crystalline substance and the modification monofilament of high-wearing feature, it is characterised in that comprise the following steps：
S1. filter screen raw material preparation, is equipped with by weight ratio.
The present embodiment is as follows from raw material：
Wire drawing grade polypropylene（PP）, trade mark PPH-T03 (producers：Hainan petrochemical industry), melting means 2.17g/10min, 800g；
Ethylene-tetrafluoroethylene copolymer（ETFE, also known as F40）, the Teflon trade mark 750（Producer：Dupont）, it is molten to refer to
25g/10min, 200g.
S2. blended melting extruded monofilament, by it is above-mentioned with the raw material got ready in extrusion screw rod blended melting and extruded monofilament,
The temperature setting that each section of extrusion screw rod is：270 DEG C~280 DEG C of feed zone, 290 DEG C~300 DEG C of compression section, 300 DEG C of metering section~
310 DEG C, 310 DEG C~315 DEG C of die head；
S3. monofilament hot gas spring, the monofilament that step S2 is extruded from die head obtains nascent fibre through 60 DEG C~80 DEG C of water cooling
Dimension, then sequentially pass through twice hot gas spring.
（1）Preliminary draft is carried out through 100 DEG C of hot water, drafting multiple is 5.2 times.
（2）Secondary drawing-off is carried out through 120 DEG C of hot blast, drafting multiple is 1.3 times.
S4. monofilament thermal finalization, the monofilament after drawing-off carries out thermal finalization processing through 130 DEG C~150 DEG C of hot blast and changed
Property monofilament.
Embodiment two
The preparation method of resistive connection crystalline substance and the modification monofilament of high-wearing feature, remaining step and the phase of embodiment one in addition to step S3
Together.
S3. monofilament hot gas spring, the monofilament that step S2 is extruded from die head obtains nascent fibre through 60 DEG C~80 DEG C of water cooling
Dimension, then sequentially pass through twice hot gas spring.
（1）Preliminary draft is carried out through 90 DEG C of hot water, drafting multiple is 4.2 times.
（2）Secondary drawing-off is carried out through 140 DEG C of hot blast, drafting multiple is 1.8 times.
The modification monofilament that above-described embodiment one, two is prepared（Respectively PP fluorine richness silk 1#, PP fluorine richness silks 2# and PP
Precursor carries out wearability test, and test process and result are as follows：
Test apparatus：Reciprocating Wear test instrument, stroke 100mm, speed 30ind./min, abrasion body are 60# sandstones.Examination
Test data as shown in table 1.
The wearability test of the PP fluorine richness monofilament of table 1. and PP precursor
| Product category | String diameter/mm | Rub number of times/number of times |
| PP precursor | 0.30 | 2160±10 |
| PP fluorine richness silk 1# | 0.30 | 2916±10 |
| PP fluorine richness silk 2# | 0.30 | 3015±10 |
From the more traditional PP precursor of the modification monofilament of results showed that the inventive method preparation, wearability is more preferable.
Embodiment three
The preparation method of resistive connection crystalline substance and the industrial filter screen of high-wearing feature, it is characterised in that comprise the following steps：
S1 ~ S4 be the same as Examples two.
S5. filter screen is woven, modified monofilament is carried out on heavy loom being woven into semi-finished product by the density and texture of fabric
Filter screen；
S6. filter screen thermal finalization, semi-finished product filter screen carries out thermal finalization at a temperature of 120 DEG C~150 DEG C；
S7. calendering shaping, semi-finished product filter screen carries out hot calendering after carrying out thermal finalization under calender, and temperature is 130 DEG C~
150 DEG C, pressure is 4MPa~6MPa.
The industrial filter screen that the present embodiment is prepared carries out following test：
（1）Hydrophobicity
Test equipment：Contact angle measurement, 0.01 ° of measuring resolution, 0.1 ° of measuring accuracy.
Technical indicator：It is hydrophobic surface that surface of solids water contact angle, which is more than 90 °,.
Measurement data is as shown in table 2.
The hydrophobicity of the PP fluorine richness filter screen of the present invention of table 2. and tradition PP filter screens is tested
| Filter screen model | Contact angle/° |
| 2120（It is unmodified） | 75±3 |
| FP2120（Fluorine richness） | 115±5 |
As known from Table 2, the surface of solids water contact angle for the filter screen that the present embodiment is obtained is more than 90 °, is hydrophobic surface.Work
Industry filter screen is used to filtering and separating mineral slurry, and using traditional PP filter screens, slurries are easily attached on filter screen, at a certain temperature,
Solute causes filter net jam to separate out the fouling on filter screen in the form of crystal, and fluorine richness filter screen of the invention is hydrophobicity, slurries
It is difficult to be attached to above, plays the brilliant effect of resistive connection.
（2）Wearability is detected
Estimate equipment：Cloth abrasion instrument, 100# emery wheels, load 1000cN.
Measurement data is as shown in table 3.
The wearability test of the PP fluorine richness filter screen of the present invention of table 3. and tradition PP filter screens
| Filter screen model | Mass area ratio g/m2 | Abrasion quality g/m under 10000 turns2 | Abrasion quality accounts for mass area ratio and compares % |
| 2120 is (unmodified） | 325 | 41.3 | 12.7 |
| FP2120 (fluorine richness) | 302 | 20.1 | 7.1 |
As known from Table 3, the more traditional filter screen of the wear intensity of filter screen of the present invention is low, i.e., wearability is good.
To sum up, the preparation method of modified monofilament and industrial filter screen disclosed by the invention is prepared modification monofilament and industry
The anti-crystallization and wearability of filter screen are good, suitable commercial introduction.
The foregoing is only a preferred embodiment of the present invention, any one skilled in the art exists
The invention discloses technical scope in, the change or replacement that can be readily occurred in should be all included within the scope of the present invention.
Claims (4)
1. the preparation method of a kind of resistive connection crystalline substance and the industrial filter screen of high-wearing feature, it is characterised in that prepared according to step S1~S4
Modified monofilament：
S1. raw material preparation, is equipped with by weight ratio：4 parts of wire drawing grade polypropylene (PP), ethylene-tetrafluoroethylene copolymer (ETFE) 1
Part；
S2. blended melting extruded monofilament, by it is above-mentioned with the raw material got ready in extrusion screw rod blended melting and extruded monofilament, extrusion
The temperature setting of screw zones is：270 DEG C~280 DEG C of feed zone, 290 DEG C~300 DEG C of compression section, metering section 300 DEG C~310
DEG C, 310 DEG C~315 DEG C of die head；
S3. monofilament hot gas spring, the monofilament that step S2 is extruded from die head obtains as-spun fibre through 60 DEG C~80 DEG C of water cooling, then
Twice hot gas spring is carried out through 90 DEG C~100 DEG C of hot water and 120 DEG C~140 DEG C of hot blast successively, total draft multiple is 6~6.5
Times；
S4. monofilament thermal finalization, the monofilament after drawing-off carries out thermal finalization processing through 130 DEG C~150 DEG C of hot blast and obtains modified single
Silk；Follow the steps below again and obtain finished product filter screen：
S5. filter screen is woven, modified monofilament is carried out on heavy loom being woven into semi-finished product filter screen by the density and texture of fabric；
S6. filter screen thermal finalization, described semi-finished product filter screen carries out thermal finalization at a temperature of 120 DEG C~150 DEG C.
2. the preparation method of a kind of resistive connection crystalline substance as claimed in claim 1 and the industrial filter screen of high-wearing feature, it is characterised in that institute
The melting means for the wire drawing grade polypropylene (PP) stated is 2~3g/10min, the melting means of described ethylene-tetrafluoroethylene copolymer (ETFE)
For 20~30g/10min.
3. the preparation method of a kind of resistive connection crystalline substance as claimed in claim 1 or 2 and the industrial filter screen of high-wearing feature, its feature exists
In：In step S3, the drawing multiple of first of hot gas spring accounts for the 70%~80% of total drawing multiple.
4. the preparation method of a kind of resistive connection crystalline substance as claimed in claim 1 and the industrial filter screen of high-wearing feature, it is characterised in that also
Including step S7 calendering shapings, semi-finished product filter screen carries out hot calendering after carrying out thermal finalization under calender, and temperature is 130 DEG C~
150 DEG C, pressure is 4MPa~6MPa.
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| CN201510581151.5A CN105220257B (en) | 2015-09-14 | 2015-09-14 | The modification monofilament and the preparation method of industrial filter screen of resistive connection crystalline substance and high-wearing feature |
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| CN111939673A (en) * | 2020-08-27 | 2020-11-17 | 海信（山东）空调有限公司 | Filter screen and air conditioner |
| CN115262060A (en) * | 2022-08-19 | 2022-11-01 | 刘海燕 | Fluorine-containing monofilament filter cloth and preparation method thereof |
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| CN1298970A (en) * | 1999-12-07 | 2001-06-13 | 魏传胜 | Technology for producing precisely woven filament filter cloth |
| CN1220801C (en) * | 2003-08-29 | 2005-09-28 | 江门市新会区工业胶丝厂有限公司 | High viscosity poly ester monofilament and its producing method and use |
| CN104178829A (en) * | 2014-07-30 | 2014-12-03 | 厦门怡龙谷新材料科技有限公司 | Composite large-diameter monofilament with variable cross section and skin core structure as well as manufacturing method and application thereof |
| CN104711746A (en) * | 2014-08-28 | 2015-06-17 | 厦门厦迪亚斯环保过滤技术有限公司 | Filter screen applied to phosphoric acid industry and weaving method thereof |
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Address after: 361100, No. 16 Chunfeng East Road, Torch High tech Zone (Xiang'an) Industrial Zone, Xiamen City, Fujian Province Patentee after: Xiamen Xiadias Filter Material Technology Co.,Ltd. Country or region after: China Address before: 361100 Unit 101-401, No. 8 Xianghong Road, Xiamen Torch High tech Zone (Xiang'an) Industrial Zone, Xiang'an District, Xiamen City, Fujian Province Patentee before: XIAMEN CITIUS ENVIRONMENT TECHNOLOGIES Co.,Ltd. Country or region before: China |
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