CN105220257A - Brilliant and the modification monofilament of high-wearing feature of resistive connection and the preparation method of industrial filter screen - Google Patents
Brilliant and the modification monofilament of high-wearing feature of resistive connection and the preparation method of industrial filter screen Download PDFInfo
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- CN105220257A CN105220257A CN201510581151.5A CN201510581151A CN105220257A CN 105220257 A CN105220257 A CN 105220257A CN 201510581151 A CN201510581151 A CN 201510581151A CN 105220257 A CN105220257 A CN 105220257A
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- monofilament
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- modification
- wearing feature
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- 238000012986 modification Methods 0.000 title claims abstract description 28
- 230000004048 modification Effects 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims abstract description 19
- 238000009998 heat setting Methods 0.000 claims abstract description 16
- 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 26
- 229920001155 polypropylene Polymers 0.000 claims description 26
- 239000000126 substance Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000011265 semifinished product Substances 0.000 claims description 9
- 238000003490 calendering Methods 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- -1 polypropylene Polymers 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
- 230000008569 process Effects 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 10
- 238000002425 crystallisation Methods 0.000 abstract description 8
- 230000008025 crystallization Effects 0.000 abstract description 6
- 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 10
- 238000005299 abrasion Methods 0.000 description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 239000002243 precursor Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000004519 manufacturing process Methods 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
- 230000008901 benefit 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
- 239000003317 industrial substance Substances 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
- 230000009286 beneficial effect Effects 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
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005728 strengthening Methods 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 the brilliant and modification monofilament of high-wearing feature of resistive connection and the preparation method of industrial filter screen, comprise the steps such as raw material preparation, blended melting extruded monofilament, monofilament hot gas spring, HEAT SETTING, make full use of not viscosity and the hydrophobicity of ETFE, the material of filtration can be separated with filter screen completely, thus avoid the problem of material crystallization in filter screen hole, make the anti-wear performance of filter screen be greatly improved simultaneously.
Description
Technical field
The present invention relates to chemical field, be specially modification monofilament and the industrial filter screen of a kind of resistive connection crystalline substance and high-wearing feature.
Background technology
Monofilament is for using the one filament that the number obtained by multi-holed jet is larger in production of chemical fibre, and monofilament of different nature can be used for the product of meeting the different needs, as textiles, fishing lines, rope, industrial filter screen etc.
Industrial chemicals is indispensable important source material in industrial production, every industrial production nearly all be unable to do without industrial chemicals, wherein Inorganic Chemicals extraction and produce mainly come from mineral products, along with a large amount of exploitations of mineral products in recent years, the grade of ore is more and more lower, in ore, the extraction of useful mineral products becomes more and more difficult, therefore industrial filter screen just seems more and more important as the medium of filtration and separating mineral slurries, particularly non-ferrous metal industry, there is serious crystallization fouling in the industrial filter screen that phosphoric acid industry and titanium dioxide industry use, result in blockage filter screen, the strainability of filter screen is declined gradually, cause production capacity and the quality degradation of product, easily harden after filter screen crystallization simultaneously, toughness reduces, the ABRASION RESISTANCE of filter screen is also deteriorated, scrapping of whole piece filter screen can be caused after galling in local.The monofilament material that filter screen in the market adopts is based on polypropylene (PP), material is crystallization in filter screen grandson gap easily, causes filter screen pore plugging, simultaneously wearing no resistance due to PP material, reliable service life is no more than one month, does not reach the requirement of industry production completely.
Summary of the invention
The object of the present invention is to provide a kind of modification monofilament and industrial filter screen, to avoid the problem of material crystallization in filter screen hole, improve the anti-wear performance of filter screen simultaneously.
The invention discloses the preparation method of the modification monofilament of resistive connection crystalline substance and high-wearing feature, comprise the following steps:
S1. raw material preparation, is equipped with: wire drawing grade polypropylene (PP) 4 parts, ethylene-tetrafluoroethylene copolymer (ETFE) 1 part by weight ratio;
S2. blended melting extruded monofilament, by raw material good for above-mentioned outfit blended melting extruded monofilament in extrusion screw rod, the temperature that extrusion screw rod is each section is set to: feed zone 270 DEG C ~ 280 DEG C, 290 DEG C ~ 300 DEG C, compression section, metering section 300 DEG C ~ 310 DEG C, die head 310 DEG C ~ 315 DEG C;
S3. monofilament hot gas spring, the monofilament extruded from die head by step S2 obtains as-spun fibre through the water cooling of 60 DEG C ~ 80 DEG C, then carries out twice hot gas spring through the hot water of 90 DEG C ~ 100 DEG C and the hot blast of 120 DEG C ~ 140 DEG C successively, and total draft multiple is 6 ~ 6.5 times;
S4. monofilament HEAT SETTING, the monofilament after drawing-off carries out HEAT SETTING process through the hot blast of 130 DEG C ~ 150 DEG C and obtains modification monofilament.
Wherein, the melting means of described wire drawing grade polypropylene (PP) is 2 ~ 3g/10min, and the melting means of described ethylene-tetrafluoroethylene copolymer (ETFE) is 20 ~ 30g/min.
Preferably, in step S3, the tractive multiple of first hot gas spring accounts for 70% ~ 80% of total tractive multiple.
Modification monofilament of the present invention has following beneficial effect:
(1) adopt the PP monofilament through fluoroplastic modification, take full advantage of not viscosity and the hydrophobicity of ethylene-tetrafluoroethylene copolymer (ETFE), thus there is anti-crystallization energy.
(2) ETFE of the high melting means trade mark is selected, mainly contain the reason of two aspects: need to consider that the processing temperature of ETFE must be as far as possible close with the processing temperature of PP on the one hand, be conducive to both miscible like this, the decomposition causing a kind of material because processing temperature difference is large can be avoided simultaneously; On the other hand under same processing temperature, the ETFE of high melting means possesses good mobility, makes the surface migration that it is easier to monofilament, is conducive to like this making the surface characteristic of monofilament closer to ETFE.
(3) adopt hot water and hot blast twice hot gas spring when monofilament heat is led, first is preliminary draft, and drafting multiple accounts for the 70-80% of total draft multiple, and second is for strengthening drawing-off, and the tension being conducive to improving monofilament is like this powerful.And total draft multiple to control at 6-6.5 be doubly in order under the prerequisite ensureing strength of filament, will take into account the pliability of monofilament, multiple is too high simultaneously, the degraded toughness of monofilament, and multiple is too low, and the brute force of monofilament is not enough.By twice hot gas spring, intensity and the pliability of modification monofilament of the present invention all reach more satisfactory state.
The invention also discloses the preparation method of the industrial filter screen of resistive connection crystalline substance and high-wearing feature, after preparing modification monofilament by above-mentioned steps S1 ~ S4, carry out following steps again:
S5. weave filter screen, modification monofilament is carried out being woven into semi-finished product filter screen by the density of fabric and texture on heavy loom;
S6. filter screen HEAT SETTING, described semi-finished product filter screen carries out HEAT SETTING at the temperature of 120 DEG C ~ 150 DEG C;
Preferably, also comprise step S7 calendering shaping, semi-finished product filter screen carries out hot calendering after carrying out HEAT SETTING under calender, and temperature is 130 DEG C ~ 150 DEG C, and pressure is 4MPa ~ 6MPa.
Modification monofilament is used for industrial filter screen by the present invention, make full use of not viscosity and the hydrophobicity of ETFE, the material of filtration can be separated with filter screen completely, thus avoid the problem of material crystallization in filter screen hole, fiber surface coefficient of friction simultaneously through ETFE modification is significantly reduced, and the anti-wear performance of filter screen is greatly improved.Adopt high-temperature shaping and calendering techniques can improve the surface flatness of filter screen, the not viscosity of filter screen and ABRASION RESISTANCE are further enhanced.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.
Embodiment one
The preparation method of the modification monofilament of resistive connection crystalline substance and high-wearing feature, is characterized in that, comprise the following steps:
S1. filter screen raw material preparation, is equipped with by weight ratio.
The present embodiment selects raw material as follows:
Wire drawing grade polypropylene (PP), trade mark PPH-T03 (producer: Hainan petrochemical industry), melting means 2.17g/10min, 800g;
Ethylene-tetrafluoroethylene copolymer (ETFE, also known as F40), Teflon trade mark 750(producer: Dupont), molten finger 25g/10min, 200g.
S2. blended melting extruded monofilament, by raw material good for above-mentioned outfit blended melting extruded monofilament in extrusion screw rod, the temperature that extrusion screw rod is each section is set to: feed zone 270 DEG C ~ 280 DEG C, 290 DEG C ~ 300 DEG C, compression section, metering section 300 DEG C ~ 310 DEG C, die head 310 DEG C ~ 315 DEG C;
S3. monofilament hot gas spring, the monofilament extruded from die head by step S2 obtains as-spun fibre through the water cooling of 60 DEG C ~ 80 DEG C, more successively through twice hot gas spring.
(1) carry out preliminary draft through the hot water of 100 DEG C, drafting multiple is 5.2 times.
(2) carry out secondary drawing-off through the hot blast of 120 DEG C, drafting multiple is 1.3 times.
S4. monofilament HEAT SETTING, the monofilament after drawing-off carries out HEAT SETTING process through the hot blast of 130 DEG C ~ 150 DEG C and obtains modification monofilament.
Embodiment two
The preparation method of the modification monofilament of resistive connection crystalline substance and high-wearing feature, except step S3, all the other steps are identical with embodiment one.
S3. monofilament hot gas spring, the monofilament extruded from die head by step S2 obtains as-spun fibre through the water cooling of 60 DEG C ~ 80 DEG C, more successively through twice hot gas spring.
(1) carry out preliminary draft through the hot water of 90 DEG C, drafting multiple is 4.2 times.
(2) carry out secondary drawing-off through the hot blast of 140 DEG C, drafting multiple is 1.8 times.
Modification monofilament that above-described embodiment one, two prepares (be respectively PP fluorine richness silk 1#, PP fluorine richness silk 2# and PP precursor carry out wearability test, test process and result as follows:
Test apparatus: Reciprocating Wear test instrument, stroke 100mm, speed 30ind./min, wearing and tearing body is 60# sandstone.Test data is as shown in table 1.
The wearability test of table 1.PP fluorine richness monofilament 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 result of the test, the PP precursor that the modification monofilament prepared of the inventive method is more traditional, ABRASION RESISTANCE is better.
Embodiment three
The preparation method of the industrial filter screen of resistive connection crystalline substance and high-wearing feature, is characterized in that, comprise the following steps:
S1 ~ S4 is with embodiment two.
S5. weave filter screen, modification monofilament is carried out being woven into semi-finished product filter screen by the density of fabric and texture on heavy loom;
S6. filter screen HEAT SETTING, semi-finished product filter screen carries out HEAT SETTING at the temperature of 120 DEG C ~ 150 DEG C;
S7. calendering shaping, semi-finished product filter screen carries out hot calendering after carrying out HEAT SETTING under calender, and temperature is 130 DEG C ~ 150 DEG C, and pressure is 4MPa ~ 6MPa.
The industrial filter screen that the present embodiment prepares carries out following test:
(1) hydrophobicity
Testing equipment: contact angle measurement, measuring resolution 0.01 °, measuring accuracy 0.1 °.
Technical indicator: surface of solids water contact angle is greater than 90 ° and is hydrophobic surface.
Measurement data is as shown in table 2.
The hydrophobicity of table 2. PP fluorine richness of the present invention filter screen and conventional P P filter screen is tested
| Filter screen model | Contact angle/° |
| 2120(is unmodified) | 75±3 |
| FP2120(fluorine richness) | 115±5 |
As known from Table 2, the surface of solids water contact angle of the filter screen that the present embodiment obtains is greater than 90 °, is hydrophobic surface.Industrial filter screen is used for filtering and separating mineral slurries, adopt conventional P P filter screen, slurries are easily attached on filter screen, at a certain temperature, solute separates out fouling on filter screen with the form of crystal, and cause filter net jam, fluorine richness filter screen of the present invention is hydrophobicity, above slurries are not easily attached to, play the effect of resistive connection crystalline substance.
(2) ABRASION RESISTANCE detects
Estimate equipment: cloth abrasion instrument, 100# emery wheel, load 1000cN.
Measurement data is as shown in table 3.
The wearability test of table 3. PP fluorine richness of the present invention filter screen and conventional P P filter screen
| Filter screen model | Mass area ratio g/m 2 | Wearing and tearing quality g/m under 10000 turns 2 | Wearing and tearing quality accounts for mass area ratio and compares % |
| 2120 (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 wear intensity of filter screen of the present invention is low, and namely ABRASION RESISTANCE is good.
To sum up, anti-crystallization and the ABRASION RESISTANCE of the modification monofilament that the preparation method of modification monofilament disclosed by the invention and industrial filter screen prepares and industrial filter screen are good, and Suitable commercial is promoted.
The above, be only the present invention's preferably detailed description of the invention, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses, the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (5)
1. the preparation method of the modification monofilament of resistive connection crystalline substance and high-wearing feature, is characterized in that, comprise the following steps:
S1. raw material preparation, is equipped with: wire drawing grade polypropylene (PP) 4 parts, ethylene-tetrafluoroethylene copolymer (ETFE) 1 part by weight ratio;
S2. blended melting extruded monofilament, by raw material good for above-mentioned outfit blended melting extruded monofilament in extrusion screw rod, the temperature that extrusion screw rod is each section is set to: feed zone 270 DEG C ~ 280 DEG C, 290 DEG C ~ 300 DEG C, compression section, metering section 300 DEG C ~ 310 DEG C, die head 310 DEG C ~ 315 DEG C;
S3. monofilament hot gas spring, the monofilament extruded from die head by step S2 obtains as-spun fibre through the water cooling of 60 DEG C ~ 80 DEG C, then carries out twice hot gas spring through the hot water of 90 DEG C ~ 100 DEG C and the hot blast of 120 DEG C ~ 140 DEG C successively, and total draft multiple is 6 ~ 6.5 times;
S4. monofilament HEAT SETTING, the monofilament after drawing-off carries out HEAT SETTING process through the hot blast of 130 DEG C ~ 150 DEG C and obtains modification monofilament.
2. the preparation method of the modification monofilament of resistive connection crystalline substance as claimed in claim 1 and high-wearing feature, it is characterized in that, the melting means of described wire drawing grade polypropylene (PP) is 2 ~ 3g/10min, and the melting means of described ethylene-tetrafluoroethylene copolymer (ETFE) is 20 ~ 30g/10min.
3. the preparation method of the modification monofilament of resistive connection crystalline substance as claimed in claim 1 or 2 and high-wearing feature, it is characterized in that: in step S3, the tractive multiple of first hot gas spring accounts for 70% ~ 80% of total tractive multiple.
4. the preparation method of the industrial filter screen of the brilliant and high-wearing feature of resistive connection, is characterized in that, prepare modification monofilament by the step S1 ~ S4 described in any one of claims 1 to 3, then carries out following steps and obtain finished product filter screen:
S5. weave filter screen, modification monofilament is carried out being woven into semi-finished product filter screen by the density of fabric and texture on heavy loom;
S6. filter screen HEAT SETTING, described semi-finished product filter screen carries out HEAT SETTING at the temperature of 120 DEG C ~ 150 DEG C.
5. the preparation method of the industrial filter screen of the brilliant and high-wearing feature of resistive connection as claimed in claim 4, it is characterized in that, also comprise step S7 calendering shaping, semi-finished product filter screen carries out hot calendering after carrying out HEAT SETTING under calender, temperature is 130 DEG C ~ 150 DEG C, and pressure is 4MPa ~ 6MPa.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298970A (en) * | 1999-12-07 | 2001-06-13 | 魏传胜 | Technology for producing precisely woven filament filter cloth |
| CN1492086A (en) * | 2003-08-29 | 2004-04-28 | 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 |
-
2015
- 2015-09-14 CN CN201510581151.5A patent/CN105220257B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298970A (en) * | 1999-12-07 | 2001-06-13 | 魏传胜 | Technology for producing precisely woven filament filter cloth |
| CN1492086A (en) * | 2003-08-29 | 2004-04-28 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Publication date |
|---|---|
| CN105220257B (en) | 2017-11-07 |
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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 |