CN117802620A - Processing technology of PPS composite fiber, PPS composite fiber and application - Google Patents
Processing technology of PPS composite fiber, PPS composite fiber and application Download PDFInfo
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- 239000000835 fiber Substances 0.000 title claims abstract description 107
- 239000002131 composite material Substances 0.000 title claims abstract description 71
- 238000012545 processing Methods 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 161
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 161
- MWDZOUNAPSSOEL-UHFFFAOYSA-N kaempferol Natural products OC1=C(C(=O)c2cc(O)cc(O)c2O1)c3ccc(O)cc3 MWDZOUNAPSSOEL-UHFFFAOYSA-N 0.000 claims abstract description 57
- LRDGATPGVJTWLJ-UHFFFAOYSA-N luteolin Natural products OC1=CC(O)=CC(C=2OC3=CC(O)=CC(O)=C3C(=O)C=2)=C1 LRDGATPGVJTWLJ-UHFFFAOYSA-N 0.000 claims abstract description 57
- 235000009498 luteolin Nutrition 0.000 claims abstract description 57
- -1 luteolin metal complex Chemical class 0.000 claims abstract description 26
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- 238000002844 melting Methods 0.000 claims abstract description 14
- 230000008018 melting Effects 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 11
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- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000007711 solidification Methods 0.000 claims abstract description 3
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- IQPNAANSBPBGFQ-UHFFFAOYSA-N luteolin Chemical compound C=1C(O)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(O)C(O)=C1 IQPNAANSBPBGFQ-UHFFFAOYSA-N 0.000 claims description 37
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- 235000013793 astaxanthin Nutrition 0.000 claims description 15
- MQZIGYBFDRPAKN-ZWAPEEGVSA-N astaxanthin Chemical compound C([C@H](O)C(=O)C=1C)C(C)(C)C=1/C=C/C(/C)=C/C=C/C(/C)=C/C=C/C=C(C)C=CC=C(C)C=CC1=C(C)C(=O)[C@@H](O)CC1(C)C MQZIGYBFDRPAKN-ZWAPEEGVSA-N 0.000 claims description 15
- 229940022405 astaxanthin Drugs 0.000 claims description 15
- 239000001168 astaxanthin Substances 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000011701 zinc Substances 0.000 claims description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 12
- 229910052725 zinc Inorganic materials 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 7
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 229920002545 silicone oil Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 150000004696 coordination complex Chemical class 0.000 claims description 2
- 150000004699 copper complex Chemical class 0.000 claims description 2
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 230000003078 antioxidant effect Effects 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003963 antioxidant agent Substances 0.000 description 7
- 235000006708 antioxidants Nutrition 0.000 description 7
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- 150000001875 compounds Chemical class 0.000 description 6
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- 230000014759 maintenance of location Effects 0.000 description 4
- 238000009941 weaving Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
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- QXTCFDCJXWLNAP-UHFFFAOYSA-N sulfidonitrogen(.) Chemical group S=[N] QXTCFDCJXWLNAP-UHFFFAOYSA-N 0.000 description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
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Abstract
The application relates to the technical field of filter materials, and particularly discloses a processing technology of a PPS composite fiber, the PPS composite fiber and application. The processing technology of the PPS composite fiber comprises the following steps: s1, mixing polyphenylene sulfide resin with a luteolin metal complex, heating, melting, extruding, granulating and drying to obtain polyphenylene sulfide composite resin; s2, carrying out melt spinning, spinneret ejection, cooling solidification and stretching on the polyphenylene sulfide composite resin to obtain the PPS composite fiber.
Description
Technical Field
The application relates to the technical field of filter materials, in particular to a processing technology of a PPS composite fiber, the PPS composite fiber and application.
Background
In the production process of thermal power generation, steel, cement and other industries, a large amount of dust is generated, so that serious pollution to the atmosphere is caused, and therefore, the national strict requirements on the atmospheric emission of the enterprises are formulated, and bag dust removal is an ideal dust removal mode widely used. The dust bag (filter bag) is called the heart of the bag house and plays a very important role in the dust removal effect. Two important factors for determining the quality of the dust bag are on one hand the material quality of the dust bag, such as high temperature resistance index, filtering precision, ventilation and the like; the other aspect is a manufacturing process of the dust removing bag.
The PPS filter bag, also called a polyphenylene sulfide fiber bag, is a product for introducing novel high-temperature resistant fibers. The physical properties of the fiber are superior to the original high-temperature resistant and acid-alkali resistant products in the market. The modified polypropylene has complete strength retention and inherent chemical resistance, can maintain good filtering performance in severe environments, and achieves ideal service life. The PPS cloth bag can be used at the temperature of about 160-190 ℃ for a long time, has good high temperature resistance and corrosion resistance, and has quite remarkable advantages particularly for sulfur-containing high-temperature flue gas discharged by a coal-fired boiler.
PPS is easily oxidized because of self structure, in high temperature filtration service environment, PPS can receive the combined action of oxynitride and sulfur oxide and high temperature oxygen that contain in the industrial flue gas, leads to PPS fiber easy oxidation fracture to reduce the crack strength of filter bag, and lose the filter effect because of the PPS filter bag fracture, thereby influence the dust removal efficiency of filter.
Therefore, although the PPS fiber has better temperature resistance, acid and alkali resistance and corrosion resistance, the PPS fiber has poorer oxidation resistance, and the dust removal efficiency of the prepared PPS filter bag product is easily reduced under special working conditions.
Disclosure of Invention
In order to improve the technical problems, the application provides a processing technology of a PPS composite fiber, the PPS composite fiber and application, and the PPS composite fiber provided by the application has excellent heat resistance and oxidation resistance.
In order to achieve the technical purpose, the application provides a processing technology of PPS composite fiber, which adopts the following technical scheme:
a processing technology of PPS composite fiber comprises the following steps:
s1, mixing polyphenylene sulfide resin with a luteolin metal complex, heating, melting, extruding, granulating and drying to obtain polyphenylene sulfide composite resin;
s2, carrying out melt spinning, spinneret ejection, cooling solidification and stretching on the polyphenylene sulfide composite resin to obtain the PPS composite fiber.
Preferably, the luteolin metal complex is selected from a luteolin iron complex, a luteolin zinc complex, a luteolin copper complex or a luteolin calcium complex.
Preferably, in step S1, the temperature of the heating and melting is 336-340 ℃.
Preferably, in step S2, the temperature of the melt spinning is 340-345 ℃.
Preferably, in step S2, the spinneret plate is a 800-1200 hole spinneret plate.
Preferably, in step S2, the stretching ratio is 4 to 5 times.
By adopting the technical scheme, luteolin is a plant chemical substance, belongs to flavonoid compounds, and mainly exists in vegetables, fruits and Chinese herbal medicines in the form of glycoside. The luteolin belongs to a natural antioxidant, has the functions of resisting oxidation and scavenging free radicals, and because of the natural greenness, the melting point and the decomposition temperature of 330 ℃, the luteolin and the polyphenylene sulfide are selected for blending spinning, and the luteolin can compete for oxidizing the free radicals in the PPS filtering use process, so that the oxidation resistance of the PPS filter bag is improved.
Although the luteolin has a decomposition temperature of up to 330 ℃, the thermal stability (200 ℃/7 d) is lower than that of polyphenylene sulfide, and the luteolin metal complex is synthesized before blending and spinning with the polyphenylene sulfide, so that the thermal stability of the luteolin can be improved, the melting temperature (280-290 ℃) of the polyphenylene sulfide and the use of the polyphenylene sulfide at high temperature are applicable, and the antioxidant activity of the original ligand, namely the luteolin, can be further improved.
More preferably, the mass ratio of the polyphenylene sulfide resin to the luteolin metal complex is 1 (0.01-0.05).
By adopting the technical scheme, the addition amount of the luteolin metal complex is increased as much as possible on the premise of not affecting the strength of the PPS composite fiber, and 1 (0.01-0.05) is the optimal mass ratio of the polyphenylene sulfide resin to the luteolin metal complex.
The application also provides a PPS composite fiber which is prepared by the processing technology.
The application also provides a PPS filter bag, including two-layer PPS fibrofelt to and the composite felt of pressing from both sides between two-layer PPS fibrofelt, the PPS fibrofelt is woven by foretell PPS composite fiber and is formed, the composite felt is woven by foretell PPS composite fiber and strap, the strap is woven and is continuous latticed.
By adopting the technical scheme, the main material of the PPS filter bag is the fiber felt woven by PPS composite fibers, and has higher temperature resistance and oxidation resistance. In addition, the PPS filter bag provided by the application is composed of three layers of fiber felts, has extremely high filtering performance, the middle fiber felts are composite felts, and metal belts in the composite felts have a conductive effect, so that the PPS filter bag is endowed with a certain antistatic effect.
Further preferably, the PPS fiber mat is further impregnated with a coating liquid, which is composed of the following components in percentage by mass: 15-30% PTFE dispersion, 1-3% silicone oil emulsion, 0.5-1% astaxanthin, 5-10% montmorillonite and the balance of water.
By adopting the technical scheme, the astaxanthin is a chain-breaking antioxidant, has extremely strong antioxidant capacity, is the most efficient antioxidant in the currently known natural substances, and can remove nitrogen dioxide, sulfides, disulfides and the like. The astaxanthin has a melting point of 234 ℃ and a decomposition temperature of more than 250 ℃, so that the astaxanthin can be applied to the high-temperature antioxidant field, and can be added into the coating liquid to form a layer of coating with oxidation resistance and preliminary decomposition of nitrogen sulfide on the surface of the PPS fiber felt. The montmorillonite has a certain desulfurization effect and can adsorb nitrogen sulfide, so that the astaxanthin can fully decompose the nitrogen sulfide.
In summary, the present application has the following beneficial effects:
(1) According to the preparation method, the luteolin metal complex and the polyphenylene sulfide resin are adopted for blending melt spinning, and the luteolin self-polyphenol structure and the high thermal stability after being coordinated with metal are adopted, so that the PPS composite fiber can be endowed with excellent temperature resistance and oxidation resistance;
(2) According to the method, the coating is arranged on the surface of the PPS composite fiber, the filtering and oxidation resistance of the fiber can be further improved, and the PPS composite fiber has certain capability of decomposing nitrogen and sulfur compounds;
(3) The PPS filter bag provided by the application consists of three layers of fiber felts, has extremely high filtering performance, and has excellent antistatic performance, wherein the middle layer is a metal composite layer;
drawings
FIG. 1 is a schematic view of a filter bag according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a middle layer composite felt in the filter bag of the present application.
Reference numerals: 1. PPS fiber felt; 2. a composite felt; 3. a metal strip.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples.
The brand of the polyphenylene sulfide resin is Japanese Dongli A504; the silicone oil emulsion was purchased from Shandong energy-accumulating chemical Co., ltd, and had a solid content of 60%; luteolin is purchased from Shaanxi North Biotechnology Co., ltd; astaxanthin was purchased from western amp Musen bioengineering limited.
A processing technology of PPS composite fiber comprises the following steps:
s1, mixing polyphenylene sulfide resin and luteolin metal complex according to the mass ratio of 1 (0.01-0.05), heating and melting at 336-340 ℃, extruding, granulating and drying to obtain polyphenylene sulfide composite resin;
s2, spinning the polyphenylene sulfide composite resin in a melt spinning machine: spinning by a screw extruder at 335-350 ℃ and a spinning box, cooling and solidifying by a 800-1200 hole spinneret plate, and stretching at 4-5 times of draft ratio to obtain the PPS composite fiber.
Wherein the metal complex of luteolin is selected from iron complex of luteolin, zinc complex of luteolin, copper complex of luteolin or calcium complex of luteolin. The zinc luteolin complex is only exemplified in the examples of the present application.
The zinc luteolin complex is self-made, and the preparation method comprises the following steps: 0.5mol luteolin and 0.5mol Zn (Ac) were added to 500mL of absolute ethanol solvent 2 Stirring and dissolving the solid at 60 ℃ until the solution is completely clarified, regulating the pH value to 9.7 by using a 1mol/L NaOH solution, heating to 80 ℃, stirring and reacting for 6 hours, washing the precipitate with ethanol and water respectively for 3 times, and drying at 35 ℃ for 24 hours to obtain the solid.
The PPS filter bag has a structure shown in figure 1 and comprises two layers of PPS fiber felts 1 and a composite felt 2 clamped between the two layers of PPS fiber felts, wherein the PPS fiber felts are woven by PPS composite fibers, the composite felt is woven by PPS composite fibers and metal belts 3, and the metal belts 3 are in continuous grid shapes in the composite felt.
The PPS fiber felt is also impregnated with a coating liquid, and the coating liquid comprises the following components in percentage by mass: 15-30% PTFE dispersion, 1-3% silicone oil emulsion, 0.5-1% astaxanthin, 5-10% montmorillonite and the balance of water. The dipping steps are as follows: and (3) dipping the PPS fiber felt in coating liquid, rolling, shaping and calendaring to obtain the PPS fiber felt with the surface coated with the coating.
Examples
Example 1
A PPS composite fiber consists of polyphenylene sulfide resin and a zinc luteolin complex according to the mass ratio of 1:0.008, and is prepared by the following steps:
s1, mixing polyphenylene sulfide resin and luteolin metal complex, heating and melting at 336 ℃, extruding and granulating, and drying at 70 ℃ to obtain polyphenylene sulfide composite resin;
s2, spinning the polyphenylene sulfide composite resin in a melt spinning machine, setting the four sections of temperature of a screw extruder, a spinning box body and the screw extruder to 335 ℃/345 ℃/350 ℃/340 ℃ to obtain a spinning melt, spraying out the spinning melt by an 800-hole spinneret plate, circularly blowing nitrogen to 330MPa, wherein the spinning speed is 500m/min, cooling the sprayed semi-finished yarn, stretching the yarn by 5 times of draft ratio to obtain filaments, and chopping the filaments to obtain the PPS composite fiber.
Example 2
A PPS composite fiber consists of polyphenylene sulfide resin and a zinc luteolin complex according to the mass ratio of 1:0.008, and is prepared by the following steps:
s1, mixing polyphenylene sulfide resin with a luteolin metal complex, heating and melting at 338 ℃, extruding and granulating, and drying at 70 ℃ to obtain polyphenylene sulfide composite resin;
s2, spinning the polyphenylene sulfide composite resin in a melt spinning machine, setting the four sections of temperature of a screw extruder, a spinning box body and the screw extruder to 335 ℃/345 ℃/350 ℃/340 ℃ to obtain a spinning melt, spraying out the spinning melt by a 1000-hole spinneret plate, circularly blowing nitrogen to 330MPa, wherein the spinning speed is 500m/min, cooling the sprayed semi-finished yarn, stretching the cooled semi-finished yarn by 4.5 times of draft ratio to obtain filaments, and chopping the filaments to obtain the PPS composite fiber.
Example 3
A PPS composite fiber consists of polyphenylene sulfide resin and a zinc luteolin complex according to the mass ratio of 1:0.008, and is prepared by the following steps:
s1, mixing polyphenylene sulfide resin with a luteolin metal complex, heating and melting at 340 ℃, extruding and granulating, and drying at 70 ℃ to obtain polyphenylene sulfide composite resin;
s2, spinning the polyphenylene sulfide composite resin in a melt spinning machine, setting the four sections of temperature of a screw extruder, a spinning box body and the screw extruder to 335 ℃/345 ℃/350 ℃/340 ℃ to obtain a spinning melt, spraying out the spinning melt by a 1200-hole spinneret plate, circularly blowing nitrogen to 330MPa, wherein the spinning speed is 450m/min, cooling the sprayed semi-finished yarn, stretching the yarn by 4 times of draft ratio to obtain filaments, and chopping the filaments to obtain the PPS composite fiber.
Example 4
The PPS composite fiber has the same raw material components and preparation steps as in example 1, and the difference from example 1 is that the mass ratio of the polyphenylene sulfide resin to the luteolin zinc complex is 1:0.01.
Example 5
The PPS composite fiber has the same raw material components and preparation steps as in example 1, and the difference from example 1 is that the mass ratio of the polyphenylene sulfide resin to the luteolin zinc complex is 1:0.03.
Example 6
The PPS composite fiber has the same raw material components and preparation steps as in example 1, and the difference from example 1 is that the mass ratio of the polyphenylene sulfide resin to the luteolin zinc complex is 1:0.05.
Example 7
The PPS composite fiber has the same raw material components and preparation steps as in example 1, and the difference from example 1 is that the mass ratio of the polyphenylene sulfide resin to the luteolin zinc complex is 1:0.07.
Comparative example
Comparative example 1
A PPS fiber is different from example 1 in that the raw material component is 100% polyphenylene sulfide resin.
Comparative example 2
The preparation process of the PPS composite fiber is the same as that of example 1, and the difference of the PPS composite fiber and the example 1 is that the raw material components consist of polyphenylene sulfide resin and luteolin according to the mass ratio of 1:0.008.
Performance detection
The fibers prepared in examples 1 to 7 and preparations 1 to 2 were subjected to performance test, and the test results are shown in Table 1 below.
Breaking strength: the fibers were drawn using a single fiber drawing machine at a drawing speed of 20.+ -.1 mm/min, the breaking strength of each fiber was recorded, and each group of samples was tested 35 times, and the average value was taken.
Oxidation resistance: and (3) immersing the sample in 5g/L potassium permanganate solution, taking out, cleaning and drying after 48 hours, and testing the breaking strength of the sample.
Thermal stability: after the fiber sample was subjected to high temperature treatment at 204℃for 1200 hours, the breaking strength was measured, and the thermal shrinkage was measured by using a YG369S single fiber thermal shrinkage tester.
Table 1 test results for examples, comparative examples
As can be seen from the test results of examples 1-7, the PPS composite fiber prepared by the application has the breaking strength of 5.45-5.70cN/dtex, the strong retention rate of 97.1% or more after being treated by 5g/L potassium permanganate solution for 48 hours, the maximum retention rate of 98.9% or more after being treated for 1200 hours at 204 ℃, the strong retention rate of 97.9% or more, the heat shrinkage rate of less than 1.2%, and higher heat stability.
Comparing the test results of example 1 and comparative example 1 shows that the addition of the luteolin metal complex can significantly improve the oxidation resistance and the thermal stability of the PPS fiber, which indicates that the luteolin metal complex is fully fused with the polyphenylene sulfide resin and stably plays a role.
As can be seen from comparing the test results of example 1 and comparative example 2, the oxidation resistance and thermal stability of the obtained composite fiber are slightly improved by directly melting, granulating and spinning the luteolin and the polyphenylene sulfide resin, because the luteolin has a higher melting point and decomposition temperature, but the thermal stability of the luteolin is poor, and the luteolin is extremely easy to generate high-temperature self-oxidation and other conditions although not decomposed in the process of being melted with the polyphenylene sulfide resin at high temperature, so that the luteolin cannot exist in the PPS composite fiber stably, and cannot exert stable oxidation resistance.
Comparing the test results of examples 1 and 4-7, it can be seen that as the addition amount of the luteolin metal complex is increased, the initial strength of the PPS fiber is lower and lower, but the oxidation resistance and thermal stability of the PPS fiber are better and better, and comprehensively considered, when the mass ratio of the polyphenylene sulfide resin to the luteolin metal complex is set to 1 (0.01-0.05), the PPS composite fiber has the highest oxidation resistance, and the thermal stability is higher, the processing is carried out at 204 ℃ for 1200 hours, the strength is almost free from loss, and the thermal shrinkage is less than 1.0%, wherein example 5 is the best example.
Application example
Application example 1
A PPS filter bag is formed by compounding two layers of PPS fiber felts 1 and a compound felt 2 which is clamped between the two layers of PPS fiber felts, wherein the PPS fiber felts are formed by weaving PPS compound fibers, the compound felt is formed by weaving PPS compound fibers and metal strips 3, the metal strips 3 are in a continuous grid shape in the compound felt, and the metal strips are made of stainless steel strips.
Wherein PPS composite fibers were produced by the processing procedure of example 5.
Application example 2
A PPS filter bag is formed by compounding two layers of PPS fiber felts 1 and a compound felt 2 which is clamped between the two layers of PPS fiber felts, wherein the PPS fiber felts are formed by weaving PPS compound fibers, the compound felt is formed by weaving PPS compound fibers and metal strips 3, the metal strips 3 are in a continuous grid shape in the compound felt, and the metal strips are made of stainless steel strips.
The PPS composite fiber is prepared by the processing technology of the embodiment 5, and after the PPS composite fiber is prepared into a fiber felt, the PPS composite fiber is further subjected to dip coating liquid post-treatment, wherein the specific dipping steps are as follows: and (3) dipping the PPS fiber felt in coating liquid, rolling, shaping and calendaring to obtain the PPS fiber felt with the surface coated with the coating.
The coating liquid consists of the following components: 30kg of PTFE dispersion with a solid content of 65%, 3kg of silicone oil emulsion, 1kg of astaxanthin, 5kg of montmorillonite and 61kg of water. And (3) uniformly mixing and dispersing PTFE dispersion liquid, silicone oil emulsion, astaxanthin and montmorillonite, and then adding water for continuous and uniform dispersion to obtain the coating liquid.
Comparative application example
Comparative application example 1
The PPS filter bag has the same raw material components and structural composition as in application example 2, and is different from application example 2 in that the coating liquid consists of the following components: 30kg of PTFE dispersion with a solid content of 65%, 3kg of silicone oil emulsion, 5kg of montmorillonite and 62kg of water.
Performance detection
The PPS filter bags prepared in the application examples and comparative application examples were subjected to a filtration performance test, and the test results are shown in table 2 below.
Concentration of fine dust: at 25 ℃, the flue gas is introduced into a dust removal and filtration system provided with a filter felt for carrying out a micro powder dust filtration test, the flow rate of the flue gas is 0.5m/s, and the concentration of micro powder dust in the flue gas before and after filtration is respectively measured by adopting a dust detector.
Denitration rate: at 25 ℃, introducing a flue gas sample into a denitration system provided with a filter felt, wherein the flow rate of the flue gas is 0.5m/s, and measuring the concentration C of nitrogen oxides before denitration by adopting a nitrogen oxide detector 1 And nitrogen oxide concentration C after denitration 2 According to the formula η= (C 1 -C 2 )/C 1 The out-of-stock efficiency was calculated by x 100%.
Table 2 application example performance test results
As can be seen from the test results of application examples 1-2, the PPS filter bag prepared by the application example 2 has extremely high micro dust filtration efficiency, the PPS fiber felt in the filter bag is also subjected to coating liquid dipping treatment, and a smooth and easy-to-clean coating capable of adsorbing and denitrating can be formed on the surface, so that the PPS filter bag has the capability of primarily treating nitrogen and sulfur compounds, and the denitration efficiency reaches 98.6%.
As can be seen from comparing the test results of application example 2 and comparative application example 1, the addition of astaxanthin in the coating layer can further improve the denitration treatment capability of the PPS filter bag, because astaxanthin itself has the capability of removing substances such as nitrogen dioxide, sulfides, disulfides and the like. The melting point of the astaxanthin is 234 ℃, the decomposition temperature is up to more than 250 ℃, the astaxanthin is suitable for high-temperature filtering environment, and the astaxanthin is the most efficient antioxidant in natural substances, and meanwhile, the antioxidant capacity of the PPS fiber mat can be improved.
The above description is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above examples, and all technical solutions belonging to the concept of the present application belong to the protection scope of the present application. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present application are intended to be comprehended within the scope of the present application.
Claims (10)
1. The processing technology of the PPS composite fiber is characterized by comprising the following steps of:
s1, mixing polyphenylene sulfide resin with a luteolin metal complex, heating, melting, extruding, granulating and drying to obtain polyphenylene sulfide composite resin;
s2, carrying out melt spinning, spinneret ejection, cooling solidification and stretching on the polyphenylene sulfide composite resin to obtain the PPS composite fiber.
2. The process for preparing PPS composite fiber according to claim 1, wherein the mass ratio of the polyphenylene sulfide resin to the luteolin metal complex is 1 (0.01-0.05).
3. The process for preparing PPS composite fiber according to claim 1, wherein the metal complex of luteolin is selected from the group consisting of iron complex of luteolin, zinc complex of luteolin, copper complex of luteolin and calcium complex of luteolin.
4. The process for producing PPS composite fiber according to claim 1, wherein in step S1, the temperature of the heat fusion is 336 to 340 ℃.
5. The process for producing PPS composite fiber according to claim 1, wherein in step S2, the temperature of the melt spinning is 335 to 350 ℃.
6. The process for producing PPS composite fiber according to claim 1, wherein in step S2, the spinneret plate is a 800-1200-hole spinneret plate.
7. The process for producing PPS composite fiber according to claim 1, wherein in step S2, the drawing ratio of the drawing is 4 to 5 times.
8. A PPS composite fiber, characterized in that it is produced by the processing process according to any one of claims 1 to 7.
9. The PPS filter bag is characterized by comprising two layers of PPS fiber felts and a composite felt clamped between the two layers of PPS fiber felts, wherein the PPS fiber felts are woven by the PPS composite fibers of claim 8, the composite felt is woven by the PPS composite fibers of claim 8 and metal belts, and the metal belts are in continuous grid shapes in the composite felt.
10. The PPS filter bag of claim 9, wherein the PPS fiber mat is further impregnated with a coating liquid consisting of the following components in mass percent: 15-30% PTFE dispersion, 1-3% silicone oil emulsion, 0.5-1% astaxanthin, 5-10% montmorillonite and the balance of water.
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| CN202311868061.5A CN117802620A (en) | 2023-12-29 | 2023-12-29 | Processing technology of PPS composite fiber, PPS composite fiber and application |
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| CN202311868061.5A CN117802620A (en) | 2023-12-29 | 2023-12-29 | Processing technology of PPS composite fiber, PPS composite fiber and application |
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