CN101392415A - Polyphenylene sulfide/polyester alloy fiber and preparation method - Google Patents
Polyphenylene sulfide/polyester alloy fiber and preparation method Download PDFInfo
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- CN101392415A CN101392415A CNA2008102022090A CN200810202209A CN101392415A CN 101392415 A CN101392415 A CN 101392415A CN A2008102022090 A CNA2008102022090 A CN A2008102022090A CN 200810202209 A CN200810202209 A CN 200810202209A CN 101392415 A CN101392415 A CN 101392415A
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Abstract
The invention relates to a polyphenylene thioether/polyester blended fiber which is characterized in that the fiber comprises raw materials according to parts by weight: 20 portions to 95 portions of polyphenylene thioether PPS, 4 portions to 6 portions of fire retardant and 0.1 portion to 10 portions of auxiliary agent. The preparation steps of the fiber include: drying before blending, blending and pelleting, drying before spinning, spinning, stretching and heat setting. The fiber has excellent properties of resistance to heat and humidity as well as to chemical corrosion and excellent mechanical properties, good spinning workability, comparatively low cost and correspondingly reduced energy consumption of spinning. The fiber can be used as an industrial filter material and can be widely applied to smoke dust filtration in the fields of thermal power generation, steelmaking, rubbish burning treatment, and the like, industries of paper making, printing and dyeing and medicines and food as well as the filtration of thermally corrosive liquid processed by high-temperature sewage during the smelting of nonferrous metals, and even can be used as textile material for flame retarding.
Description
Technical field
The present invention relates to a kind of polyphenylene sulfide/polyester alloy fiber and preparation method, the gained fiber is good and cheap, and the energy large-scale application belongs to chemical fiber field in the environment-protecting industrial filtering material.
Background technology
Main synthetic fiber are in the fire resistant filter material that existing improvement is polluted: the fiber of polyester (PET) fiber, polyamide (PA) fiber, polysulphonamide fiber, PPS fiber and common PET (polyester) and polyphenylene sulfide blended preparation, and their defective is as follows:
Adopt general PET (polyester) or PA66 (polyamide) or polysulphonamide fiber to make nonwoven pin felt.Its defective is the comprehensive needs that can not be applicable to high temperature, high humidity, pollution control that soda acid is complicated and changeable for a long time.
Because PPS has good heat resistance, chemical proofing and splendid flame retardant effect, particularly in hygrothermal environment, strength retention is more than 90%, under 190 ℃ of high temperature, can use for a long time, limited oxygen index LOI is 34, and electrical insulating property is good, has advantages such as good textile processibility.Therefore the PPS fiber is widely used as the extremely filtering material under the harsh environmental conditions such as high temperature, high humidity, chemical attack, can make Filters have long-life and high performance characteristics.But fibre-grade PPS cost of material is too expensive, and has shortened service life because impurity stops up in the use, has hindered the large-scale application of one pack system PPS fiber, therefore addresses the above problem and becomes very important.
Adopting PET (polyester) and polyphenylene sulfide blended preparation fiber, is the polyphenylene sulfide blended fibre of " major diameter high temperature polyphenylene sulfide blended fibre " introduction of 200610096711.9 as number of patent application, and the technology that is adopted has following deficiency or defective:
(1) described polyester is a normal polyester, and heat resistance is not good, and is not fire-retardant, rapid wear ring when high temperature uses, and service life is not long;
(2) implementation method that is adopted is directly extrusion molding after 340 ℃ of fusings with a certain amount of PPS and a certain amount of polyester, do not pass through the mixing granulation operation, but when spinning, mix, PPS and polyester can not be mixed like this, production efficiency is descended greatly.In addition, 340 ℃ spinning temperature can make the general purpose grade polyester that violent thermal degradation takes place;
(3) the resulting fibre section of cooling stretching diameter is 0.2-0.3mm, and so long-pending decline of ambassador's specific fiber surface of diameter greatly reduces filter efficiency.
Also have PET and the compound patent that is spun into sheath core fiber of PPS as 200610117544.1, but composite spinning equipment, complex process, cost is higher.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can reach the effect of better curbing environmental pollution, long service life, polyphenylene sulfide/polyester alloy fiber that production cost can reduce greatly and preparation method.
For realizing above purpose, technical scheme of the present invention provides a kind of polyphenylene sulfide/polyester blended fiber, it is characterized in that, is made up of following weight portion raw material:
20～95 parts of polyphenylene sulfides (PPS),
4～6 parts of fire retardants,
0.1～10 part of auxiliary agent.
Described fire retardant is a polyester PET; Described auxiliary agent is dolomol, calcium stearate, zinc stearate.
A kind of preparation method of polyphenylene sulfide/polyester blended fiber is characterized in that, the steps include:
It is dry before step 1. is mixed
Polyphenylene thioether PPS and fire retardant are placed the rotary drum inner drying respectively, be warmed up to 70～130 ℃ in six hours; Be no less than six hours in 70～130 ℃ of insulations then; Below 70 ℃ of coolings are arrived in one hour subsequently, when the blend granulation, take out to use two kinds of moisture being controlled at below the 40ppm of raw material;
Step 2. mixing granulation
Polyphenylene thioether PPS and described fire retardant and auxiliary agent mixed import material storage tube after 10 minutes-15 minutes, add the double screw extruder extruding pelletization, double screw extruder mixing granulation 1 to 16 district's temperature is respectively: a district: 90～120 ℃, two districts: 120～170 ℃, three districts: 180～220 ℃, four districts: 220～250 ℃, five districts: 240～270 ℃, six districts: 250～275 ℃, seven districts: 265～280 ℃, eight districts: 270～285 ℃, nine districts: 280～290 ℃, ten districts: 285～295 ℃, the Shi Yi district: 290～300 ℃, No.12 District: 295～305 ℃, Shi San district: 300～310 ℃, the Shi Si district: 305～315 ℃, the Shi Wu district: 310～320 ℃, 16 districts: 305～310 ℃;
Step 3. is spun preceding drying
To go up step gained pellet and place the dry rotary drum of using,, make below the moisture 40ppm of being controlled at of pellet 70～150 ℃ of dryings 10 hours-18 hours;
Step 4. spinning
Dried pellet is added the melt spinning machine inlet capable carry out spinning operation.Spinneret orifice adopts special-shaped spinneret orifices such as trilobal or Y font, also available circular spinneret orifice; The temperature in a district to six district that the co-blended spinning machine is set is as follows: 50 ℃～105 ℃ in a district, 280 ℃～305 ℃ in two districts, 295 ℃～320 ℃ in three districts, 285 ℃～320 ℃ in flange district, 275 ℃～315 ℃ in bend pipe district, 305 ℃-320 ℃ of spinning zones, spinning speed is 500～4000m/min, make polyphenylene sulfide/polyester long fiber tow, be clustered in material barrel, the boundling total fiber number: 20～700,000 dtex;
Step 5. stretching HEAT SETTING
Total multiplying power stretches: 2.8～6.0 times; One-level stretching ratio 2.8～4.0,50～125 ℃ of draft temperatures; 1.1～1.5 times of secondary drawing multiplying powers, 100～160 ℃ of draft temperatures; Heat setting temperature: 115 ℃～140 ℃ in I district, 135 ℃～160 ℃ in II district, 145 ℃～155 ℃ in III district, 100 ℃～125 ℃ in IV district, shaping time 15～45 minutes; Shearing length: below the staple fibre 25mm, long fiber 30～115mm.
The cross sectional shape of described drawing of fiber is circle or triangle, trilobal, and the Y font is spun into long fiber or staple fibre.
Advantage of the present invention is:
1, because the PET that uses solid phase to obtain, and is flame retardant type,, can obviously improves service life so its chemical resistance, heat-resisting quantity are more far better than conventional PET; The adding of additive simultaneously makes PET and PPS add mobile raising the in man-hour, and spinning temperature descends, and plays energy-conservation and the effect of reducing production costs;
2, the PET of fiber surface is exposed in chemicals, the hygrothermal environment, prolongation with service time, surface PET is corroded gradually, hydrolysis or pyrolysis, the surface can produce micropore increases specific area, thereby remedy because dust stops up the defective that the filter efficiency caused descends, can prolong filter material service life thus;
3, this fibre section is trilobal, Y font, and specific fiber surface is long-pending more much bigger than circular cross-section fiber specific surface area, helps improving filter efficiency;
4, adopt the bi-component co-blended spinning, clearly it can reduce cost than one pack system PPS fiber, this has established basis of price for the large-scale application of environmental pollution improvement, helps the extensive use of this filtering material, can obtain good economic benefit and environmental benefit.
Therefore, that fiber of the present invention can be used as is damp and hot, the filtering material under the chemical attack environment, both can be used as filtrating smoke dust material (such as making filter bag), as fields such as thermal power generation, steel-making, incineration treatment of garbage; Also can be used as liquid-state filter medium (needle fabric of this fiber or woven fabric), as the high temperature sewage treating material in papermaking, printing and dyeing, medicine food, the nonferrous metallurgical process.Can also be processed into drying machine with canvas, sewing thread, various protection cloth, heat-resisting dress material, brake with friction plate etc.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
PPS (polyphenylene sulfide) and high viscosity, flame retardant type PET (polyester) are placed respectively in the vacuum drum, be warmed up to 130 ℃ in six hours; Kept six hours at 130 ℃ then; After one hour, cool to 70 ℃ subsequently, when the blend granulation, take out and use.Two kinds of moisture being controlled at below the 40ppm of raw material.PPS and PET, calcium stearate are pressed mass ratio adding in 80: 19.9: 0.1 double screw extruder, double screw extruder mixing granulation 1 to 16 district's temperature is respectively: a district: 105 ℃ of two district: 170 ℃ of three district: 220 ℃ of four district: 250 ℃ of five district: 270 ℃ of six district: 272 ℃ of seven district: 278 ℃ of eight district: 285 ℃ of nine district: 288 ℃ of ten district: 293 ℃ of Shi Yi districts: 300 ℃ of No.12 Districts: 305 ℃ of Shi San districts: 310 ℃ of Shi Si districts: 315 ℃ of Shi Wu districts: 318 ℃ of 16 district: 308 ℃, melting mixing is even; Extruding pelletization is imported material storage tube then.The gained pellet is placed the Minton dryer of using when dry before above-mentioned mix,, make below the moisture 40ppm of being controlled at of pellet 150 ℃ of dryings 12 hours.Dried pellet is added the melt spinning machine inlet capable carry out spinning operation.Spinneret orifice adopts special-shaped spinneret orifices such as Y font.The temperature in a district to six district that the co-blended spinning machine is set is as follows: 95 ℃ in a district, and 295 ℃ in two districts, 320 ℃ in three districts, 325 ℃ in flange district, 318 ℃ in bend pipe district, 310 ℃ of spinning zones, spinning speed are 750m/min.The stretching HEAT SETTING is handled: 4.2 times of total multiplying powers that stretches; One-level stretching ratio 3.5,125 ℃ of draft temperatures; 154 ℃ of secondary drawing temperature.Heat setting temperature: 125 ℃ in I district, 160 ℃ in II district, 150 ℃ in III district, 120 ℃ in IV district, shaping time 30 minutes.Record intensity, modulus, elongation at break, 7 days strength retentions of 93 ℃, 48% sulfuric acid treatment and 93 ℃, 30%NaOH handle 7 days strength retentions and see Table 1.
Embodiment 2
Implementation method just changes PPS and PET, additive mass ratio into 70: 29.9: 0.1 with example one, and each district of blend granulation, each district of spinning, stretching HEAT SETTING are respectively distinguished temperature and descended 5 ℃ simultaneously.Record intensity, modulus, elongation at break, 7 days strength retentions of 93 ℃, 48% sulfuric acid treatment and 93 ℃, 30%NaOH handle 7 days strength retentions and see Table 1.
Embodiment 3
Implementation method is with example one, just the mass ratio of PPS and PET, additive changed into 60: 39.9: 0.1, and each district of blend granulation, spinning are respectively distinguished, the stretching HEAT SETTING is respectively distinguished temperature and descended 8 ℃ simultaneously.Record intensity, modulus, elongation at break, 7 days strength retentions of 93 ℃, 48% sulfuric acid treatment and 93 ℃, 30%NaOH handle 7 days strength retentions and see Table 1.
Reference examples
Implementation method just replaces high viscosity, flame retardant type PET with conventional PET with example one, and each district of blend granulation, each district of spinning, stretching HEAT SETTING are respectively distinguished temperature and descended 10 ℃ simultaneously.Record intensity, modulus, elongation at break, 7 days strength retentions of 93 ℃, 48% sulfuric acid treatment and 93 ℃, 30%NaOH handle 7 days strength retentions and see Table 1.
Table 1, four kinds of implementation method gained fibre properties contrast as following table:
| Blended fiber PPS content | Tensile strength cN/dtex | Young's modulus cN/dtex | Elongation at break % | 93 ℃, 7 days strength retention/% of 48% sulfuric acid treatment | 93 ℃, 30%NaOH are handled 7 days strength retention/% | |
| Embodiment 1 | 80％ | 3.9 | 52 | 15 | 100 | 100 |
| Embodiment 2 | 70％ | 4.2 | 49 | 18 | 98 | 98 |
| Embodiment 3 | 60％ | 4.7 | 47 | 21 | 98 | 98 |
| Reference examples | 80％ | 3.7 | 42 | 16 | 92 | 85 |
Annotate: in the table and above high molecular PET refer to by the solid phase polycondensation preparation, to have anti-flammability, inherent viscosity be 1.2 PET.
Claims (5)
1. a polyphenylene sulfide/polyester blended fiber is characterized in that, is made up of following weight portion raw material:
20～95 parts of polyphenylene sulfides (PPS),
4～6 parts of fire retardants,
0.1～10 part of auxiliary agent.
2. polyphenylene sulfide/polyester blended fiber according to claim 1 is characterized in that, described fire retardant is a polyester PET.
3. polyphenylene sulfide/polyester blended fiber according to claim 1 is characterized in that, described auxiliary agent is dolomol, calcium stearate, zinc stearate.
4. the preparation method of polyphenylene sulfide/polyester blended fiber according to claim 1 is characterized in that, the steps include:
It is dry before step 1. is mixed
Polyphenylene thioether PPS and fire retardant are placed the rotary drum inner drying respectively, be warmed up to 70～130 ℃ in six hours; Be no less than six hours in 70～130 ℃ of insulations then; Below 70 ℃ of coolings are arrived in one hour subsequently, when the blend granulation, take out to use two kinds of moisture being controlled at below the 40ppm of raw material;
Step 2. mixing granulation
Polyphenylene thioether PPS and described fire retardant and auxiliary agent mixed import material storage tube after 10 minutes-15 minutes, add the double screw extruder extruding pelletization, double screw extruder mixing granulation 1 to 16 district's temperature is respectively: a district: 90～120 ℃, two districts: 120～170 ℃, three districts: 180～220 ℃, four districts: 220～250 ℃, five districts: 240～270 ℃, six districts: 250～275 ℃, seven districts: 265～280 ℃, eight districts: 270～285 ℃, nine districts: 280～290 ℃, ten districts: 285～295 ℃, the Shi Yi district: 290～300 ℃, No.12 District: 295～305 ℃, Shi San district: 300～310 ℃, the Shi Si district: 305～315 ℃, Shi Wu district: 310～320 ℃ of 16 district: 305～310 ℃;
Step 3. is spun preceding drying
To go up step gained pellet and place the dry rotary drum of using,, make below the moisture 40ppm of being controlled at of pellet 70～150 ℃ of dryings 10 hours-18 hours;
Step 4. spinning
Dried pellet is added the melt spinning machine inlet capable carry out spinning operation.Spinneret orifice adopts special-shaped spinneret orifices such as trilobal or Y font, also available circular spinneret orifice; The temperature in a district to six district that the co-blended spinning machine is set is as follows: 50 ℃～105 ℃ in a district, 280 ℃～305 ℃ in two districts, 295 ℃～320 ℃ in three districts, 285 ℃～320 ℃ in flange district, 275 ℃～315 ℃ in bend pipe district, 305 ℃-320 ℃ of spinning zones, spinning speed is 500～4000m/min, make polyphenylene sulfide/polyester long fiber tow, be clustered in material barrel, the boundling total fiber number: 20～700,000 dtex;
Step 5. stretching HEAT SETTING
Total multiplying power stretches: 2.8～6.0 times; One-level stretching ratio 2.8～4.0,50～125 ℃ of draft temperatures; 1.1～1.5 times of secondary drawing multiplying powers, 100～160 ℃ of draft temperatures; Heat setting temperature: 115 ℃～140 ℃ in I district, 135 ℃～160 ℃ in II district, 145 ℃～155 ℃ in III district, 100 ℃～125 ℃ in IV district, shaping time 15～45 minutes; Shearing length: below the staple fibre 25mm, long fiber 30～115mm.
5. polyphenylene sulfide/polyester blended fiber according to claim 4 is characterized in that, the cross sectional shape of described drawing of fiber is circle or triangle, trilobal, and the Y font is spun into long fiber or staple fibre.
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| CNA2008102022090A CN101392415A (en) | 2008-11-04 | 2008-11-04 | Polyphenylene sulfide/polyester alloy fiber and preparation method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626574A (en) * | 2012-04-27 | 2012-08-08 | 江苏瑞泰科技有限公司 | Filter screen |
| CN102644130A (en) * | 2012-05-03 | 2012-08-22 | 东华大学 | Polyethylene naphthalate(PEN)/polyphenylene sulfide (PPS) blend filament and preparation method thereof |
| CN103060935A (en) * | 2013-01-10 | 2013-04-24 | 常熟鑫宇织造有限公司 | Production method of PPS (polyphenylene sulfite) and PET (polyethylene glycol terephthalate) blended and melted spun yarns |
| CN103835024A (en) * | 2012-11-23 | 2014-06-04 | 东丽纤维研究所（中国）有限公司 | Sea-island composite fiber, polyphenylene sulfide fiber bundle and fiber product |
| CN105536351A (en) * | 2016-01-21 | 2016-05-04 | 河南省安克林滤业有限公司 | Preparation method of flame-resistant washable filter material |
| CN109316828A (en) * | 2018-10-17 | 2019-02-12 | 江苏氟莱尔环保科技有限公司 | A kind of high-temperature filter cloth material |
| CN116575142A (en) * | 2023-07-14 | 2023-08-11 | 江苏恒力化纤股份有限公司 | Preparation method of polyphenylene sulfide fiber for porous clothing |
| CN116575133A (en) * | 2023-07-14 | 2023-08-11 | 江苏恒力化纤股份有限公司 | Preparation method of flame-retardant polyester fiber based on melt reaction extrusion |
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2008
- 2008-11-04 CN CNA2008102022090A patent/CN101392415A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626574A (en) * | 2012-04-27 | 2012-08-08 | 江苏瑞泰科技有限公司 | Filter screen |
| CN102644130A (en) * | 2012-05-03 | 2012-08-22 | 东华大学 | Polyethylene naphthalate(PEN)/polyphenylene sulfide (PPS) blend filament and preparation method thereof |
| CN102644130B (en) * | 2012-05-03 | 2014-04-02 | 东华大学 | Polyethylene naphthalate(PEN)/polyphenylene sulfide (PPS) blend filament and preparation method thereof |
| CN103835024A (en) * | 2012-11-23 | 2014-06-04 | 东丽纤维研究所（中国）有限公司 | Sea-island composite fiber, polyphenylene sulfide fiber bundle and fiber product |
| CN103060935A (en) * | 2013-01-10 | 2013-04-24 | 常熟鑫宇织造有限公司 | Production method of PPS (polyphenylene sulfite) and PET (polyethylene glycol terephthalate) blended and melted spun yarns |
| CN105536351A (en) * | 2016-01-21 | 2016-05-04 | 河南省安克林滤业有限公司 | Preparation method of flame-resistant washable filter material |
| CN109316828A (en) * | 2018-10-17 | 2019-02-12 | 江苏氟莱尔环保科技有限公司 | A kind of high-temperature filter cloth material |
| CN116575142A (en) * | 2023-07-14 | 2023-08-11 | 江苏恒力化纤股份有限公司 | Preparation method of polyphenylene sulfide fiber for porous clothing |
| CN116575133A (en) * | 2023-07-14 | 2023-08-11 | 江苏恒力化纤股份有限公司 | Preparation method of flame-retardant polyester fiber based on melt reaction extrusion |
| CN116575142B (en) * | 2023-07-14 | 2023-09-22 | 江苏恒力化纤股份有限公司 | Preparation method of polyphenylene sulfide fiber for porous clothing |
| CN116575133B (en) * | 2023-07-14 | 2023-09-22 | 江苏恒力化纤股份有限公司 | Preparation method of flame-retardant polyester fiber based on melt reaction extrusion |
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