CN104178869A - Industrial filtering cloth and production method and application thereof - Google Patents
Industrial filtering cloth and production method and application thereof Download PDFInfo
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- CN104178869A CN104178869A CN201310191358.2A CN201310191358A CN104178869A CN 104178869 A CN104178869 A CN 104178869A CN 201310191358 A CN201310191358 A CN 201310191358A CN 104178869 A CN104178869 A CN 104178869A
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Abstract
The invention discloses industrial filtering cloth and a production method and application thereof. The filtering cloth is woven fabric formed by polyphenylene sulfide yarns of which the twist is 100-800T/M and the fineness is 280-2000dtex; the covering coefficient of the filtering cloth is 2000-3000, and the mean pore size of the filtering cloth is 1-30mum. The industrial filtering cloth disclosed by the invention has the characteristics that the trap precision is high, high temperature is resisted, acid and alkali corrosion is resisted, and the service life is long, and meanwhile, also has the characteristics of being low in production cost and high in production efficiency; the industrial filtering cloth disclosed by the invention can be widely applied to liquid filtration in the field of chemical industry or water treatment and the like.
Description
Technical field
The present invention relates to a kind of industrial filter cloth and production method thereof and purposes.
Background technology
Along with social progress, industrial expansion, as more and more higher to the requirement of liquid filtering technology in fields such as mining industry, chemical industry, food, environmental protection, so that also more and more higher to the requirement of filter cloth.Filter cloth, as a kind of widely used filter medium, plays an important role in isolated by filtration process, directly affects filter effect.And the material of filter cloth, the performance of filter cloth is played again to conclusive effect, this is not only filter cloth weaving process and rear process technology is proposed to higher requirement, the more important thing is the performance of fibrous material is proposed to higher requirement, existing common material filter cloth (as Polypropylene etc.) can not meet the instructions for use in Acidity of Aikalinity and hot environment completely.
As Chinese patent CN 101618289A discloses a kind of non-woven filter cloth that polyphenylene sulfide fibre is raw material of take, because the brute force of non-weaving cloth is low and average pore size is large, under the occasion of having relatively high expectations at filtering accuracy, cannot meet the requirement of filtration, affect filter effect.
And for example Chinese patent CN 101332384A discloses a kind of woven filter cloth that polypropylene fibre is raw material of take, due to polypropylene fiber silk non-refractory, under the higher occasion of filtration temperature, cannot meet the requirement of filtration, affect filter effect, and while running into strong acid, highly basic, polypropylene fiber silk is easily corroded.
Summary of the invention
The object of the present invention is to provide and a kind ofly hold back that precision is high, high temperature resistant, acid-alkali-corrosive-resisting, the industrial filter cloth of long service life.
Another object of the present invention is to provide the production method of the industrial filter cloth that a kind of production cost is low, production efficiency is high.
Technical solution of the present invention is: industrial filter cloth of the present invention is to be the formed woven fabric of polyphenylene sulfide yarn that 100～800T/M, fiber number are 280～2000dtex by the twist, the coverage coefficient of this filter cloth is 2000～3000, and the average pore size of this filter cloth is 1～30 μ m.When the twist of polyphenylene sulfide yarn is during lower than 100T/M, yarn strength is low, and filoplume is many, and impact is weaved; When the twist of polyphenylene sulfide yarn is during higher than 800T/M, easily there is twist contraction in yarn, can affect and weave.If the fiber number of polyphenylene sulfide yarn is less than 280dtex, because yarn is thinner, in weaving process, easily there is yarn breakage, if will improve this phenomenon, need carry out starching processing to yarn, will increase and weave cost like this; If the fiber number of polyphenylene sulfide yarn is greater than 2000dtex, the difficulty of beating up while weaving increases, and impact is weaved, and the fabric pore making is large, while being applied to liquid filtering as industrial filter cloth, low to the rejection of suspended matter.When the coverage coefficient of woven fabric is lower than 2000 time, larger as the average pore size of the filter cloth of liquid filtering, filtering accuracy reduces greatly; When the coverage coefficient of fabric is higher than 3000 time, the tightness of filter cloth is large, affects the rate of filtration, consumes the energy, thereby will increase cost.The coverage coefficient of fabric affects the average pore size of filter cloth, if the average pore size of filter cloth is less than 1 μ m, means that the coverage coefficient of filter cloth is very high, can seriously reduce the rate of filtration of filter cloth and improve cost; If the average pore size of filter cloth is greater than 30 μ m, the filtering accuracy of filter cloth is low, low to the rejection of suspended matter.Consider the double influence of filtering accuracy and the rate of filtration, the average pore size of filter cloth is 2～10 μ m preferably.
The warp-wise density of industrial filter cloth of the present invention is 150～200/10cm, and latitudinal density is 100～150/10cm.When the warp-wise density of filter cloth is lower than 150/10cm, latitudinal density is during lower than 100/10cm, and the average pore size of filter cloth is larger, lower to the rejection of the suspended matter of tiny particle diameter in liquid; When the warp-wise density of filter cloth is higher than 200/10cm, latitudinal density is during higher than 150/10cm, and the venting quality of filter cloth is less than normal, affects the rate of filtration, and the cost of filter cloth increases simultaneously, and difficulty of weaving improves, and production efficiency reduces.
When mensuration pressure is 125Pa, the venting quality of industrial filter cloth of the present invention is 10cm
3/ cm
2below/s.When the venting quality of filter cloth is higher than 10cm
3/ cm
2during/s, the average pore size of filter cloth is bigger than normal, lower to the rejection of the suspended matter of tiny particle diameter in liquid.
The warp tensile strength of industrial filter cloth of the present invention is 3000N～4500N/5cm, and weft tensile strength is 2000N～3500N/5cm.When the warp-wise intensity of filter cloth is lower than 3000N/5cm, latitudinal strength is during lower than 2000N/5cm, and filter cloth is subject to the impact of solution in filter process, easily causes fabric damage, affects filter effect; When the warp-wise intensity of filter cloth is higher than 4500N/5cm, latitudinal strength during higher than 3500N/5cm, so just need to improve the density of filter cloth, thereby not only increase cost but also affect production efficiency.
The production method of industrial filter cloth of the present invention, employing is that the polyphenylene sulfide yarn that 280～2000dtex, the twist are 100～800T/M is weaved on gripper shuttle loom or heavy pound arrow shaft loom through weft yarn fiber number, make grey cloth, in temperature, it is 80～100 ℃ again, speed is under 20～40m/min, to carry out refining, then at 130～180 ℃ of temperature, be dried, obtain finished product.Because the present invention need weave a kind of high-density fabric, and the Yarn filoplume adopting is more, and general loom cannot be weaved, and employing gripper shuttle loom or heavy pound arrow shaft loom beating-up dynamics are high, can make highdensity fabric.When refining temperature is during lower than 80 ℃, the stain on cloth cover is difficult for removing; When refining temperature is during higher than 100 ℃, not only consume the energy, but also increase production cost; When refining speed is during lower than 20m/min, refining speed is too low, can affect production efficiency; When refining speed is during higher than 40m/min, refining speed is higher, and refining agent can not fully contact with filter cloth, and the stain on cloth cover can not be completely clean; When baking temperature is during lower than 130 ℃, the filter cloth after refining is difficult for becoming dry, and dry production efficiency is lower; When baking temperature is during higher than 180 ℃, can increase energy resource consumption, increased to a certain extent production cost.
Industrial filter cloth of the present invention has that the precision of holding back is high, high temperature resistant, acid-alkali-corrosive-resisting, the feature of long service life, also have the feature that production cost is low, production efficiency is high, industrial filter cloth of the present invention can be widely used in the liquid filtering in the fields such as chemical industry or water treatment simultaneously.
The specific embodiment
Below by embodiment, illustrate in greater detail the present invention, but the present invention is not subject to the restriction of these embodiment.The assay method of each physical property of industrial filter cloth of the present invention is as follows.
[through latitudinal density]
According to JIS L1096 8.6 densimetrys, with pick glass measure fabric through latitudinal density.
[grammes per square metre]
According to JIS L1096 8.4.2 method, 3 of the experiment slices of clip 20cm * 20cm under standard state, each calls its quality in the following text in standard state, according to computing formula: grammes per square metre=mass/area, obtain the grammes per square metre of every experiment slice, average.
[venting quality]
According to JIS L1096 8.27.1A method, sample, under tension-free state, is placed on to test section, adjustable pressure 200Pa is for avoiding the repetition of test point, different from, the test point of suspension not to obtain by the oblique movement of sample during test, each sample is at least tested 5 times, averages.
[tensile break strength and elongation at break]
According to JIS L1096 8.12.1A method (base cloth pulls limit method), laboratory sample sample size is 30cm * 5cm, pulls the yarn of identical radical from the both sides on limit, makes to remain laboratory sample fabric width and meets regulation fabric width: 5cm.On stretching experiment machine, with clamp clamps sample two ends, chuck spacing is 20cm, under the speed of constant speed 20cm/min, and fracture strength when working sample is pulled off and elongation at break, every group of sample at least 3 times, averages.
[average pore size]
Utilize the flow average pore size of hole measuring instrument (U.S. Shi Duo Weir company) test filter cloth of hollow billet.One is entirely in sample that fountain solution the is saturated sample room as for sealing, and gas flows to sample room from sample.The gas pressure that computerizeds control, makes it slow increase, until it reaches the capillarity that is enough to overcome liquid corresponding to maximum diameter of hole, and Here it is so-called bubble point pressure.When pressure further increases with little increment, the gas flow that formation can be measured, until can be drained by flowing liquid.By dry-eye disease, also can produce the data of flow velocity to pressure, and be carried out real-time storage and demonstration.According to following formula, calculate average pore size:
D=4 γ cos θ/p, in formula: D=pore diameter,
The surface tension of γ=liquid,
θ=contact angle and,
P=pressure reduction.
[particle rejection]
Particle rejection adopts and once by constant pressure filtration method, measures.Under specified vacuum degree, to there being the suspended material of certain grain size distribution scope to filter, after filtration finishes, record the grain amount through filter cloth, in measured grain amount and suspension, the ratio of total grain amount is the particle rejection of this filter cloth.
Embodiment 1
Adopting warp, weft yarn fiber number is that the polyphenylene sulfide yarn that 1772dtex, the twist are 480T/M is weaved on heavy pound arrow shaft loom, making warp count is that 157/10cm, weft count are the plain cloth of 102/10cm, by above-mentioned plain cloth, in temperature, be that 90 ℃, speed are under 30m/min, to carry out refining again, then in temperature, be that at 150 ℃, to carry out cylinder dry, make coverage coefficient and be 2774, average pore size is the industrial filter cloth of 2.1 μ m.Each physical property of industrial filter cloth of the present invention is referring to table 1.
Embodiment 2
Adopting warp thread fiber number is the polyphenylene sulfide yarn that 882dtex, the twist are 360T/M, weft yarn fiber number is that the polyphenylene sulfide yarn that 295dtex, the twist are 200T/M is weaved on gripper shuttle loom, making warp count is that 200/10cm, weft count are the plain cloth of 130/10cm, by above-mentioned plain cloth, in temperature, be that 95 ℃, speed are under 40m/min, to carry out refining again, then in temperature, be that at 130 ℃, to carry out cylinder dry, make coverage coefficient and be 2163, average pore size is the industrial filter cloth of 4.0 μ m.Each physical property of industrial filter cloth of the present invention is referring to table 1.
Embodiment 3
Adopting warp thread, latitude fiber number is the polyphenylene sulfide yarn that 590dtex, the twist are 300T/M, on heavy pound arrow shaft loom, weave, making warp count is that 180/10cm, weft count are the plain cloth of 150/10cm, by above-mentioned plain cloth, in temperature, be that 98 ℃, speed are under 40m/min, to carry out refining again, then in temperature, be that at 140 ℃, to carry out cylinder dry, make coverage coefficient and be 2036, average pore size is the industrial filter cloth of 6.0 μ m.Each physical property of industrial filter cloth of the present invention is referring to table 1.
Embodiment 4
Adopting warp thread fiber number is the polyphenylene sulfide yarn that 1772dtex, the twist are 480T/M, weft yarn fiber number is that the polyphenylene sulfide yarn that 882dtex, the twist are 360T/M is weaved on gripper shuttle loom, wherein broadwise is the double weft mode of beating up, making warp count is that 150/10cm, weft count are the plain cloth of 188/10cm, by above-mentioned plain cloth, in temperature, be that 93 ℃, speed are under 40m/min, to carry out refining again, then in temperature, be that at 140 ℃, to carry out cylinder dry, make coverage coefficient and be 2660, average pore size is the industrial filter cloth of 3.4 μ m.Each physical property of industrial filter cloth of the present invention is referring to table 1.
Embodiment 5
Adopting warp, weft yarn fiber number is that the polyphenylene sulfide yarn that 1181dtex, the twist are 600T/M is weaved on heavy pound Rapier looms, making warp count is that 150/10cm, weft count are the plain cloth of 110/10cm, by above-mentioned plain cloth, in temperature, be that 92 ℃, speed are under 38m/min, to carry out refining again, then in temperature, be that at 160 ℃, to carry out cylinder dry, make coverage coefficient and be 2270, average pore size is the industrial filter cloth of 7.0 μ m.Each physical property of industrial filter cloth of the present invention is referring to table 1.
Embodiment 6
Adopting warp, weft yarn fiber number is that the polyphenylene sulfide yarn that 882dtex, the twist are 300T/M is weaved on heavy pound Rapier looms, making warp count is that 160/10cm, weft count are the plain cloth of 140/10cm, by above-mentioned plain cloth, in temperature, be that 95 ℃, speed are under 35m/min, to carry out refining again, then in temperature, be that at 170 ℃, to carry out cylinder dry, make coverage coefficient and be 2263, average pore size is the industrial filter cloth of 5.0 μ m.Each physical property of industrial filter cloth of the present invention is referring to table 1.
In embodiment 1～6, the industrial filter cloth of gained can be widely used in the liquid filtering in the fields such as chemical industry or water treatment.
Comparative example 1
Adopt the polyphenylene sulfide fibre that fiber number is 2.2dtex to carry out opener-carding-lapping-acupuncture, make fiber web, then this fiber web is carried out at 220 ℃ to HEAT SETTING, obtain ganoid filter felt, the fracture strength of this filter felt is warp-wise 616N/5cm, broadwise 1224 N/5cm, and average pore size is 40 μ m.Each physical property table of this filter felt is in Table 1.
Comparative example 2
Adopting warp, weft yarn fiber number is that the polyphenylene sulfide yarn that 2100dtex, the twist are 900T/M is weaved on heavy pound Rapier looms, making warp count is that 100/10cm, weft count are the plain cloth of 80/10cm, yarn generation twist contraction in weaving process, and after lower machine, find that cloth cover has wrinkle.By above-mentioned plain cloth, in temperature, being that 95 ℃, speed are under 40m/min, to carry out refining again, is then that at 150 ℃, to carry out cylinder dry in temperature, makes coverage coefficient and be 2211, average pore size is the industrial filter cloth of 32 μ m.Each physical property of this industrial filter cloth is referring to table 1.
Claims (7)
1. an industrial filter cloth, it is characterized in that: this filter cloth is to be the formed woven fabric of polyphenylene sulfide yarn that 100～800T/M, fiber number are 280～2000dtex by the twist, the coverage coefficient of this filter cloth is 2000～3000, and the average pore size of this filter cloth is 1～30 μ m.
2. industrial filter cloth according to claim 1, is characterized in that: the average pore size of this filter cloth is 2～10 μ m.
3. industrial filter cloth according to claim 1, is characterized in that: the warp-wise density of this filter cloth is 150～200/10cm, and latitudinal density is 100～150/10cm.
4. industrial filter cloth according to claim 1, is characterized in that: when mensuration pressure is 125Pa, the venting quality of this filter cloth is 10cm
3/ cm
2below/s.
5. industrial filter cloth according to claim 1, is characterized in that: the warp direction stretching fracture strength of this filter cloth is 3000N～4500N/5cm, and broadwise tensile break strength is 2000N～3500N/5cm.
6. the production method of an industrial filter cloth claimed in claim 1, it is characterized in that: adopting through weft yarn fiber number is that the polyphenylene sulfide yarn that 280～2000dtex, the twist are 100～800T/M is weaved on gripper shuttle loom or heavy pound arrow shaft loom, make grey cloth, in temperature, be that 80～100 ℃, speed are under 20～40m/min, to carry out refining again, then at 130～180 ℃ of temperature, be dried, obtain finished product.
7. an industrial filter cloth claimed in claim 1 is in the application in liquid filtering field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191358.2A CN104178869A (en) | 2013-05-22 | 2013-05-22 | Industrial filtering cloth and production method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191358.2A CN104178869A (en) | 2013-05-22 | 2013-05-22 | Industrial filtering cloth and production method and application thereof |
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|---|---|
| CN104178869A true CN104178869A (en) | 2014-12-03 |
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ID=51960202
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|---|---|---|---|
| CN201310191358.2A Pending CN104178869A (en) | 2013-05-22 | 2013-05-22 | Industrial filtering cloth and production method and application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986347A (en) * | 2015-02-28 | 2016-10-05 | 东丽纤维研究所（中国）有限公司 | Waterproof air-permeable film and manufacturing method thereof |
| WO2017032295A1 (en) * | 2015-08-24 | 2017-03-02 | 东丽纤维研究所（中国）有限公司 | High-performance polyphenylene sulphide fibre structure, preparation method therefor and use thereof |
| CN107723891A (en) * | 2017-11-01 | 2018-02-23 | 南通汇平高分子新材料有限公司 | A kind of preparation method of industrial filter cloth |
-
2013
- 2013-05-22 CN CN201310191358.2A patent/CN104178869A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986347A (en) * | 2015-02-28 | 2016-10-05 | 东丽纤维研究所（中国）有限公司 | Waterproof air-permeable film and manufacturing method thereof |
| CN105986347B (en) * | 2015-02-28 | 2019-04-19 | 东丽纤维研究所（中国）有限公司 | A kind of waterproof ventilated membrane and its manufacturing method |
| WO2017032295A1 (en) * | 2015-08-24 | 2017-03-02 | 东丽纤维研究所（中国）有限公司 | High-performance polyphenylene sulphide fibre structure, preparation method therefor and use thereof |
| CN107723891A (en) * | 2017-11-01 | 2018-02-23 | 南通汇平高分子新材料有限公司 | A kind of preparation method of industrial filter cloth |
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