CN103041648B - A kind of base cloth for filter material - Google Patents
A kind of base cloth for filter material Download PDFInfo
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- CN103041648B CN103041648B CN201110333488.6A CN201110333488A CN103041648B CN 103041648 B CN103041648 B CN 103041648B CN 201110333488 A CN201110333488 A CN 201110333488A CN 103041648 B CN103041648 B CN 103041648B
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Abstract
The invention discloses a kind of base cloth for filter material, this base cloth is formed by warp thread and weft yarns, the filling yarn forming this base cloth is the high-temperature heat-resistance yarn of fiber number between 240 ~ 1500 daniers, contains the polytetrafluoroethylene (PTFE) yarn that fiber number is 240 ~ 1500 daniers in described warp thread and/or weft yarn.Base cloth for filter material of the present invention has good chemical resistance medicament, non-oxidizability, dimensional stability, but also has higher hot strength, excellent venting quality, can improve the strainability of filtering material, extends the feature in the service life of filtering material.
Description
Technical field
The present invention relates to a kind of base cloth for filter material.
Background technology
Along with the progress of world today's science and technology, the enhancing of people's environmental consciousness, environmental improvement idea turns to watershed management by end treatment, i.e. decreasing pollution.For field of air filtration, increasing coal-burning power plant, garbage burning factory adopt sack cleaner both at home and abroad.Sack cleaner administers one of industrialness dust and the most effective technical equipment of flue dust both at home and abroad.But power-plant flue gas temperature is generally at 120 ~ 160 DEG C, what be adapted at the use of this temperature section only has Nomex, PPS, P84, PTFE.The rear three kinds of differences of Nomex chemical property, do not select, and P84, PTFE are applicable to exceeding 200 DEG C of uses, and price more expensive, current plant boiler mostly adopts polyphenylene sulfide (PPS) filter bag that cost performance is high, but also has weak point, mainly O in flue gas in its application
2and NO
2under effect, along with temperature is higher, cause that PPS oxide etch is serious, resistance is large, when running incorrect, life-span of the filter bag only has 2 ~ 3 years, and PPS can degrade because of oxidation, so that variable color embrittlement, and time serious, the fleece of felt body can be broken and depart from base cloth.Therefore, a lot of industrial smoke temperature is high, corrosivity strong, and this just requires that our filtrate must towards the development of high temperature resistant, corrosion-resistant aspect.But base cloth is all made up of PTFE yarn, price is very expensive.
After polyphenylene sulfide and polytetrafluoroethylene (PTFE) two kinds of high-temperature heat-resistance fiber blends being adopted to the core material base cloth of filter bag in publication CN201257337, make yarn, be made into Ji Bu.This method for weaving is complicated and polyphenylene sulfide is bad with polytetrafluoroethylene (PTFE) two kinds of short fiber cohesive forces, easily cause the blended yarns made and Ji Bu brute force low, thus reduce the service life of filter felt, and filter bag dimensional stability in use need investigation.
As being all that fire resistance is good for the selection of scrim material in publication CN101748549A, all fire-retardant composite yarn structure through weft yams, be composited by heart yarn and skin yarn, heart yarn adopts fire-retardant filament raw material, skin yarn adopts fire retardant staple length fibers raw material, wherein the chemical resistance medicament of long filament, heat-resisting quantity are relatively good, but the chemical resistance medicament of skin yarn, heat-resisting quantity are poor, thus cause base cloth non-refractory, the chemical resistance medicament difference and production process is complicated made.
Summary of the invention
The object of the present invention is to provide and a kind of there is good chemical resistance medicament, non-oxidizability, dimensional stability, but also there is the base cloth for filter material of higher hot strength, excellent venting quality.
Technical solution of the present invention is:
Base cloth for filter material of the present invention, this base cloth is formed by warp thread and weft yarns, the warp thread and the weft yarn that form this base cloth are the high-temperature heat-resistance yarn of fiber number between 240 ~ 1500 daniers (hereinafter referred to as D), at least contain the polytetrafluoroethylene (PTFE) yarn (hereinafter referred to as PTFE yarn) that fiber number is 240 ~ 1500 daniers in described warp thread and/or weft yarn.Consider that PTFE yarn has excellent chemical stability, the feature of the severe corrosive reagent such as hydrofluoric acid resistant, chloroazotic acid, oleum, concentrated base, hydrogen peroxide, there is good against weather, pick resistance simultaneously, namely to sticky dust, there is good deliming performance, and abrasion resistance properties is low, therefore at least PTFE yarn is contained in warp thread and/or weft yarn, but because the price of PTFE yarn is more expensive, so the method that the present invention adopts PTFE yarn and other high-temperature heat-resistance yarns to carry out interweaving obtains base cloth.Certainly, the radical of the PTFE yarn added is more, and the performance of gained base cloth is better.It is warp thread is 100%PTFE yarn that the warp thread of this base cloth and the interleaving mode of weft yarn comprise following seven kinds: one, and weft yarn is 100% other high-temperature heat-resistance yarns; Two is warp thread is 100% other high-temperature heat-resistance yarns, and weft yarn is 100%PTFE yarn; Three is warp thread is that other high-temperature heat-resistance yarns and PTFE space arrange, and weft yarn is 100% other high-temperature heat-resistance yarns; Four is warp thread is that other high-temperature heat-resistance yarns and PTFE space arrange, and weft yarn is 100%PTFE yarn; Five is warp thread is 100% other high-temperature heat-resistance yarns, and weft yarn is that other high-temperature heat-resistance yarns and PTFE space arrange; Six are warp thread is 100%PTFE yarn, and weft yarn is that other high-temperature heat-resistance yarns and PTFE space arrange; Seven is warp thread, weft yarn is all that other high-temperature heat-resistance yarns and PTFE space arrange.The warp thread of this base cloth and the interleaving mode of weft yarn be rear five kinds of modes preferably, consider that the reduction of cost and filter bag are in use mainly broadwise stressed, and broadwise is powerful main by the active force support between fiber web layer, warp-wise is powerful mainly to be supported by the brute force of base cloth, after filter bag is by Long-Time Service, when active force between broadwise stratum reticulare is entirely ineffective, broadwise in base cloth uses PTFE yarn to intert other high-temperature heat-resistance yarn arrays and weaves, can continue to provide filter bag broadwise powerful, increase the service life, and obtained base cloth has again PTFE yarn and the common advantage of other high-temperature heat-resistance yarns, more preferably the 5th kind of mode-warp thread is 100% other high-temperature heat-resistance yarns, weft yarn is that other high-temperature heat-resistance yarns and PTFE space arrange.The warp thread and the weft yarn that form base cloth of the present invention are the high-temperature heat-resistance yarn of fiber number between 240 ~ 1500D, if form the warp of base cloth, the fiber number of weft threads be less than 240D, then make the base cloth made powerful low, and due to the effect of high-temperature oxydation, sulfuration and pulse jet in the use procedure of filter bag, easily produce broken bag phenomenon; If the warp, the weft threads fiber number that form base cloth are greater than 1500D, the cost of base cloth raw material will be increased.Consider the requirement of the filter bag made in use life-span and cost, the warp of high-temperature heat-resistance yarn, the fiber number of weft yarn preferably 240 ~ 800D.
Base cloth for filter material of the present invention, in this base cloth, other high-temperature heat-resistance yarns are PE yarn, meta-aramid yarn, para-aramid yams (hereinafter referred to as PA yarn), polyphenylene sulfide yams (hereinafter referred to as PPS yarn), polyimides yarn (hereinafter referred to as P84 yarn), carbon fibre thread or polysulfonamide yarns (hereinafter referred to as PSA yarn), and other high-temperature heat-resistance yarns above-mentioned refer to and can be exposed to the yarn worked in the environment of 150 ~ 300 DEG C continuously.The selection forming the raw material of this base cloth must fully take into account boiler working condition condition and Gas Parameters, comprise: flue-gas temperature, humidity, oxygen content, acidic gas concentration, dust content, dust proterties and parameter fluctuation situation thereof, also will consider the factor such as ash removal method and the rate of filtration, above several yarns can meet these requirements substantially.Preferably other high-temperature heat-resistance yarns are PPS yarn.
Base cloth for filter material of the present invention, the percentage by weight that above-mentioned polytetrafluoroethylene (PTFE) yarn accounts for this base cloth is 10 ~ 90%, and the percentage by weight that other high-temperature heat-resistance yarns above-mentioned account for this base cloth is 90 ~ 10%.Add the ability that PTFE yarn can improve the intensity of base cloth, anti-nitrogen oxide, oxysulfide effectively, lower elongation and make filter bag in use good stability of the dimension.If the content of PTFE yarn is less than 10%, then obtained base cloth is anti-oxidant, chemical resistance medicament, dimensional stability are not fine; If the content of PTFE yarn is greater than 90%, though the various aspects of performance of obtained Ji Bu and filter bag is superior, substantially increase cost.The content of PTFE yarn preferably 30 ~ 70%.
Base cloth for filter material of the present invention, the interval ratio of above-mentioned polytetrafluoroethylene (PTFE) yarn and other high-temperature heat-resistance yarns is 1: 1 ~ 20.Equally, add the increase of PTFE yarn content, the performance of obtained Ji Bu and filter felt thereof is more excellent, but considers performance, purposes, price three aspect, and preferred interval is than in 1: 1 ~ 10 scopes.
Base cloth for filter material of the present invention, the filling yarn forming this base cloth is at least one in short fiber or long filament.If when filling yarn is short fiber, can adopts and carry out in short staple spinning system; If when filling yarn is long filament, long filament compound, twisting can be carried out in different operations, when synthetic fiber spinning, direct combination becomes long filament, can in elasticizer (DTY), draw twister (DY), the upper realization of Air texturing machines (ATY).Preferred short fiber yarn.
Base cloth for filter material of the present invention, the warp-wise density of this base cloth is 60 ~ 200/10cm, and latitudinal density is 20 ~ 100/10cm.Here density refers to the thread count of fabric, and namely 1 square inch of fabric includes the radical of warp yarn and weft threads.When weaving, the strict thread count controlling base cloth, the size of controlled condition on the tensile strength and elongation at break, dimensional stability and venting quality of making base cloth of thread count has direct impact.If warp-wise density is greater than 200/10cm, latitudinal density is greater than 100/10cm, though obtained base cloth is powerful high, venting quality can reduce, and will affect arresting efficiency like this; If warp-wise density is less than 60/10cm, latitudinal density is less than 20/10cm, and obtained base cloth venting quality is relatively good, but base cloth brute force value is not high, so make the brute force of base cloth and venting quality performance synthesis reach optimum efficiency through the setting of latitudinal density.
Base cloth for filter material of the present invention, according to JISL10968.27.1A method, when measuring pressure for 50Pa, the venting quality of this base cloth is 600 ~ 1500L/dm
2/ min.Here venting quality refers to when fabric exists certain pressure differential, the ability of air permeable fabric.If the venting quality of this base cloth is lower than 600L/dm
2/ min, can cause the filter felt crushing made high, and the energy consumption of air-introduced machine strengthens; If the venting quality of base cloth is higher than 1500L/dm
2/ min, dust is saturating filter felt easily, and filter effect is just low.Generally wish that filtering material ensures that Air permenbility is the bigger the better when equal filter efficiency, namely resistance is more low better.
Base cloth for filter material of the present invention, according to JISL10968.12.1A method, the warp tensile strength of this base cloth is 500 ~ 3000N/5cm, and weft tensile strength is 300 ~ 1500N/5cm.If the warp tensile strength of this base cloth is less than 500N/5cm, weft tensile strength is less than 300N/5cm, and filter bag is in use because the effect of pulse jet, high-temperature oxydation, sulfuration makes filter bag frangible pouch; If the warp tensile strength of this base cloth is greater than 3000N/5cm, weft tensile strength is greater than 1500N/5cm, will be encrypted the density of the yarn forming base cloth of the present invention or carry out overstriking to fiber number, and so just cause the increase of use cost.
Base cloth for filter material of the present invention, according to JISL10968.12.1A method, the elongation at break of this base cloth is 20 ~ 40%.Filter bag in use good stability of the dimension is particularly important, if the elongation at break of base cloth is lower than 20%, then filtrate telescopicing performance is poor, not easy-to-clean ash; If base cloth elongation at break is higher than 40%, then the impact resistance of filter bag and withstand voltage level decline, and cause the filter bag that obtains yielding, and the warp-wise distortion of filter bag causes the blocking of air inlet under inward flow filtration-type, broadwise distortion strengthens the impact wear of outside filtering type filter bag and framework, reduces service life.Only have the elongation at break of base cloth control could to allow in certain scope the filter bag made not yielding and dust wash away and deashing time be not easy to be damaged, and the control of the elongation at break of base cloth normally by forming the raw-material selection of base cloth, base cloth thread count decides.Base cloth filling yarn of the present invention adopts PTFE yarn and other high-temperature heat-resistance yarns to be that raw material is made, such mode suitably can reduce the percentage elongation of base cloth, because the brute force of PTFE yarn is relatively higher than other high-temperature heat-resistance yarns, but percentage elongation is lower than other high-temperature heat-resistance yarns, belong to high-tenacity low-elongation yarn, thus obtained filter bag good stability of the dimension.
A kind of production method of base cloth for filter material, in weaving process, yarn before weaving or the base cloth after weaving are processed through thermal finalization, the process conditions of thermal finalization processing: heat setting temperature is 70 ~ 110 DEG C, thermal finalization humidity is 70 ~ 100%, to return number be 1 ~ 3 time in thermal finalization.The condition of heat setting temperature and humidity has a great impact the brute force making base cloth, and preferred heat setting temperature is 80 ~ 100 DEG C, thermal finalization humidity is 80 ~ 95%.
Base cloth for filter material of the present invention is as the skeleton of filtering material, there is chemical resistance medicament, resistance to corrosion, reduction elongation, good stability of the dimension, there is higher hot strength, excellent venting quality, effectively can improve the strainability of filtrate, extend the service life of filtrate.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.The method of testing of the indices in the present invention is as follows:
[through latitudinal density]
According to JISL10968.6.1 method, be placed on smooth estrade by sample, remove factitious fold and tension force, selected 5 regions, number gets the root of the long warp of 10cm, weft yarn, averages.
[hot strength, elongation at break]
According to JISL10968.12.1A method (Ji Bu pulls limit method), for general fabrics, laboratory sample sample size is 8cm × 45cm, pulls the yarn of identical radical from the both sides on limit, residue laboratory sample fabric width is made to meet regulation fabric width: 5cm, then laboratory sample is by certain initial load, on tensile testing machine, clamps sample two ends with fixture, under the speed of constant speed 20cm/min, record hot strength and the elongation at break of each sample, often organize sample at least 5 times, average.
The assay method of fibrous fracture intensity and percentage elongation, namely on ultimate fibre stretching-machine, is vertically clamped a fiber with lower clamp, is drawn the speed of stretching: 20 ± 1mm/min by JIS standard, stretch, record fracture strength and the elongation at break of every root fiber, often organize sample at least 35 times, average.
[venting quality]
According to JISL10968.27.1A method, by sample under tension-free state, be placed on test section, adjustable pressure 50Pa, for avoiding the repetition of test point, during test by oblique for sample movement to obtain the different test point through, not suspension, each sample at least tests 5 times, averages.
[strength retention]
Basic sample to be put under the condition of 200 DEG C of * NO500PPM process 40 days, test its hot strength, and process 40 days under the condition putting into 200 DEG C of * SO24000PPM, test its hot strength, calculate strength retention respectively.The computational methods of strength retention: the intensity * 100 of the intensity/untreated samples of sample after strength retention (%)=process
[dry-hot shrinkage]
The experiment slice 3 of clip 20cm × 20cm in normal conditions, measures warp-wise and the broadwise length varying value of heat-resisting front and back, calculates the average shrinkage ratio of each experiment slice, and then calculate the mean value of 3 experiment slices.
Above-mentioned standard state refers to: temperature 20 DEG C ± 1 DEG C humidity 65% ± 2%.
Embodiment 1
Warp thread employing fiber number is the 100%PTFE yarn of 500D, weft yarn employing fiber number is the 100%PPS yarn of 1500D, then carry out through weft yarn the obtained plain cloth that interweaves, setting warp-wise density when weaving is 140/10cm, latitudinal density is 48/10cm, in weaving process, yarn before weaving or the base cloth after weaving are processed through thermal finalization, the process conditions of thermal finalization processing are: heat setting temperature is 85 DEG C, thermal finalization humidity is 80%, number is returned in thermal finalization: 1 time, obtained base cloth of the present invention, the percentage by weight recording PTFE yarn in this base cloth is 50%, the percentage by weight of PPS yarn is 50%, its physical property the results are shown in Table 1.
Embodiment 2
The 100%PTFE yarn that the 100%PPS yarn that warp thread employing fiber number is 1500D, weft yarn employing fiber number are 300D, then interweave through weft yarn, obtained plain cloth, its weaving process is with embodiment 1, obtained base cloth of the present invention, the percentage by weight recording PTFE yarn in this base cloth is 50%, the percentage by weight of PPS yarn is 50%, and its physical property the results are shown in Table 1.
Embodiment 3
Warp thread adopts fiber number to be the PTFE yarn of 240D and fiber number to be that the PPS space of 700D arranges, weft yarn adopts fiber number to be the 100%PPS yarn of 700D, then interweave through weft yarn, obtained plain cloth, in above-mentioned warp thread, the interval ratio of PTFE yarn and PPS yarn is 1: 1, its weaving process is with embodiment 1, obtained base cloth of the present invention, the percentage by weight recording PTFE yarn in this base cloth is 25%, the percentage by weight of PPS yarn is 75%, and its physical property the results are shown in Table 1.
Embodiment 4
Warp thread adopts warp thread fiber number to be the PTFE yarn of 700D and fiber number to be that the PSA space of 240D arranges, weft yarn adopts fiber number to be the 100%PTFE yarn of 700D, then interweave through weft yarn, obtained plain cloth, in above-mentioned warp thread, the interval ratio of PTFE yarn and PSA yarn is 1: 1, its weaving process is with embodiment 1, obtained base cloth of the present invention, the percentage by weight recording PTFE yarn in this base cloth is 75%, the percentage by weight of PPS yarn is 25%, and its physical property the results are shown in Table 1.
Embodiment 5
The PA space that warp thread adopts that fiber number is the 100%PA yarn of 240D, weft yarn adopts fiber number to be the PTFE yarn of 700D and fiber number to be 240D arranges, then interweave through weft yarn, obtained plain cloth, in above-mentioned weft yarn, the interval ratio of PTFE yarn and PA yarn is 1: 1, its weaving process is with embodiment 1, obtained base cloth of the present invention, the percentage by weight recording PTFE yarn in this base cloth is 25%, the percentage by weight of PA yarn is 75%, and its physical property the results are shown in Table 1.
Embodiment 6
The PPS space that warp thread adopts that fiber number is the 100%PTFE yarn of 240D, weft yarn adopts fiber number to be the PTFE yarn of 240D and fiber number to be 700D arranges, then interweave through weft yarn, obtained plain cloth, in above-mentioned weft yarn, the interval ratio of PTFE yarn and PPS yarn is 1: 1, its weaving process is with embodiment 1, obtained base cloth of the present invention, the percentage by weight recording PTFE yarn in this base cloth is 75%, the percentage by weight of PPS yarn is 25%, and its physical property the results are shown in Table 1.
Embodiment 7
The PPS space that warp thread adopts fiber number to be the PTFE yarn of 240D and fiber number to be that the PPS space of 700D arranges, weft yarn adopts fiber number to be the PTFE yarn of 240D and fiber number to be 700D arranges, then interweave through weft yarn, obtained plain cloth, the interval of above-mentioned warp thread and PTFE yarn and PPS yarn in weft yarn is 1: 1 than all, its weaving process is with embodiment 1, obtained base cloth of the present invention, the percentage by weight recording PTFE yarn in this base cloth is 50%, the percentage by weight of PPS yarn is 50%, and its physical property the results are shown in Table 1.
Embodiment 8
Warp thread adopts fiber number to be the PTFE yarn of 240D and fiber number to be that the PPS space of 700D arranges, weft yarn adopts fiber number to be the 100%PPS yarn of 700D, then interweave through weft yarn, obtained plain cloth, in above-mentioned warp thread, the interval ratio of PTFE yarn and PPS yarn is 1: 3, its weaving process is with embodiment 1, obtained base cloth of the present invention, the percentage by weight recording PTFE yarn in this base cloth is 12%, the percentage by weight of PPS yarn is 88%, and its physical property the results are shown in Table 1.
Embodiment 9
The P84 space that warp thread adopts fiber number to be 240DPTFE yarn and fiber number be that the P84 space of 700D arranges, weft yarn adopts fiber number to be 240DPTFE yarn and fiber number to be 700D arranges, then interweave through weft yarn, obtained plain cloth, in above-mentioned warp thread and weft yarn, the interval of PTFE yarn and P84 yarn is 1: 2 than all, its weaving process is with embodiment 1, obtained base cloth of the present invention, the percentage by weight recording PTFE yarn in this base cloth is 33%, the percentage by weight of P84 yarn is 67%, and its physical property the results are shown in Table 1.
Comparative example 1
Warp thread employing fiber number is the 100%PPS yarn of 240D, and weft yarn employing fiber number is the 100%PPS yarn of 700D, then interweaves through weft yarn, obtained plain cloth, and its weaving process is with embodiment 1, and obtained base cloth, its physical property the results are shown in Table 1.
Comparative example 2
The 100%PTFE yarn that the 100%PTFE yarn that warp thread employing fiber number is 240D, weft yarn employing fiber number are 700D, then interweaves through weft yarn, obtained plain cloth, and its weaving process is with embodiment 1, and obtained base cloth, its physical property the results are shown in Table 1.
Table 1
As can be seen from Table 1, anti-nitrogen oxide, the oxysulfide ability of the base cloth containing PTFE yarn strengthen, and chemical resistance medicament, resistance to corrosion improve (embodiment 1 ~ 8 and comparative example 1); Along with the increase (i.e. the increase of PTFE yarn content) of the interval ratio of PTFE yarn and other high-temperature heat-resistance yarns, the chemical resistance medicament of base cloth, resistance to corrosion and increasing (embodiment 3 and embodiment 8, embodiment 7 and embodiment 9).Thus obtained base cloth for filter material has good chemical resistance medicament, non-oxidizability, dimensional stability, but also there is higher hot strength, excellent venting quality.
Claims (8)
1. a base cloth for filter material, this base cloth is formed by warp thread and weft yarns, it is characterized in that: the warp thread and the weft yarn that form this base cloth are the high-temperature heat-resistance yarn of fiber number between 240 ~ 1500 daniers, the polytetrafluoroethylene (PTFE) yarn that fiber number is 240 ~ 1500 daniers is at least contained in described warp thread and/or weft yarn, it be warp thread is that other high-temperature heat-resistance yarns and polytetrafluoroethylene (PTFE) yarn are spaced that the warp thread of this base cloth and the interleaving mode of weft yarn comprise following five kinds: one, and weft yarn is 100% other high-temperature heat-resistance yarns; Two is warp thread is that other high-temperature heat-resistance yarns and polytetrafluoroethylene (PTFE) yarn are spaced, and weft yarn is 100% polytetrafluoroethylene (PTFE) yarn; Three is warp thread is 100% other high-temperature heat-resistance yarns, and weft yarn is spaced for other high-temperature heat-resistance yarns and polytetrafluoroethylene (PTFE) yarn; Four are warp thread is 100% polytetrafluoroethylene (PTFE) yarn, and weft yarn is spaced for other high-temperature heat-resistance yarns and polytetrafluoroethylene (PTFE) yarn; Five are warp thread, weft yarn is all that other high-temperature heat-resistance yarns and polytetrafluoroethylene (PTFE) yarn are spaced, and the interval of described polytetrafluoroethylene (PTFE) yarn and other high-temperature heat-resistance yarns is than being 1:1 ~ 20.
2. base cloth for filter material according to claim 1, is characterized in that: in this base cloth, other high-temperature heat-resistance yarns are PE yarn, meta-aramid yarn, para-aramid yams, polyphenylene sulfide yams, polyimides yarn, carbon fibre thread or polysulfonamide yarns.
3. base cloth for filter material according to claim 1, is characterized in that: the percentage by weight that described polytetrafluoroethylene (PTFE) yarn accounts for this base cloth is 10 ~ 90%, and the percentage by weight that other high-temperature heat-resistance yarns described account for this base cloth is 90 ~ 10%.
4. base cloth for filter material according to claim 1, is characterized in that: the filling yarn forming this base cloth is at least one in short fiber or long filament.
5. base cloth for filter material according to claim 1, is characterized in that: the warp-wise density of this base cloth is 60 ~ 200/10cm, and latitudinal density is 20 ~ 100/10cm.
6. base cloth for filter material according to claim 1, is characterized in that: according to JISL10968.27.1A method, and when measuring pressure for 50Pa, the venting quality of this base cloth is 600 ~ 1500L/dm2/min.
7. base cloth for filter material according to claim 1, is characterized in that: according to JISL10968.12.1A method, the warp tensile strength of this base cloth is 500 ~ 3000N/5cm, and weft tensile strength is 300 ~ 1500N/5cm.
8. base cloth for filter material according to claim 1, is characterized in that: according to JISL10968.12.1A method, the elongation at break of this base cloth is 20 ~ 40%.
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| CN201110333488.6A CN103041648B (en) | 2011-10-14 | 2011-10-14 | A kind of base cloth for filter material |
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| CN103041648B true CN103041648B (en) | 2016-04-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104801109A (en) * | 2014-01-26 | 2015-07-29 | 上海特安纶纤维有限公司 | High-performance high temperature-resistant glass fiber coated nonwoven filter material and preparation method thereof |
| CN104307254B (en) * | 2014-09-15 | 2016-08-31 | 天诺光电材料股份有限公司 | High temperature antistatic filtering material and preparation in one |
| CN105709503A (en) * | 2014-12-05 | 2016-06-29 | 东丽纤维研究所（中国）有限公司 | Base cloth with high gram weight and filter felt made of same |
| CN106120107A (en) * | 2016-08-26 | 2016-11-16 | 厦门三维丝环保股份有限公司 | A kind of filter felt PPS fiber composite resistance to oxidation base fabric |
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| CN101285226A (en) * | 2007-04-12 | 2008-10-15 | 东丽纤维研究所（中国）有限公司 | Technical yarns, textile fabric and use |
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| CN101711932A (en) * | 2008-10-08 | 2010-05-26 | 东丽纤维研究所（中国）有限公司 | Base cloth for filter material and production method thereof |
| CN101748549A (en) * | 2009-12-23 | 2010-06-23 | 汕头市奥山服饰有限公司 | High-strength stretch-proof flame-retardant textile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090176429A1 (en) * | 2008-01-07 | 2009-07-09 | Chih-How Chang | Flame retardant fabric |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285226A (en) * | 2007-04-12 | 2008-10-15 | 东丽纤维研究所（中国）有限公司 | Technical yarns, textile fabric and use |
| CN201257337Y (en) * | 2008-09-04 | 2009-06-17 | 上海博格工业用布有限公司 | Polyphenyl thioether and polytetrafluoroethylene fiber composite high-temperature resistant acupuncture filter felt |
| CN101711932A (en) * | 2008-10-08 | 2010-05-26 | 东丽纤维研究所（中国）有限公司 | Base cloth for filter material and production method thereof |
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