CN1515722A - High silica glass fibre needle-punched felt and its production process - Google Patents
High silica glass fibre needle-punched felt and its production process Download PDFInfo
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- CN1515722A CN1515722A CNA031318800A CN03131880A CN1515722A CN 1515722 A CN1515722 A CN 1515722A CN A031318800 A CNA031318800 A CN A031318800A CN 03131880 A CN03131880 A CN 03131880A CN 1515722 A CN1515722 A CN 1515722A
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Abstract
The present invention relates to a technological process for producing highi-temp. resistant fibre needle-punched felt, belonging to the field of non-woven fabric technology for removing dust, filtration, cleaning, heat-insulating and temp. protection. It includes the following steps: cutting and feeding, carding and web-forming, laying-laminating to form felt, needle-punching to make felt, acid leaching, cleaning to make neutralization, heat treatment and sintering treatment so as to obtain the invented high silica glass fibre needle-punched felt whose SiO2 content is up to above 96%.
Description
Technical field
The present invention relates to a kind of method of manufacturing technology of fibrofelt, especially a kind of process of high-temperature fibre Nomex belongs to the bondedfibre fabric technical field.
Background technology
Fiber needled felt is a kind of broad-spectrum novel nonwoven filtering material.Existing this type of Nomex connects fiber mutually and forms generally by repeated puncture on the multilayer feltwork of fiber combing, laying one-tenth.
Along with the enhancing of people's environmental consciousness, the range of application of Nomex constantly enlarges.More and more higher in fields such as high temperature purification, heat insulation, insulations to performance demands such as existing Nomex, the heatproof that comprises fiberglass needled mat, chemically stable, anticorrosion, absorption.Existing procucts are because the restriction of material and fiber self structure can't be satisfied above-mentioned needs better.
High silica fiber can not melt below 1650 ℃.Its heat resistance reaches 1000～1100 ℃.After temperature surpasses 980 ℃, become fragile owing to crystallization makes fiber, but its physical aspect heat-proof quality changes not quite, so during as heat-barrier material, its serviceability temperature can reach 1370 ℃.In addition, high silica fiber has excellent electric insulating energy and dielectric properties, and chemical stability is also fine, ability all acid and erosions of moderate strength alkali except that hydrofluoric acid and phosphoric acid, so fields such as high-temperature dust removal, high temperature insulating have a extensive future.
Understand according to the applicant, present stage the manufacture craft of resurrection glass fibre felt fail to break through traditional circle, its main processes is: raw material---→ acid leach---→ heat treatment---→ felt---→ high silica fiber felt.Wherein acid leach is the key operation that guarantees the final products physicochemical property, its effect is the impurity of removing in the glass fibre such as carbon, water and metal oxide, has desirable resistance to elevated temperatures and electrical insulation capability and chemical stability thereby guarantee to make the back glass mat.Yet there is following obviously drawback in method traditionally: pristine fibre length and diameter through acid leach all can shrink, the fragility of fiber strengthens, and intensity decreases is therefore when the acupuncture felt, the fiber breakdown is serious, the raising of this problem The Long-term Effect felt quality.
Summary of the invention
The objective of the invention is to: propose the resurrection glass fibre Nomex process that the obviously minimizing of a kind of debris, physical property and chemical stability have all obtained corresponding raising.
In order to reach above purpose, the applicant feels by analysis and research: only break original traditional handicraft, take the processing step of first felt, back leaching, can thoroughly avoid acid leach that fiber is become fragile and the debris that causes too much, influence the problem of felt quality.Yet the acid leach operation of original technology is easy to realize that because when carrying out acid leach, glass fibre does not cut off as yet, and filament fiber directly gets final product through acid tank continuously; As acid leach and felt operation put upside down then since before the felt high silica fiber be cut into short silk, can't resemble direct process acid tank the filament fiber.In order to address this problem, the applicant finds out following practicable process through repetition test, the steps include:
1), chopping feeding---filament of glass fiber is prescinded the back shredding, input to cotton machine, send into carding machine by predetermined volumes or weight by cotton feeder;
2), carding---carding machine is carded to root root monofilament formation mat net with the short chopping of high silica and transfers out on conveyer belt;
3), laying becomes felt---and the lapping machine reaches predetermined thickness with mat stratum reticulare layer laying;
4), the acupuncture felt---needing machine carries out acupuncture to feltwork, and fiber is connect mutually, becomes the fiberglass needled mat with certain intensity;
5), acid leach---with the resurrection glass fibre felt heat hot phase-splitting after the acupuncture, send into leaching in the strong acid groove again;
6), clean neutralization---the resurrection glass fibre felt after the water cleaning leaching, again by neutralization solution processing, drying;
7), heat treatment---dried resurrection glass fibre felt is heated to 500～650 ℃ by heat-treatment furnace, moisture on the fabric and carbon are removed;
8) sintering processes---continue to be warming up to 800～1000 ℃, sintering.
Experiment showed, that the present invention has broken routine, processing step is scientific and reasonable.Glass fibre fragility when adopting above-mentioned technology of the present invention owing to the acupuncture felt is little, intensity is high, has therefore avoided the easily broken broken problem of the fiber of acupuncture problem behind the acid leach, SiO in the resurrection glass fibre Nomex after making
2Content can reach more than 96%, and its intensity increases, and heat resistance and corrosion resistance improve.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the processing step schematic diagram before the embodiment of the invention one acid leach.
Fig. 2 is the processing step schematic diagram after the embodiment of the invention one acupuncture.
1 is feeding among Fig. 1, the 2nd, and combing, the 3rd, lapping, the 4th, acupuncture; 5 is hot phase-splittings among Fig. 2, the 6th, and acid leach, the 7th, washing, the 8th, heat treatment, the 9th, sintering
The specific embodiment
Embodiment one
The high silica fiber Nomex technical process of present embodiment is referring to Fig. 1 and Fig. 2, and concrete steps are:
1), the chopping feeding---filament of glass fiber prescinded into 40～80 millimeters after shredding, input to cotton machine, send into carding machine by cotton feeder by predetermined volumes or weight;
2), carding---carding machine is carded to root root monofilament formation mat net with the short chopping of high silica and transfers out on conveyer belt;
3), laying becomes felt---and the lapping machine reaches predetermined thickness with mat stratum reticulare layer laying;
4), the acupuncture felt---needing machine carries out acupuncture to feltwork, and fiber is connect mutually, becomes the fiberglass needled mat with certain intensity;
5), acid leach---before leaching with acidproof waterproof, can not stop the resin covered of acid infiltration, the concrete practice is that formaldehyde resin is dispersed in water or other solvents, is sprayed on the fiberglass needled mat; Again with the resurrection glass fibre felt heat hot phase-splitting after the acupuncture, to send into again in 10～15% the hot salt acid tank, temperature is controlled at 70～90 ℃, and the time is 2～6 hours; The colloidal silica solution of adding 0.01% in the leaching process is to improve the tensile strength of fabric;
6), clean neutralization---the resurrection glass fibre felt after the water cleaning leaching, again by containing 0.1～10%Na
2CO
3, 0.02～2%Na
2SiO
3The solution neutralisation treatment, treatment temperature is controlled at 16～82 ℃, the processing time is 1～10 minute, drying;
7), heat treatment---dried resurrection glass fibre felt is heated to 500～650 ℃ by heat-treatment furnace, moisture on the fabric and carbon are removed, the time is 1～8 minute;
8) sintering processes---continue to be warming up to 800～1000 ℃, sintering, the time is 1～8 minute.
Experiment shows, SiO in the high silica Nomex of present embodiment behind sintering
2Content reaches more than 96%, and its heat resisting temperature is generally 900～1000 ℃, and instantaneous temperature can reach 1400 ℃, and chemical stability is fine, and the erosion of the alkali of all acid and moderate strength also has excellent electric insulating and dielectric properties beyond energy hydrofluoric acid resistant and the phosphoric acid.Because it is the surface of high silica fiber is a porous matter, has the characteristic of gas, liquid selective absorption, therefore very good as filtering material.
Embodiment two
The high silica fiber Nomex process and the embodiment one of present embodiment are basic identical, and the main difference part is that the strong acid in the step 5) adopts sulfuric acid, is adopted phenol alditol resin by multiple resin, with high silica fiber Nomex dipping wherein.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (9)
1. resurrection glass fibre Nomex process is characterized in that step is:
1), chopping feeding---filament of glass fiber is prescinded the back shredding, input to cotton machine, send into carding machine by predetermined volumes or weight by cotton feeder;
2), carding---carding machine is carded to root root monofilament formation mat net with the short chopping of high silica and transfers out on conveyer belt;
3), laying becomes felt---and the lapping machine reaches predetermined thickness with mat stratum reticulare layer laying;
4), the acupuncture felt---needing machine carries out acupuncture to feltwork, and fiber is connect mutually, becomes the fiberglass needled mat that has-decide intensity;
5), acid leach---with the resurrection glass fibre felt heat hot phase-splitting after the acupuncture, send into leaching in the strong acid groove again;
6), clean the resurrection glass fibre felt after neutralization one-water cleans leaching, again by containing neutralization solution processing, drying;
7), heat treatment---dried resurrection glass fibre felt is heated to 500～650 ℃ by heat-treatment furnace, moisture on the fabric and carbon are removed;
8) sintering processes---continue to be warming up to 800～1000 ℃, sintering.
2. according to the described resurrection glass fibre Nomex of claim 1 process, it is characterized in that: carry out by multiple with acidproof resin waterproof, that can not stop the acid infiltration before the acid leach of described step 5).
3. according to the described resurrection glass fibre Nomex of claim 2 process, it is characterized in that: described resin is a formaldehyde resin.
4. according to the described resurrection glass fibre Nomex of claim 2 process, it is characterized in that: described resin is a phenol alditol resin.
5. according to claim 3 or 4 described resurrection glass fibre Nomex processes, it is characterized in that: described is that resin dispersion back in solvent is sprayed by multiple mode.
6. according to claim 3 or 4 described resurrection glass fibre Nomex processes, it is characterized in that: described is with resin dispersion back dipping in solvent by multiple mode.
7. according to claim 1 or 2 described resurrection glass fibre Nomex processes, it is characterized in that: in the described step 5) resurrection glass fibre felt after the acupuncture sent in 10～15% the hot salt acid tank, temperature is controlled at 70～90 ℃, and the time is 2～6 hours.
8. according to claim 1 or 2 described resurrection glass fibre Nomex processes, it is characterized in that: the colloidal silica solution of adding 0.01% in the described acid leach process.
9. according to claim 1 or 2 described resurrection glass fibre Nomex processes, it is characterized in that: described neutralization solution is for containing 0.1～10%Na
2CO
3, 0.02～2%Na
2SiO
3Solution, treatment temperature is controlled at 16～82 ℃, the processing time is 1～10 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031318800A CN1515722A (en) | 2003-06-13 | 2003-06-13 | High silica glass fibre needle-punched felt and its production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031318800A CN1515722A (en) | 2003-06-13 | 2003-06-13 | High silica glass fibre needle-punched felt and its production process |
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| Publication Number | Publication Date |
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| CN1515722A true CN1515722A (en) | 2004-07-28 |
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|---|---|---|---|
| CNA031318800A Pending CN1515722A (en) | 2003-06-13 | 2003-06-13 | High silica glass fibre needle-punched felt and its production process |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101218186A (en) * | 2005-07-12 | 2008-07-09 | 欧文斯科宁知识产权资产有限公司 | Thin rotary-fiberized glass insulation and process for producing same |
| CN101984178A (en) * | 2010-11-10 | 2011-03-09 | 山东新力环保材料有限公司 | Pinprick material and manufacturing method thereof |
| US7993724B2 (en) | 2007-05-09 | 2011-08-09 | Owens Corning Intellectual Capital, Llc | Insulation for high temperature applications |
| CN101654835B (en) * | 2009-07-10 | 2011-08-17 | 江苏恒州特种玻璃纤维材料有限公司 | Thick high silica glass fiber cloth and manufacturing process thereof |
| CN101654834B (en) * | 2009-07-10 | 2011-08-31 | 江苏恒州特种玻璃纤维材料有限公司 | Production technique of high silica glass fiber mesh cloth |
| CN101654836B (en) * | 2009-07-10 | 2011-11-30 | 江苏恒州特种玻璃纤维材料有限公司 | Manufacturing process of high silica glass fiber cloth |
| CN101654854B (en) * | 2009-07-10 | 2011-12-28 | 江苏恒州特种玻璃纤维材料有限公司 | High-temperature resistant glass fiber cloth and fabricating technique thereof |
| CN102320760A (en) * | 2011-07-15 | 2012-01-18 | 江苏恒州特种玻璃纤维材料有限公司 | A kind of equipment that is used for resurrection glass fibre yarn intermittent type acid leach treatment process |
| CN102839476A (en) * | 2012-09-25 | 2012-12-26 | 江苏恒州特种玻璃纤维材料有限公司 | Production process of high-strength high-silicon dioxide glass fiber yarns |
| CN103230709A (en) * | 2013-04-23 | 2013-08-07 | 宋朋泽 | Preparation method of superhigh temperature filter material |
| CN104250875A (en) * | 2013-06-25 | 2014-12-31 | 浙江蚕缘家纺有限公司 | Improved continuous silk woolen floss plate, production device and production method thereof as well as heating plate |
| CN104250876A (en) * | 2013-06-25 | 2014-12-31 | 浙江蚕缘家纺有限公司 | Continuous silk velvet cotton sheet and production device and method thereof, and warm-keeping piece |
| CN105152551A (en) * | 2015-10-10 | 2015-12-16 | 中材科技股份有限公司 | Preparation method of ultra-fine high silica glass fiber cotton |
| CN105879494A (en) * | 2016-04-22 | 2016-08-24 | 苏州派欧技术咨询服务有限公司 | Preparation method of high-temperature-resistant filter felt |
| CN106282580A (en) * | 2016-10-10 | 2017-01-04 | 昆明南铂再生资源技术研究有限公司 | Noble metal recovery glass mat |
| CN106435195A (en) * | 2016-10-10 | 2017-02-22 | 昆明南铂再生资源技术研究有限公司 | Preparation method of glass fiber mat for precious-metals recovery |
| CN106746750A (en) * | 2016-11-24 | 2017-05-31 | 河海大学 | A kind of preparation method of nano-silicon dioxide modified resurrection glass fibre |
| CN107252587A (en) * | 2017-07-21 | 2017-10-17 | 江苏明晶布业股份有限公司 | A kind of high silica filtering material |
| CN107460632A (en) * | 2017-07-21 | 2017-12-12 | 江苏明晶布业股份有限公司 | A kind of high silica needle felt production technique |
| CN111389096A (en) * | 2019-12-31 | 2020-07-10 | 南京际华三五二一环保科技有限公司 | Preparation method of superfine double-sided glass fiber needle-punched filter material |
| CN111662089A (en) * | 2020-07-05 | 2020-09-15 | 郑州瑞泰耐火科技有限公司 | High-temperature-resistant self-sintered nano plate and preparation method thereof |
| JP2022501778A (en) * | 2018-10-05 | 2022-01-06 | キュイリッツ ホールディング ゲーエムベーハーCuylits Holding GmbH | Fire protection device with complex system, complex system, and battery pack with fire protection device |
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-
2003
- 2003-06-13 CN CNA031318800A patent/CN1515722A/en active Pending
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| US8650913B2 (en) | 2005-07-12 | 2014-02-18 | Owens Corning Intellectual Capital, Llc | Thin rotary-fiberized glass insulation and process for producing same |
| CN101218186A (en) * | 2005-07-12 | 2008-07-09 | 欧文斯科宁知识产权资产有限公司 | Thin rotary-fiberized glass insulation and process for producing same |
| US9133571B2 (en) | 2005-07-12 | 2015-09-15 | Owens Corning Intellectual Capital, Llc | Thin rotary-fiberized glass insulation and process for producing same |
| CN101218186B (en) * | 2005-07-12 | 2016-03-02 | 欧文斯科宁知识产权资产有限公司 | The operation of thin rotary-fiberized glass insulation product and these goods of production |
| CN104313787A (en) * | 2005-07-12 | 2015-01-28 | 欧文斯科宁知识产权资产有限公司 | Method of forming needled rotary glass insulation product that has reduced thickness |
| US7993724B2 (en) | 2007-05-09 | 2011-08-09 | Owens Corning Intellectual Capital, Llc | Insulation for high temperature applications |
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| CN103230709B (en) * | 2013-04-23 | 2014-12-10 | 宋朋泽 | Preparation method of superhigh temperature filter material |
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| CN106282580A (en) * | 2016-10-10 | 2017-01-04 | 昆明南铂再生资源技术研究有限公司 | Noble metal recovery glass mat |
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| CN106746750A (en) * | 2016-11-24 | 2017-05-31 | 河海大学 | A kind of preparation method of nano-silicon dioxide modified resurrection glass fibre |
| CN106746750B (en) * | 2016-11-24 | 2020-07-17 | 河海大学 | Preparation method of nano silicon dioxide modified high silica glass fiber |
| CN107252587A (en) * | 2017-07-21 | 2017-10-17 | 江苏明晶布业股份有限公司 | A kind of high silica filtering material |
| CN107460632A (en) * | 2017-07-21 | 2017-12-12 | 江苏明晶布业股份有限公司 | A kind of high silica needle felt production technique |
| JP2022501778A (en) * | 2018-10-05 | 2022-01-06 | キュイリッツ ホールディング ゲーエムベーハーCuylits Holding GmbH | Fire protection device with complex system, complex system, and battery pack with fire protection device |
| JP7312248B2 (en) | 2018-10-05 | 2023-07-20 | キュイリッツ ホールディング ゲーエムベーハー | Fire suppression device with combined system, combined system and battery pack with fire suppression device |
| CN111389096A (en) * | 2019-12-31 | 2020-07-10 | 南京际华三五二一环保科技有限公司 | Preparation method of superfine double-sided glass fiber needle-punched filter material |
| CN111662089A (en) * | 2020-07-05 | 2020-09-15 | 郑州瑞泰耐火科技有限公司 | High-temperature-resistant self-sintered nano plate and preparation method thereof |
| CN114481667A (en) * | 2021-12-09 | 2022-05-13 | 中材科技膜材料（山东）有限公司 | White water recycling device and process for AGM partition plate |
| CN114481667B (en) * | 2021-12-09 | 2023-11-10 | 中材科技膜材料（山东）有限公司 | White water recycling device and process for AGM separator |
| CN115262081A (en) * | 2022-07-25 | 2022-11-01 | 泰山玻璃纤维有限公司 | Production process and production line of high-strength continuous glass fiber fireproof insulation board |
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