CN107497178A - 一种覆膜滤料的制备方法 - Google Patents
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
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- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/155—Halides of elements of Groups 2 or 12 of the Periodic Table
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- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
本发明涉及一种覆膜滤料的制备方法,属于过滤材料制备技术领域。本发明通过选取高炉矿渣与碳酸钠、硅砂和白云石混合制备熔融玻璃液,经水淬后拉丝收集制备玻璃纤维作为基体,将萤石粉末分散至桃胶混合液中,负载至玻璃纤维基体表面,经煅烧后炭化并固化至玻璃纤维表面,有效防止氟化氢腐蚀,同时将改性后的玻璃纤维织布,经热压覆膜处理,使其与聚四氟乙烯膜有效结合,制备得一种聚四氟乙烯覆膜滤料。本发明制备的覆膜滤料力学性能优异,具有良好的抗静电耐腐蚀性能。
Description
技术领域
本发明涉及一种覆膜滤料的制备方法,属于过滤材料制备技术领域。
背景技术
现阶段,仍然以火力发电为主要电力来源方式,火力发电量为总发电量的80%左右,其他能源价格的上升促使大多数的火力发电站继续使用煤为主要燃料,燃煤过程中将不断产生废气,为了满足不同生产工艺的要求,达到能量回收的目的,对这些含尘的高温气体都需要进行除尘处理。21世纪年代以前,过滤材料主要是棉、毛等天然纤维,过滤材料存在使用温度低,吸湿率高、不耐酸等缺陷,因此除特别的要求,现在一般很少使用这些过滤材料。目前,过滤材料朝着耐高温、高效、高滤速、长寿命、低成本方向发展,先后出现了玻璃纤维、芳香族聚酞胺、聚四氟乙烯等性能良好的滤料。其中,聚四氟乙烯薄膜玻璃纤维覆膜滤料是耐高温滤料的发展方向,它是在经特殊配方表面处理的玻纤基布上覆薄膜微孔聚四氟乙烯薄膜制成的新型过滤材料,根据玻璃纤维支撑体形态不同包括连续玻璃纤维机织物覆膜滤料、膨体纱覆膜滤料和玻璃纤维针刺毡覆膜滤料,其综合了玻璃纤维和膨化微孔聚四氟乙烯薄膜的优点,具有耐高温、除尘效率高,使用寿命长的优良特性。
由于过滤材料的使用环境对过滤材料本身的性能有较高的要求,因此,在过滤材料领域,高性能纤维一直受到人们的关注,当前,用于过滤材料的高性能纤维主要包括芳纶1313、聚酰亚胺、聚苯硫醚和玻璃纤维等,芳纶1313耐氧化性差,较易水解破坏;聚酰亚胺价格昂贵,并且主要依赖进口;聚苯硫醚抗氧化性一般,其使用温度与氧气含量成反比,且聚酰亚胺与聚苯硫醚在生产过程中会造成环境污染;玻璃纤维虽然具有较高的拉伸强度和尺寸稳定性,但是玻璃纤维在织造的过程中容易产生静电,并且玻璃纤维不耐氟化氢腐蚀,所以制备一种耐腐蚀性能优异抗静电型的覆膜滤料很有必要。
发明内容
本发明所要解决的技术问题:针对现有玻璃纤维覆膜滤料在织造的过程中容易产生静电,并且玻璃纤维不耐氟化氢腐蚀的问题,提供了一种覆膜滤料的制备方法。
为解决上述技术问题,本发明采用如下所述的技术方案是:
(1)取2~3kg高炉矿渣碾磨并过100目筛,得高炉矿渣粉末,取100~120g高炉矿渣粉末、10~15g碳酸钠、6~8g芒硝、55~60g硅砂、45~50g白云石和15~20g斜方辉石混合球磨过200目筛,得混合球磨粉末,将混合球磨粉末熔融并水淬处理得矿渣玻璃,用坩埚单丝炉拉丝处理,静置冷却至室温,得直径为10~15μm的基体玻璃纤维;
(2)按质量比1:10,将桃胶与去离子水混合,溶胀处理得桃胶混合液,匀浆处理制备得匀浆混合液,取萤石并破碎过200目筛,得萤石粉末,按质量比1:10,将萤石粉末与匀浆混合液混合,超声分散得混合分散液,将混合分散液置于喷枪中,均匀喷洒至基体玻璃纤维表面;
(3)待喷洒完成后,静置固化,得固化玻璃纤维,并煅烧得改性玻璃纤维,将改性玻璃纤维加捻成型,用锥形的卷绕方式卷绕成形,制备得改性玻璃纤维纱线并置于自动剑杆织样机中,织布处理得改性玻璃纤维织布;
(4)裁剪相同尺寸的聚四氟乙烯和改性玻璃纤维织布,按尺寸大小重叠并置于热压覆膜机中,热压覆膜至厚度为5~8μm,静置冷却至室温,即可制备得一种耐腐蚀抗静电型覆膜滤料。
步骤(3)所述的织布处理为按经密×纬密=100×80根/10cm进行织布。
步骤(4)所述的热压覆膜机热压覆膜条件为控制热压覆膜温度为400~410℃,覆合压力为1~2MPa,脱蜡为480~500℃,脱蜡时间为28~30s。
本发明与其他方法相比,有益技术效果是:
(1)本发明通过选取高炉矿渣与碳酸钠、硅砂和白云石混合制备熔融玻璃液,经水淬后拉丝收集玻璃纤维作为基体,将萤石粉末分散至桃胶混合液中,负载于玻璃纤维基体表面,经煅烧后炭化并固化至玻璃纤维表面,有效防止氟化氢对覆膜滤料的表面腐蚀;
(2)本发明将改性后的玻璃纤维织布,经热压覆膜处理,使其与聚四氟乙烯膜有效结合,制备得聚四氟乙烯覆膜滤料,由于本发明中聚四氟乙烯有效包覆滤料表面,使其置于绝缘区域进行隔离,使玻璃纤维覆膜滤料无法产生静电,从而改善玻璃纤容易产生静电的缺陷。
具体实施方式
首先选取2~3kg高炉矿渣,清洗并自然晾干后,碾磨并过100目筛,得高炉矿渣粉末,选取100~120g高炉矿渣粉末、10~15g碳酸钠、6~8g芒硝、55~60g硅砂、45~50g白云石和15~20g斜方辉石置于球磨罐中,在250~300r/min下球磨3~5h,过200目筛,得混合球磨粉末;将混合球磨粉末置于150~160℃下预热25~30min后,再按5℃/min升温至1500~1600℃,保温熔融2~3h后,将其置于20~30℃去离子水中水淬处理5~10s,制备得矿渣玻璃,的矿渣玻璃并置于坩埚中,用坩埚单丝炉拉丝处理,静置冷却至室温,制备得直径为10~15μm的基体玻璃纤维;选取新鲜桃胶并洗净,按质量比1:10,将洗净桃胶与去离子水混合,在室温下溶胀处理20~24h后,得桃胶混合液并置于匀浆机中,在室温下匀浆处理1~2h后,得匀浆混合液;取萤石并破碎过200目筛,得萤石粉末,按质量比1:10,将萤石粉末与匀浆混合液混合,在200~300W下超声分散10~15min后,制备得混合分散液,将混合分散液置于喷枪中,按质量比1:15,在5~10MPa下将混合分散液均匀喷洒至基体玻璃纤维表面;待喷洒完成后,在室温下静置固化10~12h,得固化玻璃纤维并置于管式气氛炉中,通氮气排除空气后,在氮气气氛、450~500℃条件下保温煅烧3~5h,静置冷却至室温后,制备得改性玻璃纤维;将改性玻璃纤维加捻成型,用锥形的卷绕方式卷绕成形,制备得改性玻璃纤维纱线,将改性玻璃纤维纱线置于自动剑杆织样机中,按经密×纬密=100×80根/10cm进行织布处理,制备得改性玻璃纤维织布;裁剪相同尺寸的聚四氟乙烯和改性玻璃纤维织布,将两者按尺寸大小重叠放置并置于热压覆膜机中,控制热压覆膜温度为400~410℃,覆合压力为1~2MPa,脱蜡为480~500℃,脱蜡时间为28~30s,待热压覆膜至厚度为5~8μm后,停止热压覆膜并静置冷却至室温,即可制备得一种覆膜滤料。
实例1
首先选取2kg高炉矿渣,清洗并自然晾干后,碾磨并过100目筛,得高炉矿渣粉末,选取100g高炉矿渣粉末、10g碳酸钠、6g芒硝、55g硅砂、45g白云石和15g斜方辉石置于球磨罐中,在250r/min下球磨3h,过200目筛,得混合球磨粉末;将混合球磨粉末置于150℃下预热25min后,再按5℃/min升温至1500℃,保温熔融2h后,将其置于20℃去离子水中水淬处理5s,制备得矿渣玻璃,的矿渣玻璃并置于坩埚中,用坩埚单丝炉拉丝处理,静置冷却至室温,制备得直径为10μm的基体玻璃纤维;选取新鲜桃胶并洗净,按质量比1:10,将洗净桃胶与去离子水混合,在室温下溶胀处理20h后,得桃胶混合液并置于匀浆机中,在室温下匀浆处理1h后,得匀浆混合液;取萤石并破碎过200目筛,得萤石粉末,按质量比1:10,将萤石粉末与匀浆混合液混合,在200W下超声分散10min后,制备得混合分散液,将混合分散液置于喷枪中,按质量比1:15,在5MPa下将混合分散液均匀喷洒至基体玻璃纤维表面;待喷洒完成后,在室温下静置固化10h,得固化玻璃纤维并置于管式气氛炉中,通氮气排除空气后,在氮气气氛、450℃条件下保温煅烧3h,静置冷却至室温后,制备得改性玻璃纤维;将改性玻璃纤维加捻成型,用锥形的卷绕方式卷绕成形,制备得改性玻璃纤维纱线,将改性玻璃纤维纱线置于自动剑杆织样机中,按经密×纬密=100×80根/10cm进行织布处理,制备得改性玻璃纤维织布;裁剪相同尺寸的聚四氟乙烯和改性玻璃纤维织布,将两者按尺寸大小重叠放置并置于热压覆膜机中,控制热压覆膜温度为400℃,覆合压力为1MPa,脱蜡为480℃,脱蜡时间为28s,待热压覆膜至厚度为5μm后,停止热压覆膜并静置冷却至室温,即可制备得一种覆膜滤料。
实例2
首先选取3kg高炉矿渣,清洗并自然晾干后,碾磨并过100目筛,得高炉矿渣粉末,选取110g高炉矿渣粉末、13g碳酸钠、7g芒硝、58g硅砂、48g白云石和18g斜方辉石置于球磨罐中,在280r/min下球磨4h,过200目筛,得混合球磨粉末;将混合球磨粉末置于155℃下预热28min后,再按5℃/min升温至1550℃,保温熔融3h后,将其置于25℃去离子水中水淬处理8s,制备得矿渣玻璃,的矿渣玻璃并置于坩埚中,用坩埚单丝炉拉丝处理,静置冷却至室温,制备得直径为13μm的基体玻璃纤维;选取新鲜桃胶并洗净,按质量比1:10,将洗净桃胶与去离子水混合,在室温下溶胀处理22h后,得桃胶混合液并置于匀浆机中,在室温下匀浆处理2h后,得匀浆混合液;取萤石并破碎过200目筛,得萤石粉末,按质量比1:10,将萤石粉末与匀浆混合液混合,在250W下超声分散13min后,制备得混合分散液,将混合分散液置于喷枪中,按质量比1:15,在8MPa下将混合分散液均匀喷洒至基体玻璃纤维表面;待喷洒完成后,在室温下静置固化11h,得固化玻璃纤维并置于管式气氛炉中,通氮气排除空气后,在氮气气氛、480℃条件下保温煅烧4h,静置冷却至室温后,制备得改性玻璃纤维;将改性玻璃纤维加捻成型,用锥形的卷绕方式卷绕成形,制备得改性玻璃纤维纱线,将改性玻璃纤维纱线置于自动剑杆织样机中,按经密×纬密=100×80根/10cm进行织布处理,制备得改性玻璃纤维织布;裁剪相同尺寸的聚四氟乙烯和改性玻璃纤维织布,将两者按尺寸大小重叠放置并置于热压覆膜机中,控制热压覆膜温度为405℃,覆合压力为2MPa,脱蜡为490℃,脱蜡时间为29s,待热压覆膜至厚度为7μm后,停止热压覆膜并静置冷却至室温,即可制备得一种覆膜滤料。
实例3
首先选取3kg高炉矿渣,清洗并自然晾干后,碾磨并过100目筛,得高炉矿渣粉末,选取120g高炉矿渣粉末、15g碳酸钠、8g芒硝、60g硅砂、50g白云石和20g斜方辉石置于球磨罐中,在300r/min下球磨5h,过200目筛,得混合球磨粉末;将混合球磨粉末置于160℃下预热30min后,再按5℃/min升温至1600℃,保温熔融3h后,将其置于30℃去离子水中水淬处理10s,制备得矿渣玻璃,的矿渣玻璃并置于坩埚中,用坩埚单丝炉拉丝处理,静置冷却至室温,制备得直径为15μm的基体玻璃纤维;选取新鲜桃胶并洗净,按质量比1:10,将洗净桃胶与去离子水混合,在室温下溶胀处理24h后,得桃胶混合液并置于匀浆机中,在室温下匀浆处理2h后,得匀浆混合液;取萤石并破碎过200目筛,得萤石粉末,按质量比1:10,将萤石粉末与匀浆混合液混合,在300W下超声分散15min后,制备得混合分散液,将混合分散液置于喷枪中,按质量比1:15,在10MPa下将混合分散液均匀喷洒至基体玻璃纤维表面;待喷洒完成后,在室温下静置固化12h,得固化玻璃纤维并置于管式气氛炉中,通氮气排除空气后,在氮气气氛、500℃条件下保温煅烧5h,静置冷却至室温后,制备得改性玻璃纤维;将改性玻璃纤维加捻成型,用锥形的卷绕方式卷绕成形,制备得改性玻璃纤维纱线,将改性玻璃纤维纱线置于自动剑杆织样机中,按经密×纬密=100×80根/10cm进行织布处理,制备得改性玻璃纤维织布;裁剪相同尺寸的聚四氟乙烯和改性玻璃纤维织布,将两者按尺寸大小重叠放置并置于热压覆膜机中,控制热压覆膜温度为410℃,覆合压力为2MPa,脱蜡为500℃,脱蜡时间为30s,待热压覆膜至厚度为8μm后,停止热压覆膜并静置冷却至室温,即可制备得一种覆膜滤料。
将上述实施例所得覆膜滤料与玻璃纤维覆膜滤料进行检测,并进行对比,结果如表一所示。
表一:覆膜滤料性能对照表
由上表可知,本发明覆膜滤料具有极佳的耐酸碱性能,尤其耐氟化氢腐蚀,抗静电性能好,使用寿命长,使用温度高。
Claims (3)
1.一种覆膜滤料的制备方法,其特征在于具体制备步骤为:
(1)取2~3kg高炉矿渣碾磨并过100目筛,得高炉矿渣粉末,取100~120g高炉矿渣粉末、10~15g碳酸钠、6~8g芒硝、55~60g硅砂、45~50g白云石和15~20g斜方辉石混合球磨过200目筛,得混合球磨粉末,将混合球磨粉末熔融并水淬处理得矿渣玻璃,用坩埚单丝炉拉丝处理,静置冷却至室温,得直径为10~15μm的基体玻璃纤维;
(2)按质量比1:10,将桃胶与去离子水混合,溶胀处理得桃胶混合液,匀浆处理制备得匀浆混合液,取萤石并破碎过200目筛,得萤石粉末,按质量比1:10,将萤石粉末与匀浆混合液混合,超声分散得混合分散液,将混合分散液置于喷枪中,均匀喷洒至基体玻璃纤维表面;
(3)待喷洒完成后,静置固化,得固化玻璃纤维,并煅烧得改性玻璃纤维,将改性玻璃纤维加捻成型,用锥形的卷绕方式卷绕成形,制备得改性玻璃纤维纱线并置于自动剑杆织样机中,织布处理得改性玻璃纤维织布;
(4)裁剪相同尺寸的聚四氟乙烯和改性玻璃纤维织布,按尺寸大小重叠并置于热压覆膜机中,热压覆膜至厚度为5~8μm,静置冷却至室温,即可制备得一种耐腐蚀抗静电型覆膜滤料。
2.根据权利要求1所述的一种覆膜滤料的制备方法,其特征在于,步骤(3)所述的织布处理为按经密×纬密=100×80根/10cm进行织布。
3.根据权利要求1所述的一种覆膜滤料的制备方法,其特征在于,步骤(4)所述的热压覆膜机热压覆膜条件为控制热压覆膜温度为400~410℃,覆合压力为1~2MPa,脱蜡为480~500℃,脱蜡时间为28~30s。
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