CN106377946A - 一种耐高温抗氧化过滤毡材料的制备方法 - Google Patents
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Abstract
本发明涉及一种耐高温抗氧化过滤毡材料的制备方法,属于过滤材料制备技术领域。本发明首先以纳米二氧化硅为原材料,并利用硅烷偶联剂对其进行烷基化处理,得到烷基化二氧化硅混合液,再将其与抗氧剂进行混合处理,得到固载抗氧剂改性纳米二氧化硅,接着将其与干燥得聚苯硫醚粉末进行混炼并拉丝,得到改性聚苯硫醚纤维丝,最后将钛酸四丁酯、乙酰丙酮‑乙醇混合液等物质进行混合后,将改性聚苯硫醚纤维丝浸泡于其中,浸泡后取出干燥并烧结即可。本发明制备的耐高温抗氧化过滤毡材料能在320~350℃高温下长期使用,可以有效延长过滤毡的使用寿命;除尘效率达到99.99%以上,提高了粉尘过滤效率。
Description
技术领域
本发明涉及一种耐高温抗氧化过滤毡材料的制备方法,属于过滤材料制备技术领域。
背景技术
在中国,电力、钢铁、化学、水泥、垃圾焚烧等“高消耗、高排放、高污染”工业的飞速发展,在给人们创造了更加富裕、方便、快捷的生活的同时,也对我国的天然资源、能源、环境的可持续发展造成了严重的威胁。这些社会工业排放的大气污染物中,主要包括高温烟气、粉尘、SOX、NOX等。如果不经过治理而直接排入大气中,会直接或间接影响到人们的呼吸系统、心血管系统、中枢神经系统、免疫系统等,并进而威胁到人体的生命安全。工业除尘技术的主要目标是控制污染源烟气颗粒物排放、减少大气污染。
目前针对工业高温烟气的处理,主要采取的有湿法除尘、电除尘、袋式除尘三种方法,其中袋式除尘器在除尘效率、一次性及长期投资费用、设备要求和性能等方面均优于湿法除尘和电除尘,将逐渐取代后两者而占据主流工业除尘器市场。袋式除尘器的核心是耐高温滤料,耐高温滤料的性能优劣将直接关系到除尘器的高效、稳定可靠、长时间运行。目前由于化学纤维强度高,柔韧性好,而且化学纤维针刺毡中纤维缠结性好,基布与毡的复合强度高。但现有的化学纤维针刺毡耐高温性能较差,这大大限制了其在高温除尘领域的广泛使用。
发明内容
本发明所要解决的技术问题:针对目前使用的化学纤维作为过滤毡材料耐高温性能较差,限制了其在高温除尘领域的广泛使用的问题,本发明首先以纳米二氧化硅为原材料,并利用硅烷偶联剂对其进行烷基化处理,得到烷基化二氧化硅混合液,再将其与抗氧剂进行混合处理,得到固载抗氧剂改性纳米二氧化硅,接着将其与干燥得聚苯硫醚粉末进行混炼并拉丝,得到改性聚苯硫醚纤维丝,最后将钛酸四丁酯、乙酰丙酮-乙醇混合液等物质进行混合后,将改性聚苯硫醚纤维丝浸泡于其中,浸泡后取出干燥并烧结,得到耐高温抗氧化过滤毡材料,本发明制备的过滤毡材料耐高温性能高,可以有效延长过滤毡的使用寿命,同时提高了过滤毡的粉尘过滤效率。
为解决上述技术问题,本发明采用的技术方案是:
(1)称取2~3g纳米二氧化硅,加入30~50mL质量分数为50%乙醇溶液中,以300~400r/min搅拌15~20min后,并用质量分数为3%氨水调节pH为9.0~9.5,随后以100W超声波超声分散30~40min,再加入0.2~0.3g硅烷偶联剂KH-550,在50~60℃恒温水浴下,继续超声分散40~50min,得烷基化二氧化硅混合液;
(2)向上述烷基化二氧化硅混合液中加入1.5~2.0g抗氧剂1010,以80W超声波超声分散20~30min,得悬浮液,将悬浮液装入离心机中,以5000~6000r/min离心分离10~12min,收集沉淀,将沉淀置于真空干燥箱中,在105~110℃下干燥至恒重,随后装入球磨机中,以300~400r/min球磨15~20min,得固载抗氧剂改性纳米二氧化硅;
(3)称取95~98g聚苯硫醚粉末,装入真空干燥箱中,在105~110℃下干燥至恒重,再将干燥后的聚苯硫醚粉末与1.8~2.0g上述固载抗氧剂改性纳米二氧化硅共混后加入双螺杆挤出机中,在280~290℃下熔融混炼挤出造粒,得改性聚苯硫醚母粒,再将改性聚苯硫醚母粒装入纺丝机中,熔融拉丝,得改性聚苯硫醚纤维丝;
(4)量取12~15mL钛酸四丁酯加入质量分数为10%乙酰丙酮-乙醇混合液中,以300~400r/min搅拌30~40min后,依次加入20~25mL无水乙醇,3~4mL质量分数为10%盐酸,0.8~1.0g五水硫酸铜粉末,1.5~1.8g硼酸粉末,继续搅拌1~2h后,得混合液,将上述改性聚苯硫醚纤维丝浸泡在混合液中1~2h,随后取出浸泡后的纤维丝置于105~110℃烘箱中,干燥至恒重,转入400~500℃马弗炉中,在氩气保护下,保温烧结2~3h,得耐高温抗氧化过滤毡材料。
本发明制备的耐高温抗氧化过滤毡材料能在320~350℃高温下长期使用,纵向拉断强力大于1820N以上,纬向拉断强力大于1850N以上,除尘效率达到99.99%以上。
本发明与其他方法相比,有益技术效果是:
(1)本发明制备的耐高温抗氧化过滤毡材料能在320~350℃高温下长期使用,可以有效延长过滤毡的使用寿命;
(2)本发明制备的耐高温抗氧化过滤毡材料除尘效率达到99.99%以上,提高了粉尘过滤效率。
具体实施方式
首先称取2~3g纳米二氧化硅,加入30~50mL质量分数为50%乙醇溶液中,以300~400r/min搅拌15~20min后,并用质量分数为3%氨水调节pH为9.0~9.5,随后以100W超声波超声分散30~40min,再加入0.2~0.3g硅烷偶联剂KH-550,在50~60℃恒温水浴下,继续超声分散40~50min,得烷基化二氧化硅混合液;
向上述烷基化二氧化硅混合液中加入1.5~2.0g抗氧剂1010,以80W超声波超声分散20~30min,得悬浮液,将悬浮液装入离心机中,以5000~6000r/min离心分离10~12min,收集沉淀,将沉淀置于真空干燥箱中,在105~110℃下干燥至恒重,随后装入球磨机中,以300~400r/min球磨15~20min,得固载抗氧剂改性纳米二氧化硅;再称取95~98g聚苯硫醚粉末,装入真空干燥箱中,在105~110℃下干燥至恒重,再将干燥后的聚苯硫醚粉末与1.8~2.0g上述固载抗氧剂改性纳米二氧化硅共混后加入双螺杆挤出机中,在280~290℃下熔融混炼挤出造粒,得改性聚苯硫醚母粒,再将改性聚苯硫醚母粒装入纺丝机中,熔融拉丝,得改性聚苯硫醚纤维丝;量取12~15mL钛酸四丁酯加入质量分数为10%乙酰丙酮-乙醇混合液中,以300~400r/min搅拌30~40min后,依次加入20~25mL无水乙醇,3~4mL质量分数为10%盐酸,0.8~1.0g五水硫酸铜粉末,1.5~1.8g硼酸粉末,继续搅拌1~2h后,得混合液,将上述改性聚苯硫醚纤维丝浸泡在混合液中1~2h,随后取出浸泡后的纤维丝置于105~110℃烘箱中,干燥至恒重,转入400~500℃马弗炉中,在氩气保护下,保温烧结2~3h,得耐高温抗氧化过滤毡材料。
实例1
首先称取3g纳米二氧化硅,加入50mL质量分数为50%乙醇溶液中,以400r/min搅拌20min后,并用质量分数为3%氨水调节pH为9.5,随后以100W超声波超声分散40min,再加入0.3g硅烷偶联剂KH-550,在60℃恒温水浴下,继续超声分散50min,得烷基化二氧化硅混合液;向上述烷基化二氧化硅混合液中加入2.0g抗氧剂1010,以80W超声波超声分散30min,得悬浮液,将悬浮液装入离心机中,以6000r/min离心分离12min,收集沉淀,将沉淀置于真空干燥箱中,在105℃下干燥至恒重,随后装入球磨机中,以400r/min球磨20min,得固载抗氧剂改性纳米二氧化硅;再称取98g聚苯硫醚粉末,装入真空干燥箱中,在110℃下干燥至恒重,再将干燥后的聚苯硫醚粉末与2.0g上述固载抗氧剂改性纳米二氧化硅共混后加入双螺杆挤出机中,在290℃下熔融混炼挤出造粒,得改性聚苯硫醚母粒,再将改性聚苯硫醚母粒装入纺丝机中,熔融拉丝,得改性聚苯硫醚纤维丝;量取15mL钛酸四丁酯加入质量分数为10%乙酰丙酮-乙醇混合液中,以400r/min搅拌40min后,依次加入25mL无水乙醇,4mL质量分数为10%盐酸,1.0g五水硫酸铜粉末,1.8g硼酸粉末,继续搅拌2h后,得混合液,将上述改性聚苯硫醚纤维丝浸泡在混合液中2h,随后取出浸泡后的纤维丝置于110℃烘箱中,干燥至恒重,转入500℃马弗炉中,在氩气保护下,保温烧结3h,得耐高温抗氧化过滤毡材料。
经检测,本发明制备的耐高温抗氧化过滤毡材料能在350℃高温下长期使用,纵向拉伸强力为1825N,纬向拉断强力为1860N,除尘效率达到99.995%。
实例2
首先称取2g纳米二氧化硅,加入30mL质量分数为50%乙醇溶液中,以300r/min搅拌15min后,并用质量分数为3%氨水调节pH为9.0,随后以100W超声波超声分散30min,再加入0.2g硅烷偶联剂KH-550,在50℃恒温水浴下,继续超声分散40min,得烷基化二氧化硅混合液;向上述烷基化二氧化硅混合液中加入1.5g抗氧剂1010,以80W超声波超声分散20min,得悬浮液,将悬浮液装入离心机中,以5000r/min离心分离10min,收集沉淀,将沉淀置于真空干燥箱中,在110℃下干燥至恒重,随后装入球磨机中,以300r/min球磨15min,得固载抗氧剂改性纳米二氧化硅;再称取95g聚苯硫醚粉末,装入真空干燥箱中,在105℃下干燥至恒重,再将干燥后的聚苯硫醚粉末与1.8g上述固载抗氧剂改性纳米二氧化硅共混后加入双螺杆挤出机中,在280℃下熔融混炼挤出造粒,得改性聚苯硫醚母粒,再将改性聚苯硫醚母粒装入纺丝机中,熔融拉丝,得改性聚苯硫醚纤维丝;量取12mL钛酸四丁酯加入质量分数为10%乙酰丙酮-乙醇混合液中,以300r/min搅拌30min后,依次加入20mL无水乙醇,3mL质量分数为10%盐酸,0.8g五水硫酸铜粉末,1.5g硼酸粉末,继续搅拌1h后,得混合液,将上述改性聚苯硫醚纤维丝浸泡在混合液中1h,随后取出浸泡后的纤维丝置于105℃烘箱中,干燥至恒重,转入400℃马弗炉中,在氩气保护下,保温烧结2h,得耐高温抗氧化过滤毡材料。
本发明制备的耐高温抗氧化过滤毡材料能在320℃高温下长期使用,纵向拉断强力为1830N,纬向拉断强力为1870N,除尘效率达到99.997%。
实例3
首先称取2g纳米二氧化硅,加入40mL质量分数为50%乙醇溶液中,以350r/min搅拌17min后,并用质量分数为3%氨水调节pH为9.2,随后以100W超声波超声分散30min,再加入0.25g硅烷偶联剂KH-550,在55℃恒温水浴下,继续超声分散45min,得烷基化二氧化硅混合液;向上述烷基化二氧化硅混合液中加入1.7g抗氧剂1010,以80W超声波超声分散25min,得悬浮液,将悬浮液装入离心机中,以5500r/min离心分离11min,收集沉淀,将沉淀置于真空干燥箱中,在105℃下干燥至恒重,随后装入球磨机中,以350r/min球磨17min,得固载抗氧剂改性纳米二氧化硅;再称取97g聚苯硫醚粉末,装入真空干燥箱中,在107℃下干燥至恒重,再将干燥后的聚苯硫醚粉末与1.9g上述固载抗氧剂改性纳米二氧化硅共混后加入双螺杆挤出机中,在285℃下熔融混炼挤出造粒,得改性聚苯硫醚母粒,再将改性聚苯硫醚母粒装入纺丝机中,熔融拉丝,得改性聚苯硫醚纤维丝;量取13mL钛酸四丁酯加入质量分数为10%乙酰丙酮-乙醇混合液中,以350r/min搅拌30min后,依次加入22mL无水乙醇,4mL质量分数为10%盐酸,0.9g五水硫酸铜粉末,1.7g硼酸粉末,继续搅拌1h后,得混合液,将上述改性聚苯硫醚纤维丝浸泡在混合液中1h,随后取出浸泡后的纤维丝置于107℃烘箱中,干燥至恒重,转入450℃马弗炉中,在氩气保护下,保温烧结3h,得耐高温抗氧化过滤毡材料。
本发明制备的耐高温抗氧化过滤毡材料能在330℃高温下长期使用,纵向拉断强力为1827N,纬向拉断强力大于1860N,除尘效率达到99.994%。
Claims (1)
1.一种耐高温抗氧化过滤毡材料的制备方法,其特征在于具体制备步骤为:
(1)称取2~3g纳米二氧化硅,加入30~50mL质量分数为50%乙醇溶液中,以300~400r/min搅拌15~20min后,并用质量分数为3%氨水调节pH为9.0~9.5,随后以100W超声波超声分散30~40min,再加入0.2~0.3g硅烷偶联剂KH-550,在50~60℃恒温水浴下,继续超声分散40~50min,得烷基化二氧化硅混合液;
(2)向上述烷基化二氧化硅混合液中加入1.5~2.0g抗氧剂1010,以80W超声波超声分散20~30min,得悬浮液,将悬浮液装入离心机中,以5000~6000r/min离心分离10~12min,收集沉淀,将沉淀置于真空干燥箱中,在105~110℃下干燥至恒重,随后装入球磨机中,以300~400r/min球磨15~20min,得固载抗氧剂改性纳米二氧化硅;
(3)称取95~98g聚苯硫醚粉末,装入真空干燥箱中,在105~110℃下干燥至恒重,再将干燥后的聚苯硫醚粉末与1.8~2.0g上述固载抗氧剂改性纳米二氧化硅共混后加入双螺杆挤出机中,在280~290℃下熔融混炼挤出造粒,得改性聚苯硫醚母粒,再将改性聚苯硫醚母粒装入纺丝机中,熔融拉丝,得改性聚苯硫醚纤维丝;
(4)量取12~15mL钛酸四丁酯加入质量分数为10%乙酰丙酮-乙醇混合液中,以300~400r/min搅拌30~40min后,依次加入20~25mL无水乙醇,3~4mL质量分数为10%盐酸,0.8~1.0g五水硫酸铜粉末,1.5~1.8g硼酸粉末,继续搅拌1~2h后,得混合液,将上述改性聚苯硫醚纤维丝浸泡在混合液中1~2h,随后取出浸泡后的纤维丝置于105~110℃烘箱中,干燥至恒重,转入400~500℃马弗炉中,在氩气保护下,保温烧结2~3h,得耐高温抗氧化过滤毡材料。
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