CN110328876A - 一种防火耐腐蚀风管的制备方法 - Google Patents

一种防火耐腐蚀风管的制备方法 Download PDF

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CN110328876A
CN110328876A CN201910608510.XA CN201910608510A CN110328876A CN 110328876 A CN110328876 A CN 110328876A CN 201910608510 A CN201910608510 A CN 201910608510A CN 110328876 A CN110328876 A CN 110328876A
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air hose
preparation
corrosion resistant
wall
resistant erosion
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李双
周阳
夏小忠
邱会东
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SUZHOU AITESI ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00Conditioning or physical treatment of the material to be shaped
    • B29B13/02Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/022Melting the material to be shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/91Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/90Measuring or controlling the joining process
    • B29C66/94Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/944Measuring or controlling the joining process by measuring or controlling the time by controlling or regulating the time
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00Producing tubular articles
    • B29D23/001Pipes; Pipe joints

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

本发明涉及一种防火耐腐蚀风管的制备方法,包括PVC板的玻璃纤维层制备、风管内壁制备、风管外壁制备三个步骤。本发明采用内层耐腐蚀、外层防火的双层管壁结构使风管具有优秀的耐腐蚀性能和耐火性能(防火等级达到FM4922),适宜用在输送含酸碱废气且对防火有要求的场所使用;本发明的风管采用内层热焊接外层FRP包覆的对接方式,不易泄露,更耐用,且在腐蚀环境中不腐蚀;本发明的风管的径向截面采用椭圆形,相比于常见的风管,具有漏风率低,结构强度高,刚性好,占用空间高度小,外形美观的优点;本发明的风管的内壁和外壁通过玻璃纤维层相连接,连接牢固,不易脱层。

Description

一种防火耐腐蚀风管的制备方法
技术领域
本发明涉及通风系统领域,尤其涉及一种防火耐腐蚀风管的制备方法。
背景技术
普通风管在有腐蚀的环境下容易腐蚀,不适用在有腐蚀的工况下使用,且耐火性能液不佳。目前对有防火防腐蚀要求的工况下使用较多的风管是带聚四氟乙烯涂层的不锈钢风管,该风管为焊接钢管+高温静电喷涂四氟乙烯,对接方式为法兰对接。该风管缺点是法兰对接处易漏,在腐蚀环境中不锈钢会腐蚀,且该风管价格高。因此提供一种防火防腐性能好、不易泄露、成本低的风管的制备方法是本发明所要解决的问题。
发明内容
本发明的目的在于克服现有技术的不足之处,提供一种防火防腐性能好、不易泄露、成本低的风管的制备方法。
为达到上述目的,本发明采用的技术方案为:提供了1.一种防火耐腐蚀风管的制备方法,其特征在于:包括以下步骤:
(1)PVC板的玻璃纤维层的制备
将玻璃纤维预浸上熔融的聚氯乙烯,之后将玻璃纤维均匀布置在PVC板一侧表面,冷却至室温得到玻璃纤维层;
(2)风管内壁的制备
剪裁PVC板;
将剪裁后的板材加热,软化后放到模具上卷成管状,所述玻璃纤维层朝外;
将卷成管状的PVC板冷却,放到接板机上热焊接成型,得到风管内壁;
(3)风管外壁的制备
玻璃纤维纱束预浸耐火树脂;
将风管内壁连同模具架在缠绕机支架上;启动缠绕机后缓慢移动,同时模具绕缠绕机转轴旋转,将玻璃纤维纱束缠绕到风管内壁上;
缠绕好后加热固化;
固化后冷却、脱模、修整风管两端口平齐得到风管外壁,完成防火耐腐蚀风管的制备。
作为一种优选方案,所述步骤(1)中,熔融的聚氯乙烯的温度为155-165℃。
作为一种优选方案,所述步骤(2)中,加热温度控制在125-30℃。
作为一种更优选方案,所述步骤(2)中,加热时间为8-10min。
作为一种优选方案,所述步骤(2)中,板材加热软化后放到模具上卷成椭圆形管状。
作为一种优选方案,所述步骤(2)中,热焊接的步骤为:接板机通过金属热板直接与PVC板两开口边接触达到熔点,热板退出,对两结合面施压使两开口边融合。
作为一种优选方案,所述步骤(3)中,加热温度为45-50℃,固化时间为4-6h。
作为一种优选方案,所述步骤(3)中,耐火树脂为酚醛树脂。。
本发明的有益技术效果在于:提供了一种防火防腐性能好、不易泄露、成本低的风管的制备方法。
1、本发明采用内层耐腐蚀、外层防火的双层管壁结构使风管具有优秀的耐腐蚀性能和耐火性能(防火等级达到FM4922),适宜用在输送含酸碱废气且对防火有要求的场所使用;其中内层采用PVC材质,该材料化学稳定性好,能耐浓盐酸、90%硫酸、60%硝酸和30%氢氧化钠,同时还具有良好的阻燃性;外层采用耐火耐高温的玻璃钢材质(如基材为脲醛树脂的玻璃钢),该材料具有优良的防火性能,材料防火等级达到FM4910,同时该材料具有很好的耐化学性和耐氧化性,与玻璃纤维相容性佳,机械性能和力学性能优良。
2、本发明的风管采用内层热焊接外层FRP包覆的对接方式。采用焊接+包覆的对接方式不易泄露,更耐用,且在腐蚀环境中不腐蚀。
3、本发明的风管的径向截面采用椭圆形,相比于常见的矩形风管、圆形风管,具有漏风率低,结构强度高,刚性好,占用空间高度小,外形美观的优点。
4、本发明的风管的内壁和外壁通过玻璃纤维层相连接,连接牢固,不易脱层。
具体实施方式
下面结合具体实施例对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案,而不能以此来限制本发明的保护范围。本发明专利中未详细描述的,均可以理解为本领域内的公知常识。
一种防火耐腐蚀风管的制备方法,包括以下步骤:
(1)PVC板的玻璃纤维层的制备:
将玻璃纤维预浸上熔融的聚氯乙烯(其温度为160℃),之后将玻璃纤维均匀布置在PVC板一侧表面,自然冷却至室温得到玻璃纤维层。
(2)风管内壁的制备:
根据目标风管的周长计算PVC板的下料尺寸,剪裁PVC板并选择合适尺寸的模具;
将剪裁后的板材放到烘房内,在125-130℃条件下加热8-10min使PVC板软化;将软化后的板材放到模具上卷成椭圆形管状,其中玻璃纤维层朝外;
将卷成管状的PVC板自然冷却后放到接板机上热焊接成型,得到风管内壁(厚度控制在3-5mm);热焊接的步骤为:接板机通过金属热板直接与PVC板两开口边接触达到熔点,热板退出,对两结合面施压使两开口边融合。
(3)风管外壁的制备:
将玻璃纤维纱束预浸酚醛树脂;
将风管内壁连同模具架在缠绕机支架上;启动缠绕机后缓慢移动(相对模具水平移动),同时模具带动风管内壁绕缠绕机转轴旋转,将玻璃纤维纱束一层一层缠绕到风管内壁的玻璃纤维层上,达到设计要求厚度后停止缠绕;
缠绕好后放入烘房中加热固化,加热温度设置为45-50℃,固化时间为5h;
固化后冷却、脱模、修整风管两端口平齐得到风管外壁(厚度控制在7-10mm),完成防火耐腐蚀风管的制备。
以上依据本发明的理想实施例为启示,通过上述的说明内容,相关人员完全可以在不偏离本项发明技术思想的范围内,进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容,必须要根据权利要求范围来确定技术性范围。

Claims (8)

1.一种防火耐腐蚀风管的制备方法,其特征在于:包括以下步骤:
(1)PVC板的玻璃纤维层的制备
将玻璃纤维预浸上熔融的聚氯乙烯,之后将玻璃纤维均匀布置在PVC板一侧表面,冷却至室温得到玻璃纤维层;
(2)风管内壁的制备
剪裁PVC板;
将剪裁后的板材加热,软化后放到模具上卷成管状,所述玻璃纤维层朝外;
将卷成管状的PVC板冷却,放到接板机上热焊接成型,得到风管内壁;
(3)风管外壁的制备
玻璃纤维纱束预浸耐火树脂;
将风管内壁连同模具架在缠绕机支架上;启动缠绕机后缓慢移动,同时模具绕缠绕机转轴旋转,将玻璃纤维纱束缠绕到风管内壁上;
缠绕好后加热固化;
固化后冷却、脱模、修整风管两端口平齐得到风管外壁,完成防火耐腐蚀风管的制备。
2.根据权利要求1所述的防火耐腐蚀风管的制备方法,其特征在于:所述步骤(1)中,熔融的聚氯乙烯的温度为155-165℃。
3.根据权利要求1所述的防火耐腐蚀风管的制备方法,其特征在于:所述步骤(2)中,加热温度控制在125-30℃。
4.根据权利要求3所述的防火耐腐蚀风管的制备方法,其特征在于:所述步骤(2)中,加热时间为8-10min。
5.根据权利要求1所述的防火耐腐蚀风管的制备方法,其特征在于:所述步骤(2)中,板材加热软化后放到模具上卷成椭圆形管状。
6.根据权利要求1所述的防火耐腐蚀风管的制备方法,其特征在于:所述步骤(2)中,热焊接的步骤为:接板机通过金属热板直接与PVC板两开口边接触达到熔点,热板退出,对两结合面施压使两开口边融合。
7.根据权利要求1所述的防火耐腐蚀风管的制备方法,其特征在于:所述步骤(3)中,加热温度为45-50℃,固化时间为4-6h。
8.根据权利要求1所述的防火耐腐蚀风管的制备方法,其特征在于:所述步骤(3)中,耐火树脂为酚醛树脂。
CN201910608510.XA 2019-07-08 2019-07-08 一种防火耐腐蚀风管的制备方法 Pending CN110328876A (zh)

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