CN114805994A - 一种氟塑定型真空膜管及成型工艺 - Google Patents

一种氟塑定型真空膜管及成型工艺 Download PDF

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CN114805994A
CN114805994A CN202210384551.7A CN202210384551A CN114805994A CN 114805994 A CN114805994 A CN 114805994A CN 202210384551 A CN202210384551 A CN 202210384551A CN 114805994 A CN114805994 A CN 114805994A
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刘烈新
钱开军
冯小璐
陈福建
叶建标
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Shanghai Xinwang Technology Co ltd
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    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
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    • B29C48/92—Measuring, controlling or regulating
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    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18—Homopolymers or copolymers or tetrafluoroethene
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
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    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
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  • Chemical Kinetics & Catalysis (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
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Abstract

本发明涉及复合材料技术领域，特别是一种氟塑定型真空膜管及成型工艺，与现有技术相比，该氟塑定型真空膜管采用乙烯‑四氟乙烯共聚物(ETFE)或全氟乙烯丙烯共聚物(FEP)制成或两者结合，配料经过螺杆进行热熔；通过定型模具头进行在模具口进行初次定型；再经过冷水槽后膜管经过冷却部分结晶；再经过二次模具真空定型，形成包括工字型、蝴蝶型、梯形的等截面造型，适用于不同型面管件匹配，具有离型性能好、使用温度范围大、拉伸强度大、结构多样化和使用方便等优点，主要应用于航空航天、轨道交通上的碳纤维复合材料的管状异型结构件的成型辅助使用或者作为异型电器电缆管线的衬套密封使用。

Description

一种氟塑定型真空膜管及成型工艺
技术领域
本发明涉及复合材料技术领域，特别是一种氟塑定型真空膜管及成型工艺。
背景技术
现有技术中的氟塑膜管多为单一材质、单一圆筒结构造型，无法在复合材料异型管件中使用。普通的塑料膜管无法满足其成型时高温高压的性能要求。
发明内容
为解决现有技术中离型膜所存在的缺陷和问题，提供一种氟塑定型真空膜管及成型工艺本发明为解决其技术问题所采用的技术方案是：本发明的一种氟塑定型真空膜管，材料为乙烯-四氟乙烯共聚物(ETFE)或全氟乙烯丙烯共聚物(FEP)或上述两者结合的混合体。
一种氟塑定型真空膜管的成型工艺，其工艺方法如下：
(1)、配料经过螺杆进行热熔，热熔温度为310-360℃；
(2)、通过定型模具头进行在模具口进行初次定型，所述的模具头采用渐变形式，由圆筒逐渐过度成工字型、蝴蝶型或是梯型结构，使物料在经过模头后逐渐由圆筒型转变为定制结构，实现初次定型；
(3)、初次定型的膜管经过长达2-3m冷水槽后，膜管经过冷却会部分结晶,所述冷却的温度在-5—10℃之间；
(4)、膜管再经过第二道定制模具，所述的第二道定制模具上进行开孔处理，将膜管套入至第二道定制模具中，两端进行密闭，使其形成密封环境；
(5)、通过小孔抽取真空的同时并对模具进行加热，加热温度为130-200℃；加热时间为5-20min,使其膜管定型后，再进行第二次冷却，冷却温度为0-10℃；冷却至室温后取出，膜管形成包括工字型、蝴蝶型、梯形的等截面造型，适用于不同型面管件匹配。
本发明的有益效果是：与现有技术相比，本发明的一种氟塑定型真空膜管采用乙烯-四氟乙烯共聚物(ETFE)或全氟乙烯丙烯共聚物(FEP)或上述两者结合的混合体制成，具有离型性能好、使用温度范围大、拉伸强度大、结构多样化和使用方便等优点，主要应用于航空航天、轨道交通上的碳纤维复合材料的管状异型结构件的成型辅助使用或者作为异型电器电缆管线的衬套密封使用。
具体实施方式：
本发明的一种氟塑定型真空膜管，材料为乙烯-四氟乙烯共聚物 (ETFE)或全氟乙烯丙烯共聚物(FEP)或两者结合。
一种氟塑定型真空膜管的成型工艺，其工艺方法如下：
(1)、配料经过螺杆进行热熔，热熔温度为310-360℃；
(2)、通过定型模具头进行在模具口进行初次定型，所述的模具头采用渐变形式，由圆筒逐渐过度成工字型、蝴蝶型或是梯型结构，使物料在经过模头后逐渐由圆筒型转变为定制结构，实现初次定型；
(3)、初次定型的膜管经过长达2-3m冷水槽后，膜管经过冷却会部分结晶,所述冷却的温度在-5—10℃之间；
(4)、膜管再经过第二道定制模具，所述的第二道定制模具上进行开孔处理，将膜管套入至第二道定制模具中，两端进行密闭，使其形成密封环境；
(5)、通过小孔抽取真空的同时并对模具进行加热，加热温度为 130-200℃；加热时间为5-20min,使其膜管定型后，再进行第二次冷却，冷却温度为0-10℃；冷却至室温后取出，膜管形成包括工字型、蝴蝶型、梯形的等截面造型，适用于不同型面管件匹配。
通过上述材料及工艺成型出来的氟塑定型真空膜管将极大的增加了各项性能，本发明的氟塑定型真空膜管的性能如下表：
Figure BDA0003593090910000031
从上表可以看出，本发明的一种氟塑定型真空膜管具有离型性能好、使用温度范围宽、拉伸强度性能好、结构多样化等和使用方便等优点。
与现有技术相比，本发明的一种氟塑定型真空膜管采用乙烯 -四氟乙烯共聚物(ETFE)或全氟乙烯丙烯共聚物(FEP)或上述两者结合的混合体制成，具有离型性能好、使用温度范围大、拉伸强度大、结构多样化和使用方便等优点，主要应用于航空航天、轨道交通上的碳纤维复合材料的管状异型结构件的成型辅助使用或者作为异型电器电缆管线的衬套密封使用。
根据本发明的实施例已对本发明进行了说明性而非限制性的描述，但应理解，本发明的保护范围并不局限于此，在不脱离由权利要求所限定的相关保护范围的情况下，本领域的技术人员可以做出变更和/或修改，在此基础之上的任何修改、等同替换等，都应涵盖在本发明的保护范围之内。

Claims (2)

1.一种氟塑定型真空膜管，其特征在于：材料为乙烯-四氟乙烯共聚物(ETFE)或全氟乙烯丙烯共聚物(FEP)或上述两者结合的混合体。
2.一种氟塑定型真空膜管的成型工艺，其工艺方法如下：
(1)、配料经过螺杆进行热熔，热熔温度为310-360℃；
(2)、通过定型模具头进行在模具口进行初次定型，所述的模具头采用渐变形式，由圆筒逐渐过度成工字型、蝴蝶型或是梯型结构，使物料在经过模头后逐渐由圆筒型转变为定制结构，实现初次定型；
(3)、初次定型的膜管经过长达2-3m冷水槽后，膜管经过冷却会部分结晶,所述冷却的温度在-5—10℃之间；
(4)、膜管再经过第二道定制模具，所述的第二道定制模具上进行开孔处理，将膜管套入至第二道定制模具中，两端进行密闭，使其形成密封环境；
(5)、通过小孔抽取真空的同时并对模具进行加热，加热温度为130-200℃；加热时间为5-20min,使其膜管定型后，再进行第二次冷却，冷却温度为0-10℃；冷却至室温后取出，膜管形成包括工字型、蝴蝶型、梯形的等截面造型，适用于不同型面管件匹配。
CN202210384551.7A 2022-04-13 2022-04-13 一种氟塑定型真空膜管及成型工艺 Pending CN114805994A (zh)

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