CN110202797B - 一种薄膜连接的方法 - Google Patents

一种薄膜连接的方法 Download PDF

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CN110202797B
CN110202797B CN201910517898.2A CN201910517898A CN110202797B CN 110202797 B CN110202797 B CN 110202797B CN 201910517898 A CN201910517898 A CN 201910517898A CN 110202797 B CN110202797 B CN 110202797B
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CN110202797A (zh
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谭惠丰
卫剑征
张义
吴凡
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Harbin Institute of Technology
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    • 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
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • 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
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45Joining of substantially the whole surface of the articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00Flat articles, e.g. films or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00Layered products

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

一种薄膜连接的方法,属于薄膜连接技术领域,解决了目前对于表面没有活性或活性弱的薄膜材料的连接问题,它包含利用喷枪在两片待连接薄膜的连接端分别喷涂FEP溶液,FEP即氟化乙烯丙烯共聚物,其中六氟丙烯的含量为10‑20%,喷涂宽度为4‑10mm;喷涂厚度为3‑10μm;将两片喷涂FEP溶液的待连接薄膜同时分三阶段加热,先在预热至150℃的环境中加热2‑3min,然后在5 min内升温至230℃再加热2‑3min,最后在5 min内升温至330℃再加热2‑3min;将加热后的两片待连接薄膜的喷涂面相对进行热压连接,热压温度为300‑350℃,热压压力为20‑100kpa,热压时间为10‑30s;本发明用于连接厚度为1‑50μm的薄膜。

Description

一种薄膜连接的方法
技术领域
本发明属于薄膜连接技术领域,具体涉及一种薄膜连接的方法。
背景技术
对于表面没有活性或活性弱的薄膜材料,如聚碳酸酯薄膜、聚四氟乙烯薄膜和聚酰亚胺薄膜等,目前的连接方式一般是使用胶黏剂粘合,一种是使用胶黏剂涂抹于薄膜上,进行热压粘合,一种是将薄膜进行化学改性处理使其自带背胶或活性提高进行粘合;这两种处理方法存在连接部位增重过大的问题,而且连接部位无法承受-150℃的低温,限制了薄膜材料的应用;并且化学处理工艺繁琐,操作复杂,还会降低薄膜的性能;特别是对于厚度在50μm以下的薄膜连接,上述问题更加明显。
发明内容
本发明的目的是为了解决目前对于表面没有活性或活性弱的薄膜材料的连接问题,针对厚度为1-50μm的薄膜,提供了一种薄膜连接的方法,其技术方案如下:
一种薄膜连接的方法,它包含以下步骤:
一、利用喷枪在两片待连接薄膜的连接端分别喷涂FEP溶液,FEP即氟化乙烯丙烯共聚物,其中六氟丙烯的含量为10-20%,喷涂宽度为4-10mm;喷涂厚度为3-10μm;
二、将两片喷涂FEP溶液的待连接薄膜同时分三阶段加热,先在预热至150℃的环境中加热2-3min,然后在5 min内升温至230℃再加热2-3min,最后在5 min内升温至330℃再加热2-3min;
三、将加热后的两片待连接薄膜的喷涂面相对进行热压连接,热压温度为300-350℃,热压压力为20-100kpa,热压时间为10-30s。
本发明的有益效果为:操作简便,现有的喷枪、加热装置和热压装置就可以完成连接;容易实现工业化生产,成本低;对薄膜无伤害,不污染环境;连接部位增重极小,低于15g/m2;连接后的薄膜材料强度与本体强度基本相同,并且FEP为耐高低温材料,能承受-150℃到150℃的高低温,可用于航天领域;相同厚度和不同厚度的薄膜均可连接。
附图说明:
图1是两片待连接薄膜连接的示意图。
具体实施方式:
参照图1,一种薄膜连接的方法,它包含以下步骤:
一、利用喷枪在两片待连接薄膜的连接端分别喷涂FEP溶液1,FEP即氟化乙烯丙烯共聚物,其中六氟丙烯的含量为10-20%,喷涂宽度为4-10mm;喷涂厚度为3-10μm;
二、将两片喷涂FEP溶液1的待连接薄膜同时分三阶段加热,先在预热至150℃的环境中加热2-3min,然后在5 min内升温至230℃再加热2-3min,最后在5 min内升温至330℃再加热2-3min;
三、将加热后的两片待连接薄膜的喷涂面相对进行热压连接,热压温度为300-350℃,热压压力为20-100kpa,热压时间为10-30s。
实施例一,两片厚度为12.5μm的聚酰亚胺薄膜连接的方法,最佳参数下如:
一、利用喷枪在两片待连接薄膜的连接端分别喷涂FEP溶液1,FEP中六氟丙烯的含量为12%,喷涂宽度为8mm;喷涂厚度为5μm;
二、将两片喷涂FEP溶液1的待连接薄膜同时分三阶段加热,先在预热至150℃的环境中加热2min,然后在2min内升温至230℃再加热2min,最后在2 min内升温至330℃再加热2min;
三、将加热后的两片待连接薄膜的喷涂面相对进行热压连接,热压温度为330℃,热压压力为50kpa,热压时间为20s。

Claims (1)

1.一种薄膜连接的方法,其特征在于它包含以下步骤:
一、利用喷枪在两片待连接薄膜的连接端分别喷涂FEP溶液(1),FEP中六氟丙烯的含量为10-20%,喷涂宽度为4-10mm;喷涂厚度为3-10μm;所述待连接薄膜的厚度为1-50μm;
二、将两片喷涂FEP溶液(1)的待连接薄膜同时分三阶段加热,先在预热至150℃的环境中加热2-3min,然后在5min内升温至230℃再加热2-3min,最后在5min内升温至330℃再加热2-3min;
三、将加热后的两片待连接薄膜的喷涂面相对进行热压连接,热压温度为300-350℃,热压压力为20-100kpa,热压时间为10-30s;连接部位增重低于15g/m2
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