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Laminate body and method for producing laminate body

A manufacturing method and laminated body technology, applied in cable/conductor manufacturing, chemical instruments and methods, manufacturing printed circuit precursors, etc., can solve the problems of low adhesive force, difficult direct bonding, insufficient bonding strength, etc. , to achieve a firm bonding effect

Active Publication Date: 2014-05-28
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the adhesion of fluoropolymers such as tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymers is inherently low, and it is difficult to directly bond fluoropolymers to other materials (substrates). Adhesive bonding, etc., in many cases the bonding strength is not sufficient
Furthermore, even when the fluoropolymer adheres to other materials (substrates) with a certain degree of adhesive force, the adhesive force tends to fluctuate depending on the type of substrate or the lamination method. Insufficient reliability of connection

Method used

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  • Laminate body and method for producing laminate body
  • Laminate body and method for producing laminate body
  • Laminate body and method for producing laminate body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] Use a 0.5mm spacer to form a 11cm×8cm quadrilateral to surround PFA (composition: TFE / PPVE=97.2 / 2.8 (molar ratio), MFR: 70.2g / 10min, melting point: 290°C, number of carboxyl groups at the end of the main chain: every 10 6 The number of carbon atoms in the main chain is 115) around 9.5g, using a vacuum hot press (model: MKP-1000HV-WH) under the conditions of 350°C, preheating for 600 seconds, pressure 10.2MPa, and pressurization time for 120 seconds. -S7, manufactured by Mikado Technos) was hot-pressed to produce a PFA sheet (sample A) with a thickness of 0.5 mm. The sample preparation conditions are listed in Table 2.

[0114] Sample A was bonded to copper foil (0.8 mm in thickness) to obtain a laminate. Bonding was performed using the vacuum hot press described above under the conditions shown in Table 3 below.

Embodiment 2

[0116] Use a 0.5mm spacer to form a 11cm×8cm quadrilateral to surround PFA (composition: TFE / PPVE=7.9 / 2.1 (molar ratio), MFR: 24.7g / 10min, melting point: 294°C, number of carboxyl groups at the end of the main chain: every 10 6 The number of carbon atoms is 80) around 9.5g, using a vacuum hot press (model: MKP-1000HV-WH-S7) under the conditions of 350°C, 600 seconds preheating, 10.2MPa pressure, and 120 seconds pressing time , manufactured by Mikado Technos Co., Ltd.) was hot-pressed to produce a PFA sheet (sample B) with a thickness of 0.5 mm. The sample preparation conditions are listed in Table 2.

[0117] Sample B was bonded to copper foil (0.8 mm in thickness) to obtain a laminate. Bonding was performed using the vacuum hot press described above under the conditions shown in Table 3 below.

Embodiment 3

[0143] Using a die with an inner diameter of 7 mm, a die with an inner diameter of 3 mm and an outer diameter of 6 mm, PFA (composition: TFE / PPVE=97.2 / 2.8 (molar ratio) , MFR: 70.2g / 10min, melting point 290°C, number of carboxyl groups at the end of the main chain: per 10 6 carbon atoms in the main chain, which is 80) are melt-molded on a bare copper wire with a diameter of 1.0 mm, and returned to room temperature to obtain a PFA-clad copper wire with an outer diameter of 1.14 mm. Further, the PFA-clad copper wire was passed through a 330° C. hot-air circulating furnace (length 8 m) for 2 minutes (4 m / min) to obtain a PFA-clad copper wire with a core wire adhesion strength of 5 kg / 3 inch or more.

[0144] The core wire adhesion strength is measured by a method based on MIL C-17, and is the tensile force when the covering is torn off at 12.7 mm / min.

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Abstract

The objective of the present invention is to provide a laminate body such that a metal and a fluorine-containing polymer are directly and rigidly affixed. The laminate body has a layer (A) comprising a metal and a layer (B) formed on layer (A), and is characterized by: layer (B) comprising a copolymer containing a polymerization unit that is on the basis of tetrafluoroethylene and a polymerization unit that is on the basis of perfluoro(alkyl vinyl ether); the copolymer having a carboxyl group at the primary chain terminus, a melt flow rate of at least 20 g / 10 minutes, and a melting point of no greater than 295 DEG C; and the metal being at least one selected from the group consisting of copper, stainless steel, aluminum, iron, and an alloy thereof.

Description

【Technical field】 [0001] The present invention relates to a laminate and a method for producing the laminate. 【Background technique】 [0002] Tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer is a fluorine-containing polymer that has excellent mechanical, chemical, and electrical properties and is capable of melt molding. [0003] Patent Document 1 describes a copolymer containing tetrafluoroethylene-based polymerized units (A ) and tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymers of polymerized units (B) based on perfluoro(alkyl vinyl ether), the copolymer is characterized in that (A) / (B) The molar ratio is in the range of 98.1 / 1.9 to 95.0 / 5.0, and the melt flow rate at 372°C is in the range of 35 to 60 g / 10 minutes, and M w / M n (Here, M w Indicates the weight average molecular weight, M n Indicates the number average molecular weight. ) is in the range of 1 to 1.7. [0004] In Patent Document 2, a fluororesin is described as a fluororesin that i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/082B32B1/08B32B15/08F16C1/20H02K3/02H05K1/03
CPCB32B15/08B32B1/08H05K1/034H05K3/022H05K2201/015C08F114/26C08F214/262B32B27/08B32B27/304B32B27/322B32B2457/08Y10T156/10Y10T428/3154B32B15/017B32B15/18B32B15/20B32B15/082H01B13/22
Inventor 村上辰也吉本洋之稻叶刚志助川胜通山口安行
Owner DAIKIN IND LTD