Thermoplastic liquid crystal polymer molding and method for manufacturing same

A thermoplastic polymer, liquid crystal polymer technology, applied in surface pretreatment bonding methods, chemical instruments and methods, synthetic resin layered products, etc., can solve problems such as low adhesion and achieve high initial adhesion , The effect of high long-term reliability and excellent maintenance of adhesive strength

Pending Publication Date: 2021-03-19
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thermoplastic liquid crystal polymers have a problem of inherently low adhesiveness

Method used

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  • Thermoplastic liquid crystal polymer molding and method for manufacturing same
  • Thermoplastic liquid crystal polymer molding and method for manufacturing same
  • Thermoplastic liquid crystal polymer molding and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0188] In the plasma continuous processing device where the unwinding and winding of the film is set inside the vacuum chamber, the thermoplastic liquid crystal polymer film is set in such a way as to pass between parallel plate electrodes (electrode area 5 cm × 60 cm, head-film distance 5 mm) (manufactured by Kuraray Co., Ltd., "VECSTAR", thickness 50 μm) (direct method). Exhaust the inside of the vacuum tank with a vacuum pump, and then introduce N 2 and O 2 , adjust the vacuum inside the vacuum tank to 3Pa. The processing mode is set to direct plasma mode (DP), the discharge frequency is set to 150kHz, the power is set to 1kW, and plasma is generated between electrodes by applying a continuous waveform voltage discharge method (output 3.3W / cm 2 ), the film was wound up at a speed of 3 m / min, whereby the plasma treatment of the surface of the thermoplastic liquid crystal polymer film was continuously performed. Calculated from the results of X-ray photoelectron spe...

Embodiment 2

[0191] In a plasma continuous processing device equipped with unwinding and winding of the film, a thermoplastic liquid crystal polymer film was set in such a way as to pass between parallel plate electrodes (electrode area 2.4 cm × 64 cm, head-film distance 5 mm) (Co., Ltd. Made by Kuraray, "VECSTAR", thickness 50μm) (direct method). Import N 2 and O 2 As the type of gas, set the treatment mode to direct plasma mode (DP), set the discharge frequency to 40kHz, and the power to 0.8kW, and apply a pulse-shaped waveform voltage to generate a discharge between the electrodes. Plasma (output 5.2W / cm 2 ), the film was wound up at a speed of 3 m / min, whereby the plasma treatment of the surface of the thermoplastic liquid crystal polymer film was continuously performed. Calculated from the results of X-ray photoelectron spectroscopy analysis of the surface of the bonded part of the thermoplastic liquid crystal polymer film after plasma treatment , and And their sum and rati...

Embodiment 3

[0194] In addition to setting the gas type to N 2 , O 2 and H 2 Other than O, it carried out similarly to Example 1. Calculated from the results of X-ray photoelectron spectroscopy analysis of the surface of the bonded part of the thermoplastic liquid crystal polymer film after plasma treatment , and , their sum and ratio, and the adhesive strength before and after PCT of the laminate with the low-dielectric adhesive sheet are shown in Table 7.

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Abstract

Provided are a thermoplastic liquid crystal polymer molding having good adhesion, and a method for manufacturing the same. The thermoplastic liquid crystal polymer molding is a molding constituted from a thermoplastic polymer whereby an optically anisotropic molten phase can be formed, and has a region to be bonded in at least a portion thereof, and in the results of X-ray photoelectron spectroscopic analysis of the surface of the region to be bonded, the ratio / of the proportion of the peak area of [C-O bonds] and the proportion of the peak area of [COO bonds] to the peak area of C (1s) is 1.5 or greater, and the ratio / of the proportion of the peak area of [C=O bonds] and the proportion of the peak area of [COO bonds] to the peak area of C (1s) is 0.10 or greater.

Description

[0001] Associate application [0002] This application claims priority from Japanese Patent Application No. 2018-106076 filed on June 1, 2018, the entirety of which is incorporated by reference as a part of this application. technical field [0003] The present invention relates to a molded article of a thermoplastic polymer (hereinafter referred to as a thermoplastic liquid crystal polymer) capable of forming an optically anisotropic melt phase having excellent adhesiveness and a method for producing the same. Background technique [0004] Thermoplastic liquid crystal polymer molded articles have low dielectric properties (low dielectric constant and low dielectric loss tangent) due to properties derived from thermoplastic liquid crystal polymers, and thus are attracting attention in applications where dielectric properties are important. [0005] For example, in recent years, along with the increase in the speed of transmission signals in printed wiring boards, the increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00C08J5/12C09J5/02B32B15/08B32B27/36
CPCC08J7/00C09J5/02C09J2400/226C09J2400/228B32B2307/748B32B7/12B32B27/36B32B2307/204B32B27/16B32B2457/08B32B15/20B32B2307/538B32B2307/732B32B15/09B32B27/08C08J5/18C08J5/12C08J7/12H05K1/03B32B15/08B32B38/0008C08J2367/04C08J7/123
Inventor 砂本辰也平松慎二小野寺稔
Owner KURARAY CO LTD
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