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Polymer dispersion liquid, preparation method thereof, polymer composite membrane and application of polymer composite membrane

A polymer dispersion and polymer technology, which is applied in the field of polymer material preparation, can solve the problems of high difficulty, many limitations of film forming process, low solid content and viscosity, etc., to improve mechanical properties, increase solid content, reduce Df and Effect of thermal expansion coefficient

Pending Publication Date: 2022-05-31
ZHEN DING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solid content and viscosity of the LCP material are low, and it needs to be formed under solvent-free and high-temperature conditions. The film-forming process has many restrictions, and it is also difficult to make a copper-clad laminate by pressing it with a copper plate after the film is formed.

Method used

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  • Polymer dispersion liquid, preparation method thereof, polymer composite membrane and application of polymer composite membrane
  • Polymer dispersion liquid, preparation method thereof, polymer composite membrane and application of polymer composite membrane
  • Polymer dispersion liquid, preparation method thereof, polymer composite membrane and application of polymer composite membrane

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preparation example Construction

[0039] The present invention also provides a kind of preparation method of polymer dispersion liquid, comprises the following steps:

[0040] The first step is to synthesize polyamic acid solution.

[0041] Wherein, the polyamic acid is formed by polymerizing two kinds of diamine monomers and two kinds of dianhydride monomers, and the two kinds of diamine monomers and the two kinds of dianhydride monomers contain liquid crystal structure and flexible structure respectively. .

[0042] In this embodiment, diamine monomers containing liquid crystal structures include but are not limited to p-aminophenyl p-aminobenzoate (APAB), 1,4-bis(4-aminophenoxy)benzene (ABHQ) and p-aminophenylene One or more of bis-p-aminophenyl formate (BPTP). Diamine monomers with flexible structures include but are not limited to 4,4'-diaminodiphenyl ether (ODA), 2,2'-bis[4-(4-aminophenoxyphenyl)]propane (BAPP) One or more of 1,3-bis(4'-aminophenoxy)benzene (TPE-R) and 1,3-bis(3-aminophenoxy)benzene (...

Synthetic example 1

[0076] Add NMP (243.8g) and TPE-M (0.1mol, 29.23g) into a 500mL reaction bottle respectively, and after stirring until dissolved, add BPADA (0.1mol, 52.05g) and stir for 48 hours to complete the configuration of the polyamide acid solution.

Synthetic example 2

[0078] Add NMP (205.97g) and APAB (0.1mol, 22.83g) into a 500mL reaction bottle respectively, after stirring until dissolved, then add TAHQ (0.1mol, 45.83g) and stir for 48 hours to complete the configuration of the polyamic acid solution .

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Abstract

The invention relates to a polymer dispersion liquid and a preparation method thereof, and a polymer composite film and application thereof, the polymer dispersion liquid comprises liquid crystal polymer powder, polyamide acid and a solvent, the solid components of the polymer dispersion liquid comprise polyamide acid and liquid crystal polymer powder, the weight percentage of the liquid crystal polymer powder in the solid components of the polymer dispersion liquid is 20-30%, and the weight percentage of the solvent in the solid components of the polymer dispersion liquid is 20-30%. The weight percentage of the polyamide acid in the solid components of the polymer dispersion liquid is 70-80%, the polyamide acid is formed by polymerizing two diamine monomers and two dianhydride monomers, and the two diamine monomers and the two dianhydride monomers respectively contain a liquid crystal structure and a flexible structure. The polymer dispersion liquid provided by the invention can effectively improve the solid content and viscosity of the dispersion liquid, and is beneficial to film formation; and the formed copper-clad plate has excellent electrical property and mechanical property.

Description

technical field [0001] The invention relates to the technical field of polymer material preparation, in particular to a method for preparing a polymer dispersion, a polymer composite film and applications thereof. Background technique [0002] Signal transmission losses in printed circuit boards are partly due to losses caused by dielectric layers. The loss caused by the dielectric layer is usually related to the dielectric constant and dielectric loss factor of the dielectric layer material. In addition, the polarity of the dielectric layer material will affect the stability of electron transmission in the wire. If the polarity of the molecular structure in the insulating layer material is too large, after the circuit board is polarized, the electrons in the wire will be attracted by the dielectric layer. Seriously affect the stability of electron transport. Therefore, how to effectively design the polymer structure of the dielectric layer, reduce the dielectric loss of t...

Claims

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Application Information

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IPC IPC(8): C08J3/09C08J3/11C08J5/18C08L79/08C08L67/00C08G73/10B32B15/08B32B15/20B32B27/28
CPCC08J3/096C08J3/11C08J5/18C08G73/1071C08G73/1042C08G73/1007B32B27/281B32B15/20B32B15/08B32B2307/20B32B2307/30B32B2307/50C08J2379/08C08J2467/00C08G73/16C08L79/08C08L67/00C08G69/265C08L67/03C08G69/32C08K2201/005C08L2201/56C08L2203/16C08L2203/20C08L2205/12C08L2312/00
Inventor 李冠纬苏赐祥向首睿吴佩蓉黄炜新
Owner ZHEN DING TECH CO LTD