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Liquid crystal polymer composition and preparation method thereof

A liquid crystal polymer and composition technology, applied in the field of materials, can solve the problems of low impact strength, low melt viscosity, and reduce the dielectric constant of blends, so as to improve impact performance, excellent processing performance, and solve surface defects. Effect

Inactive Publication Date: 2020-06-16
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the physical conditions for the formation of liquid crystals, it can be divided into lyotropic liquid crystal polymers (LLCP) and thermotropic liquid crystal polymers (TLCP). Among them, thermotropic liquid crystal polymers (TLCP) have low melt viscosity, easy processing, and excellent mechanical properties. Performance, high chemical stability and thermal stability, but the notched impact strength of thermotropic liquid crystal polymer is not high, it needs to be toughened and strengthened, and the dielectric constant of the blend should be reduced to meet the requirements of electronic, electrical and integrated circuit packaging , electromagnetic wave shielding and other fields of increasing demand

Method used

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  • Liquid crystal polymer composition and preparation method thereof
  • Liquid crystal polymer composition and preparation method thereof
  • Liquid crystal polymer composition and preparation method thereof

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Embodiment 1

[0072] This embodiment provides a liquid crystal polymer composition prepared from the following raw materials in parts by weight:

[0073]

[0074] The preparation method of above-mentioned liquid crystal polymer composition, comprises the following steps:

[0075] (1) After drying the liquid crystal polymer A resin and liquid crystal polymer B resin at a temperature of 110° C. for 8 hours, cooling, the cooled liquid crystal polymer A resin and liquid crystal polymer B resin and the hydrogenated Styrene-butadiene-styrene copolymer grafted maleic anhydride, polytetrafluoroethylene resin, antioxidant CY, bis(2,4-dicumylphenyl) pentaerythritol diphosphite were added to the mixer for mix;

[0076] (2) The hollow glass microspheres, epoxy cyclohexyl POSS, monoalkoxy fatty acid titanate coupling agent, hyperbranched polyester polymer and erucamide are added to another mixer and mixed;

[0077](3) Add the compound mixed in step (1) into the parallel twin-screw extruder through ...

Embodiment 2

[0080] This embodiment provides a liquid crystal polymer composition prepared from the following raw materials in parts by weight:

[0081]

[0082]

[0083] The preparation method of above-mentioned liquid crystal polymer composition, comprises the following steps:

[0084] (1) After drying the liquid crystal polymer A resin and the liquid crystal polymer B resin at a temperature of 140°C for 4 hours, cooling, the cooled liquid crystal polymer A resin, liquid crystal polymer B resin and the hydrogenated Styrene-butadiene-styrene copolymer grafted maleic anhydride, polytetrafluoroethylene resin, antioxidant CY, bis(2,4-dicumylphenyl) pentaerythritol diphosphite were added to the mixer for mix;

[0085] (2) The hollow glass microspheres, glycidyl POSS, monoalkoxy fatty acid titanate coupling agent, hyperbranched polyester polymer, and erucamide are added to another mixer and mixed;

[0086] (3) Add the compound mixed in step (1) into the parallel twin-screw extruder thr...

Embodiment 3

[0089] This embodiment provides a liquid crystal polymer composition prepared from the following raw materials in parts by weight:

[0090]

[0091]

[0092] The preparation method of above-mentioned liquid crystal polymer composition, comprises the following steps:

[0093] (1) After drying the liquid crystal polymer A resin and the liquid crystal polymer B resin at a temperature of 120°C for 6 hours, cooling, the cooled liquid crystal polymer A resin, liquid crystal polymer B resin and the hydrogenated Styrene-butadiene-styrene copolymer grafted maleic anhydride, polytetrafluoroethylene resin, antioxidant CY, bis(2,4-dicumylphenyl) pentaerythritol diphosphite were added to the mixer for mix;

[0094] (2) The hollow glass microspheres, glycidyl POSS, monoalkoxy fatty acid titanate coupling agent, hyperbranched polyester polymer, and erucamide are added to another mixer and mixed;

[0095] (3) Add the compound mixed in step (1) into the parallel twin-screw extruder thr...

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Abstract

The invention relates to a liquid crystal polymer composition and a preparation method thereof. The liquid crystal polymer composition is prepared from the following raw materials: liquid crystal polymer A resin, liquid crystal polymer B resin, hydrogenated styrene-butadiene-styrene copolymer grafted maleic anhydride, hollow glass beads, a polyhedral oligomeric silsesquioxane polymer, low-dielectric-constant glass fibers, a titanate coupling agent, polytetrafluoroethylene resin, a hyperbranched polyester polymer, erucyl amide, an antioxidant CY, and bis(2,4-dicumyl phenyl) pentaerythritol diphosphite. The liquid crystal polymer composition has excellent mechanical properties, processability, thermal properties and low dielectric constant, and can be applied to shells, cladding and protective materials and the like of 5G base stations, micro base station systems, data communication terminals, antennas and radio frequency modules.

Description

technical field [0001] The invention relates to the field of materials, in particular to a liquid crystal polymer composition and a preparation method thereof. Background technique [0002] Dielectric materials, also known as dielectrics, are electrical insulating materials. According to performance, there are high dielectric materials and low dielectric materials. For low dielectric materials, with the rapid development of electronic information technology, electronic products are developing in the direction of lightweight, high performance and multifunctionality, and it is increasingly necessary to develop low dielectric constant ( D. k <3) Materials. At the same time, with the advent of the 5G era, the requirements for the transmission speed and loss of electronic signals are higher than those of 4G products. Usually, 4G products only require the dielectric constant of resin materials to be less than 3.7 (1GHz), while 5G products require The dielectric constant of ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L67/00C08L27/18C08L51/00C08L83/06C08K13/04C08K7/28C08K7/14C08K5/10C08K5/20C08K5/3492C08K5/527
CPCC08L67/04C08L2201/08C08L2205/02C08L2205/035C08L2205/025C08L67/00C08L27/18C08L51/006C08L83/06C08K13/04C08K7/28C08K7/14C08K5/10C08K5/20C08K5/3492C08K5/527
Inventor 王忠强丁佳冯刚卢健体
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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