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A liquid crystal composition and a high-frequency component containing it

A liquid crystal composition and composition technology, applied in liquid crystal materials, electrical components, waveguide devices, etc., can solve problems such as slow response speed and increased rotational viscosity, and achieve high quality factor, low melting point, and low dielectric loss Effect

Active Publication Date: 2021-10-01
XIAN MODERN CHEM RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Its thermal performance data is: Cr 73.0N 144.8I. Although the melting point of this compound is lowered, the rotational viscosity is further increased, resulting in a further slower response speed

Method used

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  • A liquid crystal composition and a high-frequency component containing it
  • A liquid crystal composition and a high-frequency component containing it
  • A liquid crystal composition and a high-frequency component containing it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Table 1 embodiment 1 composition and performance thereof

[0082]

[0083]

Embodiment 2

[0085] Table 2 embodiment 2 composition and performance thereof

[0086]

[0087]

Embodiment 3

[0089] Table 3 embodiment 3 composition and performance thereof

[0090]

[0091]

[0092] The above embodiments have low dielectric loss, high tuning rate, high quality factor, and wide nematic phase temperature range, especially have very low low-temperature storage performance, and are very suitable for high-frequency components.

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Abstract

The invention discloses a liquid crystal composition and a high-frequency component containing it. The liquid crystal composition comprises 1%~100% compound 0~65% compound 0~90% compound wherein, R 1 ~R 3 are alkyl, alkoxy, fluoroalkyl or alkenyl, respectively; X 1 、X 2 Yes‑H,‑CH 3 ,-CH 2 CH 3 or one of ‑Cl with at least one being ‑CH 3 ,-CH 2 CH 3 or one of ‑Cl; X 3 ~X 9 is ‑H or ‑F; Z 1 ,Z 2 is a single bond, double bond, triple bond, ‑CH 2 CH 2 One of ‑, ‑COO‑; ring A is benzene ring or cyclohexane, and when A is cyclohexane, it is a trans structure; m, n, P are 0 or 1 and m and n cannot be 1 at the same time. The invention not only has low dielectric loss and high quality factor, but also has the advantage of wide temperature range of nematic phase, and is suitable for fields such as filters, phase shifters, phased array radars, and 5G communication networks.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and specifically relates to a liquid crystal composition and a high-frequency component containing it, and is mainly applicable to filters, adjustable frequency selection surfaces, phase shifters, phased array radars, satellite navigation and 5G communication networks roads and other areas. Background technique [0002] In recent years, liquid crystal materials with low dielectric loss and high dielectric tuning rate have been widely used in liquid crystal microwave device technologies such as filters, adjustable frequency selective surfaces, phase shifters, phased array radars, and 5G communication networks. focus on. As the core tuning material of microwave devices, the dielectric tuning rate of liquid crystal materials determines the tuning ability of microwave devices. For liquid crystal materials, the dielectric tuning rate is determined by the dielectric anisotropy (Δε) o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44H01P1/18H01P1/20
CPCC09K19/44H01P1/18H01P1/20
Inventor 李娟利李建胡明刚车昭毅莫玲超杨晓哲安忠维张璐万丹阳杨诚陈小川朱红赵伟利刘明星李锐孙海雁于美娜
Owner XIAN MODERN CHEM RES INST
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