CN111040775B - A wide temperature liquid crystal composition, a wide temperature polymer dispersed liquid crystal composition and a wide temperature polymer dispersed liquid crystal film - Google Patents

A wide temperature liquid crystal composition, a wide temperature polymer dispersed liquid crystal composition and a wide temperature polymer dispersed liquid crystal film Download PDF

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CN111040775B
CN111040775B CN201811183595.3A CN201811183595A CN111040775B CN 111040775 B CN111040775 B CN 111040775B CN 201811183595 A CN201811183595 A CN 201811183595A CN 111040775 B CN111040775 B CN 111040775B
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祝春才
杨亚非
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Jiangsu Hecheng Display Technology Co Ltd
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    • C09K19/44Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
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    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F1/1334Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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Abstract

The invention provides a wide-temperature liquid crystal composition for polymer dispersed liquid crystal, a wide-temperature polymer dispersed liquid crystal composition and a wide-temperature polymer dispersed liquid crystal film, wherein the liquid crystal composition consists of at least two liquid crystal molecules, and the wide-temperature polymer dispersed liquid crystal film prepared from the wide-temperature liquid crystal composition has the advantages of low driving voltage, quick response, good optical performance, high reliability, wide use temperature range and the like, and solves the problems of poor reliability and narrow working temperature range of a PDLC product in the prior art.

Description

一种宽温液晶组合物、宽温聚合物分散液晶组合物及宽温聚 合物分散液晶薄膜A wide temperature liquid crystal composition, a wide temperature polymer dispersed liquid crystal composition and a wide temperature polymer dispersed liquid crystal film

技术领域Technical Field

本发明属于液晶材料及液晶显示器件技术领域,涉及一种液晶组合物,尤其涉及一种宽温液晶组合物,特别涉及一种宽温液晶组合物、宽温聚合物分散液晶组合物及宽温聚合物分散液晶薄膜。The present invention belongs to the technical field of liquid crystal materials and liquid crystal display devices, and relates to a liquid crystal composition, in particular to a wide temperature liquid crystal composition, and particularly to a wide temperature liquid crystal composition, a wide temperature polymer dispersed liquid crystal composition and a wide temperature polymer dispersed liquid crystal film.

背景技术Background Art

聚合物分散液晶(Polymer Dispersed Liquid Crystal,PDLC)是一种新型的具有光电性能的复合液晶材料,对此液晶材料的研究始于几十年前的偶然发现,它其是由液晶和聚合物构成的两相体系,通过UV或加热方法,将小分子液晶分散于透明聚合物体系中,形成微米尺寸或纳米尺寸的液晶微滴,聚合物体系为小分子液晶提供了稳定的网络结构。PDLC的应用强烈依赖于两相体系的成分、形态、尺寸、相界面的性质、粒度控制及两相性质的匹配等。Polymer Dispersed Liquid Crystal (PDLC) is a new type of composite liquid crystal material with optoelectronic properties. The research on this liquid crystal material began with an accidental discovery decades ago. It is a two-phase system composed of liquid crystal and polymer. Through UV or heating methods, small molecule liquid crystals are dispersed in a transparent polymer system to form micron-sized or nano-sized liquid crystal droplets. The polymer system provides a stable network structure for small molecule liquid crystals. The application of PDLC strongly depends on the composition, morphology, size, properties of the phase interface, particle size control and matching of the properties of the two phases.

在无外加电压的情况下,PDLC薄膜间不能形成有规律的电场,液晶分子的光轴取向随机,呈现无序状态,其有效折射率与聚合物的折射率不匹配,入射光线被强烈散射,PDLC薄膜呈不透明或半透明状;施加外电压后,液晶分子的光轴垂直于薄膜表面排列,即与电场方向一致,液晶分子的有效折射率与聚合物的折射率基本匹配,无明显界面,构成了基本均匀的介质,入射光基本不发生散射,PDLC薄膜呈透明状。因此,在外加电场的作用下,PDLC薄膜具备光开关特性。具体地,PDLC薄膜可以作为智能玻璃,通过聚合物材料对光和/或热的感应,可在电压驱动下形成遮蔽性,从而达到控制室温的目的,同时具有节能环保的效果,该类PDLC薄膜被广泛应用于汽车车窗贴膜、窗帘、屏风等产品。In the absence of an external voltage, a regular electric field cannot be formed between the PDLC films, the optical axis orientation of the liquid crystal molecules is random and disordered, its effective refractive index does not match the refractive index of the polymer, the incident light is strongly scattered, and the PDLC film is opaque or translucent; after applying an external voltage, the optical axis of the liquid crystal molecules is arranged perpendicular to the surface of the film, that is, consistent with the direction of the electric field, the effective refractive index of the liquid crystal molecules is basically matched with the refractive index of the polymer, there is no obvious interface, and a basically uniform medium is formed. The incident light is basically not scattered, and the PDLC film is transparent. Therefore, under the action of an external electric field, the PDLC film has optical switching characteristics. Specifically, the PDLC film can be used as smart glass. Through the induction of light and/or heat by the polymer material, it can form a shielding property under voltage drive, thereby achieving the purpose of controlling the room temperature, and at the same time has the effect of energy saving and environmental protection. This type of PDLC film is widely used in automotive window films, curtains, screens and other products.

由于液晶分子具有光学各向异性和介电各向异性,因此PDLC薄膜具有显著的光学特性,衡量其光电性能的指标有:驱动电压、响应时间、透过率等。以上性能显著依赖于所选材料、制备方法和工艺等因素。此外,PDLC薄膜的结构和应用性质还受制于工艺条件,工艺条件的细微差别可能对相分离程度、相分离速度、两相结构和形态以及相界面结构和性质产生不可忽视的影响,进而影响PDLC薄膜的驱动电压、响应时间、雾度、视角、透光度等参数。Since liquid crystal molecules have optical anisotropy and dielectric anisotropy, PDLC films have significant optical properties. The indicators for measuring their photoelectric performance include: driving voltage, response time, transmittance, etc. The above performances are significantly dependent on factors such as the selected materials, preparation methods and processes. In addition, the structure and application properties of PDLC films are also subject to process conditions. Slight differences in process conditions may have a significant impact on the degree of phase separation, phase separation speed, two-phase structure and morphology, and phase interface structure and properties, which in turn affect the driving voltage, response time, haze, viewing angle, transmittance and other parameters of the PDLC film.

现有的PDLC产品在可靠性方面尚有较大的改进公开,长时间的高温、日照环境下容易出现产品功耗增大、黄变、光开关特性变差等缺点;此外,还可能发生在高温环境下(特别是在60℃以上)关态雾度变差,失去遮蔽性,失去光开关的特性。The existing PDLC products still have much to be improved in terms of reliability. Under long-term high temperature and sunlight environment, they are prone to increased power consumption, yellowing, and deterioration of optical switch characteristics. In addition, under high temperature environment (especially above 60°C), the off-state haze may deteriorate, the shielding property may be lost, and the optical switch characteristics may be lost.

发明内容Summary of the invention

为解决现有技术中存在的技术问题,本发明提供一种宽温液晶组合物、宽温聚合物分散液晶组合物和宽温聚合物分散液晶薄膜,具有驱动电压低、响应快、光学性能良好、可靠性高、使用温度范围宽等优点,解决了现有技术中PDLC产品可靠性差,工作温度范围窄的问题。In order to solve the technical problems existing in the prior art, the present invention provides a wide temperature liquid crystal composition, a wide temperature polymer dispersed liquid crystal composition and a wide temperature polymer dispersed liquid crystal film, which have the advantages of low driving voltage, fast response, good optical performance, high reliability, and a wide operating temperature range, thereby solving the problems of poor reliability and narrow operating temperature range of PDLC products in the prior art.

本发明目的之一在于提供一种聚合物分散液晶的宽温液晶组合物,所述组合物包括组份A和组份B,所述组份A包括式I-1和/或I-2所示的化合物,组份B包括式II-1、II-2或II-3中的任意一种化合物或至少两种化合物的组合;One of the objects of the present invention is to provide a wide temperature liquid crystal composition of a polymer dispersed liquid crystal, the composition comprising component A and component B, the component A comprising a compound represented by formula I-1 and/or I-2, and the component B comprising any one compound or a combination of at least two compounds of formula II-1, II-2 or II-3;

其中,R1、R2、R3、R5和R7分别独立地为C1~C10链状烷基或烷氧基,环A、环B、环C、环D、环E、环F、环G、环H和环I分别独立地为1,4-亚环己基、1,4-亚苯基、1,4-亚环己基中至少一个-CH2-被-O-替代的基团、1,4-亚环己基中至少一个碳碳单键被碳碳双键替代的基团、1,4-亚苯基中至少一个-H被-CN、-F或-Cl取代的基团或1,4-亚苯基中至少一个-CH=被-N=替代的基团,Z1、Z2、Z3、Z4、Z5或Z6分别独立地为单键或-COO-,X1~X4以及Y1~Y6分别独立地为-H或-F,R4、R6和R8分别独立地为卤素、含有1-5个碳原子的卤代烷基或卤代烷氧基、含有2-5个碳原子的卤代烯基或卤代烯氧基,优选地,R4、R6和R8分别独立地为-F、-CF3或-OCF3中的任意一种。wherein R 1 , R 2 , R 3 , R 5 and R 7 are each independently a C1-C10 chain alkyl or alkoxy group; Ring A, Ring B, Ring C, Ring D, Ring E, Ring F, Ring G, Ring H and Ring I are each independently a 1,4-cyclohexylene group, a 1,4-phenylene group, a group in which at least one -CH 2 - in a 1,4-cyclohexylene group is replaced by -O-, a group in which at least one carbon-carbon single bond in a 1,4-cyclohexylene group is replaced by a carbon-carbon double bond, a group in which at least one -H in a 1,4-phenylene group is replaced by -CN, -F or -Cl, or a group in which at least one -CH= in a 1,4-phenylene group is replaced by -N=; Z 1 , Z 2 , Z 3 , Z 4 , Z 5 or Z 6 are each independently a single bond or -COO-; X 1 to X 4 and Y 1 to Y 6 are each independently -H or -F; R 4 , R 6 and R 8 are independently halogen, haloalkyl or haloalkoxy containing 1-5 carbon atoms, haloalkenyl or haloalkenyloxy containing 2-5 carbon atoms. Preferably, R 4 , R 6 and R 8 are independently any one of -F, -CF 3 or -OCF 3 .

本发明中,组份A和组份B中的液晶分子的组合,使液晶组合物介电各向异性大,清亮点高,折射率各向异性大,同时低温存储性能好,与高分子UV聚合物的互溶性好。In the present invention, the combination of liquid crystal molecules in component A and component B makes the liquid crystal composition have large dielectric anisotropy, high clearing point, large refractive index anisotropy, good low-temperature storage performance, and good miscibility with high-molecular UV polymers.

作为本发明优选的技术方案,所述宽温液晶组合物清亮点大于等于100℃,折射率大于等于0.18。As a preferred technical solution of the present invention, the wide temperature liquid crystal composition has a clearing point greater than or equal to 100° C. and a refractive index greater than or equal to 0.18.

本发明中,上述对宽温液晶组合物的限定可以使薄膜工作温度范围宽,光学性能好,对比度佳。In the present invention, the above-mentioned limitation on the wide temperature liquid crystal composition can make the film have a wide operating temperature range, good optical properties and excellent contrast.

优选地,所述组合物包括50~90wt%的组份A以及10~50wt%的组份B,优选为55~85wt%的组份A以及15~45wt%的组份B,进一步优选为60~85wt%的组份A以及15~40wt%的组份B。Preferably, the composition comprises 50-90wt% of component A and 10-50wt% of component B, preferably 55-85wt% of component A and 15-45wt% of component B, and further preferably 60-85wt% of component A and 15-40wt% of component B.

其中,组份A的质量分数可以是50wt%、55wt%、60wt%、65wt%、70wt%、75wt%、80wt%、85wt%或90wt%等,组份B的质量分数可以是10wt%、15wt%、20wt%、25wt%、30wt%、35wt%、40wt%、45wt%或50wt%等,但并不仅限于所列举的数值,该数值范围内其他未列举的数值同样适用。Among them, the mass fraction of component A can be 50wt%, 55wt%, 60wt%, 65wt%, 70wt%, 75wt%, 80wt%, 85wt% or 90wt%, etc., and the mass fraction of component B can be 10wt%, 15wt%, 20wt%, 25wt%, 30wt%, 35wt%, 40wt%, 45wt% or 50wt%, etc., but is not limited to the listed values, and other unlisted values within the numerical range are also applicable.

本发明中,组份A的含量低于50%或组份B的含量高于50%,液晶组合物介电各向异性较小,导致驱动电压较高。In the present invention, when the content of component A is lower than 50% or the content of component B is higher than 50%, the dielectric anisotropy of the liquid crystal composition is relatively small, resulting in a higher driving voltage.

作为本发明优选的技术方案,所述式I-1所示化合物选自如下化合物中的任意一种或至少两种的组合:As a preferred technical solution of the present invention, the compound represented by formula I-1 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-1所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-1 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-1-2所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-1-2 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-1-3所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-1-3 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-1-4所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-1-4 is selected from any one or a combination of at least two of the following compounds:

其中R1'为C1~C10链状烷基。Wherein R 1 ' is a C1-C10 chain alkyl group.

优选地,所述式I-1-5所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-1-5 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-1所示化合物优选为通式I-1-1-1、通式I-1-4-1、通式I-1-4-2、通式I-1-5-1或通式I-1-2-1的化合物中的任意一种或至少两种的组合。其中,所述组合典型但非限制性实例有:CPN和CGN的组合,CEPN和PEGN的组合,CPN、CGN和PPN的组合,CPN、CGN、PPN和OPPN的组合,CGN、PPN、OPPN、PEPN和CEPN的组合、CPN、PPN、OPPN、PEPN和CEPN的组合,CPN、CGN、PPN、PEGN、PEUN和CEUN的组合,CPN、CGN、PPN、OPPN、PEPN、CEPN、PEGN、PEUN、CEUN、CUN和DUN的组合等。Preferably, the compound represented by formula I-1 is preferably any one or a combination of at least two of the compounds of formula I-1-1-1, I-1-4-1, I-1-4-2, I-1-5-1 or I-1-2-1. Typical but non-limiting examples of the combination include: a combination of CPN and CGN, a combination of CEPN and PEGN, a combination of CPN, CGN and PPN, a combination of CPN, CGN, PPN and OPPN, a combination of CGN, PPN, OPPN, PEPN and CEPN, a combination of CPN, PPN, OPPN, PEPN and CEPN, a combination of CPN, CGN, PPN, PEGN, PEUN and CEUN, a combination of CPN, CGN, PPN, OPPN, PEPN, CEPN, PEGN, PEUN, CEUN, CUN and DUN, etc.

优选地,所述式I-2所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-2 is selected from any one or a combination of at least two of the following compounds:

所述X5和X6分别独立地为-H或-F,且X5与X6中至多一个为-F。Said X5 and X6 are independently -H or -F, and at most one of X5 and X6 is -F.

优选地,所述式I-2-1所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-2-1 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-2-2所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-2-2 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-2-3所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-2-3 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-2-4所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-2-4 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-2-5所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-2-5 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-2-6所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-2-6 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-2-7所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula I-2-7 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式I-2所示化合物优选为通式I-2-2-1、通式I-2-3-1、通式I-2-4-1、通式I-2-2-2、通式I-2-7-2、通式I-2-6-2或通式I-2-3-2的化合物中的任意一种或至少两种的组合。其中,所述组合典型但非限制性实例有:CPPN和PPPN的组合,PPPN和CEPPN的组合,CCEPN、CCEGN和CPEGN的组合,CPPN、PPPN、CEPPN和CCEPN的组合,CCUN、CPUN、PEPPN、CPEPN和PGPN的组合,CPPN、PPPN、CEPPN、CCEPN、CCEGN和NPGP的组合,CPPN、PPPN、CEPPN、NPGP、CPGN、CPEGN、CCEGN和PGPN的组合等。Preferably, the compound represented by formula I-2 is preferably any one or a combination of at least two of the compounds of formula I-2-2-1, I-2-3-1, I-2-4-1, I-2-2-2, I-2-7-2, I-2-6-2 or I-2-3-2. Typical but non-limiting examples of the combination include: a combination of CPPN and PPPN, a combination of PPPN and CEPPN, a combination of CCEPN, CCEGN and CPEGN, a combination of CPPN, PPPN, CEPPN and CCEPN, a combination of CCUN, CPUN, PEPPN, CEPPN and PGPN, a combination of CPPN, PPPN, CEPPN, CCEPN, CCEGN and NPGP, a combination of CPPN, PPPN, CEPPN, NPGP, CPGN, CPEGN, CCEGN and PGPN, etc.

作为本发明优选的技术方案,所述式II-1所示化合物选自如下化合物中的任意一种或至少两种的组合:As a preferred technical solution of the present invention, the compound represented by formula II-1 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-1-1所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-1-1 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-1-2所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-1-2 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-1-3所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-1-3 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-1-4所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-1-4 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-1所示化合物优选为通式II-1-1-1或通式II-1-3-3的化合物中的任意一种或至少两种的组合;Preferably, the compound represented by formula II-1 is preferably any one or a combination of at least two of the compounds represented by general formula II-1-1-1 or general formula II-1-3-3;

优选地,所述式II-2所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-2 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-2-1所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-2-1 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-2-2所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-2-2 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-2-3所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-2-3 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-2-4所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-2-4 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-2-5所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-2-5 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-2-6所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-2-6 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-2-7所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-2-7 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-2所示化合物优选为通式II-2-1-4、通式II-2-3-4、通式II-2-5-1、通式II-2-5-3或通式II-2-5-4的化合物中的任意一种或至少两种的组合。其中,所述组合典型但非限制性实例有:CCGF和CCUF的组合,CPUF和PPUF的组合,PGUF、PGPF和CPGF的组合、CCEGF、CPEGF、CCPOCF3和CPPOCF3的组合,CCUF、CPUF、PGUF、PPUF和PGPF的组合,CCEUF、CPEUF、CCEPF、CPEPF、CDUF和DPUF的组合等。Preferably, the compound represented by formula II-2 is preferably any one or a combination of at least two of the compounds of formula II-2-1-4, formula II-2-3-4, formula II-2-5-1, formula II-2-5-3 or formula II-2-5-4. Typical but non-limiting examples of the combination include: a combination of CCGF and CCUF, a combination of CPUF and PPUF, a combination of PGUF, PGPF and CPGF, a combination of CCEGF, CPEGF, CCPOCF3 and CPPOCF3, a combination of CCUF, CPUF, PGUF, PPUF and PGPF, a combination of CCEUF, CPEUF, CCEPF, CPEPF, CDUF and DPUF, etc.

优选地,所述式II-3所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-3 is selected from any one or a combination of at least two of the following compounds:

所述Y7~Y10分别独立地为-H或-F。The Y 7 to Y 10 are each independently -H or -F.

优选地,所述式II-3-1所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-3-1 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-3-2所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-3-2 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-3-3所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-3-3 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-3-4所示化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula II-3-4 is selected from any one or a combination of at least two of the following compounds:

优选地,所述式II-3所示化合物优选为通式II-3-1-3、通式II-3-1-4或通式II-3-3-3的化合物中的任意一种或至少两种的组合。其中,所述组合典型但非限制性实例有:CCPUF和CCPGF的组合,CCGUF和CPGUF的组合,CDPUF和DPGUF的组合、CCPUF、CCPGF和CCGUF的组合,CCPUF、CCGUF和CPGUF的组合,CCPUF、CCPGF、CDPUF和DPGUF的组合,CCPUF、CCPGF、CCGUF、CPGUF、CDPUF和DPGUF的组合等。Preferably, the compound represented by formula II-3 is preferably any one or a combination of at least two of the compounds of formula II-3-1-3, formula II-3-1-4 or formula II-3-3-3. Typical but non-limiting examples of the combination include: a combination of CCPUF and CCPGF, a combination of CCGUF and CPGUF, a combination of CDPUF and DPGUF, a combination of CCPUF, CCPGF and CCGUF, a combination of CCPUF, CCGUF and CPGUF, a combination of CCPUF, CCPGF, CDPUF and DPGUF, a combination of CCPUF, CCPGF, CCGUF, CPGUF, CDPUF and DPGUF, a combination of CCPUF, CCPGF, CCGUF, CPGUF, CDPUF and DPGUF, and the like.

作为本发明优选的技术方案,所述宽温液晶组合物包括式III所示的化合物:As a preferred technical solution of the present invention, the wide temperature liquid crystal composition comprises a compound shown in Formula III:

其中,其中,R9和R10分别独立地为C1-C10的直链烷基或烷氧基,J和K分别独立地为1,4-亚环己基或1,4-亚苯基,Y11和Y12分别独立地为-H或-F,a为0或1,若a为1,则J和K不同时为1,4-亚苯基。Wherein, R 9 and R 10 are each independently a C1-C10 straight-chain alkyl or alkoxy group, J and K are each independently a 1,4-cyclohexylene group or a 1,4-phenylene group, Y 11 and Y 12 are each independently -H or -F, a is 0 or 1, and if a is 1, J and K are not both 1,4-phenylene groups.

优选地,所述式III所示的化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula III is selected from any one or a combination of at least two of the following compounds:

其中,所述组合典型但非限制性实例有:CPPC和PGPC的组合,CPGP和CGPC的组合,CGPC和PGP的组合,CPPC、PGPC和CPGP的组合,CPGP、CGPC、PGP、和CPP的组合,CPPC、PGPC、CPGP、CGPC和PGP的组合或CPPC、PGPC、CPGP、CGPC、PGP和CPP的组合等。Among them, typical but non-limiting examples of the combination include: a combination of CPPC and PGPC, a combination of CPGP and CGPC, a combination of CGPC and PGP, a combination of CPPC, PGPC and CPGP, a combination of CPGP, CGPC, PGP, and CPP, a combination of CPPC, PGPC, CPGP, CGPC and PGP, or a combination of CPPC, PGPC, CPGP, CGPC, PGP and CPP, etc.

优选地,所述宽温液晶组合物中式III所示的化合物质量分数为0~20wt%,如0wt%、1wt%、2wt%、5wt%、8wt%、10wt%、12wt%、15wt%、18wt%或20wt%等,但并不仅限于所列举的数值,该数值范围内其他未列举的数值同样适用。Preferably, the mass fraction of the compound represented by formula III in the wide temperature liquid crystal composition is 0 to 20wt%, such as 0wt%, 1wt%, 2wt%, 5wt%, 8wt%, 10wt%, 12wt%, 15wt%, 18wt% or 20wt%, etc., but is not limited to the listed values, and other unlisted values within the numerical range are also applicable.

本发明中,式III所示的化合物的添加可以增加液晶组合物的清亮点,同时液晶组合物的低温存储性能更好。In the present invention, the addition of the compound represented by formula III can increase the clearing point of the liquid crystal composition, and at the same time, the low-temperature storage performance of the liquid crystal composition is better.

优选地,所述宽温液晶组合物包括式IV所示的化合物:Preferably, the wide temperature liquid crystal composition comprises a compound represented by formula IV:

其中,R11为H、取代或未取代的C1~C10链状烷基、取代或未取代的C3~C5的环烷基或所述取代或未取代的C1~C10的链状烷基中的1个或不相邻的2个以上的-CH2-分别独立地被-CH=CH-、-C≡C-、-O-、-CO-、-CO-O-或-O-CO-替代的基团,所述取代基为-F或-Cl;wherein R 11 is H, a substituted or unsubstituted C1-C10 chain alkyl group, a substituted or unsubstituted C3-C5 cycloalkyl group, or a group in which one or two or more non-adjacent -CH 2 - in the substituted or unsubstituted C1-C10 chain alkyl group are independently replaced by -CH=CH-, -C≡C-, -O-, -CO-, -CO-O- or -O-CO-, and the substituent is -F or -Cl;

环L和环M各自独立地为 中至少一个-CH2-被-O-替代的基团或中至少一个碳碳单键被碳碳双键替代的基团中至少一个-H被-CN、-F或-Cl取代的基团或中至少一个-CH=被-N=替代的基团;Ring L and ring M are each independently A group in which at least one -CH 2 - is replaced by -O- or A group in which at least one carbon-carbon single bond is replaced by a carbon-carbon double bond A group in which at least one -H is replaced by -CN, -F or -Cl; or At least one -CH= in the group is replaced by -N=;

Z7表示单键、-CH2CH2-、-CF2CF2-、-CF2O-、-OCF2-、-CO-O-、-O-CO-、-O-CO-O-、-CH=CH-、-C≡C-、-CF=CF-、-CH2O-或-OCH2-中的任意一种;Z 7 represents any one of a single bond, -CH 2 CH 2 -, -CF 2 CF 2 -, -CF 2 O-, -OCF 2 -, -CO-O-, -O-CO-, -O-CO-O-, -CH=CH-, -C≡C-, -CF=CF-, -CH 2 O- or -OCH 2 -;

b表示0、1、2或3,当b=2或3时,每个环L相同或不同,每个Z7相同或不同;b represents 0, 1, 2 or 3. When b=2 or 3, each ring L is the same or different, and each Z 7 is the same or different;

X为卤素、C1-C5的卤代烷基、C1-C5的卤代烷氧基、C2-C5的卤代烯基或C2-C5的卤代烯氧基中的任意一种。X is any one of halogen, C1-C5 haloalkyl, C1-C5 haloalkoxy, C2-C5 haloalkenyl or C2-C5 haloalkenyloxy.

优选地,所述卤素为F、Cl、Br或I中的任意一种。Preferably, the halogen is any one of F, Cl, Br or I.

优选地,所述式IV所示的化合物选自如下化合物中的任意一种或至少两种的组合:Preferably, the compound represented by formula IV is selected from any one or a combination of at least two of the following compounds:

所述组合典型但非限制性实例有:PUQUF和PGUQUF的组合,PGUQUF和PGUQPOCF3的组合,PGUQPOCF3和CCQUF的组合,PUQUF和CCQUF的组合,PUQUF、PGUQUF和PGUQPOCF3的组合,PGUQUF、PGUQPOCF3和CCQUF的组合或PUQUF、PGUQUF、PGUQPOCF3和CCQUF的组合等。Typical but non-limiting examples of the combinations include: the combination of PUQUF and PGUQUF, the combination of PGUQUF and PGUQPOCF3, the combination of PGUQPOCF3 and CCQUF, the combination of PUQUF and CCQUF, the combination of PUQUF, PGUQUF and PGUQPOCF3, the combination of PGUQUF, PGUQPOCF3 and CCQUF, or the combination of PUQUF, PGUQUF, PGUQPOCF3 and CCQUF, etc.

优选地,所述所述宽温液晶组合物中式IV所示的化合物质量分数为0~15wt%,如0wt%、1wt%、2wt%、3wt%、4wt%、5wt%、6wt%、7wt%、8wt%、9wt%、10wt%、11wt%、12wt%、13wt%、14wt%或15wt%等,但并不仅限于所列举的数值,该数值范围内其他未列举的数值同样适用。Preferably, the mass fraction of the compound represented by formula IV in the wide temperature liquid crystal composition is 0 to 15wt%, such as 0wt%, 1wt%, 2wt%, 3wt%, 4wt%, 5wt%, 6wt%, 7wt%, 8wt%, 9wt%, 10wt%, 11wt%, 12wt%, 13wt%, 14wt% or 15wt%, etc., but is not limited to the listed values, and other unlisted values within the numerical range are also applicable.

本发明中,式IV所示的化合物的添加可以增加液晶组合物的介电各向异性,降低驱动电压。In the present invention, the addition of the compound represented by Formula IV can increase the dielectric anisotropy of the liquid crystal composition and reduce the driving voltage.

本发明中,所述C1~C10的直链或支链烷基可以是甲基、乙基、正丙基、异丙基、正丁基、异丁基、仲丁基、特丁基、正戊基、异戊基、正己基、3-己基、正庚基、2-庚基、正辛基、2-辛基、正壬基或正癸基等;所述C1~C10的烷氧基的概念与C1~C10的直链或支链烷基的概念相似,即C1~C10的直链或支链烷基通过氧原子与化合物主体相连;C1~C10的直链或支链亚烷基的概念与C1~C10的直链或支链烷基的概念相似,即C1~C10的直链或支链烷基上有另一个自由端与其他基团相连。In the present invention, the C1-C10 straight-chain or branched-chain alkyl group may be methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, n-hexyl, 3-hexyl, n-heptyl, 2-heptyl, n-octyl, 2-octyl, n-nonyl or n-decyl, etc.; the concept of the C1-C10 alkoxy group is similar to the concept of the C1-C10 straight-chain or branched-chain alkyl group, that is, the C1-C10 straight-chain or branched-chain alkyl group is connected to the main body of the compound through an oxygen atom; the concept of the C1-C10 straight-chain or branched-chain alkylene group is similar to the concept of the C1-C10 straight-chain or branched-chain alkyl group, that is, the C1-C10 straight-chain or branched-chain alkyl group has another free end connected to other groups.

本发明中,C1~C5的卤代烷基为C1~C5的直链或支链烷基上有至少一个氢原子被卤原子所取代;C1~C5的卤代烷氧为C1~C5的直链或支链烷氧基上有至少一个氢原子被卤原子所取代;C2~C5的卤代烯基为C2~C5的烯基上有至少一个氢原子被卤原子所取代;C2~C5的卤代烯氧基为C2~C5的烯氧基上有至少一个氢原子被卤原子所取代。其中,C1~C5的直链或支链烷基以及C1~C5的直链或支链烷氧基的概念与上述C1~C10的直链或支链烷基的概念相同,在此不再赘述。C2~C5的卤代烯基以及C2~C5的卤代烯氧基为C1~C5的直链或支链烷基以及C1~C5的直链或支链烷氧基中的α碳和β碳通过碳碳双键相连。In the present invention, C1-C5 haloalkyl means C1-C5 straight or branched alkyl with at least one hydrogen atom replaced by a halogen atom; C1-C5 haloalkoxy means C1-C5 straight or branched alkoxy with at least one hydrogen atom replaced by a halogen atom; C2-C5 haloalkenyl means C2-C5 alkenyl with at least one hydrogen atom replaced by a halogen atom; C2-C5 haloalkenyloxy means C2-C5 alkenyloxy with at least one hydrogen atom replaced by a halogen atom. Among them, the concepts of C1-C5 straight or branched alkyl and C1-C5 straight or branched alkoxy are the same as those of C1-C10 straight or branched alkyl, which are not described here. C2-C5 haloalkenyl and C2-C5 haloalkenyloxy means C1-C5 straight or branched alkyl and C1-C5 straight or branched alkoxy with α carbon and β carbon connected by a carbon-carbon double bond.

本发明目的之二在于提供一种宽温聚合物分散液晶组合物,所述宽温聚合物分散液晶组合物含有上述的宽温液晶组合物15~70wt%以及高分子UV聚合物30~85wt%。The second object of the present invention is to provide a wide temperature range polymer dispersed liquid crystal composition, which contains 15-70 wt % of the above wide temperature range liquid crystal composition and 30-85 wt % of a high molecular weight UV polymer.

其中,宽温液晶组合的质量分数可以是15wt%、20wt%、25wt%、30wt%、35wt%、40wt%、45wt%、50wt%、55wt%、60wt%、65wt%或70wt%等,高分子UV聚合物的质量分数可以是30wt%、35wt%、40wt%、45wt%、50wt%、55wt%、60wt%、65wt%、70wt%、75wt%、80wt%或85wt%等,但并不仅限于所列举的数值,上述各数值范围内其他未列举的数值同样适用。Among them, the mass fraction of the wide temperature liquid crystal combination can be 15wt%, 20wt%, 25wt%, 30wt%, 35wt%, 40wt%, 45wt%, 50wt%, 55wt%, 60wt%, 65wt% or 70wt%, etc., and the mass fraction of the high molecular UV polymer can be 30wt%, 35wt%, 40wt%, 45wt%, 50wt%, 55wt%, 60wt%, 65wt%, 70wt%, 75wt%, 80wt% or 85wt%, etc., but are not limited to the listed values, and other values not listed within the above numerical ranges are equally applicable.

优选地,本发明采用UV聚合的方式进行聚合,所述宽温聚合物分散液晶组合物含有宽温液晶组合物40~60wt%以及高分子UV聚合物40~60wt%。Preferably, the present invention adopts UV polymerization to perform polymerization, and the wide temperature polymer dispersed liquid crystal composition contains 40-60 wt % of the wide temperature liquid crystal composition and 40-60 wt % of the high molecular UV polymer.

作为本发明优选的技术方案,所述高分子UV聚合物含有20~80wt%预聚物、20~80wt%活性稀释剂以及1~6wt%光引发剂,其中预聚物的质量分数可以是20wt%、30wt%、40wt%、50wt%、60wt%、70wt%或80wt%等,活性稀释剂的质量分数可以是20wt%、30wt%、40wt%、50wt%、60wt%、70wt%或80wt%等,光引发剂的质量分数可以是1wt%、2wt%、3wt%、4wt%、5wt%或6wt%等,但并不仅限于所列举的数值,上述各数值范围内其他未列举的数值同样适用。As a preferred technical solution of the present invention, the high molecular UV polymer contains 20-80wt% prepolymer, 20-80wt% active diluent and 1-6wt% photoinitiator, wherein the mass fraction of the prepolymer can be 20wt%, 30wt%, 40wt%, 50wt%, 60wt%, 70wt% or 80wt%, etc., the mass fraction of the active diluent can be 20wt%, 30wt%, 40wt%, 50wt%, 60wt%, 70wt% or 80wt%, etc., the mass fraction of the photoinitiator can be 1wt%, 2wt%, 3wt%, 4wt%, 5wt% or 6wt%, etc., but is not limited to the listed values, and other values not listed within the above numerical ranges are equally applicable.

优选地,所述预聚物包括聚氨酯丙烯酸酯、环氧丙烯酸酯、丙烯酸预聚物、聚酯丙烯酸酯、聚醚丙烯酸酯、聚丁二烯丙烯酸酯或聚酰胺中的任意一种或至少两种的组合,所述组合典型但非限制性实例有:聚氨酯丙烯酸酯和环氧丙烯酸酯的组合、环氧丙烯酸酯和丙烯酸预聚物的组合、丙烯酸预聚物和聚酯丙烯酸酯的组合、聚酯丙烯酸酯和聚醚丙烯酸酯的组合、聚醚丙烯酸酯和聚丁二烯丙烯酸酯的组合、聚丁二烯丙烯酸酯和聚酰胺的组合或聚氨酯丙烯酸酯、环氧丙烯酸酯和丙烯酸预聚物的组合等。Preferably, the prepolymer comprises any one of polyurethane acrylate, epoxy acrylate, acrylic prepolymer, polyester acrylate, polyether acrylate, polybutadiene acrylate or polyamide, or a combination of at least two thereof. Typical but non-limiting examples of the combination include: a combination of polyurethane acrylate and epoxy acrylate, a combination of epoxy acrylate and acrylic prepolymer, a combination of acrylic prepolymer and polyester acrylate, a combination of polyester acrylate and polyether acrylate, a combination of polyether acrylate and polybutadiene acrylate, a combination of polybutadiene acrylate and polyamide, or a combination of polyurethane acrylate, epoxy acrylate and acrylic prepolymer, etc.

优选地,所述活性稀释剂为甲基丙烯酸羟乙酯、4-羟基丁基丙烯酸酯、甲基丙烯酸2-羟基丙酯、甲基丙烯酸乙酯、甲基丙烯酸正辛酯、2-丙烯酸十二烷基酯、1,6-己二醇二丙烯酸酯、三羟甲基丙烷三丙烯酸酯、丙烯酸异冰片酯、甲基丙烯酸异冰片酯、羟基双环戊烯或N-丙烯酰吗啉中的任意一种或至少两种的组合,所述组合典型但非限制性实例有:甲基丙烯酸羟乙酯和4-羟基丁基丙烯酸酯的组合、4-羟基丁基丙烯酸酯和甲基丙烯酸2-羟基丙酯的组合、甲基丙烯酸2-羟基丙酯和甲基丙烯酸乙酯的组合、甲基丙烯酸正辛酯和2-丙烯酸十二烷基酯的组合、2-丙烯酸十二烷基酯和1,6-己二醇二丙烯酸酯的组合、三羟甲基丙烷三丙烯酸酯和丙烯酸异冰片酯的组合、甲基丙烯酸异冰片酯和羟基双环戊烯的组合、羟基双环戊烯和N-丙烯酰吗啉的组合、甲基丙烯酸羟乙酯、4-羟基丁基丙烯酸酯和甲基丙烯酸2-羟基丙酯的组合等。Preferably, the reactive diluent is any one of hydroxyethyl methacrylate, 4-hydroxybutyl acrylate, 2-hydroxypropyl methacrylate, ethyl methacrylate, n-octyl methacrylate, 2-dodecyl acrylate, 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, isobornyl acrylate, isobornyl methacrylate, hydroxydicyclopentene or N-acryloylmorpholine, or a combination of at least two thereof. Typical but non-limiting examples of the combination include: a combination of hydroxyethyl methacrylate and 4-hydroxybutyl acrylate, 4-hydroxybutyl acrylate, 2-hydroxypropyl methacrylate, ethyl methacrylate, n-octyl methacrylate, 2-dodecyl acrylate, 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, isobornyl acrylate, isobornyl methacrylate, hydroxydicyclopentene or N-acryloylmorpholine. A combination of acrylate and 2-hydroxypropyl methacrylate, a combination of 2-hydroxypropyl methacrylate and ethyl methacrylate, a combination of n-octyl methacrylate and 2-dodecyl acrylate, a combination of 2-dodecyl acrylate and 1,6-hexanediol diacrylate, a combination of trimethylolpropane triacrylate and isobornyl acrylate, a combination of isobornyl methacrylate and hydroxydicyclopentene, a combination of hydroxydicyclopentene and N-acryloylmorpholine, a combination of hydroxyethyl methacrylate, 4-hydroxybutyl acrylate and 2-hydroxypropyl methacrylate, and the like.

优选地,所述光引发剂为1-羟基环己基苯基甲酮、(2,4,6-三甲基苯甲酰基)-二苯基氧化膦、2-甲基-1-(4-甲硫基苯基)-2-吗啉-1-丙酮或2-异丙基硫杂蒽酮中的任意一种或至少两种的组合,所述组合典型但非限制性实例有:1-羟基环己基苯基甲酮和(2,4,6-三甲基苯甲酰基)-二苯基氧化膦的组合、(2,4,6-三甲基苯甲酰基)-二苯基氧化膦和2-甲基-1-(4-甲硫基苯基)-2-吗啉-1-丙酮的组合、2-甲基-1-(4-甲硫基苯基)-2-吗啉-1-丙酮和2-异丙基硫杂蒽酮的组合、1-羟基环己基苯基甲酮和2-异丙基硫杂蒽酮的组合或1-羟基环己基苯基甲酮、(2,4,6-三甲基苯甲酰基)-二苯基氧化膦和2-甲基-1-(4-甲硫基苯基)-2-吗啉-1-丙酮的组合等。Preferably, the photoinitiator is any one of 1-hydroxycyclohexyl phenyl ketone, (2,4,6-trimethylbenzoyl)-diphenylphosphine oxide, 2-methyl-1-(4-methylthiophenyl)-2-morpholine-1-propanone or 2-isopropylthioxanthone, or a combination of at least two thereof. Typical but non-limiting examples of the combination include: a combination of 1-hydroxycyclohexyl phenyl ketone and (2,4,6-trimethylbenzoyl)-diphenylphosphine oxide, (2,4,6-trimethylbenzoyl)-diphenylphosphine oxide, A combination of phenylphosphine oxide and 2-methyl-1-(4-methylthiophenyl)-2-morpholine-1-propanone, a combination of 2-methyl-1-(4-methylthiophenyl)-2-morpholine-1-propanone and 2-isopropylthioxanthone, a combination of 1-hydroxycyclohexylphenyl ketone and 2-isopropylthioxanthone, or a combination of 1-hydroxycyclohexylphenyl ketone, (2,4,6-trimethylbenzoyl)-diphenylphosphine oxide and 2-methyl-1-(4-methylthiophenyl)-2-morpholine-1-propanone, etc.

作为本发明优选的技术方案,所述宽温聚合物分散液晶组合物含有染料0.1~5wt%,如0.1wt%、0.2wt%、0.5wt%、1wt%、1.5wt%、2wt%、2.5wt%、3wt%、3.5wt%、4wt%、4.5wt%和5wt%等,但并不仅限于所列举的数值,该数值范围内其他未列举的数值同样适用。As a preferred technical solution of the present invention, the wide temperature polymer dispersed liquid crystal composition contains 0.1 to 5wt% of the dye, such as 0.1wt%, 0.2wt%, 0.5wt%, 1wt%, 1.5wt%, 2wt%, 2.5wt%, 3wt%, 3.5wt%, 4wt%, 4.5wt% and 5wt%, etc., but is not limited to the listed values, and other unlisted values within the numerical range are also applicable.

本发明目的之三在于提供一种宽温聚合物分散液晶薄膜,所述液晶薄膜包括两层导电膜,以及位于导电膜之间的液晶层,所述液晶层包括权利要求6-8任一项所述的宽温聚合物分散液晶组合物以及间隔粒子。The third object of the present invention is to provide a wide temperature range polymer dispersed liquid crystal film, the liquid crystal film comprising two conductive films and a liquid crystal layer located between the conductive films, the liquid crystal layer comprising the wide temperature range polymer dispersed liquid crystal composition described in any one of claims 6-8 and spacer particles.

作为本发明优选的技术方案,所述导电膜为PET-ITO导电膜。As a preferred technical solution of the present invention, the conductive film is a PET-ITO conductive film.

优选地,所述导电膜的厚度为0.060mm~0.180mm,0.060mm、0.070mm、0.080mm、0.100mm、0.120mm、0.150mm或0.180mm中的任意一种或至少两种的组合。但并不仅限于所列举的数值,该数值范围内其他未列举的数值同样适用。Preferably, the thickness of the conductive film is 0.060 mm to 0.180 mm, any one of 0.060 mm, 0.070 mm, 0.080 mm, 0.100 mm, 0.120 mm, 0.150 mm or 0.180 mm, or a combination of at least two thereof, but not limited to the listed values, and other values not listed within the range are also applicable.

优选地,所述宽温聚合物分散液晶组合物与间隔粒子的质量比为1:0.0002~0.005,如1:0.0002、1:0.0005、1:0.001、1:0.002、1:0.003、1:0.004或1:0.005等,但并不仅限于所列举的数值,该数值范围内其他未列举的数值同样适用。Preferably, the mass ratio of the wide temperature polymer dispersed liquid crystal composition to the spacer particles is 1:0.0002-0.005, such as 1:0.0002, 1:0.0005, 1:0.001, 1:0.002, 1:0.003, 1:0.004 or 1:0.005, etc., but is not limited to the listed values, and other unlisted values within the numerical range are also applicable.

优选地,所述间隔粒子的粒径为10-30μm,如10μm、12μm、15μm、18μm、20μm、22μm、25μm、28μm或30μm等,但并不仅限于所列举的数值,该数值范围内其他未列举的数值同样适用,优选为10~20μm。Preferably, the particle size of the spacer particles is 10-30μm, such as 10μm, 12μm, 15μm, 18μm, 20μm, 22μm, 25μm, 28μm or 30μm, but is not limited to the listed values. Other unlisted values within the numerical range are also applicable, preferably 10 to 20μm.

优选地,所述液晶层的厚度为10~20μm,如10μm、11μm、12μm、13μm、14μm、15μm、16μm、17μm、18μm、19μm或20μm等,但并不仅限于所列举的数值,该数值范围内其他未列举的数值同样适用。Preferably, the thickness of the liquid crystal layer is 10 to 20 μm, such as 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm, 18 μm, 19 μm or 20 μm, but is not limited to the listed values, and other unlisted values within the numerical range are also applicable.

本发明中,各液晶分子中的代码的具体含义如表1所示。In the present invention, the specific meanings of the codes in each liquid crystal molecule are shown in Table 1.

表1Table 1

与现有技术相比,本发明至少具有以下有益效果:Compared with the prior art, the present invention has at least the following beneficial effects:

(1)本发明目提供一种宽温液晶组合物,具有高的清亮点(Cp≥100℃)、大的折射率各向异性(△n≥0.18)、较大的介电各向异性;同时这种宽温液晶组合物在聚合物中具有很好的溶解性;(1) The present invention provides a wide temperature liquid crystal composition having a high clearing point (Cp ≥ 100°C), a large refractive index anisotropy (Δn ≥ 0.18), and a large dielectric anisotropy; and the wide temperature liquid crystal composition has good solubility in polymers;

(2)本发明提供一种宽温聚合物分散液晶组合物,具有均一相温度低,聚合速度快,粘度适中等特点;(2) The present invention provides a wide temperature range polymer dispersed liquid crystal composition having the characteristics of low homogeneous phase temperature, fast polymerization speed, moderate viscosity, etc.;

(3)本发明提供一种宽温聚合物分散液晶薄膜,具有驱动电压低、响应快、光学性能良好、可靠性高、使用温度范围宽、耐候性好等优点,解决了现有技术中PDLC产品可靠性差,工作温度范围窄的问题。(3) The present invention provides a wide temperature range polymer dispersed liquid crystal film, which has the advantages of low driving voltage, fast response, good optical performance, high reliability, wide operating temperature range, and good weather resistance, thereby solving the problems of poor reliability and narrow operating temperature range of PDLC products in the prior art.

具体实施方式DETAILED DESCRIPTION

为便于理解本发明,本发明列举实施例如下。本领域技术人员应该明了,所述实施例仅仅是帮助理解本发明,不应视为对本发明的具体限制。For the convenience of understanding the present invention, the present invention lists the following embodiments. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

以如下结构式的化合物为例对其结构代码进行说明:Take the following compound as an example to explain its structure code:

该结构式如果用表1所示代码表示,则可以表达为nCPPm,代码中n表示左端烷基的碳原子数,例如n为3,即表示该烷基为-C3H7,代码中C表示环己烷基,P表示苯基,m表示右端烷基的碳原子数,例如m为2,即表示该烷基为-C2H5 If the structural formula is represented by the codes shown in Table 1, it can be expressed as nCPPm, where n represents the number of carbon atoms of the left-end alkyl group, for example, n is 3, which means that the alkyl group is -C 3 H 7 , where C represents cyclohexyl, P represents phenyl, and m represents the number of carbon atoms of the right-end alkyl group, for example, m is 2, which means that the alkyl group is -C 2 H 5 .

在以下实施例中,性能测试项目的简写代号如表2所示。In the following examples, the abbreviated codes for the performance test items are shown in Table 2.

表2性能测试项目简写代号Table 2 Abbreviation codes for performance test items

测试项目代号Test project code 含义meaning Δn:Δn: 光学各向异性(589nm,25℃)Optical anisotropy (589nm, 25℃) Δε:Δε: 介电各向异性(1KHz,25℃)Dielectric anisotropy (1KHz, 25℃) Cp:Cp: 清亮点(向列-各向同性相转变温度,℃)Clearing point (nematic-isotropic phase transition temperature, °C) LTSLTS 低温稳定性Low temperature stability

在本以下实施例的液晶组合物中所采用的各成分,均可以通过公知的方法进行合成或者可以通过商业途径获得,所得液晶组合物的各成分经测试符合电子类化合物标准。Each component used in the liquid crystal composition of the following embodiments can be synthesized by a known method or obtained through commercial channels. The components of the obtained liquid crystal composition are tested to meet the standards of electronic compounds.

以下实施例中的液晶组合物按照各组分配比(各实施例中组分末尾的括号中为所述组分的归属通式),并通过常规制备方法如采用加热、超声波、悬浮等方式混合得到液晶组合物。The liquid crystal compositions in the following examples are prepared according to the proportions of the components (the brackets at the end of the components in each example are the general formulas of the components) and are mixed by conventional preparation methods such as heating, ultrasound, suspension, etc. to obtain the liquid crystal compositions.

本发明具体实施例中使用的宽温液晶组合物的组成如表3-5所示。The compositions of the wide temperature liquid crystal compositions used in the specific embodiments of the present invention are shown in Tables 3-5.

表3Table 3

表4Table 4

液晶BLiquid crystal B 质量分数/%Mass fraction/% 3CCEPC33CCEPC3 22 CpCp 117117 5CCEPC55CCEPC5 22 △n△n 0.1840.184 2CEPPN2CEPPN 44 △ε∆ε 13.013.0 3CEPPN3CEPPN 44 LTSLTS -40℃-40℃ 3CCEGN3CCEGN 44 3CPPN3CPPN 33 3CGN3CGN 77 5CPGN5CPGN 55 3CCUF3CCUF 66 5CCUF5CCUF 77 3CCPUF3CCPUF 33 2CCPUF2CCPUF 22 4CCPUF4CCPUF 33 2PPN2PPN 33 3PPN3PPN 55 4PPN4PPN 44 5PPN5PPN 88 2OPPN2OPPN 44 3OPPN3OPPN 66 5OPPN5OPPN 66 NPGP3NPGP3 1212

表5Table 5

本发明具体实施例中高分子UV聚合物的组成如表6和表7所示。The compositions of the high molecular weight UV polymers in the specific embodiments of the present invention are shown in Tables 6 and 7.

表6Table 6

表7Table 7

表6以及表7中MM8209、MM8610、MPB110是由上海飞凯光电材料股份有限公司生产的预聚物。MM8209, MM8610 and MPB110 in Table 6 and Table 7 are prepolymers produced by Shanghai Feikai Optoelectronic Materials Co., Ltd.

实施例1Example 1

材料Material 型号model 质量份Mass 液晶材料Liquid crystal materials 液晶ALiquid crystal A 5555 聚合物polymer 高分子UV聚合物1High molecular weight UV polymer 1 4545 间隔粒子Spacer particles 20μm20μm 0.50.5

实施例2Example 2

材料Material 型号model 质量份Mass 液晶材料Liquid crystal materials 液晶ALiquid crystal A 5050 聚合物polymer 高分子UV聚合物2High molecular weight UV polymer 2 5050 间隔粒子Spacer particles 20μm20μm 0.50.5

实施例3Example 3

材料Material 型号model 质量份Mass 液晶材料Liquid crystal materials 液晶BLiquid crystal B 5555 聚合物polymer 高分子UV聚合物1High molecular weight UV polymer 1 4545 间隔粒子Spacer particles 20μm20μm 0.50.5

实施例4Example 4

材料Material 型号model 质量份Mass 液晶材料Liquid crystal materials 液晶BLiquid crystal B 5555 聚合物polymer 高分子UV聚合物2High molecular weight UV polymer 2 4545 间隔粒子Spacer particles 20μm20μm 0.50.5

实施例5Example 5

材料Material 型号model 质量份Mass 液晶材料Liquid crystal materials 液晶CLiquid crystal C 6060 聚合物polymer 高分子UV聚合物1High molecular weight UV polymer 1 4040 间隔粒子Spacer particles 20μm20μm 0.50.5

实施例6Example 6

材料Material 型号model 质量份Mass 液晶材料Liquid crystal materials 液晶CLiquid crystal C 6060 聚合物polymer 高分子UV聚合物2High molecular weight UV polymer 2 4040 间隔粒子Spacer particles 20μm20μm 0.50.5

以上实施例1-6按表中质量比称量常温搅拌30min,使其充分搅拌均匀,将混合好的混合物均匀涂布与两片ITO-PET之间,以365nm的紫外光、5mW/cm2光强,在25-35℃的环境下照射5min,得到220mm×180mm聚合物分散液晶薄膜。The above Examples 1-6 were weighed according to the mass ratio in the table and stirred at room temperature for 30 minutes to make them fully stirred. The mixed mixture was evenly coated between two pieces of ITO-PET and irradiated with 365nm ultraviolet light and 5mW/ cm2 light intensity at 25-35℃ for 5 minutes to obtain a 220mm×180mm polymer dispersed liquid crystal film.

实施例1-6光电性能测试采用上海申光仪器仪表有限生产的WGT-S透光率/雾度测试仪。其中关态光学数据为PDLC施加0V下测得,开态光学数据为PDLC施加对应的驱动电压下测得。测试结果如表8和表9所示。The photoelectric performance test of Examples 1-6 was conducted using a WGT-S light transmittance/haze tester produced by Shanghai Shenguang Instrument Co., Ltd. The off-state optical data was measured when PDLC was applied with 0V, and the on-state optical data was measured when PDLC was applied with a corresponding driving voltage. The test results are shown in Tables 8 and 9.

表8Table 8

表9Table 9

通过以上测试数据可以看出,根据实施例1-6制作的PDLC薄膜关态雾度大,遮蔽性好,开态雾度小,透明性好,驱动电压低。在80℃高温环境下,雾度变化小,遮蔽性能较好,可满足车载、室外等高温环境下的使用需求。同时在高温老化、日照老化后光学性能变化很小,有良好的耐候性。It can be seen from the above test data that the PDLC film prepared according to Examples 1-6 has large off-state haze, good shielding properties, small on-state haze, good transparency, and low driving voltage. In a high temperature environment of 80°C, the haze changes little, the shielding performance is good, and it can meet the use requirements in high temperature environments such as vehicles and outdoors. At the same time, the optical properties change little after high temperature aging and sunlight aging, and have good weather resistance.

申请人声明,本发明通过上述实施例来说明本发明的详细工艺设备和工艺流程,但本发明并不局限于上述详细工艺设备和工艺流程,即不意味着本发明必须依赖上述详细工艺设备和工艺流程才能实施。所属技术领域的技术人员应该明了,对本发明的任何改进,对本发明产品各原料的等效替换及辅助成分的添加、具体方式的选择等,均落在本发明的保护范围和公开范围之内。The applicant declares that the present invention illustrates the detailed process equipment and process flow of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned detailed process equipment and process flow, that is, it does not mean that the present invention must rely on the above-mentioned detailed process equipment and process flow to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims (17)

1.一种宽温聚合物分散液晶组合物,其特征在于,所述宽温聚合物分散液晶组合物含有宽温液晶组合物50~60wt%以及高分子UV聚合物40~50wt%,所述宽温液晶组合物包括组份A和组份B,所述组份A包括式I-1和I-2所示的化合物,组份B包括式II-2或II-3中的任意一种化合物或至少两种化合物的组合,所述组分B包括至少一种式II-2所示的化合物;1. A wide-temperature polymer-dispersed liquid crystal composition, characterized in that the wide-temperature polymer-dispersed liquid crystal composition contains 50 to 60 wt% of the wide-temperature liquid crystal composition and 40 to 50 wt% of a high-molecular UV polymer, and the The wide-temperature liquid crystal composition includes component A and component B, where component A includes compounds represented by formulas I-1 and I-2, and component B includes any one of formulas II-2 or II-3. Compound or a combination of at least two compounds, the component B includes at least one compound represented by formula II-2; 所述式I-1所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula I-1 is selected from any one or a combination of at least two of the following compounds: 所述式I-1所示化合物包含至少一种式I-1-4-2的化合物The compound represented by formula I-1 includes at least one compound of formula I-1-4-2 所述式I-2所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by the formula I-2 is selected from any one or a combination of at least two of the following compounds: 所述式I-2所示化合物包含至少一种式I-2-4的化合物以及至少一种式I-2-6的化合物;The compound represented by the formula I-2 includes at least one compound of the formula I-2-4 and at least one compound of the formula I-2-6; 其中,R1、R2、R5和R7分别独立地为C1~C10链状烷基或烷氧基,环E、环F、环G、环H和环I分别独立地为1,4-亚环己基、1,4-亚苯基、1,4-亚环己基中至少一个-CH2-被-O-替代的基团或1,4-亚环己基中至少一个碳碳单键被碳碳双键替代的基团或1,4-亚苯基中至少一个-H被-CN、-F或-Cl取代的基团或1,4-亚苯基中至少一个-CH=被-N=替代的基团,Z5或Z6分别独立地为单键或-COO-,X1~X4以及Y3~Y6分别独立地为-H或-F,X5和X6分别独立地为-H或-F,且X5与X6中至多一个为-F,R6和R8分别独立地为-F;Among them, R 1 , R 2 , R 5 and R 7 are each independently a C1 to C10 chain alkyl group or alkoxy group, and ring E, ring F, ring G, ring H and ring I are each independently 1,4. -At least one -CH 2 in cyclohexylene, 1,4-phenylene, 1,4-cyclohexylene -a group substituted by -O- or at least one carbon-carbon single bond in 1,4-cyclohexylene A group substituted by a carbon-carbon double bond or a group in which at least one -H of the 1,4-phenylene group is substituted by -CN, -F or -Cl, or a group in which at least one -CH of the 1,4-phenylene group is substituted by -N=substituted group, Z 5 or Z 6 are independently a single bond or -COO-, X 1 to X 4 and Y 3 to Y 6 are independently -H or -F, X 5 and X 6 are each independently -H or -F, and at most one of X 5 and X 6 is -F, and R 6 and R 8 are each independently -F; R1'为C1~C10链状烷基;R 1 ' is C1~C10 chain alkyl group; 所述组合物包括60~85wt%的组份A以及15~40wt%的组份B;The composition includes 60 to 85 wt% of component A and 15 to 40 wt% of component B; 所述宽温液晶组合物清亮点大于等于100℃,折射率各向异性大于等于0.18。The clearing point of the wide-temperature liquid crystal composition is greater than or equal to 100°C, and the refractive index anisotropy is greater than or equal to 0.18. 2.根据权利要求1所述的宽温聚合物分散液晶组合物,其特征在于,所述式I-1-1所示化合物选自如下化合物中的任意一种或至少两种的组合:2. The wide-temperature polymer dispersion liquid crystal composition according to claim 1, characterized in that the compound represented by the formula I-1-1 is selected from any one or a combination of at least two of the following compounds: 所述式I-1-4所示化合物还选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula I-1-4 is also selected from any one or a combination of at least two of the following compounds: 3.根据权利要求1所述的宽温聚合物分散液晶组合物,其特征在于,所述式I-2-2所示化合物选自如下化合物中的任意一种或至少两种的组合:3. The wide-temperature polymer dispersion liquid crystal composition according to claim 1, characterized in that the compound represented by the formula I-2-2 is selected from any one or a combination of at least two of the following compounds: 所述式I-2-3所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula I-2-3 is selected from any one or a combination of at least two of the following compounds: 所述式I-2-4所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula I-2-4 is selected from any one or a combination of at least two of the following compounds: 所述式I-2-6所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula I-2-6 is selected from any one or a combination of at least two of the following compounds: 所述式I-2-7所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula I-2-7 is selected from any one or a combination of at least two of the following compounds: 4.根据权利要求1所述的宽温聚合物分散液晶组合物,其特征在于,所述式II-2所示化合物选自如下化合物中的任意一种或至少两种的组合:4. The wide temperature polymer dispersion liquid crystal composition according to claim 1, characterized in that the compound represented by formula II-2 is selected from any one or a combination of at least two of the following compounds: 其中,Y7为-H或-F。Among them, Y 7 is -H or -F. 5.根据权利要求4所述的宽温聚合物分散液晶组合物,其特征在于,所述式II-2-1所示化合物选自如下化合物中的任意一种或至少两种的组合:5. The wide-temperature polymer dispersion liquid crystal composition according to claim 4, characterized in that the compound represented by formula II-2-1 is selected from any one or a combination of at least two of the following compounds: 所述式II-2-2所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by the formula II-2-2 is selected from any one or a combination of at least two of the following compounds: 所述式II-2-3所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula II-2-3 is selected from any one or a combination of at least two of the following compounds: 所述式II-2-4所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula II-2-4 is selected from any one or a combination of at least two of the following compounds: 所述式II-2-5所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula II-2-5 is selected from any one or a combination of at least two of the following compounds: 所述式II-2-6所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula II-2-6 is selected from any one or a combination of at least two of the following compounds: 所述式II-2-7所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula II-2-7 is selected from any one or a combination of at least two of the following compounds: 6.根据权利要求1所述的宽温聚合物分散液晶组合物,其特征在于,所述式II-3所示化合物选自如下化合物中的任意一种或至少两种的组合:6. The wide temperature polymer dispersion liquid crystal composition according to claim 1, characterized in that the compound represented by formula II-3 is selected from any one or a combination of at least two of the following compounds: 所述Y8~Y10分别独立地为-H或-F。The Y 8 to Y 10 are each independently -H or -F. 7.根据权利要求6所述的宽温聚合物分散液晶组合物,其特征在于,所述式II-3-1所示化合物选自如下化合物中的任意一种或至少两种的组合:7. The wide temperature polymer dispersion liquid crystal composition according to claim 6, characterized in that the compound represented by formula II-3-1 is selected from any one or a combination of at least two of the following compounds: 所述式II-3-2所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula II-3-2 is selected from any one or a combination of at least two of the following compounds: 所述式II-3-3所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula II-3-3 is selected from any one or a combination of at least two of the following compounds: 所述式II-3-4所示化合物选自如下化合物中的任意一种或至少两种的组合:The compound represented by formula II-3-4 is selected from any one or a combination of at least two of the following compounds: 8.根据权利要求1所述的宽温聚合物分散液晶组合物,其特征在于,所述宽温液晶组合物包括式III所示的化合物:8. The wide-temperature polymer-dispersed liquid crystal composition according to claim 1, characterized in that the wide-temperature liquid crystal composition includes a compound represented by Formula III: 其中,R9和R10分别独立地为C1-C10的链状烷基或烷氧基,环J和环K分别独立地为1,4-亚环己基或1,4-亚苯基,Y11和Y12分别独立地为-H或-F,a为0或1,若a为1,则J和K不同时为1,4-亚苯基。Among them, R 9 and R 10 are independently C1-C10 chain alkyl or alkoxy, ring J and ring K are independently 1,4-cyclohexylene or 1,4-phenylene, Y 11 and Y 12 are independently -H or -F, and a is 0 or 1. If a is 1, then J and K are not 1,4-phenylene at the same time. 9.根据权利要求8所述的宽温聚合物分散液晶组合物,其特征在于,所述式III所示的化合物选自如下化合物中的任意一种或至少两种的组合:9. The wide-temperature polymer dispersion liquid crystal composition according to claim 8, characterized in that the compound represented by formula III is selected from any one or a combination of at least two of the following compounds: 10.根据权利要求8所述的宽温聚合物分散液晶组合物,其特征在于,所述宽温液晶组合物中式III所示的化合物质量分数为0~20wt%。10. The wide-temperature polymer-dispersed liquid crystal composition according to claim 8, wherein the mass fraction of the compound represented by Formula III in the wide-temperature liquid crystal composition is 0 to 20 wt%. 11.根据权利要求1所述的宽温聚合物分散液晶组合物,其特征在于,所述宽温液晶组合物包括式IV所示的化合物,所述式IV所示的化合物选自如下化合物中的任意一种或至少两种的组合:11. The wide-temperature polymer dispersion liquid crystal composition according to claim 1, characterized in that the wide-temperature liquid crystal composition includes a compound represented by formula IV, and the compound represented by formula IV is selected from the following compounds Any one or a combination of at least two: 其中,in, R11为H、取代或未取代的C1~C10链状烷基、取代或未取代的C3~C5的环烷基或所述取代或未取代的C1~C10的链状烷基中的1个或不相邻的2个以上的-CH2-分别独立地被-CH=CH-、-C≡C-、-O-、-CO-、-CO-O-或-O-CO-替代的基团,所述取代基为-F或-Cl。R 11 is one of H, a substituted or unsubstituted C1 to C10 chain alkyl group, a substituted or unsubstituted C3 to C5 cycloalkyl group, or the substituted or unsubstituted C1 to C10 chain alkyl group. Or two or more non-adjacent -CH 2 - are independently replaced by -CH=CH-, -C≡C-, -O-, -CO-, -CO-O- or -O-CO- group, the substituent is -F or -Cl. 12.根据权利要求11所述的宽温聚合物分散液晶组合物,其特征在于,所述宽温液晶组合物中式IV所示的化合物质量分数为0~15wt%。12. The wide-temperature polymer-dispersed liquid crystal composition according to claim 11, wherein the mass fraction of the compound represented by formula IV in the wide-temperature liquid crystal composition is 0 to 15 wt%. 13.根据权利要求1所述的宽温聚合物分散液晶组合物,其特征在于,所述高分子UV聚合物含有20~80wt%预聚物、20~80wt%活性稀释剂以及1~6wt%光引发剂。13. The wide-temperature polymer dispersion liquid crystal composition according to claim 1, characterized in that the high molecular UV polymer contains 20-80wt% prepolymer, 20-80wt% reactive diluent and 1-6wt% Photoinitiator. 14.根据权利要求13所述的宽温聚合物分散液晶组合物,其特征在于,所述预聚物包括聚氨酯丙烯酸酯、环氧丙烯酸酯、丙烯酸预聚物、聚酯丙烯酸酯、聚醚丙烯酸酯、聚丁二烯丙烯酸酯或聚酰胺中的任意一种或至少两种的组合;14. The wide temperature polymer dispersion liquid crystal composition according to claim 13, wherein the prepolymer includes polyurethane acrylate, epoxy acrylate, acrylic acid prepolymer, polyester acrylate, polyether acrylate Any one or a combination of at least two of ester, polybutadiene acrylate or polyamide; 所述活性稀释剂为甲基丙烯酸羟乙酯、4-羟基丁基丙烯酸酯、甲基丙烯酸2-羟基丙酯、甲基丙烯酸乙酯、甲基丙烯酸正辛酯、2-丙烯酸十二烷基酯、1,6-己二醇二丙烯酸酯、三羟甲基丙烷三丙烯酸酯、丙烯酸异冰片酯、甲基丙烯酸异冰片酯、羟基双环戊烯或N-丙烯酰吗啉中的任意一种或至少两种的组合;The reactive diluent is hydroxyethyl methacrylate, 4-hydroxybutyl acrylate, 2-hydroxypropyl methacrylate, ethyl methacrylate, n-octyl methacrylate, and 2-dodecyl acrylate. Any one of ester, 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, isobornyl acrylate, isobornyl methacrylate, hydroxydicyclopentene or N-acryloylmorpholine or a combination of at least two; 所述光引发剂为1-羟基环己基苯基甲酮、(2,4,6-三甲基苯甲酰基)二苯基氧化膦、2-甲基-1-(4-甲硫基苯基)-2-吗啉-1-丙酮或2-异丙基硫杂蒽酮中的任意一种或至少两种的组合。The photoinitiator is 1-hydroxycyclohexyl phenyl ketone, (2,4,6-trimethylbenzoyl)diphenylphosphine oxide, 2-methyl-1-(4-methylthiobenzene) base)-2-morpholine-1-propanone or any one or a combination of at least two of 2-isopropylthiaxanthone. 15.根据权利要求14所述的宽温聚合物分散液晶组合物,其特征在于,所述宽温聚合物分散液晶组合物含有染料0.1~5wt%。15. The wide-temperature polymer-dispersed liquid crystal composition according to claim 14, wherein the wide-temperature polymer-dispersed liquid crystal composition contains 0.1 to 5 wt% of dye. 16.一种宽温聚合物分散液晶薄膜,其特征在于,所述液晶薄膜包括两层导电膜,以及位于导电膜之间的液晶层,所述液晶层包括权利要求1-15任一项所述的宽温聚合物分散液晶组合物以及间隔粒子。16. A wide-temperature polymer-dispersed liquid crystal film, characterized in that the liquid crystal film includes two conductive films and a liquid crystal layer located between the conductive films, and the liquid crystal layer includes the liquid crystal film according to any one of claims 1 to 15. The wide-temperature polymer-dispersed liquid crystal composition and spacer particles are provided. 17.根据权利要求16所述的液晶薄膜,其特征在于,所述导电膜为PET-ITO导电膜;17. The liquid crystal film according to claim 16, wherein the conductive film is a PET-ITO conductive film; 所述导电膜的厚度为0.060mm~0.180mm;The thickness of the conductive film is 0.060mm~0.180mm; 所述宽温聚合物分散液晶组合物与间隔粒子的质量比为1:0.0002~0.005;The mass ratio of the wide-temperature polymer-dispersed liquid crystal composition and spacer particles is 1:0.0002-0.005; 所述液晶层的厚度为10-20μm;The thickness of the liquid crystal layer is 10-20 μm; 所述间隔粒子的粒径为10-30μm。The particle size of the spacer particles is 10-30 μm.
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