CN116042234A - 一种宽温液晶组合物及其应用 - Google Patents

一种宽温液晶组合物及其应用 Download PDF

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CN116042234A
CN116042234A CN202310114059.2A CN202310114059A CN116042234A CN 116042234 A CN116042234 A CN 116042234A CN 202310114059 A CN202310114059 A CN 202310114059A CN 116042234 A CN116042234 A CN 116042234A
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吴立东
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Chongqing Hanlang Precision Technology Co ltd
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Abstract

本发明公开了一种宽温液晶组合物及其应用,所述宽温液晶组合物包括至少一种通式J所示化合物、至少一种通式K所示化合物、至少一种通式C所示化合物。本发明所述液晶组合物具有优异的宽温工作范围,由其制成的宽温调光器件在‑30℃下响应时间<10s;在100℃下雾态雾度>95%;60V下的雾度最低可至2.5%;而且可以通过调整染料的种类和配比,定制不同颜色、不同透过率的产品。由于染料和液晶的良好适配,染料浓度可添加至5%以上,在‑40℃下仍未有染料析出,雾态总透过率最低可至10%以下。本发明所述宽温调光器件可在透明态和雾态之间进行切换,起到光线调节的作用,可应用于投影、汽车天窗、建筑玻璃、显示器等领域。

Description

一种宽温液晶组合物及其应用
技术领域
本发明属于液晶材料技术领域,具体涉及一种宽温液晶组合物及其应用。
背景技术
PDLC是将液晶和聚合单体均匀混合,然后经过紫外曝光或者热聚合等发生相分离,从而形成连续的聚合物相和被包裹在聚合物中的液晶微滴。通过施加电场,可以改变液晶分子排列方向。当液晶微滴内液晶分子散乱排列时,呈现雾态;当液晶微滴内液晶分子沿一个方向整齐排列时,液晶的折射率no和聚合物的折射率np相匹配呈现透明态。
目前市场上的PDLC温度偏低,在高温(>80℃)下雾态遮蔽度差,在低温(-30℃)下响应时间过长,只能呈现白色,且雾态的总透过率偏高(>50%),如果应用在手机背板或者汽车天窗上会显得很突兀,不适合汽车天窗等需要高温宽,雾态下低透过率的场景应用。
发明内容
本申请的主要目的在于提供一种具有优异的宽温工作范围的液晶组合物及其制备方法和应用。
为了实现上述目的,本发明提供如下技术方案:
本发明的第一方面公开了一种宽温液晶组合物,包括至少一种通式J所示化合物、至少一种通式K所示化合物、至少一种通式C所示化合物:
通式J所示化合物的结构为:
Figure BDA0004077845480000011
通式J中,RJ1表示碳原子数为1至12的烷基、环戊基、环丁基或环丙基,该烷基中的一个或不相邻的2个及以上的-CH2-可以分别独立地被-CH=CH-、-O-、-CO-、-COO-或-OCO-取代;
RJ2表示H,F,CN,NCS或OCF3
环A、B和C各自彼此独立地表示1,4-亚环己基或1,4-亚苯基;
k表示0或1;
Z1表示CH=CH、O、CO、COO或OCO取代;
Xj1、Xj2、Xj3、Xj4各自彼此独立地表示H、F、CH3或CH2CH3
通式K所示化合物的结构为:
Figure BDA0004077845480000021
通式K中,RK1和RK2分别表示碳原子数为1至12的烷基、环戊基、环丁基或环丙基,该烷基中的一个或不相邻的2个及以上的-CH2-可以分别独立地被-CH=CH-、-O-、-CO-、-COO-或-OCO-取代;
环A、B、C和D各自彼此独立地表示1,4-亚环己基或1,4-亚苯基;
K表示0或1;
通式C所示化合物为通式C-1、通式C-2、通式C-3所示化合物中的至少一种:
通式C-1所示化合物的结构为:
Figure BDA0004077845480000022
通式C-2所示化合物的结构为:
Figure BDA0004077845480000023
通式C-3所示化合物的结构为:
Figure BDA0004077845480000031
通式C式中,R1,R2,R3,R4,R5和R6各自彼此独立地表示C1-C8的烷基,C1-C8的烷氧基,C1-C8的烷基或C1-C8的烷氧基中的一个或不相邻的2个及以上的-CH2-分别独立地被-CH=CH-、-O-、-S-、-CO-、-COO-或-OCO-取代,或,C1-C8的烷基或C1-C8的烷氧基中-CH2-上的一个或多个H原子被F取代;
Y1,Y2,Y3,Y4,Y5各自彼此独立地表示H、F、CH3或CH2CH3。
上述一种宽温液晶组合物,作为一种优选的实施方案,所述宽温液晶组合物所含通式J所示化合物的重量份为30-90份、通式K所示化合物的重量份为1-40份、通式C所示化合物的重量份为1-30份。
上述一种宽温液晶组合物,作为一种优选的实施方案,通式J所示化合物为通式J-1所示化合物至通式J-7所示化合物组中的化合物:
通式J-1所示化合物的结构为:
Figure BDA0004077845480000032
通式J-2所示化合物的结构为:
Figure BDA0004077845480000033
通式J-3所示化合物的结构为:
Figure BDA0004077845480000034
通式J-4所示化合物的结构为:
Figure BDA0004077845480000041
通式J-5所示化合物的结构为:
Figure BDA0004077845480000042
通式J-6所示化合物的结构为:
Figure BDA0004077845480000043
通式J-7所示化合物的结构为:
Figure BDA0004077845480000044
式中,Rb表示碳原子数为1至12的烷基、环戊基、环丁基或环丙基,该烷基中的一个或不相邻的2个及以上的-CH2-可以分别独立地被-CH=CH-、-O-、-CO-、-COO-或-OCO-取代;
Xj1、Xj2、Xj3、Xj4各自彼此独立地表示H、F、CH3或CH2CH3
上述一种宽温液晶组合物,作为一种优选的实施方案,通式K所示化合物为通式K-1所示化合物至通式K-6所示化合物组中的化合物:
通式K-1所示化合物的结构为:
Figure BDA0004077845480000051
通式K-2所示化合物的结构为:
Figure BDA0004077845480000052
通式K-3所示化合物的结构为:
Figure BDA0004077845480000053
通式K-4所示化合物的结构为:
Figure BDA0004077845480000054
通式K-5所示化合物的结构为:
Figure BDA0004077845480000055
通式K-6所示化合物的结构为:
Figure BDA0004077845480000056
式中:RK1和RK2分别表示碳原子数为1至12的烷基、环戊基、环丁基或环丙基,该烷基中的一个或不相邻的2个及以上的-CH2-可以分别独立地被-CH=CH-、-O-、-CO-、-COO-或-OCO-取代,
优选地,RK1为碳原子数为1至5的烷基,
优选地,RK2为碳原子数为1至5的烷基、碳原子数为2至5的烷氧基或碳原子数为2至5的烯基。
所述宽温液晶组合物,将所述通式J、通式K、通式C组分混入搅拌釜中,在60℃~Tni+10℃温度下搅拌30min~2h,即可得到所述宽温液晶组合物。
本发明所述液晶组合物的向列相至各向同性相转变温度(Tni)为90℃至150℃;本发明所述液晶组合物在25℃时的折射率各向异性(△n)为0.15至0.30;本发明所述液晶组合物在25℃时的介电常数各向异性(△ε)为2至20。
本申请的第二方面,公开了一种PDLC液晶组合物,包括权利要求1-4任一项所述液晶组合物50-80重量份、齐聚体5-30份、可聚合单体20-50重量份、引发剂0.1-5重量份、染料0.1-10重量份、稳定剂0.01-0.5重量份、隔离物0.1-2重量份。
上述一种PDLC液晶组合物,作为一种优选的实施方案,所述齐聚体为为环氧丙烯酸酯齐聚体、聚氨酯丙烯酸酯齐聚体、聚酯丙烯酸酯齐聚体、聚醚丙烯酸酯齐聚体、不饱和聚酯齐聚体中的至少一种。
上述一种PDLC液晶组合物,作为一种优选的实施方案,所述可聚合单体为丙烯酸酯;
优选地,所述可聚合单体为丙烯酸异冰片脂、丙烯酸缩水甘油酯、丙烯酸丁酯、二丙二醇二丙烯酸酯、2-(2-乙氧基乙氧基)乙基丙烯酸酯、三羟甲基丙烷三丙烯酸酯、三羟甲基丙烷-2-硫氢基乙酸三酯、1,6-己二醇二丙烯酸酯等丙烯酸酯中的至少一种。
上述一种PDLC液晶组合物,作为一种优选的实施方案,所述染料为偶氮类染料、蒽醌类染料或杂环类染料中的至少一种。
所述蒽醌类染料的结构如通式M所示:
Figure BDA0004077845480000061
式中R1、R2、R3、R4表示烷基、烷氧基、芳香族烃基、取代烷基、取代氨基、卤素、氢原子、羟基;
Ra、Rb表示取代苯基、取代环己基、取代苯基乙基、取代环烷基乙基、取代苯基乙炔基。
优选地,所述蒽醌染料的结构通式P、Q、S所示:
通式P的结构式为:
Figure BDA0004077845480000071
通式Q的结构式为:
Figure BDA0004077845480000072
通式S的结构式为:
Figure BDA0004077845480000073
式中m、n为0、1或2;
Ra1、Ra2为烷基、烷氧基、芳香族烃基、取代烷基、卤素、氢原子、羟基。
上述一种PDLC液晶组合物,作为一种优选的实施方案,所述隔离物为聚酯材料、聚苯乙烯材料、玻璃球或玻璃棒中的至少一种。
优选地,所述稳定剂的结构式如Y-1至Y-9所示:
Y-1的结构式为:
Figure BDA0004077845480000081
Y-2的结构式为:
Figure BDA0004077845480000082
Y-3的结构式为:
Figure BDA0004077845480000083
Y-4的结构式为:
Figure BDA0004077845480000084
Y-5的结构式为:
Figure BDA0004077845480000085
Y-6的结构式为:
Figure BDA0004077845480000091
Y-7的结构式为:
Figure BDA0004077845480000092
Y-8的结构式为:
Figure BDA0004077845480000093
Y-9的结构式为:
Figure BDA0004077845480000094
优选地,所述引发剂为光引发剂,进一步优选地,所述引发剂为1-羟环己基苯酮、2-羟基-2-甲基苯丙酮、1,1'-(亚甲基二-4,1-亚苯基)双[2-羟基-2-甲基-1-丙酮、2-羟基-4′-(2-羟乙氧基)-2-甲基苯丙酮、1-羟环己基苯酮、2-苄基-2-(二甲基氨基)-4'-吗啉基苯基丁酮、2-甲基-2-(4-吗啉基)-4'-(甲硫基)苯丙酮、1-(联苯基-4-基)-2-甲基-2-吗啉基丙烷-1-酮、二苯甲酮、安息香二甲醚、4-异丁基苯基-4'-甲基苯基碘六氟磷酸盐、苯基双(2,4,6-三甲基苯甲酰基)氧化膦、二苯基(2,4,6-三甲基苯甲酰基)氧化膦、邻氯代六芳基双咪唑、对二甲氨基苯甲酸异辛酯中的至少一种。
优选的,为保证在有色体系中的固化效率,所述引发剂会根据引发剂的吸收峰波长进行长短波的搭配混合,如安息香二甲醚和1-羟环己基苯酮混合、二苯基(2,4,6-三甲基苯甲酰基)氧化膦和2-甲基-2-(4-吗啉基)-4'-(甲硫基)苯丙酮混合、苯基双(2,4,6-三甲基苯甲酰基)氧化膦和2-羟基-2-甲基苯丙酮混合。
所述PDLC液晶组合物经胶辊辊压被涂布于两层导电电极层之间或通过真空灌晶填充于两层导电电极层之间后,在紫外光强0.05mw/cm2~300mw/cm2,温度10℃~60℃下,曝光时间5s~120min,即可形成PDLC调光器件。
优选的,所述紫外光强为5mw/cm2~20mw/cm2,所述温度为25℃~40℃,曝光时间为30s~5min。
本发明的第三方面,提供一种宽温液晶调光器件,由上至下依次包括第一基体层、中间层、第二基体层;所述中间层为权利要求5-9任一项所述PDLC液晶组合物层;
所述第一基体层和第二基体层可以是玻璃、PET、PC、PMMA或其它任何有机和无机透明材质。
所述第一导电电极层和第二导电电极层可以是纳米银线、碳纳米管、ITO、TZO或其它任何导电材料。
第一基体层和中间层相接触的面上设置有第一导电电极层,第二基体层和中间层相接触的面上设置有第二导电电极层。
上述一种宽温液晶调光器件,作为一种优选的实施方案,还包括第一功能层和第二功能层,所述第一功能层设置于所述第一基体层的上表面,所述第二功能层设置于所述第二基体层的下表面。
第一功能层和第二功能层可以是抗紫外镀层,也可以是反红外镀层,也可以是其它功能性镀层。
本发明的有益效果为:本发明所述液晶组合物具有优异的宽温工作范围,由其制成的宽温调光器件在-30℃下响应时间<10s;在100℃下断电雾度>95%;60V下的雾度最低可至2.5%;而且可以通过调整染料的种类和配比,定制不同颜色、不同透过率的产品。由于染料和液晶的良好适配,染料浓度可添加至5%以上,在-40℃下仍未有染料析出,雾态总透过率最低可至10%以下。
本发明所述宽温调光器件可在透明态和雾态之间进行切换,起到光线调节的作用,可应用于投影、汽车天窗、建筑玻璃、显示器等领域。
附图说明
图1为本发明实施例6所述宽温调光器件的结构示意图;
图中:101为第一功能层;102为第二功能层;103为第一基体层;104为第二基体层;105为第一导电电极层;106为第二导电电极层;107为中间层。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案,下面将结合案例对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分的实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本申请保护的范围。
本发明实施例所采用齐聚体、可聚合单体购买于北京格瑞科创公司;
本发明实施例所采用引发剂和稳定剂购买于阿拉丁商城。
本发明所述液晶组合物具有优异的宽温工作范围,由其制成的宽温调光器件在-30℃下响应时间<10s;在100℃下雾态雾度>95%;60V下的雾度最低可至2.5%;而且可以通过调整染料的种类和配比,定制不同颜色、不同透过率的产品。由于染料和液晶的良好适配,染料浓度可添加至5%以上,在-40℃下仍未有染料析出,雾态总透过率最低可至10%以下。
需要说明的是,在液晶组合物的实施例中,关于化合物的记载,使用如下简称,如表1所示:
表1
Figure BDA0004077845480000121
实施例1
实施例1所述液晶组合物由下述重量份的原料组成,原料组成如表2所示:
表2
液晶单体 2PEPN 4PEPN 2OPPN 8OPPN 5CPUN
重量份g 5 10 10 13 13
液晶单体 2CEPPN 3CEPPN 5PPPN 4CCPOCF3 3CCPOCF3
重量份g 11 4 6 3 3
液晶单体 4PTPO2 5PTPO1 3CCP1 3CCP3
重量份g 3 3 10 6
性能 Ts-N(℃) TN-I(℃) no(25℃) Δn(25℃) Δε(25℃)
<-40 127 1.508 0.208 13.7
备注:Ts-N(℃)为液晶结晶点;
TN-I(℃)为:液晶清亮点;
no(25℃)为:25摄氏度(℃)时的寻常光折射率;
Δn(25℃)为:25摄氏度(℃)时的折射率各向异性;
Δε(25℃)为:25摄氏度(℃)时的介电常数各向异性;
从表2可以看出:实施例1中液晶结晶点小于-40℃,清亮点127℃,温宽大于167℃,为宽温液晶组合物,折射率0.208。
实施例2
实施例2所述液晶组合物由下述重量份的原料组成,原料组成如表3所示:
表3
液晶单体 2PPN 4PPN 2PEPPN 4PEPPN 5PEPPN
重量份g 6 6 10 6 5
液晶单体 2OPPN 5OPPN 8OPPN 2CEPPN 3CEPPN
重量份g 6 5 10 12 10
液晶单体 5PPPN 5PEPPN 5PTPO1 4PTPO2
重量份g 10 10 2 2
性能 Ts-N(℃) TN-I(℃) no(25℃) Δn(25℃) Δε(25℃)
<-40 124 1.519 0.248 14.1
从表3可以看出:实施例2中液晶结晶点小于-40℃,清亮点124℃,温宽大于164℃,为宽温液晶组合物,折射率0.248,和实施例2相比,可搭配不同聚合物折射率np制备PDLC。
对比例1
对比例1所述一种PDLC液晶组合物由下述重量份的原料组成,原料组成如表4所示:
表4
Figure BDA0004077845480000131
Figure BDA0004077845480000141
由对比例1所述PDLC液晶组合物制备PDLC膜的方法为:将所述PDLC液晶组合物混合均匀后,注入18um盒厚ITO膜中,在25℃室温条件下,UV光强365nm,15mw/cm2,固化2min,得到PDLC膜。
由对比例1所述PDLC液晶组合物制备所得PDLC膜的性能研究,结果如表5所示:
表5
Figure BDA0004077845480000142
Figure BDA0004077845480000151
从表5可以看出:对比例1中的PDLC膜断电雾度98.6%,遮蔽效果好;但断电透过率70.8%,偏高。
实施例3
实施例3所述一种PDLC液晶组合物由下述重量份的原料组成,原料组成如表6所示:
表6
Figure BDA0004077845480000152
实施例3中黄色染料DY005、红色染料DR005、蓝色染料DB005结构如下:
Figure BDA0004077845480000153
Figure BDA0004077845480000161
由实施例3所述PDLC液晶组合物制备PDLC膜的方法为:将所述PDLC液晶组合物混合均匀后,注入18um盒厚ITO膜中,在25℃室温条件下,UV光强365nm,15mw/cm2,固化2min,得到PDLC膜。由实施例3所述PDLC液晶组合物制备所得PDLC膜的性能研究,结果如表7所示:
表7
Figure BDA0004077845480000162
Figure BDA0004077845480000171
从表7可以看出:因PDLC液晶组合物所含液晶组合物具有宽的高温清亮点和低温结晶点,所述PDLC膜在100℃下的断电雾度仍然大于95%(为96.2%),仍能起到很好的遮蔽效果;同时-30℃时Ton响应时间也很快,才2.57s。
另外因为添加了2%的三色染料,使PDLC膜的断电总透过率降至22.7%,相比普通PDLC的断电透过率70%,呈现明显降低,可很好的应用在汽车天窗等要求低透的应用场景。
由实施例3所述PDLC液晶组合物制备所得PDLC膜的抗老化性能研究,结果如表8所示:
表8
Figure BDA0004077845480000172
从表8可以看出:本申请所述PDLC液晶组合物具有良好的耐高温性和抗紫外性,实施例3所述PDLC液晶组合物制备所得PDLC膜在145℃高温存储、双85存储、氙灯老化后,不管是雾度、透过率,还是Lab色坐标均没有严重的劣化。
实施例4
实施例4所述一种PDLC液晶组合物由下述重量份的原料组成,原料组成如表9所示:
表9
组分 型号 重量份g
液晶组合物 实施例2所述液晶组合物 55
齐聚体 GR-J-001(北京格瑞科创) 18
可聚合单体 GR-J-002(北京格瑞科创) 9
可聚合单体 GR-J-003(北京格瑞科创) 18
引发剂 安息香二甲醚 1
引发剂 2-羟基-2-甲基苯丙酮 0.5
黄色染料 DY005 1.5
红色染料 DR005 1.5
蓝色染料 DB005 2
稳定剂 Y-8 0.2
稳定剂 Y-9 0.1
隔离物 Spacer018(镇江爱邦电子) 0.5
由实施例4所述PDLC液晶组合物制备PDLC膜的方法为:将所述PDLC液晶组合物混合均匀后,注入18um盒厚ITO膜中,在25℃室温条件下,UV光强365nm,15mw/cm2,固化3min,得到PDLC膜。
由实施例4所述PDLC液晶组合物制备所得PDLC膜的性能研究,结果如表10所示:
表10
Figure BDA0004077845480000181
Figure BDA0004077845480000191
从表10可以看出:本实施例所得PDLC膜的染料总浓度达到了5%,其25℃断电总透过率进一步降低至了6.7%。由于染料和液晶的良好适配,在-40℃下存储30天后,染料仍未析出。
实施例5
实施例5所述一种宽温液晶调光器件,由上至下依次包括第一基体层、中间层、第二基体层;所述第一基体层、第二基体层为PET膜;所述中间层为实施例3所述PDLC液晶组合物层;
第一基体层和中间层相接触的面上设置有第一导电电极层,第二基体层和中间层相接触的面上设置有第二导电电极层;所述第一导电电极层、第二导电电极层为氧化铟锡。
实施例6
实施例6所述一种宽温液晶调光器件,由上至下依次包括第一功能层、第一基体层、中间层、第二基体层、第二功能层;所述第一功能层、第二功能层为抗紫外涂层;所述第一基体层、第二基体层为PET膜;所述中间层为实施例3所述PDLC液晶组合物层;
第一基体层和中间层相接触的面上设置有第一导电电极层,第二基体层和中间层相接触的面上设置有第二导电电极层;所述第一导电电极层、第二导电电极层为氧化铟锡。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员,在不脱离本发明方法的前提下,还可以做出若干改进和补充,这些改进和补充也应视为本发明的保护范围。

Claims (10)

1.一种宽温液晶组合物,其特征在于,包括至少一种通式J所示化合物、至少一种通式K所示化合物、至少一种通式C所示化合物:
通式J所示化合物的结构为:
Figure FDA0004077845470000011
通式J中,RJ1表示碳原子数为1至12的烷基、环戊基、环丁基或环丙基,该烷基中的一个或不相邻的2个及以上的-CH2-可以分别独立地被-CH=CH-、-O-、-CO-、-COO-或-OCO-取代;
RJ2表示H,F,CN,NCS或OCF3
环A、B和C各自彼此独立地表示1,4-亚环己基或1,4-亚苯基;
k表示0或1;
Z1表示CH=CH、O、CO、COO或OCO取代;
Xj1、Xj2、Xj3、Xj4各自彼此独立地表示H、F、CH3或CH2CH3
通式K所示化合物的结构为:
Figure FDA0004077845470000012
通式K中,RK1和RK2分别表示碳原子数为1至12的烷基、环戊基、环丁基或环丙基,该烷基中的一个或不相邻的2个及以上的-CH2-可以分别独立地被-CH=CH-、-O-、-CO-、-COO-或-OCO-取代;
环A、B、C和D各自彼此独立地表示1,4-亚环己基或1,4-亚苯基;
K表示0或1;
通式C所示化合物为通式C-1、通式C-2、通式C-3所示化合物中的至少一种:
通式C-1所示化合物的结构为:
Figure FDA0004077845470000021
通式C-2所示化合物的结构为:
Figure FDA0004077845470000022
通式C-3所示化合物的结构为:
Figure FDA0004077845470000023
通式C式中,R1,R2,R3,R4,R5和R6各自彼此独立地表示C1-C8的烷基,C1-C8的烷氧基,C1-C8的烷基或C1-C8的烷氧基中的一个或不相邻的2个及以上的-CH2-分别独立地被-CH=CH-、-O-、-S-、-CO-、-COO-或-OCO-取代,或,C1-C8的烷基或C1-C8的烷氧基中-CH2-上的一个或多个H原子被F取代;
Y1,Y2,Y3,Y4,Y5各自彼此独立地表示H、F、CH3或CH2CH3
2.根据权利要求1所述一种宽温液晶组合物,其特征在于,所述宽温液晶组合物所含通式J所示化合物的重量份为30-90份、通式K所示化合物的重量份为1-40份、通式C所示化合物的重量份为1-30份。
3.根据权利要求1所述一种宽温液晶组合物,其特征在于,通式J所示化合物为通式J-1所示化合物至通式J-7所示化合物组中的化合物:
通式J-1所示化合物的结构为:
Figure FDA0004077845470000024
通式J-2所示化合物的结构为:
Figure FDA0004077845470000031
通式J-3所示化合物的结构为:
Figure FDA0004077845470000032
通式J-4所示化合物的结构为:
Figure FDA0004077845470000033
通式J-5所示化合物的结构为:
Figure FDA0004077845470000034
通式J-6所示化合物的结构为:
Figure FDA0004077845470000035
通式J-7所示化合物的结构为:
Figure FDA0004077845470000036
式中,Rb表示碳原子数为1至12的烷基、环戊基、环丁基或环丙基,该烷基中的一个或不相邻的2个及以上的-CH2-可以分别独立地被-CH=CH-、-O-、-CO-、-COO-或-OCO-取代;
Xj1、Xj2、Xj3、Xj4各自彼此独立地表示H、F、CH3或CH2CH3
4.根据权利要求1所述一种宽温液晶组合物,其特征在于,通式K所示化合物为通式K-1所示化合物至通式K-6所示化合物组中的化合物:
通式K-1所示化合物的结构为:
Figure FDA0004077845470000041
通式K-2所示化合物的结构为:
Figure FDA0004077845470000042
通式K-3所示化合物的结构为:
Figure FDA0004077845470000043
通式K-4所示化合物的结构为:
Figure FDA0004077845470000044
通式K-5所示化合物的结构为:
Figure FDA0004077845470000045
通式K-6所示化合物的结构为:
Figure FDA0004077845470000046
式中:RK1和RK2分别表示碳原子数为1至12的烷基、环戊基、环丁基或环丙基,该烷基中的一个或不相邻的2个及以上的-CH2-可以分别独立地被-CH=CH-、-O-、-CO-、-COO-或-OCO-取代,
优选地,RK1为碳原子数为1至5的烷基,
优选地,RK2为碳原子数为1至5的烷基、碳原子数为2至5的烷氧基或碳原子数为2至5的烯基。
5.一种PDLC液晶组合物,其特征在于,包括权利要求1-4任一项所述液晶组合物50-80重量份、齐聚体5-30份、可聚合单体20-50重量份、引发剂0.1-5重量份、染料0.1-10重量份、稳定剂0.01-0.5重量份、隔离物0.1-2重量份。
6.根据权利要求5所述一种PDLC液晶组合物,其特征在于,所述齐聚体为为环氧丙烯酸酯齐聚体、聚氨酯丙烯酸酯齐聚体、聚酯丙烯酸酯齐聚体、聚醚丙烯酸酯齐聚体、不饱和聚酯齐聚体中的至少一种。
7.根据权利要求5所述一种PDLC液晶组合物,其特征在于,所述可聚合单体为丙烯酸酯;
优选地,所述可聚合单体为丙烯酸异冰片脂、丙烯酸缩水甘油酯、丙烯酸丁酯、二丙二醇二丙烯酸酯、2-(2-乙氧基乙氧基)乙基丙烯酸酯、三羟甲基丙烷三丙烯酸酯、三羟甲基丙烷-2-硫氢基乙酸三酯、1,6-己二醇二丙烯酸酯等丙烯酸酯中的至少一种。
8.根据权利要求5所述一种PDLC液晶组合物,其特征在于,所述染料为偶氮类染料、蒽醌类染料或杂环类染料中的至少一种;所述隔离物为聚酯材料、聚苯乙烯材料、玻璃球或玻璃棒中的至少一种。
9.一种宽温液晶调光器件,其特征在于,由上至下依次包括第一基体层、中间层、第二基体层;所述中间层为权利要求5-8任一项所述PDLC液晶组合物层;
第一基体层和中间层相接触的面上设置有第一导电电极层,第二基体层和中间层相接触的面上设置有第二导电电极层。
10.根据权利要求9所述一种宽温液晶调光器件,其特征在于,还包括第一功能层和第二功能层,所述第一功能层设置于所述第一基体层的上表面,所述第二功能层设置于所述第二基体层的下表面。
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