CN113024712A - 一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法 - Google Patents
一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法 Download PDFInfo
- Publication number
- CN113024712A CN113024712A CN201911346420.4A CN201911346420A CN113024712A CN 113024712 A CN113024712 A CN 113024712A CN 201911346420 A CN201911346420 A CN 201911346420A CN 113024712 A CN113024712 A CN 113024712A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- polymer dispersed
- dispersed liquid
- crystal material
- ultraviolet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 title claims abstract description 68
- 239000000178 monomer Substances 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 41
- 239000004988 Nematic liquid crystal Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract 7
- RHNJVKIVSXGYBD-UHFFFAOYSA-N 10-prop-2-enoyloxydecyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCCCCCOC(=O)C=C RHNJVKIVSXGYBD-UHFFFAOYSA-N 0.000 claims description 9
- 229920006267 polyester film Polymers 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 8
- LCXXNKZQVOXMEH-UHFFFAOYSA-N Tetrahydrofurfuryl methacrylate Chemical compound CC(=C)C(=O)OCC1CCCO1 LCXXNKZQVOXMEH-UHFFFAOYSA-N 0.000 claims description 4
- FIXKCCRANLATRP-UHFFFAOYSA-N 3,5,5-trimethylhexyl prop-2-enoate Chemical compound CC(C)(C)CC(C)CCOC(=O)C=C FIXKCCRANLATRP-UHFFFAOYSA-N 0.000 claims description 3
- AOJOEFVRHOZDFN-UHFFFAOYSA-N benzyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC1=CC=CC=C1 AOJOEFVRHOZDFN-UHFFFAOYSA-N 0.000 claims description 3
- GCTPMLUUWLLESL-UHFFFAOYSA-N benzyl prop-2-enoate Chemical compound C=CC(=O)OCC1=CC=CC=C1 GCTPMLUUWLLESL-UHFFFAOYSA-N 0.000 claims description 3
- 210000002858 crystal cell Anatomy 0.000 claims description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 3
- MUTNCGKQJGXKEM-UHFFFAOYSA-N tamibarotene Chemical compound C=1C=C2C(C)(C)CCC(C)(C)C2=CC=1NC(=O)C1=CC=C(C(O)=O)C=C1 MUTNCGKQJGXKEM-UHFFFAOYSA-N 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 abstract description 20
- 238000005457 optimization Methods 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract 1
- 101150012763 endA gene Proteins 0.000 abstract 1
- 239000010408 film Substances 0.000 description 29
- 239000010409 thin film Substances 0.000 description 21
- 239000007788 liquid Substances 0.000 description 13
- KWVGIHKZDCUPEU-UHFFFAOYSA-N 2,2-dimethoxy-2-phenylacetophenone Chemical compound C=1C=CC=CC=1C(OC)(OC)C(=O)C1=CC=CC=C1 KWVGIHKZDCUPEU-UHFFFAOYSA-N 0.000 description 8
- 239000003999 initiator Substances 0.000 description 8
- 238000006116 polymerization reaction Methods 0.000 description 8
- 238000001000 micrograph Methods 0.000 description 7
- 238000004626 scanning electron microscopy Methods 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 7
- 238000002834 transmittance Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- OIWOHHBRDFKZNC-UHFFFAOYSA-N cyclohexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1CCCCC1 OIWOHHBRDFKZNC-UHFFFAOYSA-N 0.000 description 2
- MZRQZJOUYWKDNH-UHFFFAOYSA-N diphenylphosphoryl-(2,3,4-trimethylphenyl)methanone Chemical compound CC1=C(C)C(C)=CC=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 MZRQZJOUYWKDNH-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 244000028419 Styrax benzoin Species 0.000 description 1
- 235000000126 Styrax benzoin Nutrition 0.000 description 1
- 235000008411 Sumatra benzointree Nutrition 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229960002130 benzoin Drugs 0.000 description 1
- KBLWLMPSVYBVDK-UHFFFAOYSA-N cyclohexyl prop-2-enoate Chemical compound C=CC(=O)OC1CCCCC1 KBLWLMPSVYBVDK-UHFFFAOYSA-N 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/32—Esters containing oxygen in addition to the carboxy oxygen containing epoxy radicals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/38—Polymers
- C09K19/3833—Polymers with mesogenic groups in the side chain
- C09K19/3842—Polyvinyl derivatives
- C09K19/3852—Poly(meth)acrylate derivatives
- C09K19/3857—Poly(meth)acrylate derivatives containing at least one asymmetric carbon atom
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2333/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/14—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Abstract
本发明属于液晶应用技术领域,涉及一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法。其特征在于,包括以下步骤:1)将紫外光可聚合单体和向列相液晶按照质量比1:4~3:2,加入光引发剂混合均匀后灌入液晶盒内,获得样品;2)将步骤1)获得的样品在温度0~303.2K,使用波长为365nm的紫外光,光辐照强度为2.0~10.0mW/cm2,光辐照时间为2~10min,固化形成聚合物分散液晶材料。本发明可实现聚合物分散液晶材料低驱动电压和高对比度的优异电光性能;另外,末端带有刚性结构单体的引入,可为聚合物分散液晶材料的制备和电光性能的优化提供新思路。
Description
技术领域
本发明属于液晶应用技术领域,特别地,涉及一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法。该薄膜材料可广泛应用于液晶显示、智能玻璃以及投影显示等相关领域的研究中。
背景技术
聚合物分散液晶(PDLC)是一种复合材料,具有双折射性质的液晶微滴均匀分散于连续的高分子基体中。当未对PDLC薄膜施加电场时,液晶微滴指向矢随机分布,液晶微滴的有效折射率和高分子基体不匹配,入射光在液晶微滴和高分子基体的界面发生反射和折射,PDLC薄膜呈现乳白色的散射态。当对PDLC薄膜外加电场时,液晶微滴指向矢沿电场方向垂直基板取向排列,液晶微滴的有效折射率和高分子基体接近,入射光直接透过薄膜,PDLC薄膜呈现透明态。PDLC薄膜具有制备工艺简单、成本低、无需取向处理和偏振片、高亮度和宽视角等优势,具有广泛的应用前景。目前,PDLC薄膜材料已广泛应用于电控智能玻璃、大面积柔性显示、液晶光栅和衍射光学等方面。
一般而言,PDLC薄膜电光性能的评估参数分别为驱动电压、对比度和响应时间。特别地,大量的研究工作致力于降低驱动电压和提高对比度,如通过液晶和可聚合单体材料的选择、各组分比例的调控、聚合条件的优化等来实现以上电光性能的改善。其中,可聚合单体大多选择带有柔性烷基链的单体,仅有极其少量的工作中提及引入带有刚性结构的单体。
发明内容
在液晶/高分子复合材料体系中引入带有刚性结构的可聚合单体的引入可有效地提高对比度、拓宽网络形貌的调控范围。因此,本发明中涉及一系列的末端带有刚性结构的可聚合单体,制备出电光性能优异的末端带有刚性结构单体的聚合物分散液晶薄膜材料,为开发具有优异电光性能的聚合物分散液晶薄膜材料提供了新思路。
本发明的目的在于提供一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法,实现PDLC薄膜网络形貌调控的拓展、电光性能的优化。
本发明的具体技术方案如下:
1)将紫外光可聚合单体和向列相液晶按照质量比1:4~3:2,加入光引发剂混合均匀后灌入液晶盒内,获得样品;
2)将步骤1)获得的样品在温度0~303.2K,使用波长为365nm的紫外光,光辐照强度为2.0~10.0mW/cm2,光辐照时间为2~10min,固化形成聚合物分散液晶材料。
作为优选,所述向列相液晶为商用向列相液晶BJD010200-100(TNI=361.0K,Δn=0.217,Δε=11.7)、SLC1717、E7或E8。
其中,本发明所涉及的紫外光可聚合单体包括:a:丙烯酸四氢糠基酯,b甲基丙烯酸四氢糠基酯,c:2-丙烯酸环己基酯,d:2-甲基丙烯酸环己基酯,e:丙烯酸苄酯,f:甲基丙烯酸苄酯,g:3,5,5-三甲基己基丙烯酸酯和h:1,10-癸二醇二丙烯酸酯中的一种或两种以上。
作为优选,所述以上8种紫外光可聚合单体的分子式如图1所示。
其中,所述引发剂为本领域公知的光引发剂,优选为安息香双甲醚(Irgacure651)或三甲基苯甲酰二苯基氧化膦(TPO),所述加入光引发剂占总质量的0.1wt%~5.0wt%。
作为优选,所述液晶盒的厚度通过两片导电玻璃间聚酯薄膜的厚度来控制,其中,所述液晶的厚度为20±1.0μm。
作为优选,所述导电玻璃为单面镀有透明ITO导电薄膜的玻璃。
与现有技术相比,本发明的优势在于:
提出一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法,在保证低驱动电压的前提下,可有效地提高薄膜材料的对比度,并拓宽网络形貌的调控范围,为开发具有优异电光性能的聚合物分散液晶薄膜材料提供了新思路。
附图说明
图1为本发明所述紫外紫外光可聚合单体及光引发剂的分子式;
图2为本发明实施例1制备的聚合物分散液晶薄膜材料的电压-透过率曲线;
图3为本发明实施例1制备的聚合物分散液晶薄膜材料的高分子网络的扫描电镜图片;
图4为本发明实施例2制备的聚合物分散液晶薄膜材料的电压-透过率曲线;
图5为本发明实施例2制备的聚合物分散液晶薄膜材料的高分子网络的扫描电镜图片;
图6为本发明实施例3制备的聚合物分散液晶薄膜材料的电压-透过率曲线;
图7为本发明实施例3制备的聚合物分散液晶薄膜材料的高分子网络的扫描电镜图片;
图8为本发明实施例4制备的聚合物分散液晶薄膜材料的电压-透过率曲线;
图9为本发明实施例4制备的聚合物分散液晶薄膜材料的高分子网络的扫描电镜图片;
图10为本发明实施例5制备的聚合物分散液晶薄膜材料的电压-透过率曲线;
图11为本发明实施例5制备的聚合物分散液晶薄膜材料的高分子网络的扫描电镜图片;
图12为本发明实施例6制备的聚合物分散液晶薄膜材料的电压-透过率曲线;
图13为本发明实施例6制备的聚合物分散液晶薄膜材料的高分子网络的扫描电镜图片;
图14为本发明实施例7制备的聚合物分散液晶薄膜材料的电压-透过率曲线;
图15为本发明实施例7制备的聚合物分散液晶薄膜材料的高分子网络的扫描电镜图片。
具体实施方式
下面结合具体实施例对本发明作进一步说明。
实施例1
所选用紫外光聚合单体为,a:丙烯酸四氢糠基酯,h:1,10-癸二醇二丙烯酸酯,且所有单体的质量比为:a/h(wt%)=4/1。本发明选用的向列相液晶为BJD010200-100(TNI=361.0K,Δn=0.217,Δε=11.7),且将上述混合紫外光可聚合单体体系与液晶的质量比为3:7混合均匀,在室温下(298.2K)形成各向同性液体,加入光引发剂的含量为总质量的2.0wt%(引发剂选用Irgacure 651),将均匀的各向同性液体灌入PET聚酯薄膜间隔垫厚度控制的液晶盒。在室温(298.2K)条件下,采用365nm波长的紫外光,光辐照强度为8.0mW/cm2,光辐照时间为10min,紫外固化形成聚合物分散液晶材料。
采用液晶综合参数测试仪(LCT-5016C)测试上述制备PDLC薄膜的电光性能曲线如图2所示;采用扫描电子显微镜(SEM)测试PDLC薄膜高分子网络的形貌如图3所示。
实验结果表明,所制备PDLC薄膜的阈值电压为67.6V,饱和电压为96.6V,对比度为59.1。
实施例2
所选用紫外光聚合单体为,b:甲基丙烯酸四氢糠基酯,h:1,10-癸二醇二丙烯酸酯,且所有单体的质量比为:b/h(wt%)=4/1。本发明选用的向列相液晶为BJD010200-100(TNI=361.0K,Δn=0.217,Δε=11.7),且将上述混合紫外光可聚合单体体系与液晶的质量比为3:7混合均匀,在室温下(298.2K)形成各向同性液体,加入光引发剂的含量为总质量的2.0wt%(引发剂选用Irgacure 651),将均匀的各向同性液体灌入PET聚酯薄膜间隔垫厚度控制的液晶盒。在室温(298.2K)条件下,采用365nm波长的紫外光,光辐照强度为8.0mW/cm2,光辐照时间为10min,紫外固化形成聚合物分散液晶材料。
采用液晶综合参数测试仪(LCT-5016C)测试上述制备PDLC薄膜的电光性能曲线如图4所示;采用扫描电子显微镜(SEM)测试PDLC薄膜高分子网络的形貌如图5所示。
实验结果表明,所制备PDLC薄膜的阈值电压为7.5V,饱和电压为23.2V,对比度为21.0。
实施例3
所选用紫外光聚合单体为,c:2-丙烯酸环己基酯,h:1,10-癸二醇二丙烯酸酯,且所有单体的质量比为:c/h(wt%)=4/1。本发明选用的向列相液晶为BJD010200-100(TNI=361.0K,Δn=0.217,Δε=11.7),且将上述混合紫外光可聚合单体体系与液晶的质量比为3:7混合均匀,在室温下(298.2K)形成各向同性液体,加入光引发剂的含量为总质量的2.0wt%(引发剂选用Irgacure 651),将均匀的各向同性液体灌入PET聚酯薄膜间隔垫厚度控制的液晶盒。在室温(298.2K)条件下,采用365nm波长的紫外光,光辐照强度为8.0mW/cm2,光辐照时间为10min,紫外固化形成聚合物分散液晶材料。
采用液晶综合参数测试仪(LCT-5016C)测试上述制备PDLC薄膜的电光性能曲线如图6所示;采用扫描电子显微镜(SEM)测试PDLC薄膜高分子网络的形貌如图7所示。
实验结果表明,所制备PDLC薄膜的阈值电压为69.3V,饱和电压为97.6V,对比度为1.0。
实施例4
所选用紫外光聚合单体为,d:2-甲基丙烯酸环己基酯,h:1,10-癸二醇二丙烯酸酯,且所有单体的质量比为:d/h(wt%)=4/1。本发明选用的向列相液晶为BJD010200-100(TNI=361.0K,Δn=0.217,Δε=11.7),且将上述混合紫外光可聚合单体体系与液晶的质量比为3:7混合均匀,在室温下(298.2K)形成各向同性液体,加入光引发剂的含量为总质量的2.0wt%(引发剂选用Irgacure 651),将均匀的各向同性液体灌入PET聚酯薄膜间隔垫厚度控制的液晶盒。在室温(298.2K)条件下,采用365nm波长的紫外光,光辐照强度为8.0mW/cm2,光辐照时间为10min,紫外固化形成聚合物分散液晶材料。
采用液晶综合参数测试仪(LCT-5016C)测试上述制备PDLC薄膜的电光性能曲线如图8所示;采用扫描电子显微镜(SEM)测试PDLC薄膜高分子网络的形貌如图9所示。
实验结果表明,所制备PDLC薄膜的阈值电压为18.9V,饱和电压为29.9V,对比度为24.0。
实施例5
所选用紫外光聚合单体为,e:丙烯酸苄酯,h:1,10-癸二醇二丙烯酸酯,且所有单体的质量比为:e/h(wt%)=4/1。本发明选用的向列相液晶为BJD010200-100(TNI=361.0K,Δn=0.217,Δε=11.7),且将上述混合紫外光可聚合单体体系与液晶的质量比为3:7混合均匀,在室温下(298.2K)形成各向同性液体,加入光引发剂的含量为总质量的2.0wt%(引发剂选用Irgacure 651),将均匀的各向同性液体灌入PET聚酯薄膜间隔垫厚度控制的液晶盒。在室温(298.2K)条件下,采用365nm波长的紫外光,光辐照强度为8.0mW/cm2,光辐照时间为10min,紫外固化形成聚合物分散液晶材料。
采用液晶综合参数测试仪(LCT-5016C)测试上述制备PDLC薄膜的电光性能曲线如图10所示;采用扫描电子显微镜(SEM)测试PDLC薄膜高分子网络的形貌如图11所示。
实验结果表明,所制备PDLC薄膜的阈值电压为74.3V,饱和电压为94.8V,对比度为1.2。
实施例6
所选用紫外光聚合单体为,f:甲基丙烯酸苄酯,h:1,10-癸二醇二丙烯酸酯,且所有单体的质量比为:f/h(wt%)=4/1。本发明选用的向列相液晶为BJD010200-100(TNI=361.0K,Δn=0.217,Δε=11.7),且将上述混合紫外光可聚合单体体系与液晶的质量比为3:7混合均匀,在室温下(298.2K)形成各向同性液体,加入光引发剂的含量为总质量的2.0wt%(引发剂选用Irgacure 651),将均匀的各向同性液体灌入PET聚酯薄膜间隔垫厚度控制的液晶盒。在室温(298.2K)条件下,采用365nm波长的紫外光,光辐照强度为8.0mW/cm2,光辐照时间为10min,紫外固化形成聚合物分散液晶材料。
采用液晶综合参数测试仪(LCT-5016C)测试上述制备PDLC薄膜的电光性能曲线如图12所示;采用扫描电子显微镜(SEM)测试PDLC薄膜高分子网络的形貌如图13所示。
实验结果表明,所制备PDLC薄膜的阈值电压为4.0V,饱和电压为34.9V,对比度为2.0。
实施例7
所选用紫外光聚合单体为,b:甲基丙烯酸四氢糠基酯,g:3,5,5-三甲基己基丙烯酸酯,h:1,10-癸二醇二丙烯酸酯,且所有单体的质量比为:b/g/h(wt%)=2/2/1。本发明选用的向列相液晶为BJD010200-100(TNI=361.0K,Δn=0.217,Δε=11.7),且将上述混合紫外光可聚合单体体系与液晶的质量比为3:7混合均匀,在室温下(298.2K)形成各向同性液体,加入光引发剂的含量为总质量的2.0wt%(引发剂选用Irgacure651),将均匀的各向同性液体灌入PET聚酯薄膜间隔垫厚度控制的液晶盒。在室温(298.2K)条件下,采用365nm波长的紫外光,光辐照强度为8.0mW/cm2,光辐照时间为10min,紫外固化形成聚合物分散液晶材料。
采用液晶综合参数测试仪(LCT-5016C)测试上述制备PDLC薄膜的电光性能曲线如图14所示;采用扫描电子显微镜(SEM)测试PDLC薄膜高分子网络的形貌如图15所示。
实验结果表明,所制备PDLC薄膜的阈值电压为11.0V,饱和电压为21.4V,对比度为87.5。
最后所应说明的是,以上实施例仅用以说明本发明的技术方案而非限制。尽管参照实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,对本发明的技术方案进行修改或者等同替换,都不脱离本发明技术方案的精神和范围,其均应涵盖在本发明的权利要求范围当中。
Claims (7)
1.一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法,包括以下步骤:
1)将紫外光可聚合单体和向列相液晶按照质量比1:4~3:2,加入光引发剂混合均匀后灌入液晶盒内,获得样品;
2)将步骤1)获得的样品在温度0~303.2K,使用波长为365nm的紫外光,光辐照强度为2.0~10.0mW/cm2,光辐照时间为2~10min,固化形成聚合物分散液晶材料。
2.根据权利要求1所述的制备方法,其特征在于,所述紫外光可聚合单体包括:丙烯酸四氢糠基酯,甲基丙烯酸四氢糠基酯,2-丙烯酸环己基酯,2-甲基丙烯酸环己基酯,丙烯酸苄酯,甲基丙烯酸苄酯,3,5,5-三甲基己基丙烯酸酯和1,10-癸二醇二丙烯酸酯中的一种或两种以上。
3.根据权利要求1所述的制备方法,其特征在于,所述加入光引发剂占总质量的0.1wt%~5.0wt%。
4.根据权利要求1所述的制备方法,其特征在于,所述向列相液晶为向列相液晶BJD010200-100、SLC1717、E7或E8。
5.根据权利要求1所述的制备方法,其特征在于,所述液晶盒的厚度通过两片导电玻璃间聚酯薄膜的厚度来控制,其中,所述液晶的厚度为20±1.0μm。
6.根据权利要求5所述的制备方法,其特征在于,所述导电玻璃为单面镀有透明ITO导电薄膜的玻璃。
7.一种基于末端带有刚性结构单体的聚合物分散液晶材料,其特征在于,所述聚合物分散液晶材料由权利要求1-6任一所述方法制得。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911346420.4A CN113024712B (zh) | 2019-12-24 | 2019-12-24 | 一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911346420.4A CN113024712B (zh) | 2019-12-24 | 2019-12-24 | 一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113024712A true CN113024712A (zh) | 2021-06-25 |
CN113024712B CN113024712B (zh) | 2022-05-17 |
Family
ID=76451660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201911346420.4A Active CN113024712B (zh) | 2019-12-24 | 2019-12-24 | 一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113024712B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114645336A (zh) * | 2022-03-10 | 2022-06-21 | 深圳信息职业技术学院 | 聚合物蓝相液晶纤维及其制备方法和应用 |
CN115639706A (zh) * | 2022-09-21 | 2023-01-24 | 杭州兵智科技有限公司 | 一种基于两性离子的聚合物分散液晶器件及其制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104177539A (zh) * | 2014-07-22 | 2014-12-03 | 北京大学 | 一种聚合物分散液晶材料的制备方法 |
CN105602578A (zh) * | 2015-12-18 | 2016-05-25 | 石家庄诚志永华显示材料有限公司 | 一种广视角的pdlc组合物 |
CN106632883A (zh) * | 2016-10-19 | 2017-05-10 | 北京佳视智晶光电科技有限公司 | 一种视角可切换智能显示膜的制备方法 |
WO2018072399A1 (zh) * | 2016-10-19 | 2018-04-26 | 北京佳视智晶光电科技有限公司 | 视角可切换智能显示膜的制备方法及含该显示膜的复合膜 |
-
2019
- 2019-12-24 CN CN201911346420.4A patent/CN113024712B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104177539A (zh) * | 2014-07-22 | 2014-12-03 | 北京大学 | 一种聚合物分散液晶材料的制备方法 |
CN105602578A (zh) * | 2015-12-18 | 2016-05-25 | 石家庄诚志永华显示材料有限公司 | 一种广视角的pdlc组合物 |
CN106632883A (zh) * | 2016-10-19 | 2017-05-10 | 北京佳视智晶光电科技有限公司 | 一种视角可切换智能显示膜的制备方法 |
WO2018072399A1 (zh) * | 2016-10-19 | 2018-04-26 | 北京佳视智晶光电科技有限公司 | 视角可切换智能显示膜的制备方法及含该显示膜的复合膜 |
Non-Patent Citations (2)
Title |
---|
ANNA M. LACKNER 等: "Liquid Crystal Monomer Additives for Improved Polymer Dispersed Liquid Crystals", 《MOL. CRYST. LIQ. CRYST.》 * |
潘才元 等: "含有二色性染料的PDLC的光电性能", 《功能高分子学报》 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114645336A (zh) * | 2022-03-10 | 2022-06-21 | 深圳信息职业技术学院 | 聚合物蓝相液晶纤维及其制备方法和应用 |
CN115639706A (zh) * | 2022-09-21 | 2023-01-24 | 杭州兵智科技有限公司 | 一种基于两性离子的聚合物分散液晶器件及其制备方法 |
CN115639706B (zh) * | 2022-09-21 | 2023-04-11 | 杭州兵智科技有限公司 | 一种基于两性离子的聚合物分散液晶器件及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN113024712B (zh) | 2022-05-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106632772B (zh) | 一种基于乙烯基醚-硫醇紫外光固化体系制备聚合物分散液晶膜的方法 | |
CN103614146B (zh) | 聚合物分散液晶材料、含有该材料的显示器件及其制备 | |
CN102464983B (zh) | 显示器、聚合物分散液晶膜及其制造方法和驱动方法 | |
CN110095896A (zh) | 一种基于液晶/高分子复合材料的调光膜的制备方法 | |
CN109324433B (zh) | 一种掺杂纳米粒子的聚合物分散液晶薄膜及其制备方法 | |
CN110092875B (zh) | 一种基于液晶/高分子复合材料体系的pdlc膜的制备方法 | |
CN113024712B (zh) | 一种基于末端带有刚性结构单体的聚合物分散液晶材料的制备方法 | |
CN101121887A (zh) | 一种聚合物分散液晶薄膜的制备方法 | |
CN101225308A (zh) | 紫外光-加热分步聚合法制备聚合物分散液晶材料的方法 | |
CN109324434A (zh) | 一种聚合物分散液晶膜制备方法和聚合物分散液晶膜 | |
CN110596961A (zh) | 一种电控调光膜及其制备方法 | |
CN102516498A (zh) | 一种基于高分子混合网络聚合物分散液晶材料的制备方法 | |
US20210261864A1 (en) | Material for liquid-crystal device, and liquid-crystal device | |
Nasir et al. | Effect of the photoinitiator concentration on the electro-optical properties of thiol–acrylate-based PDLC smart windows | |
CN1803979A (zh) | 一种聚合物分散液晶膜的制备方法 | |
Zhang et al. | Effect of different monomers on the electro-optical properties of reverse-mode polymer stabilized liquid crystal | |
CN109897644A (zh) | 一种高对比度、低电压驱动及快速响应电控液晶调光膜及其制备方法 | |
CN106707593B (zh) | 一种聚合物分散双稳态近晶a相液晶薄膜及其制备方法 | |
CN110229677A (zh) | 一种低电压驱动聚合物分散液晶膜及其制备方法 | |
JP3508176B2 (ja) | 液晶デバイス | |
CN109884817A (zh) | 一种低电压驱动液晶调光膜及其制备方法 | |
CN113262735B (zh) | 液晶聚合物表面微纳结构的制备方法 | |
CN109721709B (zh) | 一种基于环氧单体光固化制备聚合物稳定液晶薄膜的方法 | |
马Mengfan et al. | Role of fluorescent material on electro-optical performance of PDLC devices | |
CN108164652A (zh) | 一种聚合物分散液晶薄膜材料及制备方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230629 Address after: 213155 Chenguang Industrial Park, Huangli Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: ZHONGHE TECHNOLOGY (CHANGZHOU) Co.,Ltd. Address before: 100871 No. 5, the Summer Palace Road, Beijing, Haidian District Patentee before: Peking University |