液晶聚酯 的英文怎麼說
中文拼音 [yèjīngjùzhǐ]
液晶聚酯
英文
liquid crystal polyester- 液 : 名詞(液體) liquid; fluid; juice
- 晶 : Ⅰ形容詞(光亮) brilliant; glittering Ⅱ名詞1. (水晶) quartz; (rock) crystal 2. (晶體) any crystalline substance
- 聚 : 動詞(聚集; 聚積) assemble; gather; get together
- 酯 : 名詞[化學] (有機化合物的一類) ester
- 液晶 : [物理學] liquid crystal; mesomorphic phase; mesomorphous phase
- 聚酯 : [化學] polyester; yukalac; dion聚酯玻璃鋼 organic toughened glass; 聚酯薄膜 [材料] polyester film...
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Studies on the liquid crystalline characters and phase transition behaviors of a poly ester imide copolymer
聚酯酰亞胺共聚物的液晶特性和相轉變研究Through molecular design, a series of liquid crystalline copolyesters, which possibly possessed the auxetic behavior, were prepared by solution condensation reaction between 2, 5 - bis ( p - alkoxy benzoyloxy ) hydrobenzoquinone, 4, 4 ' - ( decanoxy ) dibenzoyl chloride and 4, 4 ' - dihydroxy - oc, co - diphenoxydecane
經分子設計,通過2 , 5 ?二(對烷氧基苯酰氧基)對苯二酚、 4 , 4 』 ?二羥基? , ?二苯氧基癸烷和4 , 4 』 ? (癸二酰氧基)二苯甲酰氯之間的縮合反應合成了一系列具有負泊松比潛能的液晶共聚酯。Based on the liquid crystal polymer theory, two kinds of polyacrylates were synthesized by choosing biphenyl group as rigid nucleus of mesophase group and six methylene chain as flexible spacing group. an important chiral additive was synthesized by choosing l ( - ) ~ 2 - octanol as chiral group. mixture was made of the additive and liquid crystalline polymer, which structure was identified by ftit, " ii nmr, dsc and pom
本論文根據液晶分子結構理論,選擇聯苯基作為介晶基元的剛性核、柔性的六亞甲基脂肪鏈為柔性間隔基,與丙烯酸反應,合成了兩種丙烯酸酯型聚合物;以拆分的l ( - ) 2 -辛醇為手性基團合成了一種液晶手性添加劑,並將所合成的手性添加劑與液晶聚合物共混,採用ftit 、 ~ 1h - nmr 、 dsc 、 pom等手段對合成的化合物、共混物進行了表徵。The main points of this dissertation consist the following points : l. this dissertation has summarized basal theory and app. l ication prospect of ferroelectric liquid crystal, ferroelectric liquid crystal polymer and chiral additive. a kind of chiral additive of liquid crystal and two kinds of polyacrylates were designed here. 2
本論文在緒論中總結了小分子鐵電性液晶、高分子鐵電性液晶及手性添加劑等液晶的基本理論與應用前景,並設計了一種液晶手性添加劑,兩種丙烯酸酯型聚合物。Polymer dispersed liquid crystal ( pdlc ) films are prepared from photo - polymerization of ( cholesteryl acrylate / 2 - hydroxyethyl methacrylate / liquid crystal ) mixtures induced by ultraviolet radiation
摘要選用丙烯酸膽固醇酯甲基丙烯酸-羥乙酯液晶復合體系,在紫外光照射下制備聚合物分散液晶薄膜。The research on the effect of liquid - liquid transition of polyacrylate on crystallization - melting of pdms indicates that above the melting temperature of pdms, pdms is reinforced by a special mutual action between p - electron in carbonyl of polyacrylate and 3d orbit in si atom of pdms, while below the temperature, the pdms crystal is lessened, which can not completely remove the crystal of pdms. however, it is the crystallization behavior of pdms that results in its most segments relaxation being restrained
研究聚丙烯酸酯液一液轉變對聚二甲基硅氧烷結晶一熔融影響的結果表明:碳基碳原子上p電子與出原於中3d軌道相互作用,在聚h甲基硅氧烷熔融轉變溫度以上,對其有分子增強作用;在聚二甲基硅氧烷熔融轉變溫度以下,霎對其有降低結晶度的作用,但不能消除結晶現象。The traditional theory considered that the usual double acrylate molecule with liquid crystal of a kind had the same tropism as the liquid crystal because of the effect of the liquid crystal, then was anchored to form the long fibre network structure
經典理論認為:首先是液晶性的二丙烯酸酯單體在液晶中的取向,然後通過聚合過程將其固定下來形成纖維網路的的機理。4. mixture was made of chiral additive and liquid crystal polymer, which properties were studied. whether the mixture has ferroelectricity has been discussed, which would establish some bases for the research and application of the liquid crystal display materials and nonlinear optical materials in future
將液晶手性添加劑和液晶聚合物共混,並研究了共混物的性能,探討了共混型丙烯酸酯類液晶聚合物的鐵電性能,為將來的液晶顯示材料及非線形光學材料的研究及應用奠定了基礎。Side chain polyurethanes with azo group are characterized and confirmed by ftir, uv - vis, dsc, vpo, z - scan, polarize microscope. the results show that the end - group and the flexibility of main chain affects the growing up of liquid crystalline phase greatly. because the determinable way of detection is defective, it was not founded the liquid crystalline behavior obviously contributes to the non1inear optical thection
最後,在分析討論實驗結果的基礎上,指出側鏈型聚氨酯液晶中側鏈介晶基元的末端基團及主鏈的柔性對其液晶態的形成有重要影響;由於檢測手段的不齊備,未能觀察到熔致型聚氨酯液晶的液晶行為對其非線性光學效應的貢獻作用。Study on the compatibility of in - situ composite of polycarbonate and thermotropic liquid crystalline copolyester
熱致液晶共聚酯原位復合材料相容性的研究Ethylene glycol dimethacrylate ( egdmma ) was taken place of the unbending molecule in this paper. the egdmma is flexible with double polymericable functions. as the same as the usual double acrylate molecule with liquid crystal of a kind, the egdmma became polymer of long fibre network structure after the ultraviolet radiation polymerization
本研究選用具有可聚合的雙官能團的柔性分子:二甲基丙烯酸乙二醇酯,用它來代替剛性分子,聚合反應時與常使用的具有液晶性的雙丙烯酸酯剛性分子一樣可以交聯聚合,經紫外光照引發聚合后得到聚合物呈長纖維狀網路織構。It is a1so referred to the nlo liquid crystal polyurthanes and the system of nlo liquid crysta1 polymer briefly. fchrmore, the possibility of combining the nlo polyurthanes and lcpu is also discussed based on azobenzene compound, whch own liquid crysta1line mesogenic unit and nonlinear opical wht togethel a series of polyurethanes with two kinds of diisocyanates were synthsized with azobenzene compounds which we prepared beforehand. the azobenzene compounds were charaterized and confirmed by ftir, " h - nmr, uv - vs, dsc, and elemeni analysis
本文第一章簡介了液晶的有關基本概念;綜述了聚氨酯液晶的研究進展,並著重總結了聚氨酯液晶的合成方法和影響聚氨酯液晶形成液晶相的因素;介紹了非線性光學聚氨酯液晶,對非線性光學聚合物液晶體系也作了扼要的闡述,指出利用含有既是液晶基元又是非線性光學單元的偶氮基團的化合物合成聚氨酯液晶,實現兩者結合的可能性。L is the initiator of liquid peroxide cyclohexanone, they are cold polyester resin curing the initiator. features : no crystallization of winter produce
引發劑l是液態過氧化環已酮,它們是聚酯樹脂冷固化成型的引發劑。特點:冬天不會有結晶體產生。It also has stronger hydrogen bond which can result in partly physical crosslinkage in polymers, which can fasten orienting of chromophore. all these benefit to obtain high nlo coefficient. in chapter one, some basic conceptions about lc and the advance in lcpu are described, especially the synthesis methods on lcpu and the influence factors of lcpu formation liquid crystalline phase
聚氨酯液晶是分子排列具有一定取向的聚合物材料,可為非線性光學聚氨酯提供一種較好的非對稱取向的介質環境,聚氨酯中還存在較強的氫鍵作用,使得聚合物材料有部分物理交聯,能固定發色團的取向,這些因素有利於獲得較大的非線性光學效應。Abstract : crystallinity and mechanical properties of poly ( ester - ether ) liquid crystalline elastomer and their fibers were investigated by waxdand single fiber electronic tensile strength tester
文摘:利用廣角x射線衍射儀和單纖維電子強力儀對聚酯醚液晶彈性體及其纖維的結晶性和力學性能進行了研究。分享友人