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公开(公告)号：KR1020000073687A
公开(公告)日：2000-12-05
申请号：KR1019990017131
申请日：1999-05-13
Applicant: 한국화학연구원
IPC: D06M10/00
Abstract: PURPOSE: Provided is a process for producing a high performance carbon fiber which has improved adhesive property with a matrix resin by electrochemical treatment of surface being carbon fiber. Thereby, the process increases to 60-80% of oxygen functional group on surface of fiber and 38-57% of interlayer shear strength(ILSS) of compound material. CONSTITUTION: The high performance carbon fiber is obtained by a process containing the steps of: using acid solution as electrolytic solution; surface-treating a high strength carbon fiber electrochemically in relatively low current density; and then introducing oxygen functional group on surface of carbon fiber by anodic oxidation to improve surface cohesion with the matrix resin. Acidic electrolytic solution is lewis acid solution of HNO3, H2SO4, HCl, H3PO4, H2C2O4, H2NSO3H and C7C6O2. Concentration of acidic electrolytic solution is 5-40wt.%. Electric current is impressed between a graphite positive plate and a graphite negative plate in 0.5-5V of voltage and 5-500microampere/m2 of current density. Electric current is impressed for 10-120seconds.
Abstract translation: 目的：提供一种高性能碳纤维的制造方法，其通过电化学处理表面为碳纤维而与基体树脂的粘合性提高。 因此，该方法增加到纤维表面的氧官能团的60-80％和复合材料的层间剪切强度（ILSS）的38-57％。 构成：通过以下步骤获得高性能碳纤维：使用酸溶液作为电解液; 在较低电流密度下电化学地对高强度碳纤维进行表面处理; 然后通过阳极氧化在碳纤维表面引入氧官能团，以改善与基体树脂的表面粘结。 酸性电解液是HNO3，H2SO4，HCl，H3PO4，H2C2O4，H2NSO3H和C7C6O2的路易斯酸溶液。 酸性电解液浓度为5-40wt。％。 在石墨正极板和石墨负极板之间以0.5-5V的电压和5-500mA / m2的电流密度印上电流。 电流为10-120秒。
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Patent Agency Ranking
公开(公告)号：KR100321392B1
公开(公告)日：2002-08-21
申请号：KR1019980046527
申请日：1998-10-28
Applicant: 한국화학연구원
IPC: C08J5/18
Abstract: 본 발명은 친수성 단량체, 특히, 아크릴 아미드에 소수성 단량체를 일부 공중합하여 소수성기를 도입하므로써, 액정의 표면에 이들 소수성기들이 흡착되게 하여, 액정의 분산성을 향상시키고 분산된 액정을 안정화시킨 액정 에멀젼 및, 이러한 액정 에멀젼을 사용하여 만든 우수한 전기 광학적 특성을 갖는 고분자 액정 복합필름인 NCAP 필름 및 그것의 제조방법에 관한 것이다.
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公开(公告)号：KR100321397B1
公开(公告)日：2002-08-09
申请号：KR1019980046526
申请日：1998-10-28
Applicant: 한국화학연구원
IPC: C08J5/18
Abstract: 본 발명은 친수성 단량체, 특히, 아크릴 아미드에 소수성 단량체를 공중합하여 전체적으로 수용성인 공중합체 및 계면활성제를 첨가하여 액정의 분산성을 향상시키고 분산된 액정을 안정화시켜 액정의 사용량을 줄이고 더불어 높은 콘트라스트비와 낮은 구동전압을 지닌 우수한 전기 광학적 특성을 갖는 고분자 액정 복합 필름 및 그것의 제조방법에 관한 것이다.
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公开(公告)号：KR1020000028334A
公开(公告)日：2000-05-25
申请号：KR1019980046527
申请日：1998-10-28
Applicant: 한국화학연구원
IPC: C08J5/18
CPC classification number: C09K19/544 , C09K19/542
Abstract: PURPOSE: A liquid crystal emulsion improved the dispersion of a liquid crystal and stabilized the dispersed liquid crystal, a polymer liquid crystal composite film and preparation method thereof are provided which prepare the composite film without using a dispersing agent by modifying a water soluble polymer used as a matrix. CONSTITUTION: A liquid emulsion for a mantic curvilinear aligned phase comprises a water soluble copolymer manufactured by polymerizing a hydrophilic monomer and from 14 to 25% by weight of one or two or more of hydrophobic monomers, from 1 to 5.5% by weight of a surface active agent and a liquid crystal such as an azomethine compound or azo compound mantic liquid crystal. The polymeric matrix can be used in manufacturing a large liquid crystal display because of its excellent electro-optical property.
Abstract translation: 目的：提供一种液晶乳液，改善了液晶的分散性，使分散的液晶稳定化，提供了一种聚合物液晶复合膜及其制备方法，其制备复合膜而不使用分散剂，通过改性水溶性聚合物 一个矩阵。 构成：用于神经曲线排列相的液体乳液包括通过聚合亲水性单体和14至25重量％的一种或两种或多种疏水性单体制备的水溶性共聚物，1至5.5重量％的表面 活性剂和液晶如偶氮甲碱化合物或偶氮化合物语言液晶。 由于其优异的电光性能，聚合物基质可用于制造大型液晶显示器。
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公开(公告)号：KR1020000028333A
公开(公告)日：2000-05-25
申请号：KR1019980046526
申请日：1998-10-28
Applicant: 한국화학연구원
IPC: C08J5/18
CPC classification number: C09K19/542 , C09K19/544
Abstract: PURPOSE: A high functional polymer dispersion liquid crystal composite film improved the dispersion of a liquid crystal and stabilized the dispersed liquid crystal and preparation method thereof are provided which have a high contrast ratio, low driving voltage and hydrolysis. CONSTITUTION: A polymer dispersion liquid crystal composite film comprises a water soluble copolymer manufactured by polymerizing a hydrophilic monomer and from 14 to 25% by weight of one or two or more of hydrophobic monomers, from 1 to 5.5% by weight of a surface active agent and a liquid crystal. The liquid crystal is an azomethine compound or azo compound mantic liquid crystal and in an amount of from 50 to 70% by weight based on the water soluble polymer. The film is used for a color projector, a photoelectric bulb of an interior light control lamp and solar heat gains as well as widely applying to a control window, a large liquid crystal display, a light interruption apparatus.
Abstract translation: 目的：高功能聚合物分散液晶复合膜改善了液晶的分散性和稳定的分散液晶，并提供了具有高对比度，低驱动电压和水解的制备方法。 构成：聚合物分散液晶复合膜包括通过聚合亲水性单体和14至25重量％的一种或两种或多种疏水单体制备的水溶性共聚物，1至5.5重量％的表面活性剂 和液晶。 该液晶是一种偶氮甲碱化合物或偶氮化合物，其水溶性聚合物的含量为50至70重量％。 该膜用于彩色投影仪，内部光控制灯的光电灯泡和太阳能热增益，以及广泛应用于控制窗，大型液晶显示器，光中断装置。
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