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    • 65. 发明公开
    • 폴리락트산을 전기방사하여 얻은 나노섬유 웹 형태의 압전소재, 이 압전소재를 포함하여 이루어지는 압전센서 및 이들의 제조방법
    • 纳米纤维压电材料通过电渗透聚酸,压电传感器及其制造方法获得
    • KR1020160083326A
    • 2016-07-12
    • KR1020140194161
    • 2014-12-30
    • 경희대학교 산학협력단
    • 김갑진이솔지아룬아난드프라부포난사티야나탄
    • H01L41/18H01L41/22
    • H01L41/082B29C47/0004B29C47/0021B29C47/0076B29C47/0085B29C47/0869B29K2067/046B29K2509/00B29K2995/0003B29L2031/3406B29L2031/753D01D1/02D01D5/003D01F6/625D04H1/4326D04H1/728H01L41/1132H01L41/193H01L41/18H01L41/22
    • 본발명은폴리락트산을전기방사하여얻은나노섬유웹 형태의압전소재및 이의제조방법에관한것으로, 구체적으로폴리락트산을용매에용해한방사용액을전기방사하여나노섬유웹의형태로제조함으로써별도의연신공정없이압전특성을나타내도록한 압전소재및 이의제조방법에관한것이다. 본발명의압전소재는제조단가가매우저렴하다는장점을갖으며, 기존 PVDF 압전소재에비해우수하거나유사한압전특성을나타낼수 있다. 따라서본 발명의압전소재를사용한다면보다저렴한가격의압전제품을제조할수 있게된다. 또한, 본발명의압전소재는전기방사공정중에 PLA 사슬의연신이이루어지기때문에, 어떠한추가연신공정도필요하지않는다. 바늘과콜렉터사이에서높은전기장에의해유도되는연신력은어떠한다른연신공정없이도단축방향의 3나선형β-결정사슬을형성시킬수 있다(도 7 참조). 이는필름제조후 반드시연신공정을거쳐야하는기존의 PLA 압전소재에비해제조공정이매우단순하다는장점을나타낸다. 추가로, PLA 필름과비교하여본 발명에따라전기방사를통해제조한 PLA 나노섬유웹을사용할때의장점은다음과같다: PLA 전기방사나노섬유웹은매우얇고유연하다; 전기방사에적용된높은직류전압에의해 PLA 사슬이전기장방향을따라효과적으로정렬된다; 전기방사를사용한한 단계의공정안에서나선형구조의β-형을형성하는것이훨씬더 쉽다.
    • 本发明涉及通过静电纺丝聚乳酸得到的纳米纤维网压电材料及其制造方法。 更具体地说,本发明涉及一种具有压电性能的压电材料及其制造方法,该压电性能是通过静电纺丝溶液制造的,其中聚乳酸用溶剂溶解而不需要任何附加的拉伸工艺。 根据本发明的制造压电材料的成本非常便宜,并且具有比根据现有技术的PVDF压电材料的压电性能更好或更好的压电性能。 因此,当使用本发明的压电材料时,可以制造非常便宜的压电产品。 此外,根据本发明的压电材料,由于在静电纺丝过程中拉伸PLA链,因此不需要任何附加的工艺。 由针和收集器之间形成的高电场引起的拉伸力可以形成单轴3_1螺旋β晶体链而无需任何其它拉伸工艺(见图7)。 因此,根据本发明的制造方法与根据制造薄膜后进行拉伸加工所需的PLA压电材料相比,非常简单。 此外,与PLA膜相比,当使用通过根据本发明的静电纺丝制造的PLA纳米纤维网时,本发明具有以下优点:PLA静电纺丝纳米纤维网非常薄且柔软; PLA链通过施加于静电纺丝的高直流电压根据电场有效地对准; 并且在使用静电纺丝的一步法中非常容易形成β型螺旋结构。
    • 69. 发明公开
    • 설측 치열교정용 개인 맞춤형 브래킷 및 그 브래킷 제조방법
    • 用于个性化生产方法的铰链支架和支架
    • KR1020140147569A
    • 2014-12-30
    • KR1020130071100
    • 2013-06-20
    • 이종호
    • 이종호
    • A61C7/14A61C7/28
    • A61C7/145B29C33/3842B29C39/025B29C39/10B29C44/02B29K2091/00B29L2031/753
    • The present invention relates to a personalized lingual orthodontic bracket and a method for producing the same. More specifically, the present invention relates to a personalized lingual orthodontic bracket having improved orthodontic effects and a method for producing the same, wherein a lingual orthodontic bracket base is cast, and a personalized bracket for a patient is produced, so that the bracket can be adhered at a correct orthodontic position and is not separated from the teeth of the patient. Individual teeth are cut from a malocclusion model modeled from a patient in order to be re-arranged in a targeted position. A set-up model is produced, and the set-up model is copied with an investment material. The base of a bracket is expanded in the copied set-up model to a resin to prepare a cast. An investment material is injected and filled in the base having the case. The resin is collected, and a dissolved material is cast. The personalized bracket can be precisely adhered on a tooth surface, and the expanded base improves adhesion so that the danger of desorption from the tooth surface is reduced. Even when separated, the bracket can be easily re-bonded, so that orthodontic effects can be improved. Moreover, because a single material is used for a slot, a ligation unit, and a base which are included in an existing personalized bracket, the recommendation of orthodontics that the slot and ligation unit should be strong and the base should be flexible cannot be provided. However, in the present invention, different materials can be used so that the ideal physical characteristics recommended by orthodontics can be provided.
    • 本发明涉及一种个性化的舌形正畸托架及其制造方法。 更具体地说,本发明涉及一种具有改善的矫正效果的个性化舌齿矫正托架及其制造方法,其中铸造了一个舌牙齿矫正托架底座,并且产生了一个用于病人的个性化支架,从而支架可以 粘附在正确的正畸位置,并且不与患者的牙齿分离。 从患者建模的错牙合模型切割单个牙齿,以便重新排列在目标位置。 制作了一个设置模型,并用投资资料复制了设置模型。 支架的基座在复制的设置模型中扩展到树脂以准备铸件。 投资材料注入并填充在具有壳体的基座中。 收集树脂,并浇铸溶解的材料。 个性化支架可以精确地粘附在牙齿表面上,并且膨胀的底座改善粘附性,从而降低了从牙齿表面解吸的危险。 即使分离,支架也可以容易地重新粘合,从而可以提高正畸效果。 此外,由于单个材料用于现有个性化支架中包括的缝隙,结扎单元和底座,所以不能提供槽和结扎单元应该是坚固的并且基部应该是柔性的正畸的建议 。 然而,在本发明中,可以使用不同的材料,从而可以提供由正畸学推荐的理想的物理特性。