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公开(公告)号:KR100689866B1
公开(公告)日:2007-03-09
申请号:KR1020060022071
申请日:2006-03-09
Applicant: 인하대학교 산학협력단
CPC classification number: C08G61/12 , B82B3/0009 , B82B3/0061 , C01B32/168
Abstract: A method for producing carbon nanotubes grafted with a vinyl polymer is provided to minimize degradation of physical properties of carbon nanotubes, including a drop in aspect ratio, to allow uniform dispersion of carbon nanotubes in a polymer matrix without aggregation of carbon nanotubes, and to improve the interfacial adhesion between carbon nanotubes and a polymer. The method for producing carbon nanotubes grafted with a vinyl polymer comprises the steps of: (a) oxidizing carbon nanotubes in the presence of a strong acid to obtain carboxyl- or hydroxyl-functionalized carbon nanotubes; (b) performing an urethane reaction between the carboxyl- or hydroxyl-functionalized carbon nanotubes and a diisocyanate compound to introduce isocyanate groups into both terminals of the carbon nanotubes; (c) reacting the carbon nanotubes having isocyanate groups with an acryl amide or hydroxyacrylate monomer having a vinyl group to obtain vinyl-functionalized carbon nanotubes represented by a formula 1; and (d) polymerizing the vinyl-functionalized carbon nanotubes represented by the formula 1 with vinyl monomers to form vinyl polymers grown on the surfaces of the carbon nanotubes. In formula 1, each of M and M' is a monomer containing a vinyl group double bond, with the proviso that M and M' are the same or different.
Abstract translation: 提供了用乙烯基聚合物接枝的碳纳米管的制造方法,以使碳纳米管的物理性质降低,包括长宽比的降低,使碳纳米管均匀分散在聚合物基体中而不会聚集碳纳米管,并且改善 碳纳米管和聚合物之间的界面粘合。 用乙烯基聚合物接枝碳纳米管的方法包括以下步骤:(a)在强酸存在下氧化碳纳米管,得到羧基或羟基官能化碳纳米管; (b)在羧基或羟基官能化的碳纳米管与二异氰酸酯化合物之间进行氨基甲酸酯反应,将异氰酸酯基引入到碳纳米管的两端; (c)使具有异氰酸酯基团的碳纳米管与丙烯酰胺或具有乙烯基的羟基丙烯酸酯单体反应得到由式1表示的乙烯基官能化碳纳米管; 和(d)将由式1表示的乙烯基官能化碳纳米管与乙烯基单体聚合以形成在碳纳米管表面上生长的乙烯基聚合物。 在式1中,M和M'各自是含有乙烯基双键的单体,条件是M和M'相同或不同。
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公开(公告)号:KR100597119B1
公开(公告)日:2006-07-04
申请号:KR1020050060419
申请日:2005-07-05
Applicant: 인하대학교 산학협력단
Abstract: 본 발명은 분산중합법으로 입도분포가 균일한 비닐계 고분자 입자를 제조하는 방법에 관한 것으로서, 더욱 상세하게는 양쪽성 개시제를 사용하여 입체안정제의 사용량을 줄이면서도 안정하고 입자의 분포가 균일한 구형의 비닐계 고분자 비드를 제조하는 방법에 관한 것이다. 본 발명에서는, 비닐계 단량체, 중합 개시제, 입체안정제를 분산매에 용해시켜 분산중합으로 비닐계 고분자 비드를 제조하는 방법에 있어서, 상기 중합개시제로 양쪽성 중합 개시제를 사용하고, 상기 입체안정제를 단량체 100 중량부에 대하여 1∼5 중량부로 사용하여, 입자 크기 분포도(CV)가 5% 이하이고 입자크기가 0.1∼20 ㎛인 구(球) 형태의 고분자 비드를 수득하는 것을 특징으로 하는 비닐계 고분자 비드의 제조방법이 제공된다. 본 발명에 따르면, 단량체 100중량부에 대하여 종래 10∼15 중량부로 사용되던 입체안정제의 사용량을 1∼5 중량부로 크게 줄이면서도 입자 크기분포도 5% 이하의 균일하고 안정된 입자를 얻을 수 있다.
양쪽성 개시제, 입체 안정제, 분산중합, 비닐계 고분자 입자Abstract translation: 本发明涉及一种方法,用于生产具有在聚合分散体中的粒度分布均匀的乙烯基系聚合物颗粒,更具体地,两性一个稳定的,但通过使用引发剂降低了空间稳定剂和球形的颗粒的均匀分布的量 基于本发明的聚合物珠粒。 在本发明中,乙烯基单体,聚合引发剂,通过空间稳定剂的分散介质中溶解用于制备基于乙烯基的聚合物珠的分散聚合,使用两性聚合引发剂作为引发剂的聚合,为对空间稳定剂100的单体的方法 与1至5份基于重量的份重量,粒度分布(CV)是一种基于乙烯基的聚合物珠,其特征在于,以获得5%或以下,0.1〜20㎛球体的聚合物珠(球)形式的颗粒尺寸 提供。 根据本发明,当基于所重量颗粒的1〜5重量份,可以得到均匀的和不大于5%的稳定的颗粒尺寸分布的单体的使用100份空间稳定剂(重量)减少大大常规10至15份的量。
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公开(公告)号:KR100836511B1
公开(公告)日:2008-06-09
申请号:KR1020070021053
申请日:2007-03-02
Applicant: 인하대학교 산학협력단
CPC classification number: B82B3/0009 , B82Y40/00 , C01B32/168 , C01B32/174
Abstract: A method for preparing a silica/carbon nanotube composite material is provided to facilitate growth of a silica/carbon nanotube composite material, to allow control of the degree of silica synthesis while minimizing the surface structure of carbon nanotubes, and to obtain a material useful in advanced IT industries. A method for preparing a silica/carbon nanotube composite material comprises the steps of: (a) introducing hydroxyl group to carbon nanotubes; (b) introducing a silane coupling agent having a terminal amine group to the carbon nanotubes having hydroxyl group introduced thereto to obtain carbon nanotubes to which the silane coupling agent having a terminal amine group is introduced as represented by a formula 1; and (c) preparing silica from the carbon nanotubes having the silane coupling agent introduced thereto through a sol-gel process. In formula 1, X is (CH2)n, n is ranged from 1 to 5, Y is NH2 or NH(CH2)m, m is ranged from 1 to 5, and Z is NH2 when Y is NH(CH2)m.
Abstract translation: 提供了制备二氧化硅/碳纳米管复合材料的方法,以促进二氧化硅/碳纳米管复合材料的生长,以便在最小化碳纳米管的表面结构的同时控制二氧化硅合成的程度,并获得有用的材料 先进的IT行业。 制备二氧化硅/碳纳米管复合材料的方法包括以下步骤:(a)将羟基引入碳纳米管; (b)将引入具有羟基的碳纳米管的具有末端胺基的硅烷偶联剂引入到具有式1所示的引入了具有末端胺基的硅烷偶联剂的碳纳米管; 和(c)通过溶胶 - 凝胶法从其中引入硅烷偶联剂的碳纳米管制备二氧化硅。 在式1中,X为(CH 2)n,n为1至5,Y为NH 2或NH(CH 2)m,m为1至5,当Y为NH(CH 2)m时Z为NH 2)。
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