Nanoporous polymeric foam having high cell density without nanofiller
    1.
    发明授权
    Nanoporous polymeric foam having high cell density without nanofiller 有权
    具有高电池密度的纳米聚合物泡沫,无纳米填料

    公开(公告)号:US09187611B2

    公开(公告)日:2015-11-17

    申请号:US13578092

    申请日:2011-02-23

    IPC分类号: C08J9/12 C08J9/00

    摘要: A polymeric foam has a thermoplastic polymer matrix defining multiple cells, the foam characterized by: (a) the polymer matrix having greater than 50 weight-percent copolymer containing at least two different monomers at least one of which is a methacrylate monomer, each monomer having a solubility parameter lower than 20 (megaPascals)0.5 and a chemical composition where twice the mass fraction of oxygen plus the mass fraction of nitrogen, fluorine and silicon is greater than 0.2; wherein the monomers comprise at least 90 weight-percent of all monomers in the copolymer; (b) at least one of the following: (i) a nucleation site density of at least 3×1014 effective nucleation sites per cubic centimeter of foamable polymer composition; (ii) an average cell size of 300 nanometer or less; (c) a porosity percentage greater than 30%; (d) an absence of nano-sized nucleating additive; and (e) a thickness of at least one millimeter.

    摘要翻译: 聚合物泡沫具有限定多个细胞的热塑性聚合物基质,泡沫的特征在于:(a)聚合物基质具有大于50重量%的共聚物,其含有至少两个不同的单体,其中至少一个是甲基丙烯酸酯单体,每个单体具有 溶解度参数低于20(兆帕)和化学组成,其中氧质量分数加上氮,氟和硅质量分数的两倍大于0.2; 其中所述单体包含所述共聚物中所有单体的至少90重量% (b)以下至少之一:(i)成核位点密度为每立方厘米可发泡聚合物组合物至少3×1014个有效成核位点; (ii)平均泡孔尺寸为300纳米以下; (c)孔隙率大于30%; (d)不存在纳米尺寸的成核添加剂; 和(e)至少一毫米的厚度。

    NANOPOROUS POLYMERIC FOAM HAVING HIGH CELL DENSITY WITHOUT NANOFILLER
    2.
    发明申请
    NANOPOROUS POLYMERIC FOAM HAVING HIGH CELL DENSITY WITHOUT NANOFILLER 有权
    具有无纳米纤维素的高密度聚合物的纳米聚合物泡沫

    公开(公告)号:US20120321873A1

    公开(公告)日:2012-12-20

    申请号:US13578092

    申请日:2011-02-23

    IPC分类号: C08J9/02 B29C44/08 B29C47/00

    摘要: A polymeric foam has a thermoplastic polymer matrix defining multiple cells, the foam characterized by: (a) the polymer matrix having greater than 50 weight-percent copolymer containing at least two different monomers at least one of which is a methacrylate monomer, each monomer having a solubility parameter lower than 20 (megaPascals)0.5 and a chemical composition where twice the mass fraction of oxygen plus the mass fraction of nitrogen, fluorine and silicon is greater than 0.2; wherein the monomers comprise at least 90 weight-percent of all monomers in the copolymer; (b) at least one of the following: (i) a nucleation site density of at least 3×1014 effective nucleation sites per cubic centimeter of foamable polymer composition; (ii) an average cell size of 300 nanometer or less; (c) a porosity percentage greater than 30%; (d) an absence of nano-sized nucleating additive; and (e) a thickness of at least one millimeter.

    摘要翻译: 聚合物泡沫具有限定多个细胞的热塑性聚合物基质,泡沫的特征在于:(a)聚合物基质具有大于50重量%的共聚物,其含有至少两个不同的单体,其中至少一个是甲基丙烯酸酯单体,每个单体具有 溶解度参数低于20(兆帕)和化学组成,其中氧质量分数加上氮,氟和硅质量分数的两倍大于0.2; 其中所述单体包含所述共聚物中所有单体的至少90重量% (b)以下至少之一:(i)成核位点密度为每立方厘米可发泡聚合物组合物至少3×1014个有效成核位点; (ii)平均泡孔尺寸为300纳米以下; (c)孔隙率大于30%; (d)不存在纳米尺寸的成核添加剂; 和(e)至少一毫米的厚度。

    NANOPOROUS POLYMERIC FOAM HAVING HIGH POROSITY
    4.
    发明申请
    NANOPOROUS POLYMERIC FOAM HAVING HIGH POROSITY 有权
    具有高孔隙度的纳米聚合物泡沫

    公开(公告)号:US20120225272A1

    公开(公告)日:2012-09-06

    申请号:US13504561

    申请日:2010-11-01

    IPC分类号: C08L33/12 C08J9/00 B82Y30/00

    摘要: Prepare a polymeric foam article having a thermoplastic polymer matrix defining multiple cells therein, wherein the polymeric foam article has the following characteristics: (a) the thermoplastic polymer matrix contains dispersed within it nano-sized nucleating additive particles that have at least two orthogonal dimensions that are less than 30 nanometers in length; (b) possesses at least one of the following two characteristics: (i) has an effective nucleation site density of at least 3×1014 sites per cubic centimeter of pre-foamed material; and (ii) has an average cell size of 300 nanometers or less; and (c) has a porosity percentage of more than 50 percent by rapidly expanding at a foaming temperature a foamable polymer composition containing the nucleating additive and a blowing agent containing at least one of carbon dioxide, nitrogen and argon.

    摘要翻译: 制备具有在其中限定多个细胞的热塑性聚合物基质的聚合物泡沫制品,其中聚合物泡沫制品具有以下特征:(a)热塑性聚合物基质在其内分散有至少两个正交尺寸的纳米尺寸的成核添加剂颗粒, 长度小于30纳米; (b)具有以下两个特征中的至少一个:(i)有效成核位点密度为每立方厘米预发泡材料至少3×1014个位点; 和(ii)具有300纳米或更小的平均泡孔尺寸; 和(c)通过在发泡温度下快速膨胀含有所述成核添加剂的发泡性聚合物组合物和含有二氧化碳,氮和氩中的至少一种的发泡剂,具有大于50%的孔隙率。

    Aligned Carbon Nanotubes And Method For Construction Thereof
    6.
    发明申请
    Aligned Carbon Nanotubes And Method For Construction Thereof 审中-公开
    对称碳纳米管及其构造方法

    公开(公告)号:US20080090183A1

    公开(公告)日:2008-04-17

    申请号:US11577621

    申请日:2005-10-22

    IPC分类号: G03F7/40 C01B31/00

    摘要: Aligned carbon nanotubes and composites for electrical interconnect and thermal interface materials are provided. In one preferred embodiment, an aligned carbon nanotube device comprises a substrate and a plurality of carbon nanotubes having a substantially vertical profile. The substantially vertical carbon nanotubes are coupled to the substrate. In another preferred embodiment, a carbon nanotube production method comprises depositing a catalyst on a substrate and flowing at least one of argon, hydrogen, and ethylene over the catalyst for a predetermined time at a predetermined temperature to produce a carbon nanotube. This production method enables production of high purity carbon nanotubes and also enables precise placement of carbon nanotubes on a substrate. Other embodiments are also claimed and described.

    摘要翻译: 提供了用于电互连和热界面材料的对准碳纳米管和复合材料。 在一个优选实施例中,对准的碳纳米管装置包括基底和具有基本垂直轮廓的多个碳纳米管。 基本垂直的碳纳米管与基底相连。 在另一个优选的实施方案中,碳纳米管的制备方法包括在衬底上沉积催化剂并在氩气,氢气和乙烯中的至少一种在预定温度下在催化剂上流动预定时间以产生碳纳米管。 该制造方法能够生产高纯度碳纳米管,并且还能够将碳纳米管精确放置在基板上。 还要求保护和描述其它实施例。