MACHINABLE THERMALLY INSULATING POLYMERIC FOAM
    12.
    发明申请
    MACHINABLE THERMALLY INSULATING POLYMERIC FOAM 审中-公开
    可机械绝热绝热泡沫

    公开(公告)号:US20130018117A1

    公开(公告)日:2013-01-17

    申请号:US13513599

    申请日:2010-12-02

    IPC分类号: C08J9/14 B29C47/00

    摘要: Provide a foamable polymer composition containing: (i) a thermoplastic polymer matrix and a blowing agent, (a) the thermoplastic polymer matrix containing a styrene-acrylonitrile copolymer having a weight-averaged molecular weight in a range of 90,000 to 150,000 and polymerized acrylonitrile concentration in a range of five to twenty weight-percent relative to total polymer matrix weight; and (ii) a blowing agent containing water, 1,1,1,2-tetrafluouroethane and at least one of difluoromethane and 1,1-dilluoroethane; (b) cooling the foamable polymer composition to a foaming temperature; and (c) extruding the foamable polymer composition and allowing the blowing agent to expand the foamable polymer composition into a polymeric foam having an average vertical cell size in a range of 0.5 millimeters to 1.8 millimeters and a density in a range of 24 to 40 kilograms per cubic meter and a Normalized Roughness Quotient of 3.5 or less in a Milled Surface Test.

    摘要翻译: 提供一种可发泡聚合物组合物,其包含:(i)热塑性聚合物基质和发泡剂,(a)含有重均分子量在90,000至150,000范围内的苯乙烯 - 丙烯腈共聚物的热塑性聚合物基质和聚合丙烯腈浓度 相对于总聚合物基体重量为5至20重量%的范围; 和(ii)含有水,1,1,1,2-四氟乙烷和二氟甲烷和1,1-二氟乙烷中的至少一种的发泡剂; (b)将可发泡聚合物组合物冷却至发泡温度; 和(c)挤出可发泡聚合物组合物并允许发泡剂将可发泡聚合物组合物膨胀成具有0.5毫米至1.8毫米范围内的平均垂直孔尺寸和24至40千克范围内的密度的聚合物泡沫体 每立方米,在铣削表面试验中的归一化粗糙度为3.5以下。

    QUALITY POLYMER FOAM FROM FLUORINATED ALKENE BLOWING AGENTS
    16.
    发明申请
    QUALITY POLYMER FOAM FROM FLUORINATED ALKENE BLOWING AGENTS 有权
    来自氟化铝沸腾剂的质量聚合物泡沫

    公开(公告)号:US20100087555A1

    公开(公告)日:2010-04-08

    申请号:US12527131

    申请日:2008-03-10

    IPC分类号: C08J9/16 C08J9/14

    摘要: Alkenyl aromatic polymer foam comprising a polymer matrix containing one or more polymer and defining a plurality of cells having an average cell size wherein: (a) the alkenyl aromatic polymer foam has: —(i) an average cell size that is in a range of 0.02 and 5 millimeters; —(ii) a density of 64 kilograms per cubic meter or less; —(iii) an open cell content less than 30 percent; and—(iv) a cell size variation of 30% or less; and wherein the foam further comprises one or more fluorinated alkene blowing agent at a concentration of 0.03 moles or more and 0.3 moles or less per 100 grams of polymer foam.

    摘要翻译: 烯烃芳族聚合物泡沫体,其包含含有一种或多种聚合物并且限定多个具有平均泡孔尺寸的泡孔的聚合物基质,其中:(a)链烯基芳族聚合物泡沫体具有:(i)平均泡孔尺寸在 0.02和5毫米; - (ii)每立方米或以下的密度为64公斤; - (iii)开放细胞含量低于30%; 和(iv)30%以下的细胞大小变化; 并且其中所述泡沫体还包含一种或多种浓度为0.03摩尔以上且0.3摩尔或更少每100克聚合物泡沫的氟化烯烃发泡剂。

    Ceramic-metal composite and method to form said composite
    18.
    发明授权
    Ceramic-metal composite and method to form said composite 失效
    陶瓷 - 金属复合材料和形成所述复合材料的方法

    公开(公告)号:US06630247B1

    公开(公告)日:2003-10-07

    申请号:US09921810

    申请日:2001-08-03

    IPC分类号: C22C2100

    摘要: A ceramic-metal composite that is tough and stiff has been prepared and is comprised of an inert ceramic (e.g., alumina) embedded and dispersed in a matrix comprised of a metal (e.g., aluminum), a reactive ceramic (e.g., boron carbide) and a reactive ceramic-metal reaction product (e.g., AlB2, Al4BC, Al3B48C2, AlB12, Al4C3, AlB24C4 or mixtures thereof) wherein grains of the inert ceramic have an average grain size greater than or equal to the average grain size of grains of the reactive ceramic. The ceramic-metal composite may be prepared by forming a mixture comprised of an inert ceramic powder (e.g., alumina) and a reactive ceramic powder (e.g., boron carbide), the inert ceramic powder having an average particle size equal to or greater than the average particle size of the reactive ceramic powder, forming the mixture into a porous body and consolidating the porous body in the presence of a metal (e.g., aluminum) to form the ceramic-metal composite.

    摘要翻译: 已经制备了韧性和刚性的陶瓷 - 金属复合材料,其包括嵌入和分散在由金属(例如铝),反应性陶瓷(例如碳化硼)组成的基体中的惰性陶瓷(例如氧化铝) 和反应性陶瓷 - 金属反应产物(例如,AlB2,Al4BC,Al3B48C2,AlB12,Al4C3,AlB24C4或其混合物),其中惰性陶瓷的晶粒的平均晶粒尺寸大于或等于晶粒的平均晶粒尺寸 活性陶瓷。 陶瓷 - 金属复合材料可以通过形成由惰性陶瓷粉末(例如氧化铝)和反应性陶瓷粉末(例如碳化硼)组成的混合物来制备,惰性陶瓷粉末的平均粒度等于或大于 反应性陶瓷粉末的平均粒度,将混合物形成多孔体,并在金属(例如铝)的存在下固化多孔体以形成陶瓷 - 金属复合材料。