摘要:
L'invention concerne un liant pour composition de moulage par injection comprenant : - de 35 à 54% vol. d'une base polymérique, - de 40 à 55 % vol. d'un mélange de cires, - et environ 10% vol. d'un surfactant,
dans lequel la base polymérique contient des copolymères d'éthylène et d'acide méthacrylique ou acrylique, ou des copolymères d'éthylène et d'acétate de vinyle, ou des copolymères d'éthylène comprenant un anhydride maléique ou un mélange de ces copolymères, ainsi que du polyéthylène, du polypropylène et une résine acrylique.
摘要:
Provided is a production process for a nitrogen foamed concrete self-insulating block, comprising the following steps: pre-preparing a foaming liquid filled with nitrogen, pre-preparing a concrete slurry, preparing a foamed concrete slurry, casting moulding, carrying out thermal insulating and demoulding. At the same time, further provided is a foaming device used for the production process for a nitrogen foamed concrete self-insulating block, comprising a foaming agent storage tank, a vacuum foaming tank, a compressed nitrogen pipe, a first transfer pump and a second transfer pump. The block has the advantages of a low heat conductivity coefficient and durability.
摘要:
L'invention concerne un liant pour composition de moulage par injection comprenant : - de 35 à 54% vol. d'une base polymérique, - de 40 à 55 % vol. d'un mélange de cires, - et environ 10% vol. d'un surfactant, dans lequel la base polymérique contient des copolymères d'éthylène et d'acide méthacrylique ou acrylique, ou des copolymères d'éthylène et d'acétate de vinyle, ou des copolymères d'éthylène comprenant un anhydride maléique ou un mélange de ces copolymères, ainsi que du polyéthylène, du polypropylène et une résine acrylique.
摘要:
Non-aqueous hydraulic cement compositions comprise a non-aqueous mixture of a powder composition and a non-aqueous water-miscible liquid. In one embodiment, powder composition is a Brushite or Monetite-forming calcium phosphate powder composition. In another embodiment, the powder composition comprises porous β-tricalcium phosphate (β-TCP) granules and at least one additional calcium phosphate powder. In another embodiment, the powder composition comprises calcium silicate powder. In a further embodiment, the powder composition comprises calcium aluminate powder. In another embodiment, the powder composition is a cement composition and comprises nanopowders having a grain size of less than 1 micron. Hardened cements are formed from such hydraulic cement compositions, and methods of producing hardened cements, kits, and articles of manufacture employ such hydraulic cement compositions.
摘要:
A method of forming a porous ceramic body (60) includes providing a moldable material that includes a ceramic material, a binder material and a filler material comprising carbon nanotubes. The moldable material is then formed into a desired shape of a green ceramic body. The green ceramic body is then thermally treated to remove the binder material and the carbon nanotubes. The thermally treated green ceramic body is then sintered to form the porous ceramic body (60) with elongated nanopores (66).
摘要:
Methods of forming a feedthrough using a mold that defines a cavity when closed and includes one or more cores configured to move in and out of the mold cavity. The methods include injecting non-electrically conductive powder injection molding (PIM) feedstock into the mold cavity to form an insulative body around a portion of each of the cores disposed in the mold cavity, removing each of the cores from the insulative body to form one or more core cavities in the insulative body, injecting electrically conductive PIM feedstock into the core cavities to form one or more conductors in the core cavities, respectively, and sintering the insulative body and the conductors to form the feedthrough.