摘要:
Methods for controlling and improving the conductivity of thermoplastic polymer composites containing CNTs or even for making these materials conductive when they are initially insulating. For example, methods including either injection moulding or extrusion at a temperature above the melting temperature of the polymer, or a subsequent heat treatment step of said composite obtained by injection moulding or extrusion.
摘要:
The invention relates to methods for controlling and improving the conductivity of thermoplastic polymer composites containing CNTs or even for making these materials conductive when they are initially insulating.The present invention relates to a conductive composite, based on a thermoplastic polymer and on carbon nanotubes (CNTs), and the methods for preparing said conductive composite, the methods comprising either injection moulding or extrusion at a temperature above the melting temperature of the polymer, or a subsequent heat treatment step of said composite obtained by injection moulding or extrusion.
摘要:
The invention relates to a polymer material comprising 99 to 20 parts by weight of polymer(s), 0.1 to 80 parts by weight of carbon nanotubes, and 0.05 to 80 parts by weight of at least one type of dispersant selected from A-B-C, B-C and/or C-B-C block copolymers, wherein each block is bonded to the other by means of a covalent bond, C is a chemical and/or physical interaction with the polymer material and in preferably is miscible therwith, B is not miscible with the polymer material and with the block B and the glass transition temperature thereof. Tg is less than the polymer material use temperature, A is not miscible with the polymer material and with the blocks B and the block C and the Tg or the fusion temperature Tf is greater than the Tg of B.
摘要翻译:本发明涉及一种包含99至20重量份聚合物,0.1-80重量份碳纳米管和0.05-80重量份选自ABC,BC和 /或CBC嵌段共聚物,其中每个嵌段通过共价键结合到另一个嵌段,C是与聚合物材料的化学和/或物理相互作用,并且优选是可混溶的,B不与聚合物材料混溶, 具有块B及其玻璃化转变温度。 T g小于聚合物材料使用温度,A不与聚合物材料混合,并且与块B和块C以及熔融温度 Tf大于B的T SUB>。
摘要:
Device for the measurement of viscoelasticity of products, and in particular those with low viscosity. It is of a type including a male cupel equipped with a cylindrical separating partition which can be introduced into an annular chamber arranged in a body of a female cupel and receiving the product to be measured, and a drive mechanism for movement around an axis of rotation of one of the cupels in relation to the other, and characterized in that it has, in addition, the means to close in an impervious manner the annular chamber.