PTC compositions based on PVDF and their applications for self-regulated heating systems
    23.
    发明申请
    PTC compositions based on PVDF and their applications for self-regulated heating systems 审中-公开
    基于PVDF的PTC组合物及其在自调节加热系统中的应用

    公开(公告)号:US20050035334A1

    公开(公告)日:2005-02-17

    申请号:US10902545

    申请日:2004-07-29

    IPC分类号: H01B1/00

    摘要: The present invention relates to a PTC composition comprising, by weight, the total being 100%: A) 40 to 80% of PVDF; B) 0 to 40% (advantageously 10 to 40%) of an acrylic or styrene polymer; C) 0 to 40% of an epoxy resin; D) 0 to 60% of at least one metal oxide; E) 0 to 25% of a carbonaceous conductive filler D+E being equal to at least 10%. To prepare the composition of the invention, the various constituents are blended in such a way that (A) is in the melt state, then the product obtained is extruded, moulded or injection-moulded or else deposited on a substrate. Once the composition has been converted into an article, for example into a sheet or bar, it is provided with at least two electrodes that serve as the power lead-in and return, respectively. The composition may also be placed between two conducting plates that serve as the power lead-in and return, respectively.

    摘要翻译: 本发明涉及一种PTC组合物,其按重量计包含100%的总重量:A)40-80%的PVDF; B)0至40%(有利地10至40%)丙烯酸或苯乙烯聚合物; C)0〜40%的环氧树脂; D)0〜60%的至少一种金属氧化物; E)0-25%的碳质导电填料D + E等于至少10%。 为了制备本发明的组合物,各种组分以(A)处于熔融状态的方式共混,然后将所得产物挤出,模制或注塑或沉积在基材上。 一旦组合物已经被转化成物品,例如,被转化成片或条,则它被提供有至少两个用作电力引入和返回的电极。 组合物也可以放置在两个导电板之间,这两个导电板分别作为电源引入和返回。