申请人:UNION CARBIDE CORPORATION
公开号:EP0163865A1
公开(公告)日:1985-12-11
Method of and apparatus for making a shaped cross- linked extruded polymeric product by extruding compacted, melted polymer, e.g., polyethylene, into a mixer (18) formed on or fitted to the discharge end of an extruder, injecting proportionate amounts of a mixture of compounding ingredients including olefinically unsaturated hydrolyzable silane, free-radical generator and, preferably, a silanol condensation catalyst into the compacted, melted polymer. The polymer and compounding ingredients are blended in the mixer (18) until the silane is grafted to said polymer, and the resulting grafted polymer mixed with the silanol condensation catalyst is extruded through a die to form the product of the required final shape. The resulting product is subjected to the action of H20 until the grafted polymer is cross- linked.
用于制造异型交联挤出聚合物产品的方法和设备,其方法是将压实熔化的聚合物(如聚乙烯)挤入在挤出机出料端上形成或安装的混合器(18)中,按比例向压实熔化的聚合物中注入一定量的混合配料,包括烯烃不饱和可水解硅烷、自由基发生器和最好是硅烷醇缩合催化剂。聚合物和配料在混合器(18)中混合,直到硅烷接枝到所述聚合物上,然后通过模头挤出与硅烷醇缩合催化剂混合的接枝聚合物,形成所需最终形状的产品。将得到的产品置于 H20 的作用下,直到接枝聚合物发生交联。