公开(公告)号：US10207435B2

公开(公告)日：2019-02-19

申请号：US15321845

申请日：2015-06-25

申请人： Kay Bernhard ,  Ina Liebl ,  Tim Denk ,  Florian Becker ,  Thomas Richter

发明人： Kay Bernhard ,  Ina Liebl ,  Tim Denk ,  Florian Becker ,  Thomas Richter

IPC分类号： B29C44/14 ,  B29C44/34 ,  B29C44/44 ,  C08J9/04 ,  C08J9/232 ,  B32B5/24 ,  B32B7/12 ,  B32B15/04 ,  B32B15/18 ,  B29K33/00 ,  B29L31/30

摘要： The invention relates to a process for the production of mold-foamed poly(meth)acrylimide (P(M)I) cores, in particular of polymethacrylimide (PMI) cores, which can be used by way of example in automobile construction or aircraft construction. A feature of this process is that polymer granules or polymer powder preheated under pressure are moreover charged under pressure to a compression mold where they are foamed with depressurization. In particular, a feature of the process is that it optionally uses a preferably two-shell compression mold for the heating and also for the cooling of the granules and, respectively, the rigid foam core formed therefrom.

公开(公告)号：US10343314B2

公开(公告)日：2019-07-09

申请号：US15100538

申请日：2014-12-03

申请人： Kay Bernhard ,  Ina Liebl ,  Denis Holleyn ,  Christoph Seipel

发明人： Kay Bernhard ,  Ina Liebl ,  Denis Holleyn ,  Christoph Seipel

IPC分类号： B29C44/34 ,  C08J9/04 ,  C08J9/16 ,  C08J9/20 ,  C08J9/22 ,  C08J9/232 ,  B29B9/12 ,  B29C35/08 ,  B29C44/02 ,  B29C44/38 ,  C08J3/28 ,  C08J9/224 ,  C08J9/228 ,  B29K79/00 ,  B29K105/04

摘要： The invention relates to a process for the production of prefoamed poly(meth)acrylimide (P(M)I) particles which can be further processed to give foam mouldings or composites. A feature of this process is that a polymer granulate is first heated and thus prefoamed in an apparatus by means of IR radiation of a wavelength suitable for this purpose. Said granulate can be further processed in subsequent steps, e.g. in a press mould with foaming to give a moulding or a composite workpiece with foam core.