Foamed rubber structure and method of making the same

C - Chemistry – Metallurgy – 08 – J

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08J 9/32 (2006.01) C08L 21/00 (2006.01)

Patent

CA 2398803

A foamed rubber having a plurality of microvoids comprising microspheres incorporated therein characterised in that the microspheres are expanded during heating and vulcanisation of the rubber and the volume fraction of the expanded microspheres is 35-80% in the foamed rubber. The microspheres may be thermoplastic microspheres filled with a volatile liquid. The microspheres may have an unexpanded diameter of 5 to 10 µm and an expanded diameter of between 300 µm and 1000 µm. Also disclosed is a method of manufacture of a rubber comprising the steps of: providing a rubber; incorporating additives; adding and mixing microspheres into the rubber composition; and heating the rubber to effect vulcanisation. The vulcanisation of the rubber may be delayed to allow for expansion of expandable microspheres during heating, such a delay may be achieved by adding a delayed action accelerator or a retarder to the rubber.

Caoutchouc mousse ayant une pluralité de microvides, comprenant des microsphères incorporées, caractérisé en ce que les microsphères sont expansées au cours du chauffage et de la vulcanisation du caoutchouc, et en ce que la fraction volumique des microsphères expansées est de 35 à 80 % du caoutchouc mousse. Les microsphères peuvent être des microsphères thermoplastiques remplies d'un liquide volatil. Les microsphères peuvent présenter, en non expansion, un diamètre de 5 à 10 mu m et, en expansion, un diamètre compris entre 300 mu m et 1000 mu m. L'invention concerne également un procédé de fabrication d'un caoutchouc consistant à préparer un caoutchouc, à y incorporer des adjuvants, à ajouter et à mélanger des microsphères dans la composition de caoutchouc, puis à chauffer le caoutchouc en vue d'effectuer la vulcanisation. La vulcanisation du caoutchouc peut être retardée pour permettre l'expansion des microsphères expansibles au cours du chauffage, cet effet retard pouvant être obtenu par addition au caoutchouc d'un accélérateur d'effet retard ou d'un agent retardateur.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Foamed rubber structure and method of making the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foamed rubber structure and method of making the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foamed rubber structure and method of making the same will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1354245

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.