Rubber structure and method of making the same

Foamed rubber structure and method of making the same

Foamed rubber structure and method of making the same

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.

Foamed rubber structure and method of making the same

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 νm and an expanded diameter of between 300 νm and 1000 νm. 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.

Foamed rubber structure and method of making the same

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 .mu.m and an expanded diameter of between 300 .mu.m and 1000 .mu.m. 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, su ch a delay may be achieved by adding a delayed action accelerator or a retarder to the rubber.

Foamed rubber structure and method of making the same

A foamed rubber having a plurality of microvoids comprising mticrospheres incorporated therein characterized in that the microspheres are expanded during heating and vulcanization 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 mum and an expanded di ameter of between 300 mum and 1000 mum. 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 vulcanization. The vulcanization 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.

Foamed rubber structure and method of making the same

A foamed rubber having a plurality of microvoids comprising mticrospheres incorporated therein characterized in that the microspheres are expanded during heating and vulcanization 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 mum and an expanded di ameter of between 300 mum and 1000 mum. 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 vulcanization. The vulcanization 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.

Anvendelse av en skumgummi som har flere mikrohulrom

En skumgummi som har flere mikrohulrom som inneholder innarbeidete mikrokuler, kjennetegnet ved at mikrokulene er utvidet under oppvarming og vulkanisering av gummien og volumandelen av de utvidede mikrokulene er 35-80% i skumgummien. Mikrokulene kan være termoplastiske mikrokuler fylt med en flyktig væske. Mikrokulene kan ha en utvidet diameter på 5 til 10 u.m og en utvidet diameter på mellom 300 u.m og 1000 u.m. Det beskrives også en fremgangsmåte for fremstilling av en gummi, og som omfatter trinnene: Å sørge for en gummi, innarbeiding av additiver, å sette til og blande inn mikrokuler i gummikomposisjonen, og oppvarming av gummien for å bevirke vulkanisering. Vulkaniseringen av gummien kan forsinkes for å tillate utvidelse av utvidbare mikrokuler under oppvarming, og en slik forsinkelse kan oppnås ved å tilsette en akselerator med forsinket virkning eller en forsinker til gummien.

Verwendung einer geschäumten gummistruktur