Composite resin
View Patent ↗The invention relates to a composite comprising a thermosetting resin with a hardness of at least 55 Shore D, wherein the resin essentially consists of an ethylene α-olefin copolymer with a density of less than 880 kg/m3, which resin is crosslinked to a degree such that the volume swelling measured in decaline after 64 hours at 23° C. is less than 50% by volume on the composite and the composite contains at least 40% by volume of a reinforcing filler, wherein the vol % of the filler is related to the volume of the resin. The composite according to the invention is an excellent isolator when at least 100 phr cork are present in the composite. A composite according to the invention can be made by crosslinking of the copolymer in the presence of a high amount of peroxide in the presence of at least 40% by volume on the resin of a filler.
1. A foamed composite comprising a thermosetting resin with a hardness of at least 55 Shore D, characterized in that the resin essentially consists of an ethylene α-olefin copolymer with a density of less than 880 kg/m 3 , wherein the resin is crosslinked to a degree so as to exhibit a volume swelling measured in decaline after 64 hours at 23° C. which is less than 50% by volume on the composite, wherein the composite contains at least 40% by volume, based on the volume of the resin, of a reinforcing filler, and wherein the resin exhibits a foam density of between 200 and 800 kg/m 3 .
2. The foamed composite according to claim 1 , wherein the resin further comprises a coagent.
3. The foamed composite according to claim 1 , wherein the copolymer further comprises a non-conjugated polyene, preferably 5-ethyliden-2-norbornene.
4. The foamed composite according to claim 1 , wherein the filler has a density of less than 1100 kg/m 3 .
5. The foamed composite according to claim 1 , further comprising a compatibaliser.
6. The foamed composite according to claim 5 , further comprising at least 100 phr of cork.