公开(公告)号：US20250129238A1

公开(公告)日：2025-04-24

申请号：US18718525

申请日：2022-12-13

Applicant: HUTCHINSON

Inventor： Etienne DELEBECQ ,  Florian FANNECHERE

IPC: C08L7/00 ,  C08J3/24 ,  C09K3/10

Abstract: The invention relates to a crosslinkable rubber composition (I) based on an elastomer and to the process for preparing same. The composition (I) comprises a crosslinking system and a thermoplastic phase which is dispersed into particles, having a melting point MP or softening point SP, a glass transition temperature Tg and optionally a crystallisation temperature Tc, the system comprising sulfur when the elastomer is unsaturated and the phase comprises saturated chains, and a peroxide when the elastomer is saturated, the composition (I) comprising the product of: a) a melt reaction by thermomechanical working of the elastomer and other ingredients except for the system, comprising heating the mixture to a maximum temperature Ta that is greater than MP or SP, then b) mechanical working of the mixture obtained, with addition of the system. The particles comprise filaments or fibrils, the temperature of the mixture during b) being temporarily greater than Tc when the phase is crystalline, or than Tg when it is amorphous.

公开(公告)号：US20170022345A1

公开(公告)日：2017-01-26

申请号：US15302431

申请日：2014-04-11

Applicant: HUTCHINSON

Inventor： Bruno DUFOUR ,  Benjamin SWOBODA ,  Cedric HUILLET ,  Florian FANNECHERE ,  Nadine POUPA

IPC: C08J9/28 ,  C08J9/00 ,  F16L59/02 ,  B01J13/00

CPC classification number: C08J9/28 ,  B01J13/0091 ,  C08J9/0061 ,  C08J2205/026 ,  C08J2361/04 ,  C08J2361/12 ,  C08J2479/02 ,  F16L59/028

Abstract: The invention relates to a process for preparing a gelled, dried composition forming a monolithic aerogel with a heat conductivity of less than or equal to 40 mW·m−1·K−1 and derived from a resin of polyhydroxybenzene(s) and formaldehyde(s), to this aerogel composition and to the use thereof. This process comprises: a) polymerization in an aqueous solvent of said polyhydroxybenzene(s) and formaldehyde(s) in the presence of an acidic or basic catalyst, to obtain a solution based on the resin, b) gelation of the solution obtained in a) to obtain a gel of the resin, and c) drying of the gel to obtain a dried gel. According to the invention, step a) is performed in the presence of a cationic polyelectrolyte dissolved in this solvent, and the process also comprises a step d) of heat treatment under inert gas of the dried gel obtained in step c) at temperatures of between 150° C. and 500° C. to obtain the non-pyrolyzed aerogel whose heat conductivity is substantially unchanged, even after exposure to a humid atmosphere.

Abstract translation: 根据本发明，步骤a）在溶解在该溶剂中的阳离子聚电解质的存在下进行，并且该方法还包括步骤d）在步骤c）中获得的干燥凝胶的惰性气体下，在 150℃和500℃，以获得即使在暴露于潮湿气氛之后其导热性基本上不变的非热解气凝胶。