Abrégé

Disclosed in the present invention is a butadiene rubber-polyurethane elastomer material having ultra-low rolling resistance and a preparation method therefor. The elastomer material is obtained by polymerization and radiation of a soft segment and a hard segment at a mass ratio of 100: (20-110), the soft segment being hydroxyl-terminated polybutadiene rubber, and the hard segment comprising isocyanate, small molecular polyol chain extender, and a cross-linking agent. According to the irradiation-modified butadiene rubber-polyurethane elastomer prepared in the present invention, on the basis of maintaining high strength, high toughness, environmental friendliness, high abrasion resistance, oil resistance, chemical resistance, good flexing resistance, and excellent dynamic properties of a conventional polyurethane elastomer material, coordination between macromolecules is better, the rolling resistance is further reduced, and a new idea is provided for the next generation of a fuel-saving tire having ultra-low rolling resistance.

Classes IPC  ?

• C08G 18/69 - Polymères de diènes conjugués
• C08G 18/10 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle
• C08G 18/32 - Composés polyhydroxylésPolyaminesHydroxyamines
• C08G 18/65 - Composés à bas poids moléculaire contenant un hydrogène actif avec des composés à haut poids moléculaire contenant un hydrogène actif
• C08F 236/06 - Butadiène
• C08F 8/30 - Introduction d'atomes d'azote ou de groupes contenant de l'azote
• C08C 19/22 - Incorporation d'atomes d'azote dans la molécule

Abrégé

The present invention discloses a method for preparing high-performance tread rubber through a filler silylation reaction catalyzed in situ by an ionic liquid. The method is as follow: adding a gum rubber, a filler, a silane and an ionic liquid successively into an open mill or an internal mixer for mixing to obtain a rubber compound; high-temperature remilling the rubber compound; adding a vulcanizing package and an anti-aging agent into the remilled rubber compound at room temperature; and vulcanizing the rubber compound to obtain a vulcanized rubber.

Classes IPC  ?

• C08C 4/00 - Traitement du caoutchouc avant la vulcanisation non prévu dans les groupes
• C08K 5/435 - Sulfonamides
• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08L 9/00 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures à diènes conjugués
• B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition
• C08K 3/04 - Carbone
• C08K 3/22 - OxydesHydroxydes de métaux
• C08K 3/34 - Composés contenant du silicium
• C08K 3/36 - Silice
• C08K 5/14 - Peroxydes
• C08K 5/18 - AminesComposés d'ammonium quaternaire avec des groupes amino liés aromatiquement
• C08K 5/3437 - Cycles à six chaînons condensés avec des carbocycles
• C08K 5/5415 - Composés contenant du silicium contenant de l'oxygène contenant au moins une liaison Si—O
• C08K 5/548 - Composés contenant du silicium contenant du soufre
• C08K 5/549 - Composés contenant du silicium contenant du silicium dans un cycle
• B01J 31/02 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques

Abrégé

Disclosed is a method for preparing a high performance tread rubber by a filler silylation reaction catalyzed in-situ by an ionic liquid. The method comprises: sequentially adding a rubber, a filler, a silane and an ionic liquid to an open mill or a mixer and mixing to obtain a mixed rubber; performing high temperature re-milling on the mixed rubber; adding, at room temperature, a vulcanization packet and an aging inhibitor to the re-milled mixed rubber; vulcanizing the mixed rubber, and obtaining a vulcanized rubber. The method of the present invention uses the ionic liquid as a catalyst to silylate the filler surface, thus effectively facilitating dispersion of white carbon black, etc., in the rubber, and improving rubber-filler interface performance, greatly reducing silane usage, greatly improving tread rubber material dynamic performance, reducing rolling resistance and dynamic heat generation, having a simple process without adding an additional processing device and step, and having favorable prospects in the preparation of high performance tires.

Classes IPC  ?

• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08L 9/06 - Copolymères avec le styrène
• C08L 9/00 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures à diènes conjugués
• C08K 5/49 - Composés contenant du phosphore
• C08K 5/55 - Composés contenant du bore
• C08K 5/435 - Sulfonamides

Abrégé

Disclosed are an after-vulcanization stabilizer organic thiosulfate for rubber industry, and especially a preparation method for the organic thiosulfate. According to the preparation method, urea is subjected to a hydrolysis reaction under heating to generate NH3 to adjust the pH value of the reaction solution to an alkaline state, an organic halogenated alkane and a water-soluble inorganic thiosulfate can be subjected to a complete reaction, and generation of thiol compound as a byproduct is inhibited, such that reaction efficiency is effectively improved, the resulting product has high purity, and the preparation process has characteristics of simpleness, easy performing, and low energy consumption.

Classes IPC  ?

• C07C 381/02 - Thiosulfates