Abrégé

The present invention relates to the technical field of rubber compounding and vulcanization, and disclosed thereby is a fluororubber oil sealing composition. The fluororubber oil sealing composition is prepared by means of the following components in parts by weight: a binary copolymerized fluororubber (60-80 parts), a ternary copolymerized fluororubber (20-40 parts), calcium hydroxide (2-4 parts), magnesium oxide (5-15 parts), palm wax (1-1.5 parts), COSTA1000 (1-8 parts), calcium silicate (0-30 parts), N990 (0-30 parts), bisphenol AF (1.2-1.6 parts), bisphenol A (0.4-0.8 parts) and BPP (0.4-0.6 parts); the composition greatly reduces the probability of a lip portion of a product tearing during one-time molding due to the poor tearing strength of fluororubber, increases the rate of passes during production and saves costs, while ensuring the product features of obtaining a good compression permanent set and radial sealing force, and granting a long service life in the work of oil sealing.

Classes IPC  ?

• C08L 27/12 - Compositions contenant des homopolymères ou des copolymères de composés possédant un ou plusieurs radicaux aliphatiques non saturés, chacun ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un halogèneCompositions contenant des dérivés de tels polymères non modifiées par un post-traitement chimique contenant du fluor
• C08K 13/02 - Ingrédients organiques et inorganiques
• C08K 3/22 - OxydesHydroxydes de métaux
• C08K 5/136 - Phénols contenant des halogènes
• C08K 5/138 - Phénolates
• C08K 7/00 - Emploi d'ingrédients caractérisés par leur forme

Abrégé

Provided is a nitrile rubber for pneumatic nail gun cushion which is prepared by the following components in parts by weight: 95-105 parts of nitrile rubber, 2-10 parts of vulcanizing agent, 2-8 parts of zinc oxide, 1-5 parts of anti-aging agent, 40-100 parts of carbon black, 0-30 parts of plasticizer and 3-10 parts of aramid short fiber. By adding aramid short fiber to the nitrile rubber, it not only does not delay the vulcanization time, but also significantly increases the tensile strength and modulus of the rubber product, so as to improve the impact resistance of the rubber product. Therefore, the product can adapt more severe shock absorption condition, which can meet the requirements of the high impact-resistant shock absorption of the current pneumatic nail gun.

Classes IPC  ?

• C08L 9/02 - Copolymères avec l'acrylonitrile
• C08L 77/10 - Polyamides dérivés de groupes amino et carboxyle liés aromatiquement soit d'acides aminocarboxyliques, soit de polyamines et d'acides polycarboxyliques
• C08K 13/02 - Ingrédients organiques et inorganiques
• C08K 3/06 - Soufre
• C08K 3/22 - OxydesHydroxydes de métaux
• C08K 3/04 - Carbone
• C08K 5/09 - Acides carboxyliquesLeurs sels métalliquesLeurs anhydrides
• C08K 5/11 - EstersÉthers-esters d'acides polycarboxyliques acycliques
• C08K 5/18 - AminesComposés d'ammonium quaternaire avec des groupes amino liés aromatiquement