US 12,180,355 B2 · Rubber composition, processing method thereof, and braking-resistant liquid product using the same

Abstract

The present invention discloses a rubber composition, a processing method thereof, and also a brake fluid-resistant product using the rubber composition and a production method thereof. The rubber composition comprises, in parts by weight, 100 parts of a rubber matrix; 1.5-8 parts of a crosslinking agent 40-140 parts of a reinforcing filler; and 0-40 parts of a plasticizer, wherein the rubber matrix comprises, based on 100 parts by weight of the rubber matrix, a branched polyethylene with a content represented as A, in which 0<A≤100 parts; an EPM with a content represented as B, in which 0≤B<100 parts; and an EPDM with a content represented as C, in which 0≤C<100 parts. The rubber composition is useful in the production of brake fluid-resistant brake rubber hose and brake rubber diaphragm. The beneficial effect is that since the rubber composition comprises the branched polyethylene, the tear strength of the rubber compound is improved, thereby reducing the probability of tearing of the product during the production process and improving the overall processing performance.

Claims16

Dependent claims

A brake rubber hose, comprising an inner rubber layer, a middle rubber layer, and an outer rubber layer, wherein, the at least one of the inner rubber layer, the middle rubber layer, and the outer rubber layer comprises a rubber compound formed from a rubber composition comprising a rubber matrix and essential components, wherein the rubber matrix comprises, based on 100 parts by weight of the rubber matrix,

a branched polyethylene with a content represented as A, in which 0<A≤100 parts,
an EPM with a content represented as B, in which 0≤B<100 parts, and
an EPDM with a content represented as C, in which 0≤C<100 parts;
and based on 100 parts by weight of the rubber matrix, the essential components comprise 1.5 to 8 parts of a crosslinking agent, 40 to 140 parts of a reinforcing filler, and 0-40 parts of a plasticizer;
wherein the branched polyethylene is an ethylene homopolymer having a branching degree of from about 60 to 99 branches/1000 carbon atoms, a weight average molecular weight of from 66,000 to 518,000, and a Mooney viscosity ML (1+4) at 125° C. of from 6 to 102.

2 more elements

A brake rubber diaphragm comprising a rubber compound formed from a rubber composition comprising a rubber matrix and essential components, wherein the rubber matrix comprises, based on 100 parts by weight of the rubber matrix,

a branched polyethylene with a content represented as A, in which 0<A<100 parts,
an EPM with a content represented as B, in which 0<B<100 parts, and
an EPDM with a content represented as C, in which 0<C<100 parts;
and based on 100 parts by weight of the rubber matrix, the essential components comprise 1.5 to 8 parts of a crosslinking agent, 40 to 140 parts of a reinforcing filler, and 0-40 parts of a plasticizer;
wherein the branched polyethylene is an ethylene homopolymer having a branching degree of from about 60 to 99 branches/1000 carbon atoms, a weight average molecular weight of from 66,000 to 518,000, and a Mooney viscosity ML (1+4) at 125° C. of from 6 to 102.

2 more elements

Dependencies are inferred from the claim text.

Rubber composition, processing method thereof, and braking-resistant liquid product using the same

Life of this patent

Rubber composition, processing method thereof, and braking-resistant liquid product using the same

Life of this patent

Abstract

Claims16