Elastomer composites, elastomer blends and methods
AssigneeCabot Corporation
InventorsTing Wang, Meng-Jiao Wang, Steven R. Reznek
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Abstract
Elastomer composites and elastomer blends comprising particulate fillers having selected structure and surface area values are disclosed as well as elastomer composites and elastomer blends having improved properties. Methods of making and using elastomer composites and elastomer blends are also disclosed.
Claims30
An elastomer composite comprising an elastomer and particulate filler dispersed in the elastomer, the particulate filler comprising at least one carbon black having structure and surface area values meeting the equation CDBP≦(BET÷2.9).
An elastomer composite comprising a general purpose rubber and particulate filler dispersed in the general purpose rubber, wherein the particulate filler comprises an amount of at least one carbon black effective in said general purpose rubber to achieve tear strength, as measured by test method ASTM-D624 using Die C, of at least about 160 N/mm.
An elastomer composite comprising an elastomer and particulate filler dispersed in the elastomer, the elastomer composite having
- Shore A hardness, measured in accordance with test method ASTM-D1415, greater than about 65;
- tensile strength, measured in accordance with test method ASTM-D412, greater than 30 megapascals;
- and
- elongation at break, measured in accordance with test method ASTM-D412, of at least about 600%;
- wherein the particulate filler comprises carbon black having structure and surface area values meeting the equation CDBP≦(BET÷2.9).
An elastomer composite comprising a general purpose rubber and particulate filler dispersed in the general purpose rubber, wherein the particulate filler comprises an amount of at least one carbon black effective in said general purpose rubber to achieve:
- Shore A hardness, measured in accordance with test method ASTM-D1415, greater than about 65;
- tensile strength, measured in accordance with test method ASTM-D412, greater than 30 megapascals;
- and
- elongation at break, measured in accordance with test method ASTM-D412, of at least about 600%.
An elastomer blend comprising an elastomer composite blended with at least one elastomer material, the elastomer composite comprising a first elastomer and particulate filler dispersed in the first elastomer, the particulate filler comprising at least one carbon black having structure and surface area values meeting the equation CDBP≦(BET÷2.9)−X.
A method of producing an elastomer composite comprising an elastomer and particulate filler dispersed in the elastomer, the method comprising:
- feeding a continuous flow of first fluid comprising elastomer latex to a mixing zone;
- and
- feeding a continuous flow of second fluid comprising the particulate filler under pressure to the mixing zone to form a mixture, the mixing of the first fluid and the second fluid within the mixing zone being sufficiently energetic to substantially completely coagulate the elastomer latex with the particulate filler;
- the particulate filler comprising at least one carbon black having structure and surface area values meeting the equation CDBP≦(BET÷2.9)−X.
Dependencies are inferred from the claim text.