A kind of oil resisting rubber
Technical field
The invention belongs to rubber technology field, specifically a kind of oil resisting rubber.
Background technology
The piston seal that is applied to lubricate, works in hydraulic efficiency oil medium has certain requirement to its oil resistant, high thermal resistance.
FFKM is high temperature resistant in current all elaxtic seals, chemical solvent resistance energy and the best elastomeric material of high-cleanness characteristic, chemical-resistant resistance and corrosive medium (resistance to strong acid, highly basic, ethers, ketone, ester class, nitrogenous compound, hydrocarbon class, alcohols, aldehydes, oil, steam class, the corrosion of the 1600 number of chemical products such as amino-complex), heatproof can reach 327 ℃, in semi-conductor industry, chemical treatment technology, automotive industry, petroleum industry, pharmaceutical industry, electronic product, solvent equipment, nuclear industry, space equipment and other thermomechanicallies etc., in harsh environment, give full play to the effect of its brilliance.
But because viton is expensive, cause cost higher.
Summary of the invention
The object of the present invention is to provide hard oil resisting rubber.
Object of the present invention can be achieved through the following technical solutions:
A kind of oil resisting rubber, it is characterized in that, by weight, composed of the following components: viton 40-60 part, natural rubber 20-30 part, paracril 10-15 part, carbon black 20-40 part, white carbon black 15-30 part, anti-aging agent RD 0.5-2 part, antioxidant 4010NA 1-2 part, paraffin 2-4 part, light calcium carbonate 25-35 part, stearic acid 2-3 part, zinc oxide 3-5 part, magnesium oxide 5-10 part, 2,2'-dithio-bis-benzothiazole 1-2 part, coumarone 3-4 part, vulcanizing agent 0.2-0.8 part.
The present invention by weight, composed of the following components: 50 parts of viton, 25 parts of natural rubbers, 12 parts of paracrils, 30 parts of carbon blacks, 22 parts of white carbon blacks, 1.2 parts of anti-aging agent RDs, 1.5 parts of antioxidant 4010NAs, 8 parts, 3 parts, paraffin, 30 parts of light calcium carbonates, 2.5 parts of stearic acid, 4 parts, zinc oxide, magnesium oxide, 2,1.5 parts of 2'-dithio-bis-benzothiazoles, 3.5 parts of coumarones, 0.5 part of vulcanizing agent.
Vulcanizing agent of the present invention is SULPHUR POWDER.
Preparation method of the present invention is same as the prior art.
Beneficial effect of the present invention: oil resisting rubber oil-proofness of the present invention, resistance to air loss, resistance to elevated temperatures are good.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
A kind of oil resisting rubber, by weight, composed of the following components: 50 parts of viton, 25 parts of natural rubbers, 12 parts of paracrils, 30 parts of carbon blacks, 22 parts of white carbon blacks, 1.2 parts of anti-aging agent RDs, 1.5 parts of antioxidant 4010NAs, 8 parts, 3 parts, paraffin, 30 parts of light calcium carbonates, 2.5 parts of stearic acid, 4 parts, zinc oxide, magnesium oxide, 2,1.5 parts of 2'-dithio-bis-benzothiazoles, 3.5 parts of coumarones, 0.5 part of vulcanizing agent.
Embodiment 2
A kind of oil resisting rubber, it is characterized in that, by weight, composed of the following components: 40 parts of viton, 20 parts of natural rubbers, 10 parts of paracrils, 20 parts of carbon blacks, 15 parts of white carbon blacks, 0.5 part of anti-aging agent RD, 1 part of antioxidant 4010NA, 5 parts, 2 parts, paraffin, 25 parts of light calcium carbonates, 2 parts of stearic acid, 3 parts, zinc oxide, magnesium oxide, 2,1 part of 2'-dithio-bis-benzothiazole, 3 parts of coumarones, 0.2 part of vulcanizing agent.
Embodiment 3
A kind of oil resisting rubber, it is characterized in that, by weight, composed of the following components: 60 parts of viton, 30 parts of natural rubbers, 15 parts of paracrils, 40 parts of carbon blacks, 30 parts of white carbon blacks, 2 parts of anti-aging agent RDs, 2 parts of antioxidant 4010NAs, 10 parts, 4 parts, paraffin, 35 parts of light calcium carbonates, 3 parts of stearic acid, 5 parts, zinc oxide, magnesium oxide, 2,2 parts of 2'-dithio-bis-benzothiazoles, 4 parts of coumarones, 0.8 part of vulcanizing agent.
Oil resistance of the present invention detects according to ASTM D 471 standards, and unit is %;
The oil resistance of embodiment 1,2,3 (rate of expansion after oil immersion bubble) is respectively 9%, 9.2%, 9.5%.The ageing-resistant coefficient of embodiment 1,2,3 is 0.72,0.84,0.81.The resistance to air loss of embodiment 1,2,3 is 3.2m
2/ s.Pa, 3.03m
2/ s.Pa, 3.15m
2/ s.Pa.