CN103102529A - High-pressure self-packing leather cup rubber for packer and preparation method thereof - Google Patents
High-pressure self-packing leather cup rubber for packer and preparation method thereof Download PDFInfo
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Abstract
The invention discloses high-pressure self-packing leather cup rubber for a packer. The high-pressure self-packing leather cup rubber is prepared from the following raw materials in parts by weight: 30-40 parts of nitrile rubber, 20-30 parts of isoprene rubber, 20-40 parts of ethylene propylene terpolymer 5962 (LANXESS Deutschland), 10-15 parts of fluorosilicone rubber, 3-5 parts of natural rubber, 30-40 parts of high abrasion furnace black N330, 10-15 parts of modified white carbon black, 3-4 parts of antimony trioxide, 8-10 parts of modified wood ash, 4-6 parts of attapulgite, 4-6 parts of meerschaum, 9-11 parts of modified iron tailing slag powder, 0.5-1 part of stearic acid, 0.5-1 part of isocyanate, 0.2-0.4 part of accelerant DM, 0.3-0.6 part of accelerant BZ, 1-2 parts of calcium stearate, 2-4 parts of zinc oxide, 0.2-0.4 part of ferrocene, 1-2 parts of polyethylene wax, 1-2 parts of antioxidant DSTP, 1-2 parts of anti-aging agent, 2-3 parts of coupling agent DL-151 and 16-18 parts of epoxy linseed oil. The rubber disclosed by the invention has excellent ozone resistance, excellent low temperature resistance and heat resistance and is large in operating temperature range and environment-friendly in process, so that the rubber can be used for preparing various packing materials.
Description
Technical field
The present invention relates to the synthetic rubber field, be specifically related to a kind of pkr with high-pressure self-sealing leather cup rubber and preparation method thereof.
Background technology
Rubber cup mainly refers to be applied in the rubber seal that plays transmission of pressure and sealing function in the brake fluid system of car, Light-duty Vehicle, minibus, part bogie and clutch operating system, booster pump system.Rubber cup also is applied on household electrical appliance, as is used in the rubber cup on the two-tub washing machine cylinder body, and cylinder body is played sealing function.Rubber cup is a kind of one of important rubber product of function that is widely used in rubber item.
The principal feature of rubber cup:
1) leather cup in master cylinder and wheel cylinder must have certain elasticity and compression set and wear resistance, in use has to guarantee leather cup certain return ability and the sealing property of transmitting hydraulic pressure.2) (the lower hydraulic pressure resistant medium of 100 ~ 120 ℃ and low temperature (30 ~ 50 ℃) is good at high temperature, leather cup long period in the braking sealing device contacts with braking fluid, therefore require it to have good anti swelling to braking fluid (synthetic liquid, mineral oil), do not allow under high temperature, low temperature and static room temperature, seepage to occur.
Major ingredient when in prior art, rubber cup is produced mostly is the rubber paracril, paracril to have oil-proofness fabulous, wear resistance is higher, and thermotolerance is better, and bonding force is strong, but its lower temperature resistance is poor, ozone resistance is poor, electrical property is inferior, and elasticity is low, uses for a long time under low temperature environment, its sealing property can reduce greatly, need to improve existing leather cup sizing compound formula.
Summary of the invention
The invention provides a kind of pkr high-pressure self-sealing leather cup rubber and preparation method thereof, sizing material of the present invention has excellent high-low temperature resistant, oil resistant, anti-solvent and chemical resistance, good mechanical property simultaneously.
The present invention adopts following technical scheme:
a kind of pkr high-pressure self-sealing leather cup rubber, it is characterized in that, made by following raw materials in part by weight: paracril 30-40, polyisoprene rubber 20-30, the bright Sheng of terpolymer EP rubber 5962(Germany) 20-40, trifluoropropyl siloxane 10-15, natural rubber 3-5, high abrasion furnace carbon black N330 30-40, modified white carbon black 10-15, antimonous oxide 3-4, modification trees ashes 8-10, attapulgite 4-6, sepiolite 4-6, Modified Iron mine tailing ground-slag 9-11, stearic acid 0.5～1, isocyanic ester 0.5～1, altax 0.2-0.4, accelerant B Z 0.3-0.6, calcium stearate 1-2, zinc oxide 2-4, ferrocene 0.2-0.4, polyethylene wax 1-2, oxidation inhibitor DSTP1-2, anti-aging agent TPPD 1-2, coupling agent DL-1512-3, epoxy Toenol 1140 16-18.
described a kind of pkr high-pressure self-sealing leather cup rubber, it is characterized in that, made by following raw materials in part by weight: paracril 35, polyisoprene rubber 25, the bright Sheng of terpolymer EP rubber 5962(Germany) 24, trifluoropropyl siloxane 12, natural rubber 4, high abrasion furnace carbon black N330 35, modified white carbon black 12, antimonous oxide 3, modification trees ashes 9, attapulgite 5, sepiolite 5, Modified Iron mine tailing ground-slag 10, stearic acid 0.7, isocyanic ester 0.5～1, altax 0.3, accelerant B Z 0.5, calcium stearate 2, zinc oxide 4, ferrocene 0.3, polyethylene wax 1, oxidation inhibitor DSTP1.5, anti-aging agent TPPD 1.5, coupling agent DL-1512, epoxy Toenol 1140 18.
Described a kind of pkr is characterized in that with the preparation method of high-pressure self-sealing leather cup rubber, comprises the following steps:
(1) preparation method of modification trees ashes:
The sericite-tridymite-cristobalite of trees ashes weight 1-2% is joined in the trees ashes mix, using 15-20% salt acid soak 1-2 hour, wash with water to neutrality, after oven dry, add trisodium phosphate, 1-2% polyoxyethylene octylphenol ether, the 3-5% Zirconium tetrafluoride of the aluminate coupling agent DL-411, the 1-2% that are equivalent to solid weight 0.5-1.0%, the speed high-speed stirring with 1200-1500 rev/min obtains dispersion liquid, dispersion liquid is dried, is ground into powder, obtains modification trees ashes;
(2) preparation of Modified Iron mine tailing ground-slag:
With 900-1000 ℃ of lower scaling loss 4-6 of iron tailings slag hour, then grind to form nanometer powder, then it is even to admix the molybdenum oxide, the calcium lignin sulphonate of 1-2%, the 1-2% dimethyl silicone oil agitating that are equivalent to powder weight 1-2%, oven dry, grind to form nanometer powder, obtain Modified Iron mine tailing ground-slag;
(3) preparation of modified white carbon black:
With white carbon black at 400-450 ℃ of lower scaling loss 2-3 hour, then grind to form nanometer powder, then it is even to admix calcium lignin sulphonate, the 1-2% dimethyl silicone oil agitating of the coupling agent Si-69, the 1-2% that are equivalent to powder weight 4-6%, oven dry, grind to form nanometer powder, obtain the white carbon black of modification;
(4) get coupling agent DL-151;
(5) press formula rate with in modification trees ashes, high abrasion furnace carbon black N330, input high-speed mixer, speed high-speed stirring with 1000-1200 rev/min is sprayed onto coupling agent DL-151 in mixed fillers simultaneously, continues to stir 5-6 minute, discharging is cooling standby, obtains mixture;
(6) with paracril, polyisoprene rubber, the bright Sheng of terpolymer EP rubber 5962(Germany), trifluoropropyl siloxane, natural rubber, Modified Iron mine tailing ground-slag, modified white carbon black, drop in Banbury mixer, plasticate at the temperature of 70-75 ℃, after plasticating 14-16 minute, when temperature reaches 85-95 ℃, the beginning discharge was parked after discharge cooling 10-12 hour;
(7) by formula rate, above-mentioned cooled broken-(down)rubber is joined in Banbury mixer, the compound that adds again step (5), after mixing 2-3 minute, add again in formula after the mixing 10-15 of other leftover materials except vulcanizing agent and promotor class minute, when temperature reaches 90-98 ℃, the beginning discharge was parked after discharge cooling 12-14 hour;
(8) above-mentioned mixing materials is dropped in mill, then vulcanizing agent, promotor class are added in rubber unvulcanizate, thin-pass 3-4 is all over getting final product, the processing temperature of mill≤60 ℃.
Beneficial effect
the present invention is with paracril and other several compounding rubbers, improve the over-all properties of rubber unvulcanizate, with the trees ashes, white carbon black carries out respectively modification, simultaneously the tail Iron-ore Slag is carried out modification, then mix with carbon black, use again coupling agent treatment, use as strengthening agent, improved the dispersiveness of filler in rubber unvulcanizate, improved the filler addition, reduced material cost, the ozone resistance of the rubber unvulcanizate of gained and resistance to low temperature, resistance toheat improves greatly, has wider use temperature scope than paracril itself, better performance of technical process, lower starting material and production cost, the performance requriements that meets the component that domesticize.
Embodiment
The preparation of high-pressure self-sealing leather cup rubber of a kind of pkr,
at first take following starting material (kg) by the formula requirement: paracril 35, polyisoprene rubber 25, the bright Sheng of terpolymer EP rubber 5962(Germany) 24, trifluoropropyl siloxane 12, natural rubber 4, high abrasion furnace carbon black N330 35, modified white carbon black 12, antimonous oxide 3, modification trees ashes 9, attapulgite 5, sepiolite 5, Modified Iron mine tailing ground-slag 10, stearic acid 0.7, isocyanic ester 0.7, altax 0.3, accelerant B Z 0.5 0.6, calcium stearate 2, zinc oxide 4, ferrocene 0.3, polyethylene wax 1, oxidation inhibitor DSTP1.5, anti-aging agent TPPD 1.5, coupling agent DL-1512, epoxy Toenol 1140 18.
The preparation method comprises the following steps:
(1) preparation method of modification trees ashes:
The sericite-tridymite-cristobalite of trees ashes weight 1-2% is joined in the trees ashes mix, using 15-20% salt acid soak 1-2 hour, wash with water to neutrality, after oven dry, add trisodium phosphate, 1-2% polyoxyethylene octylphenol ether, the 3-5% Zirconium tetrafluoride of the aluminate coupling agent DL-411, the 1-2% that are equivalent to solid weight 0.5-1.0%, the speed high-speed stirring with 1200-1500 rev/min obtains dispersion liquid, dispersion liquid is dried, is ground into powder, obtains modification trees ashes;
(2) preparation of Modified Iron mine tailing ground-slag:
With 900-1000 ℃ of lower scaling loss 4-6 of iron tailings slag hour, then grind to form nanometer powder, then it is even to admix the molybdenum oxide, the calcium lignin sulphonate of 1-2%, the 1-2% dimethyl silicone oil agitating that are equivalent to powder weight 1-2%, oven dry, grind to form nanometer powder, obtain Modified Iron mine tailing ground-slag;
(3) preparation of modified white carbon black:
With white carbon black at 400-450 ℃ of lower scaling loss 2-3 hour, then grind to form nanometer powder, then it is even to admix calcium lignin sulphonate, the 1-2% dimethyl silicone oil agitating of the coupling agent Si-69, the 1-2% that are equivalent to powder weight 4-6%, oven dry, grind to form nanometer powder, obtain the white carbon black of modification;
(4) get coupling agent DL-151;
(5) press formula rate with in modification trees ashes, high abrasion furnace carbon black N330, input high-speed mixer, speed high-speed stirring with 1000-1200 rev/min is sprayed onto coupling agent DL-151 in mixed fillers simultaneously, continues to stir 5-6 minute, discharging is cooling standby, obtains mixture;
(6) with paracril, polyisoprene rubber, the bright Sheng of terpolymer EP rubber 5962(Germany), trifluoropropyl siloxane, natural rubber, Modified Iron mine tailing ground-slag, modified white carbon black, drop in Banbury mixer, plasticate at the temperature of 70-75 ℃, after plasticating 14-16 minute, when temperature reaches 85-95 ℃, the beginning discharge was parked after discharge cooling 10-12 hour;
(7) by formula rate, above-mentioned cooled broken-(down)rubber is joined in Banbury mixer, the compound that adds again step (5), after mixing 2-3 minute, add again in formula after the mixing 10-15 of other leftover materials except vulcanizing agent and promotor class minute, when temperature reaches 90-98 ℃, the beginning discharge was parked after discharge cooling 12-14 hour;
(8) above-mentioned mixing materials is dropped in mill, then vulcanizing agent, promotor class are added in rubber unvulcanizate, thin-pass 3-4 is all over getting final product, the processing temperature of mill≤60 ℃.
Experimental data
Make the sizing material detection that makes a service test by the formula for raw stock of embodiment, detected result:
Tensile strength is 25 Mpa, and fracture elongation rate is 460%, and tear strength is 34kN/m, through FAM-A oil (23 ℃ * 48h) soak after its tensile strength be 14MPa, ozone resistance: 500pphm * 40 ℃ * 70h, stretching 20%, flawless phenomenon; Place the 48h sizing material and seminess do not occur under the low temperature of-40 ℃.
Claims (3)
1. a pkr is with high-pressure self-sealing leather cup rubber, it is characterized in that, made by following raw materials in part by weight: paracril 30-40, polyisoprene rubber 20-30, the bright Sheng of terpolymer EP rubber 5962(Germany) 20-40, trifluoropropyl siloxane 10-15, natural rubber 3-5, high abrasion furnace carbon black N330 30-40, modified white carbon black 10-15, antimonous oxide 3-4, modification trees ashes 8-10, attapulgite 4-6, sepiolite 4-6, Modified Iron mine tailing ground-slag 9-11, stearic acid 0.5～1, isocyanic ester 0.5～1, altax 0.2-0.4, accelerant B Z 0.3-0.6, calcium stearate 1-2, zinc oxide 2-4, ferrocene 0.2-0.4, polyethylene wax 1-2, oxidation inhibitor DSTP1-2, anti-aging agent TPPD 1-2, coupling agent DL-151 2-3, epoxy Toenol 1140 16-18.
2. a kind of pkr according to claim 1 is with high-pressure self-sealing leather cup rubber, it is characterized in that, made by following raw materials in part by weight: paracril 35, polyisoprene rubber 25, the bright Sheng of terpolymer EP rubber 5962(Germany) 24, trifluoropropyl siloxane 12, natural rubber 4, high abrasion furnace carbon black N330 35, modified white carbon black 12, antimonous oxide 3, modification trees ashes 9, attapulgite 5, sepiolite 5, Modified Iron mine tailing ground-slag 10, stearic acid 0.7, isocyanic ester 0.7, altax 0.3, accelerant B Z 0.5, calcium stearate 2, zinc oxide 4, ferrocene 0.3, polyethylene wax 1, oxidation inhibitor DSTP1.5, anti-aging agent TPPD 1.5, coupling agent DL-151 2, epoxy Toenol 1140 18.
3. a kind of pkr according to claim 1 and 2 with the preparation method of high-pressure self-sealing leather cup rubber, is characterized in that, comprises the following steps:
(1) preparation method of modification trees ashes:
The sericite-tridymite-cristobalite of trees ashes weight 1-2% is joined in the trees ashes mix, using 15-20% salt acid soak 1-2 hour, wash with water to neutrality, after oven dry, add trisodium phosphate, 1-2% polyoxyethylene octylphenol ether, the 3-5% Zirconium tetrafluoride of the aluminate coupling agent DL-411, the 1-2% that are equivalent to solid weight 0.5-1.0%, the speed high-speed stirring with 1200-1500 rev/min obtains dispersion liquid, dispersion liquid is dried, is ground into powder, obtains modification trees ashes;
(2) preparation of Modified Iron mine tailing ground-slag:
With 900-1000 ℃ of lower scaling loss 4-6 of iron tailings slag hour, then grind to form nanometer powder, then it is even to admix the molybdenum oxide, the calcium lignin sulphonate of 1-2%, the 1-2% dimethyl silicone oil agitating that are equivalent to powder weight 1-2%, oven dry, grind to form nanometer powder, obtain Modified Iron mine tailing ground-slag;
(3) preparation of modified white carbon black:
With white carbon black at 400-450 ℃ of lower scaling loss 2-3 hour, then grind to form nanometer powder, then it is even to admix calcium lignin sulphonate, the 1-2% dimethyl silicone oil agitating of the coupling agent Si-69, the 1-2% that are equivalent to powder weight 4-6%, oven dry, grind to form nanometer powder, obtain the white carbon black of modification;
(4) get coupling agent DL-151;
(5) pressing formula rate drops into modification trees ashes, high abrasion furnace carbon black N330 in high-speed mixer, speed high-speed stirring with 1000-1200 rev/min is sprayed onto coupling agent DL-151 in mixed fillers simultaneously, continues to stir 5-6 minute, discharging is cooling standby, obtains mixture;
(6) with paracril, polyisoprene rubber, the bright Sheng of terpolymer EP rubber 5962(Germany), trifluoropropyl siloxane, natural rubber, Modified Iron mine tailing ground-slag, modified white carbon black, drop in Banbury mixer, plasticate at the temperature of 70-75 ℃, after plasticating 14-16 minute, when temperature reaches 85-95 ℃, the beginning discharge was parked after discharge cooling 10-12 hour;
(7) by formula rate, above-mentioned cooled broken-(down)rubber is joined in Banbury mixer, the compound that adds again step (5), after mixing 2-3 minute, add again in formula after the mixing 10-15 of other leftover materials except vulcanizing agent and promotor class minute, when temperature reaches 90-98 ℃, the beginning discharge was parked after discharge cooling 12-14 hour;
(8) above-mentioned mixing materials is dropped in mill, then vulcanizing agent, promotor class are added in rubber unvulcanizate, thin-pass 3-4 is all over getting final product, the processing temperature of mill≤60 ℃.
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