CN103102529B - 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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- CN103102529B CN103102529B CN201210531056.0A CN201210531056A CN103102529B CN 103102529 B CN103102529 B CN 103102529B CN 201210531056 A CN201210531056 A CN 201210531056A CN 103102529 B CN103102529 B CN 103102529B
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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 synthetic rubber field, be specifically related to a kind of pkr high-pressure self-sealing leather cup rubber and preparation method thereof.
Background technology
Rubber cup mainly refers to the rubber seal being applied in and playing transmission of pressure and sealing function in car, Light-duty Vehicle, minibus, the brake fluid system of part bogie and clutch operating system, booster pump system.Rubber cup is also applied on household electrical appliance, as being used in the rubber cup on two-tub washing machine cylinder body, plays sealing function to cylinder body.Rubber cup a kind ofly in rubber item is widely used one of important rubber product of function.
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, to ensure that leather cup in use has the certain return ability and sealing property transmitting hydraulic pressure.2) at high temperature, (under 100 ~ 120 DEG C and low temperature (-30 ~ 50 DEG C), hydraulic pressure resistant medium is good, leather cup long period in braking sealing device contacts with braking fluid, therefore require that it has good anti swelling to braking fluid (synthesis liquid, mineral oil), do not allow, under high temperature, low temperature and static room temperature, seepage occurs.
Major ingredient when rubber cup is produced in prior art mostly is 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 at low ambient temperatures, its sealing property can reduce greatly, needs to improve existing cup rubber material 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, solvent resistant and chemical resistance, simultaneously good mechanical property.
The present invention adopts following technical scheme:
A kind of pkr high-pressure self-sealing leather cup rubber, it is characterized in that, be made up of 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 tree ash 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, be made up of 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 tree ash 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.
The preparation method of described a kind of pkr high-pressure self-sealing leather cup rubber, is characterized in that, comprise the following steps:
(1) preparation method of modification tree ash:
The sericite-tridymite-cristobalite of tree ash weight 1-2% is joined in tree ash and mixes, with 15-20% salt acid soak 1-2 hour, wash with water to neutrality, after oven dry, add the trisodium phosphate of aluminate coupling agent DL-411, the 1-2% being equivalent to solid weight 0.5-1.0%, 1-2% polyoxyethylene octylphenol ether, 3-5% Zirconium tetrafluoride, with the speed high-speed stirring of 1200-1500 rev/min, obtain dispersion liquid, dispersion liquid is dried, is ground into powder, obtains modification tree ash;
(2) preparation of Modified Iron mine tailing ground-slag:
By scaling loss 4-6 hour at iron tailings slag 900-1000 DEG C, 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%, dries, grind to form nanometer powder, obtain Modified Iron mine tailing ground-slag;
(3) preparation of modified white carbon black:
By white carbon black scaling loss 2-3 hour at 400-450 DEG C, then grind to form nanometer powder, then admix the calcium lignin sulphonate of coupling agent Si-69,1-2% of being equivalent to powder weight 4-6%, 1-2% dimethyl silicone oil agitating is even, dry, grind to form nanometer powder, obtain the white carbon black of modification;
(4) coupling agent DL-151 is got;
(5) by formula rate by modification tree ash, high abrasion furnace carbon black N330, input high-speed mixer, with the speed high-speed stirring of 1000-1200 rev/min, coupling agent DL-151 is sprayed onto in mixed fillers simultaneously, continues to stir 5-6 minute, discharging cooling is for subsequent use, obtains mixture;
(6) by paracril, polyisoprene rubber, terpolymer EP rubber 5962(Germany bright Sheng), 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 DEG C, after plasticating 14-16 minute, when temperature reaches 85-95 DEG C, start discharge, after discharge, park cooling 10-12 hour;
(7) by formula rate, above-mentioned cooled broken-(down)rubber is joined in Banbury mixer, add the compound of step (5) again, after mixing 2-3 minute, after adding the mixing 10-15 of other leftover materials minute in formula beyond sulphur removal agent and promotor class again, when temperature reaches 90-98 DEG C, start discharge, after discharge, park 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 time, processing temperature≤60 DEG C of mill.
beneficial effect
The present invention is by paracril and other several compounding rubber, improve the over-all properties of rubber unvulcanizate, by tree ash, white carbon black carries out modification respectively, tail Iron-ore Slag is carried out modification simultaneously, then mix with carbon black, use coupling agent treatment again, use as strengthening agent, improve the dispersiveness of filler in rubber unvulcanizate, improve filler addition, reduce material cost, the ozone resistance of the rubber unvulcanizate of gained and resistance to low temperature, resistance toheat improves greatly, than paracril itself, there is wider use temperature scope, better performance of technical process, lower starting material and production cost, meet the performance requriements of production domesticization component.
Embodiment
A preparation for pkr high-pressure self-sealing leather cup rubber,
First following raw materials (kg) is taken by recipe requirements: 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 tree ash 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.
Preparation method comprises the following steps:
(1) preparation method of modification tree ash:
The sericite-tridymite-cristobalite of tree ash weight 1-2% is joined in tree ash and mixes, with 15-20% salt acid soak 1-2 hour, wash with water to neutrality, after oven dry, add the trisodium phosphate of aluminate coupling agent DL-411, the 1-2% being equivalent to solid weight 0.5-1.0%, 1-2% polyoxyethylene octylphenol ether, 3-5% Zirconium tetrafluoride, with the speed high-speed stirring of 1200-1500 rev/min, obtain dispersion liquid, dispersion liquid is dried, is ground into powder, obtains modification tree ash;
(2) preparation of Modified Iron mine tailing ground-slag:
By scaling loss 4-6 hour at iron tailings slag 900-1000 DEG C, 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%, dries, grind to form nanometer powder, obtain Modified Iron mine tailing ground-slag;
(3) preparation of modified white carbon black:
By white carbon black scaling loss 2-3 hour at 400-450 DEG C, then grind to form nanometer powder, then admix the calcium lignin sulphonate of coupling agent Si-69,1-2% of being equivalent to powder weight 4-6%, 1-2% dimethyl silicone oil agitating is even, dry, grind to form nanometer powder, obtain the white carbon black of modification;
(4) coupling agent DL-151 is got;
(5) by formula rate by modification tree ash, high abrasion furnace carbon black N330, input high-speed mixer, with the speed high-speed stirring of 1000-1200 rev/min, coupling agent DL-151 is sprayed onto in mixed fillers simultaneously, continues to stir 5-6 minute, discharging cooling is for subsequent use, obtains mixture;
(6) by paracril, polyisoprene rubber, terpolymer EP rubber 5962(Germany bright Sheng), 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 DEG C, after plasticating 14-16 minute, when temperature reaches 85-95 DEG C, start discharge, after discharge, park cooling 10-12 hour;
(7) by formula rate, above-mentioned cooled broken-(down)rubber is joined in Banbury mixer, add the compound of step (5) again, after mixing 2-3 minute, after adding the mixing 10-15 of other leftover materials minute in formula beyond sulphur removal agent and promotor class again, when temperature reaches 90-98 DEG C, start discharge, after discharge, park 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 time, processing temperature≤60 DEG C of mill.
experimental data
Make sizing material by the formula for raw stock of embodiment to make a service test detection, detected result:
Tensile strength is 25 Mpa, and fracture elongation rate is 460%, and tear strength is 34kN/m, and after FAM-A oil (23 DEG C × 48h) soaks, its tensile strength is 14MPa, ozone resistance: 500pphm × 40 DEG C × 70h, stretching 20%, flawless phenomenon; Put 48h sizing material at the low temperature of-40 DEG C and do not occur seminess.
Claims (2)
1. a pkr high-pressure self-sealing leather cup rubber, it is characterized in that, be made up of following raw materials in part by weight: paracril 30-40, polyisoprene rubber 20-30, the bright Sheng 20-40 of terpolymer EP rubber 5962 Germany, 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 tree ash 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,
Its preparation method comprises the following steps:
(1) preparation method of modification tree ash:
The sericite-tridymite-cristobalite of tree ash weight 1-2% is joined in tree ash and mixes, use 15-20% salt acid soak 1-2 hour again, wash with water to neutrality, after oven dry, add the trisodium phosphate of aluminate coupling agent DL-411, the 1-2% being equivalent to solid weight 0.5-1.0%, 1-2% polyoxyethylene octylphenol ether, 3-5% Zirconium tetrafluoride, with the speed high-speed stirring of 1200-1500 rev/min, obtain dispersion liquid, dispersion liquid is dried, is ground into powder, obtains modification tree ash;
(2) preparation of Modified Iron mine tailing ground-slag:
By scaling loss 4-6 hour at iron tailings slag 900-1000 DEG C, 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%, dries, grind to form nanometer powder, obtain Modified Iron mine tailing ground-slag;
(3) preparation of modified white carbon black:
By white carbon black scaling loss 2-3 hour at 400-450 DEG C, then grind to form nanometer powder, then admix the calcium lignin sulphonate of coupling agent Si-69,1-2% of being equivalent to powder weight 4-6%, 1-2% dimethyl silicone oil agitating is even, dry, grind to form nanometer powder, obtain the white carbon black of modification;
(4) coupling agent DL-151 is got;
(5) by formula rate, modification tree ash, high abrasion furnace carbon black N330 are dropped in high-speed mixer, with the speed high-speed stirring of 1000-1200 rev/min, coupling agent DL-151 is sprayed onto in mixed fillers simultaneously, continues to stir 5-6 minute, discharging cooling is for subsequent use, obtains mixture;
(6) by paracril, polyisoprene rubber, the German bright Sheng of terpolymer EP rubber 5962, 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 DEG C, after plasticating 14-16 minute, when temperature reaches 85-95 DEG C, start discharge, after discharge, park cooling 10-12 hour;
(7) by formula rate, above-mentioned cooled broken-(down)rubber is joined in Banbury mixer, add the compound of step (5) again, after mixing 2-3 minute, after adding the mixing 10-15 of other leftover materials minute in formula beyond sulphur removal agent and promotor class again, when temperature reaches 90-98 DEG C, start discharge, after discharge, park 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 time, processing temperature≤60 DEG C of mill.
2. a kind of pkr high-pressure self-sealing leather cup rubber according to claim 1, it is characterized in that, be made up of following raw materials in part by weight: paracril 35, polyisoprene rubber 25, the German bright Sheng 24 of terpolymer EP rubber 5962, trifluoropropyl siloxane 12, natural rubber 4, high abrasion furnace carbon black N330 35, modified white carbon black 12, antimonous oxide 3, modification tree ash 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.
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