CN103421249A - Preparation method for novel ethylene propylene rubber sealing material product - Google Patents
Preparation method for novel ethylene propylene rubber sealing material product Download PDFInfo
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Abstract
The invention discloses a preparation method for a novel ethylene propylene rubber sealing material product. The preparation method employs two different kinds of ethylene propylene diene monomer raw rubbers as basic materials with cooperation of certain amounts of carbon black, calcium carbonate, paraffin oil, zinc oxide, stearic acid, polyvinyl alcohol, high-molecular wax, compound antioxidants, dispersants, compound accelerants, vulcanizing agents, fire retardants and the like. The above materials are subjected to mixing, open milling and vulcanization technologies to obtain the novel ethylene propylene rubber sealing material product. The preparation method has advantages of simple formula, simple production technology, short vulcanizing time, high production efficiency, relatively low production cost, easy industrialization enforcement and the like. Through the preparation method, rubber sealing strip products which are advantaged by good sealing performance, uniform structure, resistance to corrosion, resistance to high and low temperature, flame resistance, environment protection and comfort can be produced.
Description
Technical field
The present invention relates to the rubber packing material field, be specially a kind of formula and production technique is simple, curing time is short, goods good combination property, cost are low, corrosion-resistant, ageing-resistant, the preparation method of the rubber seal products of flame-proof environmental protection.
Background technology
In the modern industry field, packing technique plays a part very important, and it is the key that hydraulic pressure and baric systerm performance are guaranteed.Seal failure not only can significantly increase follow-up maintenance cost, also may cause fatal disaster.At present, packing technique is widely used at numerous areas such as machinery, chemical industry, traffic, food, weaving, buildings.For example, at automotive field, packing technique just comprises the application of three broad aspect: oil sealing, water seal and sealing gland.The deciding factor of sealing article performance quality is the performance of material, sealing material has metallic substance (aluminium, lead, indium, stainless steel etc.), non-metallic material (rubber, plastics, pottery, graphite etc.) and matrix material (as rubber-asbestos plate) are also arranged, but current use maximum be the rubber-like elastomer material.
In recent years, the working conditions of rubber seal is day by day harsh, and applying working condition is more and more harsher, shows many aspects, and for example, the use temperature scope of sealing member is more and more broader, and high temperature, low temperature two aspects are all constantly breaking through the original operating mode limit; The medium and the additive that contact become increasingly complex, and require the corrodibility of sealing member material more and more stronger; The inflammable scarce of rubber item has determined that the flame retardant resistance demand of rubber packing material highlights day by day; In addition, the requirements such as inexpensive, the easy production of goods, attractive in appearanceization, comfortableization also constantly are being suggested.Therefore, the research of carrying out the high-performance sealed material has great importance.
In the rubber-like sealing material, the application of terpolymer EP rubber is increasingly extensive.The density of terpolymer EP rubber is lower, can be in a large number oil-filled and add weighting agent, thereby can reduce the cost of rubber item, made up the high shortcoming of its rubber price, and after high the filling, physical mechanical energy reduction amplitude is little; Terpolymer EP rubber has excellent anti-weather, anti-ozone, heat-resisting, acid and alkali-resistance, water-fast steam performance, and excellent electrical insulation capability and corona resistance colour stability, oil-filled property, normal temperature mobility etc.; Due to nonpolarity substituting group in the ethylene-propylene rubber(EPR) molecular structure, molecule inner injection can be low, and molecular chain can keep kindliness in relative broad range, is only second to natural rubber and cis-1,4-polybutadiene rubber, and still can keep at low temperatures.
At present, the EPT rubber packing material goods exist that production cost is high, flame retardant properties is poor, curing time is long, the goods ageing-resistant performance remains the defects such as further raising.Therefore, exploitation favorable sealing property and production cost is lower, corrosion-resistant, the novel tertiary ethylene-propylene rubber(EPR) sealing material of high-low temperature resistant, flame-proof environmental protection is a brand-new problem.
Summary of the invention
The production cost existed for existing EPT rubber packing bar production is high, curing time is long, the goods flame retardant properties is poor, ageing-resistant performance remains the deficiencies such as further raising, and the technical problem that quasi-solution of the present invention is determined is: the preparation method who designs a kind of novel ethylene-propylene rubber(EPR) sealing material goods.This preparation method is basic raw material for adopting terpolymer EP rubber 4436 and 539 two kind of green stock, with a certain amount of carbon black, calcium carbonate, paraffin oil, zinc oxide, stearic acid, polyvinyl alcohol, macromolecule wax and antiaging agent, dispersion agent, promotor, vulcanizing agent, fire retardant etc., coordinate, through banburying, open the refining and sulfuration process be prepared from.Select terpolymer EP rubber 4436 and 539 two kind of trade mark rubber, raw materials cost relative reduce, Raw material processing are functional, and goods corrosion resistance nature and other over-all properties are good.Select anti-aging agent KY-405 and oxidation inhibitor MBZ composite, goods high and low temperature resistance, antioxygen property etc. are good.Select accelerant CZ, BZ, TRA, the composite synergy of TT, PZ, curing time is short, production efficiency is high.Add halogen-free flame retardants in formula, improved the environmental protection flame retardant performance of goods.
A kind of preparation method of novel ethylene-propylene rubber(EPR) sealing material goods, comprise the steps:
(1) take 6Kg terpolymer EP rubber 4436,5～6Kg terpolymer EP rubber 539, carbon black 10～13Kg, light calcium carbonate 3～4Kg, paraffin oil 9～10Kg, zinc oxide 0.5～1Kg, stearic acid 0.1～0.3Kg, 0.1 the KY-405 of～0.2Kg, MBZ is 0.05～0.1Kg approximately, polyoxyethylene glycol 0.1～0.3Kg, polyethylene wax 0.1～0.15Kg, the about 0.15-0.3Kg of AFLUX-42.In addition, take approximately 0.15～0.3Kg of accelerant CZ, accelerant B Z is 0.15～0.3Kg approximately, and promotor TRA is 0.05～0.1Kg approximately, and promotor TT is 0.05～0.1Kg approximately, and promotor PZ is 0.05～0.1Kg approximately, sulphur 0.1～0.2Kg, fire retardant 0.15～0.3Kg.
(2) second the third rubber being placed in to Banbury mixer plasticates 60～80 seconds, then add zinc oxide, stearic acid, KY-405, MBZ mixing 30～40 seconds, add banburyings such as carbon black, light calcium carbonate, paraffin oil, polyoxyethylene glycol, polyethylene wax and AFLUX-42 60～120 seconds one section glue.Plasticate and be controlled at 120～140 ℃ with melting temperature.
(3) one section glue is placed in mill, adds accelerant CZ, BZ, TRA, TT, PZ and vulcanizing agent sulphur and ammonium polyphosphate flame retardant, open under 55～70 ℃ and refine to section evenly, slice obtains two sections glue.
(4) by after two sections gum formings on vulcanizer 170～185 ℃ of sulfurations within 6～8 minutes, obtain the one step cure product.
Fire retardant of the present invention is environment-friendly type non-bittern combustion inhibitor, can be one or more compound uses in tricresyl phosphate (2-chloroethyl) ester (TCEP), tricresyl phosphate (2-chloropropyl) ester (TCPP), triaryl phosphate (IPPP), triethyl phosphate (TEP) and ammonium polyphosphate etc.
Beneficial effect of the present invention:
The preparation method that the present invention solves described novel ethylene-propylene rubber(EPR) sealing material goods is on the basis of existing EPT rubber packing material goods formula, to the improvement of rubber raw material, antiaging system, sulfuration Promotion system and flame-retardant system.With existing EPT rubber packing material production of articles technology, compare, the good ethylene-propylene rubber(EPR) 4436 of rubber raw material choose over-all properties of the present invention, add therein vulcanization rate fast, there is excellent compression set, can highly fill coordinate, the relatively cheap ethylene-propylene rubber(EPR) 539 of price, under the prerequisite that guarantees the sizing material excellent machinability, can reduce product cost more than 10%; In the present invention formula, take anti-aging agent KY-405 and oxidation inhibitor MBZ composite, improved goods high and low temperature resistance and other ageing resistance, goods can improve approximately 30% work-ing life; Accelerant CZ, BZ, TRA, the composite synergy of TT, PZ, can shorten one step cure product curing time in 8 minutes, improved production efficiency.
Sealing material prepared by the present invention can need to add the goods that various tinting materials prepare various colors according to the user, meets user's demand attractive in appearance.One step cure product prepared by the present invention can further be regulated curing time according to structural shape and the dimensional requirement of concrete goods.The characteristics such as in addition, preparation method of the present invention has formula and production technique is simple, curing time is short, production efficiency is high, industrializing implementation is easy.
Embodiment
The following examples can make the present invention of those skilled in the art comprehend, but do not limit the present invention in any way.
Embodiment 1:
(1) take 6Kg terpolymer EP rubber 4436,5.5Kg terpolymer EP rubber 539, carbon black 10Kg, light calcium carbonate 3Kg, paraffin oil 9Kg, zinc oxide 0.5Kg, stearic acid 0.1Kg, 0.1Kg KY-405, the MBZ of 0.05Kg, polyoxyethylene glycol 0.1Kg, polyethylene wax 0.1Kg, the AFLUX-42 of 0.15Kg.In addition, take the 0.15Kg accelerant CZ, 0.15Kg accelerant B Z, 0.05Kg promotor TRA, 0.05Kg promotor TT, 0.05Kg promotor PZ, sulphur 0.1Kg, ammonium polyphosphate 0.15Kg.
(2) second the third rubber being placed in to Banbury mixer plasticates 60 seconds, then add zinc oxide, stearic acid, KY-405, MBZ mixing 40 seconds, add banburyings such as carbon black, light calcium carbonate, paraffin oil, polyoxyethylene glycol, polyethylene wax and AFLUX-42 120 seconds one section glue.Plasticate and be controlled at 130 ℃ with melting temperature.
(3) one section glue is placed in mill, adds accelerant CZ, BZ, TRA, TT, PZ and vulcanizing agent sulphur and ammonium polyphosphate flame retardant, open under 70 ℃ and refine to section evenly, slice obtains two sections glue.
(4) by after two sections gum formings on vulcanizer 185 ℃ of sulfurations within 6.5 minutes, obtain the one step cure product.
Embodiment 2:
(1) take 6Kg terpolymer EP rubber 4436,5.5Kg terpolymer EP rubber 539, carbon black 12Kg, light calcium carbonate 3.3Kg, paraffin oil 9Kg, zinc oxide 0.5Kg, stearic acid 0.15Kg, 0.1Kg KY-405, the MBZ of 0.05Kg, polyoxyethylene glycol 0.1Kg, polyethylene wax 0.1Kg, the AFLUX-42 of 0.15Kg.In addition, take the 0.2Kg accelerant CZ, 0.15Kg accelerant B Z, 0.05Kg promotor TRA, 0.05Kg promotor TT, 0.05Kg promotor PZ, sulphur 0.1Kg, the TCEP of 0.15Kg.
(2) second the third rubber being placed in to Banbury mixer plasticates 80 seconds, then add zinc oxide, stearic acid, KY-405, MBZ mixing 40 seconds, add banburyings such as carbon black, light calcium carbonate, paraffin oil, polyoxyethylene glycol, polyethylene wax and AFLUX-42 120 seconds one section glue.Plasticate and be controlled at 120 ℃ with melting temperature.
(3) one section glue is placed in mill, adds accelerant CZ, BZ, TRA, TT, PZ and vulcanizing agent sulphur and ammonium polyphosphate flame retardant, open under 60 ℃ and refine to section evenly, slice obtains two sections glue.
(4) by after two sections gum formings on vulcanizer 170 ℃ of sulfurations within 7 minutes, obtain the one step cure product.
Embodiment 3:
(1) take 6Kg terpolymer EP rubber 4436,5Kg terpolymer EP rubber 539, carbon black 12.5Kg, light calcium carbonate 4Kg, paraffin oil 9Kg, zinc oxide 0.5Kg, stearic acid 0.15Kg, 0.1Kg KY-405, the MBZ of 0.05Kg, polyoxyethylene glycol 0.1Kg, polyethylene wax 0.1Kg, the AFLUX-42 of 0.15Kg.In addition, take the 0.2Kg accelerant CZ, 0.15Kg accelerant B Z, 0.05Kg promotor TRA, 0.05Kg promotor TT, 0.05Kg promotor PZ, sulphur 0.2Kg, the TCPP of 0.2Kg.
(2) second the third rubber being placed in to Banbury mixer plasticates 70 seconds, then add zinc oxide, stearic acid, KY-405, MBZ mixing 30 seconds, add banburyings such as carbon black, light calcium carbonate, paraffin oil, polyoxyethylene glycol, polyethylene wax and AFLUX-42 120 seconds one section glue.Plasticate and be controlled at 130 ℃ with melting temperature.
(3) one section glue is placed in mill, adds accelerant CZ, BZ, TRA, TT, PZ and vulcanizing agent sulphur and ammonium polyphosphate flame retardant, open under 55 ℃ and refine to section evenly, slice obtains two sections glue.
(4) by after two sections gum formings on vulcanizer 180 ℃ of sulfurations within 6 minutes, obtain the one step cure product.
Embodiment 4:
(1) take 6Kg terpolymer EP rubber 4436,6Kg terpolymer EP rubber 539, carbon black 11Kg, light calcium carbonate 4Kg, paraffin oil 9.5Kg, zinc oxide 1Kg, stearic acid 0.2Kg, the KY-405 of 0.1Kg, the MBZ of 0.05Kg, polyoxyethylene glycol 0.1Kg, polyethylene wax 0.1Kg, the AFLUX-42 of 0.15Kg.In addition, take the 0.3Kg accelerant CZ, 0.3Kg accelerant B Z, 0.1Kg promotor TRA, 0.05Kg promotor TT, 0.05Kg promotor PZ, sulphur 0.2Kg, the IPPP of 0.25Kg.
(2) second the third rubber being placed in to Banbury mixer plasticates 70 seconds, then add zinc oxide, stearic acid, KY-405, MBZ mixing 30 seconds, add banburyings such as carbon black, light calcium carbonate, paraffin oil, polyoxyethylene glycol, polyethylene wax and AFLUX-42 100 seconds one section glue.Plasticate and be controlled at 130 ℃ with melting temperature.
(3) one section glue is placed in mill, adds accelerant CZ, BZ, TRA, TT, PZ and vulcanizing agent sulphur and ammonium polyphosphate flame retardant, open under 68 ℃ and refine to section evenly, slice obtains two sections glue.
(4) by after two sections gum formings on vulcanizer 175 ℃ of sulfurations within 8 minutes, obtain the one step cure product.
Embodiment 5:
(1) take 6Kg terpolymer EP rubber 4436,6Kg terpolymer EP rubber 539, carbon black 11.5Kg, light calcium carbonate 4Kg, paraffin oil 10Kg, zinc oxide 0.8Kg, stearic acid 0.1Kg, 0.1Kg KY-405, the MBZ of 0.05Kg, polyoxyethylene glycol 0.1Kg, polyethylene wax 0.1Kg, the AFLUX-42 of 0.22Kg.In addition, take the 0.15Kg accelerant CZ, 0.15Kg accelerant B Z, 0.05Kg promotor TRA, 0.05Kg promotor TT, 0.1Kg promotor PZ, sulphur 0.15Kg, the TEP of 0.3Kg.
(2) second the third rubber being placed in to Banbury mixer plasticates 80 seconds, then add zinc oxide, stearic acid, KY-405, MBZ mixing 35 seconds, add banburyings such as carbon black, light calcium carbonate, paraffin oil, polyoxyethylene glycol, polyethylene wax and AFLUX-42 90 seconds one section glue.Plasticate and be controlled at 126 ℃ with melting temperature.
(3) one section glue is placed in mill, adds accelerant CZ, BZ, TRA, TT, PZ and vulcanizing agent sulphur and ammonium polyphosphate flame retardant, open under 66 ℃ and refine to section evenly, slice obtains two sections glue.
(4) by after two sections gum formings on vulcanizer 185 ℃ of sulfurations within 6 minutes, obtain the one step cure product.
Embodiment 6:
(1) take 6Kg terpolymer EP rubber 4436,5.5Kg terpolymer EP rubber 539, carbon black 12.5Kg, light calcium carbonate 3.0Kg, paraffin oil 10Kg, zinc oxide 0.8Kg, stearic acid 0.2Kg, 0.1Kg KY-405, the MBZ of 0.05Kg, polyoxyethylene glycol 0.22Kg, polyethylene wax 0.12Kg, the AFLUX-42 of 0.15Kg.In addition, take the 0.15Kg accelerant CZ, 0.15Kg accelerant B Z, 0.07Kg promotor TRA, 0.05Kg promotor TT, 0.06Kg promotor PZ, sulphur 0.14Kg, ammonium polyphosphate 0.15Kg.
(2) second the third rubber being placed in to Banbury mixer plasticates 75 seconds, then add zinc oxide, stearic acid, KY-405, MBZ mixing 35 seconds, add banburyings such as carbon black, light calcium carbonate, paraffin oil, polyoxyethylene glycol, polyethylene wax and AFLUX-42 110 seconds one section glue.Plasticate and be controlled at 135 ℃ with melting temperature.
(3) one section glue is placed in mill, adds accelerant CZ, BZ, TRA, TT, PZ and vulcanizing agent sulphur and ammonium polyphosphate flame retardant, open under 62 ℃ and refine to section evenly, slice obtains two sections glue.
(4) by after two sections gum formings on vulcanizer 176 ℃ of sulfurations within 6.6 minutes, obtain the one step cure product.
Claims (6)
1. the preparation method of novel ethylene-propylene rubber(EPR) sealing material goods comprises following process:
(1) take terpolymer EP rubber (trade mark 4436) 6Kg, terpolymer EP rubber (trade mark 539) 5～6Kg, carbon black 10～13Kg, light calcium carbonate 3～4Kg, paraffin oil 9～10Kg, zinc oxide 0.5～1Kg, stearic acid 0.1～0.3Kg, 4,4`-bis-(propyloxy phenyl base) pentanoic (KY-405) 0.1～0.2Kg, 2 mercapto benzimidazole zinc salt (MBZ) 0.05～0.1Kg, polyoxyethylene glycol (molecular weight 4000) 0.1～0.3Kg, polyethylene wax 0.1～0.15Kg, dispersion agent (AFLUX-42) is 0.15-0.3Kg approximately;
In addition, take N-cyclohexyl-2-[4-morpholinodithio sulphenamide (accelerant CZ) 0.15～0.3Kg, zinc dibutyl dithiocaarbamate (accelerant B Z) 0.15～0.3Kg, tetra-sulfurized pair penta-methylene thiuram (promotor TRA) 0.05～0.1Kg, tetramethyl-thiuram disulfide (promotor TT) 0.05～0.1Kg, ziram (promotor PZ) 0.05～0.1Kg, sulphur 0.1～0.2Kg, fire retardant 0.15～0.3Kg;
(2) second the third rubber being placed in to Banbury mixer plasticates 60～80 seconds, then add zinc oxide, stearic acid, KY-405, MBZ mixing 30～40 seconds, add the banburyings such as carbon black, light calcium carbonate, paraffin oil, polyoxyethylene glycol, polyethylene wax and AFLUX-42 to obtain one section glue in 60～120 seconds, plasticate and be controlled at 120～140 ℃ with melting temperature;
(3) one section glue is placed in mill, adds accelerant CZ, BZ, TRA, TT, PZ and vulcanizing agent sulphur and ammonium polyphosphate flame retardant, open under 55～70 ℃ and refine to section evenly, slice obtains two sections glue;
(4) by after two sections gum formings on vulcanizer 170～185 ℃ of sulfurations within 6～8 minutes, obtain the one step cure product.
2. the preparation method of a kind of novel ethylene-propylene rubber(EPR) sealing material goods according to claim 1, it is characterized in that selecting terpolymer EP rubber 4436 and 539 two kind of trade mark blend, raw materials cost relative reduce, Raw material processing are functional, the goods corrosion resistance and good.
3. the preparation method of a kind of novel ethylene-propylene rubber(EPR) sealing material goods according to claim 1, is characterized in that selecting anti-aging agent KY-405 and oxidation inhibitor MBZ composite, and goods resistant of high or low temperature and other ageing resistance are good.
4. the preparation method of a kind of novel ethylene-propylene rubber(EPR) sealing material goods according to claim 1, is characterized in that selecting accelerant CZ, BZ, TRA, the composite synergy of TT, PZ, and curing time is short, production efficiency is high.
5. the preparation method of a kind of novel ethylene-propylene rubber(EPR) sealing material goods according to claim 1, it is characterized in that selecting environment-friendly type non-bittern combustion inhibitor to improve the environmental protection flame retardant performance of goods, fire retardant used can be one or more compound uses in tricresyl phosphate (2-chloroethyl) ester (TCEP), tricresyl phosphate (2-chloropropyl) ester (TCPP), triaryl phosphate (IPPP), triethyl phosphate (TEP) and ammonium polyphosphate etc.
6. the preparation method of a kind of novel ethylene-propylene rubber(EPR) sealing material goods according to claim 1, is characterized in that formula and production technique is simple, curing time is short, production efficiency is high, production cost is low, industrializing implementation is easy.
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| CN108314853A (en) * | 2018-02-09 | 2018-07-24 | 内蒙古工业大学 | A kind of preparation method and environmental protection type material of rubber of environmental protection type material of rubber |
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