CN103642097A - Preparation method of nitrile butadiene rubber for preparing seal ring of floating oil seal with high wear resistance - Google Patents
Preparation method of nitrile butadiene rubber for preparing seal ring of floating oil seal with high wear resistance Download PDFInfo
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- CN103642097A CN103642097A CN201310613204.8A CN201310613204A CN103642097A CN 103642097 A CN103642097 A CN 103642097A CN 201310613204 A CN201310613204 A CN 201310613204A CN 103642097 A CN103642097 A CN 103642097A
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Abstract
The invention relates to a preparation method of nitrile butadiene rubber for preparing a seal ring of a floating oil seal with high wear resistance. The preparation method comprises a formula and a preparation process, wherein the formula comprises the following components: nitrile butadiene rubber, N-550 carbon black, high-wear resistant carbon black, semi-reinforced carbon black, calcium carbonate, polyvinyl chloride, stearic acid, dibutyl ester, sulfur, accelerant, accelerant TE, accelerant TMTD, anti-aging agent RD, anti-aging agent 4010 and zinc oxide; the preparation process comprises the following steps: adjusting the temperature of a mixing machine to 100 DEG C, keeping the rotational speed at 32 revolutions/min, putting rubber raw material, a filling agent, a softening agent, an acidifying agent, the anti-aging agents and an activator into the mixing machine to mix for 20min, controlling the rubber temperature below 130 DEG C to discharge the rubber, then transferring to an open mill, and cooling extruded sheets to obtain a master batch; and putting the master batch into the mixing machine, adding a vulcanizing agent, blending, mixing, controlling the rubber temperature below 100 DEG C to discharge the rubber to the open mill, then cooling the extruded sheets, standing and curing to obtain the nitrile butadiene rubber for preparing the seal ring of the floating oil seal with high wear resistance.
Description
Technical field
The present invention relates to a kind of preparation method of paracril, relate in particular to a kind of preparation method of the paracril for the preparation of high abrasion float grease seal sealing-ring.
Background technology
The sealing principle of float grease seal is: two floating rings are subject to the distortion after axial compression by O RunddichtringO, produce the snap-in force to floating-ring seal end face.Along with the uniform wear of seal face, this elastic energy being stored by O-ring seals progressively discharges, thereby plays nose balance effect.Therefore,, in real work, require 0 RunddichtringO to there is very strong tensile property, impelling strength and wear resistance.
The testing data following (wherein test condition is draw speed: 500mm/min, LL0:25mm) of float grease seal sealing-ring of the prior art:
As seen from the above table, institute's test specimens does not also reach 300% and surely stretches and just rupture, and product can not meet the demand of O RunddichtringO.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of preparation method of the paracril for the preparation of high abrasion float grease seal sealing-ring is provided, the paracril making by the method has very strong tensile property and impelling strength.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: a kind of preparation method of the paracril for the preparation of high abrasion float grease seal sealing-ring, comprise formula and preparation technology, and it is characterized in that: described formula comprises following component:
Rubber raw materials: 15～20 parts of paracrils;
Fill up agent: 3～8 parts of N-550 carbon blacks, 1～5 part of high wear-resistant carbon black, 5～10 parts of semi-reinforcing hydrocarbon blacks, 1～3 part, calcium carbonate;
Tenderizer: 0.3～0.5 part of polyvinyl chloride, 0.2～0.5 part of stearic acid, 1～10 part of dibutylester;
Souring agent: 0.1～0.5 part, sulphur, 0.1～0.5 part of altax, 0.1～0.5 part of acceterator TE, 0.1～0.2 part of Vulcanization accelerator TMTD;
Anti-aging agent: 0.1～0.5 part of anti-aging agent RD, 0.1～0.5 part of antioxidant 4010;
Promoting agent: 0.5～2 part, zinc oxide, said components is all in parts by weight;
Described preparation technology comprises the following steps: step 1, adjustment Banbury mixer temperature to 100 ℃, 32 revs/min of rotating speeds, by rubber raw materials, fill up agent, tenderizer, souring agent, anti-aging agent and promoting agent and drop in Banbury mixer banburying 20 minutes, gelatin temperature control is at binder removal below 130 ℃, then move to mill, slice is cooling, obtains master batch stand-by;
Step 2, master batch is put in Banbury mixer, add 0.6～0.8 part of vulcanizing agent, carry out mixing, banburying 2 minutes, gelatin temperature control at binder removal below 100 ℃ to mill, then in mill, slice is cooling, and standing slaking 8～240 hours obtains the paracril for the preparation of high abrasion float grease seal sealing-ring.
As preferably, 18 parts of described paracrils, 5 parts of N-550 carbon blacks, 2 parts of high wear-resistant carbon blacks, 9 parts of semi-reinforcing hydrocarbon blacks, 1 part, calcium carbonate, 0.4 part of polyvinyl chloride, 0.3 part of stearic acid, 8 parts of dibutylesters, 0.1 part, sulphur, 0.4 part of altax, 0.3 part of acceterator TE, 0.12 part of Vulcanization accelerator TMTD, 0.3 part of anti-aging agent RD, 0.2 part of antioxidant 4010,1 part, zinc oxide.
As preferably, the vulcanizing agent in step 2 is 0.72 part.
In formula of the present invention, N550 carbon black is fast extruding furnace black, and particle surface is smooth, and structure is higher, is a kind of product that has medium reinforcing property concurrently and have fine processing characteristics, particularly gives the higher very property of sizing material and good tubing properties.Its reinforcing property is all higher than other soft carbon, and wear resisting property is not worse than channel black, therefore claim again MAF medium abrasion furnace black.Resistance to elevated temperatures and the heat conductivility of sizing material are good, and particularly elasticity and Restoration are good.Therefore, add N-550 carbon black, improve wear resistance, elasticity and the Restoration of paracril.Add high wear-resistant carbon black, improve tensile strength, tear strength, the wear-resisting and aging resistance of paracril simultaneously.Add semi-reinforcing hydrocarbon black, give sizing material high elongation rate, low-heat-generation, snappiness and good ageing-resistant performance etc.Calcium carbonate, as a kind of novel solid filler, is filled in rubber, can increase the volume of rubber item, saves expensive natural rubber and synthetic rubber, reduces production costs.And due to the adding of calcium carbonate, make rubber more easily mixing, processing characteristics and model good fluidity.Polyvinyl chloride has good resistance to low temperature, and chemical stability is good, and the erosion of the most of soda acids of ability adds polyethylene in formula, improves resistance to low temperature and the corrosion resistance nature of paracril.Stearic acid adds in formula as emulsifying agent, can make mixing thing more stable.Dibutylester, as the softening agent of paracril, increases the snappiness of paracril, increases the elongation at break of paracril, reduces the forming process temperature of paracril, improves the impact property of paracril, reduces the surface hardness of paracril.Add altax, improve the ageing resistance of paracril.Add acceterator TE, not only do promotor but also make vulcanizing agent, in addition, the anti-incipient scorch of acceterator TE is good, process safety.Vulcanization accelerator TMTD, with zinc oxide acting in conjunction, sulfuration promotion power is very strong.Anti-aging agent RD, splendid to heat and the aging protection effect that causes of oxygen, but poor to subduing aging protection effect, and antioxidant 4010: to air, heat with subdue the aging protective effect that has, can to make up the deficiency of anti-aging agent RD.Therefore,, by anti-aging agent RD and antioxidant 4010 use, to air, heat with subdue the aging splendid protective effect that has, in addition, antioxidant 4010 also has the effect of stiffening agent.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
embodimentfor the preparation of a preparation method for the paracril of high abrasion float grease seal sealing-ring, comprise formula and preparation technology, described formula comprises following component:
Rubber raw materials: 18 parts of paracrils;
Fill up agent: 5 parts of N-550 carbon blacks, 2 parts of high wear-resistant carbon blacks, 9 parts of semi-reinforcing hydrocarbon blacks, 1 part, calcium carbonate;
Tenderizer: 0.4 part of polyethylene, 0.3 part of stearic acid, 8 parts of dibutylesters;
Souring agent: 0.1 part, sulphur, 0.4 part of altax, 0.3 part of acceterator TE, 0.12 part of Vulcanization accelerator TMTD;
Anti-aging agent: 0.3 part of anti-aging agent RD, 0.2 part of antioxidant 4010;
Promoting agent: 1 part, zinc oxide, said components is all in parts by weight;
Described preparation technology comprises the following steps: step 1, adjustment Banbury mixer temperature to 100 ℃, 32 revs/min of rotating speeds, by rubber raw materials, fill up agent, tenderizer, souring agent, anti-aging agent and promoting agent and drop in Banbury mixer banburying 20 minutes, gelatin temperature control is at binder removal below 130 ℃, then move to mill, slice is cooling, obtains master batch stand-by;
Step 2, master batch is put in Banbury mixer, add 0.72 part of vulcanizing agent, carry out mixing, banburying 2 minutes, gelatin temperature control at binder removal below 100 ℃ to mill, then in mill, slice is cooling, and standing slaking 8～240 hours obtains the paracril for the preparation of high abrasion float grease seal sealing-ring.
The paracril Performance Detection following (wherein test condition is draw speed: 500mm/min, LL0:25mm) making according to above-mentioned formula and preparation method:
As seen from the above table, this test sample elongation at break is all over 400%, and the tensile property that proves this paracril has greatly in compared to prior art and improves.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (3)
1. for the preparation of a preparation method for the paracril of high abrasion float grease seal sealing-ring, comprise formula and preparation technology, it is characterized in that: described formula comprises following component:
Rubber raw materials: 15～20 parts of paracrils;
Fill up agent: 3～8 parts of N-550 carbon blacks, 1～5 part of high wear-resistant carbon black, 5～10 parts of semi-reinforcing hydrocarbon blacks, 1～3 part, calcium carbonate;
Tenderizer: 0.3～0.5 part of polyvinyl chloride, 0.2～0.5 part of stearic acid, 1～10 part of dibutylester;
Souring agent: 0.1～0.5 part, sulphur, 0.1～0.5 part of altax, 0.1～0.5 part of acceterator TE, 0.1～0.2 part of Vulcanization accelerator TMTD;
Anti-aging agent: 0.1～0.5 part of anti-aging agent RD, 0.1～0.5 part of antioxidant 4010;
Promoting agent: 0.5～2 part, zinc oxide, said components is all in parts by weight;
Described preparation technology comprises the following steps: step 1, adjustment Banbury mixer temperature to 100 ℃, 32 revs/min of rotating speeds, by rubber raw materials, fill up agent, tenderizer, souring agent, anti-aging agent and promoting agent and drop in Banbury mixer banburying 20 minutes, gelatin temperature control is at binder removal below 130 ℃, then move to mill, slice is cooling, obtains master batch stand-by;
Step 2, master batch is put in Banbury mixer, add 0.6～0.8 part of vulcanizing agent, carry out mixing, banburying 2 minutes, gelatin temperature control at binder removal below 100 ℃ to mill, then in mill, slice is cooling, and standing slaking 8～240 hours obtains the paracril for the preparation of high abrasion float grease seal sealing-ring.
2. the preparation method of the paracril for the preparation of high abrasion float grease seal sealing-ring according to claim 1, it is characterized in that: 18 parts of described paracrils, 5 parts of N-550 carbon blacks, 2 parts of high wear-resistant carbon blacks, 9 parts of semi-reinforcing hydrocarbon blacks, 1 part, calcium carbonate, 0.4 part of polyethylene, 0.3 part of stearic acid, 8 parts of dibutylesters, 0.1 part, sulphur, 0.4 part of altax, acceterator TE: 0.3 part, 0.12 part of Vulcanization accelerator TMTD, 0.3 part of anti-aging agent RD, 0.2 part of antioxidant 4010,1 part, zinc oxide.
3. the preparation method of the paracril for the preparation of high abrasion float grease seal sealing-ring according to claim 1, is characterized in that: the vulcanizing agent in step 2 is 0.72 part.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104231353A (en) * | 2014-09-17 | 2014-12-24 | 江阴海达橡塑股份有限公司 | Preparation method of wear-resistant rubber |
| CN104893029A (en) * | 2014-03-03 | 2015-09-09 | 青岛宝丰盛福华进出口密封件有限公司 | Oil resistant seal ring and preparation method thereof |
| CN106146941A (en) * | 2015-04-28 | 2016-11-23 | 安徽华润仪表线缆有限公司 | A kind of nitrile rubber oiliness bearing group sealing member material and preparation method thereof |
| CN106317514A (en) * | 2016-08-31 | 2017-01-11 | 宁国中奕橡塑有限公司 | Flame-retardant sealing ring for motors of range hoods |
| CN106366374A (en) * | 2016-08-31 | 2017-02-01 | 宁国中奕橡塑有限公司 | Oil-resistant sealing ring for motor of range hood |
| CN106750651A (en) * | 2016-12-14 | 2017-05-31 | 天长市康宁甘油科技有限公司 | A kind of heat-resistant antifriction seal ring rubber material and preparation method thereof |
| CN108822359A (en) * | 2018-07-23 | 2018-11-16 | 安徽立信橡胶科技有限公司 | A kind of modified butadiene acrylonitrile rubber formula |
| CN112552563A (en) * | 2020-12-10 | 2021-03-26 | 镇江市四海轴承有限公司 | High-protection, aging-resistant, oil-resistant and antistatic rubber sealing ring and preparation method thereof |
| CN113440290A (en) * | 2021-07-09 | 2021-09-28 | 上海驻净电子科技有限公司 | Gland sealing piece for tooth flushing device and manufacturing method thereof |
| CN114196085A (en) * | 2022-01-28 | 2022-03-18 | 高科橡塑工业有限公司 | Elastic coupling rubber material |
| CN115214040A (en) * | 2022-07-05 | 2022-10-21 | 贵州红阳机械有限责任公司 | Nitrile rubber and preparation process thereof |
| CN116285038A (en) * | 2023-03-21 | 2023-06-23 | 马鞍山宏力橡胶制品有限公司 | Slewing bearing nitrile-butadiene sealing ring sizing material and application thereof |
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| CN104893029A (en) * | 2014-03-03 | 2015-09-09 | 青岛宝丰盛福华进出口密封件有限公司 | Oil resistant seal ring and preparation method thereof |
| CN104231353A (en) * | 2014-09-17 | 2014-12-24 | 江阴海达橡塑股份有限公司 | Preparation method of wear-resistant rubber |
| CN104231353B (en) * | 2014-09-17 | 2016-01-06 | 江阴海达橡塑股份有限公司 | A kind of preparation method of abrasive rubber |
| CN106146941A (en) * | 2015-04-28 | 2016-11-23 | 安徽华润仪表线缆有限公司 | A kind of nitrile rubber oiliness bearing group sealing member material and preparation method thereof |
| CN106317514A (en) * | 2016-08-31 | 2017-01-11 | 宁国中奕橡塑有限公司 | Flame-retardant sealing ring for motors of range hoods |
| CN106366374A (en) * | 2016-08-31 | 2017-02-01 | 宁国中奕橡塑有限公司 | Oil-resistant sealing ring for motor of range hood |
| CN106750651A (en) * | 2016-12-14 | 2017-05-31 | 天长市康宁甘油科技有限公司 | A kind of heat-resistant antifriction seal ring rubber material and preparation method thereof |
| CN108822359A (en) * | 2018-07-23 | 2018-11-16 | 安徽立信橡胶科技有限公司 | A kind of modified butadiene acrylonitrile rubber formula |
| CN112552563A (en) * | 2020-12-10 | 2021-03-26 | 镇江市四海轴承有限公司 | High-protection, aging-resistant, oil-resistant and antistatic rubber sealing ring and preparation method thereof |
| CN113440290A (en) * | 2021-07-09 | 2021-09-28 | 上海驻净电子科技有限公司 | Gland sealing piece for tooth flushing device and manufacturing method thereof |
| CN114196085A (en) * | 2022-01-28 | 2022-03-18 | 高科橡塑工业有限公司 | Elastic coupling rubber material |
| CN115214040A (en) * | 2022-07-05 | 2022-10-21 | 贵州红阳机械有限责任公司 | Nitrile rubber and preparation process thereof |
| CN116285038A (en) * | 2023-03-21 | 2023-06-23 | 马鞍山宏力橡胶制品有限公司 | Slewing bearing nitrile-butadiene sealing ring sizing material and application thereof |
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