CN103408811B - Ultra-large mud pump shaft L-shaped sealing element rubber - Google Patents
Ultra-large mud pump shaft L-shaped sealing element rubber Download PDFInfo
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- CN103408811B CN103408811B CN201310282369.1A CN201310282369A CN103408811B CN 103408811 B CN103408811 B CN 103408811B CN 201310282369 A CN201310282369 A CN 201310282369A CN 103408811 B CN103408811 B CN 103408811B
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Abstract
The invention relates to an ultra-large mud pump shaft L-shaped sealing element rubber which is prepared from butadiene-acrylonitrile rubber 220, sulfur, accelerator, peroxide, auxiliary crosslinking agent, nano zinc oxide, zinc stearate, anti-aging agent, carbon black, process oil DOP and microcrystalline wax. The invention has the advantages of high wear resistance, high strength, high pressure resistance, shock resistance and deformation resistance, and is superior to the foreign products; the service life is obviously prolonged, reaching 300 days; the performance indexes are far beyond the Chinese Standard; especially the compression deformation, which is the elastic recovery capacity after long-time stress of the rubber material, is the main index for judging the sealing property; and the Chinese technical level of the compression deformation is just or slightly beyond the Chinese Standard, but the compression deformation of the invention is down to 10 below.
Description
Technical field
The invention belongs to field of sealing technology, relate to the sealing member of slush pump pump shaft, especially a kind of ultra-large type slush pump pump shaft L-type seal piece size.
Background technology
What Dredge Pump's Wellendichtring adopted is L-type sealing member, is sediment and slurry because of snagboat by tactile medium, environment for use is severe, damage type shows serious wear, lip is torn, waist ruptures, life-span generally at about 7 days, dependence on import for a long time, imported product (German IHC produce), General Life at about 10 days, product-free standard.
By retrieval, find following two sections of relevant patent documents:
1, a kind of high durometer rubber seal piece size (CN102993478A), its rubber raw materials component and weight proportion be chosen as 1# natural rubber 120 ~ 150 parts, 2 ~ 3 parts, sulphur, 4 ~ 6 parts, zinc oxide, stearic acid 2 ~ 4 parts, 1 ~ 1.2 part, paraffin,? the Chinese name of Stockholm tar 10 ~ 12 parts, spray carbon black 80 ~ 100 parts, thermally oxidized black 20 ~ 40 parts, altax: 2,2'-dithio Dibenzo thiazole, molecular formula: C14H8N2S4? 1 ~ 1.2 part, the Chinese name of antioxidant D: N-phenyl-2-naphthylamine, molecular formula: C16H13N? 1 ~ 1.2 part.
2, a kind of oil-resisting heat-resisting seal piece size and preparation method thereof (CN102585315A), the weight part of its constitutive material is: fourth NBR360675-85, NBR270775-85, sulphur 0.7-0.9, magnesium oxide 3-4, zinc oxide 7-9, Zinic stearas 1-2, anti-aging agent RD 2-4, antioxidant MB 1-2, Microcrystalline Wax 1.5-1.7, rubber processing aids WB2121.7-1.9, carbon black N55095-105, carbon black N33048-52, dioctyl ester 55-65, altax 2.3-2.5, Vulcanization accelerator TMTD 1.5-1.7, acceterator TE TD1.5-1.7.
Contrasted by technical characteristic, above-mentioned patent document and the present patent application have relatively big difference.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, propose a kind of high abrasion, high strength, high pressure resistant, shock-resistant, deformation resistant, life-span long ultra-large type slush pump pump shaft L-type seal piece size.
The object of the invention is to be achieved through the following technical solutions:
A kind of ultra-large type slush pump pump shaft L-type seal piece size, its raw material is formed and parts by weight are respectively:
And described promotor is the mixture of promotor TT and accelerant CZ, and its parts by weight are respectively promotor TT0.5-2, accelerant CZ 0.5-1.5.
And described anti-aging agent is the mixture of anti-aging agent RD and antioxidant 4010NA, and its parts by weight are respectively anti-aging agent RD 1-2, antioxidant 4010NA 1-2.
And described carbon black is the mixture of carbon black N550, carbon black N660 and carbon black N990, and its parts by weight are respectively carbon black N550 30-50, carbon black N660 30-50, carbon black N990 20-40.
Advantage of the present invention and positively effect are:
1, the present invention is owing to superoxide and adding of glue connection auxiliary agent making sizing material unvulcanized part, molecule in sulfidation join auxiliary agent by superoxide and glue and be sulfided into C=C double bond chain, thus make this sizing material almost complete cure define more stable molecular structure, effect clearly, makes this sizing material reach the effect of high abrasion, high strength, high pressure resistant, shock-resistant, deformation resistant.
2, high abrasion of the present invention, high strength, high pressure resistant, shock-resistant, deformation resistant, be better than external product, improve work-ing life obviously, reach 300 days, property indices all far beyond GB, particularly compression set, namely elastomeric material stressed for a long time after elastic recovery capability, be the leading indicator of sealing property quality, domestic state of the art namely reaches or slightly above GB, and the present invention is minimum in compression set reaches less than 10.
Embodiment
Below by specific embodiment, the present invention is described in further detail.It should be noted that, the present embodiment is descriptive, is not determinate, can not limit protection scope of the present invention with this.
Embodiment 1:
A kind of ultra-large type slush pump pump shaft L-type seal piece size, its raw material form and parts by weight as follows:
The preparation method of the present embodiment comprises the steps:
(1) banburying: paracril raw material is put into Banbury mixer, heat 25 minutes gradually, when temperature reaches 110 DEG C, Banbury mixer starts to discharge broken-(down)rubber, in mill bottom sheet after discharge, parks, cools 24 hours;
(2) mixing: above-mentioned cooled broken-(down)rubber is joined in Banbury mixer again, add nano zine oxide, Zinic stearas (SA), anti-aging agent class (anti-aging agent RD and anti-aging agent (4010NA)), Microcrystalline Wax, additional crosslinker (is silicon 69, effect is vulcanization of rubber auxiliary agent), after mixing 3 minutes, wherein mixing by adding at twice after three kinds of carbon black mixing again, the Adding Way of carbon black is: first add 2/3 carbon black mixing 2 minutes, add residue 1/3 carbon black again, turn refining 3 minutes, add dioctyl ester again after fully mixing 3 minutes, when temperature reaches 85 DEG C, start discharge, in mill bottom sheet after the mixing materials discharge formed, cooled and stored more than 4 hours is for subsequent use.
(3) sulfuration: above-mentioned mixing materials is dropped in mill, then sulphur, promotor class (two promotor mixing) are added in rubber unvulcanizate, thin-pass 3-5 is all over can bottom sheet deposit, and sizing material is prepared complete, for subsequent use.
(4) before putting into production use, control the processing temperature of mill at 80 DEG C, then add dibenzoyl peroxide, evenly rear thin-pass to be mixed 3 times, can form finished product, for subsequent use.
Embodiment 2:
A kind of ultra-large type slush pump pump shaft L-type seal piece size, its raw material form and parts by weight as follows:
The preparation method of the present embodiment comprises the steps
(1) banburying: paracril raw material is put into Banbury mixer, heat 15 minutes gradually, when temperature reaches 120 DEG C, Banbury mixer starts to discharge broken-(down)rubber, in mill bottom sheet after discharge, parks, cools 24 hours;
(2) mixing: above-mentioned cooled broken-(down)rubber is joined in Banbury mixer again, add nano zine oxide, Zinic stearas, anti-aging agent class (anti-aging agent RD and anti-aging agent (4010NA)), Microcrystalline Wax, additional crosslinker (effect is vulcanization of rubber auxiliary agent), after mixing 4 minutes, wherein mixing by adding at twice after three kinds of carbon black mixing again, the Adding Way of carbon black is: first add 2/3 carbon black mixing 3 minutes, add residue 1/3 carbon black again, turn refining 2 minutes, add dioctyl ester again after fully mixing 3 minutes, when temperature reaches 90 DEG C, start discharge, in mill bottom sheet after the mixing materials discharge formed, cooled and stored more than 4 hours is for subsequent use.
(3) sulfuration: above-mentioned mixing materials is dropped in mill, then sulphur, promotor class (two promotor mixing) are added in rubber unvulcanizate, thin-pass 3-5 is all over can bottom sheet deposit, and sizing material is prepared complete, for subsequent use.
(4) before putting into production use, control the processing temperature of mill at 80 DEG C, then add dibenzoyl peroxide, evenly rear thin-pass to be mixed 3 times, can form finished product, for subsequent use.
Main performance index measured data of the present invention and domestic general sealing article standard as follows:
| Oil sealing GB | L-type sealing measured performance | ||
| Tensile strength at yield | 12MPa | Tensile strength at yield | 19MPa |
| Elongation | 150％ | Elongation | 350％ |
| Hardness | 70±5 | Hardness | 70 |
| Aging | ≥75±5 | Aging | ≥73 |
| Compression set | ≤40 | Compression set | ≤10 |
| Media-resistant | Water, mineral oil | Media-resistant | Seawater |
Claims (2)
1. a ultra-large type slush pump pump shaft L-type seal piece size, is characterized in that: its raw material is formed and parts by weight are respectively:
And described promotor is the mixture of promotor TT and accelerant CZ, its parts by weight are respectively promotor TT 0.5-2, accelerant CZ 0.5-1.5;
Described carbon black is the mixture of carbon black N550, carbon black N660 and carbon black N990, and its parts by weight are respectively carbon black N550 30-50, carbon black N660 30-50, carbon black N990 20-40.
2. a kind of ultra-large type slush pump pump shaft L-type seal piece size according to claim 1, is characterized in that: described anti-aging agent is the mixture of anti-aging agent RD and antioxidant 4010NA, and its parts by weight are respectively anti-aging agent RD 1-2, antioxidant 4010NA 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282369.1A CN103408811B (en) | 2013-07-08 | 2013-07-08 | Ultra-large mud pump shaft L-shaped sealing element rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310282369.1A CN103408811B (en) | 2013-07-08 | 2013-07-08 | Ultra-large mud pump shaft L-shaped sealing element rubber |
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| Publication Number | Publication Date |
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| CN103408811A CN103408811A (en) | 2013-11-27 |
| CN103408811B true CN103408811B (en) | 2015-07-15 |
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| CN201310282369.1A Active CN103408811B (en) | 2013-07-08 | 2013-07-08 | Ultra-large mud pump shaft L-shaped sealing element rubber |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756041A (en) * | 2013-12-13 | 2014-04-30 | 芜湖佳诚电子科技有限公司 | High impact-resistance rubber seal cup material |
| CN104151641A (en) * | 2014-07-15 | 2014-11-19 | 宁国天运橡塑制品有限公司 | Oil-resistant sealing ring |
| CN104163955A (en) * | 2014-07-16 | 2014-11-26 | 宁国天运橡塑制品有限公司 | Automotive damping rubber |
| CN104761768A (en) * | 2015-04-22 | 2015-07-08 | 深圳科创新源工业材料有限公司 | Cold-contraction type cable terminal waterproof antifouling attachment and manufacturing method thereof |
| CN111100340B (en) * | 2019-12-12 | 2022-05-31 | 中交上海航道装备工业有限公司 | Dredge pump and high-pressure flushing pump shaft seal rubber seal ring and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717531A (en) * | 2009-11-25 | 2010-06-02 | 青岛开世密封工业有限公司 | Sealing sleeve for locomotive damper and preparation method thereof |
| CN101891907A (en) * | 2010-07-14 | 2010-11-24 | 西南石油大学 | Multifunctional nano-ZnO reinforced rubber |
| CN102167852A (en) * | 2010-02-26 | 2011-08-31 | 储俊华 | Fire-retardant and wear-resisting rubber composition |
| CN102336936A (en) * | 2010-07-14 | 2012-02-01 | 江苏华阳重工科技股份有限公司 | Rubber for ship sealing rings |
-
2013
- 2013-07-08 CN CN201310282369.1A patent/CN103408811B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717531A (en) * | 2009-11-25 | 2010-06-02 | 青岛开世密封工业有限公司 | Sealing sleeve for locomotive damper and preparation method thereof |
| CN102167852A (en) * | 2010-02-26 | 2011-08-31 | 储俊华 | Fire-retardant and wear-resisting rubber composition |
| CN101891907A (en) * | 2010-07-14 | 2010-11-24 | 西南石油大学 | Multifunctional nano-ZnO reinforced rubber |
| CN102336936A (en) * | 2010-07-14 | 2012-02-01 | 江苏华阳重工科技股份有限公司 | Rubber for ship sealing rings |
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| CN103408811A (en) | 2013-11-27 |
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