CN101665605A - Oil-proof formula of low-swelling ethylene propylene rubber intake hose - Google Patents
Oil-proof formula of low-swelling ethylene propylene rubber intake hose Download PDFInfo
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- CN101665605A CN101665605A CN200910070497A CN200910070497A CN101665605A CN 101665605 A CN101665605 A CN 101665605A CN 200910070497 A CN200910070497 A CN 200910070497A CN 200910070497 A CN200910070497 A CN 200910070497A CN 101665605 A CN101665605 A CN 101665605A
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Abstract
The invention relates to an oil-proof formula of a low-swelling ethylene propylene rubber intake hose, which comprises the following components in parts by weight: 200 EPDM (K4551A), 90-120 fast extruding carbon soot (N550), 60-90 semi-reinforcing carbon soot (N774), 40-60 ganister sand B-66, 0.5-1.5 CTP-80, 5-10 zinc oxide, 1-3 stearic acid, 2-2.4 compound accelerator GA, 0.8-1.2 sulfur and 1-3 2,2,4-trimethyl-1,2-dihydroquinoline polymer (RD). Compared with the traditional formula, the invention has the advantages that since 100 parts of EPDM K4551A and the compound accelerator GA are adopted to improve the oil-proof performance of the ethylene propylene rubber, the EPDM is suitable for production of the intake hose with a glue injection technology, thereby enhancing the service life ofthe intake hose and better satisfying the requirements of heat resistance and oil resistance to vehicle intake hoses.
Description
Technical field
The present invention relates to the sebific duct technical field, particularly adopt glue-injection techniques method to make motor car engine low-swelling ethylene propylene (LS-EPDM) gas inlet rubber tube oil-proof formula.
Background technology
Itself belongs to non-polar rubber EPDM, do not have anti-patience for general nonpolar mineral oil and fuel oil, and can be lost efficacy by the serious swelling of such oil, this also is the greatest drawback of EPDM rubber on performance. rubber is selected the trade mark of high molecular, high ethylene content, high ENB content for use, though essence that can not radical change EPDM rubber oil-proofness difference, but swelling capacity is reduced to some extent. vulcanization system has effect little to improving oil-proofness, but improve cross-linking density and can slow down the swelling action of oils to a certain extent, swelling capacity is reduced.
At present, the inlet pipe material adopts terpolymer EP rubber (EPDM) and butyronitrile PVC blend glue more, also has the part vehicle to adopt ethylene propylene acid esters rubber (AEM) and chloropharin glue (ECO).Because air induction hose links to each other with the engine pipe connecting, must have unburnt oil gas to return in the sebific duct, therefore require this pipe to have certain oil-proofness; Simultaneously, because rubber hose is arranged near the engine, high-temperature zone just is so also will have good heat-resisting, heat resistance.General EPDM oil-proofness is poor, NBR/PVC temperature tolerance deficiency, and AEM, ECO cost an arm and a leg.Above material all has certain use to lack limit and restriction, and therefore, the oil-proofness of improvement EPDM is made the automotive air intake hose material to solution and had great significance.
Summary of the invention
Low-swelling ethylene propylene (LS-EPDM) has better weather, ozone resistance, good temperature tolerance (130 ℃) and is equivalent to the oil-proofness of chloroprene rubber, and relative low price.Compare with other material, LS-EPDM satisfies the material and the performance requriements of automotive air intake flexible pipe fully, and good manufacturability is fit to adopt injecting glue technology to make the engine charge flexible pipe.Product surface is Xin's oil, no blooming not, and the cost performance excellence is a kind of ideal material of making the automotive air intake flexible pipe.But be not directly to use, need study and test that selecting suitable vulcanizing agent and strengthening agent simultaneously also is one of content of studying of the present invention.
Ethylene-propylene rubber(EPR) is unsaturated rubber, and general common sulfur cross-linking system, peroxide vulcanizing system all can be to its effective sulfurations.
Ethylene-propylene rubber(EPR) peroxide vulcanizing system characteristics, its vulcanization rate is very fast, product heat resistance height, compression set is little.Though the peroxide cure material property is good, hot tear crack is poor, is not suitable for injection molding technique and makes air induction hose;
The common vulcanization system of ethylene-propylene rubber(EPR) is used relatively early, is to vulcanize between high temperature, short time in the characteristics of injecting glue technology, and the bloom phenomenon appears in product easily.
In recent years, next chemical company of Shanghai section has released and has adopted advanced foreign technology to research and develop the NEW TYPE OF COMPOSITE vulcanization accelerator GA of production voluntarily, be combined into by original plurality of raw materials and only use a kind of promotor, be the special-purpose promotor of EPDM rubber, cooperate with a small amount of Sulfur, cure efficiency is good, and bloom does not appear in product.Can be applicable to the sulfuration of injecting glue technology.This kind system rubber unvulcanizate vulcanization rate is very fast, and the physicals of cross-linked rubber is good, and heat-resisting oxygen, ozone ageing, oil resistance are good.
Air induction hose mostly is crooked bellows structure, and one or more arms are arranged, compression molding is unfavorable for that sizing material mold filling, exhaust problem are difficult for the demoulding, therefore should adopt injection molding technique, this just requires, and the sizing material time of scorch is long, mold filling is fast, and peroxide cure glue is easy to incipient scorch, the bad injection molding that can't be applied to product of hot tear crack because of it.The compound vulcanizing agent GA that the present invention adds has better vulcanization characteristics and over-all properties, and the product no blooming is a comparatively ideal vulcanizing agent of EPDM sizing material.
EPDM K4551A has filled 100 parts of paraffin oils, Mooney viscosity value (ML
1+4125 ℃) be 43-48, ethylene content 60.4-64%.EPDM K4551A itself has filled 100 parts of paraffin oils, has just added any tenderizer no longer in addition in the prescription, this oil-filled ethylene-propylene rubber(EPR), and process industrial art performance is good, be difficult for to surperficial Xin's oil, and resistance to elevated temperatures is good.Because EPDM is a kind of non-from reinforcement rubber, need have reinforcement system just can reach tensile strength preferably.Its reinforcing and filling system is similar to conventional rubber, and strengthening agent is based on carbon black, extrudes soon that black-reinforced is effective, injection flow good, and semi-reinforcing hydrocarbon black and silica flour B-66 are alkalescence and can fill in a large number, and the three obtains corresponding required hardness by regulating proportioning.Remove the heat resistanceheat resistant tear resistance that silica flour B-66 in addition can also improve EPDM.
Through experiment and research many times, the component of LS-EPDM oil-proof formula of the present invention and mass fraction prescription are as follows:
200 parts of EPDM (K4551A)
Fast carbon black (N550) 90～120 parts that extrude
60～90 parts of semi-reinforcing hydrocarbon blacks (N774)
40～60 parts of silica flour B-66
0.5～1.5 part of CTP-80
5～10 parts in zinc oxide
1～3 part of hard ester acid
2～2.4 parts of compound accelerant GA
0.8～1.2 part of Sulfur
2,2,4-trimethylammonium-1,1～3 part of 2-dihydro quinoline woods polymer (RD).
Wherein: the main raw material(s) source is:
LS-EPDM rubber (Dutch DSM N. V.)
Silica flour B-66 (the Fuyang general chemical industry of profit company limited)
GA (next chemical industry company limited of Shanghai section).
Adopt the gas inlet rubber tube of low swelling EPDM oil-proof formula preparation of the present invention, use through automobile, can obtain best material property, tensile strength is greater than 10.0MPa, tensile yield is greater than 200%, resistance toheat life-time service temperature reaches 130 ℃, and the C of anti-fuel oil the, No.3, volume change improve the technological operation of .EPDM injecting glue greatly than conventional formulation and stablize, thereby can satisfy heat-resisting, the grease-proof requirement of automotive air intake sebific duct better.
Embodiment
Embodiment 1:
200 parts of EPDM K4551A
120 parts of N550
60 parts of N774
40 parts of silica flour B-66
1.5 parts of CTP-80
5 parts in zinc oxide
1 part of stearic acid
2 parts of GA
1.2 parts of Sulfurs
1 part of RD.
Oil resistance is as follows:
(23 ℃ * 48h) volume change 64.86% of the C of anti-the fuel oil
(125 ℃ * 70h) volume change 65.07 of anti-No.3.
Embodiment 2:
200 parts of EPDM K4551A
90 parts of N550
90 parts of N774
60 parts of silica flour B-66
0.5 part of CTP-80
10 parts in zinc oxide
3 parts of stearic acid
2.4 parts of GA
0.8 part of Sulfur
3 parts of RD.
Oil resistance is as follows:
(23 ℃ * 48h) volume change 63.37% of the C of anti-the fuel oil
(125 ℃ * 70h) volume change 65.28% of anti-No.3
Embodiment 3:
200 parts of EPDM K4551A
115 parts of N550
75 parts of N774
50 parts of silica flour B-66
1 part of CTP-80
8 parts in zinc oxide
2 parts of stearic acid
2.2 parts of GA
1 part of Sulfur
2 parts of RD.
Oil resistance is as follows:
(23 ℃ * 48h) volume change 66.25% of the C of anti-the fuel oil
(125 ℃ * 70h) volume change 64.83% of anti-No.3.
Embodiment 4:
200 parts of EPDM K4551A
100 parts of N550
80 parts of N774
60 parts of silica flour B-66
1 part of CTP-80
5 parts in zinc oxide
2 parts of stearic acid
2 parts of GA
1 part of Sulfur
2 parts of RD.
Oil resistance is as follows:
(23 ℃ * 48h) volume change 65.43% of the C of anti-the fuel oil
(125 ℃ * 70h) volume change 66.72% of anti-No.3.
Embodiment 5:
200 parts of EPDM K4551A
110 parts of N550
75 parts of N774
50 parts of silica flour B-66
1.5 parts of CTP-80
8 parts in zinc oxide
3 parts of stearic acid
2 parts of GA
0.8 part of Sulfur
1 part of RD.
Oil resistance is as follows:
(23 ℃ * 48h) volume change 64.54% of the C of anti-the fuel oil
(125 ℃ * 70h) volume change 65.18% of anti-No.3.
Claims (1)
1. oil-proof formula of low-swelling ethylene propylene rubber intake hose is characterized in that component and mass fraction are as follows:
200 parts of EPDM (K4551A),
Fast carbon black (N550) 90～120 parts that extrude,
60～90 parts of semi-reinforcing hydrocarbon blacks (N774),
40～60 parts of silica flour B-66,
0.5～1.5 part of CTP-80,
5～10 parts in zinc oxide,
1～3 part of hard ester acid,
2～2.4 parts of compound accelerant GA,
0.8～1.2 part of Sulfur,
2,2,4-trimethylammonium-1,1～3 part of 2-dihydro quinoline woods polymer (RD).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910070497A CN101665605A (en) | 2009-09-18 | 2009-09-18 | Oil-proof formula of low-swelling ethylene propylene rubber intake hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910070497A CN101665605A (en) | 2009-09-18 | 2009-09-18 | Oil-proof formula of low-swelling ethylene propylene rubber intake hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101665605A true CN101665605A (en) | 2010-03-10 |
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|---|---|---|---|
| CN200910070497A Pending CN101665605A (en) | 2009-09-18 | 2009-09-18 | Oil-proof formula of low-swelling ethylene propylene rubber intake hose |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516670A (en) * | 2011-11-02 | 2012-06-27 | 天津鹏翎胶管股份有限公司 | Rubber composition capable of resisting expansibility of synthetic brake fluid of motor vehicle |
| CN103724836A (en) * | 2013-12-13 | 2014-04-16 | 芜湖佳诚电子科技有限公司 | High-plasticization rubber power hose material |
| CN103724827A (en) * | 2013-12-13 | 2014-04-16 | 芜湖佳诚电子科技有限公司 | Automobile air conditioning expansion valve series seal ring |
| CN104387679A (en) * | 2014-11-19 | 2015-03-04 | 天津鹏翎胶管股份有限公司 | High-oil-resistance ethylene propylene diene monomer rubber composition |
| CN105273322A (en) * | 2015-08-18 | 2016-01-27 | 苏州国泰科技发展有限公司 | Automobile rubber hose modified rubber material and preparation method thereof |
| CN107759909A (en) * | 2017-12-15 | 2018-03-06 | 阜阳市利普化工有限公司 | A kind of formula of ethylene propylene terpolymer with of resistance to fuel oil |
| CN115678126A (en) * | 2022-10-11 | 2023-02-03 | 江阴市鸿萌橡塑制品有限公司 | Blood-gas needle rubber plug and preparation method thereof |
-
2009
- 2009-09-18 CN CN200910070497A patent/CN101665605A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516670A (en) * | 2011-11-02 | 2012-06-27 | 天津鹏翎胶管股份有限公司 | Rubber composition capable of resisting expansibility of synthetic brake fluid of motor vehicle |
| CN102516670B (en) * | 2011-11-02 | 2013-04-03 | 天津鹏翎胶管股份有限公司 | Rubber composition capable of resisting expansibility of synthetic brake fluid of motor vehicle |
| CN103724836A (en) * | 2013-12-13 | 2014-04-16 | 芜湖佳诚电子科技有限公司 | High-plasticization rubber power hose material |
| CN103724827A (en) * | 2013-12-13 | 2014-04-16 | 芜湖佳诚电子科技有限公司 | Automobile air conditioning expansion valve series seal ring |
| CN104387679A (en) * | 2014-11-19 | 2015-03-04 | 天津鹏翎胶管股份有限公司 | High-oil-resistance ethylene propylene diene monomer rubber composition |
| CN105273322A (en) * | 2015-08-18 | 2016-01-27 | 苏州国泰科技发展有限公司 | Automobile rubber hose modified rubber material and preparation method thereof |
| CN105273322B (en) * | 2015-08-18 | 2018-02-16 | 苏州国泰科技发展有限公司 | A kind of automotive hose modified rubber material and preparation method thereof |
| CN107759909A (en) * | 2017-12-15 | 2018-03-06 | 阜阳市利普化工有限公司 | A kind of formula of ethylene propylene terpolymer with of resistance to fuel oil |
| CN115678126A (en) * | 2022-10-11 | 2023-02-03 | 江阴市鸿萌橡塑制品有限公司 | Blood-gas needle rubber plug and preparation method thereof |
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Application publication date: 20100310 |