CN105778304A - EPDM (Ethylene-Propylene-Diene Monomer) for sealing ring and vulcanization method thereof - Google Patents
EPDM (Ethylene-Propylene-Diene Monomer) for sealing ring and vulcanization method thereof Download PDFInfo
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- CN105778304A CN105778304A CN201610195247.2A CN201610195247A CN105778304A CN 105778304 A CN105778304 A CN 105778304A CN 201610195247 A CN201610195247 A CN 201610195247A CN 105778304 A CN105778304 A CN 105778304A
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- sealing ring
- rubber
- oil
- ethylene propylene
- propylene diene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/06—Sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to EPDM (Ethylene-Propylene-Diene Monomer) for a sealing ring and a vulcanization method thereof. The EPDM for the sealing ring comprises the following components: non-oil-filled raw ethylene-propylene rubber, oil-filled raw ethylene-propylene rubber, ZnO, an anti-aging agent, general purpose black, sulfur, flavorless DCP and a cross-linking agent TAIC. In the cross-linking process, both C-C bonds and S cross-linking bonds are contained, the compression deformation rate is low, and the tear resistance is improved; the oil-filled raw ethylene-propylene rubber and the non-oil-filled raw ethylene-propylene rubber can be combined, so that the compression deformation performance is guaranteed, usage of plasticizer oil in the formula is reduced, and the rubber is easily and uniformly mixed and is high in liquidity, thin in rubber edge and easy to tear; and moreover, the product has the advantage that peroxide vulcanizedethylene-propylene rubber is low in permanent compression deformation rate, and the problem that peroxide vulcanizedEPDM products are difficult to tear is solved, so that the performance and production efficiency of the product are improved.
Description
Technical field
The invention belongs to field of rubber technology, relate to a kind of sealing ring ethylene propylene diene rubber and vulcanization process thereof.
Background technology
At present, in the production process of rubber, the compression set performance of sizing material directly affects the sealing property of sealing ring
And service life, also it is such for EPT rubber packing circle.Use sulfur or the ethylene-propylene-diene monomer of SE curing system
Glue, its compression deformation rate is big, poor durability；Use peroxide or the ethylene propylene diene rubber of other vulcanizing system, although it is resistance to
Good by property, compression deformation rate can reach 15% even below, but c-c cross-bond bond energy is high and degree of cross linking height goods are tear-resistant
Property poor, production technology is very poor, sealing ring goods deburring after sulfuration trouble, is very easy to tear to product, causes outside product
Seeing defect, percent defective is high.For this reason, it may be necessary to a kind of sealing ring ethylene propylene diene rubber and vulcanization process thereof, solve in prior art
Existing compression deformation rate is big, and poor durability, resistance to tearing is poor, and production technology is very poor, and the sealing ring goods after sulfuration are repaiied
Limit bothers, and is very easy to tear and arrives product, causes product appearance defect, the problems such as percent defective is high.
Summary of the invention
The present invention provides a kind of sealing ring ethylene propylene diene rubber and vulcanization process thereof, solves the compression in the presence of prior art and becomes
Form quotient is big, poor durability, and resistance to tearing is poor, and production technology is very poor, the sealing ring goods deburring trouble after sulfuration, holds very much
The problems such as easily tear is to product, causes product appearance defect, and percent defective is high.
For achieving the above object, the present invention provides a kind of sealing ring ethylene propylene diene rubber, comprises following component: non-oil-filled second third
Glue rubber, oil-filled second the third glue rubber, ZnO, age resistor, Universal carbon black, sulfur, tasteless DCP, cross-linking agent TAIC.
In above scheme preferably, sulfur and peroxide blending vulcanization system are used.
It may also be preferred that peroxide vulcanizing agent uses cumyl peroxide.
It may also be preferred that the parts by weight of each component are: non-oil-filled second the third glue rubber 50-60 part；Oil-filled second the third glue rubber
50-80 part (according to oil-filled amount)；ZnO 5 parts；Age resistor 1-2 part；Universal carbon black 60-80 part (according to hardness)；Sulfur
0.5-1.5 part, tasteless DCP 2.5-3.5 part；Cross-linking agent TAIC 0.5-1 part.
It may also be preferred that sealing ring ethylene propylene diene rubber uses, compounding process is mixing to be made.
It may also be preferred that described rubber compression deformation rate is less than 15%.
The present invention also provides for the vulcanization process of a kind of sealing ring ethylene propylene diene rubber, comprises the steps: the first step, clears up mould
Tool, puts compound blank, matched moulds；Second step, enters vulcanizing equipment after mould matched moulds, vulcanizing equipment progressive die, before upper pressure time
Between be set between 5s-8s；3rd step, mould rising is complete will bear upper pressure during pressure, rise to pressure spike within 2s
Value；4th step, mould unloading.
Compared with prior art, the invention have the advantages that
The sealing ring ethylene propylene diene rubber of the present invention and vulcanization process thereof, it is possible to solve the compression in the presence of prior art
Rate is big, poor durability, and resistance to tearing is poor, and production technology is very poor, the sealing ring goods deburring trouble after sulfuration, is very easy to
The problems such as tear, to product, causes product appearance defect, and percent defective is high.It makes rubber compression deformation rate by adjusting use ratio
It is not higher than 15%, and cross-linking process contains S cross-bond tear resistance and improved；It uses oil-filled EP rubbers with the most oil-filled
EP rubbers use, not only ensure compression performance but also decrease the use of plasticizer oils and fats in formula, rubber easy mixing uniformly,
Good fluidity, glue limit is thin, and torn edges is easier to；The advantage that its product existing peroxide cure second the third glue laminated compression permanent deformation rate is low,
Solve again peroxide cure ethylene propylene diene rubber goods torn edges difficult problem so that properties of product get both with production efficiency.
Accompanying drawing explanation
The invention will be further described with embodiment below in conjunction with the accompanying drawings:
Fig. 1 is the process chart of the vulcanization process of the sealing ring ethylene propylene diene rubber of the present invention.
Detailed description of the invention
In order to be more fully understood that the present invention, below in conjunction with specific embodiment, the present invention is explained in detail.It is clear that can be right
The present invention carries out different modification and remodeling and without departing from the broader spirit and scope of the present invention of appended claims.Therefore,
Following example have exemplary and do not have conditional implication.
Embodiment 1:
A kind of sealing ring ethylene propylene diene rubber, comprises following component: non-oil-filled second the third glue rubber, oil-filled second the third glue rubber, ZnO,
Age resistor, Universal carbon black, sulfur, tasteless DCP, cross-linking agent TAIC.Use sulfur and peroxide blending vulcanization system.
Peroxide vulcanizing agent uses cumyl peroxide.Sealing ring ethylene propylene diene rubber uses that compounding process is mixing makes.Described
Rubber compression deformation rate is less than 15%.The parts by weight of each component are: non-oil-filled second the third glue rubber 50 parts；Oil-filled second the third glue is raw
50 parts of glue (according to oil-filled amount)；ZnO 5 parts；1 part of age resistor；Universal carbon black 60 parts (according to hardness)；Sulfur 0.5
Part, tasteless DCP 2.5 parts；Cross-linking agent TAIC 0.5 part.
Embodiment 2:
A kind of sealing ring ethylene propylene diene rubber, similar to Example 1, except that, the parts by weight of each component are: non-
Oil-filled second the third glue rubber 60 parts；Oil-filled second the third glue rubber 80 parts (according to oil-filled amount)；ZnO 5 parts；2 parts of age resistor；Logical
With white carbon black 80 parts (according to hardness)；1.5 parts of sulfur, tasteless DCP 3.5 parts；Cross-linking agent TAIC 1 part.
Embodiment 2:
A kind of sealing ring ethylene propylene diene rubber, similar to Example 1, except that, the parts by weight of each component are: non-
Oil-filled second the third glue rubber 55 parts；Oil-filled second the third glue rubber 65 parts (according to oil-filled amount)；ZnO 5 parts；1.5 parts of age resistor；
Universal carbon black 70 parts (according to hardness)；1 part of sulfur, tasteless DCP 3 parts；Cross-linking agent TAIC 0.8 part.
Embodiment 4:
The vulcanization process of a kind of sealing ring ethylene propylene diene rubber, comprises the steps: the first step, clears up mould, puts compound blank,
Matched moulds；Second step, enters vulcanizing equipment, vulcanizing equipment progressive die after mould matched moulds, the time before upper pressure is set between 5s；
3rd step, mould rising is complete will bear upper pressure during pressure, rise to pressure peak within 2s；4th step, mould unloading.
Embodiment 5:
The vulcanization process of a kind of sealing ring ethylene propylene diene rubber, comprises the steps: the first step, clears up mould, puts compound blank,
Matched moulds；Second step, enters vulcanizing equipment, vulcanizing equipment progressive die after mould matched moulds, the time before upper pressure is set between 5s；
3rd step, mould rising is complete will bear upper pressure during pressure, rise to pressure peak within 2s；4th step, mould unloading.
Embodiment 6:
The vulcanization process of a kind of sealing ring ethylene propylene diene rubber, comprises the steps: the first step, clears up mould, puts compound blank,
Matched moulds；Second step, enters vulcanizing equipment, vulcanizing equipment progressive die after mould matched moulds, the time before upper pressure is set between 7s；
3rd step, mould rising is complete will bear upper pressure during pressure, rise to pressure peak within 2s；4th step, mould unloading.
The sealing ring ethylene propylene diene rubber of the present invention and vulcanization process thereof, TAIC is Triallyl isocyanurate, described rubber
Compression deformation rate is less than 15%, and the 0 shape easy torn edges of sealing ring goods.In the second step of described vulcanization process, mould matched moulds with
Rear entrance vulcanizing equipment, vulcanizing equipment uses progressive die at a slow speed, the time before upper pressure to be set between 5s-8s；In 3rd step, mould
Have when rising is complete will bear pressure and use upper pressure, within 2s, rise to pressure peak；In 4th step, mould unloading.Will
Semi-finished product after mould unloading carry out torn edges both deflashing processes and easily operate, the easy torn edges of product.
The sealing ring ethylene propylene diene rubber of the present invention and vulcanization process thereof, the easy torn edges of product using this formula to produce and compressing
Deformation rate is less than 15%, and good manufacturability, tear percent defective is extremely low.The goods using this technique to produce are more easy to torn edges.Its sealing ring
Following component is comprised: non-oil-filled second the third glue rubber 50～60 parts with ethylene propylene diene rubber；Oil-filled second the third glue rubber 50～80 parts of (roots
According to oil-filled amount)；ZnO 5 parts；Age resistor 1～2 parts；Universal carbon black 60～80 parts (according to hardness)；Sulfur 0.5～1.5 parts,
Tasteless DCP 2.5～3.5 parts；(above component, all in terms of parts by weight, uses conventional compounding process for cross-linking agent TAIC 0.5～1 part
Mixing).It uses sulfur and peroxide blending vulcanization system, makes rubber compression deformation rate not higher than by adjusting use ratio
15%, and cross-linking process contains S cross-bond tear resistance and improved；It uses oil-filled EP rubbers and the most oil-filled EP rubbers
And use, not only ensure compression performance but also decrease the use of plasticizer oils and fats in formula, rubber easy mixing uniformly, good fluidity,
Glue limit is thin, and torn edges is easier to；Its vulcanization process comprises the steps: the first step, clears up mould, puts compound blank, matched moulds；The
Two steps, access arrangement after mould matched moulds, on equipment, the process before pressure at a slow speed, is set in during this period of time between 5s-8s, makes
Sizing material fully softens；3rd step, mould rises and complete just rises to maximum pressure with the fastest speed when will bear pressure, this
Section is within the time is set in 2s, it is ensured that apply maximum pressure in sizing material optimal flow state, and product cavity filling is solid and goods glue
Limit is the thinnest.It is mould unloading after certain temperature-time pressure, it is not necessary to post-cure.Its mould uphill process at a slow speed, on equipment
Pressing through journey quick, sizing material fully softens and does not starts to cross-link mobility most preferably, and product cavity filling is solid, glue limit at mould typing
The thinnest, goods are more easy to torn edges.
Although below various preferred implementations and feature to the present invention are described, but at the mesh without departing from the present invention
And on the premise of objective, the present invention can be made and many change, supplements, changes and delete by those of ordinary skill in the art.
The detailed description done above in association with the specific embodiment of the present invention, is not limitation of the present invention.Every skill according to the present invention
Art essence, to any simple modification made for any of the above embodiments, all still falls within the scope of technical solution of the present invention.
Table one show sizing material report.
Table one:
Claims (7)
1. a sealing ring ethylene propylene diene rubber, comprises following component: non-oil-filled second the third glue rubber, oil-filled second the third glue rubber,
ZnO, age resistor, Universal carbon black, sulfur, tasteless DCP, cross-linking agent TAIC.
2. sealing ring ethylene propylene diene rubber as claimed in claim 1, it is characterised in that: use sulfur and peroxide and use
Vulcanizing system.
3. sealing ring ethylene propylene diene rubber as claimed in claim 2, it is characterised in that: peroxide vulcanizing agent uses peroxide
Change diisopropylbenzene (DIPB).
4. the sealing ring ethylene propylene diene rubber as according to any one of claim 1-3, it is characterised in that: the weight of each component
Number is: non-oil-filled second the third glue rubber 50-60 part；Oil-filled second the third glue rubber 50-0 part；ZnO 5 parts；Age resistor 1-2
Part；Universal carbon black 60-80 part；Sulfur 0.5-.5 part, tasteless DCP 2.5-3.5 part；Cross-linking agent TAIC 0.5-1 part.
5. the sealing ring ethylene propylene diene rubber as according to any one of claim 1-3, it is characterised in that: sealing ring ternary
EP rubbers uses that compounding process is mixing makes.
6. sealing ring ethylene propylene diene rubber as claimed in claim 5, it is characterised in that: described rubber compression deformation rate is less than
15%.
7. a vulcanization process for sealing ring ethylene propylene diene rubber, comprises the steps: the first step, clears up mould, puts glue
Base, matched moulds；Second step, enters vulcanizing equipment, vulcanizing equipment progressive die after mould matched moulds, the time before upper pressure is set in 5s-8s
Between；3rd step, mould rising is complete will bear upper pressure during pressure, rise to pressure peak within 2s；4th step, unloads
Mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610195247.2A CN105778304A (en) | 2016-03-31 | 2016-03-31 | EPDM (Ethylene-Propylene-Diene Monomer) for sealing ring and vulcanization method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610195247.2A CN105778304A (en) | 2016-03-31 | 2016-03-31 | EPDM (Ethylene-Propylene-Diene Monomer) for sealing ring and vulcanization method thereof |
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| CN105778304A true CN105778304A (en) | 2016-07-20 |
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| CN201610195247.2A Pending CN105778304A (en) | 2016-03-31 | 2016-03-31 | EPDM (Ethylene-Propylene-Diene Monomer) for sealing ring and vulcanization method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106674770A (en) * | 2017-01-24 | 2017-05-17 | 新兴铸管股份有限公司 | Long-life pipe rubber sealing element and preparation method thereof |
| CN106832609A (en) * | 2017-01-12 | 2017-06-13 | 南京利德东方橡塑科技有限公司 | A kind of resistance to braking fluid, low compression set EPT rubber composition and preparation method thereof |
| CN108084573A (en) * | 2017-12-08 | 2018-05-29 | 安徽京鸿密封件技术有限公司 | A kind of effective sealing ring of air conditioning for automobiles draining |
| CN108864576A (en) * | 2018-06-19 | 2018-11-23 | 咸阳三精科技股份有限公司 | Fire-retardant anti-third sizing material of bloom second and preparation method thereof |
| CN112126166A (en) * | 2020-09-29 | 2020-12-25 | 一汽解放汽车有限公司 | Ethylene propylene diene monomer composition, rubber tube, and preparation method and application thereof |
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| CN102585379A (en) * | 2011-01-13 | 2012-07-18 | 北京橡胶工业研究设计院 | Ethylene propylene diene rubber composition and preparation method |
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2016
- 2016-03-31 CN CN201610195247.2A patent/CN105778304A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585379A (en) * | 2011-01-13 | 2012-07-18 | 北京橡胶工业研究设计院 | Ethylene propylene diene rubber composition and preparation method |
Non-Patent Citations (2)
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| 化学工业出版社编写: "《中国化工产品大全 第三版 上卷》", 31 January 2005 * |
| 李永河 主编: "《橡胶硫化技术》", 31 May 2012 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106832609A (en) * | 2017-01-12 | 2017-06-13 | 南京利德东方橡塑科技有限公司 | A kind of resistance to braking fluid, low compression set EPT rubber composition and preparation method thereof |
| CN106674770A (en) * | 2017-01-24 | 2017-05-17 | 新兴铸管股份有限公司 | Long-life pipe rubber sealing element and preparation method thereof |
| CN108084573A (en) * | 2017-12-08 | 2018-05-29 | 安徽京鸿密封件技术有限公司 | A kind of effective sealing ring of air conditioning for automobiles draining |
| CN108864576A (en) * | 2018-06-19 | 2018-11-23 | 咸阳三精科技股份有限公司 | Fire-retardant anti-third sizing material of bloom second and preparation method thereof |
| CN112126166A (en) * | 2020-09-29 | 2020-12-25 | 一汽解放汽车有限公司 | Ethylene propylene diene monomer composition, rubber tube, and preparation method and application thereof |
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Application publication date: 20160720 |