CN103408950A - Oilproof high-temperature resistant rubber compound and preparation method thereof - Google Patents
Oilproof high-temperature resistant rubber compound and preparation method thereof Download PDFInfo
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- CN103408950A CN103408950A CN2013103775977A CN201310377597A CN103408950A CN 103408950 A CN103408950 A CN 103408950A CN 2013103775977 A CN2013103775977 A CN 2013103775977A CN 201310377597 A CN201310377597 A CN 201310377597A CN 103408950 A CN103408950 A CN 103408950A
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Abstract
The invention discloses an oilproof high-temperature resistant rubber compound, which is prepared from the following raw materials in parts by weight: 40-70 parts of silicon crude rubber, 30-50 parts of reinforcing agent, 5-15 parts of reinforcing filler surface treating agent and 5-15 parts of plasticizer. The oilproof high-temperature resistant rubber compound provided by the invention has the advantages that a formula and dosage of materials which are capable of controlling the structure of the silicon rubber compound are screened through a lot of experiments, and experimental results indicate that the rubber compound has excellent physical properties such as tear resistance, hardness and deformation resistance, in particular excellent oil resistance and heat resistance, and is wider in application range; besides, the invention provides a preparation method of the oilproof high-temperature resistant rubber compound; the preparation method is rational in process design, high in production efficiency and suitable for industrial production; the prepared rubber compound has excellent physical properties.
Description
Technical field
The present invention relates to a kind of silicon rubber, be specifically related to the high temperature resistant rubber unvulcanizate of a kind of oil resistant, belong to the chemical industry field.
Background technology
The melting silicone rubber that existing production technology is produced, because the white carbon black surface hydroxyl is processed not exclusively, make the wetting property of itself and silicon raw rubber bad, cause the sizing material poor in processability, the sizing material be made into is easily structurizing in the process stored, the sizing material physicals changes greatly, tear resistance is not high, uses this kind melting silicone rubber to make automobile component, and oil resistant and resistance toheat are poor, life cycle is short, and easily quality problems occur.
Therefore necessary on the basis of prior art, a kind of physicals excellence of design research and development, the rubber unvulcanizate of the oil-resisting and heat-resisting excellent performance of sizing material.
Summary of the invention
Goal of the invention: the objective of the invention is in order to solve the deficiencies in the prior art, provides a kind of tear resistance, hardness, the physicals excellences such as resistance to deformation, the rubber unvulcanizate that oil resistant and resistance toheat are good; Another object of the present invention is to provide the preparation method of the high temperature resistant rubber unvulcanizate of oil resistant.
Technical scheme: in order to realize above purpose, the technical scheme that the present invention takes is:
The high temperature resistant rubber unvulcanizate of a kind of oil resistant, it is made by the raw material of following parts by weight:
40～70 parts of silicon raw rubbers, 30 to 50 parts of strengthening agents, 5 to 15 parts of reinforced filling surface treatment agents, 5 to 15 parts, softening agent;
Described silicon raw rubber is methyl ethylene silicon raw rubber (being methyl vinyl silicone rubber), and strengthening agent is thermal silica (being fumed silica), and the reinforced filling surface treatment agent is hexamethyldisilazane, and softening agent is silicone oil.
As preferred version, the high temperature resistant rubber unvulcanizate of above-described oil resistant, it is made by the raw material of following parts by weight:
50～60 parts of silicon raw rubbers, 30 to 40 parts of strengthening agents, 5 to 10 parts of reinforced filling surface treatment agents, 5 to 10 parts, softening agent;
Described silicon raw rubber is the methyl ethylene silicon raw rubber, and strengthening agent is thermal silica, and the reinforced filling surface treatment agent is hexamethyldisilazane, and softening agent is silicone oil.
The present invention processes not exclusively according to white carbon black surface hydroxyl in prior art, and the wetting property of silicon raw rubber is bad, sizing material poor in processability, the shortcoming such as the sizing material be made into is easily structurizing in the process stored, and tear resistance is not high, and the oil resistant resistance to elevated temperatures is poor.The present invention screens composition and the consumption proportion thereof of rubber unvulcanizate by great many of experiments, wherein main composition silicon raw rubber preferable methyl vinyl silicon raw rubber (has excellent demolding performace, shrinking percentage is lower, electrical property is more excellent, has excellent physicals), the preferred thermal silica of strengthening agent (adds thermal silica to be conducive to improve the tensile strength at yield of rubber unvulcanizate, the physicals such as tear strength and electrical property), the preferred hexamethyldisilazane of reinforced filling surface treatment agent (adds hexamethyldisilazane to be conducive to the white carbon black surface hydroxyl is processed fully, greatly improve tear resistance and oil resistant resistance to elevated temperatures), softening agent is preferably silicone oil (adding silicone oil to be conducive to improve the package stability of sizing material), can overcome many deficiencies of prior art.
The preparation method of the high temperature resistant rubber unvulcanizate of oil resistant of the present invention, it comprises the following steps:
(1) get 40～70 parts of silicon raw rubbers, 30 to 50 parts of strengthening agents, 5 to 15 parts of reinforced filling surface treatment agents, 5 to 15 parts, softening agent, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 to 48 hours at 25 ℃ to 35 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 1% to 10% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, make blend glue stuff deliquescing again, the gained sizing material filters through 300 to 350 mesh filter screens, filters and obtains rubber unvulcanizate.
As preferred version, the preparation method of the high temperature resistant rubber unvulcanizate of above-described oil resistant comprises the following steps:
(1) get 40～70 parts of silicon raw rubbers, 30 to 50 parts of strengthening agents, 5 to 15 parts of reinforced filling surface treatment agents, 5 to 15 parts, softening agent, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 2% to 4% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
Described silicon raw rubber is the methyl ethylene silicon raw rubber, and strengthening agent is thermal silica, and the reinforced filling surface treatment agent is hexamethyldisilazane, and softening agent is silicone oil.
As preferred version, the preparation method of the high temperature resistant rubber unvulcanizate of above-described oil resistant, described roller spacing of open rubber refining machine is 12mm.
Beneficial effect: the high temperature resistant rubber unvulcanizate of oil resistant provided by the invention compared with prior art has the following advantages:
1, the high temperature resistant rubber unvulcanizate of oil resistant of the present invention, screen composition and the consumption proportion of the high temperature resistant rubber unvulcanizate of oil resistant by great many of experiments, experimental result shows, has excellent tear resistance, hardness, the physicalies such as resistance to deformation, especially oil resistant and Good Heat-resistance, range of application is more extensive.
2, the preparation method of the high temperature resistant rubber unvulcanizate of oil resistant provided by the invention, technological design is reasonable, and production efficiency is high, the rubber unvulcanizate physicals excellence prepared, the oil-resisting and heat-resisting excellent performance of sizing material.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is not used in and limits the scope of the invention be used to the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
Embodiment 1
1, the preparation method of the high temperature resistant rubber unvulcanizate of oil resistant, it comprises the following steps:
(1) get 60 parts of methyl ethylene silicon raw rubbers, 30 parts of thermal silicas, 6 parts of hexamethyldisilazanes, 6 parts of silicone oil, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 3% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, institute's roller spacing of open rubber refining machine is 12mm, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
2, the preparation method of contrast rubber unvulcanizate, it comprises the following steps:
(1) get 60 parts of methyl ethylene silicon raw rubbers, 30 parts of thermal silicas, 12 parts of silicone oil, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 3% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, roller spacing of open rubber refining machine is 12mm, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
3, contrast experiment
Every detection index of above-mentioned 1 and 2 rubber unvulcanizates that prepare is described in table 1 below:
Every detected result of table 1 rubber unvulcanizate
Embodiment 2
1, the preparation method of the high temperature resistant rubber unvulcanizate of oil resistant, it comprises the following steps:
(1) get 60 parts of methyl ethylene silicon raw rubbers, 40 parts of thermal silicas, 10 parts of hexamethyldisilazanes, 10 parts of silicone oil, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 48 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 3% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, institute's roller spacing of open rubber refining machine is 12mm, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
2, the preparation method of contrast rubber unvulcanizate, it comprises the following steps:
(1) get 60 parts of methyl ethylene silicon raw rubbers, 40 parts of thermal silicas, 20 parts of silicone oil, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 3% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, roller spacing of open rubber refining machine is 12mm, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
3, contrast experiment
Every detection index of above-mentioned 1 and 2 rubber unvulcanizates that prepare is described in table 2 below:
Every detected result of table 2 rubber unvulcanizate
Embodiment 3
1, the preparation method of the high temperature resistant rubber unvulcanizate of oil resistant, it comprises the following steps:
(1) get 70 parts of methyl ethylene silicon raw rubbers, 40 parts of thermal silicas, 10 parts of hexamethyldisilazanes, 10 parts of silicone oil, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 6% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, institute's roller spacing of open rubber refining machine is 12mm, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
2, the preparation method of contrast rubber unvulcanizate, it comprises the following steps:
(1) get 70 parts of methyl ethylene silicon raw rubbers, 40 parts of thermal silicas, 20 parts of silicone oil, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 6% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, roller spacing of open rubber refining machine is 12mm, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
3, contrast experiment
Every detection index of above-mentioned 1 and 2 rubber unvulcanizates that prepare is described in table 3 below:
Every detected result of table 3 rubber unvulcanizate
Embodiment 4
1, the preparation method of the high temperature resistant rubber unvulcanizate of oil resistant, it comprises the following steps:
(1) get 40 parts of methyl ethylene silicon raw rubbers, 30 parts of thermal silicas, 5 parts of hexamethyldisilazanes, 5 parts of silicone oil, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 4% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, institute's roller spacing of open rubber refining machine is 12mm, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
2, the preparation method of contrast rubber unvulcanizate, it comprises the following steps:
(1) get 40 parts of methyl ethylene silicon raw rubbers, 30 parts of thermal silicas, 10 parts of silicone oil, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 4% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, roller spacing of open rubber refining machine is 12mm, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
3, contrast experiment
Every detection index of above-mentioned 1 and 2 rubber unvulcanizates that prepare is described in table 4 below:
Every detected result of table 4 rubber unvulcanizate
By above experimental result, show, the high temperature resistant rubber unvulcanizate of oil resistant provided by the invention, have excellent hardness, anti tear, the physicals such as not yielding, and show that by high temperature resistant and oil resistant experimental result rubber unvulcanizate provided by the invention has excellent physicals under high temperature or oil environment, have wide range of applications, have great importance.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the high temperature resistant rubber unvulcanizate of oil resistant, is characterized in that, it is made by the raw material of following parts by weight:
40 ~ 70 parts of silicon raw rubbers, 30 to 50 parts of strengthening agents, 5 to 15 parts of reinforced filling surface treatment agents, 5 to 15 parts, softening agent;
Described silicon raw rubber is the methyl ethylene silicon raw rubber, and strengthening agent is thermal silica, and the reinforced filling surface treatment agent is hexamethyldisilazane, and softening agent is silicone oil.
2. the high temperature resistant rubber unvulcanizate of oil resistant according to claim 1, is characterized in that, it is made by the raw material of following parts by weight:
50 ~ 60 parts of silicon raw rubbers, 30 to 40 parts of strengthening agents, 5 to 10 parts of reinforced filling surface treatment agents, 5 to 10 parts, softening agent;
Described silicon raw rubber is the methyl ethylene silicon raw rubber, and strengthening agent is thermal silica, and the reinforced filling surface treatment agent is hexamethyldisilazane, and softening agent is silicone oil.
3. the preparation method of the high temperature resistant rubber unvulcanizate of oil resistant claimed in claim 1, is characterized in that, comprises the following steps:
(1) get 40 ~ 70 parts of silicon raw rubbers, 30 to 50 parts of strengthening agents, 5 to 15 parts of reinforced filling surface treatment agents, 5 to 15 parts, softening agent, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 to 48 hours at 25 ℃ to 35 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 1% to 10% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, make blend glue stuff deliquescing again, the gained sizing material filters through 300 to 350 mesh filter screens, filters and obtains rubber unvulcanizate.
4. the preparation method of the high temperature resistant rubber unvulcanizate of oil resistant according to claim 3, is characterized in that, comprises the following steps:
(1) get 40 ~ 70 parts of silicon raw rubbers, 30 to 50 parts of strengthening agents, 5 to 15 parts of reinforced filling surface treatment agents, 5 to 15 parts, softening agent, mediate and mix by internal rubber mixer; Sizing material discharging by kneaded, obtain sizing;
(2) sizing is standing 24 hours at 25 ℃;
(3) get the basic glue that step (2) prepares, add the hexamethyldisilazane of basic glue 2% to 4% parts by weight to be kneaded into agglomerate and obtain sizing material, then the sizing material back mixing of using opening rubber mixing machine to mix, make blend glue stuff deliquescing again, the gained sizing material filters through 350 mesh filter screens, filters and obtains rubber unvulcanizate.
5. according to the preparation method of the high temperature resistant rubber unvulcanizate of the described oil resistant of claim 3 or 4, it is characterized in that, described silicon raw rubber is the methyl ethylene silicon raw rubber, and strengthening agent is thermal silica, the reinforced filling surface treatment agent is hexamethyldisilazane, and softening agent is silicone oil.
6. according to the preparation method of the high temperature resistant rubber unvulcanizate of the described oil resistant of claim 3 or 4, it is characterized in that, described roller spacing of open rubber refining machine is 12mm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665892A (en) * | 2013-12-13 | 2014-03-26 | 苏州华东橡胶工业有限公司 | Heat-resistant and oil-resistant rubber pipe |
| CN106589963A (en) * | 2016-12-09 | 2017-04-26 | 南阳天密封股份有限公司 | High-temperature-resistant silicone rubber gasket and preparation process thereof |
| CN108342085A (en) * | 2018-03-21 | 2018-07-31 | 东莞市正安有机硅科技有限公司 | A kind of heat safe silicon compounded rubber stock and preparation method thereof |
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| CN101775220A (en) * | 2010-01-08 | 2010-07-14 | 东爵有机硅(南京)有限公司 | Method for preparing electric insulating glue |
| CN103131192A (en) * | 2013-03-26 | 2013-06-05 | 东莞中硅新材料科技有限公司 | Liquid silicone rubber base sizing material and preparation method thereof as well as organic silicon coating using sizing material and preparation method thereof |
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- 2013-08-26 CN CN2013103775977A patent/CN103408950A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101775220A (en) * | 2010-01-08 | 2010-07-14 | 东爵有机硅(南京)有限公司 | Method for preparing electric insulating glue |
| CN103131192A (en) * | 2013-03-26 | 2013-06-05 | 东莞中硅新材料科技有限公司 | Liquid silicone rubber base sizing material and preparation method thereof as well as organic silicon coating using sizing material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665892A (en) * | 2013-12-13 | 2014-03-26 | 苏州华东橡胶工业有限公司 | Heat-resistant and oil-resistant rubber pipe |
| CN106589963A (en) * | 2016-12-09 | 2017-04-26 | 南阳天密封股份有限公司 | High-temperature-resistant silicone rubber gasket and preparation process thereof |
| CN108342085A (en) * | 2018-03-21 | 2018-07-31 | 东莞市正安有机硅科技有限公司 | A kind of heat safe silicon compounded rubber stock and preparation method thereof |
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Application publication date: 20131127 |