CN103819766B - For the rubber seal and preparation method thereof of drinking water pipeline joint - Google Patents
For the rubber seal and preparation method thereof of drinking water pipeline joint Download PDFInfo
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- CN103819766B CN103819766B CN201410063245.9A CN201410063245A CN103819766B CN 103819766 B CN103819766 B CN 103819766B CN 201410063245 A CN201410063245 A CN 201410063245A CN 103819766 B CN103819766 B CN 103819766B
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Abstract
The invention discloses a kind of rubber seal for drinking water pipeline joint, the weight part of this rubber seal composition comprises: crude rubber 100 parts, vulcanization accelerator TMTD 0.5 ~ 1 part, accelerant CZ 1 ~ 2 part, sulphur S800.5 ~ 1.5 part, antioxidant 264 1 ~ 2 part, 3 ~ 7 parts, zinc oxide, stearic acid 0.5 ~ 1.5 part, 40 ~ 60 parts, calcium carbonate, carbon black N77430 ~ 32 part, carbon black N66060 ~ 65 part, environment-friendly aromatic oil 12 ~ 14 parts, auxiliary agent WB2221.3 ~ 1.5 part; Crude rubber comprises paracril and styrene-butadiene rubber(SBR), and the weight part ratio of paracril and styrene-butadiene rubber(SBR) is 1.9 ~ 2.1.The invention also discloses the preparation method of above-mentioned rubber seal, comprise that crude rubber is plasticated, mixing, sulfuration, deburring obtain finished product step.The rubber seal rings for seal performance that the present invention prepares is good, not easily aging distortion.
Description
Technical field
The present invention relates to rubber seal field, particularly a kind of rubber seal for drinking water pipeline joint and preparation method thereof.
Background technology
Current rubber seal easily because ageing of rubber causes distortion, makes rubber seal not mate with drinking water pipeline adapter connector, thus reduces sealing effectiveness.
And in drinking water pipeline adapter connector, needing to use sealing-ring, current this kind of sealing-ring is generally O RunddichtringO, and its cross section is circular, and sealing effectiveness is not satisfactory.
Summary of the invention
One of technical problem to be solved by this invention is for shortcomings and deficiencies of the prior art, a kind of good sealing effect is provided and can prevent be out of shape the rubber seal for drinking water pipeline joint, to solve the problem.
Two of technical problem to be solved by this invention is for shortcomings and deficiencies of the prior art, provides a kind of preparation method of above-mentioned rubber seal, to solve the problem.
Technical problem solved by the invention can realize by the following technical solutions:
For the rubber seal of drinking water pipeline joint, the weight part composition of this rubber seal comprises:
Crude rubber 100 parts, vulcanization accelerator TMTD 0.5 ~ 1 part, accelerant CZ 1 ~ 2 part, sulphur S800.5 ~ 1.5 part, antioxidant 264 1 ~ 2 part, 3 ~ 7 parts, zinc oxide, stearic acid 0.5 ~ 1.5 part, 40 ~ 60 parts, calcium carbonate, carbon black N77430 ~ 32 part, carbon black N66060 ~ 65 part, environment-friendly aromatic oil 12 ~ 14 parts, auxiliary agent WB2221.3 ~ 1.5 part;
Described crude rubber comprises paracril and styrene-butadiene rubber(SBR), and the weight part ratio of wherein said paracril and described styrene-butadiene rubber(SBR) is 1.9 ~ 2.1.
In a preferred embodiment of the invention, described vulcanization accelerator TMTD is 0.78 part, accelerant CZ is 1.5 parts, sulphur S80 is 1 part, antioxidant 264 is 1.5 parts, zinc oxide is 5 parts, stearic acid is 1 part, calcium carbonate is 50 parts, carbon black N774 is 31 parts, carbon black N660 is 62.5 parts, environment-friendly aromatic oil is 13 parts, auxiliary agent WB222 is 1.4 parts;
The weight part ratio of wherein said paracril and described styrene-butadiene rubber(SBR) is 2.
In a preferred embodiment of the invention, described rubber seal is annular rubber sealing-ring, the outer wall trim of described annular rubber sealing-ring is tapered ramp, and the one side that described annular rubber sealing-ring connects with described tapered ramp is outer convex arc surface.
A preparation method for the above-mentioned rubber seal for drinking water pipeline joint, comprises the steps:
(1) described crude rubber is plasticated, obtain softened rubber;
(2) softened rubber in other components and step (1) is carried out mixing, banburying, extrusion moulding according to the weight of aforementioned formula, obtain unvulcanized work in-process;
(3) be transferred in vulcanizing equipment by the unvulcanized work in-process obtained in step (2) and carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 175 ~ 185 DEG C, sulfuration pressure 15 ~ 19MPa, and curing time 8 ~ 10min, obtains work in-process;
(4) work in-process obtained in step (3) are processed into the sealing-ring of regulation shape on lathe, then repair burr, obtain rubber seal.
Owing to have employed technical scheme as above, the rubber seal that the present invention obtains has good nature, its your A hardness that continues is 75 ± 5 degree, tensile strength >=10.5MPa, tensile yield >=250%, compression set rate≤20%, changes in hardness is 0 ~+5 degree, tensile strength velocity of variation >=-20%, tensile yield velocity of variation >=-30%, volume change is 5Max, and volume change is 0 ~+40%.And the trim of rubber seal of the present invention is tapered ramp, improves sealing effectiveness.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention for the rubber seal of drinking water pipeline joint.
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
Embodiment 1
The weight part composition of the rubber seal of the present embodiment comprises crude rubber 100 parts, vulcanization accelerator TMTD 0.78 part, accelerant CZ 1.5 parts, sulphur S801 part, antioxidant 264 1.5 parts, 5 parts, zinc oxide, stearic acid 1 part, 50 parts, calcium carbonate, carbon black N77431 part, carbon black N66062.5 part, environment-friendly aromatic oil 13 parts, auxiliary agent WB2221.4 part; Crude rubber comprises paracril and styrene-butadiene rubber(SBR), and wherein the weight part ratio of paracril and styrene-butadiene rubber(SBR) is 2:1.
The preparation method of embodiment 1 is as follows:
(1) 100 parts of crude rubbers are plasticated, obtain softened rubber;
(2) softened rubber in other components and step (1) is carried out mixing, banburying, extrusion moulding according to the weight that embodiment 1 is filled a prescription, obtain unvulcanized work in-process;
(3) be transferred in vulcanizing equipment by the unvulcanized work in-process obtained in step (2) and carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 180 DEG C, sulfuration pressure 17MPa, and curing time 9min, obtains work in-process;
(4) work in-process obtained in step (3) are processed into the sealing-ring of regulation shape on lathe, then repair burr, obtain rubber seal.
The technical parameter of the embodiment 1 that aforesaid method obtains is as follows:
Your the A hardness that continues is 78 degree, and tensile strength is 11.6MPa, and tensile yield is 340%, and compression set rate (100 DEG C × 22h × 25%) is 19.7%; Changes in hardness after hot air aging (100 DEG C × 70h) is+5 degree, tensile strength velocity of variation is+12.1%, tensile yield velocity of variation is-29.4%; Volume change after the oil of resistance to ASTMNo.1 (100 DEG C × 70h) is-4.42%, and the volume change after the oil of resistance to ASTMNo.3 (100 DEG C × 70h) is 12.8%.
Embodiment 2
The weight part composition of the rubber seal of the present embodiment comprises crude rubber 100 parts, vulcanization accelerator TMTD 0.5 part, accelerant CZ 1 part, sulphur S800.5 part, antioxidant 264 1 part, 3 parts, zinc oxide, stearic acid 0.5 part, 40 parts, calcium carbonate, carbon black N77430 part, carbon black N66060 part, environment-friendly aromatic oil 12 parts, auxiliary agent WB2221.3 part; Crude rubber comprises paracril and styrene-butadiene rubber(SBR), and wherein the weight part ratio of paracril and styrene-butadiene rubber(SBR) is 1.9.
The preparation method of embodiment 2 is as follows:
(1) 100 parts of crude rubbers are plasticated, obtain softened rubber;
(2) softened rubber in other components and step (1) is carried out mixing, banburying, extrusion moulding according to the weight that embodiment 2 is filled a prescription, obtain unvulcanized work in-process;
(3) be transferred in vulcanizing equipment by the unvulcanized work in-process obtained in step (2) and carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 175 DEG C, sulfuration pressure 15MPa, and curing time 8min, obtains work in-process;
(4) work in-process obtained in step (3) are processed into the sealing-ring of regulation shape on lathe, then repair burr, obtain rubber seal.
Embodiment 3
The weight part composition of the rubber seal of the present embodiment comprises crude rubber 100 parts, vulcanization accelerator TMTD 1 part, accelerant CZ 2 parts, sulphur S801.5 part, antioxidant 264 2 parts, 7 parts, zinc oxide, stearic acid 1.5 parts, 60 parts, calcium carbonate, carbon black N77432 part, carbon black N66065 part, environment-friendly aromatic oil 14 parts, auxiliary agent WB2221.5 part; Crude rubber comprises paracril and styrene-butadiene rubber(SBR), and wherein the weight part ratio of paracril and styrene-butadiene rubber(SBR) is 2.1.
The preparation method of embodiment 3 is as follows:
(1) 100 parts of crude rubbers are plasticated, obtain softened rubber;
(2) softened rubber in other components and step (1) is carried out mixing, banburying, extrusion moulding according to the weight that embodiment 3 is filled a prescription, obtain unvulcanized work in-process;
(3) be transferred in vulcanizing equipment by the unvulcanized work in-process obtained in step (2) and carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 185 DEG C, sulfuration pressure 19MPa, and curing time 10min, obtains work in-process;
(4) work in-process obtained in step (3) are processed into the sealing-ring of regulation shape on lathe, then repair burr, obtain rubber seal.
The technical parameter of above-described embodiment 2 and embodiment 3 is as follows:
Your the A hardness that continues is 75 ± 5 degree, tensile strength >=10.5MPa, tensile yield >=250%, compression set rate (100 DEG C × 22h × 25%)≤20%; Changes in hardness after hot air aging (100 DEG C × 70h) is 0 ~+5 degree, tensile strength velocity of variation >=-20%, tensile yield velocity of variation >=-30%; Volume change after the oil of resistance to ASTMNo.1 (100 DEG C × 70h) is 5Max, and the volume change after the oil of resistance to ASTMNo.3 (100 DEG C × 70h) is 0 ~+40.
Shown in Fig. 1 and Fig. 2, the rubber seal of above-described embodiment 1 to embodiment 3 can be made annular rubber sealing-ring 10, the outer wall trim of annular rubber sealing-ring 10 is tapered ramp 11, and the one side that annular rubber sealing-ring 10 connects with tapered ramp 11 is outer convex arc surface 12.Tapered ramp 11 and outer convex arc surface 12 can fit tightly with drinking water pipeline adapter connector, improve sealing effectiveness.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (1)
1. for the rubber seal of drinking water pipeline joint, it is characterized in that, the weight part composition of this rubber seal comprises:
Crude rubber 100 parts, vulcanization accelerator TMTD are 0.78 part, accelerant CZ is 1.5 parts, sulphur S80 is 1 part, antioxidant 264 is 1.5 parts, zinc oxide is 5 parts, stearic acid is 1 part, calcium carbonate is 50 parts, carbon black N774 is 31 parts, carbon black N660 is 62.5 parts, environment-friendly aromatic oil is 13 parts, auxiliary agent WB222 is 1.4 parts;
Described crude rubber comprises paracril and styrene-butadiene rubber(SBR), and the weight part ratio of wherein said paracril and described styrene-butadiene rubber(SBR) is 2;
Described rubber seal is annular rubber sealing-ring, and the outer wall trim of described annular rubber sealing-ring is tapered ramp, and the one side that described annular rubber sealing-ring connects with described tapered ramp is outer convex arc surface;
Preparation method for the rubber seal of drinking water pipeline joint comprises the steps:
(1) described crude rubber is plasticated, obtain softened rubber;
(2) softened rubber in other components and step (1) is carried out mixing, banburying, extrusion moulding according to the weight of aforementioned formula, obtain unvulcanized work in-process;
(3) the unvulcanized work in-process obtained in step (2) are transferred in vulcanizing equipment carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 175 ~ 185 DEG C, sulfuration pressure 15 ~ 19MPa, curing time 8 ~ 10min, obtains work in-process;
(4) work in-process obtained in step (3) are processed into the sealing-ring of regulation shape on lathe, then repair burr, obtain rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063245.9A CN103819766B (en) | 2014-02-25 | 2014-02-25 | For the rubber seal and preparation method thereof of drinking water pipeline joint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410063245.9A CN103819766B (en) | 2014-02-25 | 2014-02-25 | For the rubber seal and preparation method thereof of drinking water pipeline joint |
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| Publication Number | Publication Date |
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| CN103819766A CN103819766A (en) | 2014-05-28 |
| CN103819766B true CN103819766B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410063245.9A Active CN103819766B (en) | 2014-02-25 | 2014-02-25 | For the rubber seal and preparation method thereof of drinking water pipeline joint |
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| JP6558194B2 (en) * | 2015-10-02 | 2019-08-14 | 株式会社豊田自動織機 | Suction duct in spinning machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202402636U (en) * | 2012-02-03 | 2012-08-29 | 上海平泰橡胶制品有限公司 | Improved rubber sealing ring for joint of connector of drinking water pipe |
| CN102731864A (en) * | 2012-05-30 | 2012-10-17 | 芜湖荣基密封系统有限公司 | Reclaimed nitrile rubber sealing ring material |
| CN102731861A (en) * | 2012-05-30 | 2012-10-17 | 芜湖荣基密封系统有限公司 | Butyronitrile-butylbenzene mixed rubber with high hardness |
| CN103289147A (en) * | 2013-04-26 | 2013-09-11 | 焦作市万瑞轮胎辅料有限公司 | O-shaped rubber sealing ring and production technology thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2946185B2 (en) * | 1995-03-30 | 1999-09-06 | ニチアス株式会社 | Joint sheet and manufacturing method thereof |
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- 2014-02-25 CN CN201410063245.9A patent/CN103819766B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202402636U (en) * | 2012-02-03 | 2012-08-29 | 上海平泰橡胶制品有限公司 | Improved rubber sealing ring for joint of connector of drinking water pipe |
| CN102731864A (en) * | 2012-05-30 | 2012-10-17 | 芜湖荣基密封系统有限公司 | Reclaimed nitrile rubber sealing ring material |
| CN102731861A (en) * | 2012-05-30 | 2012-10-17 | 芜湖荣基密封系统有限公司 | Butyronitrile-butylbenzene mixed rubber with high hardness |
| CN103289147A (en) * | 2013-04-26 | 2013-09-11 | 焦作市万瑞轮胎辅料有限公司 | O-shaped rubber sealing ring and production technology thereof |
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| CN103819766A (en) | 2014-05-28 |
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