CN103819766A - Rubber sealing ring for drinking water pipe joint and preparation method - Google Patents
Rubber sealing ring for drinking water pipe joint and preparation method Download PDFInfo
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- CN103819766A CN103819766A CN201410063245.9A CN201410063245A CN103819766A CN 103819766 A CN103819766 A CN 103819766A CN 201410063245 A CN201410063245 A CN 201410063245A CN 103819766 A CN103819766 A CN 103819766A
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Abstract
The invention discloses a rubber sealing ring for a drinking water pipe joint. The rubber sealing ring is composed of the following components, by weight, 100 parts of a raw material rubber, 0.5-1 part of a vulcanization accelerator TMTD, 1-2 parts of an accelerant CZ, 0.5-1.5 parts of sulphur S80, 1-2 parts of an anti-aging agent, 3-7 parts of zinc oxide, 0.5-1.5 parts of eleaostearic acid, 40-60 parts of calcium carbonate, 30-32 parts of carbon black N774, 60-65 parts of carbon black N660, 12-14 parts of environment-friendly aromatic oil and 1.3-1.5 parts of an auxiliary agent WB222. The raw material rubber comprises nitrile rubber and styrene-butadiene rubber, and the weight part ratio of nitrile rubber to styrene-butadiene rubber is 1.9-2.1. The invention also discloses a preparation method of the above rubber sealing ring, comprising steps of raw material rubber plastication, mixing, vulcanization and trimming to obtain a finished product. The prepared rubber sealing ring has good sealing performance and is not easy to age and deform.
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, thereby reduces sealing effectiveness.
And in drinking water pipeline adapter connector, need to use sealing-ring, and this class sealing-ring is generally O RunddichtringO at present, 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 prevents the rubber seal for drinking water pipeline joint of being out of shape, to address the above problem.
Two of technical problem to be solved by this invention is for shortcomings and deficiencies of the prior art, and a kind of preparation method of above-mentioned rubber seal is provided, to address the above 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:
100 parts of crude rubbers, 0.5～1 part of vulcanization accelerator TMTD, 1～2 part of accelerant CZ, sulphur S800.5～1.5 part, 1～2 part of antioxidant 264,3～7 parts, zinc oxide, 0.5～1.5 part of stearic acid, 40～60 parts, calcium carbonate, carbon black N77430～32 part, carbon black N66060～65 part, 12～14 parts of environment-friendly aromatic oils, 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 that 0.78 part, accelerant CZ are that 1.5 parts, sulphur S80 are that 1 part, antioxidant 264 are that 1.5 parts, zinc oxide are that 5 parts, stearic acid are that 1 part, calcium carbonate are that 50 parts, carbon black N774 are that 31 parts, carbon black N660 are that 62.5 parts, environment-friendly aromatic oil are that 13 parts, auxiliary agent WB222 are 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 wedge shape inclined-plane, and the one side that described annular rubber sealing-ring and described wedge shape inclined-plane join 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 to mixing, banburying, extrusion moulding according to the weight part proportioning of aforementioned formula, obtain unvulcanized work in-process;
(3) the unvulcanized work in-process that obtain in step (2) are transferred in vulcanizing equipment and carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 175～185 ℃, sulfuration pressure 15～19MPa, and curing time 8～10min, obtains work in-process;
(4) on lathe, the work in-process that obtain in step (3) are processed into the sealing-ring of regulation shape, then repair burr, obtain rubber seal.
Owing to having adopted technical scheme as above, the rubber seal that the present invention makes 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 wedge shape inclined-plane, has improved 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, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
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
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Embodiment 1
The weight part composition of the rubber seal of the present embodiment comprises 100 parts of crude rubbers, 0.78 part of vulcanization accelerator TMTD, 1.5 parts of accelerant CZs, sulphur S801 part, 1.5 parts of antioxidant 264s, 5 parts, zinc oxide, 1 part of stearic acid, 50 parts, calcium carbonate, carbon black N77431 part, carbon black N66062.5 part, 13 parts of environment-friendly aromatic oils, 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) that the weight part proportioning of the softened rubber in other components and step (1) being filled a prescription according to embodiment 1 is carried out is mixing, banburying, extrusion moulding, obtains unvulcanized work in-process;
(3) the unvulcanized work in-process that obtain in step (2) are transferred in vulcanizing equipment and carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 180 ℃, sulfuration pressure 17MPa, and curing time 9min, obtains work in-process;
(4) on lathe, the work in-process that obtain in step (3) are processed into the sealing-ring of regulation shape, then repair burr, obtain rubber seal.
The technical parameter of the embodiment 1 that aforesaid method makes 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 ℃ × 22h × 25%) is 19.7%; Changes in hardness after hot air aging (100 ℃ × 70h) be+5 degree, tensile strength velocity of variation for+12.1%, tensile yield velocity of variation is-29.4%; Volume change after the No.1 of resistance to ASTM oil (100 ℃ × 70h) is-4.42%, and the volume change after the No.3 of resistance to ASTM oil (100 ℃ × 70h) is 12.8%.
Embodiment 2
The weight part composition of the rubber seal of the present embodiment comprises 100 parts of crude rubbers, 0.5 part of vulcanization accelerator TMTD, 1 part of accelerant CZ, sulphur S800.5 part, 1 part of antioxidant 264,3 parts, zinc oxide, 0.5 part of stearic acid, 40 parts, calcium carbonate, carbon black N77430 part, carbon black N66060 part, 12 parts of environment-friendly aromatic oils, 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) that the weight part proportioning of the softened rubber in other components and step (1) being filled a prescription according to embodiment 2 is carried out is mixing, banburying, extrusion moulding, obtains unvulcanized work in-process;
(3) the unvulcanized work in-process that obtain in step (2) are transferred in vulcanizing equipment and carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 175 ℃, sulfuration pressure 15MPa, and curing time 8min, obtains work in-process;
(4) on lathe, the work in-process that obtain in step (3) are processed into the sealing-ring of regulation shape, then repair burr, obtain rubber seal.
Embodiment 3
The weight part composition of the rubber seal of the present embodiment comprises 100 parts of crude rubbers, 1 part of vulcanization accelerator TMTD, 2 parts of accelerant CZs, sulphur S801.5 part, 2 parts of antioxidant 264s, 7 parts, zinc oxide, 1.5 parts of stearic acid, 60 parts, calcium carbonate, carbon black N77432 part, carbon black N66065 part, 14 parts of environment-friendly aromatic oils, 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) that the weight part proportioning of the softened rubber in other components and step (1) being filled a prescription according to embodiment 3 is carried out is mixing, banburying, extrusion moulding, obtains unvulcanized work in-process;
(3) the unvulcanized work in-process that obtain in step (2) are transferred in vulcanizing equipment and carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 185 ℃, sulfuration pressure 19MPa, and curing time 10min, obtains work in-process;
(4) on lathe, the work in-process that obtain in step (3) are processed into the sealing-ring of regulation shape, 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 ℃ × 22h × 25%)≤20%; Changes in hardness after hot air aging (100 ℃ × 70h) is 0～+ 5 degree, tensile strength velocity of variation >=-20%, tensile yield velocity of variation >=-30%; Volume change after the No.1 of resistance to ASTM oil (100 ℃ × 70h) is 5Max, and the volume change after the No.3 of resistance to ASTM oil (100 ℃ × 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 to annular rubber sealing-ring 10, the outer wall trim of annular rubber sealing-ring 10 is wedge shape inclined-plane 11, and annular rubber sealing-ring 10 is outer convex arc surface 12 with the one side that wedge shape inclined-plane 11 joins.Wedge shape inclined-plane 11 and outer convex arc surface 12 can fit tightly with drinking water pipeline adapter connector, improve sealing effectiveness.
More than show and described 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; that in above-described embodiment and specification sheets, describes 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.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. for the rubber seal of drinking water pipeline joint, it is characterized in that, the weight part composition of this rubber seal comprises:
100 parts of crude rubbers, 0.5～1 part of vulcanization accelerator TMTD, 1～2 part of accelerant CZ, sulphur S800.5～1.5 part, 1～2 part of antioxidant 264,3～7 parts, zinc oxide, 0.5～1.5 part of stearic acid, 40～60 parts, calcium carbonate, carbon black N77430～32 part, carbon black N66060～65 part, 12～14 parts of environment-friendly aromatic oils, 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.
2. the rubber seal for drinking water pipeline joint as claimed in claim 1, it is characterized in that, described vulcanization accelerator TMTD is that 0.78 part, accelerant CZ are that 1.5 parts, sulphur S80 are that 1 part, antioxidant 264 are that 1.5 parts, zinc oxide are that 5 parts, stearic acid are that 1 part, calcium carbonate are that 50 parts, carbon black N774 are that 31 parts, carbon black N660 are that 62.5 parts, environment-friendly aromatic oil are that 13 parts, auxiliary agent WB222 are 1.4 parts;
The weight part ratio of wherein said paracril and described styrene-butadiene rubber(SBR) is 2.
3. the rubber seal for drinking water pipeline joint as claimed in claim 1 or 2, it is characterized in that, described rubber seal is annular rubber sealing-ring, the outer wall trim of described annular rubber sealing-ring is wedge shape inclined-plane, and the one side that described annular rubber sealing-ring and described wedge shape inclined-plane join is outer convex arc surface.
4. a preparation method for the rubber seal for drinking water pipeline joint as described in claims 1 to 3, is characterized in that, comprises the steps:
(1) described crude rubber is plasticated, obtain softened rubber;
(2) softened rubber in other components and step (1) is carried out to mixing, banburying, extrusion moulding according to the weight part proportioning of aforementioned formula, obtain unvulcanized work in-process;
(3) the unvulcanized work in-process that obtain in step (2) are transferred in vulcanizing equipment and carry out sulfidizing, wherein, the curing temperature in described vulcanizing equipment is 175～185 ℃, sulfuration pressure 15～19MPa, and curing time 8～10min, obtains work in-process;
(4) on lathe, the work in-process that obtain in step (3) are processed into the sealing-ring of regulation shape, 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN103819766A true CN103819766A (en) | 2014-05-28 |
| CN103819766B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106811841A (en) * | 2015-10-02 | 2017-06-09 | 株式会社丰田自动织机 | Attraction pipeline in spinning machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08269249A (en) * | 1995-03-30 | 1996-10-15 | Nichias Corp | Joint sheet and its production |
| 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 |
-
2014
- 2014-02-25 CN CN201410063245.9A patent/CN103819766B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08269249A (en) * | 1995-03-30 | 1996-10-15 | Nichias Corp | Joint sheet and its production |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 谢忠麟等: "《橡胶制品实用配方大全》", 30 April 2001 * |
| 谢忠麟等: "《橡胶制品实用配方大全》", 30 April 2001, article "橡胶制品实用配方" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106811841A (en) * | 2015-10-02 | 2017-06-09 | 株式会社丰田自动织机 | Attraction pipeline in spinning machine |
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| CN103819766B (en) | 2016-03-23 |
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