CN104693612A - Sealing gasket for piston tube of single-knife hydraulic rubber cutting machine - Google Patents
Sealing gasket for piston tube of single-knife hydraulic rubber cutting machine Download PDFInfo
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- CN104693612A CN104693612A CN201310667334.XA CN201310667334A CN104693612A CN 104693612 A CN104693612 A CN 104693612A CN 201310667334 A CN201310667334 A CN 201310667334A CN 104693612 A CN104693612 A CN 104693612A
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- parts
- piston tube
- ring
- rubber
- hydraulic rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a sealing gasket for a piston tube of a single-knife hydraulic rubber cutting machine. The sealing gasket is prepared from the following components in parts by mass: 100 parts of ethylene-propylene-diene monomer rubber, 10 parts of zinc oxide, 0.2-0.6 part of stearic acid, 2-3 parts of a vulcanizing agent DCP, 1-2 parts of an anti-aging agent D, 8-10 parts of plasticizer, 2-5 parts of pine tar, 2-4 parts of HAF carbon black, 2-4 parts of an accelerant D, 1 part of paraffin and 3-4 parts of a softener. The sealing gasket has the characteristics of excellent acid and alkali resistance, can be used for effectively preventing aging caused by corrosion of acid and alkali, has good elasticity and compression restorability and excellent abrasion resistance, can be used for preventing damage caused by friction of the piston tube, and is suitable for the piston tube of a single-knife hydraulic rubber cutting machine.
Description
Technical field
The present invention relates to a kind of sealing-ring, specifically relate to a kind of for hilted broadsword hydraulic rubber cutter piston tube sealing-ring.
Background technology
Piston rod packing circle is also known as flower bud shape sealing-ring, and be a kind ofly press from both sides rubber ring in fabric rubber ring and lip by Y shape and suppress the unidirectional solid sealing-ring be bonded, its operating pressure can reach 60MPa, and pressure can not add back-up ring lower than during 30MPa.Be applicable to hydraulic cylinder piston rod to-and-fro movement tightness system, also can be used for the static seal device of flange end cap.
Though the cross section structure of piston rod packing circle is different, sealing mechanism is basically identical.Under pressure, by the distortion on sealing-ring top, generation stretching-stress under compression around sealing lip, this just makes sealing lip be pushed to metallic surface, produces contact stress.Along with the increase of liquid pressure, sealing lip limit shape value also increases thereupon, and contact pressure also just increases, and so just produces self-styled effect.Make flower bud shape sealing-ring under stationary state with no pressure, also can keep sealing, then require that sealed lip is provided with certain interference in advance, namely sealed lip cross section is wider than the width of groove, sealing-ring is in cylinder sleeve groove, first sealing lip is subject to Tension and Compression, produces prestress thus, by medium-tight.Here it is, and flower bud shape encloses the reason sealed under zero-pressure and high pressure.
Summary of the invention
The present invention relates to a kind of for hilted broadsword hydraulic rubber cutter piston tube sealing-ring, it has good resistance to acids and bases, effectively can prevent acid and alkali corrosion and the sealing-ring that causes is aging.
Of the present invention for hilted broadsword hydraulic rubber cutter piston tube sealing-ring by following formula form and quality component coordinate form: terpolymer EP rubber 100 parts, 10 parts, zinc oxide, stearic acid 0.2 ~ 0.6 part, vulcanizing agent DCP2 ~ 3 part, antioxidant D 1 ~ 2 part, 8 ~ 10 parts, softening agent, Stockholm tar 2 ~ 5 parts, HAF carbon black 2 ~ 4 parts, vulkacit D 2 ~ 4 parts, 1 part, paraffin, tenderizer 3 ~ 4 parts.
Preferably, a kind of for hilted broadsword hydraulic rubber cutter piston tube sealing-ring, it is characterized in that, each component material and mass fraction thereof are: terpolymer EP rubber 100 parts, 10 parts, zinc oxide, stearic acid 0.3 ~ 0.5 part, vulcanizing agent DCP2.2 ~ 2.8 part, antioxidant D 0.5 ~ 0.8 part, 8.3 ~ 9.6 parts, softening agent, Stockholm tar 2.5 ~ 5 parts, HAF carbon black 2.5 ~ 4 parts, vulkacit D 2 ~ 3.5 parts, 1 part, paraffin, tenderizer 2.3 ~ 3.5 parts.
A kind of manner of formulation for hilted broadsword hydraulic rubber cutter piston tube sealing-ring is: added by terpolymer EP rubber in reactor, and inflated with nitrogen is protected, and then adds other materials; carry out banburying; treat that banburying is shaping through vulcanizing agent sulfuration, can rubber item be obtained, then through deburring integer.
Of the present invention have good resistance to acids and bases for hilted broadsword hydraulic rubber cutter piston tube sealing-ring, effectively can prevent acid and alkali corrosion and the sealing-ring caused is aging, and have good elasticity and compression recovery, there is excellent wear resistance, the sealing-ring damage that can prevent the friction because of piston tube from causing.
Embodiment
Embodiment 1:
Of the present invention for hilted broadsword hydraulic rubber cutter piston tube sealing-ring composition of raw materials and parts by weight as follows:
Terpolymer EP rubber 100 parts, 10 parts, zinc oxide, stearic acid 0.3 part, vulcanizing agent DCP2.5 part, antioxidant D 1.2 parts, Plasticizer DBP 2.5 parts, softening agent DOS6.1 part, Stockholm tar 3 parts, HAF carbon black 2 parts, vulkacit D 3 parts, 1 part, paraffin, tenderizer 3.2 parts.
A kind of manner of formulation for hilted broadsword hydraulic rubber cutter piston tube sealing-ring is: added by terpolymer EP rubber in reactor, and inflated with nitrogen is protected, and then adds other materials; carry out banburying; treat that banburying is shaping through vulcanizing agent sulfuration, can rubber item be obtained, then through deburring integer.
In above-described embodiment, apply rational quality proportioning, the product obtained has good resistance to acids and bases, effectively can prevent acid and alkali corrosion and the sealing-ring caused is aging.
Embodiment 2:
Of the present invention for hilted broadsword hydraulic rubber cutter piston tube sealing-ring composition of raw materials and parts by weight as follows:
Terpolymer EP rubber 100 parts, 10 parts, zinc oxide, stearic acid 0.4 part, vulcanizing agent DCP2.2 part, antioxidant D 1.3 parts, Plasticizer DBP 8.5 parts, Stockholm tar 3.6 parts, HAF carbon black 3 parts, vulkacit D 3.5 parts, 1 part, paraffin, tenderizer 3.6 parts.
Manner of formulation for hilted broadsword hydraulic rubber cutter piston tube sealing-ring is identical with embodiment 1.
In above-described embodiment, have changed mass fraction and the material composition of each material, the present invention has good elasticity and compression recovery.
Embodiment 3:
Of the present invention for hilted broadsword hydraulic rubber cutter piston tube sealing-ring composition of raw materials and parts by weight as follows:
Terpolymer EP rubber 100 parts, 10 parts, zinc oxide, stearic acid 0.35 part, vulcanizing agent DCP2.6 part, antioxidant D 0.6 part, 8.7 parts, softening agent, Stockholm tar 3.2 parts, HAF carbon black 3 parts, vulkacit D 2.8 parts, 1 part, paraffin, tenderizer 2.9 parts.
Manner of formulation for hilted broadsword hydraulic rubber cutter piston tube sealing-ring is identical with embodiment 1.
In above-described embodiment, change the mass fraction of each material, this product has excellent wear resistance, and the sealing-ring damage that can prevent the friction because of piston tube from causing, is applicable to hilted broadsword hydraulic rubber cutter piston tube.
In sum, the present invention has good resistance to acids and bases, effectively can prevent acid and alkali corrosion and the sealing-ring caused is aging, and have good elasticity and compression recovery, there is excellent wear resistance, the sealing-ring damage that can prevent the friction because of piston tube from causing, is applicable to hilted broadsword hydraulic rubber cutter piston tube.
Invention can be understood further by the invention process given above; above embodiment is only several specific embodiment of the present invention; but design concept of the present invention is not limited thereto; all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading scope.
Claims (4)
1. for a hilted broadsword hydraulic rubber cutter piston tube sealing-ring, it is characterized in that, each component material and mass fraction thereof are: terpolymer EP rubber 100 parts, 10 parts, zinc oxide, stearic acid 0.2 ~ 0.6 part, vulcanizing agent DCP2 ~ 3 part, antioxidant D 1 ~ 2 part, 8 ~ 10 parts, softening agent, Stockholm tar 2 ~ 5 parts, HAF carbon black 2 ~ 4 parts, vulkacit D 2 ~ 4 parts, 1 part, paraffin, tenderizer 3 ~ 4 parts.
2. according to claim 1 for hilted broadsword hydraulic rubber cutter piston tube sealing-ring, it is characterized in that: described softening agent be softening agent DPB and softening agent DOS or both one of.
3. according to claim 1 for hilted broadsword hydraulic rubber cutter piston tube sealing-ring, it is characterized in that: each component material and mass fraction thereof are: terpolymer EP rubber 100 parts, 10 parts, zinc oxide, stearic acid 0.3 ~ 0.5 part, vulcanizing agent DCP2.2 ~ 2.8 part, antioxidant D 0.5 ~ 0.8 part, 8.3 ~ 9.6 parts, softening agent, Stockholm tar 2.5 ~ 5 parts, HAF carbon black 2.5 ~ 4 parts, vulkacit D 2 ~ 3.5 parts, 1 part, paraffin, tenderizer 2.3 ~ 3.5 parts.
4. according to claim 1 for hilted broadsword hydraulic rubber cutter piston tube sealing-ring; it is characterized in that manner of formulation is: added by terpolymer EP rubber in reactor; inflated with nitrogen is protected; then other materials are added; carry out banburying; treat that banburying is shaping through vulcanizing agent sulfuration, can rubber item be obtained, then through deburring integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667334.XA CN104693612A (en) | 2013-12-10 | 2013-12-10 | Sealing gasket for piston tube of single-knife hydraulic rubber cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667334.XA CN104693612A (en) | 2013-12-10 | 2013-12-10 | Sealing gasket for piston tube of single-knife hydraulic rubber cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104693612A true CN104693612A (en) | 2015-06-10 |
Family
ID=53341188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310667334.XA Pending CN104693612A (en) | 2013-12-10 | 2013-12-10 | Sealing gasket for piston tube of single-knife hydraulic rubber cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104693612A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106366462A (en) * | 2016-08-30 | 2017-02-01 | 无锡神意环件法兰有限公司 | Flat welding flange |
| CN106479068A (en) * | 2016-12-13 | 2017-03-08 | 罗锐明 | A kind of hydraulic cylinder of automobile |
| CN109593277A (en) * | 2018-10-31 | 2019-04-09 | 长沙市佳密封件有限公司 | A kind of preparation method of the antiacid alkali sealing ring of oil resistant |
-
2013
- 2013-12-10 CN CN201310667334.XA patent/CN104693612A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106366462A (en) * | 2016-08-30 | 2017-02-01 | 无锡神意环件法兰有限公司 | Flat welding flange |
| CN106479068A (en) * | 2016-12-13 | 2017-03-08 | 罗锐明 | A kind of hydraulic cylinder of automobile |
| CN106479068B (en) * | 2016-12-13 | 2019-05-21 | 江苏飞达液压成套设备有限公司 | A kind of hydraulic cylinder of automobile |
| CN109593277A (en) * | 2018-10-31 | 2019-04-09 | 长沙市佳密封件有限公司 | A kind of preparation method of the antiacid alkali sealing ring of oil resistant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |