CN103481513A - Method for processing PTFE-coated rubber sealing gasket - Google Patents
Method for processing PTFE-coated rubber sealing gasket Download PDFInfo
- Publication number
- CN103481513A CN103481513A CN201310434515.8A CN201310434515A CN103481513A CN 103481513 A CN103481513 A CN 103481513A CN 201310434515 A CN201310434515 A CN 201310434515A CN 103481513 A CN103481513 A CN 103481513A
- Authority
- CN
- China
- Prior art keywords
- sealing gasket
- acrylonitrile
- butadiene rubber
- polytetrafluoroethylene film
- rubber sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 43
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 42
- 229920001971 elastomer Polymers 0.000 title abstract description 10
- 239000005060 rubber Substances 0.000 title abstract description 10
- 238000000034 method Methods 0.000 title abstract description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 30
- 239000012948 isocyanate Substances 0.000 claims abstract description 14
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 8
- 230000004913 activation Effects 0.000 claims abstract description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 32
- 238000003672 processing method Methods 0.000 claims description 17
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 15
- 238000001994 activation Methods 0.000 claims description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 4
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012797 qualification Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 abstract 4
- 239000000853 adhesive Substances 0.000 abstract 3
- 230000001070 adhesive effect Effects 0.000 abstract 3
- 230000008901 benefit Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000678 plasma activation Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Sealing Material Composition (AREA)
Abstract
The invention belongs to the field of machine manufacturing, and particularly relates to a method for processing a PTFE-coated rubber sealing gasket. The PTFE-coated rubber sealing gasket is formed by processing a PTFE film, a butadiene-acrylonitrile rubber sealing gasket and an isocyanate adhesive; the method comprises the steps as follows: performing activation treatment on the PTFE film; coating the isocyanate adhesive to the surface of the PTFE film in a working chamber with the temperature of 20-28 DEG C and the relative air humidity less than 65 percent; tightly pressing and sticking the PTFE film coated with the isocyanate adhesive to the surface of the butadiene-acrylonitrile rubber sealing gasket, and removing the air between the sticking layers; placing the butadiene-acrylonitrile rubber sealing gasket stuck with the PTFE film into a drying oven with the temperature of 90 DEG C and drying the butadiene-acrylonitrile rubber sealing gasket for 10 min. According to the invention, the production efficiency is high, the product qualification rate is also high, and the application prospect is broad.
Description
Technical field
The invention belongs to mechanical manufacturing field, be specifically related to a kind of processing method of wrapping the fluorubber sealing gasket.
Background technology
Bag fluorubber sealing gasket is that the working surface that the polytetrafluoro film is bonded in when rubber gasket vulcanizes to rubber gasket forms.It also has that coefficient of friction is little, wearability reaches well the good advantages such as self lubricity except the primary characteristic that keeps rubber gasket, is applicable to movable sealing.At present, bag fluorubber sealing gasket all has demand on all kinds of types, has a good application prospect, and its applicable condition of work (medium, temperature, pressure) is decided by be wrapped by the performance of sizing material.But because the production difficulty of bag fluorubber sealing gasket is larger, the production process complexity, qualification rate is lower.
Summary of the invention
For the deficiency existed on prior art, the invention provides that a kind of production efficiency is high, the also processing method of high bag fluorubber sealing gasket of product percent of pass.
To achieve these goals, the present invention realizes by the following technical solutions:
A kind of processing method of wrapping the fluorubber sealing gasket, its described bag fluorubber sealing gasket is processed by polytetrafluoroethylene film, acrylonitrile-butadiene rubber sealing gasket and isocyanate glue, and described processing method comprises the steps:
1) activation process of polytetrafluoroethylene film;
Ethanol, ether mixed liquor for polytetrafluoroethylene film are carried out to the degrease processing, and clean up by deionized water;
Polytetrafluoroethylene film after degrease is processed is put into the acetone cleaning fluid and is carried out cleaned by ultrasonic vibration and activation;
Polytetrafluoroethylene film after activation is carried out to vacuum drying;
2) be that 20-28 ℃, relative air humidity are less than in 65% operating room in temperature, PolytetrafluoroethylFilm Film is cleaned one time with the 120# industrial naptha, dry in air, and be coated with within an hour the uniform isocyanate glue of last layer;
The polytetrafluoroethylene film that 3) will be coated with isocyanate glue compresses and to stick on acrylonitrile-butadiene rubber sealing gasket surface, removes the air between adhesive layer;
The acrylonitrile-butadiene rubber sealing gasket that 4) will glue polytetrafluoroethylene film is placed on the baking oven inner drying 10 minutes, 90 ℃ of oven temperatures.
The processing method of above-mentioned bag fluorubber sealing gasket, in its described ethanol, ether mixed liquor, the ratio of ethanol, ether is 3:1.
The processing method of above-mentioned bag fluorubber sealing gasket, its described acrylonitrile-butadiene rubber sealing gasket comprises the acrylonitrile-butadiene rubber "O"-ring, the step 3) of described processing method is carried out in pressure setting, polytetrafluoroethylene film is placed on cavity impression, the acrylonitrile-butadiene rubber "O"-ring is coated on formpiston fuse die cavity, makes outer cladding formula bag fluorubber sealing gasket.
The processing method of above-mentioned bag fluorubber sealing gasket, its described acrylonitrile-butadiene rubber sealing gasket comprises the acrylonitrile-butadiene rubber "O"-ring, the step 3) of described processing method is carried out in pressure setting, the acrylonitrile-butadiene rubber "O"-ring is placed on to cavity impression, polytetrafluoroethylene film is placed on formpiston fuse die cavity, makes interior clad type bag fluorubber sealing gasket.
Beneficial effect:
The polytetrafluoroethylene film that adopts above-mentioned activation process to cross, sticking on acrylonitrile-butadiene rubber sealing gasket Surface Machining by isocyanate glue forms, the overall appearance of part is smooth smooth, without the bad cutter trades such as bubble, eyelet, impurity, concavo-convex, scuffing, the generation of corrugationless situation.Not only qualification rate is high, and cost.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the present invention.
Bag fluorubber sealing gasket of the present invention is processed by polytetrafluoroethylene film, acrylonitrile-butadiene rubber sealing gasket and isocyanate glue, and concrete steps are as follows:
1) activation process of polytetrafluoroethylene film;
Ethanol, ether mixed liquor for polytetrafluoroethylene film are carried out to the degrease processing, and the ratio of ethanol, ether is 3:1, and cleans up by deionized water;
Polytetrafluoroethylene film after degrease is processed is put into the acetone cleaning fluid and is carried out cleaned by ultrasonic vibration and activation;
Polytetrafluoroethylene film after activation is carried out to vacuum drying;
2) be that 20-28 ℃, relative air humidity are less than in 65% operating room in temperature, PolytetrafluoroethylFilm Film is cleaned one time with the 120# industrial naptha, dry in air, and be coated with within an hour the uniform isocyanate glue of last layer;
The polytetrafluoroethylene film that 3) will be coated with isocyanate glue compresses and to stick on acrylonitrile-butadiene rubber sealing gasket surface, removes the air between adhesive layer;
The acrylonitrile-butadiene rubber sealing gasket that 4) will glue polytetrafluoroethylene film is placed on the baking oven inner drying 10 minutes, and oven temperature is set to 90 ℃, has obtained bag fluorubber sealing gasket after drying.
The present invention also is applicable to coat polytetrafluoroethylene film on acrylonitrile-butadiene rubber "O"-ring surface, when needs processing outer cladding formula bag fluorubber sealing gasket, complete successively above-mentioned 1)～2) step, step 3) is carried out in pressure setting, polytetrafluoro is placed on cavity impression, the acrylonitrile-butadiene rubber "O"-ring is coated on formpiston fuse die cavity, through 4) sulfuration of the drying of step, make outer cladding formula bag fluorubber sealing gasket.
In needs processing during clad type bag fluorubber sealing gasket, complete successively above-mentioned 1)～2) step, step 3) is carried out in pressure setting, the acrylonitrile-butadiene rubber "O"-ring is placed on to cavity impression, polytetrafluoroethylene film is placed on formpiston fuse die cavity, through 4) sulfuration of the drying of step, make interior clad type bag fluorubber sealing gasket.
Because polytetrafluoroethylene (PTFE) has good self-lubricating property, film surface is very smooth, if directly apply isocyanate glue, can form globule type on its surface, can not be uniformly dispersed in ptfe surface, make isocyanate glue sizing material and polytetrafluoroethylene (PTFE) mold pressing form bonding force, therefore need to carry out the plasma activation processing to PolytetrafluoroethylFilm Film, determine optimum surface treatment method.
Polytetrafluoroethylene film and acrylonitrile-butadiene rubber sealing gasket do not allow not bonding part at whole coating face, and the polytetrafluoroethylene film working surface should be smooth smooth, the bubble that do not have, eyelet, impurity, concavo-convex, scratch,
The vestige that burr and mould processing are bad; The vestige of the Treatment with activating agent that do not have.
Above demonstration and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, 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. a processing method of wrapping the fluorubber sealing gasket, is characterized in that, described bag fluorubber sealing gasket is processed by polytetrafluoroethylene film, acrylonitrile-butadiene rubber sealing gasket and isocyanate glue, and described processing method comprises the steps:
1) activation process of polytetrafluoroethylene film;
Ethanol, ether mixed liquor for polytetrafluoroethylene film are carried out to the degrease processing, and clean up by deionized water;
Polytetrafluoroethylene film after degrease is processed is put into the acetone cleaning fluid and is carried out cleaned by ultrasonic vibration and activation;
Polytetrafluoroethylene film after activation is carried out to vacuum drying;
2) be that 20-28 ℃, relative air humidity are less than in 65% operating room in temperature, PolytetrafluoroethylFilm Film is cleaned one time with the 120# industrial naptha, dry in air, and be coated with within an hour the uniform isocyanate glue of last layer;
The polytetrafluoroethylene film that 3) will be coated with glue compresses and to stick on acrylonitrile-butadiene rubber sealing gasket surface, removes the air between adhesive layer;
The acrylonitrile-butadiene rubber sealing gasket that 4) will glue polytetrafluoroethylene film is placed on the baking oven inner drying 10 minutes, oven temperature 90-95 ℃.
2. the processing method of bag fluorubber sealing gasket according to claim 1, is characterized in that, in described ethanol, ether mixed liquor, the ratio of ethanol, ether is 3:1.
3. the processing method of bag fluorubber sealing gasket according to claim 1, it is characterized in that, described acrylonitrile-butadiene rubber sealing gasket comprises the acrylonitrile-butadiene rubber "O"-ring, the step 3) of described processing method is carried out in pressure setting, polytetrafluoroethylene film is placed on cavity impression, the acrylonitrile-butadiene rubber "O"-ring is coated on formpiston fuse die cavity, makes outer cladding formula bag fluorubber sealing gasket.
4. the processing method of bag fluorubber sealing gasket according to claim 1, it is characterized in that, described acrylonitrile-butadiene rubber sealing gasket comprises the acrylonitrile-butadiene rubber "O"-ring, the step 3) of described processing method is carried out in pressure setting, the acrylonitrile-butadiene rubber "O"-ring is placed on to cavity impression, polytetrafluoroethylene film is placed on formpiston fuse die cavity, makes interior clad type bag fluorubber sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310434515.8A CN103481513A (en) | 2013-09-23 | 2013-09-23 | Method for processing PTFE-coated rubber sealing gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310434515.8A CN103481513A (en) | 2013-09-23 | 2013-09-23 | Method for processing PTFE-coated rubber sealing gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103481513A true CN103481513A (en) | 2014-01-01 |
Family
ID=49822269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310434515.8A Pending CN103481513A (en) | 2013-09-23 | 2013-09-23 | Method for processing PTFE-coated rubber sealing gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103481513A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078964A (en) * | 2019-05-13 | 2019-08-02 | 盘锦国强石油装备制造有限公司 | A kind of preparation method of Wear-resistant, high-temperature resistant material and its application in petroleum drilling and mining sealing material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107881A (en) * | 1994-03-03 | 1995-09-06 | 中国科学院长春应用化学研究所 | Fluoride thread sealant |
| CN1277575A (en) * | 1997-10-27 | 2000-12-20 | 大金工业株式会社 | Perfluororubber laminate and process for prodcing the same |
| US20090169824A1 (en) * | 2007-11-21 | 2009-07-02 | Lizete Lombardi Awazu | Rubber Profile for Flood Gate Sealing, Manufacturing System and Product thereof obtained |
| CN102297309A (en) * | 2011-08-05 | 2011-12-28 | 上海永鑫波纹管有限公司 | Telescopic device of ultra-large caliber water-conducting pressure steel pipe of water power station and method for manufacturing corrugated pipe thereof |
| CN102501383A (en) * | 2011-12-08 | 2012-06-20 | 贵州红阳机械(集团)公司 | Machining method of fluoroplastic covered rubber sealing ring |
| CN102675675A (en) * | 2012-05-18 | 2012-09-19 | 江南大学 | Dithiocarbamic acid (DTC) modified chitosan macromolecule composite membrane and preparation method |
| CN103060782A (en) * | 2012-12-26 | 2013-04-24 | 中国科学院长春光学精密机械与物理研究所 | A preparation method of transparent conductive TiO2/Ag/TiO2 composite film |
| CN103265181A (en) * | 2013-05-10 | 2013-08-28 | 北京控制工程研究所 | Method for preparing low-reflectivity metallic thin film |
-
2013
- 2013-09-23 CN CN201310434515.8A patent/CN103481513A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107881A (en) * | 1994-03-03 | 1995-09-06 | 中国科学院长春应用化学研究所 | Fluoride thread sealant |
| CN1277575A (en) * | 1997-10-27 | 2000-12-20 | 大金工业株式会社 | Perfluororubber laminate and process for prodcing the same |
| US20090169824A1 (en) * | 2007-11-21 | 2009-07-02 | Lizete Lombardi Awazu | Rubber Profile for Flood Gate Sealing, Manufacturing System and Product thereof obtained |
| CN102297309A (en) * | 2011-08-05 | 2011-12-28 | 上海永鑫波纹管有限公司 | Telescopic device of ultra-large caliber water-conducting pressure steel pipe of water power station and method for manufacturing corrugated pipe thereof |
| CN102501383A (en) * | 2011-12-08 | 2012-06-20 | 贵州红阳机械(集团)公司 | Machining method of fluoroplastic covered rubber sealing ring |
| CN102675675A (en) * | 2012-05-18 | 2012-09-19 | 江南大学 | Dithiocarbamic acid (DTC) modified chitosan macromolecule composite membrane and preparation method |
| CN103060782A (en) * | 2012-12-26 | 2013-04-24 | 中国科学院长春光学精密机械与物理研究所 | A preparation method of transparent conductive TiO2/Ag/TiO2 composite film |
| CN103265181A (en) * | 2013-05-10 | 2013-08-28 | 北京控制工程研究所 | Method for preparing low-reflectivity metallic thin film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078964A (en) * | 2019-05-13 | 2019-08-02 | 盘锦国强石油装备制造有限公司 | A kind of preparation method of Wear-resistant, high-temperature resistant material and its application in petroleum drilling and mining sealing material |
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Application publication date: 20140101 |