CN103057238A - Production method for sealing gasket - Google Patents
Production method for sealing gasket Download PDFInfo
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- CN103057238A CN103057238A CN2011103399147A CN201110339914A CN103057238A CN 103057238 A CN103057238 A CN 103057238A CN 2011103399147 A CN2011103399147 A CN 2011103399147A CN 201110339914 A CN201110339914 A CN 201110339914A CN 103057238 A CN103057238 A CN 103057238A
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Abstract
The invention discloses a production method for a sealing gasket, which is characterized by comprising the following steps of: 1, according to a prescription, stirring graphite powder, rubber, reinforced fibres and an antiager in a stirrer, uniformly mixing, and then discharging; 2, adding an accelerant in the mixture after discharging, uniformly mixing, then placing the mixture in a mould, and tabletting at normal temperature; 3, adding a metal layer between two tablets to form a composite tablet, and performing rolling vulcanization on the composite tablet in a vulcanization machine having a vulcanization temperature which is controlled to be 165-200 DEG C, so as to obtain a semi-finished product; and 4, stamping the semi-finished product after vulcanization into the needed sealing gasket, namely, the finished product. Compared with the prior art, the production method disclosed by the invention has the advantages that the production process is simple, and the operation is safe and convenient; natural rubber is high in elasticity, so that the produced sealing gasket is good in elasticity and plasticity, and resistant to corrosion and wear; and the sealing gasket is not easy to age via the rolling vulcanization.
Description
Technical field
The present invention relates to the manufacture technology field of seal, particularly relate to a kind of preparation method of gasket seal.
Background technology
In the prior art, application number is that the Chinese invention patent that the CN200910094494.3 name is called " a kind of preparation method of copy sheet used for sealing gasket " relates to a kind of method of making gasket seal, the preparation method who particularly belongs to the copy sheet used for sealing gasket that does not contain asbestos fibre, the encapsulant field.The Main Components of this invention copy sheet is mineral wool fibres, cellulose fibre, aromatic polyamide fibre, rubber cement and kaolin, be blended into aqueous dispersion system, adopt the technique of the papermaking stratification of dewatering gradually, then through overcompression, drying with vulcanize, manufacture the copy sheet finished product.With the gasket seal that this sheet material makes, its tensile strength, compression recovery performance, medium-resistance and sealing property etc. with copy that to get asbestos seal gasket suitable, can substitute asbestos board fully and make the encapsulants such as pad.But, the sealing pad also needs through overcompression and drying by the stratification of dewatering gradually, and manufacture craft is loaded down with trivial details, inconvenient operation, and in the prescription of sealing pad take mineral wool fibres as primary raw material, the wearability of fiber and corrosion resistance are not high, pliability is not strong, therefore the gasket seal of producing is not wear-resistant, service life is not long, so this invention needs further improvement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of technique simple for above-mentioned prior art present situation, the preparation method of the gasket seal of handling safety and long service life.
It is a kind of preparation method of gasket seal that the present invention solves the problems of the technologies described above the technical scheme that adopts, and it is characterized in that: may further comprise the steps:
One, according to prescription, powdered graphite, rubber, fortifying fibre and antiaging agent are put into mixer stir, mutually mix rear discharging;
Two, add promoter in the mixture after discharging, to be mixed evenly after, mixture is placed at normal temperatures compressing tablet of mould;
Three, in the middle of two compressing tablets, add the layer of metal layers, form compound compressing tablet, compound compressing tablet is put into the vulcanizer that curing temperature is controlled at 165-200 ℃ roll sulphur, be semi-finished product;
Four, the semi-finished product after will vulcanizing strike out required gasket seal, are finished product.
As improvement, basic composition is of above-mentioned prescription: powdered graphite 58-62 part, rubber 8-12 part, fortifying fibre 8-12 part, vulcanizing agent 0.8-1.2 part, promoter 0.8-1.2 part, antiaging agent 0.8-1.2 part, above-mentioned is weight portion.
Improve, the mixture in the above-mentioned steps one also need be added with the discharging that stirs again behind the solvent of 12.8-13.2 part again, and above-mentioned is weight portion.
Improve, the activator that the mixture in the above-mentioned steps two also need be added with 3.8-4.2 part mixes again, and above-mentioned is weight portion.
Improve, the periphery of the gasket seal in the above-mentioned steps four scribbles one deck silica gel again.
Improve, the gasket seal in the above-mentioned steps four carries out bound edge again.
Improve, the rubber in the above-mentioned steps one is natural rubber again.
Improve, the fortifying fibre in the above-mentioned steps one is aramid fiber again.
Improve, the promoter in the above-mentioned steps two is 2-thiol benzothiazole or two sulfo-hexichol thiazoles again.
Improve, the antiaging agent in the above-mentioned prescription is the N-phenyl-2-naphthylamine again.
Compared with prior art, the invention has the advantages that manufacture craft is simple, easy-to-operate, it is primary raw material that this gasket seal has adopted natural rubber, because natural rubber has higher elasticity at normal temperatures, slightly be with plasticity, has extraordinary mechanical strength, therefore the gasket seal of producing has preferably elasticity and plasticity, and the aramid fiber in the prescription of the present invention has good resilience, water-resisting property and plasticity, and high temperature resistant, corrosion-resistant, wear-resistant, thereby the gasket seal of institute's output is corrosion-resistant, wear-resistant, pliability is good, so long service life.In this preparation method, gasket seal has shortened cure time by rolling sulphur, and it is aging that it is difficult for.So the preparation method of sealing pad is a kind of very practical preparation method.
Description of drawings
Fig. 1 is the schematic flow sheet of the preparation method of the embodiment of the invention;
Fig. 2 is the structural representation of the embodiment of the invention.
The specific embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the prescription of the embodiment of the invention 1 includes:
Prescription A: 58 parts of powdered graphites, 8 parts of natural rubbers, 8 parts of aramid fibers, 0.8 part in sulphur, 0.8 part of promoter, 0.8 part of antiaging agent, above-mentioned is weight portion.
Prescription B: 60 parts of powdered graphites, 10 parts of natural rubbers, 10 parts of aramid fibers, 1 part in sulphur, 1 part of promoter, 1 part of antiaging agent, above-mentioned is weight portion.
Prescription C: 62 parts of powdered graphites, 12 parts of natural rubbers, 12 parts of aramid fibers, 1.2 parts in sulphur, 1.2 parts of promoter, 1.2 parts of antiaging agents, above-mentioned is weight portion.
Promoter in the above-mentioned prescription is 2-thiol benzothiazole or two sulfo-hexichol thiazoles, and antiaging agent is the N-phenyl-2-naphthylamine, and solvent is gasoline and alcohol, and the size of the powdered graphite particle in the prescription is the 75-200 order.
The preparation method of the embodiment of the invention 1 may further comprise the steps:
One, according to prescription, powdered graphite, natural rubber, aramid fiber and antiaging agent are put into mixer stir, mutually mix rear discharging;
Two, add promoter in the mixture after discharging, to be mixed evenly after, mixture is placed at normal temperatures compressing tablet of mould;
Three, in the middle of two compressing tablets, add the layer of metal layers, form compound compressing tablet, compound compressing tablet is put into the vulcanizer that curing temperature is controlled at 165-200 ℃ roll sulphur, be semi-finished product;
Four, the semi-finished product after will vulcanizing strike out required gasket seal, are finished product.
Five, the periphery of the gasket seal after punching press is coated with last layer silica gel 1.
Six, gasket seal is carried out bound edge.
Seven, gasket seal is put in storage through after checking.
The prescription of the embodiment of the invention 2 includes:
Prescription A: 58 parts of powdered graphites, 12 parts of natural rubbers, 11 parts of aramid fibers, 0.8 part in sulphur, 0.8 part of promoter, 0.8 part of antiaging agent, 3.8 parts in activator, 12.8 parts of solvents, above-mentioned is weight portion.
Prescription B: 60 parts of powdered graphites, 10 parts of natural rubbers, 10 parts of aramid fibers, 1 part in sulphur, 1 part of promoter, 1 part of antiaging agent, 4 parts in activator, 13 parts of solvents, above-mentioned is weight portion.
Prescription C: 62 parts of powdered graphites, 9 parts of natural rubbers, 9 parts of aramid fibers, 1 part in sulphur, 1 part of promoter, 1.2 parts of antiaging agents, 3.8 parts in activator, 13 parts of solvents, above-mentioned is weight portion.
Promoter in the above-mentioned prescription is 2-thiol benzothiazole or two sulfo-hexichol thiazoles, and antiaging agent is the N-phenyl-2-naphthylamine, and solvent is gasoline and alcohol, and the size of the powdered graphite particle in the prescription is the 75-200 order.
The preparation method of the embodiment of the invention 2 may further comprise the steps:
One, according to prescription, powdered graphite, natural rubber, aramid fiber and antiaging agent are put into mixer stir, mutually mix rear discharging;
Two, add solvent first in the mixture after discharging after, add again promoter and activator, to be mixed evenly after, mixture is placed at normal temperatures compressing tablet of mould;
Three, in the middle of two compressing tablets, add the layer of metal layers, form compound compressing tablet, compound compressing tablet is put into the vulcanizer that curing temperature is controlled at 165-200 ℃ roll sulphur, be semi-finished product;
Four, the semi-finished product after will vulcanizing strike out required gasket seal, are finished product.
Five, the periphery of the gasket seal after punching press is coated with last layer silica gel 1.
Six, gasket seal is carried out bound edge.
Seven, gasket seal is put in storage through after checking.
Below be to further specify of the present invention:
(1) technical characterstic:
A, adopted brand-new electrochemistry to invade the stain method;
B, improved traditional graphite expansion technique;
C, molding mode adopt the mold pressing winding method;
D, self design production equipment.
(2) key technology:
Reinforced type flexible graphite material seal pad is a kind of pollution-free, high-tech product that can replace asbestos seal gasket, it is that pulverous natural scale graphite is processed into graphite sheet, then be processed into gasket seal and extensively carry out modern industries such as being applied to automobile, boats and ships, oil, chemical industry, have the advantageous feature such as high temperature resistant, low temperature, corrosion-resistant, self-lubricating, radiation proof, because the seal has good compressibility, resilience and creep resisting ability, will move towards market with the free of contamination environment-protective sealing material of a new generation again.
(3) critical process:
This project reinforced graphite gasket seal is to make first the reinforced graphite sealed bolster plate, namely adopts 60 parts in graphite, 10 parts of rubber, 10 parts of fortifying fibres, 1 part of vulcanizing agent, 1 part of promoter, 1 part of antiaging agent, 4 parts in activator, the weight proportion that solvent is 13 parts is made backing plate, and its preparation method is that first stirring is vulcanized at last again by becoming a machine to grow up in mixer, the gasket seal of making by this sheet material is that a kind of intensity is high, the sealed product of properties excellence.This project adopts graphite and other composites compound, has so both kept the performance of graphite, has remedied again deficiency, make the best of both worlds, enlarged the scope of application, strengthened properties of product, my company adopts soft graphite and following three kinds of composites compound, to reach different products.The one, soft graphite and metal compound namely wrapped layer of metal at flexible graphite sealing spare edge, just can increase intensity and the wearability of seal, avoids the seal distortion; The 2nd, soft graphite and adhesive are compound, reach graphite in the seal requirement of strength than Gao Shike and carry lubricated good result; The 3rd, graphite and metallic are affine, be about to the mode of soft graphite by adding, mixing, make it to form metallic flexible graphite granules, then make gasket seal, resistance to sudden heating and the rust-preventing characteristic of flexible graphite material can be improved, and soft graphite can be eliminated to the corrosion of metal effect.
Claims (10)
1. the preparation method of a gasket seal is characterized in that: may further comprise the steps:
One, according to prescription, powdered graphite, rubber, fortifying fibre and antiaging agent are put into mixer stir, mutually mix rear discharging;
Two, add promoter in the mixture after discharging, to be mixed evenly after, mixture is placed at normal temperatures compressing tablet of mould;
Three, in the middle of two compressing tablets, add the layer of metal layers, form compound compressing tablet, compound compressing tablet is put into the vulcanizer that curing temperature is controlled at 165-200 ℃ roll sulphur, be semi-finished product;
Four, the semi-finished product after will vulcanizing strike out required gasket seal, are finished product.
2. the preparation method of gasket seal according to claim 1, it is characterized in that: basic composition is of described prescription: powdered graphite 58-62 part, rubber 8-12 part, fortifying fibre 8-12 part, vulcanizing agent 0.8-1.2 part, promoter 0.8-1.2 part, antiaging agent 0.8-1.2 part, above-mentioned is weight portion.
3. the preparation method of gasket seal according to claim 2 is characterized in that: the mixture in the described step 1 also need be added with the discharging that stirs again behind the solvent of 12.8-13.2 part, and above-mentioned is weight portion.
4. the preparation method of gasket seal according to claim 2, it is characterized in that: the activator that the mixture in the described step 2 also need be added with 3.8-4.2 part mixes, and above-mentioned is weight portion.
5. the preparation method of the described gasket seal of each claim in 4 according to claim 1, it is characterized in that: the periphery of the gasket seal in the described step 4 scribbles one deck silica gel (1).
6. the preparation method of the described gasket seal of each claim in 4 according to claim 1, it is characterized in that: the gasket seal in the described step 4 carries out bound edge.
7. the preparation method of the described gasket seal of each claim in 4 according to claim 1, it is characterized in that: the rubber in the described step 1 is natural rubber.
8. the preparation method of the described gasket seal of each claim in 4 according to claim 1, it is characterized in that: the fortifying fibre in the described step 1 is aramid fiber.
9. the preparation method of the described gasket seal of each claim in 4 according to claim 1, it is characterized in that: the promoter in the described step 2 is 2-thiol benzothiazole or two sulfo-hexichol thiazoles.
10. the preparation method of the described gasket seal of each claim in 4 according to claim 1, it is characterized in that: the antiaging agent in the described prescription is the N-phenyl-2-naphthylamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110339914.7A CN103057238B (en) | 2011-10-20 | 2011-10-20 | Production method for sealing gasket |
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| CN201110339914.7A CN103057238B (en) | 2011-10-20 | 2011-10-20 | Production method for sealing gasket |
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| CN103057238A true CN103057238A (en) | 2013-04-24 |
| CN103057238B CN103057238B (en) | 2015-07-01 |
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| CN201110339914.7A Expired - Fee Related CN103057238B (en) | 2011-10-20 | 2011-10-20 | Production method for sealing gasket |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103355799A (en) * | 2013-07-31 | 2013-10-23 | 刘春生 | Health-care waistband and bra cup filler and preparation method thereof |
| CN103770439A (en) * | 2013-12-27 | 2014-05-07 | 南京金三力橡塑有限公司 | Production method of ultrathin fluorinated silicone rubber cloth-sandwiched membrane |
| CN104197008A (en) * | 2014-09-28 | 2014-12-10 | 无锡市新颖密封材料厂 | Production technology for graphite gasket |
| CN104259464A (en) * | 2014-09-28 | 2015-01-07 | 无锡市新颖密封材料厂 | Production technology for sealing gasket |
| CN104290340A (en) * | 2014-09-28 | 2015-01-21 | 无锡市新颖密封材料厂 | Manufacturing process of metallic gasket |
| CN104325666A (en) * | 2014-09-28 | 2015-02-04 | 无锡市新颖密封材料厂 | Composite gasket manufacturing technology |
| CN106084730A (en) * | 2016-06-28 | 2016-11-09 | 东台市华阳玻纤有限责任公司 | A kind of carbon fiber wrapping-sealing gasket and preparation method thereof |
| CN106366563A (en) * | 2016-09-30 | 2017-02-01 | 合肥华运机械制造有限公司 | Preparation method of graphite gasket for chemical pump |
| CN106555805A (en) * | 2015-09-30 | 2017-04-05 | 无锡新维特精密机械有限公司 | The processing technique of differential gear pad |
| CN106700154A (en) * | 2017-01-18 | 2017-05-24 | 长春蓝天密封技术开发有限公司 | Graphite sealing material and preparation method thereof |
| CN106750593A (en) * | 2016-12-14 | 2017-05-31 | 安徽德耐孚汽车减震科技技术有限公司 | A kind of anti-corrosive rubber pad and its production technology |
| CN112679808A (en) * | 2020-12-24 | 2021-04-20 | 中裕铁信交通科技股份有限公司 | Low-creep high-damping rubber material and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103355799A (en) * | 2013-07-31 | 2013-10-23 | 刘春生 | Health-care waistband and bra cup filler and preparation method thereof |
| CN103770439A (en) * | 2013-12-27 | 2014-05-07 | 南京金三力橡塑有限公司 | Production method of ultrathin fluorinated silicone rubber cloth-sandwiched membrane |
| CN103770439B (en) * | 2013-12-27 | 2015-11-18 | 南京金三力橡塑有限公司 | A kind of production method of ultra-thin fluorosioloxane rubber folder cloth diaphragm |
| CN104259464A (en) * | 2014-09-28 | 2015-01-07 | 无锡市新颖密封材料厂 | Production technology for sealing gasket |
| CN104290340A (en) * | 2014-09-28 | 2015-01-21 | 无锡市新颖密封材料厂 | Manufacturing process of metallic gasket |
| CN104325666A (en) * | 2014-09-28 | 2015-02-04 | 无锡市新颖密封材料厂 | Composite gasket manufacturing technology |
| CN104197008A (en) * | 2014-09-28 | 2014-12-10 | 无锡市新颖密封材料厂 | Production technology for graphite gasket |
| CN106555805A (en) * | 2015-09-30 | 2017-04-05 | 无锡新维特精密机械有限公司 | The processing technique of differential gear pad |
| CN106084730A (en) * | 2016-06-28 | 2016-11-09 | 东台市华阳玻纤有限责任公司 | A kind of carbon fiber wrapping-sealing gasket and preparation method thereof |
| CN106366563A (en) * | 2016-09-30 | 2017-02-01 | 合肥华运机械制造有限公司 | Preparation method of graphite gasket for chemical pump |
| CN106750593A (en) * | 2016-12-14 | 2017-05-31 | 安徽德耐孚汽车减震科技技术有限公司 | A kind of anti-corrosive rubber pad and its production technology |
| CN106700154A (en) * | 2017-01-18 | 2017-05-24 | 长春蓝天密封技术开发有限公司 | Graphite sealing material and preparation method thereof |
| CN106700154B (en) * | 2017-01-18 | 2018-11-06 | 长春蓝天密封技术开发有限公司 | A kind of graphite sealing material and preparation method thereof |
| CN112679808A (en) * | 2020-12-24 | 2021-04-20 | 中裕铁信交通科技股份有限公司 | Low-creep high-damping rubber material and preparation method and application thereof |
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Granted publication date: 20150701 Termination date: 20211020 |