CN103600496A - Preparation method of rubber sealing ring - Google Patents
Preparation method of rubber sealing ring Download PDFInfo
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- CN103600496A CN103600496A CN201310454517.3A CN201310454517A CN103600496A CN 103600496 A CN103600496 A CN 103600496A CN 201310454517 A CN201310454517 A CN 201310454517A CN 103600496 A CN103600496 A CN 103600496A
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- rubber
- rubber tube
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- fluorinated ethylene
- rubber hose
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Abstract
The invention discloses a preparation method of a rubber sealing ring, and relates to the field of rubber processing. The method comprises steps of synthesizing a rubber hose, compounding an external layer membrane, compounding an internal layer membrane, cutting and trimming, and the like. The step of compounding the external layer membrane includes polishing the external surface of the rubber hose by a sand mill and scrubbing respectively with water, ethanol and acetone; polishing a treatment surface of a polytetrafluoroethylene membrane by a sand mill and scrubbing respectively with water, ethanol and acetone, drying in air, and coating a layer of a polyurethane adhesive; and pasting the polytetrafluoroethylene membrane on the external surface of the rubber hose and laminating at 100 DEG C under 1.5-2 KPa. The step of compounding the internal layer membrane includes heating a fluorinated ethylene-propylene resin in a banburying furnace to 340 DEG C to make the fluorinated ethylene-propylene resin in a molten state, adding 1-5 wt% of the polyurethane adhesive, mixing uniformly, injecting rapidly at a speed of 100-150 m/min and passing through the rubber hose, and leaving a fluorinated ethylene-propylene resin membrane on the internal surface of the rubber hose. The processes can be repeated. The thickness of the fluorinated ethylene-propylene resin membrane in the rubber hose is 0.1-0.3 mm. The rubber sealing ring has characteristics of being wear resistant and low-temperature resistant.
Description
Technical field
The present invention relates to rubber processing, particularly relate to a kind of preparation method of rubber seal.
Background technology
The circular cowling that rubber rubber seal is comprised of one or several part, be fixed on lasso of bearing or packing ring and contact or form narrow labyrinth clearance with another lasso or packing ring, prevent that lubricating oil from spilling and foreign object is invaded, neoprene is to have good oil resistant, resistance to solvent, the performances such as chemical mediator, but not resistance to aromatic oil, be characterized in selling day Hou Laohua and ozone aging function admirable, in production, experience in buying the lottery tickets is tested neoprene and is made door and window sealing strip and diaphragm and general vacuum sealing article silicon rubber conventionally: have outstanding high and low temperature resistance, in the temperature range of-70 ℃-+260 ℃, keep good use elasticity, and there is resistance to ozone, the advantages such as Weather-resistant, should make the liner in thermomechanical, because making thermal insulation without any toxicity, insulated product and druggist rubber sundrier, if the patent No. is that 200810132357.X is a kind of production method of sealing ring, it comprises the steps: that (1) takes raw material, (2) mixed material, (3) mixed raw material is put into mould, heat or heat pressurization simultaneously, (4) after the demoulding again after cooling or first cooling step-down again the demoulding process, make the semi-finished product of sealing ring, (5) semi-finished product are become on lathe to the sealing ring of different section with tool sharpening, finishing burr, get product, said method has been broken the production model of sealing ring in prior art, only need according to actual needs, select suitable materials processing to go out the semi-finished product of the sealing ring of same specification, recycling lathe and cutter are processed into semi-finished product the sealing ring completed product with different size and shape, its production technology is simple, speed is fast, delivery cycle is short, low cost product, be easy to apply, but this processing technology is not to carry out modification at sealing ring itself, can not solve the character of the not anti-low temperature heat-resisting quantity of sealing ring, simultaneously because volume is little, produce inconvenient, can not solve caking and affect sealing ring character, wearability does not guarantee.
Summary of the invention
For overcoming the deficiency in prior art, the object of the invention is to provide a kind of preparation method of rubber seal.
For realizing object of the present invention, technical scheme of the present invention is as follows:
A preparation method for rubber seal, described preparation method comprises the steps:
(1) neoprene and silicon rubber are cut into fritter in bale splitter, with the ratio of 3:1, join in banbury, at stirring condition, heating-up temperature is at 350 ℃, and two kinds of rubber melting mixing are even;
(2) activating agent, glass fibre, PEG4000, Cosan and plasticizer DOS are mixed and mixture is ground to form to the particle that granularity is 100-300 μ m in ball mill;
Wherein, in mixture, contain the rubber of 80-85wt%, 3-10wt% activating agent, 1-5wt% glass fibre, 3wt%PEG4000,5wt% Cosan and 5-10wt% plasticizer DOS;
(3) banbury temperature is slowly reduced to after 300 ℃, the particle of gained in step (2) is joined in banbury, mix;
(4) mixed solution in step (3) is crossed to 170 order stainless (steel) wires while hot;
(5) mixed liquor in step (4) is injected in the injector mould of setting size through high-pressure injection moulding machine, obtains rubber tube, 150-170 ℃ in mill, vulcanizes 3-5h under the pressure of 150Kn;
(6) rubber tube outer surface step (5) being obtained is with after sand mill polishing, after water, ethanol and the wiping of acetone difference, getting polytetrafluoroethylene film, after treatment surface is polished with sand mill, after water, ethanol and the wiping of acetone difference, dry, be coated with one deck polyurethane adhesive, polytetrafluoroethylene film is attached on rubber tube outer surface, and 100 ℃, 1.5-2KPa press together;
(7) in banburying stove, heating exhaustive fluorinated ethylene propylene to 340 ℃ makes it become molten condition, add 1-5wt% polyurethane adhesive, after mixing, with the speed of 100-150m/min, inject fast and pass rubber tube, at rubber tube inner surface, leave exhaustive fluorinated ethylene propylene film, can repeat above-mentioned steps, in described rubber tube, the thickness of exhaustive fluorinated ethylene propylene film is 0.1-0.3mm;
(8) rubber tube in step (7) is cut into the rubber ring that thickness is 0.2-0.5cm, with trimmer, take rotating speed as 500-1200rpm, feed velocity is 0.5mm-1mm/s, and rubber tube is carried out to deburring processing, can obtain finished product sealing ring.
The preparation method of above-mentioned a kind of rubber seal, wherein, in step (2), the composition of activating agent is stearic acid and metal oxide compounds.
The preparation method of above-mentioned a kind of rubber seal, wherein, described metal oxide is zinc oxide or magnesia.
The preparation method of above-mentioned a kind of rubber seal, wherein, the ratio of described stearic acid and metal oxide is 1:3.
Beneficial effect of the present invention: structure proportion is reasonable, technique is simple, acrylonitrile-butadiene rubber oil resistivity is good, there is good wearability, resistance to ag(e)ing and air-tightness, silicon rubber has excellent against weather, ozone resistance and good insulating properties, mix two kinds of rubber and can take into account the advantage of two kinds of rubber simultaneously, rubber is cut into small pieces, accelerate the melting of rubber, increase work efficiency, add activator can accelerate vulcanization crosslinking, PEG4000 plays the effect of lubricant, mixture is crossed to the situations such as agllutination that stainless (steel) wire filtering solids occurs in mixed process, improve rubber compacting quality, rubber is made to tubulose, and on its basis it is reprocessed, because tubulose volume is larger, handled easily, reduce error, outside rubber tube, ptfe composite film increases wearability, the exhaustive fluorinated ethylene propylene that contains glue on form by high hot liquid is compound in tube wall, be connected with rubber tube closely on the one hand, thickness is controlled, can increase the low temperature tolerance ability of rubber seal on the other hand.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the present invention.
embodiment 1:
A preparation method for rubber seal, described preparation method comprises the steps:
(1) neoprene and silicon rubber are cut into fritter in bale splitter, with the ratio of 3:1, join in banbury, at stirring condition, heating-up temperature is at 350 ℃, and two kinds of rubber melting mixing are even;
(2) stearic acid and zinc oxide (1:3) compound, glass fibre, PEG4000, Cosan and plasticizer DOS are mixed and mixture ground to form to the particle that granularity is 300 μ m in ball mill;
Wherein, in mixture, contain the rubber of 85wt%, 3wt% activating agent, 2wt% glass fibre, 3wt%PEG4000,5wt% Cosan and 2wt% plasticizer DOS;
(3) banbury temperature is slowly reduced to after 300 ℃, the particle of gained in step (2) is joined in banbury, mix;
(4) mixed solution in step (3) is crossed to 170 order stainless (steel) wires while hot;
(5) mixed liquor in step (4) is injected in injector " O " mould of setting size through high-pressure injection moulding machine, obtains rubber tube, in mill 160 ℃, under the pressure of 150Kn, vulcanize 4h;
(6) rubber tube outer surface step (5) being obtained is with after sand mill polishing, after water, ethanol and the wiping of acetone difference, getting polytetrafluoroethylene film, after treatment surface is polished with sand mill, after water, ethanol and the wiping of acetone difference, dry, be coated with one deck polyurethane adhesive, polytetrafluoroethylene film is attached on rubber tube outer surface, and 100 ℃, 2KPa press together;
(7) in banburying stove, heating exhaustive fluorinated ethylene propylene to 340 ℃ makes it become molten condition, add 2wt% polyurethane adhesive, after mixing, with the speed of 100m/min, inject fast and pass rubber tube, at rubber tube inner surface, leave exhaustive fluorinated ethylene propylene film, can repeat above-mentioned steps, in described rubber tube, the thickness of exhaustive fluorinated ethylene propylene film is 0.1mm;
(8) rubber tube in step (7) is cut into the rubber ring that thickness is 0.2cm, with trimmer, take rotating speed as 800rpm, feed velocity is 0.5mm/s, and rubber tube is carried out to deburring processing, can obtain finished product sealing ring.
embodiment 2:all the other are identical with described embodiment 1, difference is, in step (2), the mixture that removes rubber grinds to form the rubber that contains 80wt% in the granulate mixture that granularity is 100 μ m, 3wt% stearic acid and magnesia (1:3) compound, 5wt% glass fibre, 3wt%PEG4000,5wt% Cosan and 4wt% plasticizer DOS, in step (5), conditions of vulcanization changes 150 ℃ into, 3h; In step (7), in described rubber tube, the thickness of exhaustive fluorinated ethylene propylene film is 0.3mm, and the rubber tube in step (8) cuts into the rubber ring that thickness is 0.5cm, with trimmer, take rotating speed as 1200rpm, and feed velocity is that 1mm/s carries out deburring.
embodiment 3:all the other are identical with described embodiment 1, difference is, in step (2), the mixture that removes rubber grinds to form the rubber that contains 82wt% in the granulate mixture that granularity is 150 μ m, 5wt% stearic acid and magnesia (1:3) compound, 1wt% glass fibre, 3wt%PEG4000,5wt% Cosan and 4wt% plasticizer DOS, in step (5), conditions of vulcanization changes 170 ℃ into, 5h; In step (7), in described rubber tube, the thickness of exhaustive fluorinated ethylene propylene film is 0.2mm, and the rubber tube in step (8) cuts into the rubber ring that thickness is 0.3cm, with trimmer, take rotating speed as 500rpm, and feed velocity is that 0.8mm/s carries out deburring.
In above-mentioned three embodiment, hot strength is 15Mpa, cold-hot impact test: by the present embodiment make sealing ring and be placed in-100 ℃ with 100 ℃ of conditions under each 1 hour, 200 cycles, its firmness change is below 90 degree, high temperature resistant test: place 164h for 125 ℃, outward appearance without distortion, contraction, crackle, be clamminess and separate out phenomenon, after three roads processing, process time is the same with the common process process time.
Preparation method's structure proportion of this rubber seal is reasonable, technique is simple, acrylonitrile-butadiene rubber oil resistivity is good, there is good wearability, resistance to ag(e)ing and air-tightness, silicon rubber has excellent against weather, ozone resistance and good insulating properties, mix two kinds of rubber and can take into account the advantage of two kinds of rubber simultaneously, rubber is cut into small pieces, accelerate the melting of rubber, increase work efficiency, add activator can accelerate vulcanization crosslinking, PEG4000 plays the effect of lubricant, mixture is crossed to the situations such as agllutination that stainless (steel) wire filtering solids occurs in mixed process, improve rubber compacting quality, rubber is made to tubulose, and on its basis it is reprocessed, because tubulose volume is larger, handled easily, reduce error, outside rubber tube, ptfe composite film increases wearability, the exhaustive fluorinated ethylene propylene that contains glue on form by high hot liquid is compound in tube wall, be connected with rubber tube closely on the one hand, thickness is controlled, can increase the low temperature tolerance ability of rubber seal on the other hand.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. a preparation method for rubber seal, is characterized in that, described preparation method comprises the steps:
(1) neoprene and silicon rubber are cut into fritter in bale splitter, with the ratio of 3:1, join in banbury, at stirring condition, heating-up temperature is at 350 ℃, and two kinds of rubber melting mixing are even;
(2) activating agent, glass fibre, PEG4000, Cosan and plasticizer DOS are mixed and mixture is ground to form to the particle that granularity is 100-300 μ m in ball mill;
Wherein, in mixture, contain the rubber of 80-85wt%, 3-10wt% activating agent, 1-5wt% glass fibre, 3wt%PEG4000,5wt% Cosan and 5-10wt% plasticizer DOS;
(3) banbury temperature is slowly reduced to after 300 ℃, the particle of gained in step (2) is joined in banbury, mix;
(4) mixed solution in step (3) is crossed to 170 order stainless (steel) wires while hot;
(5) mixed liquor in step (4) is injected in the injector mould of setting size through high-pressure injection moulding machine, obtains rubber tube, 150-170 ℃ in mill, vulcanizes 3-5h under the pressure of 150Kn;
(6) rubber tube outer surface step (5) being obtained is with after sand mill polishing, after water, ethanol and the wiping of acetone difference, getting polytetrafluoroethylene film, after treatment surface is polished with sand mill, after water, ethanol and the wiping of acetone difference, dry, be coated with one deck polyurethane adhesive, polytetrafluoroethylene film is attached on rubber tube outer surface, and 100 ℃, 1.5-2KPa press together;
(7) in banburying stove, heating exhaustive fluorinated ethylene propylene to 340 ℃ makes it become molten condition, add 1-5wt% polyurethane adhesive, after mixing, with the speed of 100-150m/min, inject fast and pass rubber tube, at rubber tube inner surface, leave exhaustive fluorinated ethylene propylene film, can repeat above-mentioned steps, in described rubber tube, the thickness of exhaustive fluorinated ethylene propylene film is 0.1-0.3mm;
(8) rubber tube in step (7) is cut into the rubber ring that thickness is 0.2-0.5cm, with trimmer, take rotating speed as 500-1200rpm, feed velocity is 0.5mm-1mm/s, and rubber tube is carried out to deburring processing, can obtain finished product sealing ring.
2. the preparation method of a kind of rubber seal according to claim 1, is characterized in that, in step (2), the composition of activating agent is stearic acid and metal oxide compounds.
3. the preparation method of a kind of rubber seal according to claim 2, is characterized in that, described metal oxide is zinc oxide or magnesia.
4. the preparation method of a kind of rubber seal according to claim 2, is characterized in that, the ratio of described stearic acid and metal oxide is 1:3.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454517.3A CN103600496A (en) | 2013-09-29 | 2013-09-29 | Preparation method of rubber sealing ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454517.3A CN103600496A (en) | 2013-09-29 | 2013-09-29 | Preparation method of rubber sealing ring |
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| CN103600496A true CN103600496A (en) | 2014-02-26 |
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| CN201310454517.3A Pending CN103600496A (en) | 2013-09-29 | 2013-09-29 | Preparation method of rubber sealing ring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105820393A (en) * | 2016-04-13 | 2016-08-03 | 吴申龙 | High temperature resistant mechanical sealing ring material and preparation process thereof |
| CN114407221A (en) * | 2022-01-24 | 2022-04-29 | 江西立德汽车零部件有限公司 | Rubber protective coil and preparation method thereof |
-
2013
- 2013-09-29 CN CN201310454517.3A patent/CN103600496A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105820393A (en) * | 2016-04-13 | 2016-08-03 | 吴申龙 | High temperature resistant mechanical sealing ring material and preparation process thereof |
| CN114407221A (en) * | 2022-01-24 | 2022-04-29 | 江西立德汽车零部件有限公司 | Rubber protective coil and preparation method thereof |
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Application publication date: 20140226 |