CN104592603A - Novel rubber seal ring for explosion-proof motor and production technology for rubber seal ring for - Google Patents
Novel rubber seal ring for explosion-proof motor and production technology for rubber seal ring for Download PDFInfo
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- CN104592603A CN104592603A CN201510089724.2A CN201510089724A CN104592603A CN 104592603 A CN104592603 A CN 104592603A CN 201510089724 A CN201510089724 A CN 201510089724A CN 104592603 A CN104592603 A CN 104592603A
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Abstract
The invention discloses a novel rubber seal ring for an explosion-proof motor, and belongs to the technical field of sealing rings. The rubber seal ring is characterized by comprising the following raw materials in parts by weight: 45-55 parts of neoprene, 10-20 parts of EPDM rubber, 4-6 parts of sulfidation system, 5-10 parts of a coldproof soften flux, 12-18 parts of a reinforcing agent, 5-10 parts of a coldproof assistant, and 2-5 parts of an ozone proof assistant. The rubber seal ring has the advantages that the rubber seal ring is high in ozone resistance, good in low temperature resistant performance, and reliable in sealing; the abrasion resistant capability is reinforced greatly; the product quality is more stable; the service life is prolonged by 200% to rubber seal rings for explosion-proof motors in the prior art.
Description
Technical field
The invention belongs to sealing-ring technical field, particularly a kind of fire proof motor rubber sealing ring.
Background technology
The elastomeric material that the fire proof motor rubber seal of China mainly uses is chloroprene rubber (CR), natural rubber (NR).Chloroprene rubber itself has excellent oil-proofness, wear resistance, but due to the resistance to ozone ability of CR and resistance to low temperature not good, especially when rubber at larger stress, significantly harden due to crystallization at low temperatures, become and can't bear to use, thus in fire proof motor work-ing life shorter, and easily cause electric discharge to cause the accident.Terpolymer EP rubber is high saturability rubber, has good resistance toheat, resistance to low temperature, ozone resistance and electrical insulation capability, but himself oil-proofness and binding property poor.If can be undertaken blended by bi-material, the weak performance of neoprene latex can be made to improve, expand the use range of its product and the work-ing life of improving product is that enterprise brings benefit.
The continuous quickening of the part process that domesticizes in recent years, makes also using and the blended main path becoming improvement product performance and reduce production cost of multiple material.Thereupon, for scientific and technological research staff has higher requirement, EPDM is high saturated rubber, and CR is the unsaturated rubber with polar group, and chemical structure differs greatly, and the consistency of the two is poor; Be exactly the polarity difference of both CR and EPDM and the difference of sulfurate activity in addition, result in the asynchronous of the skewness of vulcanizing agent in two-phase and sulfuration, these problems all limit the performance of chloroprene rubber (CR) and terpolymer EP rubber (EPDM) Blend rubber, so it is suitable to develop a kind of ratio, consistency is good, can the chloroprene rubber of synchronic curing and the resistance to ozone of ethylene propylene diene monomer (EPDM) rubber blend and low temperature resistant Blend rubber extremely be necessary.
Vulcanizing agent can make rubber molecular chain play crosslinking reaction, and make linear molecule form tridimensional network, plasticity-reduces, the material that elastic strength increases.Except some thermoplastic elastomer does not need sulfuration, natural rubber and various synthetic rubber all need to allocate vulcanizing agent into and carry out sulfuration.Rubber just has valuable use value after sulfuration, and mechanical property improves greatly.
Vulcanization accelerator is called for short promotor, can promote the material of sulfuration.Can curing time be shortened, reduce curing temperature, reduce the physical and mechanical properties etc. of vulcanizing agent consumption and raising rubber.Inorganic accelerator and the large class of organic promoter two can be divided into.In inorganic accelerator, except promotor, magnesium oxide, plumbous oxide etc. use on a small quantity, all the other are mainly used as secondary accelerator.
Number of patent application a kind of Nitrile rubber/ethylene propylene diene monomer for the low temperature resistant sealing-ring of resistance to ozone that has been the disclosure of the invention of CN201110189885.0.Sizing material component is: paracril, terpolymer EP rubber, expanding material CPE, antioxidant MB, stearic acid, paraffin, plasticizer DOP, carbon black N550, potter's clay, coupling agent KH-550, high-phenylethylene, neutralizing agent TRA, crosslink agent DCP, additional crosslinker TMPTMA and additional crosslinker TAIC.The sizing material composition adopted in this invention is prepared from by 15 kinds of materials, and add the cost of material, the kind of material increases and causes technique in process of production more complicated, and is more difficult to control.
Summary of the invention
For solving the above-mentioned defect that prior art exists, the object of the present invention is to provide a kind of explosion-proof electric machine rubber seal, the work-ing life of sealing-ring can be improved, improving its ozone-resistant ability, improve its lower temperature resistance, improve its sealing reliability simultaneously.
For achieving the above object, the technical solution used in the present invention is:
A kind of explosion-proof electric machine rubber seal, is made up of the raw material of following mass parts: chloroprene rubber 45-55 part, EPDM rubber 10-20 part, vulcanization system 4 ~ 6 parts, cold-resistant tenderizer 5-10 part, strengthening agent 12-18 part, cold-resistant auxiliary agent 5-10 part, the auxiliary agent of resistance to ozone 2-5 part.
Preferably, described vulcanization system comprises vulcanizing agent and vulcanization accelerator.
Preferably, described explosion-proof electric machine rubber seal, be made up of the raw material of following mass parts: chloroprene rubber 48-52 part, EPDM rubber 12-18 part, vulcanizing agent 2-3 part, vulcanization accelerator 2-3 part, cold-resistant tenderizer 6-8 part, strengthening agent 14-16 part, cold-resistant auxiliary agent 6-8 part, the auxiliary agent of resistance to ozone 3-5 part.
Preferably, described explosion-proof electric machine rubber seal, be made up of the raw material of following mass parts: chloroprene rubber 48-52 part, EPDM rubber 12-18 part, vulcanizing agent 2.5-3 part, vulcanization accelerator 2.5-3 part, cold-resistant tenderizer 6-8 part, strengthening agent 14-16 part, cold-resistant auxiliary agent 6-8 part, the auxiliary agent of resistance to ozone 3-5 part.
Preferably, described cold-resistant auxiliary agent is PVC cold-resistant agent.
Preferably, described vulcanizing agent is dicumyl peroxide.
Preferably, described vulcanization accelerator is cyanacrylate.
Preferably, described cold-resistant tenderizer is the mixture of one or more materials in stearic acid, adipic acid dioctyl ester and dioctyl sebacate.
Preferably, described strengthening agent is N330 carbon black and the S212 mixture for one or both in groove carbon black.
Preferably, the described auxiliary agent of resistance to ozone is antioxidant 4020.
A production technique for explosion-proof electric machine rubber seal, comprises the following steps:
1) after carrying out banburying in chloroprene rubber and N330 carbon black and stearic acid input Banbury mixer, form rubber unvulcanizate, leave standstill 12 hours, for subsequent use;
2) first in EPDM, adipic acid dioctyl ester is poured into, then plasticate 2-3 minute in Banbury mixer, then PVC cold-resistant agent, dioctyl sebacate and S212 is added for groove carbon black, cyanacrylate and antioxidant 4020 is added again after mixing 4-5 minute, mixing 1-2 minute, place 0.5-1 hour, after then adding the mixing 2-5 of rubber unvulcanizate minute in step 1), add dicumyl peroxide again, mixing 4-6 minute;
3) by qualified sizing material, open refining with opening rubber mixing machine, enter forcing machine and be extruded into adhesive tape, be then neatly placed on pallet stand-by, extrusion temperature controls at 100 DEG C-110 DEG C;
4) adhesive tape extruded is entered mould sulfuration on vulcanizer, curing temperature controls at 140-160 DEG C, and pressure-controlling is at 10-20MPa, and time controling is at 8-12min;
5) after the sealing-ring cooling vulcanizated, deburring arranges, and puts in storage after the assay was approved.
The beneficial effect of employing technique scheme is:
In this formula, in vulcanization system, dicumyl peroxide and cyanacrylate are the main processing aids of rubber, the difference of both CR and EPDM sulfurate activity can well be improved, vulcanizing agent skewness and the nonsynchronous problem of sulfuration in two-phase can be solved, the cross-linking density of product can be improved, improve the crosslinking degree of product, it can make rubber molecular chain generation crosslinking reaction, rubber macromolecule is made to become reticulated structure from linear, plasticity-reduces, thus guarantee the intensity of rubber, hardness, the realization of the fundamental propertys such as rebound resilience, rubber just has valuable use value after sulfuration, mechanical property improves greatly.
PVC cold-resistant agent is a kind of terpolymer, belong to high molecular solid to resist cold level softening agent, this molecular weight product is high, can suppress liquid plasticizer separate out, low temperature resistant, processing technology is good, strong adhesion, thermostability is high, adds the shock resistance that PVC cold-resistant agent can improve sealing-ring, lower temperature resistance in sealing-ring, improve its mobility, corrosion resistance nature have also been obtained raising.
Cold-resistant tenderizer is the mixture of one or more materials in stearic acid, adipic acid dioctyl ester and dioctyl sebacate.
Stearic acid has softening and plastification, is absolutely necessary in Rubber processing; The abundant diffusion of the favourable carbon black of stearic acid; Octyl adipate is lower temperature resistance softening agent, is that the typical case of rubber resists cold
plasticisingagent, plasticizing efficiency is high, and heated discoloration is little, can give the good low-temperature pliability of goods and photostabilization, and dioctyl sebacate has that plasticizing efficiency is high, volatility is low, existing excellent lower temperature resistance, has again good thermotolerance, photostabilization and electrical insulating property.
Chloroprene rubber (CR) and terpolymer EP rubber (EPDM) are used, both can be made to learn from other's strong points to offset one's weaknesses, both the ozone resistance can having improved chloroprene rubber is poor, lower temperature resistance is poor, and heat resisting temperature scope is narrower, the use temperature scope that simultaneously can improve product.Add a small amount of EPDM in chloroprene rubber after, can make blended after rubber item improve its ozone-resistant aging property and resistance to low temperature, cross-linked rubber embrittlement temperature can be down to-55 DEG C by-35 DEG C, resistance toheat has wider use temperature scope, better processing performance, lower starting material and production cost than chloroprene rubber itself simultaneously, meets the performance requriements of production domesticization component.
Strengthening agent is N330 carbon black and the S212 mixture for one or both in groove carbon black.Carbon black N330 is the high wearable carbon black be most widely used, it is the carbon black that a kind of reinforcing property is good, the good tensile property of sizing material, tear resistance, wear resistance and elasticity can be given, N330 carbon black disperses in sizing material and tubing properties might as well, S212 can give sizing material good scorching quality for groove carbon black, has lower stress at definite elongation and higher tear strength.
Add antioxidant 4020 in the present invention, sealing-ring can be made to have excellent thermotolerance, better ozone resistance, ageing resistance, simultaneously to wear resistance, flex crack, thermo-oxidative ageing and harmful metal ion also have good protective effect.
The sealing-ring that the present invention adopts above-mentioned raw materials to make, due to cold-resistant tenderizer and strengthening agent, also have a small amount of resisting cold, adding of the auxiliary agent of resistance to ozone, lower temperature resistance and the ozone resistance of product are ensured, improve ozone-resistant ability and the lower temperature resistance of sealing-ring, tensile strength is made to improve 10MPa, 100% stress at definite elongation improves 1-6MPa, 300% stress at definite elongation improves 2-6MPa, fracture is there is not at experiment condition 50pphm/40 DEG C/20 ~ 30% times, the experiment condition of resistance to low temperature is do not occur fracture under-55 DEG C/48h, can ozone in slow down air and rubber reaction, from the work-ing life increasing rubber, substantially increase the use range of rubber item, can adapt to compare rugged environment, improve the competitive power of enterprise.
Present invention process is reasonable, various starting material mix, product is evenly mixing, wherein, to starting material addition sequence, mixing time, parameter in banburying time and sulfidation controls, by curing temperature being controlled at 140 DEG C-160 DEG C, pressure-controlling is at 10-20MPa, curing time controls the fire proof motor rubber seal obtained when 10-22min and has ageing-resistant, resistance to ozone ability is strong, the advantage that resistance to low temperature is good, add N330 carbon black and S212 for groove carbon black, decrease the wearing and tearing of sealing-ring, antiwear property is strengthened greatly, the quality of product is more stable, proved by practice test, its work-ing life improves 200% than the fire proof motor sealing-ring of prior art.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited only to these examples, and under the prerequisite for departing from present inventive concept, any improvement of doing all drops within protection scope of the present invention.
Embodiment 1:
Explosion-proof electric machine rubber seal of the present invention, be made up of the raw material of following mass parts: chloroprene rubber 48.75 parts, EPDM rubber 16.25 parts, vulcanizing agent 2.5 parts, vulcanization accelerator 3 parts, cold-resistant tenderizer 8 parts, strengthening agent 14 parts, cold-resistant auxiliary agent 5 parts, the auxiliary agent of resistance to ozone 2.5 parts.Wherein, in the present embodiment, vulcanizing agent is dicumyl peroxide, vulcanization accelerator is cyanacrylate, cold-resistant tenderizer is the mixture of stearic acid, adipic acid dioctyl ester and dioctyl sebacate, strengthening agent is N330 carbon black and the S212 mixture for groove carbon black, and cold-resistant auxiliary agent is PVC cold-resistant agent, and the auxiliary agent of resistance to ozone is antioxidant 4020.
Its production technique, comprises the following steps:
1) after carrying out banburying in chloroprene rubber and N330 carbon black and stearic acid input Banbury mixer, form rubber unvulcanizate, leave standstill 12 hours, for subsequent use;
2) first in EPDM, adipic acid dioctyl ester is poured into, then plasticate in Banbury mixer 2.5 minutes, then PVC cold-resistant agent, dioctyl sebacate and S212 is added for groove carbon black, cyanacrylate and antioxidant 4020 is added again after mixing 4.5 minutes, mixing 1.5 minutes, place 40 minutes, the rubber unvulcanizate then added in step 1) adds dicumyl peroxide after mixing 3 minutes again, mixing 5 minutes;
3) by qualified sizing material, open refining with opening rubber mixing machine, enter forcing machine and be extruded into adhesive tape, be then neatly placed on pallet stand-by, extrusion temperature controls at 105 DEG C;
4) adhesive tape extruded is entered mould sulfuration on vulcanizer, curing temperature controls at 160 DEG C, and pressure-controlling is at 14MPa, and time controling is at 8min;
5) after the sealing-ring cooling vulcanizated, deburring arranges, and puts in storage after the assay was approved.
Embodiment 2
Explosion-proof electric machine rubber seal of the present invention, be made up of the raw material of following mass parts: chloroprene rubber 50.25 parts, EPDM rubber 14.75 parts, vulcanizing agent 2 parts, vulcanization accelerator 3 parts, cold-resistant tenderizer 7 parts, strengthening agent 15 parts, cold-resistant auxiliary agent 5 parts, the auxiliary agent of resistance to ozone 3 parts.Wherein, in the present embodiment, vulcanizing agent is dicumyl peroxide, and vulcanization accelerator is cyanacrylate, and cold-resistant tenderizer is stearic acid, and strengthening agent is N330 carbon black, and cold-resistant auxiliary agent is PVC cold-resistant agent, and the auxiliary agent of resistance to ozone is antioxidant 4020.
Its production technique, comprises the following steps:
1) chloroprene rubber is dropped into carry out banburying in Banbury mixer after form rubber unvulcanizate, leave standstill 12 hours, for subsequent use;
2) first in EPDM, stearic acid is poured into, then plasticate in Banbury mixer 2 minutes, then PVC cold-resistant agent and N330 carbon black is added, cyanacrylate and antioxidant 4020 is added again after mixing 5 minutes, mixing 2 minutes, place 0.5 hour, the rubber unvulcanizate then added in step 1) adds dicumyl peroxide after mixing 4 minutes again, mixing 6 minutes;
3) by qualified sizing material, open refining with opening rubber mixing machine, enter forcing machine and be extruded into adhesive tape, be then neatly placed on pallet stand-by, extrusion temperature controls at 110 DEG C;
4) adhesive tape extruded is entered mould sulfuration on vulcanizer, curing temperature controls at 140 DEG C, and pressure-controlling is at 10MPa, and time controling is at 10min;
5) after the sealing-ring cooling vulcanizated, deburring arranges, and puts in storage after the assay was approved.
Embodiment 3
Explosion-proof electric machine rubber seal of the present invention, be made up of the raw material of following mass parts: chloroprene rubber 52.25 parts, EPDM rubber 12.75 parts, vulcanizing agent 2.5 parts, vulcanization accelerator 2 parts, cold-resistant tenderizer 8 parts, strengthening agent 15 parts, cold-resistant auxiliary agent 5 parts, the auxiliary agent of resistance to ozone 2.5 parts.Wherein, in the present embodiment, vulcanizing agent is dicumyl peroxide, vulcanization accelerator is cyanacrylate, and cold-resistant tenderizer is dioctyl sebacate, and strengthening agent is that S212 is for groove carbon black, cold-resistant auxiliary agent is PVC cold-resistant agent, and the auxiliary agent of resistance to ozone is antioxidant 4020.
Its production technique, comprises the following steps:
1) chloroprene rubber is dropped into carry out banburying in Banbury mixer after form rubber unvulcanizate, leave standstill 12 hours, for subsequent use;
2) first in EPDM, dioctyl sebacate is poured into, then plasticate in Banbury mixer 3 minutes, then PVC cold-resistant agent and S212 is added for groove carbon black, cyanacrylate and antioxidant 4020 is added again after mixing 4 minutes, mixing 1 minute, place 1 hour, the rubber unvulcanizate then added in step 1) adds dicumyl peroxide after mixing 4 minutes again, mixing 5 minutes;
3) by qualified sizing material, open refining with opening rubber mixing machine, enter forcing machine and be extruded into adhesive tape, be then neatly placed on pallet stand-by, extrusion temperature controls at 100 DEG C;
4) adhesive tape extruded is entered mould sulfuration on vulcanizer, curing temperature controls at 150 DEG C, and pressure-controlling is at 16MPa, and time controling is at 12min;
5) after the sealing-ring cooling vulcanizated, deburring arranges, and puts in storage after the assay was approved.
Embodiment 4
Explosion-proof electric machine rubber seal of the present invention, be made up of the raw material of following mass parts: chloroprene rubber 52 parts, EPDM rubber 12 parts, vulcanizing agent 2.5 parts, vulcanization accelerator 2.5 parts, cold-resistant tenderizer 5 parts, strengthening agent 14 parts, cold-resistant auxiliary agent 8 parts, the auxiliary agent of resistance to ozone 4 parts.Wherein, in the present embodiment, vulcanizing agent is dicumyl peroxide, vulcanization accelerator is cyanacrylate, and cold-resistant tenderizer is the mixture of stearic acid and dioctyl sebacate, and strengthening agent is N330 carbon black, cold-resistant auxiliary agent is PVC cold-resistant agent, and the auxiliary agent of resistance to ozone is antioxidant 4020.
Its production technique, comprises the following steps:
1) after carrying out banburying in chloroprene rubber and dioctyl sebacate input Banbury mixer, form rubber unvulcanizate, leave standstill 12 hours, for subsequent use;
2) first in EPDM, stearic acid is poured into, then plasticate in Banbury mixer 3 minutes, then PVC cold-resistant agent and N330 carbon black is added, cyanacrylate and antioxidant 4020 is added again after mixing 5 minutes, mixing 1 minute, place 50 minutes, the rubber unvulcanizate then added in step 1) adds dicumyl peroxide after mixing 5 minutes again, mixing 6 minutes;
3) by qualified sizing material, open refining with opening rubber mixing machine, enter forcing machine and be extruded into adhesive tape, be then neatly placed on pallet stand-by, extrusion temperature controls at 100 DEG C;
4) adhesive tape extruded is entered mould sulfuration on vulcanizer, curing temperature controls at 160 DEG C, and pressure-controlling is at 13MPa, and time controling is at 9min;
5) after the sealing-ring cooling vulcanizated, deburring arranges, and puts in storage after the assay was approved.
Embodiment 5
Explosion-proof electric machine rubber seal of the present invention, be made up of the raw material of following mass parts: chloroprene rubber 54 parts, EPDM rubber 17 parts, vulcanizing agent 2 parts, vulcanization accelerator 3 parts, cold-resistant tenderizer 5 parts, strengthening agent 12 parts, cold-resistant auxiliary agent 5 parts, the auxiliary agent of resistance to ozone 2 parts.Wherein, in the present embodiment, vulcanizing agent is dicumyl peroxide, vulcanization accelerator is cyanacrylate, and cold-resistant tenderizer is the mixture of stearic acid and adipic acid dioctyl ester, and strengthening agent is N330 carbon black, cold-resistant auxiliary agent is PVC cold-resistant agent, and the auxiliary agent of resistance to ozone is antioxidant 4020.
Its production technique, comprises the following steps:
1) after carrying out banburying in chloroprene rubber and adipic acid dioctyl ester input Banbury mixer, form rubber unvulcanizate, leave standstill 12 hours, for subsequent use;
2) first in EPDM, stearic acid is poured into, then plasticate in Banbury mixer 3 minutes, then PVC cold-resistant agent and N330 carbon black is added, cyanacrylate and antioxidant 4020 is added again after mixing 5 minutes, mixing 2 minutes, place 1 hour, the rubber unvulcanizate then added in step 1) adds dicumyl peroxide after mixing 5 minutes again, mixing 6 minutes;
3) by qualified sizing material, open refining with opening rubber mixing machine, enter forcing machine and be extruded into adhesive tape, be then neatly placed on pallet stand-by, extrusion temperature controls at 110 DEG C;
4) adhesive tape extruded is entered mould sulfuration on vulcanizer, curing temperature controls at 160 DEG C, and pressure-controlling is at 20MPa, and time controling is at 8min;
5) after the sealing-ring cooling vulcanizated, deburring arranges, and puts in storage after the assay was approved.
Embodiment 6
Explosion-proof electric machine rubber seal of the present invention, be made up of the raw material of following mass parts: chloroprene rubber 53 parts, EPDM rubber 18 parts, vulcanizing agent 2.5 parts, vulcanization accelerator 2.5 parts, cold-resistant tenderizer 6 parts, strengthening agent 11 parts, cold-resistant auxiliary agent 5 parts, the auxiliary agent of resistance to ozone 2 parts.Wherein, in the present embodiment, vulcanizing agent is dicumyl peroxide, vulcanization accelerator is cyanacrylate, cold-resistant tenderizer is the mixture of stearic acid and adipic acid dioctyl ester, strengthening agent is N330 carbon black and the S212 mixture for groove carbon black, and cold-resistant auxiliary agent is PVC cold-resistant agent, and the auxiliary agent of resistance to ozone is antioxidant 4020.
Its production technique, comprises the following steps:
1) after carrying out banburying in chloroprene rubber and N330 carbon black and stearic acid input Banbury mixer, form rubber unvulcanizate, leave standstill 12 hours, for subsequent use;
2) first in EPDM, adipic acid dioctyl ester is poured into, then plasticate in Banbury mixer 1.5 minutes, then PVC cold-resistant agent and S212 is added for groove carbon black, cyanacrylate and antioxidant 4020 is added again after mixing 4 minutes, mixing 1.5 minutes, place 0.5 hour, the rubber unvulcanizate then added in step 1) adds dicumyl peroxide after mixing 3.5 minutes again, mixing 5 minutes;
3) by qualified sizing material, open refining with opening rubber mixing machine, enter forcing machine and be extruded into adhesive tape, be then neatly placed on pallet stand-by, extrusion temperature controls at 105 DEG C;
4) adhesive tape extruded is entered mould sulfuration on vulcanizer, curing temperature controls at 155 DEG C, and pressure-controlling is at 12MPa, and time controling is at 10min;
5) after the sealing-ring cooling vulcanizated, deburring arranges, and puts in storage after the assay was approved.
In order to ensure sealing-ring security in use, extract 10 to the sealing-ring of each group embodiment and carry out rubber performance test, and get the mean value of its test result, following table is test result.Wherein, embodiment 1 is preferred version.
| Test parameter | Not containing the neoprene latex formula of EPDM | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Hardness, Shao Er A degree | 62 | 72 | 68 | 66 | 65 | 69 | 70 |
| Stretch breaking strength, Mpa | 18 | 28.55 | 23.15 | 21.67 | 20.59 | 24.25 | 25.25 |
| Tensile yield, % | 380 | 416 | 479 | 513 | 498 | 465 | 475 |
| 100% stress at definite elongation/MPa | 2.55 | 8.56 | 4.55 | 3.45 | 3.15 | 5.65 | 6.25 |
| 300% stress at definite elongation/MPa | 12.65 | 18.69 | 15.36 | 14.53 | 14 | 16.15 | 17.15 |
| Compression set/% | 18 | 58 | 28 | 23 | 22 | 32 | 35 |
| Ozone resistance: 50pphm X 40 DEG C of X 20 ~ 30% elongations | There is fracture | Without fracture | Without fracture | Without fracture | Without fracture | Without fracture | Without fracture |
| Lower temperature resistance-55 DEG C of * 48h | There is fracture | Without fracture | Without fracture | Without fracture | Without fracture | Without fracture | Without fracture |
Annotation: it is ruptured 50pphm/40 DEG C/20% rear appearance that the resistance to ozone ability of common Chloroprene rubber formula film can reach experiment condition, for there is not fracture after-35 DEG C/24h in the experiment condition of resistance to low temperature, 100% stress at definite elongation is 2.55MPa, 300% stress at definite elongation is 12.65MPa, and compression set is 18%.
And we use worse condition, by the low temperature resistant formula of resistance to ozone to chloroprene rubber/terpolymer EP rubber Blend rubber with not containing the performance comparison analysis that the neoprene latex of terpolymer EP rubber is filled a prescription, embodiment 1, 2, 3, 4, 5, the over-all properties of chloroprene rubber in 6/terpolymer EP rubber Blend rubber formula is better than the neoprene latex formula not containing terpolymer EP rubber, wherein, the over-all properties of chloroprene rubber in embodiment 1/terpolymer EP rubber Blend rubber formula is best, ozone resistance and low temperature resistant, resistance toheat is all greatly improved, the experiment condition of ozone resistance is ruptured 50pphm/40 DEG C/20 ~ 30% rear appearance, for there is not fracture after-55 DEG C/48h in the experiment condition of resistance to low temperature, 100% stress at definite elongation is 18.69MPa, 300% stress at definite elongation is 58MPa, compression set is 36%, not only resistance to ozone can be met not only low temperature resistant but also have the requirement of fire proof motor sealing member product of wider use temperature scope, add N330 carbon black and S212 for a kind of in groove carbon black or two kinds, decrease the wearing and tearing of sealing-ring, antiwear property is strengthened greatly, the quality of product is more stable, proved by practice test, work-ing life improves 200% than the fire proof motor rubber seal of prior art.
The foregoing is only better embodiment of the present invention; protection scope of the present invention is not limited with above-mentioned embodiment; in every case those of ordinary skill in the art modify or change according to the equivalence that disclosed content is done, and all should include in the protection domain recorded in claims.
Claims (10)
1. an explosion-proof electric machine rubber seal, is characterized in that: be made up of the raw material of following mass parts: chloroprene rubber 45-55 part, EPDM rubber 10-20 part, vulcanization system 4 ~ 6 parts, cold-resistant tenderizer 5-10 part, strengthening agent 12-18 part, cold-resistant auxiliary agent 5-10 part, the auxiliary agent of resistance to ozone 2-5 part.
2. explosion-proof electric machine rubber seal according to claim 1, is characterized in that, described vulcanization system comprises vulcanizing agent and vulcanization accelerator.
3. explosion-proof electric machine rubber seal according to claim 1, it is characterized in that, be made up of the raw material of following mass parts: chloroprene rubber 48-52 part, EPDM rubber 12-18 part, vulcanizing agent 2-3 part, vulcanization accelerator 2-3 part, cold-resistant tenderizer 6-8 part, strengthening agent 14-16 part, cold-resistant auxiliary agent 6-8 part, the auxiliary agent of resistance to ozone 3-5 part.
4. explosion-proof electric machine rubber seal according to claim 1, it is characterized in that, be made up of the raw material of following mass parts: chloroprene rubber 48-52 part, EPDM rubber 12-18 part, vulcanizing agent 2.5-3 part, vulcanization accelerator 2.5-3 part, cold-resistant tenderizer 6-8 part, strengthening agent 14-16 part, cold-resistant auxiliary agent 6-8 part, the auxiliary agent of resistance to ozone 3-5 part.
5. the explosion-proof electric machine rubber seal according to claim 1 or 3 or 4, is characterized in that, described cold-resistant auxiliary agent is PVC cold-resistant agent.
6. the explosion-proof electric machine rubber seal according to any one of claim 1 or 2 or 3 or 4, it is characterized in that, described vulcanizing agent is dicumyl peroxide, and described vulcanization accelerator is cyanacrylate.
7. the explosion-proof electric machine rubber seal according to any one of claim 1 or 2 or 3 or 4, it is characterized in that, described cold-resistant tenderizer is the mixture of one or more materials in stearic acid, adipic acid dioctyl ester and dioctyl sebacate.
8. the explosion-proof electric machine rubber seal according to claim 1 or 3 or 4, it is characterized in that, the described auxiliary agent of resistance to ozone is antioxidant 4020.
9. the explosion-proof electric machine rubber seal according to claim 1 or 3 or 4, is characterized in that, described strengthening agent is N330 carbon black and the S212 mixture for one or both in groove carbon black.
10. a production technique for explosion-proof electric machine rubber seal, is characterized in that, comprises the following steps:
After carrying out banburying in chloroprene rubber and N330 carbon black and stearic acid input Banbury mixer, form rubber unvulcanizate, leave standstill 12 hours, for subsequent use;
First in EPDM, pour adipic acid dioctyl ester into, then plasticate 2-3 minute in Banbury mixer, then PVC cold-resistant agent, dioctyl sebacate and S212 is added for groove carbon black, cyanacrylate and antioxidant 4020 is added again after mixing 4-5 minute, mixing 1-2 minute, place 0.5-1 hour, after then adding the mixing 2-5 of rubber unvulcanizate minute in step 1), add dicumyl peroxide again, mixing 4-6 minute;
By qualified sizing material, open refining with opening rubber mixing machine, enter forcing machine and be extruded into adhesive tape, be then neatly placed on pallet stand-by, extrusion temperature controls at 100 DEG C-110 DEG C;
The adhesive tape extruded is entered mould sulfuration on vulcanizer, and curing temperature controls at 140-160 DEG C, and pressure-controlling is at 10-20MPa, and time controling is at 8-12min;
After the sealing-ring cooling vulcanizated, deburring arranges, and puts in storage after the assay was approved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510089724.2A CN104592603A (en) | 2015-02-27 | 2015-02-27 | Novel rubber seal ring for explosion-proof motor and production technology for rubber seal ring for |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510089724.2A CN104592603A (en) | 2015-02-27 | 2015-02-27 | Novel rubber seal ring for explosion-proof motor and production technology for rubber seal ring for |
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| Publication Number | Publication Date |
|---|---|
| CN104592603A true CN104592603A (en) | 2015-05-06 |
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| CN201510089724.2A Pending CN104592603A (en) | 2015-02-27 | 2015-02-27 | Novel rubber seal ring for explosion-proof motor and production technology for rubber seal ring for |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106279851A (en) * | 2016-08-31 | 2017-01-04 | 芜湖恒耀汽车零部件有限公司 | Automobile gas exhausting manifold branch rubber seal cover |
| CN110577705A (en) * | 2019-09-05 | 2019-12-17 | 天长市宏福电子有限公司 | high-sealing-performance rubber material for pressure sensor and preparation method thereof |
| CN112898646A (en) * | 2019-12-04 | 2021-06-04 | 湖南创安防爆电器有限公司 | Sealing rubber ring for explosion-proof motor |
| CN114854107A (en) * | 2022-05-05 | 2022-08-05 | 广东联塑科技实业有限公司 | Oil-resistant low-temperature-resistant rubber material and preparation method and application thereof |
| CN114962640A (en) * | 2022-06-15 | 2022-08-30 | 爱奇迹(深圳)创新科技有限公司 | Oil leakage prevention sealing ring and machining method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101118027A (en) * | 2006-07-31 | 2008-02-06 | 中山市邦达实业有限公司 | Communicating sealed ring and method for making same |
| CN104086902A (en) * | 2014-07-02 | 2014-10-08 | 安徽宁国尚鼎橡塑制品有限公司 | High-temperature-resistant rubber sealing ring for automobiles |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118027A (en) * | 2006-07-31 | 2008-02-06 | 中山市邦达实业有限公司 | Communicating sealed ring and method for making same |
| CN104086902A (en) * | 2014-07-02 | 2014-10-08 | 安徽宁国尚鼎橡塑制品有限公司 | High-temperature-resistant rubber sealing ring for automobiles |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106279851A (en) * | 2016-08-31 | 2017-01-04 | 芜湖恒耀汽车零部件有限公司 | Automobile gas exhausting manifold branch rubber seal cover |
| CN110577705A (en) * | 2019-09-05 | 2019-12-17 | 天长市宏福电子有限公司 | high-sealing-performance rubber material for pressure sensor and preparation method thereof |
| CN112898646A (en) * | 2019-12-04 | 2021-06-04 | 湖南创安防爆电器有限公司 | Sealing rubber ring for explosion-proof motor |
| CN114854107A (en) * | 2022-05-05 | 2022-08-05 | 广东联塑科技实业有限公司 | Oil-resistant low-temperature-resistant rubber material and preparation method and application thereof |
| CN114854107B (en) * | 2022-05-05 | 2023-09-01 | 广东联塑科技实业有限公司 | Oil-resistant low-temperature-resistant rubber material and preparation method and application thereof |
| CN114962640A (en) * | 2022-06-15 | 2022-08-30 | 爱奇迹(深圳)创新科技有限公司 | Oil leakage prevention sealing ring and machining method thereof |
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Application publication date: 20150506 |