CN104194079B - A kind of Composite Material Seal Ring and manufacture craft thereof - Google Patents
A kind of Composite Material Seal Ring and manufacture craft thereof Download PDFInfo
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- CN104194079B CN104194079B CN201410499346.0A CN201410499346A CN104194079B CN 104194079 B CN104194079 B CN 104194079B CN 201410499346 A CN201410499346 A CN 201410499346A CN 104194079 B CN104194079 B CN 104194079B
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Abstract
The invention discloses a kind of Composite Material Seal Ring and manufacture craft thereof, the sealing-ring belonging to elastomeric material makes field.A kind of Composite Material Seal Ring of the present invention, constitutive material has: natural rubber 10 ~ 100 parts, 10 ~ 100 parts, styrene-butadiene rubber(SBR), high styrene resin 10 ~ 100 parts, 2 ~ 10 parts, zinc oxide, stearic acid 1 ~ 3 part, altax 0.5 ~ 2 part, accelerator CBS 0.5 ~ 2 part, anti-aging agent RD 1 ~ 3 part, antioxidant 4010NA 1 ~ 3 part, petroleum resin 2 ~ 10 parts, high wear-resistant carbon black 20 ~ 100 parts, Universal carbon black 20 ~ 100 parts, 0.5 ~ 4 part, sulphur, polyvinyl staple fibre master batch 3 ~ 20 parts.Manufacture craft of the present invention, the first making polyvinyl staple fibre master batch of innovation formula, use when extrusion moulding staple fibre to align in sizing material in addition, make working face to have higher tearing strength, sulfuration process adopts step up cure make state of vulcanization uniformity.The sealing-ring using the present invention to make has that compression set is low, good springiness, hardness are high, also has that tear resistance is good, the effect of good sealing effect concurrently.
Description
Technical field
The sealing-ring that the present invention relates to elastomeric material makes field, particularly relates to a kind of Composite Material Seal Ring and manufacture craft thereof.
Background technology
Nodular Cast Iron Pipes enterprise of state is when carrying out factory inspection, and need to carry out the water test to every root cast tube, cast tube bell and spigot two ends need seal with sealing-ring, reaches regulation nominal pressure and keeps for some time toward cast tube intracontour waterflooding.The contact area of cast tube socket end is very little, thus needs to bear very large mechanical shear stress.The sealing-ring product of current use can not meet the needs of this type of production operation, often just there will be within use very short time tear, the phenomenon such as distortion thus lose use value, major cause one is that formulating of recipe is unreasonable: original product design for rubber formulation generally adopts General Purpose Rubber, hardness is lower, tear resistance is poor, compression set is large, not ageing-resistant; Two is that sulfuration process is unreasonable, and work in-process can cause the difference of performance inside and outside product because inside and outside state of vulcanization is inconsistent thus affects work-ing life of the finished product in sulfidation.
China Patent Publication No.: 102731865A, publication date: the rubber combination that patent document discloses a kind of paracril and epoxy natural rubber on October 17th, 2012, this invention is by paracril 3345, epoxy natural rubber, anti-aging agent RD, antioxidant MB, stearic acid, SULPHUR POWDER, Microcrystalline Wax, zinc oxide, processing aid WB212, white carbon black, carbon black N330, triethyl citrate, Vulcanization accelerator TMTD, accelerant CZ, altax, nano barite, light calcium carbonate, chalk, high styrene resin, phenylformic acid etc. are made.The rubber combination compression set of this invention is low, good springiness, hardness are high, for making the rubber items such as sealing-ring, cost-saved, but this invention is due to the good elasticity of too high pursuit, employ a large amount of triethyl citrates, cause the sealing-ring tear resistance of making poor, the making of water test rubber seal can not be applied to.
Summary of the invention
1. invent the technical problem that will solve
Poor for the water test rubber seal tear resistance existed in prior art, hardness is lower, compression set is large and the problem such as not ageing-resistant, the invention provides a kind of Composite Material Seal Ring and manufacture craft thereof.The composite material rubber sealing-ring compression set that it can realize making is low, good springiness, hardness are high, especially good, the good sealing effect of tear resistance.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
A kind of Composite Material Seal Ring, is made up of the raw material of following weight part:
Natural rubber 10 ~ 100 parts, 10 ~ 100 parts, styrene-butadiene rubber(SBR), high styrene resin 10 ~ 100 parts, 2 ~ 10 parts, zinc oxide, stearic acid 1 ~ 3 part, altax 0.5 ~ 2 part, accelerator CBS 0.5 ~ 2 part, anti-aging agent RD 1 ~ 3 part, antioxidant 4010NA 1 ~ 3 part, petroleum resin 2 ~ 10 parts, high wear-resistant carbon black 20 ~ 100 parts, Universal carbon black 20 ~ 100 parts, 0.5 ~ 4 part, sulphur, polyvinyl staple fibre master batch 3 ~ 20 parts.
Preferably, be made up of the raw material of following weight part:
Natural rubber 30 parts, 40 parts, styrene-butadiene rubber(SBR), high styrene resin 30 parts, 5 parts, zinc oxide, stearic acid 1.5 parts, altax 1 part, accelerator CBS 1.2 parts, anti-aging agent RD 1.5 parts, antioxidant 4010NA 1.5 parts, petroleum resin 3 parts, high wear-resistant carbon black 60 parts, Universal carbon black 30 parts, 2 parts, sulphur, polyvinyl staple fibre master batch 10 parts.
A manufacture craft for Composite Material Seal Ring according to claims 1 or 2, the steps include:
1) first make polyvinyl staple fibre master batch: add polyvinyl canvas and part of stearic acid by after part natural rubber on a mill until 0.5-2mm thin-pass, mixing evenly after, stand-by;
2) plasticated on a mill until by part natural rubber, the mooney viscosity ML (1+4) 100 DEG C that plasticates controls 60 ± 5 again;
3) then natural rubber, styrene-butadiene rubber(SBR), high styrene resin and step 1 will be remained) the polyvinyl staple fibre master batch that makes drops into Banbury mixer, add high wear-resistant carbon black, Universal carbon black, zinc oxide, step 1 successively again) remaining stearic acid, altax, accelerator CBS, anti-aging agent RD, antioxidant 4010NA and petroleum resin afterwards, mixing 2 ~ 3 minutes, mention floating weight sulphur is added, binder removal after mixing 30 ~ 60 seconds again, bottom sheet, cooling after mill turns refining; Mooney viscosity ML (1+4) 100 DEG C controls 70 ± 5;
4) by step 3) cooled sizing material rolls through rolling press, and the polyvinyl staple fibre in polyvinyl staple fibre master batch is forward arranged by rolling direction, then undertaken shaping by the weight of regulation;
5) work in-process of forming are put into 60 ~ 80 DEG C of baking oven preheatings;
6) preheated sizing material is dropped into die cavity and prolongs the pressure even radial array in direction by it, push vulcanizing press and carry out sulfuration:
Curing temperature controls at 130 ~ 140 DEG C by A, initial vulcanization step, vulcanizing press matched moulds oil pressure cntrol at 14 ~ 16Mpa, curing time 10 minutes;
Curing temperature controls at 150 ~ 160 DEG C mid-term by B, sulfuration, vulcanizing press matched moulds oil pressure cntrol at 12 ~ 14Mpa, curing time 10 ~ 20 minutes;
Curing temperature controls at 130 ~ 140 DEG C by C, sulfuration later stage, vulcanizing press matched moulds oil pressure cntrol at 10 ~ 12Mpa, curing time 10 minutes;
7) after sulfuration, after finishing, inspection, Composite Material Seal Ring completes.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, there is following beneficial effect:
(1) a kind of Composite Material Seal Ring of the present invention, employ the combination of natural rubber, high styrene resin and polyvinyl staple fibre master batch, and the synergy of three kinds of components is embodied in, combinationally using of these three kinds of components substantially increases sealing-ring anti tear and strength property, hardness and tearing toughness do not add raising 10 ~ 15%, and its performance is far superior to only add the hardness of the sealing-ring that high styrene resin improves or only add the tearing toughness of the sealing-ring that polyvinyl staple fibre master batch increases.Through test repeatedly and record analysis, the present invention determines the optimum weight proportioning of these three kinds of components, avoid and add the technical problem that high styrene resin reduces the tearing toughness of sealing-ring and the hardness of interpolation polyvinyl staple fibre master batch reduction sealing-ring, make the anti tear of sealing-ring and strength property all be in the best, the composite material rubber sealing-ring tear resistance of production be good, good sealing effect;
(2) a kind of Composite Material Seal Ring of the present invention, determines the preferred weight proportion of each raw material: natural rubber 30 parts, 40 parts, styrene-butadiene rubber(SBR), high styrene resin 30 parts, 5 parts, zinc oxide, stearic acid 1.5 parts, altax 1 part, accelerator CBS 1.2 parts, anti-aging agent RD 1.5 parts, antioxidant 4010NA 1.5 parts, petroleum resin 3 parts, high wear-resistant carbon black 60 parts, Universal carbon black 30 parts, 2 parts, sulphur, polyvinyl staple fibre master batch 10 parts.With the cross-linked rubber that it makes, have good compression set performance and tear resistance, tearing toughness can reach 80 ~ 120KN/m;
(3) manufacture craft of a kind of Composite Material Seal Ring of the present invention, polyvinyl staple fibre is added for needs, first the making polyvinyl staple fibre master batch of innovation formula, instead of directly add polyvinyl staple fibre, the polyvinyl staple fibre added like this mixes, dispersity more directly adds rising rank, thus makes tensile property more directly add raising 10%;
(4) a kind of Composite Material Seal Ring of the present invention and manufacture craft thereof, the Composite Material Seal Ring of production, owing to having good compression set performance and tear resistance, is highly suitable for water test sealing-ring, is convenient to promote the use of.
Embodiment
For understanding content of the present invention further, the present invention is described in detail in conjunction with the embodiments.
Embodiment 1
A kind of Composite Material Seal Ring of the present embodiment, is made up of the raw material of following weight part:
Natural rubber 10 parts, 100 parts, styrene-butadiene rubber(SBR), high styrene resin 10 parts, 10 parts, zinc oxide, stearic acid 1 part, altax 2 parts, accelerator CBS 0.5 part, anti-aging agent RD 3 parts, antioxidant 4010NA 1 part, petroleum resin 10 parts, high wear-resistant carbon black 20 parts, Universal carbon black 100 parts, 0.5 part, sulphur, polyvinyl staple fibre master batch 20 parts.
The manufacture craft of a kind of Composite Material Seal Ring of the present embodiment, the steps include:
1) first make polyvinyl staple fibre master batch: add 19.5 parts of polyvinyl canvas and 0.5 part of stearic acid by after 4 parts of natural rubbers on a mill until 0.5-2mm thin-pass, mixing evenly after, stand-by;
2) plasticated on a mill until by 4 parts of natural rubbers, the mooney viscosity ML (1+4) 100 DEG C that plasticates controls 60 ± 5 again;
3) then by residue 2 parts of natural rubbers, 100 parts of styrene-butadiene rubber(SBR), 10 parts of high styrene resins and steps 1) 20 parts of polyvinyl staple fibre master batchs making drop into Banbury mixeies, add 20 parts of high wear-resistant carbon blacks more successively, 100 parts of Universal carbon black, 10 parts of zinc oxide, step 1) remaining 0.5 part of stearic acid afterwards, 2 parts of altaxs, 0.5 part of accelerator CBS, 3 parts of anti-aging agent RDs, 1 part of antioxidant 4010NA and 10 parts of petroleum resin, mixing 2 ~ 3 minutes, mention floating weight 0.5 part of sulphur is added, binder removal after mixing 30 ~ 60 seconds again, bottom sheet after mill turns refining, cooling, mooney viscosity ML (1+4) 100 DEG C controls 70 ± 5,
4) by step 3) cooled sizing material rolls through rolling press, the polyvinyl staple fibre in polyvinyl staple fibre master batch is forward arranged by rolling direction, then it is shaping to carry out segmentation by weight;
5) work in-process of forming are put into 60 ~ 80 DEG C of baking oven preheatings;
6) preheated sizing material is dropped into die cavity and prolongs the pressure even radial array in direction by it, push vulcanizing press and carry out sulfuration:
Curing temperature controls at 130 ~ 140 DEG C by A, initial vulcanization step, vulcanizing press matched moulds oil pressure cntrol at 14 ~ 16Mpa, curing time 10 minutes;
Curing temperature controls at 150 ~ 160 DEG C mid-term by B, sulfuration, vulcanizing press matched moulds oil pressure cntrol at 12 ~ 14Mpa, curing time 10 ~ 20 minutes;
Curing temperature controls at 130 ~ 140 DEG C by C, sulfuration later stage, vulcanizing press matched moulds oil pressure cntrol at 10 ~ 12Mpa, curing time 10 minutes;
7) after sulfuration, after finishing, inspection, Composite Material Seal Ring completes.
The rubber seal of a kind of Composite Material Seal Ring production of the present embodiment, tear resistance can reach 80 ~ 120KN/m, but elasticity is slightly poor.
Embodiment 2
A kind of Composite Material Seal Ring of the present embodiment, is through test repeatedly and record analysis, just determines their weight optimum ratio: natural rubber 30 parts; 40 parts, styrene-butadiene rubber(SBR), high styrene resin 30 parts, 5 parts, zinc oxide; stearic acid 1.5 parts, altax 1 part, accelerator CBS 1.2 parts; anti-aging agent RD 1.5 parts, antioxidant 4010NA 1.5 parts, petroleum resin 3 parts; high wear-resistant carbon black 60 parts; Universal carbon black 30 parts, 2 parts, sulphur, polyvinyl staple fibre master batch 10 parts.
The manufacture craft of a kind of Composite Material Seal Ring of the present embodiment, its step is substantially with embodiment 1, difference is that the parts by weight of raw materials added is different, the rubber seal that a kind of Composite Material Seal Ring of the present embodiment is produced has that compression set is low, good springiness, hardness are high, also have that tear resistance is good, the effect of good sealing effect concurrently, tearing toughness can reach 80 ~ 120KN/m.
Embodiment 3
A kind of Composite Material Seal Ring of the present embodiment, is made up of the raw material of following weight part:
Natural rubber 100 parts, 10 parts, styrene-butadiene rubber(SBR), high styrene resin 100 parts, 2 parts, zinc oxide, stearic acid 3 parts, altax 0.5 part, accelerator CBS 2 parts, anti-aging agent RD 1 part, antioxidant 4010NA 3 parts, petroleum resin 2 parts, high wear-resistant carbon black 100 parts, Universal carbon black 20 parts, 4 parts, sulphur, polyvinyl staple fibre master batch 3 parts.
The manufacture craft of a kind of Composite Material Seal Ring of the present embodiment, its step is substantially with embodiment 1, and difference is that the parts by weight of raw materials added is different.
The rubber seal of a kind of Composite Material Seal Ring production of the present embodiment, elasticity is best, but tear resistance is slightly poor, can only reach 40 ~ 50KN/M.
Example of the present invention is only be described the preferred embodiment of the present invention; not design of the present invention and scope are limited; under the prerequisite not departing from design philosophy of the present invention; the various distortion that this area engineering technical personnel make technical scheme of the present invention and improvement; all should fall into protection scope of the present invention, oneself warp of technology contents of request protection of the present invention is all recorded in detail in the claims.
Claims (1)
1. a manufacture craft for Composite Material Seal Ring, described Composite Material Seal Ring is made up of the raw material of following weight part:
Natural rubber 10 ~ 100 parts, 10 ~ 100 parts, styrene-butadiene rubber(SBR), high styrene resin 10 ~ 100 parts, 2 ~ 10 parts, zinc oxide, stearic acid 1 ~ 3 part, altax 0.5 ~ 2 part, accelerator CBS 0.5 ~ 2 part, anti-aging agent RD 1 ~ 3 part, antioxidant 4010NA 1 ~ 3 part, petroleum resin 2 ~ 10 parts, high wear-resistant carbon black 20 ~ 100 parts, Universal carbon black 20 ~ 100 parts, 0.5 ~ 4 part, sulphur, polyvinyl staple fibre master batch 3 ~ 20 parts;
Its manufacturing process steps is:
1) first make polyvinyl staple fibre master batch: add polyvinyl canvas and part of stearic acid by after part natural rubber on a mill until 0.5-2mm thin-pass, mixing evenly after, stand-by;
2) plasticated on a mill until by part natural rubber, the mooney viscosity ML (1+4) 100 DEG C that plasticates controls 60 ± 5 again;
3) then natural rubber, styrene-butadiene rubber(SBR), high styrene resin and step 1 will be remained) the polyvinyl staple fibre master batch that makes drops into Banbury mixer, add high wear-resistant carbon black, Universal carbon black, zinc oxide, step 1 successively again) remaining stearic acid, altax, accelerator CBS, anti-aging agent RD, antioxidant 4010NA and petroleum resin afterwards, mixing 2 ~ 3 minutes, mention floating weight sulphur is added, binder removal after mixing 30 ~ 60 seconds again, bottom sheet, cooling after mill turns refining; This step mooney viscosity ML (1+4) 100 DEG C controls 70 ± 5;
4) by step 3) cooled sizing material rolls through rolling press, and the polyvinyl staple fibre in polyvinyl staple fibre master batch is forward arranged by rolling direction, then undertaken shaping by the weight of regulation;
5) work in-process of forming are put into 60 ~ 80 DEG C of baking oven preheatings;
6) preheated sizing material is dropped into die cavity by the even radial array of its rolling direction, pushes vulcanizing press and carry out sulfuration:
Curing temperature controls at 130 ~ 140 DEG C by A, initial vulcanization step, vulcanizing press matched moulds oil pressure cntrol at 14 ~ 16Mpa, curing time 10 minutes;
Curing temperature controls at 150 ~ 160 DEG C mid-term by B, sulfuration, vulcanizing press matched moulds oil pressure cntrol at 12 ~ 14Mpa, curing time 10 ~ 20 minutes;
Curing temperature controls at 130 ~ 140 DEG C by C, sulfuration later stage, vulcanizing press matched moulds oil pressure cntrol at 10 ~ 12Mpa, curing time 10 minutes;
7) after sulfuration, after finishing, inspection, Composite Material Seal Ring completes.
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| CN113861522A (en) * | 2021-10-25 | 2021-12-31 | 昆明翔鹰机电设备有限公司 | Wear-resistant anti-fatigue synthetic rubber material |
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