CN108948447A - A kind of ship machinery highly elastic shaft coupling rubber and its vulcanization preparation method - Google Patents
A kind of ship machinery highly elastic shaft coupling rubber and its vulcanization preparation method Download PDFInfo
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Abstract
The present invention relates to a kind of manufacturing process of highly elastic shaft coupling, more particularly, to a kind of ship machinery highly elastic shaft coupling rubber and its vulcanization preparation method.Its state of cure (vulcanization) for mainly solving vulcanization process present in the prior art is not high, and comprehensive damping property is lower, and high temperature resistant, endurance, resistance to weather, rubber mechanical property is poor, can not produce the technical problem of processing etc. in batches.The composition and parts by weight of rubber of the invention are as follows: 90-110 parts of natural gum, 4-6 parts of zinc oxide, 0.5-2 parts of stearic acid, 10-35 parts of high wear-resistant carbon black, 20-45 parts of Universal carbon black, 0-6 parts of white carbon black, 1-2 parts of sulphur, 1-2 parts of promotor, 2-4 parts of anti-aging agent, 0.1-1 parts of antiscorching agent, 0.5-2 parts of dispersing agent, 0-10 parts of softening agent, through overfire air one step cure, pressurization post vulcanization, three sections of room temperature vulcanizations.
Description
Technical field
The present invention relates to a kind of manufacturing process of highly elastic shaft coupling, more particularly, to a kind of ship machinery high resiliency shaft coupling
Device rubber and its vulcanization preparation method.
Background technique
Ship machinery highly elastic shaft coupling is the important connection parts between diesel engine and gear-box, can compensate adjacent machine
Axial displacement, radial displacement and the angular displacement of tool axis, it is used to transmit the power of diesel engine to subsidiary engine end, while dynamic in transmitting
Certain delay, i.e. phase difference are generated on the time of power.Highly elastic shaft coupling transmits torque by elastic element, and power is adjusted
The torque characteristic of system, and vibration can be effectively absorbed, resonance speed is reduced, improves the working condition of shafting, extends equipment
Maintenance cycle and service life.Chinese patent discloses a kind of rubber vulcanization process (publication number: CN106378893A) comprising
It is kneaded, rubber compound is examined and vulcanisation step: 1) being kneaded: by butadiene-styrene rubber, cis-butadiene cement, zinc oxide, stearic acid, anti-aging agent below
4010NA, anti-aging agent RD, antioxidant d, captax, altax, paraffin, coumarone, carbon black N330, carbon black N660, machine oil,
It is 70:30:4.6:1.8:0.9:0.9:0.8:0.7:1.2:0.5:5:38:20:15 according to mass percent proportion, after mixing,
It is added in mixer and is kneaded, the melting temperature for controlling mixer is 40-80 DEG C, mixing time 10-20min；2) rubber compound is examined
It tests: test being sampled to the rubber compound after mixing, process and numerical value carry out as follows for method and test value, and choose
The rubber compound of whole test value qualifications: a, being tested using Shore A durometer, qualified Shore A hardness value range: 63 ± 3；B, it uses
Puller system test, tensile strength numberical range: >=15MPa；C, it is tested using puller system, elongation at break numberical range: >=
400%；D, it is tested using puller system, Shore A durometer, heat ageing numberical range: firmness change (HS) 15%MAX, tensile strength
Change rate 25%MAX, elongation percentage change rate 25%MAX；E, it is tested using special fixtures, baking oven, compression set numberical range:
<35%；F, black brittleness, when showing themselves in that temperature is gradually decrease to -45 DEG C, rubber compound flawless are tested using cryogenic box；G, make
Tested with ozone and aging resistance chamber, ozone resistance: 40 degrees Celsius, under the ozone partial pressure of 50mPa, exposure 72 hours is mixed
Refining glue flawless；H, it is tested using puller system, sulfurating strength numberical range: >=4MPa；3) vulcanize: by above step 2) it is resulting
Rubber compound, sulphur powder and the promotor TT of whole test value qualifications are 180:1.7:0.2 according to mass percent proportion, mixing
Afterwards, it is added in vulcanizing press or mold and is vulcanized, control conditions of vulcanization are as follows: vulcanization time: 600-700s；Upper heating temperature
Degree setting: 160 ± 10 DEG C；Lower heating temperature setting: 160 ± 10 DEG C；Pressure: 18-21Mpa.But the sulphur of this process
Change degree is not high, and comprehensive damping property is lower, and high temperature resistant, endurance, resistance to weather, rubber mechanical property is poor, can not give birth in batches
Produce processing.
Summary of the invention
The present invention is to provide a kind of ship machinery highly elastic shaft coupling rubber and its vulcanization preparation method, mainly solves
The state of cure (vulcanization) of vulcanization process present in the prior art is not high, and comprehensive damping property is lower, high temperature resistant, endurance, resistance to
Weather, rubber mechanical property is poor, can not produce the technical problem of processing etc. in batches.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals:
A kind of ship machinery highly elastic shaft coupling rubber of the invention, it is characterised in that the composition and parts by weight of the rubber
Are as follows: 70-100 parts of natural rubber, 30-0 parts of specific rubber, 4-6 parts of zinc oxide, 0.5-2 parts of stearic acid, high wear-resistant carbon black 10-35
Part, 20-45 parts of low-heat-generation carbon black, 0-8 parts of white carbon black, 0.6-1 parts of coupling agent, 1-2 parts of sulphur, 1-2 parts of promotor, anti-aging agent
2-4 parts, 0.1-1 parts of antiscorching agent, 0.5-2 parts of dispersing agent, 0-10 parts of softening agent, 1-3 parts of tackifier, 1-2 parts of anti-recovery agent,
1-2 parts of flowable.Promotor is added in sizing material, vulcanizing agent can be promoted to activate, to accelerate the friendship between vulcanizing agent and rubber molecule
Connection reaction reaches and shortens vulcanization time, reduces curing temperature, increases yield, reduces production cost and improve the physical of rubber
Can, multi items promotor is used in combination, and molecule can be made to combine stronger, using sulfenamide, thiazoles etc..Anti-aging agent is main
It is to prevent rubber light aging, heat ageing and cracking, the compound combined effect of multi items is more preferable, there is aldehyde amines etc..The application of antiscorching agent,
With the raising of the development of production and rubber product performance in rubber industry, occurs rubber heat amount in process in succession
The problem of increase.Especially in the high temperature of Modern Features, quickly, in Efficient Process Technology and adapted easily causes the material of incipient scorch
Material, incipient scorch problem are easier to occur, it is ensured that the safety in process has become a very important project.Therefore, prevent
Burnt agent becomes an important operation auxiliary agent of rubber processing safety, we use two kinds of antiscorching agent and are used in combination.The application of dispersing agent,
Rubber disperse agent mainly plays the role of several respects 1) balancing function: outstanding stepless action can make the glue of opposed polarity
It is uniformly mixed between kind, one integrated mass greatly improves the performance of rubber product entirety；2) divergent function: to carbon black and other match
The dispersion of mixture can play extraordinary peptizaiton, to improve its efficiency, and can improve compounding agent well in sizing material
In compatibility, reduce bloom；3) modeling solution function: this product can effectively promote the plasticity of sizing material, but not influence the property of product
Energy；4) mobility for improving sizing material, shortens mixing time nearly 1/3, improves mixing and efficiency, can greatly reduce extrusion
Bubble in sizing material prevents from occurring lacking material in product；5) it improves rate of extrusion and squeezes out the dimensional stability of sizing material, be conducive to
Stripping operation；6) stability between sizing material batch is improved；7) anti-reversion behaviour and scorch safe of vulcanizate are improved
Property.We are in different formulas with different dispersing agents.The main function of softening agent is that various compounding agents is enable equably to divide
It is dispersed in rubber, to reduce energy consumption and shortening process time of the sizing material in processing, viscosity, the enhancing that can enhance sizing material are attached
Put forth effort, there is fatty oil softener, petroleum line softener.We also use several softening agents.These products are commercial product
In addition, we in terms of done many improvement, we are on the one hand using can greatly improve mechanical strength
Material, while adapted heat is low, elasticity is good carbon black, as N550 N660 carbon black, and with white carbon black system and some auxiliary agents,
Can either improve in this way sizing material tear resistance, reduce collapse collapsing, in addition very well performance damping under the action of, while prevent because
It damps excessive and leads to the excessively high damage of product temperature, other innovative points are shown in specific discussion.
A kind of ship machinery highly elastic shaft coupling rubber and its vulcanization preparation method, the method include:
A. hot-air one step cure: each component of claim 1 is mixed, is pressed into the film of 5-15mm thickness, uniformly
It is placed in hot air case, is kept for 30-80 minutes under the conditions of 60-80 DEG C；
B. pressurize post vulcanization: the sizing material after one step cure is pressed into sulfurizing mould, is 130-150 DEG C in mold temperature, mold
Pressure is kept for 30-200 minutes under the conditions of being 15-20MPa；
C. three sections of room temperature vulcanizations: the sizing material after post vulcanization is taken out, and is kept for 8-24 hours at room temperature.
Sizing material is carried out hot-air one step cure by us first, this has added some fine materials in the process, is pressed into one
The film for determining thickness carries out, and changes the method for previous punching, which prevent the splintery problems of sizing material, while sizing material being put
Enter baking oven to be heated, herein maximum benefit, sizing material internal and external temperature is uniform, prevents local over cure and deficient sulphur, shortens vulcanization
Time improves physical property.It is formulated feature according to us, has made special heating equipment by oneself, this process temperature controls ratio
It is more important.Post vulcanization, we have been precisely controlled sulfuration process according to day this technology.
Therefore, the rubber that the present invention makes has good comprehensive damping property, high temperature resistant, endurance, resistance to weather, rubber
Mechanical property consistency is good, convenient for batch production processing, the highly elastic shaft coupling product suitable for ship machinery field.
Specific embodiment
Below by embodiment, the technical solutions of the present invention will be further described.
Embodiment 1: a kind of ship machinery highly elastic shaft coupling rubber of this example, composition and parts by weight are as follows: isoprene rubber
70 parts, 30 parts of cis-butadiene cement, 6 parts of zinc oxide, 1.5 parts of stearic acid, 20 parts of high wear-resistant carbon black, 35 parts of N550 carbon black, 8 parts of white carbon black,
0.8 part of coupling agent SI-69,1.5 parts of sulphur, 2 parts of accelerator DZ, 1.5 parts of antioxidant 4010NA, anti-scorching agent CTP 0.3
Part, 1 part of dispersing agent NF, 8 parts of softening agent.
This formula is mainly characterized by and has used the relatively good cis-butadiene cement of pliability, the low N550 carbon black of heat, and environment-friendly type promotes
Agent DZ, there are also the pretty good white carbon blacks of performance, but white carbon black adsorption is very strong, and hydrogen bond is easily formed between particle, and hardly possible is dispersed,
So being added improves rubber compounding dispersing agent NF, coupling agent that can improve comprehensive performance etc., relatively conventional good of properties of rubber.
When mixer mixing, isoprene rubber, cis-butadiene cement etc. are added at first and is plasticized, abrasion resistant carbon black, N550 are then increased
Carbon black, white carbon black, coupling agent SI-69, then plus liquid softener, then plus zinc oxide, stearic acid, antioxidant 4010NA, dispersion
Agent NF etc. finally adds accelerator DZ, anti-scorching agent CTP, sulphur etc. in open mill.Compounding agent be scattered in complexity in rubber with
Its surface nature is related.Can be basically divided into two classes according to its surface nature: one kind is with hydrophily, and another kind of is to have to dredge
Aqueous, in order to improve the degree of scatter of compounding agent, we improve melting effect, simultaneously using the method that dispersing agent NF is added
It can also stablize dispersity of the compounding agent particle dispersed in rubber, to improve the stability of rubber compound.
Sizing material test: hardness shore A:63 ± 3；B, puller system is tested, tensile strength numberical range: >=18MPa；C, it uses
Puller system test, elongation at break numberical range: >=400%；D, it is tested using puller system, Shore A durometer, heat ageing numerical value
Range: firmness change (HS) 15%MAX, tensile strength change rate 25%MAX, elongation percentage change rate 25%MAX；E, using special folder
Tool, baking oven test, compression set numberical range: < 35%；F, using cryogenic box test black brittleness, show themselves in that temperature by
When being gradually reduced to -45 DEG C, rubber compound flawless；G, tested using ozone and aging resistance chamber, ozone resistance: 40 is Celsius
It spends, under the ozone partial pressure of 50mPa, exposure 72 hours, rubber compound flawless；H, it is tested using puller system, sulfurating strength numerical value model
It encloses: >=4Mpa
A kind of vulcanization preparation method of ship machinery highly elastic shaft coupling rubber, the steps include:
A. hot-air one step cure: each component of embodiment 1 is mixed, the film of 8mm thickness is pressed into, is uniformly placed on
In hot air case, kept for 40 minutes under the conditions of 70 DEG C；
B. pressurize post vulcanization: the sizing material after one step cure is pressed into sulfurizing mould, is 145 DEG C in mold temperature, die pressure
To be kept for 47 minutes under the conditions of 18MPa；
C. three sections of room temperature vulcanizations: the sizing material after post vulcanization is taken out, and is kept for 12 hours at room temperature.
Such as the HGTL4.5 specification that we produce, weight 5.08Kg, one step cure is 70 DEG C * 47 and divides, post vulcanization 47
Minute, 1.5 hours were needed in the past, substantially reduce the time now, while improving production capacity, saving the energy, improved product
Quality, three sections of vulcanizations are kept for 12 hours at room temperature.
Embodiment 2: a kind of ship machinery highly elastic shaft coupling rubber of this example, composition and parts by weight are as follows: natural rubber
100 parts, 8 parts of zinc oxide, 2 parts of stearic acid, 10 parts of high wear-resistant carbon black, 38 parts of N660 carbon black, 6 parts of white carbon black, coupling agent SI-75
0.8 part, 1.5 parts of sulphur, 2 parts of promotor, 2 parts of anti-aging agent, 0.5 part of antiscorching agent, 1.5 parts of dispersing agent, 3 parts of softening agent, flowable
2 parts of WS280,2 parts of anti-recovery agent WK901.
This formula is mainly characterized by using high-intensitive natural rubber, and the lower N660 carbon black of heat is more preferable using performance
Coupling agent SI-75, be added import anti-recovery agent WK901 and improve rubber mobility WS280 etc., this formulated rubber material
Intensity is high, and flexibility is good；Resistance to long-time vulcanizes, and molecule internal friction is small etc..
When mixer mixing, at first be added natural rubber be plasticized, then increase abrasion resistant carbon black, N660 carbon black, white carbon black,
Coupling agent SI-75, then plus liquid softener, add zinc oxide, stearic acid, anti-aging agent, dispersing agent, flowable WS280,
Anti-recovery agent WK901 etc. finally adds promotor, antiscorching agent etc., sulphur etc. in open mill.
Sizing material test: hardness shore A:58 ± 3；B, puller system is tested, tensile strength numberical range: >=21MPa；C, it uses
Puller system test, elongation at break numberical range: >=430%；D, it is tested using puller system, Shore A durometer, heat ageing numerical value
Range: firmness change (HS) 15%MAX, tensile strength change rate 20%MAX, elongation percentage change rate 20%MAX；E, using special folder
Tool, baking oven test, compression set numberical range: < 25%；F, using cryogenic box test black brittleness, show themselves in that temperature by
When being gradually reduced to -45 DEG C, rubber compound flawless；G, tested using ozone and aging resistance chamber, ozone resistance: 40 is Celsius
It spends, under the ozone partial pressure of 50mPa, exposure 72 hours, rubber compound flawless；H, it is tested using puller system, sulfurating strength numerical value model
It encloses: >=4Mpa
A kind of vulcanization preparation method of ship machinery highly elastic shaft coupling rubber, the steps include:
A. hot-air one step cure: each component of embodiment 2 being mixed, the film of 10mm thickness is pressed into, and is uniformly placed
In hot air case, kept for 75 minutes under the conditions of 75 DEG C；
B. pressurize post vulcanization: the sizing material after one step cure is pressed into sulfurizing mould, is 150 DEG C in mold temperature, die pressure
To be kept for 75 minutes under the conditions of 20MPa；
C. three sections of room temperature vulcanizations: the sizing material after post vulcanization is taken out, and is kept for 24 hours at room temperature.
Such as 2000 specification of HGT that we produce, 7. 0Kg of weight, one step cure is 75 DEG C * 75 and divides, the post vulcanization time
It is 75 points, equally shortens the time, and vulcanize using 800T bimodulus, it (is in the past 400T single mode sulphur that production efficiency, which improves 1 times,
Change), three sections of vulcanizations are kept for 24 hours at room temperature.
Embodiment 3: a kind of ship machinery highly elastic shaft coupling rubber of this example, composition and parts by weight are as follows: natural rubber
70 parts, 30 parts of ethylene propylene diene rubber, 5 parts of zinc oxide, 1.5 parts of stearic acid, 15 parts of high wear-resistant carbon black, 35 parts of N550 carbon black, hard charcoal
Black 8 parts, 0.8 part of liquid coupling agent SI-69,2 parts of vulcanizing agent, 1.5 parts of anti-aging agent, 1.5 parts of dispersing agent, 6 parts of softening agent, promote
2.5 parts of agent, 1.5 parts of vulcanizing agent.
This formula is mainly characterized by using high temperature resistant, ageing-resistant ethylene propylene diene rubber, scattered 1165MP white carbon black,
Using the liquid coupling agent easily dispersed, this formula is suitble to vulcanize for a long time, requirement product resistant to high temperature etc..
It is kneaded us and uses the big mixer of shearing, such carbon black, white carbon black-rubber aggregation agglomerate are in sufficiently large object
It is rubbed open under reason shearing or tensile force effect, agglomerate is gradually reduced, and is gradually mixed, until fully dispersed.Natural rubber is added at first
Glue and ethylene propylene diene rubber are plasticized, then increase abrasion resistant carbon black, N550 carbon black, white carbon black, liquid coupling agent SI-69, then plus
Then plus zinc oxide, stearic acid, anti-aging agent, dispersing agent etc. liquid softener finally adds promotor, vulcanizing agent etc. in open mill.
A kind of vulcanization preparation method of ship machinery highly elastic shaft coupling rubber, the steps include:
A. hot-air one step cure: each component of embodiment 3 being mixed, the film of 15mm thickness is pressed into, and is uniformly placed
In hot air case, kept for 80 minutes under the conditions of 80 DEG C；
B. pressurize post vulcanization: the sizing material after one step cure is pressed into sulfurizing mould, is 155 DEG C in mold temperature, die pressure
It is kept for 80 minutes under the conditions of 20MPa；
C. three sections of room temperature vulcanizations: the sizing material after post vulcanization is taken out, and is kept for 24 hours at room temperature.
The HGTQ1200 specification that we produce, weight 10.3Kg, one step cure divide for 80 DEG C * 80, the post vulcanization time
80 ', while shortening vulcanization time, improving production capacity, using 1200T large-tonnage injection sulfurization, the appearance of cissing is prevented, together
When use day this technology, accurately control production technology.
The above product all takes the vulcanization process for changing that molding is injection pressure, increases rubber mobility, and it is viscous to improve sizing material
With joint efforts；Glue injecting head increases that heating, mould increases mobile side board, upper mold changes flow path groove in mold, increases steam discharge slot etc. method
All it is innovative technology, significantly improves product quality.
Described is only specific embodiments of the present invention, but structure feature of the invention is not limited thereto, any this field
Technical staff within the field of the present invention, made changes or modifications all cover within the scope of the patent of the present invention.
Claims (5)
1. a kind of ship machinery highly elastic shaft coupling rubber, it is characterised in that the composition and parts by weight of the rubber are as follows: natural
90-110 parts of glue, 4-6 parts of zinc oxide, 0.5-2 parts of stearic acid, 10-35 parts of high wear-resistant carbon black, 20-45 parts of Universal carbon black, white carbon black
0-6 parts, 1-2 parts of sulphur, 1-2 parts of promotor, 2-4 parts of anti-aging agent, 0.1-1 parts of antiscorching agent, 0.5-2 parts of dispersing agent, softening agent 0-
10 parts.
2. a kind of ship machinery highly elastic shaft coupling rubber according to claim 1, it is characterised in that the promotor
For sulfenamide, thiazole compound.
3. a kind of ship machinery highly elastic shaft coupling rubber according to claim 1, it is characterised in that the anti-aging agent
For aldehyde amines.
4. a kind of ship machinery highly elastic shaft coupling rubber according to claim 1, it is characterised in that the softening agent
For fatty oil softener, petroleum line softener.
5. a kind of vulcanization preparation method of ship machinery highly elastic shaft coupling rubber, it is characterised in that the method includes:
A. hot-air one step cure: each component of claim 1 is mixed, is pressed into the film of 5-15mm thickness, uniformly
It is placed in hot air case, is kept for 30-80 minutes under the conditions of 60-70 DEG C；
B. pressurize post vulcanization: the sizing material after one step cure is pressed into sulfurizing mould, is 130-150 DEG C in mold temperature, die cavity
Interior pressure is kept for 30-200 minutes under the conditions of being 30-60MPa；
C. three sections of room temperature vulcanizations: the sizing material after post vulcanization is taken out, and is kept for 8-24 hours at room temperature.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110982133A (en) * | 2019-12-27 | 2020-04-10 | 苏州力达精密配件有限公司 | High-friction-coefficient rubber material and preparation method thereof |
| CN112745538A (en) * | 2021-01-15 | 2021-05-04 | 杭州前进联轴器有限公司 | Rubber formula and vulcanization preparation method of high-elasticity coupling |
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| CN104311902A (en) * | 2014-11-04 | 2015-01-28 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Precured buffer rubber for retreaded tire |
| CN105860156A (en) * | 2016-04-25 | 2016-08-17 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Pre-vulcanized tread rubber for retreaded tire and manufacturing process of pre-vulcanized tread rubber |
| CN106608987A (en) * | 2016-08-31 | 2017-05-03 | 保定威奕汽车有限公司 | Engine suspension rubber material and preparation method thereof |
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| CN104311902A (en) * | 2014-11-04 | 2015-01-28 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Precured buffer rubber for retreaded tire |
| CN105860156A (en) * | 2016-04-25 | 2016-08-17 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Pre-vulcanized tread rubber for retreaded tire and manufacturing process of pre-vulcanized tread rubber |
| CN106608987A (en) * | 2016-08-31 | 2017-05-03 | 保定威奕汽车有限公司 | Engine suspension rubber material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110982133A (en) * | 2019-12-27 | 2020-04-10 | 苏州力达精密配件有限公司 | High-friction-coefficient rubber material and preparation method thereof |
| CN112745538A (en) * | 2021-01-15 | 2021-05-04 | 杭州前进联轴器有限公司 | Rubber formula and vulcanization preparation method of high-elasticity coupling |
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