CN103042616A - Method for filling carbon black in rubber - Google Patents
Method for filling carbon black in rubber Download PDFInfo
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- CN103042616A CN103042616A CN2011103087304A CN201110308730A CN103042616A CN 103042616 A CN103042616 A CN 103042616A CN 2011103087304 A CN2011103087304 A CN 2011103087304A CN 201110308730 A CN201110308730 A CN 201110308730A CN 103042616 A CN103042616 A CN 103042616A
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Abstract
The invention relates to a method for filling carbon black in rubber. The method is composed of the following steps: a first step of preparing rubber raw materials; a second step of preparing compounding ingredients; a third step of plastifying; a fourth step of mixing; a fifth step of adding organosilicon; a sixth step of heat refining and calendaring; and a seventh step of vulcanizing. The provided method for filling carbon black in the rubber can reduce cost, improve usage performance of products and make the materials dispersed uniformly. The rubber products produced by the method have relatively strong wear resistance and relatively long service life, and have wide market prospects.
Description
Technical field
The method of a kind of compounding rubber that the present invention relates to relates in particular to a kind of method of rubber filling carbon black.
Background technology
Carbon black refers to formed fine particle behind the imperfect combustions such as coal, oil, biomass fuel.After carbon black enters atmosphere, can absorb sunshine, reduce the solar radiation that arrives ground.The black powder shape material that hydro carbons forms through gas phase imperfect combustion or pyrolysis under the process conditions of strict control.Its composition mainly is elemental carbon, and contains a small amount of oxygen, hydrogen and sulphur etc.The carbon black particle almost spherical, particle diameter is between between 10～500 μ m.The normal clinkering of many particles or be agglomerated into the dendritic or fibrous aggregation of three-dimensional key.In rubber processing, by making reinforcing agent (seeing reinforcing material) and filler in the mixing adding rubber.Carbon black is one of the most ancient industrial products.
Mainly as reinforcing agent and the filler of rubber, its consumption is about half of rubber-consumer amount to carbon black, and rubber accounts for 94% of carbon black total amount with carbon black, wherein approximately 60% is used for the tire manufacturing.In addition, also as the colouring agent of printing ink, coating and plastics and the ultravioletlight screening agent of plastic products.At many other goods, in electrode, dry cell, resistor, explosive, cosmetics and antiscuffing paste, it also is important auxiliary agent.Furnace black is mainly used in rubber, and the particle diameter of carbon black is thinner, and its reinforcing property is more superior; The carbon black degree of structuration is higher, and its stress at definite elongation and modulus are higher.The reinforcement kind of fine grain is mainly used in tire tread, gives tire good anti-wear performance.Other positions of tire, such as sidewall, casing ply, band bundle cushion and inner liner, require the warping strength be full of cracks of sizing material, anti-ozone oxidation, have good resilience and lower thermogenesis performance, generally select half reinforced type (specific area the is lower than 40m2/g) furnace black than the coarse grain footpath.Pigment is widely used in printing ink, coating and the plastics with channel black.Pigment channel black during printing ink, particularly news ink mainly use.In paint manufacturing process, high pigment channel black is given the fabulous blackness of battle wagon finish paint and gloss, and middle pigment channel black is used for general industry coating.In addition, middle pigment channel black also is commonly used for polyolefinic ultravioletlight screening agent, is used for improving the weatherability of plastic products.Rubber is mainly used in the particularly tread rubber of cross-country and engineering tyre of tire with channel black, and it gives the higher intensity of tyre surface and good anti-wear performance.The black rubber that is mainly used in of hot tearing.Poor because of the thick reinforcing property of particle diameter, only be used for requiring to fill to greatest extent the occasion of increment, as for the manufacture of rubber cushion, sebific duct, sponge product, sealing ring, tire liner, tyre bead glue and insulated product etc.
Rubber is divided into natural rubber and synthetic rubber by raw material.Be divided into block rubber, latex, liquid rubber and powdered rubber by form.Latex is the colloidal aqueous dispersion of rubber; Liquid rubber is the oligomer of rubber, is not generally the liquid of thickness before the sulfuration; Powdered rubber be latex is processed into Powdered, in order to the batching and processing and fabricating.The thermoplastic elastomer of the exploitation sixties in 20th century need not chemical cure, and adopts the processing method of thermoplastic to be shaped.Rubber is divided into again universal and extraordinary type two classes by using.
But rubber and goods thereof in storage and the use procedure, owing to the comprehensive function that is subjected to internal and external factor causes progressively degenerating of rubber physicochemical properties and mechanical performance, are lost use value in processing at last, and this variation is called ageing of rubber.Show as be full of cracks on the surface, be clamminess, harden, soften, efflorescence, variable color, mildew etc.Ageing of rubber factor have:
(1) oxygen: with rubber molecule generation free radical chain reaction, strand fracture or excessively crosslinked causes the change of rubber performance to oxygen in rubber.Oxidation is one of major reason of ageing of rubber.
(2) ozone: the chemism oxygen of ozone is much higher, and destructiveness is larger, and it is to make the strand fracture equally, but to the effect situation of rubber with rubber deformation whether and different ozone.When the rubber that acts on distortion (mainly being unsaturated rubber), so-called " ozone-induced cracking " crackle straight with the effect of stress direction appear, i.e.; When acting on the rubber of distortion, Surface Creation oxide-film and not chapping only.
(3) heat: improve thermal cracking or heat cross-linking that temperature can cause rubber.But basic role or the activation of heat.Improve the reaction of oxygen diffusion velocity and active oxidation, thereby accelerate rubber oxidation reaction speed, this is ubiquitous a kind of aging phenomenon--thermo-oxidative ageing.
(4) light: light wave is shorter, energy is larger.What rubber was played destruction is the higher ultraviolet ray of energy.Ultraviolet ray except can directly cause the rubber molecule chain break and crosslinked, rubber produces free radical because absorbing luminous energy, causes and the accelerated oxidation chain reaction process.Play a part heating through outer linear light.Another characteristics of its chief of light action (different from heat effect) are that it mainly advances life on the rubber surface.The sample that gum content is high, pattern cracking can appear in the two sides, i.e. so-called " the outer slabbing of light ".
(5) mechanical stress: under the mechanical stress repeated action, can make the rubber molecular chain fracture generate free an aromatic plant metioned in ancient books, the initiated oxidation chain reaction forms the power chemical process.Mechanical breaking strand and mechanical activation oxidizing process.How can preponderate, decide on its residing condition.In addition, under effect of stress, easily cause ozone-induced cracking.
(6) moisture: the effect of moisture has two aspects: rubber easily destroys when humid air is drenched with rain or be immersed in the water, and this is that the reasons such as hydrolysis or absorption cause because the compositions such as the water-soluble substances in the rubber and hydrophilic radical are dissolved by the water extracting.Particularly under the alternating action that water soaking and atmosphere expose to the open air, can accelerate the destruction of rubber.But moisture does not then play destruction to rubber under certain conditions, even the effect of delaying aging is arranged.
(7) if rubber at use procedure and oils medium Long Term Contact, oils can be penetrated into rubber inside makes it produce swelling, causes the intensity of rubber and other mechanical properties to reduce.Oils can make rubber generation swelling, is because behind the oils infiltration rubber, produced the counterdiffusion of molecule phase, and the network structure of vulcanizate is changed.
(8) other: the influencing factor of rubber is also had chemical mediator, variable valency metal ions, high-energy radiation, electricity and biological etc.
Therefore reduce the cost rubber, improve the rubber serviceability, make material dispersion even, increase the ageing resistance of rubber, wearability and prolong the rubber life-span is to be badly in need of in the industry the technical problem that solves.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method of rubber filling carbon black, and the method can reduce cost, improves the goods serviceability, make material dispersion even.
In order to solve the problems of the technologies described above, the technical scheme that the present invention takes is as follows:
A kind of method of rubber filling carbon black is characterized in that, described method is made of following steps:
The first step: rubber raw materials is prepared;
Second step: compounding ingredient is prepared;
The 3rd step: plasticate;
The 4th step: mixing;
The 5th step: add organosilicon
The 6th step: heat refining slice;
The 7th step: sulfuration.
Described robber materials is prepared to comprise rubber is carried out quality inspection, then carries out drying glue, cuts adhesive process; The temperature of described drying glue is 50 ℃～60 ℃, and the drying glue time is 24～48h in summer and autumn, be 36～72h in winter-spring season; Described robber materials is natural rubber or butadiene-styrene rubber.
Described compounding ingredient prepares to comprise the preparation with compounding ingredients such as softening agent, promoter, vulcanizing agents chosen of carbon black.
Described plasticating comprises:
Plasticate for one section: plasticate with the machine of beginning to pratise, the mill roll spacing is transferred to 0～1mm, sizing material is dropped into from large gear wheel end, broken material is plasticated, the sizing material rule; When glue-free on the roller, sizing material reverses 90 ° in will coiling, and again ploughs under roller, continues thin-pass, and thin-pass 4 times is repeatedly measured sizing material by the batching requirement at last, and broken into three Jiao Bao therewith; Then triangle bag and ormal weight carbon black are dropped into together the banbury 3～5min that together plasticates; After the banbury discharging, again drop into mill, and packing is deposited;
With two sections plasticate: plasticate to finish for one section and carry out two sections behind the 8h and plasticate, clot after same section of the two sections methods of plasticating, thin-pass 4 times, metering are deposited, and prepare mixing use.
Described mixingly in banbury, carry out: in the banbury hopper, add rubber, filler and various auxiliary agent, small powder, put down the top and fasten pressurization, blast 0.4～0.6MPa, mixing 2.5～3min; Material on the cleaning floating weight is mentioned the top and is fastened, and adds sulphur, mixing 30～40S; The banbury discharging.
Internal mixing discharge temperature≤110 ℃ add sulphur temperature≤90 ℃
Preferably, at described one or several that add following organo-silicon compound in the organosilicon step that add:
[R
1n-(RO)
3-nSi-(A
1)
m-(Ar)
p]
q[B] [I]
R
1n-(RO)
3-nSi-A
2 [II]
R
1n-(RO)
3-nSi-A3 [III]
B=-SCN in the formula ,-SH ,-CL ,-NH
2(q=1) or-SX (q=2)
R and R
1Can be identical or different, and represent C
1-4Alkyl or phenyl,
N=0,1 or 2,
A
1=dual functional straight or branched C
1-6Alkyl,
M=0 or 1,
Ar=C
6-12, C preferably
6Arlydene,
P=0 or 1, but P and n the two can not all be 0,
The numeral of q=2-8,
A
2The unsaturated C of the straight or branched of=simple function
1-20, C preferably
2-8Alkyl,
The unsaturated C of the straight or branched of A3=simple function
2-20, C preferably
2-8Alkyl.
Add organosilyl process and carry out in banbury, temperature is 250 ℃
Described heat refining slice is carried out in tri-roll press machine and mill: mill is preheating to temperature 50 C～70 ℃, undertaken by mixing order, and first mixing, rear heat refining, by mixing train number heat refining, make the gum stock quality evenly, temperature stabilization, after the sizing material heat refining is even, the clot blanking; Tri-roll press machine is reserved roll spacing, width by the slice requirement, reserve chill roll speed and three-roller coupling and cut-off knife severing length, the film that heat refining is good is thrown between three-roller central roll and top roll in order, the beginning rolling out film.
Described sulfuration is carried out in vulcanizer: will vulcanize template and be preheating to 150 ℃～157 ℃, and then open counterdie, middle mould, will roll film and ajust at middle mould, the middle mould matched moulds that moves upward will roll film again and ajust at counterdie, then pressurize, finishes vulcanisation step.
The invention provides a kind of method of rubber filling carbon black, the method can reduce cost, improves the goods serviceability, make material dispersion even, the rubber wearability of using the inventive method to produce is strong and service life is longer, has wide market prospects.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
The process chart of Fig. 1 rubber filling carbon black method
The specific embodiment
Embodiment:
1, raw material are prepared
Raw material standard, buying and storage plug goods primary raw material are natural rubber, butadiene-styrene rubber, carbon black and softening agent, promoter, vulcanizing agent etc.Its quality index meets country, promulgated by the ministries or commissions of the Central Government, industry standard, simultaneously also should be nontoxic, tasteless, human body is had no adverse reaction.Buy raw material need leave in by being up to the standards opacus, ventilate and dry storehouse in, in case make moist, go bad, lump.
2, plasticate
(1) preparation of plasticating
Natural rubber is plasticated and will be carried out drying glue as last, so that processing.General 50 ℃～60 ℃ of drying glue temperature, summer and autumn 24～48h, winter-spring season 36～72h notes, does not contact with thermal source during drying glue, avoids that sizing material is overheated to degenerate.Will be cut into corner block after the drying glue, dial and go external packing, and have impurity, mouldy blob of viscose to be selected to part, qualified glue is put on the shelf, must not land, in order to avoid pollute.
The checkout facility security situation comprises between roll spacing, roller and foreign matter in the banburying chamber; In winter, banbury, mill will be preheating to and require temperature to produce, in order to avoid temperature is crossed low damage equipment.The mill drier oil manually lubricates, and note refueling, and per tour will be refueled 2 times.
(2) plasticate
One section mill roll spacing of plasticating transfers to 0～1mm, and sizing material is dropped into from large gear wheel end, and broken material is plasticated, the sizing material rule; When glue-free on the roller, sizing material reverses 90 ° in will coiling, and again ploughs under roller, continues thin-pass, and thin-pass 4 times is repeatedly measured sizing material by the batching requirement at last, and broken into three Jiao Bao therewith.Then triangle bag and ormal weight carbon black are dropped into together the banbury 3～5min that together plasticates; After the banbury discharging, again drop into mill, and packing is deposited.
Can carry out two sections behind two sections one section 8h that plasticate that plasticates plasticates.The shortlyest carry out after will parking 4h.Clot after same section of the two sections methods of plasticating, thin-pass 4 times, metering are deposited, and prepare mixing use.
3, mixing
(1) batching
Prepare large, medium and small material by the prescription requirement, forbid privately to change; During batching, measurement instrument will be proofreaied and correct once after using 5～10 times continuously.
The batching measurement instrument
| Title | Measurement instrument | The weighing tolerance |
| Aniseed | The 50Kg platform scale | ±100g |
| Small powder | The 5Kg counter scale | ±5 |
Batching adopts the Primary batching system method, that is: with the same material in the several parts of material, once prepare, and then change and join another kind of material, carries out successively.Whether each batching finishes, and carry out self check to the several parts of batching kinds of joining together, have less and join, leak and join phenomenon.The small powders such as promoter, if any conglomeration, piece phenomenon, the processing of should smashing to pieces or sieve.Batching finishes, and feed basin is put neatly, carries out the batching record.
(2) mixing preparation
The checkout facility security situation comprises between roll spacing, roller and foreign matter in the banburying chamber, and voltage, blast are normal; In winter, banbury, mill will be preheating to and require temperature to produce, in order to avoid temperature is crossed low damage equipment.According to the production schedule, get sizing material, filler and the various auxiliary agent of appointment.
(3) mixing
In the banbury hopper, add rubber, filler and various auxiliary agent, small powder, put down the top and fasten pressurization, blast 0.4～0.6MPa, mixing 2.5～3min; Material on the cleaning floating weight is mentioned the top and is fastened, and adds sulphur, mixing 30～40S; The banbury discharging; Sizing material is put in the mill cooling of bag roller; Under roll spacing 1～2mm, with sizing material thin-pass 2 times, play simultaneously the triangle bag; Lower; Behind the sheet, need not cool off and send immediately the sheet operation, the heat refining slice under the compounding rubber.Treat the slice sizing material can not deposit too much, excessively of a specified duration, prevent the sizing material incipient scorch.The internal mixing discharge temperature must not be above 110 ℃; Add the sulphur temperature and must not surpass 90 ℃, in order to avoid the sulphur thawing disperses bad.
4, add organosilicon
Add organosilyl process and in banbury, carry out, guarantee that Processing Surrounding Temperature is 250 ℃.In adding the organosilicon step, add one or several of following organo-silicon compound:
[R
1n-(RO)
3-nSi-(A
1)
m-(Ar)
p]
q[B] [I]
R
1n-(RO)
3-nSi-A
2 [II]
R
1n-(RO)
3-nSi-A3 [III]
B=-SCN in the formula ,-SH ,-CL ,-NH
2(q=1) or-SX (q=2)
R and R
1Can be identical or different, and represent C
1-4Alkyl or phenyl,
N=0,1 or 2,
A
1=dual functional straight or branched C
1-6Alkyl,
M=0 or 1,
Ar=C
6-12, C preferably
6Arlydene,
P=0 or 1, but P and n the two can not all be 0,
The numeral of q=2-8,
A
2The unsaturated C of the straight or branched of=simple function
1-20, C preferably
2-8Alkyl,
The unsaturated C of the straight or branched of A3=simple function
2-20, C preferably
2-8Alkyl.
5, heat refining slice
(1) the heat refining slice is prepared
The checkout facility security situation comprises interior foreign matter between roll spacing, roller; Tri-roll press machine, mill will be preheating to and require 50 °～70 ℃ of temperature to produce, and film size to guarantee stable.
(2) slice
Behind the rubber compounding, throw into immediately the upper heat refining of heat refining mill XK-450; During the sizing material heat refining, one will be undertaken by mixing order, first mixing, and rear heat refining prevents that bin aging from crossing incipient scorch of a specified duration; Two will be by mixing train number heat refining, to guarantee that the gum stock quality is even, temperature stabilization.Reduce simultaneously the temperature fluctuation of per car gum stock as far as possible, film size to guarantee stable; After the sizing material heat refining was even, the clot blanking was to reduce temperature fluctuation; Tri-roll press machine is reserved roll spacing, width by the slice requirement, reserve chill roll speed and three-roller coupling and cut-off knife severing length; The film that heat refining is good is thrown between three-roller central roll and top roll in order, the beginning rolling out film; In the film calender line, often spot-check film calendering quality, comprise film length, width and quality, with the stable lower operation sulfuration quality of production; Environment temperature is during greater than 25 ℃, and the calendering film needs upper eight rollers cooling after water cooling, the wind, with reduction film storage temperature, prevents that film is because of the excess Temperature incipient scorch; Each supporting plate film calendering is complete, in time carry out sign and deposit.The calendering film resting period can not be long: be no more than 72 hours winter, be no more than 48 hours summer.
6, sulfuration
(1) sulfuration is prepared
Preheating: will vulcanize template and be preheating to set point of temperature (general 150 ℃～157 ℃ of natural gum), and generally also need stablizing about 20min, and make die plate temperature further even.
Get the calendering film that adapts by the sulfuration specification;
When driving vulcanizer first, manual unlocking counterdie, middle mould; To roll film and ajust at middle mould, by yellow start button, the middle mould matched moulds that moves upward; To roll again film and ajust at counterdie, press yellow start button, the equipment Self-pressurizing agri, finish vulcanisation step.
In the sulfidation, sulfuration finishes, and equipment is opened counterdie automatically, takes out sulfide film, and by yellow start button, middle mould is opened, and takes out sulfide film; Middle mould bleeds off pressure and prolongs film, presses yellow start button, and the middle mould matched moulds that moves upward will roll film again and ajust at counterdie, press yellow start button, and the equipment Self-pressurizing agri is finished sulfuration.In the sulfidation, should check the quality of the products at any time, and cut off the substandard products of open defect.Sulfuration finishes, be with the sulfide film trimmed.
The carbon rubber of making by above-mentioned technological process as required stamping-out becomes rubber miscellaneous.
Above embodiment purpose is to illustrate the present invention, and unrestricted protection scope of the present invention, all application that come by simple change of the present invention all drop in protection scope of the present invention.
Claims (10)
1. the method for a rubber filling carbon black is characterized in that, described method is made of following steps:
The first step: rubber raw materials is prepared;
Second step: compounding ingredient is prepared;
The 3rd step: plasticate;
The 4th step: mixing;
The 5th step: add organosilicon;
The 6th step: heat refining slice;
The 7th step: sulfuration.
2. the method for a kind of rubber filling carbon black according to claim 1 is characterized in that, described robber materials is prepared to comprise rubber is carried out quality inspection, then carries out drying glue, cuts adhesive process; The temperature of described drying glue is 50 ℃～60 ℃, and the drying glue time is 24～48h in summer and autumn, be 36～72h in winter-spring season; Described robber materials is natural rubber or butadiene-styrene rubber.
3. the method for a kind of rubber filling carbon black according to claim 1 is characterized in that, compounding ingredient prepares to comprise the outfit with compounding ingredients such as softening agent, promoter, vulcanizing agents chosen of carbon black.
4. the method for a kind of rubber filling carbon black according to claim 1 is characterized in that, described plasticating comprises:
Plasticate for one section: plasticate with the machine of beginning to pratise, the mill roll spacing is transferred to 0～1mm, sizing material is dropped into from large gear wheel end, broken material is plasticated, the sizing material rule; When glue-free on the roller, sizing material reverses 90 ° in will coiling, and again ploughs under roller, continues thin-pass, and thin-pass 4 times is repeatedly measured sizing material by the batching requirement at last, and broken into three Jiao Bao therewith; Then triangle bag and ormal weight carbon black are dropped into together the banbury 3～5min that together plasticates; After the banbury discharging, again drop into mill, and packing is deposited;
With two sections plasticate: plasticate to finish for one section and carry out two sections behind the 8h and plasticate, clot after same section of the two sections methods of plasticating, thin-pass 4 times, metering are deposited, and prepare mixing use.
5. the method for a kind of rubber filling carbon black according to claim 1, it is characterized in that described mixingly in banbury, carry out: in the banbury hopper, add rubber, filler and various auxiliary agent, small powder, put down the top and fasten pressurization, blast 0.4～0.6MPa, mixing 2.5～3min; Material on the cleaning floating weight is mentioned the top and is fastened, and adds sulphur, mixing 30～40S; The banbury discharging.
6. the method for a kind of rubber filling carbon black according to claim 5 is characterized in that, internal mixing discharge temperature≤110 ℃ add sulphur temperature≤90 ℃.
7. the method for a kind of rubber filling carbon black according to claim 1 is characterized in that, at described one or several that add following organo-silicon compound that add in the organosilicon step:
[R
1n-(RO)
3-nSi-(A
1)
m-(Ar)
p]
q[B] [I]
R
1n-(RO)
3-nSi-A
2 [II]
R
1n-(RO)
3-nSi-A3 [III]
B=-SCN in the formula ,-SH ,-CL ,-NH
2(q=1) or-SX (q=2)
R and R
1Can be identical or different, and represent C
1-4Alkyl or phenyl,
N=0,1 or 2,
A
1=dual functional straight or branched C
1-6Alkyl,
M=0 or 1,
Ar=C
6-12, C preferably
6Arlydene,
P=0 or 1, but P and n the two can not all be 0,
The numeral of q=2-8,
A
2The unsaturated C of the straight or branched of=simple function
1-20, C preferably
2-8Alkyl,
The unsaturated C of the straight or branched of A3=simple function
2-20, C preferably
2-8Alkyl.
8. the method for a kind of rubber filling carbon black according to claim 7 is characterized in that, adds organosilyl process and carries out in banbury, and temperature is 250 ℃.
9. the method for a kind of rubber filling carbon black according to claim 1, it is characterized in that, described heat refining slice is carried out in tri-roll press machine and mill: mill is preheating to temperature 50 C～70 ℃, undertaken by mixing order, first mixing, rear heat refining, by mixing train number heat refining, make the gum stock quality evenly, temperature stabilization, the sizing material heat refining evenly after, the clot blanking; Tri-roll press machine is reserved roll spacing, width by the slice requirement, reserve chill roll speed and three-roller coupling and cut-off knife severing length, the film that heat refining is good is thrown between three-roller central roll and top roll in order, the beginning rolling out film.
10. the method for a kind of rubber filling carbon black according to claim 1, it is characterized in that, described sulfuration is carried out in vulcanizer: will vulcanize template and be preheating to 150 ℃～157 ℃, then open counterdie, middle mould, to roll film ajusts at middle mould, the middle mould matched moulds that moves upward will roll film again and ajust at counterdie, then pressurize, finishes vulcanisation step.
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| CN2011103087304A CN103042616A (en) | 2011-10-13 | 2011-10-13 | Method for filling carbon black in rubber |
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|---|---|---|---|
| CN2011103087304A CN103042616A (en) | 2011-10-13 | 2011-10-13 | Method for filling carbon black in rubber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106566323A (en) * | 2016-10-21 | 2017-04-19 | 徐州工业职业技术学院 | Tire tread line-marking rubber slurry preparation method |
| CN117388099A (en) * | 2023-12-11 | 2024-01-12 | 常州市华伟医疗用品有限公司 | Drug resistance testing device of syringe piston head |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5494955A (en) * | 1994-04-08 | 1996-02-27 | Columbian Chemicals Company | Use of silane coupling agent with carbon black to enhance the balance of reinforcement properties of rubber compounds |
-
2011
- 2011-10-13 CN CN2011103087304A patent/CN103042616A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5494955A (en) * | 1994-04-08 | 1996-02-27 | Columbian Chemicals Company | Use of silane coupling agent with carbon black to enhance the balance of reinforcement properties of rubber compounds |
Non-Patent Citations (1)
| Title |
|---|
| 化学工业部人事教育司、化学工业部教育培训中心: "《橡胶加工基本工艺》", 31 July 1997, article "橡胶加工基本工艺" * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106566323A (en) * | 2016-10-21 | 2017-04-19 | 徐州工业职业技术学院 | Tire tread line-marking rubber slurry preparation method |
| CN106566323B (en) * | 2016-10-21 | 2018-10-30 | 徐州工业职业技术学院 | A kind of tire tread scribing line mucilage preparation method |
| CN117388099A (en) * | 2023-12-11 | 2024-01-12 | 常州市华伟医疗用品有限公司 | Drug resistance testing device of syringe piston head |
| CN117388099B (en) * | 2023-12-11 | 2024-02-13 | 常州市华伟医疗用品有限公司 | Drug resistance testing device of syringe piston head |
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Application publication date: 20130417 |