CN106863866A - A kind of preparation method of the outer silicon car sebific duct of interior fluorine - Google Patents
A kind of preparation method of the outer silicon car sebific duct of interior fluorine Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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Abstract
A kind of preparation method of the outer silicon car sebific duct of interior fluorine, belongs to Automobile Products manufacture technology field.The various materials wanted needed for various silicone rubber formulations are weighed according to the ratio of formula, silicon rubber in addition to vulcanizing agent and various dispensing used devices are kneaded, the silicon rubber that will be kneaded adds vulcanizing agent to be kneaded again after parking 24h, rolling out film after completing to knead again；The various materials wanted needed for various fluororubber formulas are weighed according to the ratio of formula, is kneaded on rubber mixing machine uniformly, it is standby；After two kinds of elastomeric compounds park 24h, rubber mixing machine mixing, uniform rear rolling out film are put into again；Take the mould of Related product；The product for completing shaping is put into vulcanizing tank carries out one step cure, and completing the outer membrane of dismantling of the demoulding after the step carries out post vulcanization, after completing whole shaping, carries out cleaning crop treatment, it is to be tested it is qualified after just can be with packaging and storage.
Description
Technical field
The present invention relates to a kind of preparation method of the outer silicon car sebific duct of interior fluorine, belong to Automobile Products manufacture technology field.
Background technology
With the progress and the development of the mankind of society, people are to energy demand and environmental requirement more and more higher.In automobile work
Industry aspect, in order to improve energy efficiency and automobile emissions standards, people constantly pursue new technology, wherein technology for Turbocharger Manufacturing
Application be development of automobile main trend.
Technology for Turbocharger Manufacturing is exactly, using exhaust-driven turbocharger compressed air, to improve air input of engine by air, is increased
Oxygenation content, makes fuel oil burn more fully, and turbocharging causes that air themperature rapidly rises, and maximum temperature is up to 230 DEG C of left sides
It is right.Simultaneously in order to effectively control discharge of automobile exhaust fumes, waste gas after gs-oil separator separation by still also having 20- in crankcase
50% oil gas returns gas handling system, so that containing substantial amounts of oil gas composition in automotive air intake and cooling system pipeline.
So require that turbocharger-intercooler rubber pipe has fabulous heat-resisting quantity, oil resistivity and oil-gas closed performance.Current state
Inherent turbocharging-charge air cooler air inlet/outlet rubber hose mainly uses ethylene-acrylate rubber (AEM), silicon rubber (VMQ), internal layer
It is the outer silicone tube of the common interior fluorine of fluorine silica gel (FVMQ) or silicon-fluorine polymer thing, these products all have resistance to elevated temperatures, oil resistivity
Energy, the oil-gas closed performance of high temperature resistant cannot meet one or more performance deficiency of use requirement.
Fluorubber grows up the need for nineteen fifty-seven is in order to meet aircraft industry to high-performance sealed requirement.From
Rise at that time, fluorubber is just readily applied to the others industrial circle such as auto industry, chemical industry.By more than 40 years answer
With, it was demonstrated that fluorubber has excellent performance at heat-resisting, corrosion-resistant aspect.The performance of fluorubber has close pass with its structure
System,
(1) fluorubber can work at high temperature, and the physical and mechanical properties for now providing is better than most of other elastomers.
The rising of temperature is also relatively smaller for the influence of fluorubber oil resistant, chemical resistance.Even if it is continuous at 204 DEG C or
The aging rear fluorubber in 260 DEG C of baking ovens of having a rest can also keep certain elasticity.Use condition under high temperature be usually 232 DEG C ×
3000h、260℃×100h、288℃×240h、316℃×48h。
(2) in a dynamic condition can as little as -18 to -23 DEG C using the general temperature of fluorubber.Proof fluorubber is tested
Close under conditions of absolute zero as static seal product to use when, its performance or gratifying, but for more
Strict use condition is really unappeasable.
(3) in the middle of all industrialized elastomers, the performance of fluorubber resistant to liquid and chemical mediator is than any non-fluorine bullet
Gonosome is all good, and it has excellent oil resistant, resistance to Aviation Fuel, resistance to lubricant, the ability of resistance to most of mineral oil.Fluorubber for
Most material all has very low permeability, also has outstanding performance in terms of low anti-oxidant vehicle fuel infiltration.Fat
Race and aromatic hydro carbons are the solvents of general elastomer, but rubber has good durability to them.
(4) even if under the high temperature conditions, rubber still has superior compression set performance.
(5) excellent resistance to air, light, the performance of deterioration by oxidation, good resistance to mould, resistance to fungi performance, in low pressure low frequency
It is lower when using with good electrical property, there is preferably intrinsic fire resistance than non-fluoroelastomer.
The development and increasingly harsher environmental requirement of auto industry, automobile engine using oil-containing in medium and environment and
The burning gases of containing alcohol enter whole engine system by crankcase bleed pipe.
Although engine generally takes Oil-gas Separation technology.Gs-oil separator isolation technics differs, and separating effect is too
It is different, wherein domestic gs-oil separator separating effect is preferably only capable of reaching 50%, external such as Bosch oil-producing gas separating device
Separating effect can reach 80%, i.e., still have 20%~50% oil-containing gases to be re-circulated into gas handling system, big to avoid
The direct discharge of part oil gas and pollute environment.
Due to still remaining oil gas quite a lot, it is necessary to by oil gas closed system, reduce the volatilization of oil gas, but it is former
The sebific duct for having automobile air inlet system do not have the performance of resistance to petro-gas permeation under high temperature, it is necessary to seek novel high-performance but cost compared with
The original AEM sebific ducts of low material substitution as gas handling system rubber components.
Elasticity, cold resistance for fluorubber is poor, is fluorubber FKM rubbers by the method being modified the shortcomings of expensive
The defect of colloidality energy can be made up.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention to provide a kind of preparation method of the outer silicon car sebific duct of interior fluorine.
A kind of preparation method of the outer silicon car sebific duct of interior fluorine, contains following steps；
Step 1, by the various materials wanted needed for various silicone rubber formulations according to formula ratio weigh, except sulphur
Silicon rubber and various dispensing used devices outside agent are kneaded, and the silicon rubber that will be kneaded adds vulcanizing agent after parking 24h
Kneaded again, rolling out film after completing to knead again；
Step 2, by the various materials wanted needed for various fluororubber formulas according to formula ratio weigh, in rubber mixing machine
Upper mixing is uniform, standby；
The various materials wanted needed for various AEM HT glue formulas are weighed according to the ratio of formula, is mixed on rubber mixing machine
Refining is uniform, standby；
After two kinds of elastomeric compounds park 24h, rubber mixing machine mixing, uniform rear rolling out film are put into again；
Step 3, the mould for taking Related product, after cleaning is carried out, the semi-finished product sheet material that will be cut out is according to task instruction
The requirement of book carries out shaping work；
Step 4, the product for completing shaping is put into vulcanizing tank carries out one step cure, the demoulding is dismantled after completing the step
Outer membrane carries out post vulcanization, after completing whole shaping, carries out cleaning crop treatment, it is to be tested it is qualified after can just be packaged into
Storehouse.
It is an advantage of the invention that：
1st, between internal layer fluorine glue and transition zone silica gel, bond properties is excellent：Normal temperature plunger bond strength >=1.5KN/m, it is resistance to
After heat ageing (200 DEG C × 336h), index of correlation will in plunger bond strength >=0.5KN/m, significantly larger than GMW15408 standards
Ask.
2nd, with excellent high and low temperature resistance, temperature in use scope can reach -60-+300 DEG C, outclass ethylene, propylene
- 30~+170 DEG C of the temperature in use scope of acid esters rubber (AEM).
3rd, with excellent oil resistance, its resistance to No. 3 standard oils (150 DEG C × 168h) cubical expansivity is only 2~3%,
The cubical expansivity for being much better than silicon rubber is more than 60% and the cubical expansivity of fluorosioloxane rubber is more than 20%.
4th, with excellent oil resistant permeability to gas energy, harsh experimental condition of the synthesis sebific duct in 200 DEG C × 168h
Under, 0W-30 oil volatilization permeability be only 10%~20%, and internal layer for fluorine silica gel silicone tube and pure silicon sebific duct in similarity condition
Under volatilization permeability reach 90%~100%.
5th, with excellent security performance, on the one hand the structure and technique of the invention product are the patch winding synthesis of multilayer bag,
The shotfiring safety of product can be to greatest extent improved, on the other hand due to the permeability resistance high of internal layer fluorine glue, oil is effectively prevented
The gas aging damage for causing swelling to gel permeation, so that the security performance and service life of product are greatly improved.
6th, the outer silicon synthesis sebific duct production technology of fluorine uses winding shaping process in this project intercooler for car, and common
Extruding-out process is compared, and required equipment, frock and mould are simple and easy to control, and production efficiency is high, product reliability is strong, tailing
It is recyclable, therefore production cost is relatively low.
Brief description of the drawings
When considered in conjunction with the accompanying drawings, by referring to following detailed description, can more completely more fully understand the present invention with
And the adjoint advantage of many of which is easily learnt, but accompanying drawing described herein is used for providing a further understanding of the present invention,
A part of the invention is constituted, schematic description and description of the invention is used to explain the present invention, does not constitute to this hair
Bright improper restriction, such as figure are wherein：
Fig. 1 is steps flow chart schematic diagram of the invention.
The present invention is further described with reference to the accompanying drawings and examples.
Specific embodiment
Obviously, those skilled in the art belong to guarantor of the invention based on many modifications and variations that spirit of the invention is done
Shield scope.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " " used herein, " one
It is individual ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that what is used in specification of the invention arranges
Diction " including " refer to the presence of the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
One or more other features, integer, step, operation, element, component and/or their group.It should be understood that when title element quilt
" connection " or during " coupled " to another element, it can be directly connected or coupled to other elements, or can also there is centre
Element.Additionally, " connection " used herein or " coupling " can include wireless connection or coupling.Wording used herein " and/
Or " include one or more associated any cells for listing item and all combine.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology) have with art of the present invention in those of ordinary skill general understanding identical meaning.Should also
Understand, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or excessively formal implication be explained.
For ease of the understanding to the embodiment of the present invention, done by taking several specific embodiments as an example further below in conjunction with accompanying drawing
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Embodiment 1：As shown in figure 1, a kind of preparation method of the outer silicon car sebific duct of interior fluorine, contains following steps；
Step 1, selection raw material step：
1st, silica gel mixing raw material：
Silicon rubber (the trade mark：G869), defrosting compound (F-10), particular adhesive (contain the alkoxy silane of amino and containing ethene
The oligomer of the alkoxy silane of base), iron oxide red (as physical heat absorbent), vulcanizing agent (DBPH), a small amount of meteorology white carbon；
2nd, lactoprene VAMAC mixings raw material：
Lactoprene VAMAC (HT), carbon black (N550), light MgO, releasing agent, titanium dioxide, Ca (OH)2, it is poly-
Ethylene waxes, stearic acid, odium stearate, potassium stearate, cytidine CTP；
3rd, fluorubber FKM mixings raw material：
Fluorubber FKM (9002), carbon black (N990), light MgO, stearic acid, vulcanizing agent (DBPH)；
4th, fluorubber FKM and lactoprene VAMAC Blend rubber materials：
Fluorubber FKM elastomeric compounds, lactoprene VAMAC elastomeric compounds；
Step 2, silica gel calendering process step are as follows:
Two-roll mill roller speed ratio is advisable for 1.2~1.4, and fast roller causes to knead faster in rear, higher fast ratio, low
Speed is more smooth than can then make film.
Roller must be connected with cooling water, melting temperature preferably below 40 DEG C, to prevent the volatilization loss of incipient scorch or vulcanizing agent.
Start roll spacing during mixing smaller (1~5mm), then progressively amplify.
Step 2.1, will once be added by the load weighted material of formula rate, charging and operation order：Rubber (bag roller) →
Defrosting compound → heat resistance accessory (colouring agent) → thin logical 5 times → blanking, back mixing → vulcanizing agent → thin logical → age overnight → back mixing →
Slice.
Step 2.2, after heat resistance accessory is added, add vulcanizing agent thin logical again, then age overnight back mixing parks a couple of days again
Back mixing goes out semi-finished product for standby.
Mixing time is 20~40 minutes (mill specification is φ 250mm × 620mm).
Step 3, lactoprene VAMAC HT, fluorubber FKM (9002) premixs and the two blending plus sulphur technique step
It is rapid as follows:
Mixing principle：Lactoprene VAMAC mixing cycles are relatively short, mixing lactoprene VAMAC
It is exactly to keep alap mixture temperature to extend mixing time that polymer has an important principle, because polyacrylic acid
Ester rubber VAMAC polymer contains a small amount of remaining methyl methacrylate monomer, so in storage, transport, mixing and processing
During should take good venting practice, to prevent workman to be exposed in methacrylate gas.
Step 3.1, lactoprene VAMAC HT pre-mixing process：
Lactoprene VAMAC HT mixings use one section of inverse method, prevent from overheating incipient scorch.Inverse method can be allowed
Filler and the auxiliary agent existing mixing under the mechanism of rotor, without causing temperature to rise.
Polymer is being eventually adding, and optimal melting effect is obtained to extend mixing time.
The present invention is using smoked sheet or NBR (nitrile rubber) cleaning banburies；(can not be in this step in one section of reverse mixing
Add vulcanizing agent)；Using slower rotor speed (15-20RPM)；With sufficient water, come cooling cavities and roller, (cooling water enters
Coolant-temperature gage is preferably below 20 DEG C)；In order to ensure effective plastic emitting, using using releasing agent；Using the load (body of banburying chamber 70%
Product)；It is 100 DEG C or lower to use the mixing plastic emitting temperature of lactoprene VAMAC HT.
Step 3.2, the pre- mixing steps of fluorubber FKM:
Fluorubber FKM rubber is plasticated on the rubber mixing machine it is thin it is logical after, add vulcanizing agent DBPH to be premixed, roller temperature can not
More than 60 DEG C, roll banding is prevented.Mixing to sizing material substantially for the moment, carry out it is thin it is logical treatment fully after slice, be placed on room
Under warm ventilation condition.It is cooled in the backward pre- elastomeric compound of room temperature after adding N990, magnesia, releasing agent uniform and parks at room temperature
24h, slice.
The blending step of step 3.3, fluorubber FKM premixing glues and lactoprene VAMAC premixing glues：
To knead one park complete two kinds of premix on the machine of beginning to pratise cross roller until two kinds of sizing materials be mixed thoroughly
Untill, now go out semi-finished product.
Notice that now mill cooling system will ensure cooling effectiveness, incipient scorch otherwise easily occur causes waste product to occur.
Step 4, charge air cooler air inlet/outlet rubber hose forming step are as follows:
The semi-finished product that step 4.1, the suitable mould of selection obtain step 1 or step 2 move towards one layer according to mould
One layer is manually wrapped on mould, and the material structure order of sebific duct is that the modified fluorubber of AEM (is close to mould as inner liner
Part), it is finally that another silica gel will be as outer layer, after the completion of shaping followed by the excessive layer of silica gel for contributing to bonding
Uniformly wrap up one layer of resistant to elevated temperatures diaphragm in unvulcanized product outside, it is ensured that vulcanized quality.
Step 4.2, unvulcanized product is put into vapours press cure tank carries out one section of first cure, this stage will protect
Card temperature can cause one step cure to fail more than 150 DEG C if there is the not enough situation of temperature, pressure.
After step 4.3, one step cure terminate, the appearance surface protective film of sebific duct is removed, carry out two sections of sulphur of higher temperature
Change, this stage essentially consists in the mechanical mechanics property of lifting sebific duct, such as tensile strength, low compression set etc..
Step 4.4, the treatment followed by product, the requirement according to drawing technological document is by initial Product processing
Product of the reason as drawing requirement, packaging of then testing.
Embodiment 2：
A kind of preparation method of the outer silicon car sebific duct of interior fluorine, a kind of turbocharger-charge air cooler air inlet/outlet rubber hose, liner material
Material replaces simple fluorubber FKM materials using AEM- fluorubber FKM blending modified materials, reaches improving performance, while reducing
The double requirements of cost.
AEM rubber and fluorubber FKM rubber are carried out blending and modifying by the present invention using the method by blending and modifying, are obtained
Obtain the new material of high-performance and low-cost.
The present invention realizes AEM, fluorubber FKM co-vulcanization, and reaches certain mechanical strength, weather resistance and possess good
Processing performance, and then make up and simple use AEM, the weak point of fluorubber FKM.
The present invention solves the adhesion problem of elastomeric compound inner liner and silastic-layer, and because the property at interface is different, the two glues
Closing needs special processing method and adhesive.
Raw material selection of the present invention：
1st, silica gel mixing raw material：
Silicon rubber (the trade mark：G869), defrosting compound (F-10), particular adhesive (contain the alkoxy silane of amino and containing ethene
The oligomer of the alkoxy silane of base), iron oxide red (as physical heat absorbent), vulcanizing agent (DBPH), a small amount of meteorology white carbon.
2nd, lactoprene VAMAC mixings raw material：
Lactoprene VAMAC (HT), carbon black (N550), light MgO, releasing agent, titanium dioxide, Ca (OH)2, it is poly-
Ethylene waxes, stearic acid, odium stearate, potassium stearate, cytidine CTP.
In the lactoprene VAMAC of the numerous trades mark of Du Pont, HT types are the kind for being resistant to higher temperature, whirlpool
The gas handling system for taking turns engine with supercharger charge air cooler is relative temperature part very high.
3rd, fluorubber FKM mixings raw material：
Fluorubber FKM (9002), carbon black (N990), light MgO, stearic acid, vulcanizing agent (DBPH).
4th, fluorubber FKM and lactoprene VAMAC Blend rubber materials：
Fluorubber FKM elastomeric compounds, lactoprene VAMAC elastomeric compounds.
Embodiment 3：As shown in figure 1,
A kind of preparation method of the outer silicon car sebific duct of interior fluorine, contains following steps；
Silica gel calendering process step is as follows:
Two-roll mill roller speed ratio is advisable for 1.2~1.4, and fast roller causes to knead faster in rear, higher fast ratio, low
Speed is more smooth than can then make film.
Roller must be connected with cooling water, melting temperature preferably below 40 DEG C, to prevent the volatilization loss of incipient scorch or vulcanizing agent.
Start roll spacing during mixing smaller (1~5mm), then progressively amplify.
Step 1, will once be added by the load weighted material of formula rate, charging and operation order：Rubber (bag roller) → remove
Creme → heat resistance accessory (colouring agent) → thin logical 5 times → blanking, back mixing → vulcanizing agent → thin logical → age overnight → back mixing → go out
Piece.
Step 2, after heat resistance accessory is added, add vulcanizing agent thin logical again, then age overnight back mixing is parked a couple of days and is returned again
Piece is produced to use.
Mixing time is 20~40 minutes (mill specification is φ 250mm × 620mm).
Filler should be slowly added to, be floated over the orbicule for preventing filler and rubber from being formed and cause on the top of spacer gel dispersion
It is uneven.If adding substantial amounts of filler, preferably at twice or three additions, and knife is drawn therebetween, it is ensured that good dispersion.
It was found that rubber has the trend of granulating, roll spacing can be tightened up to improve mixing.
Falling the micelle on receiver should be cleaned and be collected with brush, be returned immediately on the roller of rubber mixing machine, no
Then cause product appearance bad containing glue pimple in institute's refining glue material.
Because silicone rubber compounds are softer, can be operated with sub- knife is commonly assigned during mixing, when thin logical can not as General Purpose Rubber that
Sample is left behind thin slice, and is scraped using steel, nylon or wear-resistant plastic scraper.
For ease of clearing up and preventing lubricating oil from leaking into glue, sideboard should be used.
Gas-phase silica is easily flown upward, harmful, and gas-phase silica is mixed with liquid sulfur agent (DBPH), is stirred
Mixing uniformly turns into paste, conveniently takes, the gas-phase silica easily moisture absorption, once the moisture absorption can cause the product of shaping to occur being layered
The unacceptable defects such as bubble, so storage will pay special attention to hermetically drying problem when taking gas-phase silica.
Embodiment 4：As shown in figure 1,
A kind of preparation method of the outer silicon car sebific duct of interior fluorine, contains following steps；
Lactoprene VAMAC HT, fluorubber FKM (9002) are premixed and the two blending adds sulphur processing step as follows:
Mixing principle：Lactoprene VAMAC mixing cycles are relatively short, mixing lactoprene VAMAC
It is exactly to keep alap mixture temperature to extend mixing time that polymer has an important principle, because polyacrylic acid
Ester rubber VAMAC polymer contains a small amount of remaining methyl methacrylate monomer, so in storage, transport, mixing and processing
During should take good venting practice, to prevent workman to be exposed in methacrylate gas.
Step A, lactoprene VAMAC HT pre-mixing process：
Lactoprene VAMAC HT mixings use one section of inverse method, prevent from overheating incipient scorch.Inverse method can be allowed
Filler and the auxiliary agent existing mixing under the mechanism of rotor, without causing temperature to rise.
Polymer is being eventually adding, and optimal melting effect is obtained to extend mixing time.
The present invention is using smoked sheet or NBR (nitrile rubber) cleaning banburies；(can not be in this step in one section of reverse mixing
Add vulcanizing agent)；Using slower rotor speed (15-20RPM)；With sufficient water, come cooling cavities and roller, (cooling water enters
Coolant-temperature gage is preferably below 20 DEG C)；In order to ensure effective plastic emitting, using using releasing agent；Using the load (body of banburying chamber 70%
Product)；It is 100 DEG C or lower to use the mixing plastic emitting temperature of lactoprene VAMAC HT.
Specific banburying process see the table below：
The lactoprene VAMAC HT of table 1 knead detailed process
Step B, the pre- mixing steps of fluorubber FKM:
Fluorubber FKM rubber is plasticated on the rubber mixing machine it is thin it is logical after, add vulcanizing agent DBPH to be premixed, roller temperature can not
More than 60 DEG C, roll banding is prevented.Mixing to sizing material substantially for the moment, carry out it is thin it is logical treatment fully after slice, be placed on room
Under warm ventilation condition.It is cooled in the backward pre- elastomeric compound of room temperature after adding N990, magnesia, releasing agent uniform and parks at room temperature
24h, slice.
The blending step of step C, fluorubber FKM premixing glues and lactoprene VAMAC premixing glues：
To knead one park complete two kinds of premix on the machine of beginning to pratise cross roller until two kinds of sizing materials be mixed thoroughly
Untill, now slice.
Notice that now mill cooling system will ensure cooling effectiveness, incipient scorch otherwise easily occur causes waste product to occur.
Embodiment 5：A kind of preparation method of the outer silicon car sebific duct of interior fluorine, contains following steps；
According to the trend of mould be in layer manually wrapped on mould semi-finished product by step 1, the suitable mould of selection, glue
The material structure order of pipe is the modified fluorubber of AEM as inner liner (being close to the part of mould), followed by helping to glue
The excessive layer of silica gel of conjunction, be finally another silica gel as outer layer, uniformly to be wrapped outside unvulcanized product after the completion of shaping
Wrap up in one layer of resistant to elevated temperatures diaphragm, it is ensured that vulcanized quality.
Step 2, unvulcanized product is put into vapours press cure tank carries out one section of first cure, this stage will ensure
Temperature can cause one step cure to fail more than 150 DEG C if there is the not enough situation of temperature, pressure.
After step 3, one step cure terminate, the appearance surface protective film of sebific duct is removed, carries out the post vulcanization of higher temperature,
This stage essentially consists in the mechanical mechanics property of lifting sebific duct, such as tensile strength, low compression set etc..
Step 4, the treatment followed by product, the requirement according to drawing technological document process initial Product processing
Product as drawing requirement, packaging of then testing.
Embodiment 5：As shown in figure 1, a kind of preparation method of the outer silicon car sebific duct of interior fluorine, contains following steps；
Step 1, by the various materials wanted needed for various silicone rubber formulations according to formula ratio weigh, except sulphur
Silicon rubber and various dispensing used devices outside agent are kneaded, and the silicon rubber that will be kneaded adds vulcanizing agent after parking 24h
Kneaded again, rolling out film after completing to knead again.
Step 2, by the various materials wanted needed for various fluororubber formulas according to formula ratio weigh, in rubber mixing machine
Upper mixing is uniform, standby.
The various materials wanted needed for various AEM HT glue formulas are weighed according to the ratio of formula, is mixed on rubber mixing machine
Refining is uniform, standby.
After two kinds of elastomeric compounds park 24h, rubber mixing machine mixing, uniform rear rolling out film are put into again.
Step 3, the mould for taking Related product, after cleaning is carried out, the semi-finished product sheet material that will be cut out is according to task instruction
The requirement of book carries out shaping work.
Step 4, the product for completing shaping is put into vulcanizing tank carries out one step cure, the demoulding is dismantled after completing the step
Outer membrane carries out post vulcanization, after completing whole shaping, carries out cleaning crop treatment, it is to be tested it is qualified after can just be packaged into
Storehouse.
As described above, embodiments of the invention are explained, but as long as essentially without this hair of disengaging
Bright inventive point and effect can have many deformations, and this will be readily apparent to persons skilled in the art.Therefore, this
The variation of sample is also integrally incorporated within protection scope of the present invention.
Claims (2)
1. the preparation method of the outer silicon car sebific duct of a kind of interior fluorine, it is characterised in that contain following steps；
Step 1, by the various materials wanted needed for various silicone rubber formulations according to formula ratio weigh, except vulcanizing agent
Outer silicon rubber and various dispensing used devices is kneaded, and addition vulcanizing agent is carried out after the silicon rubber that will be kneaded parks 24h
Knead again, rolling out film after completing to knead again；
Step 2, by the various materials wanted needed for various fluororubber formulas according to formula ratio weigh, on rubber mixing machine mix
Refining is uniform, standby；
The various materials wanted needed for various AEM HT glue formulas are weighed according to the ratio of formula, is kneaded on rubber mixing machine equal
It is even, it is standby；
After two kinds of elastomeric compounds park 24h, rubber mixing machine mixing, uniform rear rolling out film are put into again；
Step 3, the mould for taking Related product, after cleaning is carried out, the semi-finished product sheet material that will be cut out is according to job instruction
It is required that carrying out shaping work；
Step 4, the product for completing shaping is put into vulcanizing tank carries out one step cure, complete the demoulding after the step and dismantle outer layer
Film carries out post vulcanization, after completing whole shaping, carries out cleaning crop treatment, it is to be tested it is qualified after just can be with packaging and storage
.
2. the preparation method of the outer silicon car sebific duct of a kind of interior fluorine according to claim 1, it is characterised in that also containing following
Step；
Step 1, selection raw material step：
1), silica gel mixing raw material：
Silicon rubber (the trade mark：G869), defrosting compound (F-10), particular adhesive (contain the alkoxy silane of amino and containing vinyl
The oligomer of alkoxy silane), iron oxide red (as physical heat absorbent), vulcanizing agent (DBPH), a small amount of meteorology white carbon；
2), lactoprene VAMAC mixings raw material：
Lactoprene VAMAC (HT), carbon black (N550), light MgO, releasing agent, titanium dioxide, Ca (OH)2, polyethylene
Wax, stearic acid, odium stearate, potassium stearate, cytidine CTP；
3), fluorubber FKM mixings raw material：
Fluorubber FKM (9002), carbon black (N990), light MgO, stearic acid, vulcanizing agent (DBPH)；
4), fluorubber FKM and lactoprene VAMAC Blend rubber materials：
Fluorubber FKM elastomeric compounds, lactoprene VAMAC elastomeric compounds；
Step 2, silica gel calendering process step are as follows:
Two-roll mill roller speed ratio is advisable for 1.2~1.4, and fast roller causes to knead faster in rear, higher fast ratio, low speed ratio
Can then make film smooth；
Roller must be connected with cooling water, melting temperature preferably below 40 DEG C, to prevent the volatilization loss of incipient scorch or vulcanizing agent；
Start roll spacing during mixing smaller (1~5mm), then progressively amplify；
Step 2.1, will once be added by the load weighted material of formula rate, charging and operation order：Rubber (bag roller) → defrosting
Agent → heat resistance accessory (colouring agent) → thin logical 5 times → blanking, back mixing → vulcanizing agent → thin logical → age overnight → back mixing → slice；
Step 2.2, after heat resistance accessory is added, add vulcanizing agent thin logical again, then age overnight back mixing parks a couple of days back mixing again
Go out semi-finished product for standby；
Mixing time is 20~40 minutes (mill specification is φ 250mm × 620mm)；
Step 3, lactoprene VAMAC HT, fluorubber FKM (9002) premixs and the two blending plus sulphur processing step are such as
Under:
Mixing principle：Lactoprene VAMAC mixing cycles are relatively short, the VAMAC polymerizations of mixing lactoprene
It is exactly to keep alap mixture temperature to extend mixing time that thing has an important principle, because polyacrylate rubber
Glue VAMAC polymer contains a small amount of remaining methyl methacrylate monomer, so in storage, transport, mixing and process
In should take good venting practice, to prevent workman to be exposed in methacrylate gas；
Step 3.1, lactoprene VAMAC HT pre-mixing process：
Lactoprene VAMAC HT mixings use one section of inverse method, prevent from overheating incipient scorch；Inverse method can allow filler
The existing mixing under the mechanism of rotor with auxiliary agent, without causing temperature to rise；
Polymer is being eventually adding, and optimal melting effect is obtained to extend mixing time；
Using smoked sheet or NBR (nitrile rubber) cleaning banburies；(vulcanization can not be in this step added in one section of reverse mixing
Agent)；Using slower rotor speed (15-20RPM)；With sufficient water, come cooling cavities and roller, (cold in-water temperature is most
Fortunately less than 20 DEG C)；In order to ensure effective plastic emitting, using using releasing agent；Using the load of banburying chamber 70% (volume)；Using
The mixing plastic emitting temperature of lactoprene VAMAC HT is 100 DEG C or lower；
Step 3.2, the pre- mixing steps of fluorubber FKM:
Fluorubber FKM rubber is plasticated on the rubber mixing machine it is thin it is logical after, add vulcanizing agent DBPH to be premixed, roller temperature is no more than
60 DEG C, prevent roll banding；Mixing to sizing material substantially for the moment, carry out it is thin it is logical treatment fully after slice, be placed on room temperature lead to
Under the conditions of wind；It is cooled in the backward pre- elastomeric compound of room temperature after adding N990, magnesia, releasing agent uniform and parks 24h at room temperature, goes out
Piece；
The blending step of step 3.3, fluorubber FKM premixing glues and lactoprene VAMAC premixing glues：
To knead one park complete two kinds of premix on the machine of beginning to pratise cross roller untill two kinds of sizing materials are mixed thoroughly,
Now go out semi-finished product；
Notice that now mill cooling system will ensure cooling effectiveness, incipient scorch otherwise easily occur causes waste product to occur；
Step 4, charge air cooler air inlet/outlet rubber hose forming step are as follows:
Step 4.1, select the semi-finished product that suitable mould obtains step 1 or step 2 according to mould trend in layer
It is manually wrapped on mould, the material structure order of sebific duct is that the modified fluorubber of AEM (is close to the portion of mould as inner liner
Point), followed by contribute to bonding the excessive layer of silica gel, be finally another silica gel as outer layer, will be not after the completion of shaping
Uniformly wrap up one layer of resistant to elevated temperatures diaphragm in the product outside of vulcanization, it is ensured that vulcanized quality；
Step 4.2, unvulcanized product is put into vapours press cure tank carries out one section of first cure, this stage will ensure temperature
Degree can cause one step cure to fail more than 150 DEG C if there is the not enough situation of temperature, pressure；
After step 4.3, one step cure terminate, the appearance surface protective film of sebific duct is removed, carry out the post vulcanization of higher temperature, this
Stage essentially consists in the mechanical mechanics property of lifting sebific duct, such as tensile strength, low compression set etc.；
Be processed into for initial Product processing by step 4.4, the treatment followed by product, the requirement according to drawing technological document
It is the product of drawing requirement, packaging of then testing.
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| WO2019036838A1 (en) * | 2017-08-21 | 2019-02-28 | 张进德 | Improved oil and gas delivery pipe |
| CN113134287A (en) * | 2020-01-17 | 2021-07-20 | 惠州市沃瑞科技有限公司 | Waterproof dustproof humidifying valve subassembly with electronic components seal shell |
| CN113692351A (en) * | 2019-04-04 | 2021-11-23 | Ａｇｃ株式会社 | Method for producing laminate, and laminate |
| CN114193646A (en) * | 2021-12-08 | 2022-03-18 | 连云港晶明硅胶制品有限公司 | Low-heat-loss silica gel product vulcanization process |
| CN115141442A (en) * | 2020-03-17 | 2022-10-04 | 戚佳轩 | Fluororubber composition, rubber product and preparation method thereof |
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| CN115141442B (en) * | 2020-03-17 | 2024-02-06 | 戚佳轩 | Fluororubber composition, rubber product and preparation method thereof |
| CN114193646A (en) * | 2021-12-08 | 2022-03-18 | 连云港晶明硅胶制品有限公司 | Low-heat-loss silica gel product vulcanization process |
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