CN107825738A - Chopped carbon fiber enhancement engineering retreads tyre surface adhesive process - Google Patents
Chopped carbon fiber enhancement engineering retreads tyre surface adhesive process Download PDFInfo
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- CN107825738A CN107825738A CN201711118623.9A CN201711118623A CN107825738A CN 107825738 A CN107825738 A CN 107825738A CN 201711118623 A CN201711118623 A CN 201711118623A CN 107825738 A CN107825738 A CN 107825738A
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- carbon fiber
- rubber
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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
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/54—Retreading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
Chopped carbon fiber enhancement engineering retreads tyre surface adhesive process.Existing engineering machinery vehicle retreads often occur collapsing use up block, easily by puncture and abrasion it is fast the problems such as, cause the service life of engineering machinery retreads low.Chopped carbon fiber enhancement engineering retreads tyre surface adhesive process of the present invention is realized by following steps：Carbon fiber is impregnated with the toluene solution of 5% poly- methyl diphenylene diisocyanate, and 1min is dried under 200 °C, then carries out coating with 10% rubber paste, and 2min is dried under 160 °C；Raw rubber matrix is added into banbury the 4min that plasticates；Tread-rubber mixing process：Chopped carbon fiber is added on banbury and its compounding ingredient is kneaded；When the temperature after mixing process is down to about 60 °C, roll flakiness；Then vulcanize.The present invention can improve the adhesion strength of chopped carbon fiber and rubber matrix, extend retreads service life.
Description
Technical field：
The present invention relates to a kind of chopped carbon fiber enhancement engineering retreads tyre surface adhesive process.
Background technology：
Off-the-road tyre usually works in harsh environments, for example, Uneven road it is smooth and have sharp crushed stone, rock,
The debris such as nail and cullet, is impacted by hard thing during tire working big, and is often worked continuously round the clock.In addition, various works
Journey motor vehicles and machines are typically all open work, and winter or summer difference variation is big, and off-the-road tyre will bear wider temperature change
Scope, and exposed to the sun and rain by wind.These handling characteristics of off-the-road tyre, it is desirable to which tire tread glue sizing material need to have resistance to
Cutting, endurance, the premium properties such as wear-resistant, hardness is high, deformation is small, heat is low.In recent years, China's off-the-road tyre renovates
Industry development is extremely rapid, glue formula and selection raw material but domestic many off-the-road tyre renovation factory designs recap
When do not take into full account tire used place situation, such as be operated in the engineering machinery vehicle renovation wheel of balcony stone ore or iron ore
Tire, often occur collapsing in operation process use up block, easily by puncture and abrasion it is fast the problems such as, cause engineering machinery retreads
Service life is low, and the price of off-the-road tyre extends its life-span to engineering truck at thousands of or even tens of thousands of yuans
Economy has a direct impact.During off-the-road tyre use, anti-puncture performance, anti-collapse use up fast performance and anti-wear performance
Its critically important performance indications, thus in order to improve the resistance to puncture of engineering machinery retreads, wearability, it is anti-collapse use up block and
Improve service life, using chopped carbon fiber material as reinforcement, engineering machinery retreads tread-rubber material as matrix,
The carbon fiber of suitable length and appropriate number, research carbon fiber and rubber combination interface characteristic are added in retreads tread rubber
Mechanism, and by means such as performance tests, study the cut resistant of engineering machinery retreads tyre surface after fibre reinforced, anti-collapse flower
And the performance such as wear-resisting.
Carbon fiber has high ratio modulus, high specific strength, high temperature resistant, corrosion-resistant, resistance to tired as a kind of high performance fibre material
A series of excellent properties such as labor, radioresistance, conduction, heat transfer, damping, noise reduction, are occupied more in the reinforcement of advanced composite material
Come more important position, be described as 21 century most vital new material.In recent years, fibre reinforced high-performance rubber base
Composite is developed into one of study hotspot, is stated according to documents and materials, due to the introducing of carbon fiber, makes the resistance to of rubber
Hot, wearability, resilience, electric conductivity and other mechanical properties are all improved, fibre reinforced rubber composite
Performance is significantly better than rubber.Rubber is three big synthetic materials（Rubber, plastics and fiber）Middle cohesive energy is minimum, Young's modulus
Minimum macromolecular elastomer, its many performance can be improved by being kneaded with carbon black, fibre reinforced rubber composite, be rigid carbon
The complex of fiber-reinforced elastonieric rubber, can not only improve its mechanical property after fibre reinforced, and assign its conduction, lead
The characteristic such as hot and wear-resistant.During fibre reinforced rubber composite is prepared, it is most important the problem of be solve two-phase
Between bonding, the entirety for bearing external force can be formed, therefore during the compound tread-rubber of carbon fiber is prepared, carbon is fine
Dimension uniformly mixes with rubber, and two-phase tight bond is the technical problem firstly the need of breakthrough.
The content of the invention：
It is an object of the invention to provide a kind of chopped carbon fiber enhancement engineering retreads tyre surface adhesive process.
Above-mentioned purpose is realized by following technical scheme：
A kind of chopped carbon fiber enhancement engineering retreads tyre surface adhesive process, described renovation technology are realized by following steps：
Step 1: chopped carbon fiber is surface-treated；
Carbon fiber is impregnated with the toluene solution of 5% poly- methyl diphenylene diisocyanate, dries 1min under 200 °C, then with 10%
Rubber paste carry out coating, and under 160 °C dry 2min；Min represents chronomere, minute；
The process Step 2: tyre surface raw rubber is plasticated：
Raw rubber matrix is added into banbury the 4min that plasticates；Min represents chronomere, minute；
Step 3: tread-rubber mixing process：
At a temperature of 110 ± 1 DEG C, rotor speed is on 40r/min 6 cun of double roller banburies, after step 2 plasticates processing
Tread-rubber matrix in sequentially add rubber matrix, chopped carbon fiber, tackifier and compounding ingredient, operation oil and vulcanizing agent after
15min is kneaded, middle chopped carbon fiber to be mixed is homogeneously dispersed in tread-rubber matrix, obtains chopped carbon fiber and tyre surface rubber
The compound multiphase co-mixing system of glue；R represents revolution, and min represents chronomere, minute；
Step 4: the temperature of the chopped carbon fiber and the compound multiphase co-mixing system of tread-rubber after step 3 mixing process drops
During to about 60 °C, calendering formation；
Step 5: then bottom sheet vulcanizes 20min on 25t electrothermal plate vulcanizers；Wherein, curing temperature is 140 °C, vulcanization pressure
Power is 3.5MPa, and case depth reaches sulfurizing point for guarantee tyre surface middle part；T represents the unit of weight, ton；MPa represents pressure
Unit, MPa；Min represents the unit of time, minute；
Step 6: punching；
So far, the engineering retreads tread rubber process of chopped carbon fiber enhancing is completed, forms the engineering of chopped carbon fiber enhancing
Retreads tread rubber.
Beneficial effect：
Chopped carbon fiber of the present invention is impregnated with the toluene solution of 5% poly- methyl diphenylene diisocyanate, is dried under 200 °C
1min, then coating is carried out with 10% rubber paste, and 2min is dried under 160 °C.Compared with other binding systems, do not occur
Obvious yield point, bonding effect are best.Chopped carbon fiber is surface-treated by this, and increased according to chopped carbon fiber
The method that the characteristic of strong body and tread-rubber matrix designs suitable binding system, it is possible to increase chopped carbon fiber and rubber matrix
Adhesion strength, the reactivity on enhancing chopped carbon fiber surface and rubber matrix surface, change the thing on chopped carbon fiber surface
Physicochemical state, adjust the interface compatibility of composite.
Effective strengthening action can just be played to tread-rubber matrix by adding the carbon fiber of suitable length and proper content, be carried
The high tensile strength of material, tearing strength, hardness, modulus of elasticity and anti-wear performance, meanwhile, it also limit to a certain extent
The deformation of rubber matrix.High intensity, high-modulus, the carbon fiber of low elongation serve reinforcement really to the tread-rubber after vulcanization
Effect.This be due to distribution of the carbon fiber in rubber be in random phase lap knot state, this random distribution, phase lap knot
Carbon fiber skeleton is formed in rubber, the movement of its adjacent polymer chains is hindered, with carrying for carbon fiber length and content
Height, number of network nodes increase is taken between fiber, causes fiber to form network structure in rubber matrix.This network structure
In the presence of good inhibition is played in the movement to adjacent polymer chains.Carbon fiber is the material of a kind of high-modulus, low elongation
Material, when sample stress, the matrix mainly around carbon fiber is deformed, and two strain amplifications are produced at the both ends of carbon fiber
Region, i.e., cause area of stress concentration in carbon fiber end.When carbon fiber dosage is relatively low, this area of stress concentration density is relatively dredged,
Trigger the possibility destroyed small.When carbon fiber it is Nian Jie with matrix preferably without being subjected to displacement when, the carbon fiber of high intensity can be held
By certain load, the deformation of matrix is limited to a certain extent.Offset and be even more than when the synergy between carbon fiber
During the destructive power of area of stress concentration, the tensile strength and tearing strength of composite can be improved, and modulus of elasticity and hardness are then bright
Aobvious increase, elongation also decline therewith.Continue to increase with carbon fiber length and dosage, the area of stress concentration of carbon fiber end
Density, region property it is overlapping, thus, easily trigger at these positions and destroy, cause tensile strength to decline, but modulus of elasticity
It is then in rising trend all the time with hardness, and be multiplied.Although carbon fiber by broken in violent mixing, fiber shortens,
It is roughening, but metallographic microscope observation indicate that, carbon fiber substantially maintains the micro-phase action of fiber, therefore
The matrix effect of enhancing tread-rubber can be played.Achievement in research has carried out carbon in Harbin Hui Liang automobile tire retreadings Co., Ltd
The trial-production production of fiber reinforcement engineering machinery retreads, and used on the spot in mine region, through feedback, fibre reinforced
Its anti-collapses of engineering machinery retreads afterwards is used up block, resistance to puncture and the more common retreads of wearability and is significantly improved,
Retreads service life is greatly promoted.
Embodiment：
Embodiment one：
The chopped carbon fiber enhancement engineering retreads tyre surface adhesive process of present embodiment, described renovation technology pass through following step
It is rapid to realize：
Step 1: chopped carbon fiber is surface-treated；
Carbon fiber is impregnated with the toluene solution of 5% poly- methyl diphenylene diisocyanate, dries 1min under 200 °C, then with 10%
Rubber paste carry out coating, and under 160 °C dry 2min；Min represents chronomere, minute；
The process Step 2: tyre surface raw rubber is plasticated：
Raw rubber matrix is added into banbury the 4min that plasticates；Min represents chronomere, minute；
Step 3: tread-rubber mixing process：
At a temperature of 110 ± 1 DEG C, rotor speed is on 40r/min 6 cun of double roller banburies, after step 2 plasticates processing
Tread-rubber matrix in sequentially add rubber matrix, chopped carbon fiber, tackifier and compounding ingredient, operation oil and vulcanizing agent after
15min is kneaded, middle chopped carbon fiber to be mixed is homogeneously dispersed in tread-rubber matrix, obtains chopped carbon fiber and tyre surface rubber
The compound multiphase co-mixing system of glue；R represents revolution, and min represents chronomere, minute；
Step 4: the temperature of the chopped carbon fiber and the compound multiphase co-mixing system of tread-rubber after step 3 mixing process drops
During to about 60 °C, calendering formation；
Step 5: then bottom sheet vulcanizes 20min on 25t electrothermal plate vulcanizers；Wherein, curing temperature is 140 °C, vulcanization pressure
Power is 3.5MPa, and case depth reaches sulfurizing point for guarantee tyre surface middle part；T represents the unit of weight, ton；MPa represents pressure
Unit, MPa；Min represents the unit of time, minute；
Step 6: punching；
So far, the engineering retreads tread rubber process of chopped carbon fiber enhancing is completed, forms the engineering of chopped carbon fiber enhancing
Retreads tread rubber.
Embodiment two：
Unlike embodiment one, the chopped carbon fiber enhancement engineering retreads tread rubber work of present embodiment
Skill, described chopped carbon fiber are elected polyacrylonitrile-based carbon fibre as, PAN, produced by Shanghai Jiu Fu carbon fibre materials Co., Ltd,
Its a diameter of 7.05um, tensile strength 3.56GPa, tensile modulus of elasticity 231.4Gpa, extension at break 1.62%.
Embodiment three：
Unlike embodiment one or two, the chopped carbon fiber enhancement engineering retreads tread rubber of present embodiment
Technique, in the case that the mass fraction of chopped carbon fiber is 7%, tensile strength and tearing strength reach maximum.
Embodiment four：
Unlike embodiment three, the chopped carbon fiber enhancement engineering retreads tread rubber work of present embodiment
Skill, the length of described chopped carbon fiber is 6mm.
Embodiment five：
Unlike embodiment one, two or four, the chopped carbon fiber enhancement engineering retreads tire of present embodiment
Face adhesive process, rubber matrix, chopped carbon fiber, increasing are sequentially added in the tread-rubber matrix after processing of plasticating described in step 3
During 15min being kneaded after stick and compounding ingredient, operation oil and vulcanizing agent, described tread-rubber matrix tire tread glue
The styrene-butadiene rubber that the natural rubber material and mass parts for being 65 including mass parts are 35, and：
Reinforcing filler:On the basis of using carbon black N231, high-dispersity white carbon black is added, mass parts are respectively 40 and 10；
Accelerator:From the accelerator of the NS models of Wuhan Yuancheng Technology Development Co., Ltd.'s production, mass parts 1.6；
Vulcanizing agent:From the anti-recovery agent of the WK-901.6 models of Wuhan Jinghe Chemical Co., Ltd's production, mass parts are
1.5；
Age resistor:From the age resistor of the WH-02 models of the sensible Chemical Co., Ltd.'s production in Changchun, mass parts 2.0；This is anti-
Old agent is nontoxic, harmless, pollution-free；
Auxiliary agent:From the auxiliary agent of HNZ models, mass parts 1.6；Can improve sizing material determine to stretch, hardness, tear-resistant and wearability；
Stearic acid：Mass parts are 2.0；
Zinc oxide（ZnO）：Mass parts are 5.0；
X-140 model aromatic naphtha：Mass parts are 3.0；
Anti- ozone wax：Mass parts are 0.4；
The tackifier of C501 models：Mass parts are 2.
Claims (5)
1. a kind of chopped carbon fiber enhancement engineering retreads tyre surface adhesive process, it is characterized in that:Described renovation technology by with
Lower step is realized：
Step 1: chopped carbon fiber is surface-treated：
Carbon fiber is impregnated with the toluene solution of 5% poly- methyl diphenylene diisocyanate, dries 1min under 200 °C, then with 10%
Rubber paste carry out coating, and under 160 °C dry 2min；Min represents chronomere, minute；
The process Step 2: tyre surface raw rubber is plasticated：
Raw rubber matrix is added into banbury the 4min that plasticates；Min represents chronomere, minute；
Step 3: tread-rubber mixing process：
At a temperature of 110 ± 1 DEG C, rotor speed is on 40r/min 6 cun of double roller banburies, after step 2 plasticates processing
Tread-rubber matrix in sequentially add rubber matrix, chopped carbon fiber, tackifier and compounding ingredient, operation oil and vulcanizing agent after
15min is kneaded, middle chopped carbon fiber to be mixed is homogeneously dispersed in tread-rubber matrix, obtains chopped carbon fiber and tyre surface rubber
The compound multiphase co-mixing system of glue；R represents revolution, and min represents chronomere, minute；
Step 4: the temperature of the chopped carbon fiber and the compound multiphase co-mixing system of tread-rubber after step 3 mixing process drops
During to about 60 °C, calendering formation；
Step 5: then bottom sheet vulcanizes 20min on 25t electrothermal plate vulcanizers；Wherein, curing temperature is 140 °C, vulcanization pressure
Power is 3.5MPa, and case depth reaches sulfurizing point for guarantee tyre surface middle part；T represents the unit of weight, ton；MPa represents pressure
Unit, MPa；Min represents the unit of time, minute；
Step 6: punching；So far, the engineering retreads tread rubber process of chopped carbon fiber enhancing is completed, it is fine to form the carbon that is chopped
Tie up the engineering retreads tread rubber of enhancing.
2. chopped carbon fiber enhancement engineering retreads tyre surface adhesive process according to claim 1, it is characterized in that:Described
Chopped carbon fiber elects polyacrylonitrile-based carbon fibre, PAN, its a diameter of 7.05um, tensile strength 3.56GPa, tensile elastic as
Modulus is 231.4Gpa, extension at break 1.62%.
3. chopped carbon fiber enhancement engineering retreads tyre surface adhesive process according to claim 1 or 2, it is characterized in that:It is short
The mass fraction for cutting carbon fiber is 7%.
4. chopped carbon fiber enhancement engineering retreads tyre surface adhesive process according to claim 3, it is characterized in that:Described
The length of chopped carbon fiber is 6mm.
5. the chopped carbon fiber enhancement engineering retreads tyre surface adhesive process according to claim 1,2 or 4, it is characterized in that:
Rubber matrix, chopped carbon fiber, tackifier are sequentially added in the tread-rubber matrix after processing of plasticating described in step 3 and are matched somebody with somebody
During being kneaded 15min after mixture, operation oil and vulcanizing agent, described tread-rubber matrix tire tread glue includes quality
The styrene-butadiene rubber that part is 65 natural rubber material and mass parts are 35, and：
Reinforcing filler:On the basis of using carbon black N231, high-dispersity white carbon black is added, mass parts are respectively 40 and 10；
Accelerator:From the accelerator of NS models, mass parts 1.6；
Vulcanizing agent:From the anti-recovery agent of WK-901.6 models, mass parts 1.5；
Age resistor:From the age resistor of WH-02 models, mass parts 2.0；
Auxiliary agent:From the auxiliary agent of HNZ models, mass parts 1.6；
Stearic acid：Mass parts are 2.0；
Zinc oxide：Mass parts are 5.0；
X-140 model aromatic naphtha：Mass parts are 3.0；
Anti- ozone wax：Mass parts are 0.4；
The tackifier of C501 models：Mass parts are 2.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110229390A (en) * | 2019-07-30 | 2019-09-13 | 青岛科技大学 | A kind of natural rubber lagging material of modified chopped carbon fiber and preparation method thereof |
| CN110317374A (en) * | 2019-07-30 | 2019-10-11 | 青岛科技大学 | A kind of special vehicle solid wheel rubber material and preparation method thereof based on modified chopped carbon fiber |
| EP3822312A4 (en) * | 2018-07-13 | 2021-11-24 | Hangzhou Xinglu Technologies Co., Ltd. | Anti-aging polar rubber composition, processing method therefor and application thereof |
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