CN107379333A - A kind of fine rubber powder, preparation method thereof - Google Patents
A kind of fine rubber powder, preparation method thereof Download PDFInfo
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- CN107379333A CN107379333A CN201710645147.XA CN201710645147A CN107379333A CN 107379333 A CN107379333 A CN 107379333A CN 201710645147 A CN201710645147 A CN 201710645147A CN 107379333 A CN107379333 A CN 107379333A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0404—Disintegrating plastics, e.g. by milling to powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/12—Shape or construction of discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/10—Liquid materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/042—Mixing disintegrated particles or powders with other materials, e.g. with virgin materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/0484—Grinding tools, roller mills or disc mills
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention provides a kind of fine rubber powder, preparation method thereof, including：Feedstock treating, grind material mixing, grind, wet sieving, dehydration, the steps such as dry and dry sieving and packing, this fine rubber powder, preparation method thereof is circulated in the streamline of closing after the coarse granule block rubber of precrushing is sufficiently mixed with water and ground, and realize the automatic drying of rubber powder, screening and packaging, automaticity is high, cost is low, and it can contamination-freely prepare the fine rubber powder of ultra-fine grain, combined with virgin rubber substrate surface by fine rubber powder made from this preparation method and inlayed in indenting shape, netted contact area is considerably increased in space three-dimensional direction, the combination of rubber powder and virgin rubber can significantly improve, greatly enhance the bond strength of colloid, toughness and wearability.
Description
Technical field
The present invention relates to rubber powder production technical field, and in particular to a kind of fine rubber powder, preparation method thereof.
Background technology
China's rubber reconstituted circularly technology rests essentially within the reclaimed rubber stage at present, and reclaimed rubber technology is washed in a pan already abroad
Eliminate, and generally to produce based on rubber powder.Rubber powder produces the developing direction that represent world's rubber reconstituted circularly technology, at present
Through the common recognition for being world rubber industry.Smaller then its specific surface area of particle of rubber powder is bigger, physics and chemistry during recycling
Characteristic is better.The fine rubber powder for preparing high quality is global problem with low-cost high-efficiency.
Two kinds of reparation technologies of dry method and freezing are taken in rubber powder production at present substantially.Fast pulley can be with during dry production rubber powder
Effectively cooling, but runner and material radiating effect be not good enough, and rubber powder is easy to aging；Freezing produces rubber powder generally use liquid nitrogen frozen work
Skill, rubber is refrigerated at a temperature of glassy state and crushed.This mode consumes energy greatly, and cost is high.The rubber powder shape of both technique productions
Shape cuts that type is plane, and surface is smoother in knife, small with virgin rubber adhesion, easily produces sliding, when being added to virgin rubber its production into
The properties of product can be less than virgin rubber, only play full filler effect, and resistance to compression, tension and antitorque sky can not be bonded with virgin rubber
Between network structure, cause wear-resisting, tensile strength, tearing strength decline.Up to the present, the glue that most advanced country produces in the world
Powder recycles field to be all difficult to exceed former rubber product performance in rubber.Dry method and cooling method production rubber powder simultaneously, although overcoming
Chemical contamination caused by desulfurization reduction, but because noise, airborne dust, waste gas discharge etc. also bring certain secondary pollution.
The domestic preparation method to rubber powder has also carried out a series of research at present, such as Publication No. CN104002396A
Chinese patent application disclose a kind of preparation method of reclaimed rubber rubber powder, its essence is made from junked tire using dry method
Standby rubber powder, by pulverizer by after rubber coarse crushing, after scrap iron removing between be ground into the rubber powder of 30-32 mesh, though dry process
So quick and energy consumption is low, but high temperature and peculiar smell can be produced in crushing process, and can destroy rubber point under the high temperature conditions
Minor structure and the performance for reducing rubber powder, in today that environmental protection requirement is increasingly stricter, are gradually eliminated.
Prepared by wet method is to be sufficiently mixed the thin block of rubber with water to be ground again, and wet method is prepared to eliminate in crushing process and produced
Raw high temperature and peculiar smell, is reduced to rubber molecule structural damage.But rubber powder prepared by wet method needs drying after grinding,
Especially traditional wet grinding, due to being directly ground after taking rubber powder to be simply mixed with water, grind the wet rubber of generation
The mass dryness fraction of rubber powder is generally 10%-20%, and adding substantial amounts of dry for follow-up drying bears, and factually border production leadtime, raw
Producing rubber powder per ton needs to consume the kilowatt hour of electric energy 100,80 cubic metres of natural gas, and energy consumption is very high, is counted according to another actual production, such as
The relative humidity of the wet rubber powder of fruit often rises 1%, and follow-up drying cost needs increase by 5%, but rubber powder is in process of lapping
Middle water can not add very few, and in actual production, wet method prepares the weight ratio generally 1 of the wet rubber powder and water of rubber powder:5 is left
The right side, otherwise do not reach and eliminate caused high temperature and peculiar smell in crushing process, reduce the effect destroyed to rubber molecule structure.
The content of the invention
In view of the shortcomings of the prior art, will be pre- the invention provides a kind of fine rubber powder, preparation method thereof, this preparation method
Broken coarse granule block rubber is circulated in the streamline of closing after being sufficiently mixed with water and ground, and realizes the automatic dry of rubber powder
Dry, screening and packaging, automaticity is high, cost is low, and can contamination-freely prepare the fine rubber powder of ultra-fine grain, passes through this
Fine rubber powder made from preparation method is combined with virgin rubber substrate surface to be inlayed in indenting shape, in space three-dimensional direction significantly
Add netted contact area, the combination of rubber powder and virgin rubber can significantly improve, greatly enhance bond strength, the toughness of colloid with
And wearability.
To realize above-mentioned technical proposal, the invention provides a kind of fine rubber powder, preparation method thereof, following step is specifically included
Suddenly：
S1, Feedstock treating,
Rubber powder first by junked tire by crusher in crushing into 10-20 mesh, the rubber powder after then crushing are deposited
Storage quantifies glassware in raw material storage tanks, in the discharging opening installation of raw material storage tanks, ensures lasting feed, and in quantitative discharging
Strong magnetic magnetic separator de-ironing is installed at device rear, removes the iron filings impurity in rubber powder；
S2, material mixing is ground,
Using feeding screw by the rubber powder feedstock transportation after removing scrap iron removing impurity into pigment blending tank, and to
Be continually fed into pigment blending tank and grind liquid, it is described grind liquid by water that parts by weight are 98 parts, 0.3 part of defoamer, 0.6 part
Activating agent, 0.2 part of cleaning agent, 0.5 part of softening agent, 0.4 part of plasticizer mix, and rubber powder raw material and grind liquid and exist
Persistently stirred by mixer in pigment blending tank, make raw material and grind the abrasive material that liquid is thoroughly mixed to form even concentration；
S3, grind,
Abrasive material is extracted from pigment blending tank, being pumped to grinder by pipeline is refined, and the concentration for controlling abrasive material is
18%-22%, wherein, the abrasive sheet of multilayer multi-disc is equipped with grinder, makes the rubber powder granular size in abrasive material by 10-20
Mesh is levigate to more than 60 mesh；
S4, wet sieving,
Screening machine is pumped to by the abrasive material of grinding, is sifted out qualified rubber powder using the screen cloth of 60 mesh, and will not
Qualified rubber powder is pumped in pigment blending tank again by delivery pump to carry out circulation and grinds；
S5, dehydration,
Qualified rubber powder by delivery pump is pumped to centrifuge after sifting out, and carrying out predrainage by centrifuge forms wet glue
Powder, the wet rubber powder Jing Guo predrainage is then delivered to filter press, by the residue inside wet rubber powder by way of volume compression
Moisture oppresses out by force, and the mass dryness fraction for controlling wet rubber powder to export out from filter press is 60%-70%；
S6, drying,
Wet rubber powder by dehydration is delivered in the rotary drying stove being dried using solar energy and is dried, is controlled
Drying temperature is maintained between 160-200 degrees Celsius in rotary drying stove processed, and the mass dryness fraction of coming out of the stove for controlling rubber powder is 94%-96%
Between；
S7, dry sieving and packing,
Be delivered to by dried rubber powder by way of pipeline wind is sent in powder sieving machine, powder sieving machine with it is more
The baling press connection of the individual different meshes being arranged side by side, powder sieving machine are directly entered phase after screening out the rubber powder of different meshes
Answer in the baling press of mesh number and packed.
Preferably, specifically following steps are taken to be dried in the step S6：
S61, solar energy heating Medium Oil；The Medium Oil being stored in medium storage tank is conveyed by circulating pump via medium
In pipeline to pressure-bearing type sealing solar heat-collection plate, pressure-bearing type sealing solar heat-collection plate absorbs solar energy and quickly heats Jie
Matter oil, the temperature for controlling Medium Oil to heat is 350-380 degrees Celsius, is then sent to media heat exchanger, after heat exchange, medium
Oil is reentered in medium storage tank and circulated；
S62, heat exchange type into heating hot blast；Under the driving of air blower, the Cryogenic air of external environment is returned by used heat
Receive heat exchanger to enter rotary drying stove and absorb the heat for the damp-heat air for giving off drier, lift Cryogenic air temperature
And humidity is reduced, then warm air passes through media heat exchanger again, because Medium Oil flows through media heat exchanger, warm air simultaneously
The heat of absorbing medium oil is rapidly heated, and forms the hot blast of high temperature drying and is sent into rotary drying stove, the temperature for controlling hot blast is
150-170 degrees Celsius；
S63, wet rubber powder rotary drying；Helical baffle, the fine wet rubber as made from step S5 are set in rotary drying stove
Rubber powder enters rotary drying stove from entrance, moistening rubber powder is rolled wherein in body of heater rotary course, makes rubber powder fluffy
And fully contacted with hot blast so as to evaporate moisture, and helical baffle can promote rubber powder to be shifted from entrance to outlet, work as rubber
Fully dry when powder reaches outlet and discharged from outlet；
S64, Waste Heat Recovery；The dry-heat air for absorbing moisture forms damp-heat air from waste heat recovery heat exchanger discharge revolution
For drying oven so as to reclaim used heat, the heat of waste heat recovery heat exchanger recovery is used for the Cryogenic air of circulating-heating external environment.
Preferably, the Medium Oil is blending agent oil, by 65 parts of hydrogenation tail oil, 33 parts of double benzyl toluene type media
Oil, 0.5 part of anti-coking agent, 0.8 part of stabilizer, 0.3 part of antioxidant mix, and described part is parts by weight.
Preferably, the anti-coking agent is polymerase chain alkenyl succinimide carboxylate, by the limited public affairs of Hubei conscience environmental protection science and technology
Department provides；The stabilizer is by diglycidyl ether and thylhexoic acid barium with 1:1 mass ratio composition；The antioxidant is by three
Cerium chloride, terephthalic acid (TPA) and sodium pyrosulfite are with 1:2:1 mass ratio composition.
Preferably, it is 360-370 degrees Celsius to control Medium Oil to enter the temperature that media heat exchanger is exchanged heat, control heat exchange
The temperature of high temperature drying hot blast is 160 degrees Celsius afterwards, and it is 20- that helical baffle, which promotes the time of wet rubber powder from the inlet to the outlet,
30min。
Preferably, the defoamer is polypropylene glycerol aether, and the activating agent is polyacrylic acid, and the softening agent is certain herbaceous plants with big flowers
Adipate, the plasticizer are dioctyl phthalate, and the cleaning agent is Shanghai Jing Bi daily use chemicals Science and Technology Ltd.
028 type cleaning agent of production.
Preferably, mixed proportion of the continuous measurement raw material with grinding liquid is installed in the step S2 in pigment blending tank
Concentration monitoring device, the magnitude of recruitment of liquid is ground by control and maintains the concentration of abrasive material between 18%-22%.
Preferably, in the step S3, the abrasive sheet of 3 layers 3 is equipped with grinder, one of them grinds for Moving plate
Piece, two other is price fixing abrasive sheet, and the gap between neighboring abrasive piece is maintained at 1-5 microns.
Preferably, the Moving plate abrasive sheet and price fixing abrasive sheet are the sintering ceramics of loose structure, and the Moving plate is ground
Piece includes fracture area, corase grind area and fine grinding area, being provided with the fracture area, corase grind area and fine grinding area close from inside to outside successively
The roll flute increased successively is spent, the roll flute of even density is provided with the price fixing abrasive sheet, the roll flute is with price fixing abrasive sheet
Offset centered on centre point and to the left or to the right 0.5 degree of circumferentially array distribution.
The beneficial effect of a kind of fine rubber powder, preparation method thereof and device provided by the invention is：
(1) this fine rubber powder, preparation method thereof expects the whole processing process of product all in closed-loop from former material
Border, it can be pumped because raw material mixes with water using pipeline, so workshop flexible layout, occupied ground is few, production
Noise is largely only absorbed by the water and is limited in inside pipeline, and noise pollution is minimum, and whole processing link is substantially without airborne dust without having
Poison discharge, to the complete close friend of environment；
(2) this fine rubber powder, preparation method thereof rubber grind during add by parts by weight be 98 parts water, 0.3 part
Defoamer, the mill that mixes of 0.6 part of activating agent, 0.2 part of cleaning agent, 0.5 part of softening agent, 0.4 part of plasticizer
Liquid processed is ground, and can strengthen the effect that rubber powder is ground, and obtained fine rubber powder is ground after originally grinding liquid processing
Rough surface, rubber powder is combined with virgin rubber substrate surface to be inlayed in indenting shape, is considerably increased in space three-dimensional direction netted
Contact area, the combination of rubber powder and virgin rubber can significantly improve, and greatly enhance the bond strength, toughness and wearability of colloid
Deng indices can reach the characteristic of virgin rubber, and partial properties are higher than virgin rubber；
(3) temperature of dry-heat air can be reduced to 150-170 degrees Celsius by this fine rubber powder, preparation method thereof, and will
Drying time shorten to 20-30min, at the same avoid drying temperature it is too high and cause rubber powder produce contain sulphur pollution, it is pollution-free
Discharge, it also avoid the structure that high temperature drying destroys rubber molecule；
(4) this fine rubber powder, preparation method thereof takes solar energy drying, relative to traditional hot blast flash evaporation furnace drying mode,
Energy consumption is greatly reduced, traditional hot blast flash evaporation furnace dries finished product per ton and consumes the kilowatt hour of electric energy 100,80 cubes of natural gas
Rice, and use the drying means of the present invention to dry finished product per ton and only consume the kilowatt hour of electric energy 70；
(5) this fine rubber powder, preparation method thereof is situated between using a kind of independently developed low heat capacity ratio, high boiling special mixing
Matter oil, it is ensured that Medium Oil is heated to heat endurance at 350-380 degrees Celsius, and will not produce aldehydes matter, and
The heat energy of solar energy conversion can be quickly absorbed, programming rate is fast, can effectively strengthen drying efficiency.
Brief description of the drawings
Fig. 1 is the process flow diagram of the present invention.
Fig. 2 is the scanning electron microscope (SEM) photograph of dry process rubber powder.
Fig. 3 is the scanning electron microscope (SEM) photograph for grinding products obtained therefrom in the present invention using water to grind liquid.
Fig. 4 is the scanning electron microscope (SEM) photograph for grinding liquid and grinding products obtained therefrom to be configured in the present invention.
Fig. 5 is the scanning electron microscope (SEM) photograph using the common product for grinding gained.
Fig. 6 is the scheme of installation of Moving plate abrasive sheet and price fixing abrasive sheet in embodiment.
Fig. 7 is the structural representation of Moving plate abrasive sheet in embodiment.
Fig. 8 is the structural representation of price fixing abrasive sheet in embodiment.
Fig. 9 is the examining report of product in embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Ability
The every other embodiment that domain ordinary person is obtained under the premise of creative work is not made, belong to the protection of the present invention
Scope.
Embodiment：A kind of fine rubber powder, preparation method thereof.
Referring to figs. 1 to shown in Fig. 4, a kind of fine rubber powder, preparation method thereof, specifically comprise the following steps：
S1, Feedstock treating,
Rubber powder first by junked tire by crusher in crushing into 10-20 mesh, because disintegrating machine is broken by dry method
It is broken, therefore its broken limit namely 20 mesh, if grinding will carefully break meeting rubber structure again, pass through crusher in crushing
The overwhelming majority is more coarse grained rubber powder in rubber powder of waste tire, wherein can also contain a small amount of iron filings, fine sand, textile fabric
Deng impurity, the rubber powder after broken is delivered in raw material storage tanks by conveyer, to meet the continuous feeding of production line
Demand, the installation of holding vessel discharging opening quantify glassware, with the load and production line finished product in adjuster control raw material storage tanks
Yield is consistent, and installs strong magnetic magnetic separator de-ironing quantifying glassware rear, removes the iron filings impurity in rubber powder, and fine sand, spinning
The impurity such as textured fiber remove in subsequent operation；
S2, material mixing is ground,
Using feeding screw by the rubber powder feedstock transportation after removing scrap iron removing impurity into pigment blending tank, and to
Be continually fed into pigment blending tank and grind liquid, it is described grind liquid by water that parts by weight are 98 parts, 0.3 part of defoamer, 0.6 part
Activating agent, 0.2 part of cleaning agent, 0.5 part of softening agent, 0.4 part of plasticizer mix, and rubber powder raw material and grind liquid and exist
Persistently stirred by mixer in pigment blending tank, make raw material and grind the abrasive material that liquid is thoroughly mixed to form even concentration, and
Continuous measurement raw material and the concentration monitoring device for the mixed proportion for grinding liquid are installed in pigment blending tank, liquid is ground by control
Magnitude of recruitment the concentration of abrasive material is maintained into 18%-22% between, by experiment statisticses, the concentration of control " abrasive material " maintains
20% can ensure that the maximum production of production line and product quality optimize；
In the present embodiment, the defoamer ground in liquid is polypropylene glycerol aether, and activating agent is polyacrylic acid, and softening agent is
SA dioctyl ester, plasticizer are dioctyl phthalate, and cleaning agent is the production of Shanghai Jing Bi daily use chemicals Science and Technology Ltd.
028 type cleaning agent；Defoamer can avoid producing foam in whipping process in abrasive material and causing uneven concentration；Activating agent can be kept away
Exempt from rubber powder conglomeration in abrasive material, cleaning agent can remove the greasy dirt on rubber powder surface, reduce the attachment on rubber powder surface, improve
Rubber powder surface adhesion；Softening agent can reduce hardness of the rubber powder in process of lapping, reduce in process of lapping to rubber point
The destruction of son；Plasticizer may be such that rubber powder expansion appropriate in process of lapping, beneficial to obtaining fluffy and uniform particle sizes rubbers
Rubber powder, while the specific surface area of rubber powder can be expanded；Under the synergy of activating agent, cleaning agent, softening agent and plasticizer
So that to have that surface area is big, surface is clean, rubber powder granule is uniform in size, surface texture is fluffy etc. excellent for the obtained rubber powder of grinding
Point；
Specifically it may refer to shown in Fig. 2 to Fig. 4, wherein Fig. 2 is that dry process directly grinds the particle diameter of production in 60 purposes
The electron-microscope scanning figure of rubber powder, figure it is seen that single powder particle surface of rubber powder of dry process production is very fine and close, glue
Powder surface is then neat as knife is cut, and surface area is small, is individually present between wide and single powder of size distribution, each other without even
Connect, matrigel adhesion is poor；Fig. 3 be using water to grind liquid, using particle diameter that the inventive method obtains 60 mesh rubber powder
Electron-microscope scanning figure, from figure 3, it can be seen that it is only more uniform using water as the rubber powder particle diameter distribution for grinding liquid acquisition, but surface
Structure is dense, the combination for the chemical bond being unfavorable between rubber molecule, and shrinkage phenomenon, base occurs in rubber powder surface
The cementing combination of making a concerted effort of matter is not strong, vulcanized rubber powder unclarity, it is understood that there may be attachment；Fig. 4 be add with 98 parts of water, 0.3 part
What defoamer, 0.6 part of activating agent, 0.2 part of cleaning agent, 0.5 part of softening agent, 0.4 part of plasticizer mixed grinds
Liquid then using the inventive method obtain particle diameter 60 mesh rubber powder electron-microscope scanning figure, figure 4, it is seen that (1)
Rubber powder surface texture is complicated, there is many gullies and bumps, so surface area is big, i.e., the rubber powder of identical mesh number, contained by its surface
Some unsatisfied chemical bonds are also more, and when unsatisfied chemical bond meets in the chemical bond and matrigel of this part, it participates in anti-
The probability answered is greatly increased, and so as to form the chemical binding force for being several times as much as common rubber powder, tridimensional network is formed with matrigel
Strong bonded is together；(2) rubber powder is bright, and surface is clean, and hardly staining metal, surface is unfolded naturally, so as to strengthen and matrix
Unsatisfied chemical bond in glue can fully play chemical crosslink reaction, form stable tridimensional network；(3) granular size compares
Uniformly, due to rubber powder be grind among liquid crush, defoamer, activating agent, cleaning agent, softening agent and plasticizer collaboration make
Under so that glue powder particle surface not static electrification, agglomeration will not occur, can be relatively evenly distributed in when being mixed with matrigel
In whole matrix colloid system, matrigel is formed complete continuous phase, the original physical property of matrigel, rubber powder will not be destroyed
Then preferably by matrigel parcel wherein, each rubber powder granule is fully combined with matrigel, play to greatest extent
Vulcanized rubber powder product is big, so as to strengthen the adhesion with matrigel, and then has been lifted in terms of some physical property；(4) vulcanized rubber powder
Fluffy, surface does not produce coking and shrinkage phenomenon, and rubber powder is crushed in liquid is ground, and is to circulate due to grinding liquid
, can take away heat caused by substantial amounts of mechanical rotation, therefore energy rubber powder be it is broken at a lower temperature, to greatest extent
The various good characteristics of rubber molecular chain are remained, and in defoamer, activating agent, cleaning agent, softening agent and plasticizer etc.
In the presence of auxiliary agent so that vulcanized rubber powder does not produce coking and shrinkage phenomenon, so as to improve the tensile strength of elastomeric compound
And tearing strength.
The bigger impurity of fine sand isodensity is deposited in mixing pot bottom in whipping process, and textile fabric then floats over mill
Above liquid processed, abrasive material is finally extracted in the middle part of pigment blending tank so as to remove most impurity.
S3, grind,
Abrasive material is extracted from pigment blending tank, being pumped to grinder by pipeline is refined, and the concentration for controlling abrasive material is
18%-22%, wherein, the abrasive sheet of 3 layers 3 is equipped with grinder, referring specifically to shown in Fig. 6 to Fig. 8, one of them is
Disk abrasive sheet 10, two other is price fixing abrasive sheet 20, and the gap between neighboring abrasive piece is maintained at 2 microns, makes in abrasive material
Rubber powder granular size is levigate to more than 60 mesh by 10-20 mesh, and Moving plate abrasive sheet 10 and price fixing abrasive sheet 20 are equal in the present embodiment
For the sintering ceramics of loose structure, wherein Moving plate abrasive sheet 10 uses two-sided roll flute, and Moving plate abrasive sheet 10 wraps successively from inside to outside
Include fracture area 11, corase grind area 12 and fine grinding area 13, the fracture area 11, corase grind area 12 and fine grinding area 13 in be provided with density according to
The roll flute 21 of secondary increase, the roll flute 21 of even density is provided with the price fixing abrasive sheet 20, and the roll flute 21 is ground with price fixing
Offset centered on the centre point of piece 20 and to the left or to the right 0.5 degree of circumferentially array distribution；
In the present embodiment under the cooperation of Moving plate abrasive sheet and price fixing abrasive sheet, the uniformity of rubber powder can be effectively improved
And the specific surface area of rubber powder is improved, as shown in Figure 4 and Figure 5, Fig. 4 is to use Moving plate in the present embodiment to grind to specific experiment effect
The obtained electron-microscope scanning figure of rubber powder is ground under grinding and the cooperation of price fixing abrasive sheet, Fig. 5 is ground using traditional 2 layers 2
The electron-microscope scanning figure of rubber powder after grinding and the identical roll flute grinding of grinding piece collection；Comparison diagram 4 and Fig. 5 can be seen that in Fig. 5
Rubber powder surface it is finer and close, and the uniformity of rubber granule particle diameter distribution is substantially not so good as Fig. 4, the rubber powder surface in Fig. 5
Cutting is neat, and surface area is small, and its rubber powder of potential tensile strength and tearing strength than being obtained in Fig. 4 is poor；
S4, wet sieving,
Screening machine is pumped to by the abrasive material of grinding, is sifted out qualified rubber powder using the screen cloth of 60 mesh, and will not
Qualified rubber powder is pumped in pigment blending tank again by delivery pump to carry out circulation and grinds, and in order to increase screening efficiency, needs
First to dilute abrasive material makes qualified sizing material faster sieving separating, and screen cloth is carried out spraying cleaning in order to avoid blocking；
S5, dehydration,
Qualified rubber powder by delivery pump is pumped to centrifuge after sifting out, and carrying out predrainage by centrifuge forms wet glue
Powder, the wet rubber powder Jing Guo predrainage is then delivered to filter press, by the residue inside wet rubber powder by way of volume compression
Moisture oppresses out by force, and the mass dryness fraction for controlling wet rubber powder to export out from filter press is 60%-70%；
S6, drying,
Wet rubber powder by dehydration is delivered in the rotary drying stove being dried using solar energy and is dried, is controlled
Drying temperature is maintained between 160-170 degrees Celsius in rotary drying stove processed, and the mass dryness fraction of coming out of the stove for controlling rubber powder is 94%-96%
Between, the mass dryness fraction of coming out of the stove of rubber powder is unsuitable too high, mass dryness fraction more than 96% after occur the phenomenon got damp, coming out of the stove for rubber powder is dry
Degree is also unsuitable too low, does not otherwise reach storage request；
Comprising the following steps that using the wet rubber powder of solar energy drying wherein in this implementation：
S61, solar energy heating Medium Oil；The Medium Oil being stored in medium storage tank is conveyed by circulating pump via medium
In pipeline to pressure-bearing type sealing solar heat-collection plate, pressure-bearing type sealing solar heat-collection plate absorbs solar energy and quickly heats Jie
Matter oil, and media heat exchanger is delivered to, after heat exchange, Medium Oil is reentered in medium storage tank and circulated；Using solar energy
The method of heating Medium Oil provides thermal source for dry-heat air, and dry-heat air is produced using burning natural gas so as to instead of tradition
Method, it is possible to reduce energy resource consumption, meanwhile, the heat energy of solar heat-collection plate collection directly inputs drying oven and is used without storage
Thermal so that package unit operational efficiency is high, and floor space is small；Wherein in order to meet the requirement of subsequent heat, the system is adopted
Medium Oil is independently developed blending agent oil, by hydrogenation tail oil of the parts by weight for 65 parts, 33 parts of double benzyl toluene types
(polymerase chain alkenyl succinimide carboxylate, by Hubei, conscience Environmental Protection Technology Co., Ltd carries for Medium Oil, 0.5 part of anti-coking agent
For), 0.8 part of stabilizer is (by diglycidyl ether and thylhexoic acid barium with 1:1 mass ratio composition), 0.3 part of antioxidant (by
Cerous chloride, terephthalic acid (TPA) and sodium pyrosulfite are with 1:2:1 mass ratio composition) mix, this blending agent oil has
Low heat capacity ratio, high boiling characteristic, this Medium Oil can quickly absorb the heat energy of solar energy conversion, and programming rate is fast, test number
According to showing that it is Celsius that this Medium Oil 3min or so in pressure-bearing type sealing solar heat-collection plate can be warming up to 350-380 by normal temperature
Degree, and still possess good heat endurance at 350-380 degrees Celsius, and aldehydes matter will not be produced, it is especially suitable
In being rapidly heated for solar energy heating, its design parameter can be shown in Table 1；
Table 1 uses the self-control blending agent oil performance parameter correction data oily with typical media
Table 1 is the homemade blending agent oil of the present invention and heavy diesel fuel (conventional mineral oil) and biphenyl ether type conduction oil
The comparison of (conventional synthesis conduction oil) each property, as it can be seen from table 1 the homemade blending agent oil phase of the present invention compares heavy diesel fuel
(conventional mineral oil) not only has higher temperature in use, and (specific heat capacity is lower, rise 1 with relatively low specific heat capacity
The heat absorbed needed for degree Celsius is fewer), the homemade blending agent oil phase of the present invention than biphenyl ether type conduction oil, (lead by conventional synthesis
Deep fat) although maximum operation (service) temperature is slightly too late, equally there is relatively low specific heat capacity, and will not be produced during use
It aldehydes matter, can avoid that container is caused to damage；As can also be seen from Table 1, under the same conditions, this Medium Oil is in pressure-bearing
3min or so can be warming up to 360 degrees Celsius by normal temperature in formula sealing solar heat-collection plate, and biphenyl ether type conduction oil then needs 11min
It could realize and be warming up to 360 degrees Celsius by normal temperature in pressure-bearing type sealing solar heat-collection plate, and heavy diesel fuel then needs 18min ability
Realize and be warming up to 360 degrees Celsius by normal temperature in pressure-bearing type sealing solar heat-collection plate, it can be seen that, this Medium Oil can be significantly
Improve the efficiency of solar energy drying；
S62, heat exchange type into heating hot blast；Under the driving of air blower, the Cryogenic air of external environment is returned by used heat
Receive heat exchanger to enter rotary drying stove and absorb the heat for the damp-heat air for giving off drier, lift Cryogenic air temperature
And humidity is reduced, then warm air passes through media heat exchanger again, because Medium Oil flows through media heat exchanger, warm air simultaneously
The heat of absorbing medium oil is rapidly heated, and forms the hot blast of high temperature drying and is sent into rotary drying stove；Wherein, for drying wet rubber
The Cryogenic air of rubber powder becomes low humidity high-temperature after first passing around the heat progress heat exchange with waste heat recovery heat exchanger recovery
Warm air, be then Medium Oil carry out heat exchange so that the warm air for drying wet rubber powder is brought rapidly up into
150-170 degrees Celsius of hot blast, consequently, it is possible to which other thermals source need not be supplemented, only it can be can be achieved by solar energy to drying
The heating of hot blast, and tradition in order to strengthen drying efficiency, can typically cause dry-heat air to maintain when using heated by natural gas hot blast
At 300-400 degrees Celsius, hot blast temperature is too high, and the sulfurous pollutants in rubber powder can be caused with caused waste gas in drying process
Together discharge, pollute environment, and high temperature can destroy the structure of rubber molecule, it was proved that, when the temperature of dry-heat air
When maintaining 150-170 degrees Celsius, it will not cause that rubber powder produces because temperature is too high in drying process and contain sulphur pollution, also not
The structure of rubber molecule can be destroyed；
S63, wet rubber powder rotary drying；Helical baffle, the fine wet rubber as made from step S5 are set in rotary drying stove
Rubber powder enters rotary drying stove from entrance, moistening rubber powder is rolled wherein in body of heater rotary course, makes rubber powder fluffy
And fully contacted with hot blast so as to evaporate moisture, and helical baffle can promote rubber powder to be shifted from entrance to outlet, work as rubber
Fully dry when powder reaches outlet and discharged from outlet；Wherein, in order that wet rubber powder drying efficiency is higher, special envoy uses back
Turn the hot blast flash evaporation furnace in drying oven substitution conventional drying processes, because rotary drying stove causes moistening rubber in rotary course
Powder rolls in body of heater, not only expands hot blast and moistens the contact area of rubber powder, and can cause rubber in the drying process
Rubber powder is fluffy so that drying is more uniform, avoids lump rubber powder, improves the dry mass of rubber powder, pass through helical baffle
Beneficial to drying time of the control rubber powder in rotary furnace, dry and wet powder sort using air blower in traditional technique and defeated
Send, be unfavorable for the control of drying time；
S64, Waste Heat Recovery；The dry-heat air for absorbing moisture forms damp-heat air from waste heat recovery heat exchanger discharge revolution
For drying oven so as to reclaim used heat, the heat of waste heat recovery heat exchanger recovery is used for the Cryogenic air of circulating-heating external environment；Its
In, the partial heat in the dry-heat air for absorbing moisture can be reclaimed by waste heat recovery heat exchanger, and be used for heat blowing
Cryogenic air in machine, so as to realize the recycling of partial heat, energy consumption is further saved；
In the present embodiment, it is 360-370 degrees Celsius to control Medium Oil to enter the temperature that media heat exchanger is exchanged heat, control
The temperature of high temperature drying hot blast is 160 degrees Celsius after heat exchange, and helical baffle promotes be the time of wet rubber powder from the inlet to the outlet
20-30min.It was found that, pressure-bearing type sealing solar heat-collection plate in a short period of time can heat up blending agent oil
To 350-380 degrees Celsius (experiment find Medium Oil only need to pass through three circulation, 380 degrees Celsius can be warming up within general 5 minutes),
The temperature more than 380 degrees Celsius is warming up to if desired, Medium Oil needs just reach by repeatedly circulation, and when mixing
, can be by for drying wet rubber powder by common media heat exchanger when medium oil temperature is warming up to 350-380 degrees Celsius
Warm wind is warming up to 150-170 degrees Celsius, to the less demanding of media heat exchanger, can save equipment cost, high temperature drying hot blast
Temperature be optimally maintained at 160 degrees Celsius, the dry-heat air at a temperature of this has higher drying efficiency, while will not be because of temperature
Spend high and make it that rubber powder produces and contain sulphur pollution, will not also destroy the structure of rubber molecule.Helical baffle promotes wet rubber powder
Time from the inlet to the outlet is 20-30min, it is demonstrated experimentally that when the fine wet rubber powder relative humidity entered in rotary furnace is
30%, and when high temperature drying hot blast maintains 160 degrees Celsius, only need 20-30min to complete to fine by rotary drying stove
Wet rubber powder dries requirement, contrasts traditional hot blast flash evaporation furnace drying mode, hot blast flash evaporation furnace finished product consumption electric energy 100 per ton
80 cubic metres of kilowatt hour, natural gas, and use the drying means finished product per ton of the present invention only to consume the kilowatt hour of electric energy 70；
S7, dry sieving and packing,
Be delivered to by dried rubber powder by way of pipeline wind is sent in powder sieving machine, powder sieving machine with it is more
The baling press connection of the individual different meshes being arranged side by side, powder sieving machine are directly entered phase after screening out the rubber powder of different meshes
Answer in the baling press of mesh number and packed, the mode that dried rubber powder is sent using pipeline wind is delivered to baling press, can be simultaneously simultaneous
Gu Gaoxiao, cleaning, non-environmental-pollution, and during wind gives while make to be down to normal temperature at a temperature of rubber powder, after avoiding packing
Temperature accumulation and cause potential safety hazard；
It in actual mechanical process, can be required according to customer order, the screen cloth of different meshes is installed before baling press, made
Finished product reaches different grade of mesh number, then directly packs, such as installs the screen cloth of 60 mesh, 80 mesh and 100 mesh respectively, respectively
To the rubber powder of corresponding grade of mesh number, 60 mesh rubber powder yield are big in the market, price is low, it is wide to be applicable industry wide, are main
Finished product model, 80 mesh rubber powder yield are less than normal, application scenario that is moderate, being adapted to high-quality requirement, more than 100 mesh super
Thin rubber powder is sophisticated energy rubber powder, is adapted to the application scenarios such as auto parts machinery, 3D printing.
Fig. 9 is the product inspection report for the fine rubber powder being prepared using method described in the present embodiment, from Fig. 9
As can be seen that all indexs that the fine rubber powder being prepared using method described in the present embodiment detects to obtain meet or
Person exceedes national standard, and wherein rubber hydrocarbon content and elongation rate of tensile failure two indices is even more that greatly exceed national standard, and this
Two indices are two key indexs for judging rubber powder quality, represent fine rubber powder made from this method and are subsequently being kneaded
In use, its intensity index can even be better than the characteristic of virgin rubber, its reason is ground during liquid grinds combining, and is being disappeared
Infusion, activating agent, cleaning agent, softening agent and plasticizer synergy under, may be to the original knot of rubber in grinding process
Structure is improved, and in combination with shown in Fig. 4, the fine rubber powder surface being prepared using method described in the present embodiment is thick
It is rough, have many irregular gullies, gap and height are all very small between gully, thus virgin rubber imbed gully after bond strength just
Height, rubber powder is combined with virgin rubber substrate surface to be inlayed in indenting shape, and netted contact is considerably increased in space three-dimensional direction
The combination of area, rubber powder and virgin rubber can significantly improve, and as rubber powder adds increasing number, rubber powder granule spacing is less and less, just
As the mesh of fishnet tapers into, the intensity of whole net battle array, hardness is set all to improve immediately, it is anti-just as being added in virgin rubber structure
Pressure, tension and antitorque space multistory mesh skeleton, greatly enhance bond strength, toughness and wearability of colloid etc., so as to
So that indices reach the characteristic of virgin rubber, partial properties are higher than virgin rubber.
The preparation method of this fine rubber powder expects the whole processing process of product all in closing in completion former material
Environment, it can be pumped because raw material mixes with water using pipeline, so workshop flexible layout, occupied ground is few, raw
Production noise be largely only absorbed by the water and be limited in inside pipeline, noise pollution is minimum, whole processing link substantially without airborne dust without
Noxious emission, to the complete close friend of environment.
Described above is presently preferred embodiments of the present invention, but the present invention should not be limited to the embodiment and accompanying drawing institute is public
The content opened, so every do not depart from the lower equivalent or modification completed of spirit disclosed in this invention, both fall within protection of the present invention
Scope.
Claims (9)
1. a kind of fine rubber powder, preparation method thereof, it is characterised in that specifically comprise the following steps：
S1, Feedstock treating,
Rubber powder first by junked tire by crusher in crushing into 10-20 mesh, the rubber powder after then crushing are stored in
In raw material storage tanks, glassware is quantified in the discharging opening installation of raw material storage tanks, ensures lasting feed, and after glassware is quantified
Strong magnetic magnetic separator de-ironing is installed by side, removes the iron filings impurity in rubber powder；
S2, material mixing is ground,
Using feeding screw by the rubber powder feedstock transportation after removing scrap iron removing impurity into pigment blending tank, and to pigment
It is continually fed into blending tank and grinds liquid, the water, 0.3 part of defoamer, 0.6 part of activity for grinding liquid and being 98 parts by parts by weight
Agent, 0.2 part of cleaning agent, 0.5 part of softening agent, 0.4 part of plasticizer mix, and rubber powder raw material and grind liquid in pigment
Persistently stirred by mixer in blending tank, make raw material and grind the abrasive material that liquid is thoroughly mixed to form even concentration；
S3, grind,
Abrasive material is extracted from pigment blending tank, being pumped to grinder by pipeline is refined, and the concentration for controlling abrasive material is 18%-
22%, wherein, the abrasive sheet of multilayer multi-disc is equipped with grinder, the rubber powder granular size in abrasive material is ground by 10-20 mesh
Carefully to more than 60 mesh；
S4, wet sieving,
Screening machine is pumped to by the abrasive material of grinding, is sifted out qualified rubber powder using the screen cloth of 60 mesh, and will be unqualified
Rubber powder be pumped to again by delivery pump in pigment blending tank and carry out circulation and grind；
S5, dehydration,
Qualified rubber powder by delivery pump is pumped to centrifuge after sifting out, and carrying out predrainage by centrifuge forms wet rubber powder,
Then the wet rubber powder Jing Guo predrainage is delivered to filter press, by the residual moisture inside wet rubber powder by way of volume compression
Compressing comes out by force, and the mass dryness fraction for controlling wet rubber powder to export out from filter press is 60%-70%；
S6, drying,
Wet rubber powder by dehydration is delivered in the rotary drying stove being dried using solar energy and is dried, is controlled back
Turn drying temperature in drying oven to be maintained between 160-200 degrees Celsius, control rubber powder come out of the stove mass dryness fraction for 94%-96% it
Between；
S7, dry sieving and packing,
Be delivered to by dried rubber powder by way of pipeline wind is sent in powder sieving machine, powder sieving machine with it is multiple simultaneously
The baling press connection of the different meshes set is arranged, powder sieving machine is directly entered corresponding mesh after screening out the rubber powder of different meshes
Packed in several baling presses.
2. fine rubber powder, preparation method thereof as claimed in claim 1, it is characterised in that specifically taken in the step S6 as follows
Step is dried：
S61, solar energy heating Medium Oil；The Medium Oil in medium storage tank is stored in by circulating pump via medium delivery pipe road
It is delivered in pressure-bearing type sealing solar heat-collection plate, pressure-bearing type sealing solar heat-collection plate absorbs solar energy and quickly heats medium
Oil, the temperature for controlling Medium Oil to heat is 350-380 degrees Celsius, is then sent to media heat exchanger, after heat exchange, Medium Oil
Reenter in medium storage tank and circulate；
S62, heat exchange type into heating hot blast；Under the driving of air blower, the Cryogenic air of external environment is changed by Waste Heat Recovery
Hot device enters rotary drying stove and absorbs the heat for the damp-heat air for giving off drier, lifts Cryogenic air temperature and drops
Low humidity, then warm air pass through media heat exchanger again, because Medium Oil flows through media heat exchanger simultaneously, warm air absorbs
The heat of Medium Oil is rapidly heated, and forms the hot blast of high temperature drying and is sent into rotary drying stove, and the temperature for controlling hot blast is 150-
170 degrees Celsius；
S63, wet rubber powder rotary drying；Helical baffle, the fine wet rubber powder as made from step S5 are set in rotary drying stove
Enter rotary drying stove from entrance, moistening rubber powder is rolled wherein in body of heater rotary course, make rubber powder fluffy and with
Hot blast is fully contacted so as to evaporate moisture, and helical baffle can promote rubber powder to be shifted from entrance to outlet, when rubber powder arrives
Fully dry and discharged from outlet up to during outlet；
S64, Waste Heat Recovery；The dry-heat air for absorbing moisture forms damp-heat air from waste heat recovery heat exchanger discharge rotary drying
For stove so as to reclaim used heat, the heat of waste heat recovery heat exchanger recovery is used for the Cryogenic air of circulating-heating external environment.
3. fine rubber powder, preparation method thereof as claimed in claim 2, it is characterised in that：The Medium Oil is blending agent oil,
By 65 parts of hydrogenation tail oil, 33 parts of double benzyl toluene type Medium Oils, 0.5 part of anti-coking agent, 0.8 part of stabilizer, 0.3 part it is anti-oxidant
Agent mixes, and described part is parts by weight.
4. fine rubber powder, preparation method thereof as claimed in claim 3, it is characterised in that：The anti-coking agent is polyalkenyl succinic
Imide ester compound, provided by Hubei conscience Environmental Protection Technology Co., Ltd；The stabilizer is by diglycidyl ether and ethyl hexyl
Sour barium is with 1:1 mass ratio composition；The antioxidant is by cerous chloride, terephthalic acid (TPA) and sodium pyrosulfite with 1:2:1
Mass ratio forms.
5. fine rubber powder, preparation method thereof as claimed in claim 2, it is characterised in that：Control Medium Oil enters media heat exchanger
The temperature to be exchanged heat be 360-370 degrees Celsius, control heat exchange after high temperature drying hot blast temperature be 160 degrees Celsius, spiral every
It is 20-30min that plate, which promotes the time of wet rubber powder from the inlet to the outlet,.
6. fine rubber powder, preparation method thereof as claimed in claim 1, it is characterised in that：The defoamer is polyoxypropylene glyceryl
Ether, the activating agent are polyacrylic acid, and the softening agent is SA dioctyl ester, and the plasticizer is that phthalic acid two is pungent
Ester, the cleaning agent are 028 type cleaning agent of Shanghai Jing Bi daily use chemicals Science and Technology Ltd. production.
7. fine rubber powder, preparation method thereof as claimed in claim 1, it is characterised in that：In the step S2 in pigment blending tank
Continuous measurement raw material and the concentration monitoring device for the mixed proportion for grinding liquid are installed, the magnitude of recruitment of liquid will be ground by control to be ground
The concentration of material is maintained between 18%-22%.
8. fine rubber powder, preparation method thereof as claimed in claim 1, it is characterised in that：In the step S3, grinder is built-in
With the abrasive sheet of 3 of having three layers, one of them is Moving plate abrasive sheet, and two other is price fixing abrasive sheet, between neighboring abrasive piece
Gap is maintained at 1-5 microns.
9. fine rubber powder, preparation method thereof as claimed in claim 8, it is characterised in that：Moving plate abrasive sheet and the price fixing grinding
Piece is the sintering ceramics of loose structure, and the Moving plate abrasive sheet includes fracture area, corase grind area and fine grinding area successively from inside to outside,
The roll flute that density increases successively is provided with the fracture area, corase grind area and fine grinding area, is provided with the price fixing abrasive sheet
The roll flute of even density, the roll flute is centered on the centre point of price fixing abrasive sheet and offsets 0.5 degree in circle to the left or to the right
All array distributions.
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| CN110804231A (en) * | 2018-08-06 | 2020-02-18 | 中胶伟业（北京）科技发展有限公司 | Rubber powder and preparation method thereof |
| CN112405939A (en) * | 2020-11-07 | 2021-02-26 | 江苏特伟尔斯新材料有限公司 | Waste foamed plastic recycling process |
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| CN107379333B (en) | 2018-06-08 |
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Effective date of registration: 20180521 Address after: 510024 shop 101, 30 East Road East Road, Zeng Jiang Jie, Zengcheng, Guangzhou, Guangdong Applicant after: Guangzhou Hongtai science and Technology Development Co., Ltd. Address before: 511300 Zengcheng Zeng Jiang District, Guangzhou, Guangdong, No. 3, No. three road, A1, A4 Applicant before: Its Science and Technology Co., Ltd. is liked in Guangzhou |
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Application publication date: 20171124 Assignee: Guangzhou City, Jiangsu Province, rubber and plastic new materials Co., Ltd. Assignor: Guangzhou Hongtai science and Technology Development Co., Ltd. Contract record no.: 2018440000119 Denomination of invention: Preparation method for fine rubber powder Granted publication date: 20180608 License type: Common License Record date: 20180919 |