CN109134932A - Rubber product reinforcement modified coal ash and preparation method thereof - Google Patents
Rubber product reinforcement modified coal ash and preparation method thereof Download PDFInfo
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- CN109134932A CN109134932A CN201810993354.9A CN201810993354A CN109134932A CN 109134932 A CN109134932 A CN 109134932A CN 201810993354 A CN201810993354 A CN 201810993354A CN 109134932 A CN109134932 A CN 109134932A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
Abstract
The invention discloses a kind of rubber product reinforcement modified coal ash and preparation method thereof, and wherein rubber product reinforcement is that 100 parts of flyash and 5-20 parts of modification mixed powder are mixed to get by parts by weight with modified coal ash；Wherein, the modified mixed powder is made of the raw material of following parts by weight: stearic acid 10-20, Aluminate 5-10, paraffin 5-10, epoxy resin 10-20, silane coupling agent 5-10, natural rubber powder 5-10, zinc oxide 0.1-0.2, sulphur 0.05-0.1 and accelerator DM 0.08-0.12.It is by the improvement of formula, so that modified fly ash surface modification is uniform, activation index is high, high with rubber product conjugation, increases the loading in rubber product；Simultaneously the modification of flyash is once completed in the preparation of modified coal ash, and avoid drying, crush and etc., simplify technique, improve efficiency, it is modified respectively for partial size difference simultaneously, so that surface modification is more uniform, improves the performance of modified coal ash.
Description
Technical field
The present invention relates to flyash modified technical field, in particular to a kind of rubber product reinforcement modified coal ash and its
Preparation method.
Background technique
China is a big coal country, using coal as power generation substantially fuel.Being skyrocketed through for generating capacity, brings powder
Coal ash discharge amount sharply increases, and the development of the national economy and ecological environment to China cause huge pressure.On the other hand, I
State is the per capita limited country of resource reserve again, and the comprehensive utilization of flyash turns waste into wealth, turns bane into boon, has become
To solve the environmental pollution of China's power generation for an important techno-economic policy in economic construction of China, resource shortage it
Between contradictory important means and one of the task of the faced solution of power generation.
Currently, the utilization of flyash is also concentrated mainly on building materials, builds the road, backfills, agricultural and chemical industry etc..These methods
Though can solve the recycling of part flyash, surcharge is low, with certain secondary pollution.With the development of technology, powder
Coal ash is also gradually available for high molecular material padding field, but since fine coal gray density is big, surface hydroxyl is more, and hydrophily is strong, causes
Easily settled in the material, layering, it is poor with material compatibility, decline composite material comprehensive mechanical property.Even if being changed using surface
Property method can increase limited compatibility, but due to flyash complicated composition, contain silica, di-iron trioxide, three oxidations
The Multicomponents such as two aluminium, usually single method of modifying improves the limitation with the compatibility of base rubber material, to rubber
The reinforcement of product is unobvious.
Rubber product be with certain elasticity, intensity, wear-resisting property product, rubber product in people's economic life respectively
A aspect has obtained extensive utilization, has other materials irreplaceable role.It is with natural rubber, butadiene-styrene rubber, suitable
The materials such as the raw rubbers such as buna, nitrile rubber and carbon black, vulcanizing agent, plasticizer, anti-aging agent are by mixing, temperature-pressure sulphur
Change a kind of obtained elastic article.Wherein carbon black is the best reinforcing agent of rubber product, and the stretching that can improve rubber product is strong
The comprehensive performances such as degree, wearability, tear-proof.Carbon black used in present rubber product is mostly prepared by natural gas, petroleum.With day
The reduction of right gas, reserves, the price of carbon black will constantly raise up.With the part charcoal in modified coal ash substitution rubber product
Black and filler is comprehensive utilization flyash, improves important channel for its surcharge, and reduction oil and natural gas etc. no
The important measures of renewable resource consumption.There are great economic results in society and environmental benefit using coal ash instead carbon black.
Most to flyash modified approach application at present is using silane coupling agent, titanate coupling agent, zirconium aluminic acid
Salt coupling agent, Organic Chromium coupling agent, higher fatty acids, surfactant etc..Due to flyash main ingredient include silica,
Di-iron trioxide, aluminum oxide etc., using coupling agent treatment to therein silica modified more effective, but to metal
The effect of oxide process is then unobvious.It is modified in addition, the prior art carries out surface using single modified material, is difficult selection one
Kind was not only firmly combined with flyash, but also the modifying agent being firmly combined with rubber matrix, so that the shape between flyash and rubber matrix
At be weak boundary layer, reinforcing effect is unobvious.Application No. is 201510847857.1 Chinese patents for the prior art
Drawbacks described above proposes a kind of formula being modified to flyash and preparation method newly, avoids coupling agent and strong acid is strong
The use of acid, so that cost reduces, operation is safer, and the surface of flyash is modified also more uniform, increases in rubber system
Loading in product improves mechanical mechanics property, but preparation method uses coating twice and is modified, and applies at second
Flyash is crushed after covering, coating increases modified processing step twice, while modification can be destroyed in crushing process
Flyash plays the role of the content of main spherical microballon in the reinforcing effect of rubber, so that modified coal ash is to rubber
The reinforcing effect of glue reduces.
Summary of the invention
It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide a kind of rubber product reinforcement modified coal ash, by the improvement of formula,
So that modified fly ash surface modification is uniform, activation index is high, high with rubber product conjugation, increases in rubber product
In loading.
It is a still further object of the present invention to provide a kind of preparation methods of rubber product reinforcement modified coal ash, to fine coal
The modification of ash is once completed, and is avoided drying, crushed, and is simplified technique, is improved efficiency, while not for partial size
With being modified respectively, so that surface modification is more uniform, the performance of modified coal ash is improved.
In order to realize these purposes and other advantages according to the present invention, a kind of modified powder of rubber product reinforcement is provided
Coal ash, wherein be mixed to get by parts by weight for 100 parts of flyash and 5-20 parts of modification mixed powder；
Wherein, the modified mixed powder is made of the raw material of following parts by weight: stearic acid 10-20, Aluminate 5-10, paraffin
5-10, epoxy resin 10-20, silane coupling agent 5-10, natural rubber powder 5-10, zinc oxide 0.1-0.2, sulphur 0.05-0.1
And accelerator DM 0.08-0.12.
Preferably, in the rubber product reinforcement modified coal ash, the mesh number of the modified mixed powder is 250-
350 mesh.
A kind of preparation method of rubber product reinforcement modified coal ash, mainly comprises the steps that
S1, flyash is added in reaction kettle by the top opening of reaction kettle, the filter screen in the reaction kettle is to fine coal
Ash is sieved, and the multilayer screening flyash according to granularity different distributions in the reaction kettle is obtained；
S2, it weighs to the screening flyash of each layer；
S3, by stearic acid, Aluminate, paraffin, epoxy resin, silane coupling agent, natural rubber, zinc oxide, sulphur and sulphur
Change promotor to be crushed respectively, and proportionally mixed after 250-350 mesh excessively, obtains modified mixed powder；
S4, the modification for needing to be added according to each layer of weight and Granular Computing of the screening flyash of the obtained each layer of S2 are mixed
Close the quantity of powder；
S5, each layer obtained according to S4 need the quantity for the modification mixed powder being added to be added what S3 was obtained into each layer respectively
Modified mixed powder, obtains pre- modified coal ash；
S6, each layer of the reaction kettle is heated respectively, and 30- is persistently stirred to the pre- modified coal ash of each layer
60min reacts the pre- modified coal ash sufficiently, obtains the first modified coal ash；
First modified coal ash for each layer that S7, S6 are obtained is cooled to room temperature, and to get the modified powder after mixing
Coal ash.
Preferably, in the preparation method of the rubber product reinforcement modified coal ash, in S1, the filter screen
Mesh is 100-350 mesh.
Preferably, in the preparation method of the rubber product reinforcement modified coal ash, in S4, modified mixing is added
The quantity of powder increases with the granularity of flyash and is increased.
Preferably, in the preparation method of the rubber product reinforcement modified coal ash, the reaction kettle is specifically wrapped
It includes:
Autoclave body is hollow cylinder；Feeding port is offered at the top of the autoclave body, bottom is provided with collection material mouth；It is described
Autoclave body is set as bilayer autoclave body made of being mutually arranged as inner shell and outer shell；The inner shell passes through support spring
It is connected to outer shell；
Filter screen is horizontally set on the inner shell in such a way that the inner wall at edge and the inner shell is mutually supported
Inside, the filter screen are set as multiple；Multiple filter screen meshes are different, and are parallel to each other and to form multiple screen layers excessively
Face；The mesh for the filter screen arranged downwards by the top of the autoclave body is gradually reduced；The bottom of the filter screen is provided with
Weight sensor；Primary heater is provided in the filter screen；
Rabbling mechanism comprising agitating shaft and stirring blade；The stirring blade and stirring axis connection, and in the stirring
It is rotated under the drive of axis, the agitating shaft is extended downwardly by the top vertical of the inner shell, and is passed through and filtered described in multilayer
Sieve, to penetrate through the inside of the inner shell；The stirring blade is set as multiple, and multiple stirring blades are set to every phase
Position between adjacent two layers of filter screen, forms multiple stirring layers；Secondary heater is provided in the stirring blade；
Vibrating mechanism is connected to inner shell, to drive inner shell to vibrate.
Preferably, in the preparation method of the rubber product reinforcement modified coal ash, the agitating shaft is hollow
Setting offers discharge port on the stirring blade, is provided with more conveying pipelines in the agitating shaft, more conveying pipelines
First end stretches out the autoclave body by the top of the agitating shaft, and second end is respectively connected to each stirring blade.
Preferably, in the preparation method of the rubber product reinforcement modified coal ash, the filter screen is by two
Semicircular branch filter sieve is bonded to each other with the edge of straight line to be spliced to form, and the branch filter sieve is turned down with arc-shaped side
When make in the autoclave body to be divided into multilayer up and down or by branch filter screening.
The present invention is include at least the following beneficial effects:
The present invention changes flyash so that being modified mixed powder by the hybrid reaction of flyash and modified mixed powder
Property, fly ash surface modification is uniform, and by the reaction that raw material is made of the rubber products such as natural rubber, zinc oxide, sulphur, makes
The amalgamation for obtaining modified coal ash and rubber, enhances the binding force with rubber product, increases modified coal ash in rubber
Loading.
The metal oxides such as hydroxyl, di-iron trioxide, alchlor of silica surface in epoxy resin and flyash
Ionic bond react absorption, a small amount of of silane coupling agent applies while reduce costs, changes to silica in flyash
Property is more effective；The addition of the raw materials such as the constituent of rubber product forms strong work each other between flyash and rubber material
Boundary layer firmly, in conjunction with stronger, the transmitting of interface interaction power uniformly, can increase the loading in rubber product, improve machine
Tool mechanical property.
The modification that the proposition of innovation distinguishes flyash according to the difference of partial size, so that the use of modified mixed powder
Amount is adjusted according to partial size difference, saves the dosage of modified mixed powder, while making flyash and being modified the mixed of mixed powder
It closes and reaction is more complete, improve the uniformity of fly ash surface modification.
By the heating reaction of flyash and modified mixed powder, the use of organic solvent is avoided, that is, avoids flyash
Modified crushing ensure that spherical microballon is not destroyed in flyash, to improve modified coal ash to rubber product
Reinforcing property, mention be not improve rubber product stretching is slight and elongation at break.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of reaction kettle provided by the invention.
Specific embodiment
It elaborates with reference to the accompanying drawing to the present invention, to enable those of ordinary skill in the art refering to energy after this specification
It is enough to implement accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein are not precluded one or more
The presence or addition of a other elements or combinations thereof.
The present invention provides rubber product reinforcement modified coal ash, wherein the flyash and 5-20 for being 100 parts by parts by weight
The modification mixed powder of part is mixed to get.
Wherein, the modified mixed powder is made of the raw material of following parts by weight: stearic acid 10-20, Aluminate 5-10, paraffin
5-10, epoxy resin 10-20, silane coupling agent 5-10, natural rubber powder 5-10, zinc oxide 0.1-0.2, sulphur 0.05-0.1
And accelerator DM 0.08-0.12.
In the above scheme, by the hybrid reaction of flyash and modified mixed powder, so that modified mixed powder is to flyash
It is modified, fly ash surface modification is uniform, and the raw material that is made for passing through the rubber products such as natural rubber, zinc oxide, sulphur
Reaction, so that the amalgamation of modified coal ash and rubber, enhances the binding force with rubber product, increases modified coal ash and exists
Loading in rubber.
The metal oxides such as hydroxyl, di-iron trioxide, alchlor of silica surface in epoxy resin and flyash
Ionic bond react absorption, a small amount of of silane coupling agent applies while reduce costs, changes to silica in flyash
Property is more effective；The addition of the raw materials such as the constituent of rubber product forms strong work each other between flyash and rubber material
Boundary layer firmly, in conjunction with stronger, the transmitting of interface interaction power uniformly, can increase the loading in rubber product, improve machine
Tool mechanical property.
In one preferred embodiment, the mesh number of the modified mixed powder is 250-350 mesh.
In the above scheme, the mesh number of modified mixed powder can guarantee the partial size of modified mixed powder in 250-350 mesh
It is small, consequently facilitating complete with being uniformly mixed for flyash.
A kind of preparation method of rubber product reinforcement modified coal ash, mainly comprises the steps that
S1, flyash is added in reaction kettle by the top opening of reaction kettle, the filter screen in the reaction kettle is to fine coal
Ash is sieved, and the multilayer screening flyash according to granularity different distributions in the reaction kettle is obtained；
S2, it weighs to the screening flyash of each layer；
S3, by stearic acid, Aluminate, paraffin, epoxy resin, silane coupling agent, natural rubber, zinc oxide, sulphur and sulphur
Change promotor to be crushed respectively, and proportionally mixed after 250-350 mesh excessively, obtains modified mixed powder；
S4, the modification for needing to be added according to each layer of weight and Granular Computing of the screening flyash of the obtained each layer of S2 are mixed
Close the quantity of powder；
S5, each layer obtained according to S4 need the quantity for the modification mixed powder being added to be added what S3 was obtained into each layer respectively
Modified mixed powder, obtains pre- modified coal ash；
S6, each layer of the reaction kettle is heated respectively, and 30- is persistently stirred to the pre- modified coal ash of each layer
60min reacts the pre- modified coal ash sufficiently, obtains the first modified coal ash；
First modified coal ash for each layer that S7, S6 are obtained is cooled to room temperature, and to get the modified powder after mixing
Coal ash.
In the above scheme, modification flyash distinguished according to the difference of partial size, so that modified mixed powder
Dosage be adjusted according to partial size difference, save the dosage of modified mixed powder, while making flyash and modified mixed powder
Mixing and reaction it is more complete, improve the uniformity of fly ash surface modification.
By the heating reaction of flyash and modified mixed powder, the use of organic solvent is avoided, that is, avoids flyash
Modified crushing ensure that spherical microballon is not destroyed in flyash, to improve modified coal ash to rubber product
Reinforcing property, mention be not improve rubber product stretching is slight and elongation at break.
In one preferred embodiment, in S1, the mesh of the filter screen is 100-350 mesh.
In the above scheme, flyash can be layered by the mesh of filter screen between 100-350 mesh according to partial size, simultaneously
Guarantee that the amount of the flyash of each layer is relatively uniform, consequently facilitating the modification distinguished the flyash of each layer.
In one preferred embodiment, in S4, the quantity that modified mixed powder is added increases with the granularity of flyash and is increased.
In the above scheme, the additive amount of modified mixed powder is directly proportional to the partial size of flyash, because flyash silty is got over
Fine and smooth bigger with the contact area of modified mixed powder, mixing is easier to uniformly, thus dosage is less.
As shown in Figure 1, the reaction kettle specifically includes in a preferred embodiment: autoclave body 1 is hollow cylinder；It is described
The top of autoclave body 1 offers feeding port 2, and bottom is provided with collection material mouth 3；The autoclave body 1 is set as by inner shell 4 and outer shell
Bilayer autoclave body made of body 5 is mutually arranged；The inner shell 4 is connected to outer shell 5 by support spring 6.
Filter screen 6 is horizontally set on the inner layer case in such a way that the inner wall at edge and the inner shell 4 is mutually supported
Inside body 4, the filter screen 7 is set as multiple；Multiple 6 meshes of the filter screen are different, and be parallel to each other to be formed it is multiple
Sieving level；The mesh for the filter screen 7 arranged downwards by the top of the autoclave body 1 is gradually reduced；The bottom of the filter screen 7
Portion is provided with weight sensor 8；Primary heater is provided in the filter screen 7.
Rabbling mechanism comprising agitating shaft 9 and stirring blade 10；The stirring blade 10 is connect with agitating shaft 9, and in institute
It states and is rotated under the drive of agitating shaft 9, the agitating shaft 9 is extended downwardly by the top vertical of the inner shell 4, and passes through multilayer
The filter screen 7, to penetrate through the inside of the inner shell 4；The stirring blade 10 is set as multiple, multiple paddles
Piece 10 is set to the position between every adjacent two layers filter screen 7, forms multiple stirring layers；Is provided in the stirring blade 10
Two heaters.
Vibrating mechanism is connected to inner shell 4, to drive inner shell 4 to vibrate.
In the above scheme, flyash is by the feeding port investment reaction kettle at the top of autoclave body, vibrating mechanism drives inner layer case
Body vibration, enables to filter screen to carry out faster layered filtration to flyash, so that the lesser flyash of partial size falls on lower layer
Filter screen on, weight sensor weighs to the filter screen of each layer, obtains the weight of flyash on each filter screen, passes through
The weight of flyash adds the modification mixed powder of corresponding amount, the lasting stirring of stirring blade, stirring blade on each layer on each layer
The sustained vibration of heating and vibrating mechanism with filter screen so that modified mixed powder and flyash are uniformly mixed, and is heated more
It reacts modified mixed powder with flyash, and flyash is modified, wherein supporting
The setting of spring can weaken influence of the vibrating mechanism vibration to outer shell, so that reaction kettle is firm, the collection material mouth energy of bottom
Modified coal ash is enough collected, in case the subsequent alternative carbon black in rubber product is filled.
In one preferred embodiment, the agitating shaft 9 is hollow setting, offers discharge port on the stirring blade 10, institute
It states and is provided with more conveying pipelines 11 in agitating shaft 9, the first end of the more conveying pipelines 11 is stretched out by the top of the agitating shaft 9
The autoclave body 1, second end are respectively connected to each stirring blade 10.
In the above scheme, the setting by conveying pipeline in agitating shaft, so that can be by conveying pipeline by quantitative modification
Mixed powder inputs in each layer.
In one preferred embodiment, the filter screen 7 is by two semicircular branch filter sieves 12 with the edge phase of straight line
Mutually fitting is spliced to form, and the branch filter sieve 12 makes up and down or described in the autoclave body 1 when being turned down with arc-shaped side
Branch filter sieve 12 is divided into multilayer.
In the above scheme, by setting filter screen to by two branch filter screen banks at so that the modification after reaction
Flyash is fallen into below autoclave body after branch filter sieve is opened, convenient for the collection of modified coal ash.
Experimental data
Embodiment 1
A kind of rubber product reinforcement modified coal ash is 100 parts of flyash and 5 parts of modification mixed powder by parts by weight
Mixing is made of above-mentioned preparation method.
Wherein, the modified mixed powder is made of the raw material of following parts by weight: stearic acid 15, Aluminate 6, paraffin 6, epoxy
Resin 15, silane coupling agent 6, natural rubber powder 8, zinc oxide 0.1, sulphur 0.08 and accelerator DM 0.1.
Embodiment 2
A kind of rubber product reinforcement modified coal ash is mixed by parts by weight for 100 parts of flyash and 10 parts modified
Powder mixing is made of above-mentioned preparation method.
Wherein, the modified mixed powder is made of the raw material of following parts by weight: stearic acid 12, Aluminate 7, paraffin 7, epoxy
Resin 18, silane coupling agent 7, natural rubber powder 10, zinc oxide 0.08, sulphur 0.1 and accelerator DM 0.12.
Embodiment 3
A kind of rubber product reinforcement modified coal ash is mixed by parts by weight for 100 parts of flyash and 18 parts modified
Powder mixing is made of above-mentioned preparation method.
Wherein, the modified mixed powder is made of the raw material of following parts by weight: stearic acid 18, Aluminate 8, paraffin 7, epoxy
Resin 16, silane coupling agent 7, natural rubber powder 9, zinc oxide 0.15, sulphur 0.1 and accelerator DM 0.1.
Comparative example rubber product 1 is made using following formulas:
100 parts of natural rubber, 3 parts of sulphur, 1 part of accelerator DM, 5 parts of zinc oxide, 2 parts of stearic acid, 50 parts of carbon black with
And 1 part of antioxidant A.
Using 30 parts of carbon black in 30 parts of the unmodified flyash above-mentioned rubber products of replacement, comparative example rubber product is made
2。
The modified coal ash of embodiment 1-3 is taken into 30 parts of 30 parts of carbon blacks for being used to replace in above-mentioned rubber product respectively, is made
At embodiment rubber product 1-3.
The modified coal ash of embodiment 1-3 is taken into 40 parts of 40 parts of carbon blacks for being used to replace in above-mentioned rubber product respectively, is made
At embodiment rubber product 4-6.
It takes 50 parts to be used to replace the carbon black in above-mentioned rubber product completely respectively the modified coal ash of embodiment 1-3, makes
At embodiment rubber product 7-9.
The performance of above-mentioned rubber product is detected, it is as shown in table 1 below to obtain testing result:
1 rubber performance table of table
As can be seen from the above table, using modified coal ash partial replacement carbon black carry out rubber product reinforcement, performance with
The performance for being filled up completely the rubber product of carbon black is essentially identical, thus is replaced using modified coal ash of the present invention to carbon black
The rate of changing has reached 80%；And after the complete replacement for carrying out carbon black using modified coal ash of the present invention, manufactured rubber
The performance of product is influenced, and it will be subsequent goal in research that one kind, which is made, and can replace the modified coal ash of carbon black completely；Together
When, under being had substantially using the performance indexes that unmodified flyash carries out rubber product made of partial replacement to carbon black
Drop, it is seen that the improved method of flyash of the present invention is significant for the modified effect of flyash.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and the legend herein shown with description.
Claims (8)
1. a kind of rubber product reinforcement modified coal ash, wherein by parts by weight be 100 parts of flyash and 5-20 parts of modification
Mixed powder is mixed to get；
Wherein, the modified mixed powder is made of the raw material of following parts by weight: stearic acid 10-20, Aluminate 5-10, paraffin 5-
10, epoxy resin 10-20, silane coupling agent 5-10, natural rubber powder 5-10, zinc oxide 0.1-0.2, sulphur 0.05-0.1 with
And accelerator DM 0.08-0.12.
2. rubber product reinforcement modified coal ash as described in claim 1, wherein the mesh number of the modified mixed powder is
250-350 mesh.
3. a kind of preparation method of rubber product reinforcement modified coal ash as claimed in claim 1 or 2, wherein main packet
Include following steps:
S1, flyash is added in reaction kettle by the top opening of reaction kettle, filter screen in the reaction kettle to flyash into
Row screening obtains the multilayer screening flyash according to granularity different distributions in the reaction kettle；
S2, it weighs to the screening flyash of each layer；
S3, stearic acid, Aluminate, paraffin, epoxy resin, silane coupling agent, natural rubber, zinc oxide, sulphur and vulcanization are promoted
It is crushed into agent, and is proportionally mixed after 250-350 mesh excessively respectively, obtain modified mixed powder；
S4, the modification mixed powder for needing to be added according to each layer of weight and Granular Computing of the screening flyash of the obtained each layer of S2
Quantity；
S5, each layer obtained according to S4 need the quantity for the modification mixed powder being added that the modification that S3 is obtained is added into each layer respectively
Mixed powder obtains pre- modified coal ash；
S6, each layer of the reaction kettle is heated respectively, and 30-60min is persistently stirred to the pre- modified coal ash of each layer,
It reacts the pre- modified coal ash sufficiently, obtains the first modified coal ash；
First modified coal ash for each layer that S7, S6 are obtained is cooled to room temperature, and to get the modified fine coal after mixing
Ash.
4. the preparation method of rubber product reinforcement modified coal ash as claimed in claim 3, wherein in S1, the filtering
The mesh of sieve is 100-350 mesh.
5. the preparation method of rubber product reinforcement modified coal ash as claimed in claim 3, wherein in S4, be added and be modified
The quantity of mixed powder increases with the granularity of flyash and is increased.
6. the preparation method of rubber product reinforcement modified coal ash as claimed in claim 3, wherein the reaction kettle is specific
Include:
Autoclave body is hollow cylinder；Feeding port is offered at the top of the autoclave body, bottom is provided with collection material mouth；The autoclave body
It is set as bilayer autoclave body made of being mutually arranged as inner shell and outer shell；The inner shell is connected by support spring
In outer shell；
Filter screen is horizontally set in the inner shell in such a way that the inner wall at edge and the inner shell is mutually supported
Portion, the filter screen are set as multiple；Multiple filter screen meshes are different, and are parallel to each other and to form multiple screen layers excessively
Face；The mesh for the filter screen arranged downwards by the top of the autoclave body is gradually reduced；The bottom of the filter screen is provided with
Weight sensor；Primary heater is provided in the filter screen；
Rabbling mechanism comprising agitating shaft and stirring blade；The stirring blade and stirring axis connection, and in the agitating shaft
Lower rotation is driven, the agitating shaft is extended downwardly by the top vertical of the inner shell, and passes through filter screen described in multilayer, with
Penetrate through the inside of the inner shell；The stirring blade is set as multiple, and multiple stirring blades are set to per adjacent two
Position between layer filter screen, forms multiple stirring layers；Secondary heater is provided in the stirring blade；
Vibrating mechanism is connected to inner shell, to drive inner shell to vibrate.
7. the preparation method of rubber product reinforcement modified coal ash as claimed in claim 6, wherein the agitating shaft is sky
The heart is arranged, and offers discharge port on the stirring blade, more conveying pipelines, the more conveying pipelines are provided in the agitating shaft
First end the autoclave body is stretched out by the top of the agitating shaft, second end is respectively connected to each stirring blade.
8. the preparation method of rubber product reinforcement modified coal ash as claimed in claim 6, wherein the filter screen is by two
A semicircular branch filter sieve is bonded to each other with the edge of straight line to be spliced to form, and the branch filter sieve is turned over arc-shaped side
Make to be divided into multilayer up and down or by branch filter screening in the autoclave body when folding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810993354.9A CN109134932A (en) | 2018-08-29 | 2018-08-29 | Rubber product reinforcement modified coal ash and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810993354.9A CN109134932A (en) | 2018-08-29 | 2018-08-29 | Rubber product reinforcement modified coal ash and preparation method thereof |
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| CN110237707A (en) * | 2019-07-09 | 2019-09-17 | 华南理工大学 | A kind of low energy consumption device for catalyzing and oxidating ozone |
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