CN106146878A - A kind of microwave technology produces the method for reclaimed rubber - Google Patents

A kind of microwave technology produces the method for reclaimed rubber Download PDF

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Publication number
CN106146878A
CN106146878A CN201610548842.XA CN201610548842A CN106146878A CN 106146878 A CN106146878 A CN 106146878A CN 201610548842 A CN201610548842 A CN 201610548842A CN 106146878 A CN106146878 A CN 106146878A
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CN
China
Prior art keywords
step
agent
microwave
rubber powder
glue
Prior art date
Application number
CN201610548842.XA
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Chinese (zh)
Inventor
薛长能
Original Assignee
四川省隆昌海燕橡胶有限公司
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Priority to CN201610548842.XA priority Critical patent/CN106146878A/en
Publication of CN106146878A publication Critical patent/CN106146878A/en

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J11/00Recovery or working-up of waste materials
    • C08J11/04Recovery or working-up of waste materials of polymers
    • C08J11/10Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J2317/00Characterised by the use of reclaimed rubber
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/70Recovery of polymers other than plastics or rubbers
    • Y02W30/702Recovery of polymers other than plastics or rubbers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation

Abstract

The invention discloses a kind of microwave technology and produce the method for reclaimed rubber, its preparation method is as follows, use tensile strength >=25MPa, elongation at break >=500% waste product crushes the rubber powder of gained, with softening agent, composite regenerant, coupling agent, carrying out mixing and preparing preliminary modified glue powder, be 2450 MHz at radiation frequency, microwave irradiation power is 800~1200W, microwave irradiation time controls at 1min 40s~2min 30s, prepare micro wave regeneration glue and simultaneously immediately enter cooling device, after cooling down and refine, both reclaimed rubber.

Description

A kind of microwave technology produces the method for reclaimed rubber

Technical field

The invention belongs to reclaimed rubber preparation field, be specifically related to a kind of microwave technology and produce the method for reclaimed rubber.

Background technology

The quantity of waste old material is only second to waste plastics, wherein automobile tire whole world year in spent high molecular material Learies is more than 1,000,000,000, and China is at 5000~60,000,000.Based on the recycling of waste old is with junked tire, other Also including waste rubber shoe and the inner tube of a tyre etc., the utilization of scrap rubber is conducive to protecting environment, it is achieved the recycling of resource, is conducive to society Economic sustainable development, conventional regeneration glue needs to carry out in regenerating tank at present in regenerative process, needs heating to stir, clearly Wash, be dehydrated, the operation such as refining, equipment and operation are more complicated, and investment is big.In regenerative process, add larger amount of softening agent Coal tar, pine tar, oil extract etc., make reclaimed rubber have very niff, and bigger contaminative, possibly together with a lot The poisonous chemical substance making people carcinogenic, the developed countries such as Europe have limited the rubber such as the tire containing these chemical substances at present The outlet of goods.The conventional regeneration glue current regeneration technology time is many at about 4h, and steam pressure is at about 1MPa, and the time is long, Efficiency is low.The tensile strength of conventional regeneration glue is relatively low, typically at 5~8MPa.

Content of the invention

Present invention aims to the deficiencies in the prior art, provide a kind of microwave technology to produce the method for reclaimed rubber, The method that this microwave technology produces reclaimed rubber can solve the problems referred to above well.

For reaching above-mentioned requirements, the invention provides one and utilize microwave new technology to prepare environment-friendly, high-intensity power tyre reclaim Method, each raw material and mass fraction thereof be: waste rubber powder the 100.00th, softening agent 5.00~10.00, multiplicity reactivation regeneration Agent 420/M0.40~0.70, coupling agent KH5701.00~2.50;

Described multiplicity reactivation regenerative agent 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, in mass ratio Regenerative agent 420: regenerative agent M=1:1 is formulated;

Its preparation method, is carried out as follows:

Step 1) is screened: use tensile strength >=25MPa, the waste and old high-capacity tyre of elongation at break >=500% and/or engineering wheel Tire, the waste rubber powder of size-reduced preparation 10~30 mesh;

Step 2) waste rubber powder is placed on a mill until, it is sequentially added into softening agent, composite regenerant 420/M, coupling agent KH570, carries out thin logical mixing 10min, and the temperature of mill controls at 40 ± 5 DEG C, and roll spacing controls after 0.8 ± 0.2mm, mixing Bottom sheet, the sizing material THICKNESS CONTROL of bottom sheet, at 0.8-1.2mm, prepares preliminary modified glue powder;

Preliminary modified adhesive at 40~60 DEG C, is carried out microwave by step 3), and radiation frequency is 2450MHz, microwave irradiation power Being 800~1200W, microwave irradiation time controls after 1min40s~2min30s, micro wave regeneration, prepares micro wave regeneration glue;

Micro wave regeneration glue is immediately entered cooling device by step 4), cools down, and the micro wave regeneration glue after cooling, temperature controls Less than 40 DEG C;

Micro wave regeneration glue after step 5) will cool down refines, and the film face after refining is bright and clean, homogeneous, both must regenerate Glue;

Waste old material is pulverized to obtain waste rubber powder, crosses 5~200 mesh sieves;

Step 7) is by waste rubber powder electromagnetic method scrap iron removing and impurity;

Step 8) by after scrap iron removing and impurity waste rubber powder load microwave desulfurization tank, add RX, in mass ratio, Waste rubber powder: RX=100: 0~15;

Step 9) heating using microwave desulfurization, heating-up temperature 140~300 DEG C;

The refining shaping of step 10) refined machine, extrusion are filtrated to get the bar template film of certain specification;

Step 11) bar template film is broken into required block reclaimed rubber through automatic cutting again, finally carries through one through ribbon conveyer Packaging warehouse-in after the laminating of secondary EVA film.

The performance test results shows, the tensile strength of environment-friendly, high-intensity power tyre reclaim is stretched up to more than 23.5MPa, fracture Long rate reaches more than 450%, and Wei Shi plasticity is 0.35~0.45.Show that the regeneration of waste old rubber powder is taken by product of the present invention Obtained good effect.

The method that this microwave technology produces reclaimed rubber has the advantage that as follows: the microwave preparation regeneration that the present invention uses The method of glue, had both protected molecular backbone and be not destroyed, and composite regenerated activator all can make cross-bond break under high temperature and low temperature Chain, has good action effect to polar bond and unsaturated double-bond.Compared with conventional regeneration glue, microwave reclaimed rubber retains The technique of reclaimed rubber and mechanical performance, with environmental friendliness, save energy, drastically increase production efficiency, and production efficiency is 5 times of conventional method.There is prominent economic benefit and social benefit.

Detailed description of the invention

Purpose, technical scheme and advantage for making the application are clearer, and the application is made into one by specific examples below Step ground describes in detail.

In the following description, quoting of " embodiment ", " embodiment ", " example ", " example " etc. is shown The embodiment so describing or example can include special characteristic, structure, characteristic, character, element or limit, but not each is real Execute example or example all necessarily includes special characteristic, structure, characteristic, character, element or limit.In addition, reuse phrase " according to One embodiment of the application " is although it is possible to refer to identical embodiment, but is not necessarily referring to identical embodiment.

This microwave technology produces each raw material of the method for reclaimed rubber and mass fraction is: waste rubber powder is the 100.00th, soft Agent 5.00~10.00, multiplicity reactivation regenerative agent 420/M0.40~0.70, coupling agent KH5701.00~2.50;

Described multiplicity reactivation regenerative agent 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, in mass ratio Regenerative agent 420: regenerative agent M=1:1 is formulated;

Its preparation method, is carried out as follows:

Step 1) is screened: use tensile strength >=25MPa, the waste and old high-capacity tyre of elongation at break >=500% and/or engineering wheel Tire, the waste rubber powder of size-reduced preparation 10~30 mesh;

Step 2) waste rubber powder is placed on a mill until, it is sequentially added into softening agent, composite regenerant 420/M, coupling agent KH570, carries out thin logical mixing 10min, and the temperature of mill controls at 40 ± 5 DEG C, and roll spacing controls after 0.8 ± 0.2mm, mixing Bottom sheet, the sizing material THICKNESS CONTROL of bottom sheet, at 0.8-1.2mm, prepares preliminary modified glue powder;

Preliminary modified adhesive at 40~60 DEG C, is carried out microwave by step 3), and radiation frequency is 2450MHz, microwave irradiation power Being 800~1200W, microwave irradiation time controls after 1min40s~2min30s, micro wave regeneration, prepares micro wave regeneration glue;

Micro wave regeneration glue is immediately entered cooling device by step 4), cools down, and the micro wave regeneration glue after cooling, temperature controls Less than 40 DEG C;

Micro wave regeneration glue after step 5) will cool down refines, and the film face after refining is bright and clean, homogeneous, both must regenerate Glue;

Waste rubber powder pulverized to obtain by waste old material by step 6), crosses 5~200 mesh sieves;

Step 7) is by waste rubber powder electromagnetic method scrap iron removing and impurity;

Step 8) by after scrap iron removing and impurity waste rubber powder load microwave desulfurization tank, add RX, in mass ratio, Waste rubber powder: RX=100: 0~15;

Step 9) heating using microwave desulfurization, heating-up temperature 140~300 DEG C;

The refining shaping of step 10) refined machine, extrusion are filtrated to get the bar template film of certain specification;

Step 11) bar template film is broken into required block reclaimed rubber through automatic cutting again, finally carries through one through ribbon conveyer Packaging warehouse-in after the laminating of secondary EVA film.

Embodiment 1

Each raw material and mass fraction thereof be:

Waste rubber powder 100.00

Softening agent naphthenic oil 10.00

Multiplicity reactivation regenerative agent 420/M0.70

Coupling agent KH5702.00

Described multiplicity reactivation regenerative agent 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, in mass ratio Regenerative agent 420: regenerative agent M=1:1 is formulated.

Its preparation method, is carried out as follows:

Step 1) is screened: use tensile strength >=25MPa, the waste and old high-capacity tyre of elongation at break >=500% and/or engineering wheel Tire, the waste rubber powder about size-reduced preparation 20 mesh;

Step 2) waste rubber powder is placed on a mill until, it is sequentially added into softening agent naphthenic oil, composite regenerant 420/M, idol Connection agent KH570, carries out thin logical mixing 10min, and the temperature of mill controls at 40 ± 5 DEG C, and roll spacing controls at 0.8 ± 0.2mm, mixed Bottom sheet after refining, the sizing material THICKNESS CONTROL of bottom sheet, at about 1.0mm, prepares preliminary modified glue powder;

Preliminary modified adhesive at about 50 DEG C, is uniformly rendered on roller conveyor by step 3) with 2cm thickness, and roller-way is installed High-frequency microwave radiation appliance, the speed that roller-way carries forward is 4.5m/min, microwave roller-way length 7.5m, on roller-way Being carried forward, carrying out microwave regeneration during conveying, radiation frequency is 2450MHz, and microwave irradiation power is 1200W, microwave irradiation time controls after 2min30s, micro wave regeneration, prepares micro wave regeneration glue;

Micro wave regeneration glue is immediately entered cooling device by step 4), cools down, and the micro wave regeneration glue after cooling, temperature controls Less than 40 DEG C;

Micro wave regeneration glue after step 5) will cool down refines, and refines 20min, and refining temperature controls at 45 DEG C, after refining Film face is bright and clean, homogeneous, has both obtained reclaimed rubber;

Step 6) performance detects.Join various successively according to GB " reclaimed rubber " GB/T13460-2008 reclaimed rubber test formulations Mixture joins in reclaimed rubber and kneads, and then vulcanizes elastomeric compound, after parking 24h, to above-mentioned reclaimed rubber, carries out physical machine Tool performance and the test of process industrial art performance.

The performance test results shows, reclaimed rubber prepared by this embodiment, and tensile strength is up to 23.7MPa, elongation at break Being 480%, Wei Shi plasticity is 0.44.Show that the regeneration to waste old rubber powder of product that the present invention obtains achieves good Effect.

Embodiment 2

Each raw material and mass fraction thereof be:

Waste rubber powder 100.00

Softening agent pine tar 8.00

Multiplicity reactivation regenerative agent 420/M0.50

Coupling agent KH5702.50

Described multiplicity reactivation regenerative agent 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, in mass ratio Regenerative agent 420: regenerative agent M=1:1 is formulated.

Its preparation method, is carried out as follows:

Step 1) is screened: use tensile strength >=25MPa, the waste and old high-capacity tyre of elongation at break >=500% and/or engineering wheel Tire, the waste rubber powder about size-reduced preparation 30 mesh;

Step 2) waste rubber powder is placed on a mill until, it is sequentially added into softening agent pine tar, composite regenerant 420/M, coupling Agent KH570, carries out thin logical mixing 10min, and the temperature of mill controls at 40 ± 5 DEG C, and roll spacing controls at 0.8 ± 0.2mm, mixing Rear bottom sheet, the sizing material THICKNESS CONTROL of bottom sheet, at about 1.0mm, prepares preliminary modified glue powder;

Preliminary modified adhesive at about 55 DEG C, is uniformly rendered on roller conveyor by step 3) with 2cm thickness, and roller-way is installed High-frequency microwave radiation appliance, the speed that roller-way carries forward is 4.5m/min, microwave roller-way length 7.5m, on roller-way Being carried forward, carrying out microwave regeneration during conveying, radiation frequency is 2450MHz, and microwave irradiation power is 1200W, microwave irradiation time controls after 2min, micro wave regeneration, prepares micro wave regeneration glue;

Micro wave regeneration glue is immediately entered cooling device by step 4), cools down, and the micro wave regeneration glue after cooling, temperature controls Less than 40 DEG C;

Micro wave regeneration glue after step 5) will cool down refines, and refines 15min, and refining temperature controls at 40 DEG C, after refining Film face is bright and clean, homogeneous, has both obtained reclaimed rubber;

Step 6) performance detects.Join various successively according to GB " reclaimed rubber " GB/T13460-2008 reclaimed rubber test formulations Mixture joins in reclaimed rubber and kneads, and then vulcanizes elastomeric compound, after parking 24h, to above-mentioned reclaimed rubber, carries out physical machine Tool performance and the test of process industrial art performance.

The performance test results shows, reclaimed rubber prepared by this embodiment, and tensile strength is up to 24.2MPa, elongation at break Being 465%, Wei Shi plasticity is 0.42.Show that the regeneration to waste old rubber powder of product that the present invention obtains achieves good Effect.

Embodiment described above only represents the several embodiments of the present invention, and it describes more concrete and detailed, but not It is understood that as limitation of the scope of the invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from On the premise of present inventive concept, can also make some deformation and improve, these broadly fall into scope.Therefore this Bright protection domain should be as the criterion with described claim.

Claims (1)

1. a microwave technology produces the method for reclaimed rubber, it is characterised in that: each raw material and mass fraction thereof be: waste rubber powder 100.00th, softening agent 5.00~10.00, multiplicity reactivation regenerative agent 420/M0.40~0.70, coupling agent KH5701.00~ 2.50 ;
Described multiplicity reactivation regenerative agent 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, in mass ratio Regenerative agent 420: regenerative agent M=1:1 is formulated;
Its preparation method, is carried out as follows:
Step 1) is screened: use tensile strength >=25MPa, the waste and old high-capacity tyre of elongation at break >=500% and/or engineering wheel Tire, the waste rubber powder of size-reduced preparation 10~30 mesh;
Step 2) waste rubber powder is placed on a mill until, it is sequentially added into softening agent, composite regenerant 420/M, coupling agent KH570, carries out thin logical mixing 10min, and the temperature of mill controls at 40 ± 5 DEG C, and roll spacing controls after 0.8 ± 0.2mm, mixing Bottom sheet, the sizing material THICKNESS CONTROL of bottom sheet, at 0.8-1.2mm, prepares preliminary modified glue powder;
Preliminary modified adhesive at 40~60 DEG C, is carried out microwave by step 3), and radiation frequency is 2450MHz, microwave irradiation power Being 800~1200W, microwave irradiation time controls after 1min40s~2min30s, micro wave regeneration, prepares micro wave regeneration glue;
Micro wave regeneration glue is immediately entered cooling device by step 4), cools down, and the micro wave regeneration glue after cooling, temperature controls Less than 40 DEG C;
Micro wave regeneration glue after step 5) will cool down refines, and the film face after refining is bright and clean, homogeneous, both must regenerate Glue;
Waste rubber powder pulverized to obtain by waste old material by step 6), crosses 5~200 mesh sieves;
Step 7) is by waste rubber powder electromagnetic method scrap iron removing and impurity;
Step 8) by after scrap iron removing and impurity waste rubber powder load microwave desulfurization tank, add RX, in mass ratio, Waste rubber powder: RX=100: 0~15;
Step 9) heating using microwave desulfurization, heating-up temperature 140~300 DEG C;
The refining shaping of step 10) refined machine, extrusion are filtrated to get the bar template film of certain specification;
Step 11) bar template film is broken into required block reclaimed rubber through automatic cutting again, finally carries through one through ribbon conveyer Packaging warehouse-in after the laminating of secondary EVA film.
CN201610548842.XA 2016-07-13 2016-07-13 A kind of microwave technology produces the method for reclaimed rubber CN106146878A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108484970A (en) * 2018-04-20 2018-09-04 刘凡领 A kind of preparation method of the ageing-resistant reclaimed rubber of stretch-proof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101045799A (en) * 2007-04-17 2007-10-03 福建省晋江市陈埭江头茂泰橡塑厂 Preparation method of reclaimed rubber using microwave desulfurization method
CN105254919A (en) * 2015-11-10 2016-01-20 徐州工业职业技术学院 Method for preparing environment-friendly high-strength tire reclaimed rubber through microwaves

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101045799A (en) * 2007-04-17 2007-10-03 福建省晋江市陈埭江头茂泰橡塑厂 Preparation method of reclaimed rubber using microwave desulfurization method
CN105254919A (en) * 2015-11-10 2016-01-20 徐州工业职业技术学院 Method for preparing environment-friendly high-strength tire reclaimed rubber through microwaves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108484970A (en) * 2018-04-20 2018-09-04 刘凡领 A kind of preparation method of the ageing-resistant reclaimed rubber of stretch-proof

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Application publication date: 20161123