CN105254919A - Method for preparing environment-friendly high-strength tire reclaimed rubber through microwaves - Google Patents

Method for preparing environment-friendly high-strength tire reclaimed rubber through microwaves Download PDF

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Publication number
CN105254919A
CN105254919A CN201510759458.XA CN201510759458A CN105254919A CN 105254919 A CN105254919 A CN 105254919A CN 201510759458 A CN201510759458 A CN 201510759458A CN 105254919 A CN105254919 A CN 105254919A
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China
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rubber
step
reclaimed rubber
microwave
micro wave
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CN201510759458.XA
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Chinese (zh)
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CN105254919B (en
Inventor
王艳秋
祝木伟
张芳儒
张恒中
徐云慧
翁国文
丛后罗
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徐州工业职业技术学院
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    • 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
    • Y02W30/706Recovery of polymers other than plastics or rubbers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material

Abstract

The invention discloses a method for preparing environment-friendly high-strength tire reclaimed rubber through microwaves. The preparation method includes the following steps that rubber powder obtained after waste products are crushed, softener, compound regenerant and a coupling agent are mixed to prepare initially-modified rubber powder, wherein the tensile strength of the rubber powder is larger than or equal to 25 MPa, and the elongation at break is larger than or equal to 500%; microwave reclaimed rubber is prepared under the conditions that the radiation frequency is 2,450 MHz, the microwave radiation power ranges from 800 W to 1,200 W and the microwave radiation time is controlled to range from 1 min 40 s to 2 min 30 s, the microwave reclaimed rubber immediately enters a cooling device to be cooled and refined, and then the reclaimed rubber is obtained. Compared with a traditional waste rubber high-temperature regeneration method, by means of the method for preparing the environment-friendly high-strength tire reclaimed rubber, a molecular backbone is protected against damage, cross bonds can be broken, regeneration time is short, regeneration temperature is low, production efficiency is 5 times that of the traditional method, the performance of recycled rubber is reserved, and remarkable economic benefits and social benefits are achieved.

Description

A kind of method utilizing microwave to prepare environment-friendly, high-intensity power whole-tyre reclaim

Technical field

The present invention relates to a kind of method utilizing microwave to prepare environment-friendly, high-intensity power whole-tyre reclaim, belong to reclaimed rubber preparation field.

Background technology

The quantity of waste old material is only second to plastic waste in spent high molecular material, and wherein learies is more than 1,000,000,000 doughnut whole world year, and China is at 5000 ~ 60,000,000.The recycling of waste old is based on junked tire, and other also comprises waste rubber shoe and the inner tube of a tyre etc., and the utilization of waste rubber is conducive to protection of the environment, realizes the recycling of resource, is conducive to socioeconomic Sustainable development.

Conventional regeneration glue needs to carry out in regenerating tank at present in regenerative process, needs the operations such as heated and stirred, cleaning, dehydration, refining, equipment and operation more complicated, investment is large.In regenerative process, add relatively large tenderizer coal tar, Stockholm tar, oil extractum etc., reclaimed rubber is made to have very niff, larger contaminative, also containing a lot of poisonous chemical substances making people carcinogenic, the developed country such as Europe has limited the outlet of the rubber items such as tire containing these chemical substances at present.Conventional regeneration glue current reclaiming process time is many at about 4h, and vapor pressure is at 1MP aleft and right, the time is long, and efficiency is low.The tensile strength of conventional regeneration glue is lower, generally at 5 ~ 8MPa.

Summary of the invention

In order to overcome the deficiency of above-mentioned conventional art, the invention provides a kind of method utilizing microwave novel process to prepare environment-friendly, high-intensity power whole-tyre reclaim, each raw material and mass fraction thereof are:

Waste rubber powder 100.00

Tenderizer 5.00 ~ 10.00

Multiplicity reactivation regenerator 420/M0.40 ~ 0.70

Coupling agent KH5701.00 ~ 2.50

Described multiplicity reactivation regenerator 420/M by activating and regenerating agent 420(chemical name is: polyalkylbenzene phenol disulphide) and activating and regenerating agent M(chemical name be: 2-thiol benzothiazole) form, be regenerator 420 by quality proportioning: regenerator M=1:1 is formulated.

Its preparation method, carries out as follows:

Step 1) is screened: adopt tensile strength >=25MPa, the waste and old truck tyre of tensile yield >=500% and/or engineering tyre, through pulverizing preparation 10 ~ 30 object waste rubber powder.

Step 2) waste rubber powder is placed on a mill until, add tenderizer successively, composite regenerant 420/M, coupling agent KH570, carries out the mixing 10min of thin-pass, and the temperature of mill controls at 40 ± 5 DEG C, roll spacing controls at 0.8 ± 0.2mm, mixing rear bottom sheet, the sizing material gauge control of bottom sheet, at 0.8-1.2mm, obtains preliminary modified glue powder.

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

Micro wave regeneration glue is entered refrigerating unit by step 4) at once, and cool, cooled micro wave regeneration glue, temperature controls below 40 DEG C.

Cooled micro wave regeneration glue is carried out refining by step 5), and the film face after refining is bright and clean, homogeneous, both obtains reclaimed rubber.

Step 6) Performance Detection.Being joined by various Synergist S-421 95 successively according to GB " regenerated rubber " GB/T13460-2008 reclaimed rubber test formulations carries out mixing in reclaimed rubber, then by rubber unvulcanizate sulfuration, after parking 24h, sizing material is carried out to the test of physical and mechanical properties and process industrial art performance.

Described tenderizer is naphthenic oil, Stockholm tar.

The performance test results shows, the tensile strength of environment-friendly, high-intensity power whole-tyre reclaim can reach more than 23.5MPa, and elongation at break reaches more than 450%, Wei Shi plasticity number 0.35 ~ 0.45.Show that the regeneration of product of the present invention to waste old rubber powder achieves good effect.

the invention has the beneficial effects as follows: the microwave radiation that the present invention adopts prepares the method for reclaimed rubber, and both protected molecular backbone chain and be not destroyed, composite regenerated activator all can make cross-link bond chain rupture under high temperature and low temperature, has good action effect to polar link and unsaturated double-bond.Compared with conventional regeneration glue, microwave radiation reclaimed rubber remains the technology and machinery performance of reclaimed rubber, with environmental friendliness, conserve energy, drastically increases production efficiency, and production efficiency is 5 times of traditional method.There is outstanding economic benefit and social benefit.

Embodiment

Below in conjunction with embodiment, the invention will be further described.

embodiment 1

Each raw material and mass fraction thereof are:

Waste rubber powder 100.00

Tenderizer naphthenic oil 10.00

Multiplicity reactivation regenerator 420/M0.70

Coupling agent KH5702.00

Described multiplicity reactivation regenerator 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, is regenerator 420: regenerator M=1:1 is formulated by quality proportioning.

Its preparation method, carries out as follows:

Step 1) is screened: adopt tensile strength >=25MPa, the waste and old truck tyre of tensile yield >=500% and/or engineering tyre, the waste rubber powder about pulverizing preparation 20 order;

Step 2) waste rubber powder is placed on a mill until, add tenderizer naphthenic oil successively, composite regenerant 420/M, coupling agent KH570, carries out the mixing 10min of thin-pass, and the temperature of mill controls at 40 ± 5 DEG C, roll spacing controls at 0.8 ± 0.2mm, mixing rear bottom sheet, the sizing material gauge control of bottom sheet, at about 1.0mm, obtains preliminary modified glue powder;

Step 3) by preliminary modified adhesive at about 50 DEG C, evenly render on roller conveyor with 2cm thickness, roller-way has been installed high frequency microwave radiation devices, the speed that roller-way is carried forward is 4.5m/min, microwave radiation roller-way length 7.5m, roller-way is carried forward, carries out microwave radiation regeneration in the process of conveying, radiation frequency is 2450MHz, microwave irradiation power is 1200W, microwave irradiation time controls at 2min30s, after micro wave regeneration, and obtained micro wave regeneration glue;

Micro wave regeneration glue is entered refrigerating unit by step 4) at once, and cool, cooled micro wave regeneration glue, temperature controls below 40 DEG C;

Cooled micro wave regeneration glue is carried out refining by step 5), refining 20min, and refining temperature controls at 45 DEG C, and the film face after refining is bright and clean, homogeneous, both obtains reclaimed rubber;

Step 6) Performance Detection.According to GB " regenerated rubber " GB/T13460-2008 reclaimed rubber test formulations successively various Synergist S-421 95 is joined carry out in reclaimed rubber mixing, then by rubber unvulcanizate sulfuration, after parking 24h, to above-mentioned reclaimed rubber, carry out the test of physical and mechanical properties and process industrial art performance.

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

embodiment 2

Each raw material and mass fraction thereof are:

Waste rubber powder 100.00

Tenderizer Stockholm tar 8.00

Multiplicity reactivation regenerator 420/M0.50

Coupling agent KH5702.50

Described multiplicity reactivation regenerator 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, is regenerator 420: regenerator M=1:1 is formulated by quality proportioning.

Its preparation method, carries out as follows:

Step 1) is screened: adopt tensile strength >=25MPa, the waste and old truck tyre of tensile yield >=500% and/or engineering tyre, the waste rubber powder about pulverizing preparation 30 order;

Step 2) waste rubber powder is placed on a mill until, add tenderizer Stockholm tar successively, composite regenerant 420/M, coupling agent KH570, carries out the mixing 10min of thin-pass, and the temperature of mill controls at 40 ± 5 DEG C, roll spacing controls at 0.8 ± 0.2mm, mixing rear bottom sheet, the sizing material gauge control of bottom sheet, at about 1.0mm, obtains preliminary modified glue powder;

Step 3) by preliminary modified adhesive at about 55 DEG C, evenly render on roller conveyor with 2cm thickness, roller-way has been installed high frequency microwave radiation devices, the speed that roller-way is carried forward is 4.5m/min, microwave radiation roller-way length 7.5m, roller-way is carried forward, carries out microwave radiation regeneration in the process of conveying, radiation frequency is 2450MHz, microwave irradiation power is 1200W, microwave irradiation time controls at 2min, after micro wave regeneration, and obtained micro wave regeneration glue;

Micro wave regeneration glue is entered refrigerating unit by step 4) at once, and cool, cooled micro wave regeneration glue, temperature controls below 40 DEG C;

Cooled micro wave regeneration glue is carried out refining by step 5), refining 15min, and refining temperature controls at 40 DEG C, and the film face after refining is bright and clean, homogeneous, both obtains reclaimed rubber;

Step 6) Performance Detection.According to GB " regenerated rubber " GB/T13460-2008 reclaimed rubber test formulations successively various Synergist S-421 95 is joined carry out in reclaimed rubber mixing, then by rubber unvulcanizate sulfuration, after parking 24h, to above-mentioned reclaimed rubber, carry out the test of physical and mechanical properties and process industrial art performance.

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

embodiment 3

Each raw material and mass fraction thereof are:

Waste rubber powder 100.00

Tenderizer Stockholm tar 10.00

Multiplicity reactivation regenerator 420/M0.60

Coupling agent KH5701.50

Described multiplicity reactivation regenerator 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, is regenerator 510: regenerator M=1:1 is formulated by quality proportioning.

Its preparation method, carries out as follows:

Step 1) is screened: adopt tensile strength >=25MPa, the waste and old truck tyre of tensile yield >=500% and/or engineering tyre, the waste rubber powder about pulverizing preparation 30 order;

Step 2) waste rubber powder is placed on a mill until, add tenderizer Stockholm tar successively, composite regenerant 420/M, coupling agent KH570, carries out the mixing 10min of thin-pass, and the temperature of mill controls at 40 ± 5 DEG C, roll spacing controls at 0.8 ± 0.2mm, mixing rear bottom sheet, the sizing material gauge control of bottom sheet, at about 1.0mm, obtains preliminary modified glue powder;

Step 3) by preliminary modified adhesive at about 60 DEG C, evenly render on roller conveyor with 2cm thickness, roller-way has been installed high frequency microwave radiation devices, the speed that roller-way is carried forward is 4.5m/min, microwave radiation roller-way length 7.5m, roller-way is carried forward, carries out microwave radiation regeneration in the process of conveying, radiation frequency is 2450MHz, microwave irradiation power is 800W, microwave irradiation time controls at 2min, after micro wave regeneration, and obtained micro wave regeneration glue;

Micro wave regeneration glue is entered refrigerating unit by step 4) at once, and cool, cooled micro wave regeneration glue, temperature controls below 40 DEG C;

Cooled micro wave regeneration glue is carried out refining by step 5), refining 15min, and refining temperature controls at 40 DEG C, and the film face after refining is bright and clean, homogeneous, both obtains reclaimed rubber;

Step 6) Performance Detection.According to GB " regenerated rubber " GB/T13460-2008 reclaimed rubber test formulations successively various Synergist S-421 95 is joined carry out in reclaimed rubber mixing, then by rubber unvulcanizate sulfuration, after parking 24h, to above-mentioned reclaimed rubber, carry out the test of physical and mechanical properties and process industrial art performance.

The performance test results shows, reclaimed rubber prepared by this embodiment, and tensile strength can reach 24.6MPa, and elongation at break is that 460%, Wei Shi plasticity number is 0.35.Show that the regeneration of product to waste old rubber powder that the present invention obtains achieves good effect.

embodiment 4

Each raw material and mass fraction thereof are:

Waste rubber powder 100.00

Tenderizer naphthenic oil 5.00

Multiplicity reactivation regenerator 420/M0.70

Coupling agent KH5701.00

Described multiplicity reactivation regenerator 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, is regenerator 420: regenerator M=1:1 is formulated by quality proportioning.

Its preparation method, carries out as follows:

Step 1) is screened: adopt tensile strength >=25MPa, the waste and old truck tyre of tensile yield >=500% and/or engineering tyre, the waste rubber powder about pulverizing preparation 20 order;

Step 2) waste rubber powder is placed on a mill until, add tenderizer naphthenic oil successively, composite regenerant 420/M, coupling agent KH570, carries out the mixing 10min of thin-pass, and the temperature of mill controls at 40 ± 5 DEG C, roll spacing controls at 0.8 ± 0.2mm, mixing rear bottom sheet, the sizing material gauge control of bottom sheet, at about 1.0mm, obtains preliminary modified glue powder;

Step 3) by preliminary modified adhesive at about 40 DEG C, evenly render on roller conveyor with 2cm thickness, roller-way has been installed high frequency microwave radiation devices, the speed that roller-way is carried forward is 4.5m/min, microwave radiation roller-way length 7.5m, roller-way is carried forward, carries out microwave radiation regeneration in the process of conveying, radiation frequency is 2450MHz, microwave irradiation power is 1000W, microwave irradiation time controls at 2min30s, after micro wave regeneration, and obtained micro wave regeneration glue;

Micro wave regeneration glue is entered refrigerating unit by step 4) at once, and cool, cooled micro wave regeneration glue, temperature controls below 40 DEG C;

Cooled micro wave regeneration glue is carried out refining by step 5), refining 20min, and refining temperature controls at 45 DEG C, and the film face after refining is bright and clean, homogeneous, both obtains reclaimed rubber;

Step 6) Performance Detection.According to GB " regenerated rubber " GB/T13460-2008 reclaimed rubber test formulations successively various Synergist S-421 95 is joined carry out in reclaimed rubber mixing, then by rubber unvulcanizate sulfuration, after parking 24h, to above-mentioned reclaimed rubber, carry out the test of physical and mechanical properties and process industrial art performance.

The performance test results shows, reclaimed rubber prepared by this embodiment, and tensile strength can reach 25.6MPa, and elongation at break is that 450%, Wei Shi plasticity number is 0.37.Show that the regeneration of product to waste old rubber powder that the present invention obtains achieves good effect.

Claims (2)

1. utilize microwave to prepare a method for environment-friendly, high-intensity power whole-tyre reclaim, it is characterized in that: each raw material and mass fraction thereof are:
Waste rubber powder 100.00
Tenderizer 5.00 ~ 10.00
Multiplicity reactivation regenerator 420/M0.40 ~ 0.70
Coupling agent KH5701.00 ~ 2.50
Described multiplicity reactivation regenerator 420/M is made up of activating and regenerating agent 420 and activating and regenerating agent M, is regenerator 420: regenerator M=1:1 is formulated by quality proportioning;
Its preparation method, carries out as follows:
Step 1) is screened: adopt tensile strength >=25MPa, the waste and old truck tyre of tensile yield >=500% and/or engineering tyre, through pulverizing preparation 10 ~ 30 object waste rubber powder;
Step 2) waste rubber powder is placed on a mill until, add tenderizer successively, composite regenerant 420/M, coupling agent KH570, carries out the mixing 10min of thin-pass, and the temperature of mill controls at 40 ± 5 DEG C, roll spacing controls at 0.8 ± 0.2mm, mixing rear bottom sheet, the sizing material gauge control of bottom sheet, at 0.8-1.2mm, obtains preliminary modified glue powder;
Preliminary modified adhesive at 40 ~ 60 DEG C, is carried out microwave radiation by step 3), and radiation frequency is 2450MHz, and microwave irradiation power is 800 ~ 1200W, and microwave irradiation time controls at 1min40s ~ 2min30s, after micro wave regeneration, and obtained micro wave regeneration glue;
Micro wave regeneration glue is entered refrigerating unit by step 4) at once, and cool, cooled micro wave regeneration glue, temperature controls below 40 DEG C;
Cooled micro wave regeneration glue is carried out refining by step 5), and the film face after refining is bright and clean, homogeneous, both obtains reclaimed rubber;
Step 6) Performance Detection.
2., according to a kind of method utilizing microwave to prepare environment-friendly, high-intensity power whole-tyre reclaim described in claim 1, it is characterized in that: described tenderizer is naphthenic oil, Stockholm tar.
CN201510759458.XA 2015-11-10 2015-11-10 A kind of method that environment-friendly, high-intensity power tyre reclaim is prepared using microwave CN105254919B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106146878A (en) * 2016-07-13 2016-11-23 四川省隆昌海燕橡胶有限公司 A kind of microwave technology produces the method for reclaimed rubber
CN107033421A (en) * 2016-11-23 2017-08-11 江西广安再生资源有限公司 Recovered rubber plastic particle
CN108373557A (en) * 2017-12-29 2018-08-07 天台坤荣橡胶有限公司 A kind of preparation method of high-performance reclaimed rubber

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* 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
CN101831184A (en) * 2010-03-23 2010-09-15 江汉大学 Pitch modified from waste tire rubber powder and preparation method thereof
CN102634056A (en) * 2012-04-01 2012-08-15 徐州工业职业技术学院 Microwave radiation reclaiming method for environment-friendly high-strength reclaimed rubber
CN102634062A (en) * 2012-04-28 2012-08-15 徐州工业职业技术学院 Method for preparing high-tenacity reclaimed rubber by adding coupling agent

Patent Citations (4)

* 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
CN101831184A (en) * 2010-03-23 2010-09-15 江汉大学 Pitch modified from waste tire rubber powder and preparation method thereof
CN102634056A (en) * 2012-04-01 2012-08-15 徐州工业职业技术学院 Microwave radiation reclaiming method for environment-friendly high-strength reclaimed rubber
CN102634062A (en) * 2012-04-28 2012-08-15 徐州工业职业技术学院 Method for preparing high-tenacity reclaimed rubber by adding coupling agent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106146878A (en) * 2016-07-13 2016-11-23 四川省隆昌海燕橡胶有限公司 A kind of microwave technology produces the method for reclaimed rubber
CN107033421A (en) * 2016-11-23 2017-08-11 江西广安再生资源有限公司 Recovered rubber plastic particle
CN108373557A (en) * 2017-12-29 2018-08-07 天台坤荣橡胶有限公司 A kind of preparation method of high-performance reclaimed rubber
CN108373557B (en) * 2017-12-29 2020-08-11 天台坤荣橡胶有限公司 Preparation method of high-performance regenerated rubber

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